US5453095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One piece self-aligning, self-lubricating catheter valve
Assignee: Cordis Corp
•
Filing: 1994-06-07
•
Granted: 1995-09-26
•
Expires: 2014-06-07
Abstract
Abstract An elastomeric valve partition is conventionally mounted on a catheter comprising a tubular catheter body. The valve partition defines a central aperture extending inwardly from one of the faces, only partway through the valve partition. The partition also carries a plurality of radial slits extending from the other of the faces only partway through the valve partition and intersecting the central aperture. The central aperture is of a diameter to closely fit a guidewire extending through the valve partition, while the radial slits have a length that is at least double the radius of the central aperture. The slits preferably rotate circumferentially about 5 to 60 degrees as they extend through the valve partition from one face toward the other. A lubricity enhancing additive is present, selected from the group consisting of bismuth oxychloride, polytetrafluoroethylene, titanium dioxide, graphite, polyethylene wax, polyvinylpyrrolidone, and combinations thereof.
Inventors
- 👤 Luis A. Davila
- 👤 Carlo R. De La Mata
- 👤 Stephen J. Querns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M2039/062; A61M2039/0633; A61M2039/064; A61M2039/0653
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
161 words
A catheter which comprises a tubular catheter body having a proximal and a distal end, a housing carried on said proximal end, said housing carrying an elastomeric valve partition having a first face that faces the catheter distal end, and a second, opposed face, said valve partition being secured in said housing, said valve partition defining a central aperture extending inwardly from one of said faces and extending only part way through said valve partition, said valve partition also carrying a plurality of radial slits extending from the other of said faces only part way through said valve partition and intersecting said central aperture, said central aperture being of a diameter to closely fit a guidewire extending through said valve partition, said radial slits each having a length that is at least double the radius of said central aperture, said slits rotating circumferentially by about 5-60 degrees as said slits extend through said valve partition from one face toward the other.
Claim 2
Dependent Claim
161 words
A catheter which comprises a tubular catheter body having a proximal and a distal end, a housing carried on said proximal end, said housing carrying an elastomeric valve partition having a first face that faces the catheter distal end, and a second, opposed face, said valve partition being secured in said housing, said valve partition defining a central aperture extending inwardly from one of said faces and extending only part way through said valve partition, said valve partition also carrying a plurality of radial slits extending from the other of said faces only part way through said valve partition and intersecting said central aperture, said central aperture being of a diameter to closely fit a guidewire extending through said valve partition, said radial slits each having a length that is at least double the radius of said central aperture, said slits rotating circumferentially by about 5-60 degrees as said slits extend through said valve partition from one face toward the other.
Claim 3
Dependent Claim
18 words
The catheter of claim 1 in which said central aperture has a diameter of 0.02 to 0.04 inch.
Claim 4
Dependent Claim
24 words
The catheter of claim 2 in which said central aperture has a depth that is from about 100 to 200 percent of its diameter.
Claim 5
Dependent Claim
24 words
The catheter of claim 1 in which said central aperture has a depth that is from about 100 to 200 percent of its diameter.
Claim 6
Dependent Claim
41 words
The catheter of claim 1 in which said valve partition comprises from about 5 to 20 weight percent of a lubricity enhancing additive selected from the group consisting of bismuth oxychloride, polytetrafluoroethylene, titanium dioxide, graphite, polyethylene wax, polyvinylpyrrolidone, and combinations thereof.
Claim 7
Dependent Claim
21 words
The catheter of claim 5 in which said valve partition comprises silicone rubber and has an elongation of at least 900.
Claim 8
Dependent Claim
12 words
The catheter of claim 6 in which said additive is bismuth oxychloride.
Claim 9
Dependent Claim
20 words
The catheter of claim 5 in which said valve partition comprises from about 5 to 15 weight percent of graphite.
Claim 10
Dependent Claim
20 words
The catheter of claim 8 in which said valve partition comprises silicone rubber having an elongation of at least 900.
Claim 11
Dependent Claim
20 words
The catheter of claim 1 in which said valve partition comprises silicone rubber having an elongation of at least 900.
Claim 12
Dependent Claim
19 words
the catheter of claim 1 in which said valve partition defines from 4 to 6 of said radial slits.
Claim 13
Dependent Claim
172 words
A catheter which comprises a tubular catheter body having a proximal end and a distal end, a housing carried on said proximal end, said housing carrying an elastomeric valve partition having a first face that faces the catheter distal end, and a second, opposed face, said valve partition being secured in said housing, said valve partition defining a central aperture extending inwardly from the second face, and extending only part way through said valve partition, said valve partition also carrying at least three radial slits extending from the first face only part way through said valve partition and intersecting said central aperture, said central aperture being of a diameter to closely fit a guidewire extending through said valve partition, said radial slits each having a length that is at least double the radius of said central aperture, and rotating circumferentially by about 5-60 degrees as said radial slits extend through said valve partition from one face toward the other, said valve partition comprising silicone rubber having an elongation of at least 900.
Claim 14
Dependent Claim
172 words
A catheter which comprises a tubular catheter body having a proximal end and a distal end, a housing carried on said proximal end, said housing carrying an elastomeric valve partition having a first face that faces the catheter distal end, and a second, opposed face, said valve partition being secured in said housing, said valve partition defining a central aperture extending inwardly from the second face, and extending only part way through said valve partition, said valve partition also carrying at least three radial slits extending from the first face only part way through said valve partition and intersecting said central aperture, said central aperture being of a diameter to closely fit a guidewire extending through said valve partition, said radial slits each having a length that is at least double the radius of said central aperture, and rotating circumferentially by about 5-60 degrees as said radial slits extend through said valve partition from one face toward the other, said valve partition comprising silicone rubber having an elongation of at least 900.
Claim 15
Dependent Claim
39 words
The catheter of claim 12 in which said valve partition comprises about 5 to 20 weight percent of a lubricity enhancing additive selected from the group consisting of bismuth oxychloride, polytetrafluoroethylene, titanium dioxide, polyethylene wax, polyvinylpyrrolidone, and combinations thereof.
Claim 16
Dependent Claim
12 words
The catheter of claim 13 in which said additive is bismuth oxychloride.
Claim 17
Dependent Claim
28 words
The catheter of claim 12 in which said partition comprises a lubricity enhancing additive which comprises graphite present in a concentration of about 5 to 15 weight percent.
Claim 18
Dependent Claim
19 words
The catheter of claim 12 in which said valve partition defines from 4 to 6 of said radial slits.
References Cited (Backward Citations)
US4424833A
Cited
US4610674A
Cited
US4929235A
Cited
US4626245A
Cited
US4798594A
Cited
US4895565A
Cited
EP0344907A2
Cited
US5304156A
Cited
US4932633A
Cited
US5149327A
Cited
US5176652A
Cited
US5226879A
Cited
US5167637A
Cited
US5102395A
Cited
US5242413A
Cited
US5350363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |