EP0490459A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Multilumen catheter
Assignee: Kendall Co
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Filing: 1991-12-13
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Granted: —
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Expires: 2011-12-13
Abstract
Abstract A multilumen catheter (10) having a plurality of flexible, elongated catheter tubes (12,14,16) concentrically and coaxially disposed, each catheter tube (12,14,16) defining a separate lumen (18,20,22), each catheter tube (12,14,16) having a distal end (34,36,38) which extends outwardly from the distal end of the next surrounding catheter tube, and each catheter tube (12,14,16) having a proximal end (40,42,50) which is secured and encapsulated by a manifold (24) which facilitates fluid communication between each of the separate lumens (18,20,22) and fluid transfer devices or pressure monitoring devices via separate extension tubing.
Inventors
- 👤 James R. Gross
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 07:38
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: 18
Claim 1
Independent Claim
181 words
A multilumen catheter comprising: an inner catheter tube defining a first lumen having a proximal end, and a distal end; a middle catheter tube defining a second lumen and having a proximal end, a distal end and a cross-section which is greater than the cross-section of said inner tube, said middle tube being disposed concentrically and coaxially with said inner tube, and said distal end of said inner tube extending longitudinally outward from said distal end of said middle tube; an outer catheter tube defining a third lumen and having a proximal end, a distal end and a cross-section which is greater than the cross-section of said middle tube, said outer tube being disposed concentrically and coaxially with said middle tube and said inner tube, and said distal end of said middle tube extending longitudinally outward from said distal end of said outer tube; a manifold securing and encapsulating each of said proximal ends of said inner, middle and outer tubes; and a plurality of extension tubes coupled to said manifold, each separately coupled to a respective one of said lumens.
Claim 2
Dependent Claim
23 words
The multilumen catheter of claim 1 wherein said extension tubes are configured for connection to a fluid transfer device or pressure monitoring means.
Claim 3
Dependent Claim
21 words
The catheter of claim 2 wherein said manifold includes channels for separately coupling each of said lumens and respective extension tubes.
Claim 4
Dependent Claim
24 words
The catheter of claim 1 wherein each of said lumens terminates coextensively with said respective distal end of said inner, middle and outer tubes.
Claim 5
Dependent Claim
76 words
The catheter of claim 1 wherein said distal end of said outer tube is tapered and abuts said middle tube, and said distal end of said middle tube is tapered and abuts said inner tube; and wherein said second lumen terminates in a side opening slightly upstream from said tapered distal end of said middle tube, and said third lumen terminates in a side opening slightly upstream from said tapered distal end of said outer tube.
Claim 6
Dependent Claim
43 words
The catheter of claim 1 wherein said distal end of said middle tube and said distal end of said outer tube each terminate in a flexible, tapered tip which expands under the pressure of fluid flowing in the respective second and third lumens.
Claim 7
Dependent Claim
19 words
The catheter of claim 6 wherein said distal end of said inner tube terminates in a flexible, tapered tip.
Claim 8
Dependent Claim
21 words
The catheter of claim 7 wherein said flexible tips act as check valves to prevent backflow through each of said lumens.
Claim 9
Dependent Claim
18 words
The catheter of claim 1 wherein said inner, middle, and outer tubes are made from flexible, sterilizable materials.
Claim 10
Dependent Claim
16 words
The catheter of claim 9 wherein said materials include polyurethane, silicone, polyvinyl chloride (PVC) and nylon.
Claim 11
Dependent Claim
22 words
The catheter of claim 9 wherein said inner and middle tubes are made from a less rigid material than said outer tube.
Claim 12
Dependent Claim
15 words
The catheter of claim 11 wherein said inner and middle tubes are made from polyurethane.
Claim 13
Dependent Claim
10 words
The catheter of claim 1 wherein said manifold is molded.
Claim 14
Dependent Claim
15 words
The catheter tube of claim 1 wherein said manifold is made in separate molded sections.
Claim 15
Dependent Claim
85 words
The catheter tube of claim 14 wherein said separate molded sections are first, second and third hubs; said first hub defining channel which receives and secures the inner catheter tube in fluid-tight communication with said respective extension tubing; said second hub defining an annular space which receives and secures the middle catheter tube in fluid-tight communication with said respective extension tubing; and said third hub defining an annular space which receives and secures the middle catheter tube in fluid-tight communication with said respective extension tubing.
Claim 16
Dependent Claim
106 words
A multilumen catheter comprising: a plurality of concentrically and coaxially disposed catheter tubes, each of said plurality of catheter tubes defining a lumen and each having a proximal end and a distal end which extends outwardly from the distal end of the next surrounding tube; extension tubing coupled to each of said lumens defined by said plurality of catheter tubes and configured for attachment to utilization means; and a manifold securing and encapsulating each of said proximal ends of said plurality of catheter tubes and a coupled portion of said extension tubing, said manifold facilitating fluid communication between each of said lumens and respective extension tubing.
Claim 17
Dependent Claim
23 words
The catheter tube of claim 1 wherein said proximal end of said inner tube extends beyond said proximal end of said middle tube.
Claim 18
Dependent Claim
23 words
The catheter tube of claim 17 wherein said proximal end of said middle tube extends beyond said proximal end of said outer tube.
References Cited (Backward Citations)
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