Patent CA1049875A successfully refreshed from Google Patents.
CA1049875A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Catheter and method of manufacture
Assignee: International Paper Co
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Filing: 1975-06-03
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Granted: 1979-03-06
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Expires: 1995-06-03
Abstract
Abstract Abstract of the Disclosure Disclosed is a retention catheter of the Foley type and a method for making such a catheter. The method comprises the steps of insert molding a tip onto a catheter shaft with the proximal end of balloon attached thereto and simultaneously insert bonding the distal end of the balloon into the catheter tip.
Inventors
- 👤 Calvin J. Benning
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-23 22:02
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1034; A61M25/1036; B; B29; B29C; B29C45/00; B29C45/14; B29C45/14336; B29K; B29K2083/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
227 words
In a process for manufacturing a retention catheter having a distal end and a proximal end which comprises: a) forming an elastomeric catheter shaft with a balloon sleeve surrounding said shaft and attached thereto and having a drainage lumen extending longitudinally thereof, and an inflation lumen extending longitu-nally for at least a major portion thereof and communicating with the exterior of said shaft through an aperture adjacent the distal end of said shaft, said balloon being attached at its proximal end of the proximal side of said aperture; b) inserting a guide in the drainage lumen of said shaft to support the distal end of said shaft; c) inserting at least a portion of said shaft, including at least a portion of said guide and a distal portion of said balloon sleeve, in a mold; d) injection molding a curable elastomer into a cavity between said mold and said guide so as to abut the distal end of said shaft with said elastomer and so as to mold said elastomer about the distal end of said balloon sleeve; e) curing said elastomer, and removing said catheter and guide from said mold and said guide from said catheter, thereby forming a catheter tip bonded to said shaft and bonded about said balloon; f) providing at least one drainage eye through said tip and communicating with said drainage lumen.
Claim 2
Dependent Claim
227 words
In a process for manufacturing a retention catheter having a distal end and a proximal end which comprises: a) forming an elastomeric catheter shaft with a balloon sleeve surrounding said shaft and attached thereto and having a drainage lumen extending longitudinally thereof, and an inflation lumen extending longitu-nally for at least a major portion thereof and communicating with the exterior of said shaft through an aperture adjacent the distal end of said shaft, said balloon being attached at its proximal end of the proximal side of said aperture; b) inserting a guide in the drainage lumen of said shaft to support the distal end of said shaft; c) inserting at least a portion of said shaft, including at least a portion of said guide and a distal portion of said balloon sleeve, in a mold; d) injection molding a curable elastomer into a cavity between said mold and said guide so as to abut the distal end of said shaft with said elastomer and so as to mold said elastomer about the distal end of said balloon sleeve; e) curing said elastomer, and removing said catheter and guide from said mold and said guide from said catheter, thereby forming a catheter tip bonded to said shaft and bonded about said balloon; f) providing at least one drainage eye through said tip and communicating with said drainage lumen.
Claim 3
Dependent Claim
28 words
The process of claim 1 wherein the tip is molded to both the distal end of said shaft and a portion of the inside surface of said shaft.
Claim 4
Dependent Claim
25 words
The process of claim 1 wherein the tip is molded about the balloon both proximally and distally of the distal end of said catheter shaft.
Claim 5
Dependent Claim
43 words
The process of claim 1 wherein the length of balloon extending distally of the distal end of the catheter shaft is not greater than about the width of the wall of the distal end of the catheter shaft at its narrowest cross section.
Claim 6
Dependent Claim
45 words
The process of claim 1 wherein the length of balloon extending distally of the distal end of the catheter shaft is not less than about one half the width of the wall of the distal end of the catheter shaft at its narrowest cross section.
Claim 7
Dependent Claim
43 words
The process of claim 5 wherein the length of balloon extending distally of the distal end of the catheter shaft is not greater than about the width of the wall of the distal end of the catheter shaft at its narrowest cross section.
Claim 8
Dependent Claim
44 words
The process of claim 1 wherein the width of an annular space defined by the guide and inside wall of the mold is varied at the portion of the mold cavity wherein the elastomer is molded about the distal end of the balloon sleeve.
Claim 9
Dependent Claim
27 words
The process of claim 1 wherein said tip molded in step (d) is hollow and said at least one drainage eye is provided simultaneously with step (d).
Claim 10
Dependent Claim
32 words
The process of claim 1 wherein said tip molded in step (d) is solid and said at least one drainage eye communicating with said drainage lumen is subsequently punched through said tip.
Claim 11
Dependent Claim
16 words
The process of claim 1 wherein said shaft, said tip and said balloon are silicone rubber.
Claim 12
Dependent Claim
17 words
The process of claim 1 wherein said balloon is attached to said catheter shaft by insert molding.
Claim 13
Dependent Claim
146 words
In a urinary retention catheter including an ex-truded shaft with a drainage lumen extending longitudinally thereof and an inflation lumen extending longitudinally for at least a major portion thereof and communicating with the exterior of said shaft through an aperture adjacent the distal end of said shaft, and a balloon attached to the shaft on the proximal side of said aperture, the improvement which comprises a tip insert molded to the distal end of said shaft, said tip containing the distal end of said balloon insert bonded into said tip wherein said balloon bonded into said tip extends distally of the distal end of said shaft at a distance not greater than about the width of the wall of the distal end of said shaft at its narrowest cross section, and further wherein said tip includes at least one drainage eye communicating with said drainage lumen.
Claim 14
Dependent Claim
146 words
In a urinary retention catheter including an ex-truded shaft with a drainage lumen extending longitudinally thereof and an inflation lumen extending longitudinally for at least a major portion thereof and communicating with the exterior of said shaft through an aperture adjacent the distal end of said shaft, and a balloon attached to the shaft on the proximal side of said aperture, the improvement which comprises a tip insert molded to the distal end of said shaft, said tip containing the distal end of said balloon insert bonded into said tip wherein said balloon bonded into said tip extends distally of the distal end of said shaft at a distance not greater than about the width of the wall of the distal end of said shaft at its narrowest cross section, and further wherein said tip includes at least one drainage eye communicating with said drainage lumen.
Claim 15
Dependent Claim
48 words
The catheter of claim 12 wherein the balloon is insert bonded into said tip both on the proximal and distal side of the distal end of said shaft and further wherein on the exterior of said catheter said tip extends proximally of the distal end of said shaft.
Claim 16
Dependent Claim
19 words
The catheter of claim 12 wherein the balloon is insert bonded to the tip in the absence of adhesive.
Claim 17
Dependent Claim
26 words
The catheter of claim 12 wherein the tip is insert molded to both the distal end and a portion of the inside surface of said shaft.
Claim 18
Dependent Claim
46 words
The catheter of claim 12 wherein the length of balloon extending distally of the distal end of the catheter shaft is not less than about one half of the width of the wall of the distal end of the catheter shaft at its narrowest cross section.
Claim 19
Dependent Claim
16 words
The catheter of claim 12 wherein said shaft, said tip and said balloon are silicone rubber.
Claim 20
Dependent Claim
18 words
The catheter of claim 12 wherein the proximal end of said balloon is insert molded onto said catheter.
References Cited (Backward Citations)
No citation records indexed.
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