EP0249456A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Variable diameter catheter
Assignee: GENUS CATHETER TECHNOLOGIES Inc
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Filing: 1987-06-10
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Granted: —
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Expires: 2007-06-10
Abstract
Abstract The present invention provides a variable diameter catheter (10) which is folded in a longitudinal manner in order to reduce the diameter for convenient and less traumatic insertion into a body orifice. The fold in the catheter is maintained by a slidably removable external sheath (60) which aids in insertion of the catheter and in dispersion of an anti-infective medication. Once the catheter is placed in the body orifice, the external sheath is removed. The present invention is also directed to the external sheath.
Inventors
- 👤 Clark R. Fuqua
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 20:11
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1038; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0032; A61M25/0067; A61M25/0074; A61M25/01; A61M25/06; A61M25/0662; A61M25/0668; A61M2025/0024; A61M2025/0025
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
84 words
A variable diameter catheter adapted to be folded in a longitudinal manner, characterised in that it comprises a resiliently flexible tube (14) of generally uniform diameter along the length of said tube, said tube in cross-section having a single, external wall of varying thickness, such that the portion of said wall which is adapted to fold is thinner than the rest of said wall; said catheter comprising a means (60) for retaining said fold in said tube, said fold retaining means surrounding said tube.
Claim 2
Dependent Claim
84 words
A variable diameter catheter adapted to be folded in a longitudinal manner, characterised in that it comprises a resiliently flexible tube (14) of generally uniform diameter along the length of said tube, said tube in cross-section having a single, external wall of varying thickness, such that the portion of said wall which is adapted to fold is thinner than the rest of said wall; said catheter comprising a means (60) for retaining said fold in said tube, said fold retaining means surrounding said tube.
Claim 3
Dependent Claim
45 words
A catheter as claimed in claim 1, characterised in that said tube includes a drainage lumen (35) and an inflation lumen (36) independent thereof, and an inflatable diaphragm (38) disposed adjacent a distal end of said tube (14), and connected to said inflation lumen (36).
Claim 4
Dependent Claim
44 words
A catheter as claimed in either claim 1 or claim 2, characterised in that said fold retaining means (60) is a sheath including a tubular wall slidably and removably placed on said catheter tube (14) when said catheter tube is in a folded state.
Claim 5
Dependent Claim
14 words
A catheter as claimed in claim 3, characterised in that said sheath is flexible.
Claim 6
Dependent Claim
44 words
A catheter as claimed in either claim 3 or claim 4, characterised in that said tubular wall includes a line of perforations longitudinally placed on said wall, and said tubular wall is adapted to separate on its longitudinal axis at said line of perforations.
Claim 7
Dependent Claim
26 words
A catheter as claimed in any one of claims 3 to 5, characterised in that said sheath comprises silicone, TEFLON (Reg. TM), latex or natural rubber.
Claim 8
Dependent Claim
26 words
A catheter as claimed in any one of claims 3 to 6, characterised in that said sheath has a doxemeter rating of at least about 60.
Claim 9
Dependent Claim
26 words
A catheter as claimed in any one of claims 2 to 7, characterised in that said fold retaining means (60) further surrounds said inflatable diaphragm (38).
Claim 10
Dependent Claim
55 words
In combination with a catheter having an external wall, a protective removable sheath for said catheter characterised in that it comprises a flexible tubular wall (60) which completely surrounds said catheter external wall during placement of said catheter in a body orifice and in that said sheath is removed after said catheter is in placement.
Claim 11
Dependent Claim
55 words
In combination with a catheter having an external wall, a protective removable sheath for said catheter characterised in that it comprises a flexible tubular wall (60) which completely surrounds said catheter external wall during placement of said catheter in a body orifice and in that said sheath is removed after said catheter is in placement.
Claim 12
Dependent Claim
33 words
A sheath as claimed in claim 9, characterised in that it further comprises a layer of anti-infection medicine between said sheath and said catheter, said medicine being released following removal of said sheath.
Claim 13
Independent Claim
158 words
A method for inserting a catheter tube into a body orifice characterised in that it comprises the steps of folding said catheter tube along its longitudinal length, wherein the diameter of said folded catheter tube is substantially smaller than the diameter of said catheter tube in unfolded state, said tube being provided with a memory of a normal distended configuration, said catheter tube including a proximal end, a distal end, and an inflatable diaphragm disposed adjacent said distal end, said folding being conducted and held by an external fold retaining means having a line of perforations along its longitudinal length and being placed over said inflatable diaphragm such that inflation of said inflatable diaphragm may cause said perforations at said distal end of said catheter tube to separate; inserting said folded catheter tube into said body orifice; and slidably removing said external fold retaining means from said folded catheter tube thus causing said folded catheter tube to unfold.
Claim 14
Independent Claim
158 words
A method for inserting a catheter tube into a body orifice characterised in that it comprises the steps of folding said catheter tube along its longitudinal length, wherein the diameter of said folded catheter tube is substantially smaller than the diameter of said catheter tube in unfolded state, said tube being provided with a memory of a normal distended configuration, said catheter tube including a proximal end, a distal end, and an inflatable diaphragm disposed adjacent said distal end, said folding being conducted and held by an external fold retaining means having a line of perforations along its longitudinal length and being placed over said inflatable diaphragm such that inflation of said inflatable diaphragm may cause said perforations at said distal end of said catheter tube to separate; inserting said folded catheter tube into said body orifice; and slidably removing said external fold retaining means from said folded catheter tube thus causing said folded catheter tube to unfold.
References Cited (Backward Citations)
No citation records indexed.
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