EP0322225A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Triple lumen catheter
Assignee: Vas Cath Inc
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Filing: 1988-12-21
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Granted: —
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Expires: 2008-12-21
Abstract
Abstract A multiple lumen catheter and its method of manufacture is described having a flexible elongate body (26) extending about a longitudinal axis and having a distal end (28) with a tapered tip (29), a proximal end (30), an outer wall (46) and a septum (48) extending between spaced points on the outer wall. The outer wall and the septum define extraction (50) and return (52) lumens extending from the proximal end to the tapered tip where the outer wall and the septum converge to close off the lumens. The outer wall also defines respective extraction (44) and return (45) apertures for fluid communication between the lumens and the tube exterior. A portion of the septum defines a third lumen (54) extending along the longitudinal axis of the body from the proximal end to the distal end and terminating at the tip in an aperture. This third lumen is useful to receive a Seldinger wire (21) for insertion and can be used also for intravenous infusion of liquid medicaments.
Inventors
- 👤 Geoffrey S. Martin
- 👤 Michael R. Leblanc
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/001; A61M1/00; A61M1/36; A61M1/3621; A61M1/3653; A61M1/3659; A61M1/3661; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0028; A61M25/003; A61M2025/0031; A61M2025/004; A61M25/0015; A61M25/0029
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
109 words
A catheter comprising a flexible elongate body extending about a longitudinal axis and having a distal end with a tapered tip, and a proximal end, the body defining three lumens extending from the proximal end to respective apertures in the body, two of the lumens having similar shapes in cross-section and terminating in apertures in the side of the body and the third lumen extending centrally along the axis of the body between the other lumens along the length of the body and ending at the tip, the third lumen being smaller in cross-section then the other two lumens and proportioned to slidably receive a Seldinger wire for insertion.
Claim 2
Dependent Claim
109 words
A catheter comprising a flexible elongate body extending about a longitudinal axis and having a distal end with a tapered tip, and a proximal end, the body defining three lumens extending from the proximal end to respective apertures in the body, two of the lumens having similar shapes in cross-section and terminating in apertures in the side of the body and the third lumen extending centrally along the axis of the body between the other lumens along the length of the body and ending at the tip, the third lumen being smaller in cross-section then the other two lumens and proportioned to slidably receive a Seldinger wire for insertion.
Claim 3
Dependent Claim
132 words
A multiple lumen catheter comprising: a flexible elongate body extending about a longitudinal axis and having a distal end with a tapered tip, a proximal end, an outer wall, and a septum extending between spaced points on the outer wall; the outer wall of the body and the septum defining first and second lumens extending from the proximal end to the tapered tip where the outer wall and the septum converge to close off the lumens, the outer wall further defining respective first and second apertures for fluid communication between the first and second lumens and the body exterior; and a portion of the septum defining a third lumen extending axially along the body from the proximal end to the distal end and terminating at the tapered tip in a third aperture.
Claim 4
Dependent Claim
132 words
A multiple lumen catheter comprising: a flexible elongate body extending about a longitudinal axis and having a distal end with a tapered tip, a proximal end, an outer wall, and a septum extending between spaced points on the outer wall; the outer wall of the body and the septum defining first and second lumens extending from the proximal end to the tapered tip where the outer wall and the septum converge to close off the lumens, the outer wall further defining respective first and second apertures for fluid communication between the first and second lumens and the body exterior; and a portion of the septum defining a third lumen extending axially along the body from the proximal end to the distal end and terminating at the tapered tip in a third aperture.
Claim 5
Dependent Claim
17 words
A multiple lumen catheter as claimed in claim 2 in which the flexible elongate body is cylindrical.
Claim 6
Dependent Claim
26 words
A multiple lumen catheter as claimed in claim 3 in which the septum extends between two diametrically opposed points on the outer wall of the body.
Claim 7
Dependent Claim
16 words
A multiple lumen catheter as claimed in claim 2 in which the tapered tip is conical.
Claim 8
Dependent Claim
19 words
A multiple lumen catheter as claimed in claim 2 in which the tapered tip includes a concentration of material.
Claim 9
Dependent Claim
20 words
A multiple lumen catheter as claimed in claim 2 in which the flexible elongate body is formed as an extrusion.
Claim 10
Dependent Claim
20 words
A multiple lumen catheter as claimed in claim 2 in which the flexible elongate body has a smooth external surface.
