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Publication numberUS3747812 A
Publication typeGrant
Publication dateJul 24, 1973
Filing dateOct 21, 1971
Priority dateOct 21, 1971
Publication numberUS 3747812 A, US 3747812A, US-A-3747812, US3747812 A, US3747812A
InventorsH Karman, M Robins, L Wolf
Original AssigneeMedical Concepts Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Syringe
US 3747812 A
Abstract  available in
Images(1)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

llnited States Patent 1 Karrnan et a1.

[ SYRINGE [75] Inventors: Harvey Karman, Playa Del Rey; Milton Robins, El Segundo; Leo Wolf, Culver City, all of Calif.

[73] Assignee: Medical Concepts, Inc., El Segundo,

Calif.

22 Filed: Oct. 21, 1971 21 Appl.No.: 191,512

[52] U.S. Cl. 222/387, 128/215, 128/218 PA,

128/218 NV, 128/274 [51] Int. Cl B656 83/00 [58] Field of Search 222/387, 375, 380,

222/386, 548, 549, 550, 400.8, 309, 320, 331, 337, 357; 128/215, 218 R, 218 P, 218 PA, 218 NV, 218 C, 218 G, 234, 214 C, 274, 278

[451 July 24, 1973 FOREIGN PATENTS OR APPLICATIONS 746,057 3/1956 Great Britain 128/218 P Primary Examiner-Robert B. Reeves Assistant Examiner-Joseph J. Rolla Attorney-Ford W. Harris, Ii-. Walton Eugene Tinsley et a1.

[5 7] ABSTRACT A syringe particularly suited for producingand retaining a vacuum and utilizing the vacuum for drawing material into the syringe. A body with a plunger moving therein between piston in and out positions, and means for locking the plunger in the out position to maintain the vacuum and prevent accidental inward movement of the piston and limit outward movement. A plunger shaft with a shear zone for breaking off the shaft after producing the vacuum. A valve at the inlet and operable between open and closed positions for holding a vacuum and for controlling flow into the syringe. A check valve adjacent the inlet permitting fluid flow from the body.

5 Claims, 8 Drawing Figures SYRINGE This invention relates to syringes and in particular, to a new and improved syringe suitable for producing and retaining a vacuum and subsequently utilizing the vacuum for drawing material into the syringe. The syringe of the invention is intended to be used as a small, simple, inexpensive and portable vacuum source which can be used in any environment and which does not require a motor driven vacuum pump with power supply or the like. A typical syringe incorporating the invention may have a one inch bore with a four and one half inch stroke providing a substantial volume particularly suitable for various medical procedures, but of course the invention is not limited to any particular size of syringe and is readily adapted for larger and smaller units.

Important features of the vacuum syringe include provision for maintenance of the vacuum after producing it, provision for controlled release as desired, and prevention of unintentional release of vacuum or other actuation of the instrument.

Accordingly, it is an object of the present invention to provide a new and improved vacuum producing syringe. A further object is to provide such a syringe for producing and retaining a vacuum and incorporating valving for controlled use of the vacuum. An additional object is to provide such a syringe incorporating locking and other safety features. A particular object of the invention is to provide such a syringe which may utilize conventional syringe manufacturing techniques incorporating a few plastic and/or metal parts so as to be inexpensive and suitable for disposal after a single use.

Other objects, advantages, features and results will more fully appear in the course of the following description. Thedrawings merely show and the description merely describes the preferred embodiments of the present invention which are given by way of illustration or example.

In the drawing:

FIG. 1 is a perspective view, partly in section, of a syringe incorporating a presently preferred embodiment of the invention;.

FIG. 2 is a view similar to that of FIG. 1 showing the plunger in the out position;

FIG. 3 is an enlarged sectional view of the syringe of FIG. 2;

FIG. 4 is a sectional view taken along the line 4-4 of FIG. 3;

FIG. 5 is a side view, partly in section, of a syringe incorporating an alternative embodiment of the invention;

FIG. 6 is a partial view of the syringe of FIG. 5 showing the plunger in the out position;

FIG. 7 is a sectional view taken along the line 7-7 of FIG. 6; and

FIG. 8 is a view of the inlet of a syringe illustrating a pinch type of control valve.

The syringe of FIGS. 1-4 includes a body 10 having a bore Ill and inlet 12, with a valve 13 between the bore and inlet, and a plunger 14 with a piston 15 and shaft 16.

The valve 13 is a rotary or turret valve and may comprise valve members 21, 22 mounted in side-byside relation by means of a rivet or a screw 23 which is threaded into the member 21, with the member 22 rotating on a shoulder 24 of the screw. In the embodiment illustrated, the valve member 21 is formed integrally with the body It), typically being a plastic molded part, with a passage 27 in the member 21 communicating with the bore 11. Also, the valve member 22 may be formed integrally with the inlet 12, preferably being another molded plastic part, with a passage 28 in the member 22 communicating with the inlet 12. Another passage 29 may be provided in the member 22 serving as an outlet passage for emptying the syringe. The members 21, 22 may be provided with interengaging notches 30 and projection 31 providing detents for the open, closed and emptying positions of the valve, the valve being shown in the closed position in FIGS. 1 and 2 and in the open position in FIGS. 3 and 4.

A relief valve 34, typically a conventional flapper or duck call check valve, may be provided in the body It) adjacent the inlet end. A preferred form of the relief valve is shown in FIG. 3, comprising a tube of rubber or other flexible material with a flat, normally closed outer end 35. A slight build up of pressure within the bore 11 over the ambient pressure will open the end 35 and vent the bore, also permitting emptying the syringe. When there is a vacuum withinthe bore, the external pressure seals the end 35. A similar check valve 37 may be provided within the inlet 12 to block fluid flow from the bore through the inlet.

The piston 15 may be a unit molded of rubber or other flexible material which provides a sliding seal with the inner wall of the body as the plunger is moved. A petroleum jelly or the like may be used to improve the sealing action. The shaft 16 is connected at one end to the piston 15 and at the other end carries a cap 41 for manual grasping. The shaft may be of cruciform cross section between the piston and cap to provide maximum strength with minimum weight, and preferably is a molded plastic part.

Flanges 43 are provided at the upper or plunger end of the body 10, with a clip 44 carried on each of the flanges 43. The clips 44 typically are metal stampings, with turned over edges 45 for gripping the flanges 43, and with portions 46 projecting into the area of the bore to serve as stop brackets. Lips 47 may be provided on the brackets 46 to function as rotational stops and as an aid in the break-off procedure. As can be seen from FIG. 4, the brackets 46 project into the interstices between the arms 47 of the cruciform shaft. Notches 48 are provided in the shaft adjacent the piston 15 for engaging the brackets 46 as will be described. A notch 48 is provided for each bracket 46 and in the embodiment illustrated, the two opposing notches 48 are utilized. Notches 49 may be provided in each of the arms 47, with the notches 49 preferably deeper than the notches 48.

In use, the plunger is pushed in to the position of FIG. 1 and the valve 13 is rotated to the closed position of FIGS. 1 and 2. The plunger is then pulled out to the position of FIG. 2 and is rotated clockwise as viewed from the top of FIG. 2, to move the brackets 46 into the notches 48 (see FIG. 4). In this condition, the plunger is locked in the up or out position and a vacuum is maintained within the body of the syringe. If desired, an additional torque may be applied to the plunger to shear it at the reduced cross sectional area zone 52 formed by the notches 49. This breaking off of the plunger shaft eliminates the projecting shaft and substantially eliminates the possibility of the shaft being rotated to release the vacuum.

The syringe may now be used for drawing a material into the body through the inlet 12 by rotating the valve member 22 to the open or partially open position as desired. The inlet 12 may be given any desired configuration, and any suitable instrument may be mounted thereon. The syringe may be emptied by rotating the valve member 22 to the emptying position. Alternatively, the syringe may be emptied and a new vacuum produced by rotating the member 22 to the closed position and pumping the plunger in and out.

An alternative form of the syringe having a different valve construction and a different stop construction is illustrated in FIGS. 5, 6 and 7, where elements corresponding to those of FIGS. 1-4 are identified by the same reference numerals. The valve 13 comprises a valve body 55 formed in the lower or inlet end of the syringe body, and a valve plug 56 rotatably positioned in the valve body. The valve is shown in the closed position in FIG. 5, and may be manually rotated 90 by a tab 57 to bring a passage 58 of the plug 56 to the vertical position to provide a flow path between the inlet 12 and bore 11.

