CA1122493A - Catheter and method of manufacture - Google Patents
Catheter and method of manufactureInfo
- Publication number
- CA1122493A CA1122493A CA301,667A CA301667A CA1122493A CA 1122493 A CA1122493 A CA 1122493A CA 301667 A CA301667 A CA 301667A CA 1122493 A CA1122493 A CA 1122493A
- Authority
- CA
- Canada
- Prior art keywords
- balloon
- end portion
- sleeve
- shaft
- groove
- 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
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/1027—Making of balloon catheters
- A61M25/1034—Joining of shaft and balloon
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1065—Balloon catheters with special features or adapted for special applications having a balloon which is inversely attached to the shaft at the distal or proximal end
Abstract
CATHETER AND METHOD OF MANUFACTURE
ABSTRACT OF THE DISCLOSURE
A catheter having a flexible annular balloon secured on a shaft of the catheter by a pair of annular sleeves. A method }s provided for securing the balloon to the shaft by shrinking the sleeves over grooves of the shaft.
ABSTRACT OF THE DISCLOSURE
A catheter having a flexible annular balloon secured on a shaft of the catheter by a pair of annular sleeves. A method }s provided for securing the balloon to the shaft by shrinking the sleeves over grooves of the shaft.
Description
SUMMARY OF THE INVENTION `
The present invention relates to cathet~rs and methods for fabricating such catheters.
A ~arious assortment of catheters has been proposed f~r use on patients, such as endotracheal tubes and Foley catheters, in which the catheters have an inflatable balloon secured onto the catheter shafts. During use of the endotracheal tubes, the inflated balloons seal and retain the catheter in the patient's trachea, while the balloons of Foley or urinary catheters are inflated in the patientls bladder in order to retain the cathe-ters in place.
The catheter balloons are made from a flexible material which is normally elastic, while the catheter shafts are prefer-ably made from a more rigid material to permit easy placemen~
and provide greater structural integrity of the shafts during use. Accordingly, in many cases it has become desirable to make the balloons and shafts from different materials, such as a sili-cone balloon for a non-silicone shaft, in order to achieve the desired characteristics required by the catheter balloons and shafts. In practice this has proven difficult to accomplish, since many of the dissimilar materials are not susceptihle to con-ventional bonding techniques. Thus, the different materials fre-quently prove incompatible when attempts are made to attach the balloon to the shaft throu~h use of heat sealing or known adhe-sives, and :Erequently a satisfackory bond cannot be obtainedbetween the balloon and shaf~ in a conventional manner.
SU~IARY OF THE INVENTION
A principal feature of the present invention is the provision of an improved catheter and a method of fabricating the catheter in a simplified manner.
, .
~...~
:
According to a method of the present invention a 1ex-ible annular balloon i5 secured on a shaft of the catheter by forming a pair of spaced annular grooves in an outer surface of the shaft, positioning a first end portion of the balloon intermediate a first shrinkable annular sleeve and one of the groovesl and shrinking the first sleeve to secure the first end portion of the balloon in the one groove. ~rhe remote end portion of the balloon is positioned intermediate a second shrinkable annular sleeve and the other of the grooves, and the second sleeve is shrunk to secure the remote end portion of the balloon in the other groove.
Thus, a feature of the present invention is that the balloon is attached to the shaft by shrinking the sleeves while securing end portions of the balloon in the grooves of the shaft.
Another feature of the present invention is that the ; ~
balloon is secured on the shaft in a simplified manner.
Yet another feature of the invention is that the bal-loon may be secured to the shaft while obtaining an excellent bond ~etween the balloon and shaft without the necessity of adhe-sives or sealing.
Still another feature of the invention is that the balloon may be readily secured to the shaft in spite that the balloon and shaft may be made from dissimilar materials which other~ise could not be bonded in a suitable manner.
~ further feature of the invention is the provision of a catheter having a balloon secured to the catheter shaft in accordance with a method of the present invention.
Further features will become more fully apparent in the following description of the embodiments of this invention and from the appended claims.
~2~
DESCRIPTION OF THE ~RAWINGS
In the drawings:
Fig. 1 is a fragmentary elevational view of a cathe-ter of the present invention;
Fig. 2 is a fragmentary sectional view of an elongated shaft of the catheter of Fig. l;
Fig. 3 is a perspective view of an annular sleeve utilized to secure an end portion of a balloon to the catheter shaft;
Figs. 4-6 are fragmentary elevational views, taken partly in section, illustrating steps during securement of the balloon to the catheter shaft, and Fig. 7 is a fragmentary sectional ~iew of the catheter illustrating the balloon as secured to the shaft accord:ing to a method of the present invention.
DESCRIPTION OF T~IE PREFERRED EMBODIMENTS
Referring now to Fig. 1, there is shown a catheter gen-~ erally designated 10 having an elongated shaft 12~ an opening 14 ; adjacent a distal end 16 of the shaft 12, and a balloon 18 of flexible material, such as silicone, secured to the shaft 12 in accordance with a method of the present invention. Although for convenience the catheter 10 is illustra-ted in the form of an endotracheal tube, it will be apparent that the principles of the present invention are e~ually applicable to other catheters, such as Foley or urinary catheters.
With reference to Fig. 2, the catheter shaft 12 has a main lumen 20 extending through the shaft and communicating with the opening 14 at the distal end 16 of the shaft 12. Also, the shaft ]2 has an inflation lumen 22 in a wall 24 of the shaft 12 which communicates with an outer surface 26 of the shaft 12 ~L~Z'~3 through an aperture 28 in the wall 24. As shown, an outer end 30 of the inflation lumen 22 is blocked by a suitable plug 32, and the catheter 10 may have a tube or side arm 34 connected to the shaft 12 and defining an extension of the inflation lumen 22, such that fluid may be passed through the tube 34 and inflation lumen 22 to control inElation and deflation of the balloon le when secured to the shaft. The shaft 12 also has a pair of spaced first and second annular grooves 36 and 38 defining recesses in the outer surface 26 of the catheter shaft 12.
With reference to E'ig. 3, the securing means comprises an annular sleeve 40 of shrinkable material having a bore 42 extending through a wall 44 of the sleeve 40. As will be seen below, first and second sleeves of similar structure are utilized to secure the balloon onto the catheter shaft, and for conveni-ence the first and second sleeves ~ill be designated by the ref-erence numerals 40a and 40b during the following description.
The sleeves 40a and b may be made of any suitable thermosetting or thermoplastic heat shrinkable material, such as polyethylene or polyvinyl chloride, in order that the sleeves shrink to a reduced size responsive to heating.
With reference to Fig. 4, the balloon 18 comprises an elongated annular sleeve of flexible material having a first end portion 46 deEining a first end edge 48 of the balloon 18, and a ; second opposed end portion 50 defining a second end edge 52 of the balloon 18. As shown, prior to shrinking,the first sleeve 40a has an internal diameter greater than the outer diameter of the catheter shaft 12, and, in accordance with a method of ~he present invention, the first sleeve 40a is positioned over the location of the first groove 36 of the shaft. The first end por-tion 46 of the balloon 18 is positioned intermediate the first
The present invention relates to cathet~rs and methods for fabricating such catheters.
A ~arious assortment of catheters has been proposed f~r use on patients, such as endotracheal tubes and Foley catheters, in which the catheters have an inflatable balloon secured onto the catheter shafts. During use of the endotracheal tubes, the inflated balloons seal and retain the catheter in the patient's trachea, while the balloons of Foley or urinary catheters are inflated in the patientls bladder in order to retain the cathe-ters in place.
The catheter balloons are made from a flexible material which is normally elastic, while the catheter shafts are prefer-ably made from a more rigid material to permit easy placemen~
and provide greater structural integrity of the shafts during use. Accordingly, in many cases it has become desirable to make the balloons and shafts from different materials, such as a sili-cone balloon for a non-silicone shaft, in order to achieve the desired characteristics required by the catheter balloons and shafts. In practice this has proven difficult to accomplish, since many of the dissimilar materials are not susceptihle to con-ventional bonding techniques. Thus, the different materials fre-quently prove incompatible when attempts are made to attach the balloon to the shaft throu~h use of heat sealing or known adhe-sives, and :Erequently a satisfackory bond cannot be obtainedbetween the balloon and shaf~ in a conventional manner.
SU~IARY OF THE INVENTION
A principal feature of the present invention is the provision of an improved catheter and a method of fabricating the catheter in a simplified manner.
, .
~...~
:
According to a method of the present invention a 1ex-ible annular balloon i5 secured on a shaft of the catheter by forming a pair of spaced annular grooves in an outer surface of the shaft, positioning a first end portion of the balloon intermediate a first shrinkable annular sleeve and one of the groovesl and shrinking the first sleeve to secure the first end portion of the balloon in the one groove. ~rhe remote end portion of the balloon is positioned intermediate a second shrinkable annular sleeve and the other of the grooves, and the second sleeve is shrunk to secure the remote end portion of the balloon in the other groove.
