EP0490459B1
Expired / Lapsed
EP
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Multilumen catheter
Assignee: Kendall Co
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Filing: 1991-12-13
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Granted: 1997-02-19
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Expires: 2011-12-13
Abstract
No abstract record available.
Inventors
- 👤 James R. Gross
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 19:20
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0014; A61M2025/0001; A61M2025/0003; A61M2025/0004; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/0039; A61M25/0067; A61M25/0074; A61M2025/0079; A61M25/01; A61M2025/0175
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
325 words
Multilumen catheter (10) comprising an inner catheter tube (12) defining a first lumen (18) having a proximal end (40) and a distal end (34); a middle catheter tube (14) defining a second lumen (20) having a proximal end (42), a distal end (36) and a cross-section which is greater than the cross-section of said inner tube (12), said middle tube (14) being disposed concentrically and coaxially with said inner tube (12), and said distal end (34) of said inner tube (12) extending longitudinally outward from said distal end (36) of said middle tube (14); an outer catheter tube (16) defining a third lumen (22) and having a proximal end (50), a distal end (38) and a cross-section which is greater than the cross-section of said middle tube (14), said outer tube (16) being disposed concentrically and coaxially with said middle tube (14) and said inner tube (12); a manifold (24) securing and encapsulating each of said proximal ends of said middle and outer tubes (42,50); and a plurality of extension tubes (30,32) coupled to said manifold (24), each separately coupled to the second and third lumen (20,22) respectively, characterized in that said distal end (38) of said outer tube (16) is tapered and abuts said middle tube (14), and said distal end (36) of said middle tube (14) extends longitudinally outward from said distal end of said outer tube (16), wherein said middle tube (14) is tapered and abuts said inner tube (12), wherein said second lumen (20) terminates in a side opening (54) slightly upstream from said tapered distal end (36) of said middle tube (14), and said third lumen (22) terminates in a side opening (56) slightly upstream from said tapered distal end (38) of said outer tube (16), the said manifold (24) also securing and encapsulating the said proximal end (40) of the inner tube (12) wherein the inner lumen (18) is coupled to an extension tube (28) through the manifold (24).
Claim 2
Dependent Claim
314 words
Multilumen catheter (10) comprising an inner catheter tube (12) defining a first lumen (18) having a proximal end (40) and a distal end (34); a middle catheter tube (14) defining a second lumen (20) having a proximal end (42), a distal end (36) and a cross-section which is greater than the cross-section of said inner tube (12), said middle tube (14) being disposed concentrically and coaxially with said inner tube (12), and said distal end (34) of said inner tube (12) extending longitudinally outward from said distal end (36) of said middle tube (14); an outer catheter tube (16) defining a third lumen (22) and having a proximal end (50), a distal end (38) and a cross-section which is greater than the cross-section of said middle tube (14), said outer tube (16) being disposed concentrically and coaxially with said middle tube (14) and said inner tube (12); a manifold (24) securing and encapsulating each of said proximal ends of said middle and outer tubes (42,50); and a plurality of extension tubes (30,32) coupled to said manifold (24), each seperately coupled to the second and third lumen (20,22) respectively, characterized in that said distal end (36) of said middle tube (14) extends longitudinally outward from said distal end (38) of said outer tube (16), and said distal end (36) of said middle tube (14) and said distal end (38) of said outer tube (16) each terminates in a flexible, tapered tip (60,62) which expands under the pressure of fluid flowing in the respective second and third lumen (20,22) and which acts as a check valve to prevent fluid from entering the second and third lumens (20,22) from the respective tips (60,62), the said manifold (24) also securing and encapsulating the said proximal end (40) of the inner tube (12) wherein the inner lumen (18) is coupled to an extension tube (28) through the manifold (24).
Claim 3
Dependent Claim
43 words
Multilumen catheter (10) according to claim 2 wherein said distal end (34) of said inner tube (12) terminates in a flexible, tapered tip (58), which acts as a check valve to prevent fluid from entering the first lumen (18) from said tip (58).
Claim 4
Dependent Claim
26 words
Multilumen catheter (10) according to claim 1 or 2 wherein said extension tubes (28,20,32) are configured for connection to a fluid transfer device or monitoring means.
Claim 5
Dependent Claim
27 words
Multilumen catheter (10) according to claim 4 wherein said manifold (24) includes channels (29,37,39) for separately coupling each of said lumens (18,20,22) and respective extension tubes (28,30,32).
Claim 6
Dependent Claim
28 words
Multilumen catheter (10) according to claim 2 wherein each of said lumens (18,20,22) terminates coextensively with said respective distal end of said inner, middle and outer tubes (12,14,16).
Claim 7
Dependent Claim
23 words
Multilumen catheter (10) according to claim 1 or 2 wherein said inner, middle and outer tubes (12,14,16) are made from flexible, sterilizable materials.
Claim 8
Dependent Claim
26 words
Multilumen catheter (10) according to claim 7 wherein said inner and middle tubes (12,14) are made from a less rigid material than said outer tube (16).
Claim 9
Dependent Claim
18 words
Multilumen catheter (10) according to claim 8 wherein said inner and middle tubes (12,14) are made from polyurethane.
Claim 10
Dependent Claim
15 words
Multilumen catheter (10) according to claim 1 or 2 wherein said manifold (24) is molded.
Claim 11
Dependent Claim
19 words
Multilumen catheter (10) according to claim 1 or 2 wherein said manifold (24) is made in separate molded sections.
Claim 12
Dependent Claim
100 words
Multilumen catheter (10) according to claim 11 wherein said separate molded sections are first, second and third hubs (46,48,52); said first hub (46) defining a channel (29) which receives and secures the inner catheter tube (12) in fluid-tight communication with said respective extension tubing (28); said second hub (48) defining an annular space (31) which receives and secures the middle catheter tube (14) in fluid-tight communication with said respective extension tubing (30); and said third hub (52) defining an annular space (33) which receives and secures the outer catheter tube (16) in fluid-tight communication with said respective extension tubing (32).
Claim 13
Dependent Claim
37 words
Multilumen catheter (10) according to claim 1 or 2 wherein a manifold (24a) secures en encapsualtes a coupled portion of each extension tube, said manifold facilitating fluid communication between each of said lumens and respective extension tubing.
Claim 14
Dependent Claim
28 words
Multilumen catheter (10) according to claim 1 or 2 wherein said proximal end of said inner tube (40) extends beyond said proximal end of said middle tube (42).
Claim 15
Dependent Claim
26 words
Multilumen catheter (10) according to claim 14 wherein said proximal end of said middle tube (42) extends beyond said proximal end of said outer tube (50).
References Cited (Backward Citations)
WO1988010128A1
Cited
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