Claim 11
Dependent Claim
29 words
A multiple lumen catheter as claimed in claim 2 in which the first and second lumens are blocked short of the distal end by inserts affixed in the lumens.
Claim 12
Dependent Claim
38 words
A multiple lumen catheter as claimed in claim 9 in which the inserts combine with the convergence of the outer wall and the septum to fill the spaces between the apertures and the distal end of the catheter.
Claim 13
Dependent Claim
25 words
A multiple lumen catheter as claimed in claim 9 in which the first lumen is blocked further from the distal end than the second lumen.
Claim 14
Dependent Claim
19 words
A multiple lumen catheter as claimed in claim 2 in which the first and second apertures have scaphoid margins.
Claim 15
Dependent Claim
25 words
A multiple lumen catheter as claimed in claim 2 in which the first aperture is located further from the distal end than the second aperture.
Claim 16
Dependent Claim
31 words
A multiple lumen catheter as claimed in claim 2 in which a plurality of first apertures are provided for fluid communication between the first lumen and the exterior of the body.
Claim 17
Dependent Claim
20 words
A multiple lumen catheter as claimed in claim 2 in which the second aperture is located adjacent the tapered tip.
Claim 18
Dependent Claim
31 words
A multiple lumen catheter as claimed in claim 2 in which a plurality of second apertures are provided for fluid communication between the second lumen and the exterior of the body.
Claim 19
Dependent Claim
18 words
A multiple lumen catheter as claimed in claim 2 in which the third aperture has a circular margin.
Claim 20
Dependent Claim
31 words
A multiple lumen catheter as claimed in claim 2 in which the first and second lumens are substantially similar in cross-sectional area and the third lumen has a lesser cross-sectional area.
Claim 21
Dependent Claim
23 words
A multiple lumen catheter as claimed in claim 2 in which the septum has a bulbous middle portion to accomodate the third lumen.
Claim 22
Dependent Claim
26 words
A multiple lumen catheter as claimed in claim 2 in which the septum has planar side portions and the first and second lumens have D-shaped cross-sections.
Claim 23
Dependent Claim
23 words
A multiple lumen catheter as claimed in claim 2 in which the body terminates at its proximal end in a generally trident-shaped connector.
Claim 24
Dependent Claim
32 words
A multiple lumen catheter as claimed in claim 21 in which the proximal ends of the first and second lumens are flared outwardly and terminate in respective first and second circular apertures.
Claim 25
Dependent Claim
30 words
A multiple lumen catheter as claimed in claim 21 in which the proximal ends of the first, second and third lumens are coupled to respective first, second and third tubes.
Claim 26
Independent Claim
178 words
A method of manufacturing a multiple lumen catheter with a conical tapered tip and an end aperture concentric with the main catheter body comprising the steps of: providing a flexible elongate body extending about a longitudinal axis having a distal end, a proximal end, an outer wall, a septum extending between spaced points on the outer wall to define first and second lumens, and a portion of the septum defining a third lumen extending along the longitudinal axis, the lumens extending from the proximal end to the distal end; inserting a straight wire in the third lumen to extend from the distal end of the body; inserting the distal end of the body in a conical tapering mould having a centrally located aperture to receive the wire; softening the distal end of the body in the mould such that the distal end deforms to a conical shape, the outer wall of the body merging with the septum to close the first and second lumens; and forming openings in the outer wall between the inserts and the proximal end.
Claim 27
Independent Claim
178 words
A method of manufacturing a multiple lumen catheter with a conical tapered tip and an end aperture concentric with the main catheter body comprising the steps of: providing a flexible elongate body extending about a longitudinal axis having a distal end, a proximal end, an outer wall, a septum extending between spaced points on the outer wall to define first and second lumens, and a portion of the septum defining a third lumen extending along the longitudinal axis, the lumens extending from the proximal end to the distal end; inserting a straight wire in the third lumen to extend from the distal end of the body; inserting the distal end of the body in a conical tapering mould having a centrally located aperture to receive the wire; softening the distal end of the body in the mould such that the distal end deforms to a conical shape, the outer wall of the body merging with the septum to close the first and second lumens; and forming openings in the outer wall between the inserts and the proximal end.
Claim 28
Dependent Claim
30 words
A method of manufacturing a multiple lumen catheter as claimed in claim 24 in which inserts are affixed in the first and second lumens, axially spaced from the distal end.
References Cited (Backward Citations)
No citation records indexed.
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