Thus, a feature of the present invention is that the balloon is attached to the shaft by shrinking the sleeves while securing end portions of the balloon in the grooves of the shaft.
Another feature of the present invention is that the ; ~
balloon is secured on the shaft in a simplified manner.
Yet another feature of the invention is that the bal-loon may be secured to the shaft while obtaining an excellent bond ~etween the balloon and shaft without the necessity of adhe-sives or sealing.
Still another feature of the invention is that the balloon may be readily secured to the shaft in spite that the balloon and shaft may be made from dissimilar materials which other~ise could not be bonded in a suitable manner.
~ further feature of the invention is the provision of a catheter having a balloon secured to the catheter shaft in accordance with a method of the present invention.
Further features will become more fully apparent in the following description of the embodiments of this invention and from the appended claims.
~2~
DESCRIPTION OF THE ~RAWINGS
In the drawings:
Fig. 1 is a fragmentary elevational view of a cathe-ter of the present invention;
Fig. 2 is a fragmentary sectional view of an elongated shaft of the catheter of Fig. l;
Fig. 3 is a perspective view of an annular sleeve utilized to secure an end portion of a balloon to the catheter shaft;
Figs. 4-6 are fragmentary elevational views, taken partly in section, illustrating steps during securement of the balloon to the catheter shaft, and Fig. 7 is a fragmentary sectional ~iew of the catheter illustrating the balloon as secured to the shaft accord:ing to a method of the present invention.
DESCRIPTION OF T~IE PREFERRED EMBODIMENTS
Referring now to Fig. 1, there is shown a catheter gen-~ erally designated 10 having an elongated shaft 12~ an opening 14 ; adjacent a distal end 16 of the shaft 12, and a balloon 18 of flexible material, such as silicone, secured to the shaft 12 in accordance with a method of the present invention. Although for convenience the catheter 10 is illustra-ted in the form of an endotracheal tube, it will be apparent that the principles of the present invention are e~ually applicable to other catheters, such as Foley or urinary catheters.
With reference to Fig. 2, the catheter shaft 12 has a main lumen 20 extending through the shaft and communicating with the opening 14 at the distal end 16 of the shaft 12. Also, the shaft ]2 has an inflation lumen 22 in a wall 24 of the shaft 12 which communicates with an outer surface 26 of the shaft 12 ~L~Z'~3 through an aperture 28 in the wall 24. As shown, an outer end 30 of the inflation lumen 22 is blocked by a suitable plug 32, and the catheter 10 may have a tube or side arm 34 connected to the shaft 12 and defining an extension of the inflation lumen 22, such that fluid may be passed through the tube 34 and inflation lumen 22 to control inElation and deflation of the balloon le when secured to the shaft. The shaft 12 also has a pair of spaced first and second annular grooves 36 and 38 defining recesses in the outer surface 26 of the catheter shaft 12.
With reference to E'ig. 3, the securing means comprises an annular sleeve 40 of shrinkable material having a bore 42 extending through a wall 44 of the sleeve 40. As will be seen below, first and second sleeves of similar structure are utilized to secure the balloon onto the catheter shaft, and for conveni-ence the first and second sleeves ~ill be designated by the ref-erence numerals 40a and 40b during the following description.
The sleeves 40a and b may be made of any suitable thermosetting or thermoplastic heat shrinkable material, such as polyethylene or polyvinyl chloride, in order that the sleeves shrink to a reduced size responsive to heating.
With reference to Fig. 4, the balloon 18 comprises an elongated annular sleeve of flexible material having a first end portion 46 deEining a first end edge 48 of the balloon 18, and a ; second opposed end portion 50 defining a second end edge 52 of the balloon 18. As shown, prior to shrinking,the first sleeve 40a has an internal diameter greater than the outer diameter of the catheter shaft 12, and, in accordance with a method of ~he present invention, the first sleeve 40a is positioned over the location of the first groove 36 of the shaft. The first end por-tion 46 of the balloon 18 is positioned intermediate the first
2~93 sleeve 40a and the first groove 36 wlth the first end edye ~8 ofthe balloon 18 being directed toward the second groove 38, as ` shown.
Next, with reference to Fig. 5, the first sleeve 40a is subjected to a shrinking procedure, such as heat shrinkiny, -~ such that the dimensions of the first sleeve 40a are signifi~
cantly reduced and the first sleeve 4Oa snugly engages the first end portion 46 of the balloon 18 in the first groove 36. In this manner, the first end portion 46 of the b~lloon 18 is secured in the annular first groove 36 of the catheter shaft 12 by the shrunk sleeve 40a without the use of adhesi~es o~ heat sealing.
The remaining portion of the balloon 18 i5 then ~olded over the outer surface of the first sleeve 40a. As illustrated ~ 15 in Fig. 6, the enlarged second shrinkable sleeve 40b is posi~
tioned over the second groove 38, and the remote second end por-~ tion 50 of the balloon 18 is folded to a location intermediate -~ the second sleeve 40b and second groove 83 with the second end edge 52 of the balloon being directed toward the first groove 36.
The second sleeve 40b is then subiected to a shrinking treatment, such as heat shrinking, in order to reduce the dimensions of the second sleeve 40b, as shown in Fig. 7. As shown, the shrunk second sleeve 4Ob snugly engages against the second end portion 50 of the balloon 18 and secures the second end portion SO of the balloon 18 in place intermediate the second sleeve 40b and the second groove 38.
Thus, the end portions 46 and 50 of the flexible balloon 18 are secured beneath the respective sleeves 40a and 40~ in a simplified manner without the use of adhesives or sealing tech-niques. After fabrication, the first end edge 48 of the first Z4~;~
balloon end portion 46 is directed toward the second groove 38 while the second end edge 52 of the second balloon end portion 50 is directed toward the first groove 36~ As shown, a central portion 54 of the balloon extends over the outer surface 26 of the catheter shaft 12 with side portions 56a and 56b overlying outer surfaces of the respective shrunk first and second sleeves 4Oa and b. With reference to Figs. 1 and 7, the balloon may be inflated at the time of use by passage of fluid through the tube 34, through the inflation lumen 22, and the wall aperture 28 into a cavity 58 defined intermediate the central portion 54 of the balloon 18 and the outer surface 26 of the catheter shaft 12.
The balloon 18 may be deflated by reverse passag~ of fluid from the cavity 58 through the inflation lumen 22 and the tube 34.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should be understood therefrom, as modifications will be obvious to those skilled in the art.
, /
Next, with reference to Fig. 5, the first sleeve 40a is subjected to a shrinking procedure, such as heat shrinkiny, -~ such that the dimensions of the first sleeve 40a are signifi~
cantly reduced and the first sleeve 4Oa snugly engages the first end portion 46 of the balloon 18 in the first groove 36. In this manner, the first end portion 46 of the b~lloon 18 is secured in the annular first groove 36 of the catheter shaft 12 by the shrunk sleeve 40a without the use of adhesi~es o~ heat sealing.
The remaining portion of the balloon 18 i5 then ~olded over the outer surface of the first sleeve 40a. As illustrated ~ 15 in Fig. 6, the enlarged second shrinkable sleeve 40b is posi~
tioned over the second groove 38, and the remote second end por-~ tion 50 of the balloon 18 is folded to a location intermediate -~ the second sleeve 40b and second groove 83 with the second end edge 52 of the balloon being directed toward the first groove 36.
The second sleeve 40b is then subiected to a shrinking treatment, such as heat shrinking, in order to reduce the dimensions of the second sleeve 40b, as shown in Fig. 7. As shown, the shrunk second sleeve 4Ob snugly engages against the second end portion 50 of the balloon 18 and secures the second end portion SO of the balloon 18 in place intermediate the second sleeve 40b and the second groove 38.
Thus, the end portions 46 and 50 of the flexible balloon 18 are secured beneath the respective sleeves 40a and 40~ in a simplified manner without the use of adhesives or sealing tech-niques. After fabrication, the first end edge 48 of the first Z4~;~
balloon end portion 46 is directed toward the second groove 38 while the second end edge 52 of the second balloon end portion 50 is directed toward the first groove 36~ As shown, a central portion 54 of the balloon extends over the outer surface 26 of the catheter shaft 12 with side portions 56a and 56b overlying outer surfaces of the respective shrunk first and second sleeves 4Oa and b. With reference to Figs. 1 and 7, the balloon may be inflated at the time of use by passage of fluid through the tube 34, through the inflation lumen 22, and the wall aperture 28 into a cavity 58 defined intermediate the central portion 54 of the balloon 18 and the outer surface 26 of the catheter shaft 12.
The balloon 18 may be deflated by reverse passag~ of fluid from the cavity 58 through the inflation lumen 22 and the tube 34.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should be understood therefrom, as modifications will be obvious to those skilled in the art.
, /
Claims (6)
1. A method of securing a flexible annular balloon on a catheter shaft, comprising the steps of:
forming a pair of spaced annular grooves in an outer surface of the shaft;
positioning a first end portion of the balloon intermediate a first shrinkable annular sleeve and one of said grooves;
shrinking said first sleeve to secure said first end portion of the balloon in said one groove;
positioning the remote end portion of the balloon intermediate a second shrinkable annular sleeve and the other of said grooves; and shrinking said second sleeve to secure said remote end portion of the balloon in said other groove.
forming a pair of spaced annular grooves in an outer surface of the shaft;
positioning a first end portion of the balloon intermediate a first shrinkable annular sleeve and one of said grooves;
shrinking said first sleeve to secure said first end portion of the balloon in said one groove;
positioning the remote end portion of the balloon intermediate a second shrinkable annular sleeve and the other of said grooves; and shrinking said second sleeve to secure said remote end portion of the balloon in said other groove.
2. The method of claim 1 wherein said first position-ing step comprises the step of placing said first end portion of the balloon in a configuration with an end edge of the first end portion directed toward the other of said grooves.
3. The method of claim 2 wherein the second position-ing step comprises the step of placing said remote end portion of the balloon in a configuration with an end edge of the remote end portion directed toward said one groove.
4. The method of claim 1 wherein said first and second sleeves are made from a heat shrinkable material, and the first and second shrinking steps comprise the steps of heat shrinking said first and second sleeves.
5. The method of claim 1 including the step of fold-ing a remaining portion of said balloon over said first sleeve after the first shrinking step.
6. A catheter, comprising:
an elongated shaft having a pair of first and sec-ond spaced annular grooves in an outer surface of the shaft;
an inflatable balloon comprising an elongated sleeve of flexible material having first and second end edges adjacent opposed first and second end portions of the balloon;
and a pair of first and second relatively rigid annu-lar retaining sleeves, said first end portion of the balloon being snugly received intermediate the first retaining sleeve and the first groove with said first end edge of the balloon being directed toward said second groove, and said second end portion of the balloon being snugly received intermediate the second retaining sleeve and the second groove with said second end edge being directed toward the first groove, with intermedi-ate side portions of the retained balloon overlying outer sur-faces of the retaining sleeves prior to inflation of the balloon, said retaining sleeves each being of one-piece construction cir-cumferentially and across the width of the sleeves, and said sleeves being shrunk into the retaining configuration in a rela-tively rigid and inelastic condition with an internal diameter less than the outer diameter of the shaft.
an elongated shaft having a pair of first and sec-ond spaced annular grooves in an outer surface of the shaft;
an inflatable balloon comprising an elongated sleeve of flexible material having first and second end edges adjacent opposed first and second end portions of the balloon;
and a pair of first and second relatively rigid annu-lar retaining sleeves, said first end portion of the balloon being snugly received intermediate the first retaining sleeve and the first groove with said first end edge of the balloon being directed toward said second groove, and said second end portion of the balloon being snugly received intermediate the second retaining sleeve and the second groove with said second end edge being directed toward the first groove, with intermedi-ate side portions of the retained balloon overlying outer sur-faces of the retaining sleeves prior to inflation of the balloon, said retaining sleeves each being of one-piece construction cir-cumferentially and across the width of the sleeves, and said sleeves being shrunk into the retaining configuration in a rela-tively rigid and inelastic condition with an internal diameter less than the outer diameter of the shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/792,823 US4147169A (en) | 1977-05-02 | 1977-05-02 | Balloon catheter with balloon retaining sleeves |
| US792,823 | 1991-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1122493A true CA1122493A (en) | 1982-04-27 |
Family
ID=25158174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA301,667A Expired CA1122493A (en) | 1977-05-02 | 1978-04-21 | Catheter and method of manufacture |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4147169A (en) |
| CA (1) | CA1122493A (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307722A (en) * | 1979-08-14 | 1981-12-29 | Evans Joseph M | Dilators for arterial dilation |
| US4386179A (en) * | 1980-05-07 | 1983-05-31 | Medical Research Associates, Ltd. | Hydrocarbon block copolymer with dispersed polysiloxane |
| US4511354A (en) * | 1980-05-07 | 1985-04-16 | Medical Research Associates, Ltd. | Hydrocarbon block copolymer with dispersed polysiloxane |
| US4328806A (en) * | 1980-06-18 | 1982-05-11 | American Hospital Supply Corporation | Catheter with trans-luminal gas pathway |
| US4850348A (en) * | 1985-01-23 | 1989-07-25 | Pell Donald M | Endotracheal tube apparatus and method |
| US5137512A (en) * | 1989-03-17 | 1992-08-11 | Scimed Life Systems, Inc. | Multisegment balloon protector for dilatation catheter |
| USRE42625E1 (en) | 1990-03-13 | 2011-08-16 | The Regents Of The University Of California | Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas |
| US6083220A (en) | 1990-03-13 | 2000-07-04 | The Regents Of The University Of California | Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas |
| USRE42756E1 (en) | 1990-03-13 | 2011-09-27 | The Regents Of The University Of California | Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas |
| GB9708568D0 (en) * | 1997-04-29 | 1997-06-18 | Smiths Industries Ltd | Cuffed medico-surgical tubes |
| US6533799B1 (en) * | 1999-04-27 | 2003-03-18 | Ams Research Corporation | Cavity measurement device and method of assembly |
| US6994687B1 (en) | 2000-01-19 | 2006-02-07 | Cordis Neurovascular, Inc. | Inflatable balloon catheter with purge mechanism and method |
| US6723113B1 (en) * | 2000-01-19 | 2004-04-20 | Cordis Neurovascular, Inc. | Inflatable balloon catheter seal and method |
| EP1272113B1 (en) * | 2000-04-07 | 2012-03-21 | Kyphon SÀRL | Insertion devices |
| US20040106901A1 (en) * | 2002-11-30 | 2004-06-03 | Letson William W. | Catheter having a balloon member invertedly attached thereto |
| JP3877075B2 (en) | 2004-01-28 | 2007-02-07 | 有限会社エスアールジェイ | Endoscope device |
| US11883029B2 (en) | 2005-01-20 | 2024-01-30 | Pulmonx Corporation | Methods and devices for passive residual lung volume reduction and functional lung volume expansion |
| US8496006B2 (en) * | 2005-01-20 | 2013-07-30 | Pulmonx Corporation | Methods and devices for passive residual lung volume reduction and functional lung volume expansion |
| US20080228137A1 (en) | 2007-03-12 | 2008-09-18 | Pulmonx | Methods and devices for passive residual lung volume reduction and functional lung volume expansion |
| US20100106051A1 (en) * | 2008-10-24 | 2010-04-29 | Innerspace, Inc. | Single lumen catheter with separate tubes therein |
| JP5566171B2 (en) * | 2009-08-25 | 2014-08-06 | 雅之 山田 | Cuffed tube |
| US20120165732A1 (en) * | 2010-12-23 | 2012-06-28 | Synthes Usa, Llc | Balloon catheter comprising a zero-profile tip |
| US9533125B2 (en) | 2013-10-01 | 2017-01-03 | Boston Scientific Scimed, Inc. | Balloon catheter and method of manufacture |
| DE202015101546U1 (en) * | 2015-03-26 | 2015-04-23 | Gunter Hemmel | Device for stopping bleeding |
| CN108235687B (en) * | 2016-10-04 | 2021-03-02 | 朝日英达科株式会社 | Catheter and balloon catheter |
| US20220031342A1 (en) * | 2020-07-29 | 2022-02-03 | Neuravi Limited | Balloon Guide Catheter Having Reduced Outer Diameter Distal and Proximal Bonding Interface Areas With the Balloon |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US669910A (en) * | 1900-03-16 | 1901-03-12 | Joseph Parker Ball | Irrigating vaginal syringe. |
| US1598283A (en) * | 1925-04-27 | 1926-08-31 | Justus R Kinney | Draining device |
| US2930377A (en) * | 1958-06-02 | 1960-03-29 | Baxter Don Inc | Surgical tube |
| US3634924A (en) * | 1970-04-20 | 1972-01-18 | American Hospital Supply Corp | Method of making multilumen balloon catheter |
| US3896816A (en) * | 1971-05-03 | 1975-07-29 | Martin Mattler | Disposable catheter |
-
1977
- 1977-05-02 US US05/792,823 patent/US4147169A/en not_active Expired - Lifetime
-
1978
- 1978-04-21 CA CA301,667A patent/CA1122493A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4147169A (en) | 1979-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |