CA1291000C - Leakproof hemostasis valve with single valve member - Google Patents
Leakproof hemostasis valve with single valve memberInfo
- Publication number
- CA1291000C CA1291000C CA000551374A CA551374A CA1291000C CA 1291000 C CA1291000 C CA 1291000C CA 000551374 A CA000551374 A CA 000551374A CA 551374 A CA551374 A CA 551374A CA 1291000 C CA1291000 C CA 1291000C
- Authority
- CA
- Canada
- Prior art keywords
- gasket
- bore
- pressure
- tubular
- resilient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
- A61M39/0613—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof with means for adjusting the seal opening or pressure
Abstract
LEAKPROOF HEMOSTASIS VALVE WITH SINGLE VALVE MEMBER
ABSTRACT OF THE DISCLOSURE
A hemostasis valve in which the valve member is a tubular, resilient gasket which may be compressed with variable pressure to provide a variable pressure seal to an elongated member extending through the tubular bore of the gasket. The gasket gore also defines at least one resilient, annular rib whereby the elongated member passing through the tubular gasket bore may be subjected at all times to at least a relatively low pressure seal from the resilient, annular rib, irrespective of the pressure of the variable pressure seal. Additionally, the pressure on the gasket may be applied and released by means of a pressure member positioned against the gasket. Means are provided permitting longitudinal motion, but preventing rotational motion, of the pressure member. A rotatable cap is provided, with facing, mating spiral track means carried on both the inner face of the rotatable cap and outer face of the pressure member, to cause pressurizing advancement of the pressure member against the tubular gasket by rotation of the cap in one direction, and release of such pressurizing advancement by rotation of the cap in the other direction.
ABSTRACT OF THE DISCLOSURE
A hemostasis valve in which the valve member is a tubular, resilient gasket which may be compressed with variable pressure to provide a variable pressure seal to an elongated member extending through the tubular bore of the gasket. The gasket gore also defines at least one resilient, annular rib whereby the elongated member passing through the tubular gasket bore may be subjected at all times to at least a relatively low pressure seal from the resilient, annular rib, irrespective of the pressure of the variable pressure seal. Additionally, the pressure on the gasket may be applied and released by means of a pressure member positioned against the gasket. Means are provided permitting longitudinal motion, but preventing rotational motion, of the pressure member. A rotatable cap is provided, with facing, mating spiral track means carried on both the inner face of the rotatable cap and outer face of the pressure member, to cause pressurizing advancement of the pressure member against the tubular gasket by rotation of the cap in one direction, and release of such pressurizing advancement by rotation of the cap in the other direction.
Description
~l2~
BACKGROUMD OF THE INVENTION
The present invention relates to lea]cprooE hemo-stasis valves.
In Bales, et al, U.S~ Patent No. 4,726,374, a hemo-stasis valve which is improved over other prior artversions is disclosed. Hemostasis valves are currently on catheters for perfcrming percutaneous transluminal coronary angioplasty (PTCA), as well as angiographic procedures, for example, where x-ray contrast fluid is inserted into the coronary artery.
In PTCA, stenotic regions of coronary blood vessels are dilated by advancing a dilation catheter through blood vessels into the stenotic region. The dilatation catheter advances over a guide wire, which guide wire moves forward, followed by the catheter, followed by another advance of the guide wire, etc. The guide wire-dilatation catheter system may be introduced through a guiding catheter to fa,cilitate its placement.
To prevent the leakage of blood out of the proximal end of the catheter, a hemostasis valve is provided at the proximal end, to prevent seepage of blood between the guide wire and the catheter. Besides the desiyn shown in the above-cited patent, numerous other types of hemostasis valves are known. See for example Stevens, 25 U.S. Patent No. 4,000,739. Another design of hemostasis valve is the Tuohy-Borst type, making use of an adjust-able, compressive sleeve which is axially compressed ~.~9~
2a about the guide wire that it seals by means of a two-piece, screw threaded housing. Other designs may use an "O" ring and a ~-~9~
topered 028t ln~ead of a ~leeve.
Msny desi~ns require tl8htening of the ~alve ~hen high pres~ure ~-r~g contr~t fluid or the like i~ run through the catheter. Ho~ever, ~ith ~uch high pressure sealing, ~he guide vire cannot be sdvanced in efective ~anner, so the ~al~e, BUCh S8 B Tuohy-bor6t ~lv~, ~u~t be loosened 80 thBt the operator can "feel" any resistance encountered by the orwsrd sdYancement of thP ~ulde wire, durin~ the oper~tion of ad~ncing the guide vire through blo~d ~e~els.
The degree of loosen~n~ of the ~alve can be critical. If excessively loosened, low pressure le&kage ~y occur. If loosened too lietle, the guide ~ire cannot be effecti~ely ad~anced. Accordingl~, lt turns out that for the ~06t effecti~e perfor~ance of PTCA ~nd an~iogr~phy procedures, a hemostasis ~alYe ~hich i8 highly controllable i8 needed, 60 that the guide ~ire can be easil~ ~dv~nced, ~hile low pressure leakage i6 prevented on an e~sy, reliable bQsis, without the Deed for gre~t skill and experience in operation of the vnlve.
Thus ~ he~ostasi6 YalYe should be provided with reliable sealing against lo~ pressure leakaee ~round ~ guide ~lre or the like. At the same time, an ad~ustable ~eal should al60 be pro~ided whlch ~y be adjusted ~o seal ~gai~st high pressures. Accordingly, the ~djustable seal ~ay be spplied or released as desired, but, preferabl~ ~t lesst a lo~ pressure seal ~a~ be constantly present to stop leakage upon release of the high pres~ure seal. Thus, ~anipulation of the high pressure ~e~l is less critical, and requires less skill in order to avoid leakage.
Also, the surgeon who is manipulating a typical catheter for entering coronary blood vessels, for exam-ple, is overburdened with respect to things to hold and manipulate during this process. The hemostasis valve described above provides improved efficiency of adjust-ment of the adjustable valve, to relieve the burden on the surgeon.
While the invention of the cited U.S. patent No.
~,726,374 provides improved efficiency of adjustment, it does so by the addition of a second sealing site, spaced from a first adjustable, compressible sleeve valve which is provided to give the variable pressure sealing. It is of course a complexity of manufacture to provide a second sealing site, requiring a second sleeve or gasket.
By this invention, improved efficiency of adjust-ment of the hemostasis valve of this invention can be provided through the use of a single, compressible tubular sleeve or gasket. In this gasket, high pressure sealing may be applied, or released, to alternatively permit the application of high pressure x-ray contrast fluid or the like, and also to permit advancement of catheters and guide wires without blood leakage through the application of a low pressure seal which remains, ~ven when the high pressure seal is released. Despite this, the advantage remains that only a single 4a resil.ient, tubular gasket is present to provide bokh of these functions.
Additionally by this invention, an improved struc-ture for application and release o* the adjustable, high pressurizable seal is provided.
DE5CRIPTION OF_THE_I E TION
In accordance with the presenk invention, there ls provided a guide~wire dilatation catheter system, which comprises a dilatation catheter for receiving a guide-wire, a guide-wire and a hemosta~is valve connected to the proximal end of the catheter. The hemostasis valve comprises a housing having a first bore extending through the housing, the housing bore de~ining an enlarged chamber portion which has an open outer end and which carries and retains a single, unitary tubular, resilient gasket having a second bore defined by a wall in generally coaxial relation with the first bore. The wall defining the second bore is adapted for variable compression about the guide-wire substantially through-out the entire length of the second bore.
Rotatable handle means are provided for rotating in one direction to pressurize the gasket to cause con-striction of the second bore and for rotating in the opposite direction to release the pressure on the gasket to permit e~pansion of the second bore, whereby guide-means passing through the second bore may be subjected to a variable pressure seal.
The second bore has a substantially uniform diameter throughout its length except that it has at least one resilient, annular rib extending radially inwardly, whereby the guide-wire passing through the 5a tubular gasket bore may be subjected at all times to at least a relatively low pre~sure seal from the resilient, annular rib irrespective o~ the pressure applied by the variable pressure seal.
~he tubular, resilient gasket may define a generally conical inner end. The corresponding inner end of the enlarged cha~ber portion may al~o be of a similar, ~.ts~ )O~
3enerallJ conicsl ~h~pe. The bore6 of the gasket ~nd hou~lng extend re~pecti~ely throu~h the spexes of the oon~cal ~hape~
of their inner en~s, ~o facilitate re~i~tr~tiDn of the bores as ehe gssket is tompressed, ~pecificslly exially compressed.
Typically, the resilient, annular rib is located ~djacent the ~enerslly conic~l inner end o the ga~ket.
However, the rib may be located at other positisns along the bore of fiaid tubular gssket. ~dditionally, 8 plurality of resilient ~nulBr ribB ~ be proYided ~ithi~ the bore of the . 10 ~ket if de~ired~
The housing typirally defines a br~nch tube for fluid flow therethrough, the brsnch tube being spnced from one tubulsr hou6ing end by the tubular g~sket.
Additionall7 or alternntl~el~, the he~o6ta~i~ val~e of thi~ in~ention may carry ~ particulurl~ ~d~ant~geous s~stem for co~pres6ing ~ tubular, resilient 8aaket for pro~iding 8 vnriable presfiure seal ag~ins~ an elon~ated oe~ber 6uch as ~ catheter end/or ~t~let positioned vithin the housin8 -The hou6ing defines ~ fir~t bore extendin~
therethrou~h, ~ith the housing bore defining 0n enlarged chamber portion of the bore which has ~n open outer end, and ~hich carries and retains the tubular, resilient gasket hsYing ~ ~econd bore po6itioned in gener~ coaxial relation ~ith the first bore. This tubular, resilient ~asket ~Ry be of the t~pe pre~iously described 9 or ~ay be a gasket of the type used in the prior nr~. if desired.
A pressure ~e~ber i6 also carried in the enl~rged ~9~o~
cha~ber portion ~t an out~srd pD6ition fr~ salt ~a6ket. The pressure member defines 9 thlrd bore po~itioned in ~enerall~
coaxlsl relation with the fir6t ~nd ~econd bores. Means ~re proYided for permitting longitudinal ~otion but preYentinæ
rotational motion by the pressure ~ember.
A rotstable C8p iB pro~ided, closin~ the open 9 outer end of the enlarged chamber portion, the cap definin8 an aperture for access to the bores. F~cing, mating spiral tr~ck seans are carried on the inner fsce of the rotatsble cap ~nd the outer face of the pressure ~ember, to e~u~e pressurizing ad~ancement of the pressure ~ember a~ainst the tubular gesket b~ rotation of the C8p in one direetion, and release of ~uch pre~surizing sdv~ncement b~ rot~tion of the cap in the other directlon.
Thu~ by this ~ean~, an i~pro~e~ent i8 pro~ided in the way bg ~hich the tubular, resilient gnsket ~ay be A~iall~
compressed, to provlde the desired ~alving to ~ny elongated member such ~s e catheter ~nd ~t~let pa~sing through the g~sket bore.
Preferably~ the me~ns per~ittlng lon~itudinal ootion of the pressure member but preventing rotationnl motion ~re provided bg c~using the pressure member to define a polygonal periphery, ~hich periphery engages a corre~ponding, mating~ polgRonsl sectlon of the chumber portion, to permit such longit~dinal motion of the pre~ure member imparted b~ the rotatable cap~ ~hile preYenting rotational ~otion.
By these ~eans, an improYed hemostasis val~e may be provided, in whlch ~ ~ingle, tubular ~a~ket provlde~ both ~riable pres6ure ~e~llng to Qn elong~eed ~ember pa~6ing throu~h its bore, ~o that high presæure ~ealing i~ aYailable 8 t an~ time. At the 6ame time, ~he ~ame gesket ~ay provide a continuous, non~d~ustsble, ~econd type of seallng which proYides continuous, low pressure sealing ~at lease) irrespective of the adjustment of the vsriable pressure seal.
Thus the disad~antages of the prior art ~ay be overco~e with the u6e of a ~ingle ~asket ~e~ber, ~nd 8180 sn optional, novel advancing ~ean~ to control the pre~6ure on the 8a~ket.
DESCRIPTION OF THE DRAWINGS
In the dr~ing~, Fig. 1 i6 a perepecti~e viev of one embodiment of a hemostasis v~lve in accordAnce wlth thi~
invention, csrried on the end of a c~theter.
Fig. 2A is a sectionsl view tsken ~long line 2-2 of Fi8. 1, ~hown in condition ~hen the tubular, resilient ~nskee 1~ under reduced co~pres~i~e pressure.
Fig. 2B is ~ fragment~ry, ~ectional vie~ s~milar to that 6hown in Fig, 2A, but 6howing the cond~tion ~hen the tubular, resilient gasket i8 compressed.
Fi8. 3 is a ~ectional view taken along line 3-3 of Fig. 2A.
Figo 4 is a fragmentary, exploded, per6pectiYe Yiew of cereain interior psrts of the device of Figs. 1-3.
~.2~
DESCRIPTION OF SPECI~IC EMBODIMENT
Reerrlng to the dra~ing~ D hemostasis val~e 10 1~
shown to be attached to the end of a catheter 12 by ~eans of A luer lock conneceor 14 of conventional desi~n which connects to 8 oorresponding, convention~l luer lock connector carried on the end of the catheter.
Luer lock connecter 14 c~rries ~ rotatable threaded out 16 vhich i~ carried by flange~ 18 on the bod~ of hou~ing 20 o ~he he~o~t~ slve. O-rin~ 22 ~a~ be pro~ided for sesling purpo~es, ~hile projecting tubular portion 24 of housing 20 communicates ~ith bore of cstheter 12.
Housing 20 define~ a first bore 26 of Y0riable di~eter extendin~ therethrough. Housing bore 26 define~ a~
enl~rged chamber portion 28 which has an Dpen, ou~er end as ~ho~n and ~hioh ree~ins a tubular, resilient gafiket 30 haYing a second bore 32 posl~ioned in genernlly coaxiel relation ~ith fir~t bore 26~
Rotn~able handle ~eans 34 are provided for rotating in one direction to longitudinally pressurize Basket 30, to cause constriction of second bore 32. Thus, ~ngiopl~st~
catheter 36, or sny other elongated me~ber extending through the bore defined ~.hrough hemostasis valve 10 msy be radi~lly compress~d within bore 32 of gasket 30 a~ ~hovn, for example, in Figl 2B. Catheter 36 is deleted from Figs. 2-3 for purposes of clear disclosure.
Handle 34 ~a~ be rota~ed in the opposlte direction to release pressure on ~asket 30, to permit expansion of .2 ~
~econd bore 32 as ~ho~n ln ~8- 2~. Thus, ~ny cstheter or other elongated ~ember residin8 in the bore 3~ which pa~se6 through hemostasi~ valve 10 ~ay be 6ubjected to a radiall~
compressl~e seal of variable pre~sure.
Tubular side arm 38 of vslve 10 defines a bore 40 ~hich communicates in branching relationship with bore 26 of housing 20. ~hus, 1uids such ~s x-ray contrast fluid may be - spplied throu~h side ~rm 38 to the bore of c~theter 12 in a P~CA procedure or the like, vhile ~slve 10 ls ln the configuration shown in Fig. 2B, ~o th~t hi~hly compressed 2s6ket 30 prevents leakege of contrast fluid around catheter 36 outwardly through the distsl end 42 of hemo6tasis val~e 10. However, when ~nd if it is dee~ed ad~isable to adYnnce cstheter 36, ~hich ~ay contain ~ flexible ~tglet or the like, the pressure on gasket 30 ~8y be released as 6hown in Fig. 2A
~o permit ~uch cd~ancement of the catheter throuRh ~ores 32 and 26.
In ~ccordance ~ith thi~ lnvention, to prevent backflow of blood or the like while odvancing ~ ~ember such as catheter 36, 8asket 30 defines st least one resilient, ~nnular, resilient rib 44 pro~ecting into the bore 32 of gasket 30. As the result of this, ~hen an elongated member such as catheter 36 extends through tubular gasket bore 32, and typicall~ through the entire l~ngth of ~slve 10, the elongated member ~ay be sub~ected ~t all ti~es to at least a relstively low pressure seal from resi~ient, annulnr rib 44, irrespecti~e of any added pressure applied by the variable pressure sesl ~hich is controlled by the position of hsndle 34. Thus, the le~k~e of blood or the like rearv~rdl~ out ~f proxi~al end 42 ~ay be preYented, BO th~t the 6urgeon does not need ~o vorr~ ~bout it a6 he proceeds ~leh hi6 PTCA
surgic~l procedure or ~ny other desired procedure.
If desired, added ~ealing rings correspondin~ to annuler rib 44 ~8y be pl~ced within bore 32 of g~sket 30.
Gasket 30 may define ~ ~ener~lly conical inner end 46. The corresponding inner end 4B of enlarged ch&mber 28, in Yhich gssket 30 resides, ~ay also be of si~ r, ge~erall~
conical sh~pe. Thls facilitatefi the registra~on of the constricted portion 50 of housing 20 ~ith bore 3? 8s g~sket 30 is axislly compressed.
Turning to the 6ystem by vhich gasket 20 ~ay be compressed or relea6ed from compression 88 de~ired, pre~sure member 52 i5 also csrried in enlerged chamber portion 28 ~t an outward or proximal position from Basket 30. Pressure ~ember 52 defines ~ third bore 54 positloned in generally coaxifll relation with first ~nd 6econd bores 26, 32.
Further~ore, pressure ~e~ber 52 resides in hou~ing 20 in a ~anner permitting its longitudinsl ~otion but preventin~ itB
rotationsl moeion. This i~ accompli~hed 88 sho~D in Fl~ 3 by providing ~ polygonal configurstion to the peripherg of pressure ~ember 52~ nnd a corresponding poly~on~l configuration to that section 56 of the bore of housing 20 in which pressure member 52 resides. Section 56 msy terminate at its distal or lnner end at annulsr step 60, and m&y extend eO the outer end of housiD~ 20. Projecting inner portion 57 of hsndle ~ember 34, on which spir~l track 66 is found, i8 Of ~all enough di~meter 80 ac not to be re~trlcted fro~
rotation by the pol~onal bore.
Thus 9 pres6ure ~ember 52 can be ~dv~nced ~nd retracted to longieudinally compress gssket 30, but it cannot rotate.
Handle ~ember 34 defines ~ rotstcble c~p, closing the open outer end of the enlarged chamber portion 28 of housing 20. C8p 34 defines an sperture 62 for ~ccess to bcres 54, 32, and 26. CBP 36 oay be eonvention~ a~t~ched by onap fit ~e~ns ~ ~ho~n in Fi~s. 2A and 2B.
Facin~, mating spir~l track ~e~ns 66, 68 sre respeetivel~ c&rried on the inner face of rot~t~ble cap 34 and the outer face of pressure 0e~ber 52, 80 that spiral track me~ns 66, 6B obut each other. As handle ~ember 34 is rotat~d9 8ince handle member 34 i8 offi~ed br a snsp-fit connection so that it cannot ~ove Axi~lly, pressure ~ember 52 i8 forced to ~oYe axially either in an ~dY~ncing direction, to pre6surize gasket 30, or ~ retracting direction to release such pressure. Thus control of the ~lvln~ ~ressure of gasket 30 i8 MChieVed. ~180, the presence of ot lenst one annular 6esling rib provides a cer~ain leYel of continuous, low pressure sealing for a catheter 36 ~hich extends through bore 32 in any rotational position of handle 34.
Thus~ by this inYention, a ~ingle, tubulflr g~sket provides both variable pressure sealing vith ~i~ultaneous, continuous, low pressure sealing, irrespective of the ad~ustment oE the vsriable pressure ae~l. This i8 accompli~hed b~ a novel means for i~position and release of l.Zg~OO~
~uch Y~ri~ble pressure ~e~l.
The aboYe h88 been offered ~or lllu6tr~tiYe purpose~ onl7, ~nd i~ not intended to limi~ the scope of the invention of this applicetion, ~hich i6 as defined ln the clci~s below.
BACKGROUMD OF THE INVENTION
The present invention relates to lea]cprooE hemo-stasis valves.
In Bales, et al, U.S~ Patent No. 4,726,374, a hemo-stasis valve which is improved over other prior artversions is disclosed. Hemostasis valves are currently on catheters for perfcrming percutaneous transluminal coronary angioplasty (PTCA), as well as angiographic procedures, for example, where x-ray contrast fluid is inserted into the coronary artery.
In PTCA, stenotic regions of coronary blood vessels are dilated by advancing a dilation catheter through blood vessels into the stenotic region. The dilatation catheter advances over a guide wire, which guide wire moves forward, followed by the catheter, followed by another advance of the guide wire, etc. The guide wire-dilatation catheter system may be introduced through a guiding catheter to fa,cilitate its placement.
To prevent the leakage of blood out of the proximal end of the catheter, a hemostasis valve is provided at the proximal end, to prevent seepage of blood between the guide wire and the catheter. Besides the desiyn shown in the above-cited patent, numerous other types of hemostasis valves are known. See for example Stevens, 25 U.S. Patent No. 4,000,739. Another design of hemostasis valve is the Tuohy-Borst type, making use of an adjust-able, compressive sleeve which is axially compressed ~.~9~
2a about the guide wire that it seals by means of a two-piece, screw threaded housing. Other designs may use an "O" ring and a ~-~9~
topered 028t ln~ead of a ~leeve.
Msny desi~ns require tl8htening of the ~alve ~hen high pres~ure ~-r~g contr~t fluid or the like i~ run through the catheter. Ho~ever, ~ith ~uch high pressure sealing, ~he guide vire cannot be sdvanced in efective ~anner, so the ~al~e, BUCh S8 B Tuohy-bor6t ~lv~, ~u~t be loosened 80 thBt the operator can "feel" any resistance encountered by the orwsrd sdYancement of thP ~ulde wire, durin~ the oper~tion of ad~ncing the guide vire through blo~d ~e~els.
The degree of loosen~n~ of the ~alve can be critical. If excessively loosened, low pressure le&kage ~y occur. If loosened too lietle, the guide ~ire cannot be effecti~ely ad~anced. Accordingl~, lt turns out that for the ~06t effecti~e perfor~ance of PTCA ~nd an~iogr~phy procedures, a hemostasis ~alYe ~hich i8 highly controllable i8 needed, 60 that the guide ~ire can be easil~ ~dv~nced, ~hile low pressure leakage i6 prevented on an e~sy, reliable bQsis, without the Deed for gre~t skill and experience in operation of the vnlve.
Thus ~ he~ostasi6 YalYe should be provided with reliable sealing against lo~ pressure leakaee ~round ~ guide ~lre or the like. At the same time, an ad~ustable ~eal should al60 be pro~ided whlch ~y be adjusted ~o seal ~gai~st high pressures. Accordingly, the ~djustable seal ~ay be spplied or released as desired, but, preferabl~ ~t lesst a lo~ pressure seal ~a~ be constantly present to stop leakage upon release of the high pres~ure seal. Thus, ~anipulation of the high pressure ~e~l is less critical, and requires less skill in order to avoid leakage.
Also, the surgeon who is manipulating a typical catheter for entering coronary blood vessels, for exam-ple, is overburdened with respect to things to hold and manipulate during this process. The hemostasis valve described above provides improved efficiency of adjust-ment of the adjustable valve, to relieve the burden on the surgeon.
While the invention of the cited U.S. patent No.
~,726,374 provides improved efficiency of adjustment, it does so by the addition of a second sealing site, spaced from a first adjustable, compressible sleeve valve which is provided to give the variable pressure sealing. It is of course a complexity of manufacture to provide a second sealing site, requiring a second sleeve or gasket.
By this invention, improved efficiency of adjust-ment of the hemostasis valve of this invention can be provided through the use of a single, compressible tubular sleeve or gasket. In this gasket, high pressure sealing may be applied, or released, to alternatively permit the application of high pressure x-ray contrast fluid or the like, and also to permit advancement of catheters and guide wires without blood leakage through the application of a low pressure seal which remains, ~ven when the high pressure seal is released. Despite this, the advantage remains that only a single 4a resil.ient, tubular gasket is present to provide bokh of these functions.
Additionally by this invention, an improved struc-ture for application and release o* the adjustable, high pressurizable seal is provided.
DE5CRIPTION OF_THE_I E TION
In accordance with the presenk invention, there ls provided a guide~wire dilatation catheter system, which comprises a dilatation catheter for receiving a guide-wire, a guide-wire and a hemosta~is valve connected to the proximal end of the catheter. The hemostasis valve comprises a housing having a first bore extending through the housing, the housing bore de~ining an enlarged chamber portion which has an open outer end and which carries and retains a single, unitary tubular, resilient gasket having a second bore defined by a wall in generally coaxial relation with the first bore. The wall defining the second bore is adapted for variable compression about the guide-wire substantially through-out the entire length of the second bore.
Rotatable handle means are provided for rotating in one direction to pressurize the gasket to cause con-striction of the second bore and for rotating in the opposite direction to release the pressure on the gasket to permit e~pansion of the second bore, whereby guide-means passing through the second bore may be subjected to a variable pressure seal.
The second bore has a substantially uniform diameter throughout its length except that it has at least one resilient, annular rib extending radially inwardly, whereby the guide-wire passing through the 5a tubular gasket bore may be subjected at all times to at least a relatively low pre~sure seal from the resilient, annular rib irrespective o~ the pressure applied by the variable pressure seal.
~he tubular, resilient gasket may define a generally conical inner end. The corresponding inner end of the enlarged cha~ber portion may al~o be of a similar, ~.ts~ )O~
3enerallJ conicsl ~h~pe. The bore6 of the gasket ~nd hou~lng extend re~pecti~ely throu~h the spexes of the oon~cal ~hape~
of their inner en~s, ~o facilitate re~i~tr~tiDn of the bores as ehe gssket is tompressed, ~pecificslly exially compressed.
Typically, the resilient, annular rib is located ~djacent the ~enerslly conic~l inner end o the ga~ket.
However, the rib may be located at other positisns along the bore of fiaid tubular gssket. ~dditionally, 8 plurality of resilient ~nulBr ribB ~ be proYided ~ithi~ the bore of the . 10 ~ket if de~ired~
The housing typirally defines a br~nch tube for fluid flow therethrough, the brsnch tube being spnced from one tubulsr hou6ing end by the tubular g~sket.
Additionall7 or alternntl~el~, the he~o6ta~i~ val~e of thi~ in~ention may carry ~ particulurl~ ~d~ant~geous s~stem for co~pres6ing ~ tubular, resilient 8aaket for pro~iding 8 vnriable presfiure seal ag~ins~ an elon~ated oe~ber 6uch as ~ catheter end/or ~t~let positioned vithin the housin8 -The hou6ing defines ~ fir~t bore extendin~
therethrou~h, ~ith the housing bore defining 0n enlarged chamber portion of the bore which has ~n open outer end, and ~hich carries and retains the tubular, resilient gasket hsYing ~ ~econd bore po6itioned in gener~ coaxial relation ~ith the first bore. This tubular, resilient ~asket ~Ry be of the t~pe pre~iously described 9 or ~ay be a gasket of the type used in the prior nr~. if desired.
A pressure ~e~ber i6 also carried in the enl~rged ~9~o~
cha~ber portion ~t an out~srd pD6ition fr~ salt ~a6ket. The pressure member defines 9 thlrd bore po~itioned in ~enerall~
coaxlsl relation with the fir6t ~nd ~econd bores. Means ~re proYided for permitting longitudinal ~otion but preYentinæ
rotational motion by the pressure ~ember.
A rotstable C8p iB pro~ided, closin~ the open 9 outer end of the enlarged chamber portion, the cap definin8 an aperture for access to the bores. F~cing, mating spiral tr~ck seans are carried on the inner fsce of the rotatsble cap ~nd the outer face of the pressure ~ember, to e~u~e pressurizing ad~ancement of the pressure ~ember a~ainst the tubular gesket b~ rotation of the C8p in one direetion, and release of ~uch pre~surizing sdv~ncement b~ rot~tion of the cap in the other directlon.
Thu~ by this ~ean~, an i~pro~e~ent i8 pro~ided in the way bg ~hich the tubular, resilient gnsket ~ay be A~iall~
compressed, to provlde the desired ~alving to ~ny elongated member such ~s e catheter ~nd ~t~let pa~sing through the g~sket bore.
Preferably~ the me~ns per~ittlng lon~itudinal ootion of the pressure member but preventing rotationnl motion ~re provided bg c~using the pressure member to define a polygonal periphery, ~hich periphery engages a corre~ponding, mating~ polgRonsl sectlon of the chumber portion, to permit such longit~dinal motion of the pre~ure member imparted b~ the rotatable cap~ ~hile preYenting rotational ~otion.
By these ~eans, an improYed hemostasis val~e may be provided, in whlch ~ ~ingle, tubular ~a~ket provlde~ both ~riable pres6ure ~e~llng to Qn elong~eed ~ember pa~6ing throu~h its bore, ~o that high presæure ~ealing i~ aYailable 8 t an~ time. At the 6ame time, ~he ~ame gesket ~ay provide a continuous, non~d~ustsble, ~econd type of seallng which proYides continuous, low pressure sealing ~at lease) irrespective of the adjustment of the vsriable pressure seal.
Thus the disad~antages of the prior art ~ay be overco~e with the u6e of a ~ingle ~asket ~e~ber, ~nd 8180 sn optional, novel advancing ~ean~ to control the pre~6ure on the 8a~ket.
DESCRIPTION OF THE DRAWINGS
In the dr~ing~, Fig. 1 i6 a perepecti~e viev of one embodiment of a hemostasis v~lve in accordAnce wlth thi~
invention, csrried on the end of a c~theter.
Fig. 2A is a sectionsl view tsken ~long line 2-2 of Fi8. 1, ~hown in condition ~hen the tubular, resilient ~nskee 1~ under reduced co~pres~i~e pressure.
Fig. 2B is ~ fragment~ry, ~ectional vie~ s~milar to that 6hown in Fig, 2A, but 6howing the cond~tion ~hen the tubular, resilient gasket i8 compressed.
Fi8. 3 is a ~ectional view taken along line 3-3 of Fig. 2A.
Figo 4 is a fragmentary, exploded, per6pectiYe Yiew of cereain interior psrts of the device of Figs. 1-3.
~.2~
DESCRIPTION OF SPECI~IC EMBODIMENT
Reerrlng to the dra~ing~ D hemostasis val~e 10 1~
shown to be attached to the end of a catheter 12 by ~eans of A luer lock conneceor 14 of conventional desi~n which connects to 8 oorresponding, convention~l luer lock connector carried on the end of the catheter.
Luer lock connecter 14 c~rries ~ rotatable threaded out 16 vhich i~ carried by flange~ 18 on the bod~ of hou~ing 20 o ~he he~o~t~ slve. O-rin~ 22 ~a~ be pro~ided for sesling purpo~es, ~hile projecting tubular portion 24 of housing 20 communicates ~ith bore of cstheter 12.
Housing 20 define~ a first bore 26 of Y0riable di~eter extendin~ therethrough. Housing bore 26 define~ a~
enl~rged chamber portion 28 which has an Dpen, ou~er end as ~ho~n and ~hioh ree~ins a tubular, resilient gafiket 30 haYing a second bore 32 posl~ioned in genernlly coaxiel relation ~ith fir~t bore 26~
Rotn~able handle ~eans 34 are provided for rotating in one direction to longitudinally pressurize Basket 30, to cause constriction of second bore 32. Thus, ~ngiopl~st~
catheter 36, or sny other elongated me~ber extending through the bore defined ~.hrough hemostasis valve 10 msy be radi~lly compress~d within bore 32 of gasket 30 a~ ~hovn, for example, in Figl 2B. Catheter 36 is deleted from Figs. 2-3 for purposes of clear disclosure.
Handle 34 ~a~ be rota~ed in the opposlte direction to release pressure on ~asket 30, to permit expansion of .2 ~
~econd bore 32 as ~ho~n ln ~8- 2~. Thus, ~ny cstheter or other elongated ~ember residin8 in the bore 3~ which pa~se6 through hemostasi~ valve 10 ~ay be 6ubjected to a radiall~
compressl~e seal of variable pre~sure.
Tubular side arm 38 of vslve 10 defines a bore 40 ~hich communicates in branching relationship with bore 26 of housing 20. ~hus, 1uids such ~s x-ray contrast fluid may be - spplied throu~h side ~rm 38 to the bore of c~theter 12 in a P~CA procedure or the like, vhile ~slve 10 ls ln the configuration shown in Fig. 2B, ~o th~t hi~hly compressed 2s6ket 30 prevents leakege of contrast fluid around catheter 36 outwardly through the distsl end 42 of hemo6tasis val~e 10. However, when ~nd if it is dee~ed ad~isable to adYnnce cstheter 36, ~hich ~ay contain ~ flexible ~tglet or the like, the pressure on gasket 30 ~8y be released as 6hown in Fig. 2A
~o permit ~uch cd~ancement of the catheter throuRh ~ores 32 and 26.
In ~ccordance ~ith thi~ lnvention, to prevent backflow of blood or the like while odvancing ~ ~ember such as catheter 36, 8asket 30 defines st least one resilient, ~nnular, resilient rib 44 pro~ecting into the bore 32 of gasket 30. As the result of this, ~hen an elongated member such as catheter 36 extends through tubular gasket bore 32, and typicall~ through the entire l~ngth of ~slve 10, the elongated member ~ay be sub~ected ~t all ti~es to at least a relstively low pressure seal from resi~ient, annulnr rib 44, irrespecti~e of any added pressure applied by the variable pressure sesl ~hich is controlled by the position of hsndle 34. Thus, the le~k~e of blood or the like rearv~rdl~ out ~f proxi~al end 42 ~ay be preYented, BO th~t the 6urgeon does not need ~o vorr~ ~bout it a6 he proceeds ~leh hi6 PTCA
surgic~l procedure or ~ny other desired procedure.
If desired, added ~ealing rings correspondin~ to annuler rib 44 ~8y be pl~ced within bore 32 of g~sket 30.
Gasket 30 may define ~ ~ener~lly conical inner end 46. The corresponding inner end 4B of enlarged ch&mber 28, in Yhich gssket 30 resides, ~ay also be of si~ r, ge~erall~
conical sh~pe. Thls facilitatefi the registra~on of the constricted portion 50 of housing 20 ~ith bore 3? 8s g~sket 30 is axislly compressed.
Turning to the 6ystem by vhich gasket 20 ~ay be compressed or relea6ed from compression 88 de~ired, pre~sure member 52 i5 also csrried in enlerged chamber portion 28 ~t an outward or proximal position from Basket 30. Pressure ~ember 52 defines ~ third bore 54 positloned in generally coaxifll relation with first ~nd 6econd bores 26, 32.
Further~ore, pressure ~e~ber 52 resides in hou~ing 20 in a ~anner permitting its longitudinsl ~otion but preventin~ itB
rotationsl moeion. This i~ accompli~hed 88 sho~D in Fl~ 3 by providing ~ polygonal configurstion to the peripherg of pressure ~ember 52~ nnd a corresponding poly~on~l configuration to that section 56 of the bore of housing 20 in which pressure member 52 resides. Section 56 msy terminate at its distal or lnner end at annulsr step 60, and m&y extend eO the outer end of housiD~ 20. Projecting inner portion 57 of hsndle ~ember 34, on which spir~l track 66 is found, i8 Of ~all enough di~meter 80 ac not to be re~trlcted fro~
rotation by the pol~onal bore.
Thus 9 pres6ure ~ember 52 can be ~dv~nced ~nd retracted to longieudinally compress gssket 30, but it cannot rotate.
Handle ~ember 34 defines ~ rotstcble c~p, closing the open outer end of the enlarged chamber portion 28 of housing 20. C8p 34 defines an sperture 62 for ~ccess to bcres 54, 32, and 26. CBP 36 oay be eonvention~ a~t~ched by onap fit ~e~ns ~ ~ho~n in Fi~s. 2A and 2B.
Facin~, mating spir~l track ~e~ns 66, 68 sre respeetivel~ c&rried on the inner face of rot~t~ble cap 34 and the outer face of pressure 0e~ber 52, 80 that spiral track me~ns 66, 6B obut each other. As handle ~ember 34 is rotat~d9 8ince handle member 34 i8 offi~ed br a snsp-fit connection so that it cannot ~ove Axi~lly, pressure ~ember 52 i8 forced to ~oYe axially either in an ~dY~ncing direction, to pre6surize gasket 30, or ~ retracting direction to release such pressure. Thus control of the ~lvln~ ~ressure of gasket 30 i8 MChieVed. ~180, the presence of ot lenst one annular 6esling rib provides a cer~ain leYel of continuous, low pressure sealing for a catheter 36 ~hich extends through bore 32 in any rotational position of handle 34.
Thus~ by this inYention, a ~ingle, tubulflr g~sket provides both variable pressure sealing vith ~i~ultaneous, continuous, low pressure sealing, irrespective of the ad~ustment oE the vsriable pressure ae~l. This i8 accompli~hed b~ a novel means for i~position and release of l.Zg~OO~
~uch Y~ri~ble pressure ~e~l.
The aboYe h88 been offered ~or lllu6tr~tiYe purpose~ onl7, ~nd i~ not intended to limi~ the scope of the invention of this applicetion, ~hich i6 as defined ln the clci~s below.
Claims (7)
1. A guide-wire dilatation catheter system, which comprises:
a dilatation catheter for receiving a guide-wire;
a guide-wire; and a hemostasis valve connected to the proximal end of said catheter; said hemostasis valve comprising:
a housing having a first bore extending through said housing, the first bore defining an enlarged chamber portion which has an open, outer end and which carries and retains a single, unitary tubular, resilient gasket having a second bore defined by a wall in generally coaxial relation with said first bore, the wall defining said second bore being adapted for variable compression about the guide-wire substantially throughout the entire length of the second bore; and rotatable handle mens for rotating in one direction to pressurize the gasket to cause constriction of the second bore and for rotating in the opposite direction to release said pressure on the gasket to permit expansion of said second bore, whereby a guide-wire passing through said second bore may be subjected to a variable pressure seal, the second bore having a substantially uniform diameter throughout its length except that it has at least one resilient, annular rib extending radially inwardly, whereby said guide-wire passing through said tubular gasket bore may be subjected at all times to at least a relatively low pressure seal from said resilient, annular rib, irrespective of the pressure applied by said variable pressure seal.
a dilatation catheter for receiving a guide-wire;
a guide-wire; and a hemostasis valve connected to the proximal end of said catheter; said hemostasis valve comprising:
a housing having a first bore extending through said housing, the first bore defining an enlarged chamber portion which has an open, outer end and which carries and retains a single, unitary tubular, resilient gasket having a second bore defined by a wall in generally coaxial relation with said first bore, the wall defining said second bore being adapted for variable compression about the guide-wire substantially throughout the entire length of the second bore; and rotatable handle mens for rotating in one direction to pressurize the gasket to cause constriction of the second bore and for rotating in the opposite direction to release said pressure on the gasket to permit expansion of said second bore, whereby a guide-wire passing through said second bore may be subjected to a variable pressure seal, the second bore having a substantially uniform diameter throughout its length except that it has at least one resilient, annular rib extending radially inwardly, whereby said guide-wire passing through said tubular gasket bore may be subjected at all times to at least a relatively low pressure seal from said resilient, annular rib, irrespective of the pressure applied by said variable pressure seal.
2. The system of claim 1 in which said tubular, resilient gasket defines a generally conical inner end, the inner end of said enlarged chamber portion being of correspondingly generally conical shape, the bores of said gasket and housing extending respectively through the apexes of the conical shapes of their inner ends, to facilitate registration of said bores as the gasket is compressed.
3. The system of claim 2 in which said resilient, annular rib is located adjacent to the generally conical end of said gasket.
4. The system of claim 2 which defines a branch tube for fluid flow in said housing, said branch tube being spaced from one tubular housing end by said gasket.
5. The system of claim 4 in which the other tubular housing end defines threaded connector means.
6. The system of claim 1 in which a pressure member is also carried in said enlarged chamber portion of the housing bore at an outward position from said gasket, said pressure member defining a third bore positioned in generally coaxial relation with said first and second bores, means permitting longitudinal motion but preventing rotational motion by said pressure member; a rotatable cap closing the open, outer end of the enlarged chamber portion, said cap defining an aperture for access to said bores; and facing, mating spiral track means carried on the inner face of said rotatable cap and outer face of said pressure member, to cause pressurizing advancement of said pressure member against the tubular gasket by rotation of the cap in one direction, and release of said pressurizing advancement by rotation of the cap in the other direction.
7. The system of claim 6 in which said pressure member defines a polygonal periphery, which engages a corresponding mating, polygonal section of said chamber portion, to permit said longitudinal motion and to prevent said rotational motion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US928,828 | 1986-11-10 | ||
US06/928,828 US4723550A (en) | 1986-11-10 | 1986-11-10 | Leakproof hemostasis valve with single valve member |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1291000C true CA1291000C (en) | 1991-10-22 |
Family
ID=25456838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000551374A Expired CA1291000C (en) | 1986-11-10 | 1987-11-09 | Leakproof hemostasis valve with single valve member |
Country Status (4)
Country | Link |
---|---|
US (1) | US4723550A (en) |
EP (1) | EP0267584A3 (en) |
JP (1) | JPS63147475A (en) |
CA (1) | CA1291000C (en) |
Families Citing this family (161)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5308336A (en) * | 1982-09-28 | 1994-05-03 | Applied Medical Resources | Seal protection mechanism |
US4790331A (en) * | 1986-12-02 | 1988-12-13 | Sherwood Medical Company | Method for placement of catheter in a blood vessel |
US5964785A (en) | 1988-01-25 | 1999-10-12 | Baxter International Inc. | Bayonet look cannula for pre-slit y-site |
EP0544653B1 (en) | 1988-01-25 | 1996-06-05 | Baxter International Inc. | Injection site |
US4886507A (en) * | 1988-02-01 | 1989-12-12 | Medex, Inc. | Y connector for angioplasty procedure |
DE8904025U1 (en) * | 1988-04-07 | 1989-05-24 | Schneider (Europe) Ag, Zuerich, Ch | |
CA1330412C (en) | 1988-07-08 | 1994-06-28 | Steven C. Jepson | Pre-slit injection site and tapered cannula |
US5000745A (en) * | 1988-11-18 | 1991-03-19 | Edward Weck Incorporated | Hemostatis valve |
IE62767B1 (en) | 1989-03-17 | 1995-02-22 | Baxter Int | Pre-slit injection site and tapered cannula |
US5484409A (en) * | 1989-08-25 | 1996-01-16 | Scimed Life Systems, Inc. | Intravascular catheter and method for use thereof |
US5127626A (en) * | 1989-10-31 | 1992-07-07 | Applied Vascular Devices, Inc. | Apparatus for sealing around members extending therethrough |
IE63252B1 (en) * | 1990-01-30 | 1995-04-05 | Bard Connaught | A device for use with a catheter |
US5125915A (en) * | 1990-03-02 | 1992-06-30 | Cardiopulmonics, Inc. | Locking y-connector for selective attachment to exterior of medical tubing |
JP2521181B2 (en) * | 1990-07-16 | 1996-07-31 | テルモ株式会社 | Wire rod operation equipment |
US5395342A (en) * | 1990-07-26 | 1995-03-07 | Yoon; Inbae | Endoscopic portal |
US5205831A (en) * | 1991-04-22 | 1993-04-27 | Burron Medical, Inc. | Compression gasket for y-connector |
US5338314A (en) * | 1991-04-22 | 1994-08-16 | B. Braun Medical, Inc. | Rotating Y-connector |
DE4121829C2 (en) * | 1991-07-02 | 1995-09-07 | Ethicon Gmbh | Sealing cap for a guide tube or a reduction sleeve for the introduction of a surgical instrument |
US5490837A (en) * | 1991-07-05 | 1996-02-13 | Scimed Life Systems, Inc. | Single operator exchange catheter having a distal catheter shaft section |
US5833706A (en) * | 1991-07-05 | 1998-11-10 | Scimed Life Systems, Inc. | Single operator exchange perfusion catheter having a distal catheter shaft section |
US5976107A (en) * | 1991-07-05 | 1999-11-02 | Scimed Life Systems. Inc. | Catheter having extendable guide wire lumen |
US5769812A (en) * | 1991-07-16 | 1998-06-23 | Heartport, Inc. | System for cardiac procedures |
US6482171B1 (en) | 1991-07-16 | 2002-11-19 | Heartport, Inc. | Multi-lumen catheter |
US5584803A (en) * | 1991-07-16 | 1996-12-17 | Heartport, Inc. | System for cardiac procedures |
US5385553A (en) * | 1991-07-18 | 1995-01-31 | Applied Medical Resources Corporation | Trocar with floating septum seal |
US5776125A (en) | 1991-07-30 | 1998-07-07 | Baxter International Inc. | Needleless vial access device |
US5125903A (en) * | 1991-08-01 | 1992-06-30 | Medtronic, Inc. | Hemostasis valve |
DE69229736D1 (en) * | 1991-08-30 | 1999-09-09 | Origin Medsystems | TROKAR WITH SEVERAL ADAPTERS AND A REMOVABLE OBTURATOR |
AU656628B2 (en) * | 1991-10-18 | 1995-02-09 | United States Surgical Corporation | Endoscopic surgical instrument for aspiration and irrigation |
US5197955A (en) * | 1991-10-18 | 1993-03-30 | Ethicon, Inc. | Universal seal for trocar assembly |
US5545142A (en) * | 1991-10-18 | 1996-08-13 | Ethicon, Inc. | Seal members for surgical trocars |
US6981966B2 (en) * | 1991-10-18 | 2006-01-03 | United States Surgical | Valve assembly for introducing instruments into body cavities |
US6569120B1 (en) | 1991-10-18 | 2003-05-27 | United States Surgical Corporation | Seal assembly |
US6652492B1 (en) * | 1991-12-13 | 2003-11-25 | Endovascular Technologies, Inc. | Dual valve, flexible sheath and method |
US6224619B1 (en) * | 1991-12-17 | 2001-05-01 | Heartport, Inc. | Blood vessel occlusion trocar having size and shape varying insertion body |
WO1993017750A1 (en) * | 1992-02-28 | 1993-09-16 | Scimed Life Systems, Inc. | Intravascular catheter and method for use thereof |
US20050096605A1 (en) * | 1992-04-24 | 2005-05-05 | Green David T. | Valve assembly for introducing instruments into body cavities |
CA2093748C (en) * | 1992-04-24 | 1996-11-12 | Roy D. Gravener | Valve assembly for introducing instruments into body cavities |
US5334160A (en) * | 1992-05-04 | 1994-08-02 | Scimed Life Systems, Inc. | Intravascular catheter with sleeve and method for use thereof |
US6663599B2 (en) * | 1992-05-06 | 2003-12-16 | Cook Incorporated | Hemostasis cannula |
US8753317B2 (en) * | 1992-05-06 | 2014-06-17 | Cook Medical Technologies Llc | Hemostasis cannula |
US5300034A (en) * | 1992-07-29 | 1994-04-05 | Minnesota Mining And Manufacturing Company | Iv injection site for the reception of a blunt cannula |
US5351383A (en) * | 1992-07-29 | 1994-10-04 | Minnesota Mining And Manufacturing Company | Method of making an injection or sampling site |
US5269764A (en) * | 1992-08-21 | 1993-12-14 | Devices For Vascular Intervention, Inc. | Hemostatic gasket and valve assembly |
US5352215A (en) * | 1992-08-26 | 1994-10-04 | Scimed Life Systems, Inc. | Y-adapter with a sideport radius |
DE4234452C2 (en) * | 1992-10-13 | 1994-08-18 | Ethicon Gmbh | Reducer for trocar sleeves |
US5338313A (en) * | 1992-12-17 | 1994-08-16 | Thomas J. Fogarty, M.D. | Adjustable valve having a radially compressible sealing body |
AU669026B2 (en) * | 1993-01-29 | 1996-05-23 | Becton Dickinson & Company | Catheter/needle assembly kit and method for administering therapeutic agents to the subarachnoid space |
US5407433A (en) | 1993-02-10 | 1995-04-18 | Origin Medsystems, Inc. | Gas-tight seal accommodating surgical instruments with a wide range of diameters |
US5342315A (en) * | 1993-04-12 | 1994-08-30 | Ethicon, Inc. | Trocar seal/protector assemblies |
US5389081A (en) * | 1993-05-18 | 1995-02-14 | United States Surgical Corporation | Stabilizer for a valve assembly for introducing instruments into body cavities |
US5657963A (en) * | 1993-06-16 | 1997-08-19 | United States Surgical Corporation | Seal assembly for accommodating introduction of surgical instruments |
US5492304A (en) * | 1993-06-16 | 1996-02-20 | United States Surgical Corporation | Seal assembly for accommodating introduction of surgical instruments |
US5549565A (en) * | 1993-07-13 | 1996-08-27 | Symbiosis Corporation | Reusable surgical trocar with disposable valve assembly |
CA2126150C (en) * | 1993-07-14 | 2005-02-22 | David T. Green | Seal assembly for accommodating introduction of surgical instruments |
US5354275A (en) * | 1993-09-13 | 1994-10-11 | Minnesota Mining And Manufacturing Company | Injection or sampling site |
JPH07163666A (en) * | 1993-12-16 | 1995-06-27 | Terumo Corp | Connector |
US5538509A (en) * | 1994-01-31 | 1996-07-23 | Richard-Allan Medical Industries, Inc. | Trocar assembly |
US5478309A (en) | 1994-05-27 | 1995-12-26 | William P. Sweezer, Jr. | Catheter system and method for providing cardiopulmonary bypass pump support during heart surgery |
US5752938A (en) * | 1994-09-12 | 1998-05-19 | Richard-Allan Medical Industries, Inc. | Seal for surgical instruments |
US5507732A (en) * | 1994-10-05 | 1996-04-16 | Medtronic, Inc. | Quick assembly catheter manifold |
US5554123A (en) * | 1994-10-31 | 1996-09-10 | Glenn Herskowitz | Portable infusion pump |
DE19526075C1 (en) * | 1995-07-18 | 1996-12-19 | Helmut Prof Dr M Wollschlaeger | Sealing valve with long body and connecting and sealing ends |
DK0868203T3 (en) * | 1995-10-24 | 2004-02-02 | Cook Inc | Hemostatic needle |
US5833213A (en) * | 1995-12-29 | 1998-11-10 | Rymed Technologies, Inc. | Multiple dose drug vial adapter for use with a vial having a pierceable septum and a needleless syringe |
US5788215A (en) * | 1995-12-29 | 1998-08-04 | Rymed Technologies | Medical intravenous administration line connectors having a luer or pressure activated valve |
US5954313A (en) * | 1995-12-29 | 1999-09-21 | Rymed Technologies, Inc. | Medical intravenous administration line connectors having a luer activated valve |
US5902264A (en) * | 1996-04-26 | 1999-05-11 | United States Surgical Corporation | Endoscopic surgical instrument for aspiration and irrigation |
US5895376A (en) | 1996-10-23 | 1999-04-20 | Mayo Foundation For Medical Education And Research | Hemostasis valve, system and assembly |
DE19712726C1 (en) * | 1997-03-26 | 1998-06-10 | Storz Karl Gmbh & Co | Tubular instrument, especially trocar, with instrument duct closed by flap valve |
US5755687A (en) * | 1997-04-01 | 1998-05-26 | Heartport, Inc. | Methods and devices for occluding a patient's ascending aorta |
US6090096A (en) | 1997-04-23 | 2000-07-18 | Heartport, Inc. | Antegrade cardioplegia catheter and method |
US5906595A (en) * | 1997-04-25 | 1999-05-25 | Ethicon Endo-Surgery, Inc. | Trocar having protector with flexible end and improved seal assembly |
DE69838231T2 (en) | 1997-05-02 | 2008-05-08 | United States Surgical Corp., Norwalk | The cannula assembly |
ES2329158T3 (en) | 1997-05-28 | 2009-11-23 | Tyco Healthcare Group Lp | OBTURATION SYSTEM FOR TROCAR. |
US5779697A (en) * | 1997-05-28 | 1998-07-14 | Linvatec Corporation | Arthroscopic cannula with fluid seals |
US5997562A (en) * | 1997-06-13 | 1999-12-07 | Percusurge, Inc. | Medical wire introducer and balloon protective sheath |
US5935112A (en) * | 1997-10-15 | 1999-08-10 | Stevens; Brian W. | Hemostasis valve with catheter/guidewire seals |
US5921968A (en) * | 1997-11-25 | 1999-07-13 | Merit Medical Systems, Inc. | Valve apparatus with adjustable quick-release mechanism |
US6162206A (en) * | 1997-12-23 | 2000-12-19 | Baxter International Inc. | Resealable access site |
US6159178A (en) | 1998-01-23 | 2000-12-12 | Heartport, Inc. | Methods and devices for occluding the ascending aorta and maintaining circulation of oxygenated blood in the patient when the patient's heart is arrested |
US5989224A (en) | 1998-02-23 | 1999-11-23 | Dexide Corporation | Universal seal for use with endoscopic cannula |
US5947927A (en) * | 1998-03-23 | 1999-09-07 | Scimed Life Systems, Inc. | Convertible catheter having a single proximal lumen |
US6402748B1 (en) * | 1998-09-23 | 2002-06-11 | Sherwood Services Ag | Electrosurgical device having a dielectrical seal |
US6632200B2 (en) | 2000-01-25 | 2003-10-14 | St. Jude Medical, Daig Division | Hemostasis valve |
US6595946B1 (en) * | 2000-02-25 | 2003-07-22 | United States Surgical Corporation | Valve assembly |
US6572590B1 (en) | 2000-07-13 | 2003-06-03 | Merit Medical Systems, Inc. | Adjustable quick-release valve with toggle capability |
US6712789B1 (en) | 2000-07-13 | 2004-03-30 | Medamicus, Inc. | Introducer having a movable valve assembly with removable side port |
US6942671B1 (en) | 2000-11-06 | 2005-09-13 | Tyco Healthcare Group Lp | Surgical sealing apparatus |
US20030225379A1 (en) * | 2002-02-19 | 2003-12-04 | Medamicus, Inc. | Composite stasis valve |
US20060220325A1 (en) * | 2002-04-26 | 2006-10-05 | Mcfarlane Richard H | Floating seal assembly for a trocar |
US7632250B2 (en) | 2002-05-10 | 2009-12-15 | Tyco Healthcare Group Lp | Introducer seal assembly |
WO2004010883A1 (en) | 2002-07-25 | 2004-02-05 | Sherwood Services Ag | Electrosurgical pencil with drag sensing capability |
US20040172008A1 (en) * | 2002-11-19 | 2004-09-02 | Gmp/Cardiac Care, Inc. | Hemostasis valve and method of using a hemostasis valve |
US20050038410A1 (en) * | 2003-04-23 | 2005-02-17 | Friedman Paul A. | Rotatable infusion sheath apparatus |
EP1660173B1 (en) * | 2003-08-26 | 2010-06-16 | Zerusa Limited | A haemostasis device |
US7842013B2 (en) * | 2004-01-23 | 2010-11-30 | Genico, Inc. | Trocar and cannula assembly having conical valve and related methods |
US7585288B2 (en) * | 2004-01-23 | 2009-09-08 | Genico, Inc. | Trocar and cannula assembly having conical valve and related methods |
US8083728B2 (en) * | 2004-03-18 | 2011-12-27 | C. R. Bard, Inc. | Multifunction adaptor for an open-ended catheter |
US7594910B2 (en) | 2004-03-18 | 2009-09-29 | C. R. Bard, Inc. | Catheter connector |
US7594911B2 (en) * | 2004-03-18 | 2009-09-29 | C. R. Bard, Inc. | Connector system for a proximally trimmable catheter |
US7578803B2 (en) * | 2004-03-18 | 2009-08-25 | C. R. Bard, Inc. | Multifunction adaptor for an open-ended catheter |
US7854731B2 (en) | 2004-03-18 | 2010-12-21 | C. R. Bard, Inc. | Valved catheter |
US7094218B2 (en) | 2004-03-18 | 2006-08-22 | C. R. Bard, Inc. | Valved catheter |
US7377915B2 (en) | 2004-04-01 | 2008-05-27 | C. R. Bard, Inc. | Catheter connector system |
DE602005008936D1 (en) | 2004-04-30 | 2008-09-25 | Bard Inc C R | IMMEDIATE INSTRUMENT WITH VALVE SLIDE FOR VENEER MANUFACTURING |
US8403890B2 (en) | 2004-11-29 | 2013-03-26 | C. R. Bard, Inc. | Reduced friction catheter introducer and method of manufacturing and using the same |
US8926564B2 (en) | 2004-11-29 | 2015-01-06 | C. R. Bard, Inc. | Catheter introducer including a valve and valve actuator |
US9597483B2 (en) | 2004-11-29 | 2017-03-21 | C. R. Bard, Inc. | Reduced-friction catheter introducer and method of manufacturing and using the same |
US8932260B2 (en) * | 2004-11-29 | 2015-01-13 | C. R. Bard, Inc. | Reduced-friction catheter introducer and method of manufacturing and using the same |
US7931624B2 (en) * | 2005-04-05 | 2011-04-26 | Tyco Healthcare Group Lp | Introducer seal assembly with low profile gimbal seal |
US7875019B2 (en) | 2005-06-20 | 2011-01-25 | C. R. Bard, Inc. | Connection system for multi-lumen catheter |
US7914519B2 (en) * | 2005-06-23 | 2011-03-29 | Elcam Medical Agricultural Cooperative Association, Ltd. | Catheter device |
US7500974B2 (en) | 2005-06-28 | 2009-03-10 | Covidien Ag | Electrode with rotatably deployable sheath |
US7828794B2 (en) * | 2005-08-25 | 2010-11-09 | Covidien Ag | Handheld electrosurgical apparatus for controlling operating room equipment |
US20070238928A1 (en) * | 2006-04-07 | 2007-10-11 | Boston Scientific Scimed, Inc. | Biopsy port for easy device passage |
US20080167628A1 (en) * | 2007-01-05 | 2008-07-10 | Boston Scientific Scimed, Inc. | Stent delivery system |
WO2009052327A1 (en) * | 2007-10-19 | 2009-04-23 | C.R. Bard, Inc. | Introducer including shaped distal region |
US20090131785A1 (en) * | 2007-11-15 | 2009-05-21 | University Of Florida Research Foundation, Inc. | Variable occlusional balloon catheter assembly |
US8128677B2 (en) | 2007-12-12 | 2012-03-06 | Intact Vascular LLC | Device and method for tacking plaque to a blood vessel wall |
US10166127B2 (en) | 2007-12-12 | 2019-01-01 | Intact Vascular, Inc. | Endoluminal device and method |
US9375327B2 (en) | 2007-12-12 | 2016-06-28 | Intact Vascular, Inc. | Endovascular implant |
US7896911B2 (en) | 2007-12-12 | 2011-03-01 | Innovasc Llc | Device and method for tacking plaque to blood vessel wall |
US9603730B2 (en) | 2007-12-12 | 2017-03-28 | Intact Vascular, Inc. | Endoluminal device and method |
US10022250B2 (en) | 2007-12-12 | 2018-07-17 | Intact Vascular, Inc. | Deployment device for placement of multiple intraluminal surgical staples |
US20100152646A1 (en) * | 2008-02-29 | 2010-06-17 | Reshma Girijavallabhan | Intravitreal injection device and method |
US7938809B2 (en) * | 2008-04-14 | 2011-05-10 | Merit Medical Systems, Inc. | Quick release hemostasis valve |
US20090259185A1 (en) * | 2008-04-15 | 2009-10-15 | Tyco Healthcare Group Lp | Self-conforming surgical seal |
EP2520320B1 (en) | 2008-07-01 | 2016-11-02 | Endologix, Inc. | Catheter system |
DE102008030942A1 (en) | 2008-07-02 | 2010-01-07 | Christoph Miethke Gmbh & Co Kg | Cerebrospinal fluid drainage |
EP2165731A1 (en) * | 2008-09-19 | 2010-03-24 | Terumo Medical Corporation | Detachable and freely rotating hemostasis valve |
AU2009322166A1 (en) | 2008-12-04 | 2011-07-21 | Pivot Medical, Inc. | Method and apparatus for accessing the interior of a hip joint, including the provision and use of a novel telescoping access cannula and novel telescoping obturator |
US8025642B2 (en) * | 2009-03-26 | 2011-09-27 | Tyco Health Group Lp | Powered variable seal diameter trocar employing a longitudinal displacement mechanism |
US8206357B2 (en) * | 2009-03-26 | 2012-06-26 | Tyco Healthcare Group Lp | Articulating surgical portal apparatus with spring |
US8337484B2 (en) * | 2009-06-26 | 2012-12-25 | C. R. Band, Inc. | Proximally trimmable catheter including pre-attached bifurcation and related methods |
US8454563B2 (en) | 2009-10-09 | 2013-06-04 | Rogelio A. Insignares | Trocar and cannula assembly having improved conical valve, and methods related thereto |
US20130237753A1 (en) * | 2009-11-06 | 2013-09-12 | Nico Corporation | Surgical interface for use with endoscope |
US8409086B2 (en) | 2009-12-18 | 2013-04-02 | Covidien Lp | Surgical portal with rotating seal |
US20110213450A1 (en) * | 2010-03-01 | 2011-09-01 | Koven Technology Canada, Inc. | Medical device delivery system |
US8652104B2 (en) | 2010-06-25 | 2014-02-18 | Smiths Medical Asd, Inc. | Catheter assembly with seal member |
US9545495B2 (en) | 2010-06-25 | 2017-01-17 | Smiths Medical Asd, Inc. | Catheter assembly with seal member |
CN105232195B (en) | 2011-03-01 | 2018-06-08 | 恩朵罗杰克斯股份有限公司 | Delivery catheter system |
US10390977B2 (en) | 2011-06-03 | 2019-08-27 | Intact Vascular, Inc. | Endovascular implant |
FR2976814B1 (en) * | 2011-06-22 | 2014-05-23 | Perouse Medical | HEMOSTATIC VALVE DEVICE FOR INTRODUCING MEDICAL DEVICE IN PATIENT, AND ASSOCIATED METHOD |
US10849771B2 (en) | 2011-06-27 | 2020-12-01 | Boston Scientific Scimed, Inc. | Stent delivery systems and methods for making and using stent delivery systems |
EP2606919A1 (en) * | 2011-12-22 | 2013-06-26 | ECP Entwicklungsgesellschaft mbH | Sluice device for inserting a catheter |
AU2013212056B2 (en) | 2012-01-25 | 2016-07-21 | Intact Vascular, Inc. | Endoluminal device and method |
EP3215211A4 (en) | 2014-11-07 | 2018-07-04 | C. R. Bard, Inc. | Connection system for tunneled catheters |
US9433520B2 (en) | 2015-01-29 | 2016-09-06 | Intact Vascular, Inc. | Delivery device and method of delivery |
US9375336B1 (en) | 2015-01-29 | 2016-06-28 | Intact Vascular, Inc. | Delivery device and method of delivery |
US11129737B2 (en) | 2015-06-30 | 2021-09-28 | Endologix Llc | Locking assembly for coupling guidewire to delivery system |
US10993824B2 (en) | 2016-01-01 | 2021-05-04 | Intact Vascular, Inc. | Delivery device and method of delivery |
US10842981B2 (en) | 2017-03-13 | 2020-11-24 | Boston Scientific Limited | Hemostasis valves and methods for making and using hemostasis valves |
US11291821B2 (en) | 2017-03-13 | 2022-04-05 | Boston Scientific Limited | Hemostasis valves and methods for making and using hemostasis valves |
WO2018169683A1 (en) | 2017-03-13 | 2018-09-20 | Boston Scientific Scimed, Inc. | Hemostasis valves and methods for making and using hemostasis valves |
WO2018169660A1 (en) | 2017-03-13 | 2018-09-20 | Boston Scientific Limited | Hemostasis valves and methods for making and using hemostasis valves |
US11660218B2 (en) | 2017-07-26 | 2023-05-30 | Intact Vascular, Inc. | Delivery device and method of delivery |
EP3672682A4 (en) | 2017-08-23 | 2021-05-19 | C.R. Bard, Inc. | Catheter assemblies and methods thereof |
WO2019055411A1 (en) | 2017-09-12 | 2019-03-21 | Boston Scientific Limited | Hemostasis valves and methods for making and using hemostasis valves |
US20190224450A1 (en) * | 2018-01-19 | 2019-07-25 | St. Jude Medical, Cardiology Division, Inc. | Locking guide catheter hubs |
AU2020279100B2 (en) * | 2019-05-17 | 2022-12-15 | Boston Scientific Scimed, Inc. | Apparatus to provide an adjustable mechanism for radial ultrasound port and flush port |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3180334A (en) * | 1961-08-11 | 1965-04-27 | Lorena L Glenn | Enema retention cup |
US4000739A (en) * | 1975-07-09 | 1977-01-04 | Cordis Corporation | Hemostasis cannula |
LU77252A1 (en) * | 1976-05-06 | 1977-08-22 | ||
JPS6034241Y2 (en) * | 1977-04-25 | 1985-10-12 | オリンパス光学工業株式会社 | Endoscope passage sealing device |
US4177814A (en) * | 1978-01-18 | 1979-12-11 | KLI, Incorporated | Self-sealing cannula |
US4303222A (en) * | 1980-02-06 | 1981-12-01 | Red Valve Company, Inc. | Pinch valve |
EP0045668A1 (en) * | 1980-08-06 | 1982-02-10 | Peter Steer Developments Limited | Device for controlling the flow of liquid |
DE3042229C2 (en) * | 1980-11-08 | 1983-10-27 | B. Braun Melsungen Ag, 3508 Melsungen | Insertion device for inserting elongated objects into blood vessels |
US4430081A (en) * | 1981-01-06 | 1984-02-07 | Cook, Inc. | Hemostasis sheath |
US4424833A (en) * | 1981-10-02 | 1984-01-10 | C. R. Bard, Inc. | Self sealing gasket assembly |
US4475548A (en) * | 1982-06-01 | 1984-10-09 | Rudolph Muto | Fitting for endotracheal tube apparatus and method of making the fitting |
DE3242238C2 (en) * | 1982-11-15 | 1985-02-14 | Peter Dr. März | Catheter coupling |
US4493710A (en) * | 1983-11-14 | 1985-01-15 | Ivy Medical, Inc. | Intravenous drip rate control device |
DE3574824D1 (en) * | 1985-02-02 | 1990-01-25 | Krayer Oriplast Gmbh | PINCH CONNECTOR. |
-
1986
- 1986-11-10 US US06/928,828 patent/US4723550A/en not_active Expired - Lifetime
-
1987
- 1987-11-06 JP JP62281944A patent/JPS63147475A/en active Pending
- 1987-11-09 CA CA000551374A patent/CA1291000C/en not_active Expired
- 1987-11-10 EP EP87116599A patent/EP0267584A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JPS63147475A (en) | 1988-06-20 |
EP0267584A3 (en) | 1989-07-26 |
EP0267584A2 (en) | 1988-05-18 |
US4723550A (en) | 1988-02-09 |
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