US5149330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter convertible from single to multilumen
Assignee: Kendall Co
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Filing: 1991-01-10
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Granted: 1992-09-22
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Expires: 2011-01-10
Abstract
Abstract A catheter capable of being converted from a single lumen catheter into a multilumen catheter. The catheter of the present invention comprises a first large bore catheter tube and a second catheter tube having at least one lumen and an outer diameter which is smaller than the inner diameter of the first catheter tube and which is capable of being disposed within the first catheter tube. When the second catheter tube is disposed within the first catheter tube, the second catheter tube abuts a portion of the inner wall of the first catheter tube to form a single lumen between the inner wall of the first catheter tube and the outer wall of second catheter tube. The first catheter tube has a first connector portion at its proximal end which is mateable with a second connector portion at the proximal end of the second catheter tube. The connector portions are mateable in fluid tight relationship and are operative to maintain the first and second catheter tubes in nested relationship to each other and provide multiple lumens.
Inventors
- 👤 Jerry R. Brightbill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:12
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/0034; A61M2025/0037; A61M25/0009
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
248 words
A venous catheter capable of being converted from a single lumen large bore venous catheter into a multilumen catheter comprising: a first flexible elongated large bore catheter tube adapted for insertion in the vein of a patient and having a proximal end, a distal end, an inner wall and a single bore extending there through; a second flexible elongated catheter tube having a proximal end, a distal end, an outer wall and defining at least one lumen extending there through and terminating in at least one opening; said second catheter tube having an outer diameter which is smaller than the inner diameter of said first catheter tube, and capable of being removably disposed within said first catheter tube abutting a portion of the inner wall of said first catheter tube and defining a single lumen in the portion of the bore between the inner wall of said first catheter tube and the outer wall of said second catheter tube; said single lumen terminating in at least one opening in said first catheter tube; a connector having a first connector portion affixed to the proximal end of the first catheter tube, and a second connector portion affixed to the proximal end of the second catheter tube, said connector portions being mateable to provide a fluid tight coupling, said connector being a standard luer connector with locking threads; said second catheter tube being removably coupled in a fluid tight relationship to said first catheter tube via said mateable connector portions.
Claim 2
Dependent Claim
248 words
A venous catheter capable of being converted from a single lumen large bore venous catheter into a multilumen catheter comprising: a first flexible elongated large bore catheter tube adapted for insertion in the vein of a patient and having a proximal end, a distal end, an inner wall and a single bore extending there through; a second flexible elongated catheter tube having a proximal end, a distal end, an outer wall and defining at least one lumen extending there through and terminating in at least one opening; said second catheter tube having an outer diameter which is smaller than the inner diameter of said first catheter tube, and capable of being removably disposed within said first catheter tube abutting a portion of the inner wall of said first catheter tube and defining a single lumen in the portion of the bore between the inner wall of said first catheter tube and the outer wall of said second catheter tube; said single lumen terminating in at least one opening in said first catheter tube; a connector having a first connector portion affixed to the proximal end of the first catheter tube, and a second connector portion affixed to the proximal end of the second catheter tube, said connector portions being mateable to provide a fluid tight coupling, said connector being a standard luer connector with locking threads; said second catheter tube being removably coupled in a fluid tight relationship to said first catheter tube via said mateable connector portions.
Claim 3
Dependent Claim
90 words
The catheter of claim 1 wherein said second catheter tube further comprises a manifold coupled to said proximal end of said second catheter tube, and extension tubing coupled to said manifold; said manifold providing separate fluid communication between said at least one lumen of said second catheter tube and said extension tubing via at least one channel, and wherein said manifold also provides fluid communication between said single lumen and said extension tubing via a channel when said first and second catheter tubes are assembled together in said fluid-tight relationship.
Claim 4
Dependent Claim
21 words
The catheter of claim 2 wherein said extension tubing is configured for attachment to fluid transfer devices or pressure monitoring devices.
Claim 5
Dependent Claim
16 words
The catheter of claim 2 wherein said manifold is integrally formed with said second catheter tube.
Claim 6
Dependent Claim
49 words
The catheter of claim 2 wherein said manifold extends proximally beyond said first and second catheter tubes when said second catheter tube is disposed within said first catheter tube and said respective mateable connector portions of said first and second catheter tubes are joined in said fluid tight relationship.
Claim 7
Dependent Claim
22 words
The catheter of claim 2 wherein said manifold is made from materials selected from the group consisting of polycarbonate, polyurethane, and PVC.
Claim 8
Dependent Claim
23 words
The catheter of claim 1 wherein said first connector portion of said first catheter tube is integrally formed with said first catheter tube.
Claim 9
Dependent Claim
23 words
The catheter of claim 1 wherein said second connector portion of said second catheter tube is integrally formed with said second catheter tube.
Claim 10
Dependent Claim
34 words
The catheter of claim 1 wherein said second catheter tube extends longitudinally outward from said distal end of said first catheter tube when said second catheter tube is disposed within said first catheter tube.
Claim 11
Dependent Claim
13 words
The catheter of claim 1 wherein said second catheter tube has one lumen.
Claim 12
Dependent Claim
20 words
The catheter of claim 10 wherein said one lumen terminates in at least one opening in said second catheter tube.
Claim 13
Dependent Claim
19 words
The catheter of claim 1 wherein said second catheter tube is a dual-lumen catheter having first and second lumens.
Claim 14
Dependent Claim
48 words
The catheter of claim 12 wherein said first lumen of said second catheter tube terminates in a side-opening in said second catheter tube upstream from said distal end of said second catheter tube, and said second lumen terminates coextensively with said distal end of said second catheter tube.
Claim 15
Dependent Claim
56 words
The catheter of claim 13 wherein said first catheter tube has a side opening which is in fluid tight alignment with said side opening in said second catheter tube when said second catheter tube is disposed within said first catheter tube, and said first and second mateable connector portions are joined in said fluid tight relationship.
Claim 16
Dependent Claim
25 words
The catheter of claim 14 wherein said single lumen of said first catheter tube terminates coextensively with said distal end of said first catheter tube.
Claim 17
Dependent Claim
41 words
The catheter of claim 14 wherein said distal end of said first catheter tube is tapered and abuts the second catheter tube, and wherein said single lumen terminates in a side-opening upstream from tapered distal end of said first catheter tube.
Claim 18
Dependent Claim
35 words
The catheter of claim 15 or 16 wherein said first and second lumens of said second catheter tube and said single lumen of said first catheter tube terminate at positions spaced apart from one another.
Claim 19
Dependent Claim
18 words
The catheter of claim 1 wherein said first and second catheter tubes are made from flexible, sterilizable materials.
Claim 20
Dependent Claim
22 words
The catheter of claim 18 wherein said materials are selected from the group consisting of polyurethane, silicone, polyvinyl chloride (PVC) and nylon.
Claim 21
Dependent Claim
16 words
The catheter of claim 19 wherein said first and second catheter tubes are made from polyurethane.
Claim 22
Dependent Claim
19 words
The catheter of claim 1 wherein said first and second connector portions are made from rigid, sterilizable, plastic materials.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |