Artificial venous valve and sizing catheter

• US 6,319,281 B1
• Filed: 03/22/1999
• Issued: 11/20/2001
• Est. Priority Date: 03/22/1999
• Status: Expired due to Fees

• Current Assignee: Kumar R. Patel
• Original Assignee: Kumar R. Patel
• Inventors: Patel, Kumar R.
• Primary Examiner(s): O'Connor, Cary E.
• Application Number:
  US09/274,715
• Time in Patent Office: 974 Days
• Field of Search: 623/1.24, 623/1.26, 623/900, 623/2, 623/2.37, 606/198, 606/108, 606/194, 606/200, 600/587, 335/11, 335/12
• US Class Current: 623/2.3
• CPC Class Codes: A61B 5/1076 for measuring dimensions inside body cavities, e.g. using catheters A61B3/1005 takes precedence
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2475 Venous valves
• CPC Class Codes: A61F 2/2496 Devices for determining the dimensions of the prosthetic valve to be implanted, e.g. templates, sizers
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00

Abstract

A valve device for use in a body cavity. The device including a valve ring having a compressible diameter. Further, leaflets are pivotally disposed within the valve ring for movement from an open position to a closed position. A catheter device including a first catheter and a second catheter disposed within the first catheter. The first catheter includes an expandable member disposed at a lower end. The device also includes a scale. The second catheter being advanced within the first catheter causes the expandable member to move to an expanded position, which corresponds to a diameter measurement on the scale.

Claims

1. A self-expanding, self-attaching venous valve device for percutaneous insertion into a body cavity, comprising:

a valve ring having a compressible diameter biased toward an expanded position; and

leaflets hingedly and pivotally disposed within said valve ring for movement from an open position to a closed position.

2. The device of claim 1, wherein said valve ring includes a first plurality of arcuate tubes and a second plurality of arcuate tubes telescopicably disposed in said first tubes.

3. The device of claim 2, which further includes a spring disposed in each of said first tubes between two of said second tubes.

4. The device of claim 2, wherein said second tubes at each end include projections extended outward, said first tubes include at each end includes a lip extending inward, wherein said projections engage said lip in order to prevent disconnection of the first and second tubes.

5. The device of claim 4, wherein said projections are spring loaded.

6. The device of claim 2, wherein said leaflets include ridges on an underside to provide a seal between said leaflets and said second tubes.

7. The device of claim 1, wherein said valve ring includes grooves for applying a radial force to compress said compressible diameter.

8. The device of claim 1, further including barbs extending outward from said valve ring.

9. The device of claim 1, wherein each of said leaflets are pivotally connected to said valve ring by an unbiased hinge having a peripheral axis.

10. The device of claim 1, wherein said expanded position of said compressible diameter is predetermined prior to percutaneous insertion.

11. The device of claim 1, wherein said valve ring is fully expanded to the diameter of the body cavity in a resting position.

12. A catheter device for percutaneous insertion into a body cavity, comprising:

a first catheter;

an expandable member disposed at a lower end of said first catheter and inside said first catheter;

a second catheter disposed within said first catheter; and

a scale included on said device;

wherein said second catheter being advanced within said first catheter causes said expandable member to move to an expanded position, wherein said expanded position corresponds to a diameter measurement on said scale.

13. The device of claim 12, wherein said second catheter includes a tapered lower end.

14. The device of claim 13, wherein said tapered lower end has an elongated conical shape.

15. The device of claim 12, wherein said expandable member has a cylindrical configuration.

16. The device of claim 12, wherein said expandable member includes separate plates.

17. The device of claim 16, wherein said plates are four separate plates.

18. The device of claim 16, wherein said plates are attached to said inner surface of said first catheter.

19. The device of claim 16, wherein said plates are arranged in a substantially co-planar arrangement.

20. The device of claim 16, which further includes a spring disposed around outer edges of said plates.

21. The device of claim 20, wherein said outer edges of said plates include a groove in order to receive said spring.

22. The device of claim 12, wherein said first catheter includes longitudinal slits.

23. The device of claim 22, wherein said longitudinal slits are aligned with spaces between said plates.

24. The catheter device of claim 12, wherein said scale is provided on said second catheter.

25. A venous valve device for percutaneous insertion into a body cavity, comprising:

a valve ring having a compressible diameter biased toward an expanded position,

leaflets pivotally disposed within said valve ring for movement from an open position to a closed position,

wherein said valve ring includes a first plurality of arcuate tubes and a second plurality of arcuate tubes telescopically disposed in said first tubes, and

wherein said second tubes at each end include spring loaded projections extended outward, said first tubes include at each end a lip extending inward, wherein said projections engage said lip in order to prevent disconnection of said first and second tubes.

26. A catheter device, comprising:

a first catheter;

an expandable member disposed at a lower end of said first catheter and further comprising separate plates attached to an inner surface of said first catheter;

a second catheter disposed within said first catheter; and

a scale included on said device;

wherein said second catheter being advanced within said first catheter causes said expandable member to move to an expanded position, wherein said expanded position corresponds to a diameter measurement on said scale.

27. A catheter device, comprising:

a first catheter;

an expandable member disposed at a lower end of said first catheter,

said expandable member further comprising separate plates attached to an inner surface of said first catheter and a spring disposed around outer edges of said plates;

a second catheter disposed within said first catheter; and

a scale included on said device;

wherein said second catheter being advanced within said first catheter causes said expandable member to move to an expanded position, wherein said expanded position corresponds to a diameter measurement on said scale.