Claims
- 1. A catheter with a valve for implantation in a vascular structure, said catheter comprising:
- an intravascular tube adapted to be implanted in a lumen of a blood vessel, said intravascular tube having an outer side wall and a lumen bounded by an inner wall therethrough;
- a flexible access leg having a distal end connected to the outer side wall of the intravascular tube and having a lumen therethrough which is fluidly coupled to the lumen of the intravascular tube; and
- a valve disposed at the distal end of the access leg, wherein the valve is flush with the inner wall of the lumen of the intravascular tube and wherein said valve opens in response to differential pressure.
- 2. A catheter as in claim 1, wherein the valve is a slit valve formed in the intravascular tube so that the slit valve is flush with the inner wall of the intravascular tube.
- 3. A catheter as in claim 2, wherein the slit valve is oriented in a direction parallel to the lumen of the intravascular tube.
- 4. A catheter as in claim 1, wherein the access leg is disposed at an inclined angle relative to the lumen of the intravascular tube.
- 5. A catheter as in claim 4, wherein the inclined angle is 45.degree..
- 6. A catheter as in claim 1, wherein the intravascular tube has a length in the range from 20 mm to 50 mm, and outer diameter in the range from 3 mm to 6 mm, and a lumenal diameter in the range from 1 mm to 4 mm.
- 7. A catheter as in claim 6, wherein the access tube has a length of approximately 100 mm.
- 8. A catheter as in claim 1, wherein the valve is bidirectional.
- 9. A catheter as in claim 1, wherein the valve is a slit valve.
- 10. A catheter as in claim 1, wherein the intravascular tube has an expanded cap at at least one end thereof.
- 11. A catheter as in claim 1, wherein the intravascular tube and access leg are composed of wire-reinforced silicone rubber.
- 12. A catheter with a valve for implantation in a vascular structure, said catheter comprising:
- an intravascular tube adapted to be implanted in a lumen of a blood vessel, said intravascular tube having an outer side wall and a lumen bounded by an inner wall therethrough;
- a bidirectional flexible access leg having a distal end connected to the outer side wall of the intravascular tube and having a lumen therethrough which is fluidly coupled to the lumen of the intravascular tube; and
- a valve disposed at the distal end of the access leg, wherein said valve opens in response to a differential pressure.
- 13. A catheter as in claim 12, wherein the valve is a slit valve formed in the intravascular tube so that the slit valve is flush with the inner wall of the intravascular tube.
- 14. A catheter as in claim 13, wherein the slit valve is oriented in a direction parallel to the lumen of the intravascular tube.
- 15. A catheter as in claim 12, wherein the access leg is disposed at an inclined angle relative to the lumen of the intravascular tube.
- 16. A catheter as in claim 15, wherein the inclined angle is 45.degree..
- 17. A catheter as in claim 12, wherein the intravascular tube has a length in the range from 20 mm to 50 mm, and outer diameter in the range from 3 mm to 6 mm, and a lumenal diameter in the range from 1 mm to 4 mm.
- 18. A catheter as in claim 17, wherein the access tube has a length of approximately 100 mm.
- 19. A catheter as in claim 12, wherein the valve is flush with the inner wall of the lumen of the intravascular tube.
- 20. A catheter as in claim 12, wherein the valve is a slit valve.
- 21. A catheter as in claim 12, wherein the intravascular tube has an expanded cap at at least one end thereof.
- 22. A catheter as in claim 12, wherein the intravascular tube and access leg are composed of wire-reinforced silicone rubber.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 08/183,151, now U.S. Pat. No. 5,562,617 filed on Jan. 18, 1994.
US Referenced Citations (63)
Foreign Referenced Citations (1)
Number |
Date |
Country |
228532 |
Jan 1983 |
EPX |
Non-Patent Literature Citations (1)
Entry |
Trans. of Amer. Soc. for Art. Int. Organs vol. 28, 14 Apr. 1982: 16 Apr. 1982; Chicago, Ill.; pp. 54-57. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
183151 |
Jan 1994 |
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