Two column members 60, typically plastic tubes, are positioned on opposite sides of the shaft of the plunger, and are fixed to the plunger at the upper or cap end by suitable means such as cementing or spring clips or integral molding or the like. An O-ring 59 is used in the embodiment illustrated. The lower or piston ends of the tubes 16 are free and the plunger and tubes are constructed so that the tubes are urged outward, as seen in FIG. 6. Notches 61 may be formed in the lower ends of the tubes 60 for better engagement with the upper end of the body 10 or stop clips 44 (if used).

The syringe is shown ready for use in FIG. with the valve closed and the plunger in the down or in position. The plunger is pulled out of the position of FIG. 6 which permits outward flaring of the members 60, with the lower ends of the members 60 engaging the shoulder formed at the top of the body to prevent inward movement of the plunger. If it is desired to push the plunger in, the members 60 are squeezed inwardly toward the center of the shaft out of engagement with the upper end of the body, permitting inward movement of the plunger.

While the valve 13 has been shown formed integrally with the syringe in the embodiment of FIGS. 14 and in the embodiment of FIGS. 5-7, the syringe may be constructed without the valve, and valves as shown in FIGS. 1-4 and FIGS. 5-7 may be coupled to the syringe by appropriate tubing if desired. One alternative utilzing a conventional spring clip type valve is illustrated in FIG. 8, with a short length of flexible tubing 62 fixed on the lower end of the syringe body and with a catheter or other suitable instrument 63 fixed in the other end of the tubing 62. A conventional pinch type spring clamp 64 is positioned on the tubing 62 to serve as a valve.

Although exemplary embodiments of the invention have been disclosed and discussed, it will be understood that other applications of the invention are possible and that the embodiments disclosed may be subjected to various changes, modifications and substitutions without necessarily departing from the spirit of invention.

We claim:

1. In a syringe for providing a vacuum at an inlet and including a body having a bore communicating with the syringe inlet and a plunger having a piston slidably positioned within said bore for movement by a plunger shaft projecting from a plunger end of said bore opposite said inlet, between a first position with said piston adjacent said inlet and a second position with said piston adjacent said plunger end, the improvement comprising valve means carried on said plunger body between said bore and inlet for controlling fluid flow therebetween, said valve means including:

first and second valve members; and

means for joining said valve members in side-by-side relation for rotation of one member relative to the other about an axis parallel to the axis of said plunger;

said first member having a first passage aligned with and communicating with said bore and said second member having a second passage communicating with said inlet and a third passage spaced from said second passage with said second member rotatable between an open position providing a fluid flow path from said inlet through said second and first passages to said bore, and a closed position blocking said fluid flow path, and a discharge position with said first and third passages aligned.

2. In a syringe for providing a vacuum at an inlet and including a body having a bore communicating with the syringe inlet and a plunger having a piston slidably positioned within said bore for movement by a plunger shaft projecting from a plunger end of said bore opposite said inlet, between a first axial position with said piston adjacent said inlet and a second axial position with said piston adjacent said plunger end,

the improvement comprising interengaging means on said body and plunger for locking said plunger in said second position, and including metal clips carried on oppositely projecting flanges of said body adjacent the plunger end, each of said clips projecting into said bore,

with said shaft having a cruciform configuration with arms forming walls defining axially disposed clearance zones for said clips for axial movement of said shaft past said clips in a first angular position, with opposed shaft walls having slots for receiving said clips with said shaft rotated to a second angular position,

with engagement of said clips and shaft at said slots locking said plunger in said second axial position, and

with a turned up lip on each clip forming a stop for limiting angular rotation of said shaft.

3. In a syringe for providing a vacuum at an inlet and including a body having a bore communicating with the syringe inlet and a plunger having a piston slidably positioned within said bore for movement by a plunger shaft projecting from a plunger end of said bore opposite said inlet, between a first position with said piston adjacent said inlet and a second position with said piston adjacent said plunger end,

the improvement comprising interengaging means on said body and the plunger for locking said plunger in said second position and including:

a shoulder on said body adjacent said plunger end;

and

a column member carreed on said shaft remote from said piston and positioned along said shaft with a free end extending toward said piston and urged 5. A syringe as defined in claim 3 wherein said shaft is of cruciform configuration and said column member is of plastic tubing, with two of said column members positioned in opposing interstices between the arms of said shaft, and an o-ring about said shaft and column members remote from said piston. =l= k

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3938513 *Jan 3, 1974Feb 17, 1976Hargest Thomas SSyringe filter and valve combination
US4043336 *Apr 21, 1976Aug 23, 1977Kreb Iii Robert JSterile syringe device
US4112932 *Feb 24, 1977Sep 12, 1978Chiulli Robert DLaparoscopic cannula
US4175559 *Apr 6, 1978Nov 27, 1979Kreb Robert J IiiSealable syringe
US4187849 *Jul 28, 1978Feb 12, 1980Stim Edward MSuction curettage device with valve control and support means for differing diameter tubes
US4296759 *Jun 27, 1977Oct 27, 1981Sherwood Medical Industries Inc.Blood collection device and method with anti-backflow means
US4320770 *May 3, 1979Mar 23, 1982Trans-Med CorporationDiagnostic specimen collector
US4367737 *Apr 6, 1981Jan 11, 1983George KozamMultiple barrel syringe
US4532935 *Mar 7, 1983Aug 6, 1985Wang Ko PBronchoscopic needle assembly
US4541548 *Aug 15, 1983Sep 17, 1985Red Devil, Inc.Dispenser with sniff device and method
US4610672 *Jun 10, 1985Sep 9, 1986Sherwood Medical CompanySyringe locking device
US4634428 *Aug 15, 1985Jan 6, 1987Cuu Cwo LiangCover for a disposable syringe
US4711637 *Feb 4, 1986Dec 8, 1987Baxter Travenol Laboratories, Inc.Syringe lock
US4758232 *Sep 8, 1987Jul 19, 1988Chak Choi KSuction syringe with an automatic locking means
US4766906 *Nov 1, 1982Aug 30, 1988Ko Pen WangBronchoscopic needle assembly
US4784637 *Mar 23, 1987Nov 15, 1988Ryder International CorporationAseptic irrigation syringe
US4820276 *Feb 8, 1988Apr 11, 1989Enrique MorenoFilter assembly for use with a hypodermic syringe
US4832694 *Feb 8, 1988May 23, 1989Raphael Iii Julian JProgrammed action hypodermic syringe
US4883466 *Apr 25, 1988Nov 28, 1989Glazier Stephen CNon-reusable syringe
US4890626 *Jul 18, 1988Jan 2, 1990Wang Ko PRemovable locking device for use with syringes
US4993948 *Oct 30, 1989Feb 19, 1991Cameron Frederick JApplicator for dental material
US5084019 *Feb 19, 1991Jan 28, 1992Owen J. MeeganHypodermic syringe with means to destroy and safely store the cannula
US5084020 *Nov 30, 1990Jan 28, 1992Owen J. MeeganCannula device with means to provide safe storage after use
US5122117 *Jun 5, 1990Jun 16, 1992Habley Medical Technology Corp.Component mixing syringe
US5215536 *Nov 13, 1991Jun 1, 1993Merit Medical Systems, Inc.Self-locking control syringe
US5217442 *Sep 28, 1990Jun 8, 1993Minimed TechnologiesAspiration and refill kit for a medication infusion pump
US5333608 *Sep 30, 1992Aug 2, 1994Sherwood Medical CompanyEndotracheal tube for face, chin and neck surgery
US5338294 *Jun 19, 1992Aug 16, 1994Jack KaufmanUrological evacuator
US5389080 *Mar 31, 1993Feb 14, 1995Yoon; InbaeEndoscopic portal for use in endoscopic procedures and methods therefor
US5395342 *Jul 26, 1990Mar 7, 1995Yoon; InbaeEndoscopic portal
US5429609 *Mar 31, 1994Jul 4, 1995Yoon; InbaeEndoscopic portal for use in endoscopic procedures and methods therefor
US5441486 *Nov 9, 1994Aug 15, 1995Yoon; InbaeEndoscopic portal for use in endoscopic procedures and methods therefor
US5476106 *Feb 28, 1991Dec 19, 1995Owen J. MeeganMethod of destroying and storing used cannulas
US5478318 *Aug 2, 1994Dec 26, 1995Yoon; InbaeMultiluminal endoscopic portal
US5485853 *Apr 28, 1994Jan 23, 1996Stubbs; GeorgeApparatus for withdrawing fluid or tissue from a patient's body
US5556384 *Apr 17, 1995Sep 17, 1996Da Encarnac+E,Otl A+Ee O; Fernando A. F.Self-destructive hypodermic syringe
US5803918 *Apr 2, 1997Sep 8, 1998Becton Dickinson And CompanySyringe for medicinal purposes
US6083203 *Jan 6, 1995Jul 4, 2000Yoon; InbaeEndoscopic portal
US6126043 *Sep 24, 1999Oct 3, 2000Albert, Ii; William D.Reusable portable pressurized fluid container
US7361162 *Nov 10, 2003Apr 22, 2008Schott AgMedicinal syringe with piston stopper withdrawal and rotation-limiting means
US7641640 *Mar 14, 2007Jan 5, 2010IpasMedical vacuum aspiration device
US7763036 *Mar 31, 2006Jul 27, 2010Ethicon Endo-Surgery, Inc.Endoscopic instrument with secondary vacuum source
US8075533May 2, 2005Dec 13, 2011Preventiv, Inc.Autoflush syringe
US8075547 *Jul 22, 2009Dec 13, 2011Preventiv, Inc.Autoflush syringe method
US8287491Nov 25, 2009Oct 16, 2012Becton, Dickinson And CompanySingle-use auto-disable syringe
US8529517Jul 9, 2010Sep 10, 2013Shi Zi Technology, Ltd.Autoflush syringe
US8936577Jan 23, 2012Jan 20, 2015Shi Zi Technology, Ltd.Methods and devices for autoflush syringes
US8939959Jun 20, 2013Jan 27, 2015Becton, Dickinson And CompanyDose dividing delivery device
US20040260248 *Nov 10, 2003Dec 23, 2004Horst KollerMedicinal syringe with piston stopper withdrawal and rotation-limiting means
CN100435870CNov 11, 2003Nov 26, 2008肖特股份有限公司Medical syringe
CN101044972BApr 2, 2007Jul 20, 2011伊西康内外科公司Endoscopic instrument with secondary vacuum source
DE3016772A1 *Apr 30, 1980Nov 27, 1980Trans Med CorpDiagnostischer probensammler, insbesondere spritzenartige vorrichtung und abgabevorrichtung, sowie dafuer vorgesehener kolben
DE4331137A1 *Sep 14, 1993Nov 10, 1994Becton Dickinson CoSpritze für medizinische Zwecke
DE10252220B3 *Nov 11, 2002May 13, 2004Schott GlasMedizinische Spritze
EP0191945A2 *Dec 21, 1985Aug 27, 1986KABE Labortechnik Gesellschaft mit beschränkter HaftungBlood-sampling device
EP1358899A2 *May 2, 2003Nov 5, 2003CARL-ZEISS-STIFTUNG trading as SCHOTT GLASPre-filled single-use syringe
EP1417981A1 *Oct 21, 2003May 12, 2004Carl-Zeiss-Stiftung trading as SCHOTT GLASWERKEMedical Syringe
WO1985005023A1 *May 4, 1985Nov 21, 1985Uwe W BalliesClosure for a small tube used for blood sampling
WO1986004819A1 *Feb 20, 1986Aug 28, 1986Alain DubosSuction device, particularly for venom sucking cup, comprising a vacuum pump connectable to an external chamber
WO1987005198A1 *Mar 4, 1987Sep 11, 1987Uwe BalliesBlood sampling device
WO2015045180A1 *Sep 30, 2013Apr 2, 2015TcfTc¿TcsTc|Tb®Tc¡Tc»Tb¿Tc¿Tb§TcpTczTbuWµ¡V¯±U¯ªXu´Medical aspiration tool
Classifications
U.S. Classification222/387, 604/220, 604/110, 604/236
International ClassificationA61M5/31, A61M5/315, A61B5/15
Cooperative ClassificationA61B5/150099, A61B5/150389, A61B5/15003, A61B5/150503, A61B5/150946, A61B5/150236, A61B5/154, A61M2005/3128, A61B5/150396, A61B5/150259, A61B5/1405, A61B5/150244, A61M5/3134, A61B5/150221, A61B5/153, A61M5/31505, A61B5/150213
European ClassificationA61B5/15B18B10, A61B5/15B8J, A61B5/15B38, A61B5/15B8H, A61B5/15B2D, A61B5/15B18B2, A61B5/15B8D, A61B5/153, A61B5/15B8B, A61M5/31C2, A61B5/14B