Device and method for treating a vessel

• US 20090216261A1
• Filed: 08/01/2005
• Published: 08/27/2009
• Est. Priority Date: 08/02/2004
• Status: Active Grant

• Current Assignee: VVT Medical Ltd.
• Original Assignee: VVT Medical Ltd.
• Inventors: Brandeis, Zeev, Shmulewitz, Ascher
• Granted Patent: US 8,545,532 B2
• Time in Patent Office: Days
• US Class Current: 606/192
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/1204 temporary occlusion
• CPC Class Codes: A61B 17/12045 double occlusion, e.g. during anastomosis
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61M 25/09 Guide wires

Abstract

A device and method for treating bodily diseases and/or conditions, for example, varicose veins, tumors and aneutisms including for example insertion of a blocking device toward a target destination using a catheter and delivery of sclerosing or other agents to the vessel while maintaining minimal, for example zero pressure in the treatment area. The blocking device may prevent treatment materials, embolisms, debris etc., from entering the upstream section of vessel. The blocking device may include, for example, a cap or other concave shape and may be expandable or extendible towards the vessel walls.

Claims

1. A vessel blocking device comprising:

an expandable cap to block a vessel; and

a base to stabilize the cap in a vessel.

2. The device of claim 1, comprising an expansion element disposed between the cap and the base.

3. The device of claim 1, comprising an inflatable balloon disposed between the cap and the base.

4. The device of claim 3, wherein the cap partially surrounds the balloon.

5. The device of claim 3, wherein the base partially surrounds the balloon.

6. The device of claim 3, wherein the blocking device is located at the distal tip of an insertion device, and the cap is distal to the insertion device relative to the cap, the balloon being disposed between the cap and the base.

7. The device of claim 1, wherein the cap is concave, and wherein the cap is expandable so that a rim of the cap can extend outwards towards vessel walls.

8. The device of claim 1, wherein the base is expandable outwards towards vessel walls.

9. The device of claim 1, wherein an increase in pressure in the inner portion of the cap causes the cap to expand outwards towards the vessel walls.

10. The device of claim 9, wherein pressure is provided by balloon inflation.

11. The device of claim 1, wherein pressure stored within the cap causes the cap to expand outwards towards the vessel walls.

12. The device of claim 11, wherein pressure is provided by a stent like mechanism.

13. The device of claim 11, wherein pressure is provided by a coil like mechanism.

14. The device of claim 1, wherein the base comprises an anchoring mechanism to anchor the cap to the vessel walls.

15. The device of claim 14, wherein anchoring mechanism comprises spikes.

16. The device of claim 14, wherein anchoring mechanism comprises hooks

17. The device of claim 1, comprising a pullable mechanism to extract the blocking device from a vessel.

18. The device of claim 1, comprising an absorbable wire.

19. The device of claim 18, wherein the absorbable wire is coated with occluding agent.

20. The device of claim 1, comprising a catheter device.

21. The catheter device of claim 20, comprising a guidewire.

22. The catheter device of claim 20, comprising a drug dispensing mechanism.

23. The catheter device of claim 20, comprising a channel for remotely inflating and deflating the balloon.

24. The device of claim 1, wherein the base is cap shaped.

25. A vessel blocking device comprising:

two concave blocking devices, connected at their narrow ends; and

an anchoring mechanism.

26. The device of claim 25, wherein the vessel blocking device is foldable.

27. The device of claim 25, wherein the vessel blocking device has an hourglass shape.

28. The device of claim 25, wherein the concave devices each include a rim, the rim being expandable towards a vessel.

29. The device of claim 25, comprising an expansion element to expand a blocking device towards a vessel.

30. The device of claim 25, comprising a pullable mechanism to extract the expandable vessel blocking device from a vessel.

31. The device of claim 25, comprising an absorbable wire.

32. The device of claim 31, wherein the absorbable wire is coated with occluding agent.

33. The device of claim 25, wherein the anchoring mechanism comprises spikes.

34. The device of claim 25, wherein the anchoring mechanism comprises hooks.

35. The device of claim 25, comprising a catheter device.

36. The catheter device of claim 35, comprising a guidewire.

37. The catheter device of claim 35, comprising a drug dispensing mechanism

38. The catheter device of claim 35, comprising an inner catheter device

39. A treatment method comprising:

inserting a blocking device into a target vessel,

deploying the blocking device to block a treatment area and

delivering an occluding agent to the treatment area while controlling pressure in the treatment area.

40. The method of claim 39, wherein inserting a blocking device includes using an insertion device.

41. The method of claim 40, wherein the insertion device is a catheter.

42. The method of claim 40, wherein the insertion device is a capsule.

43. The method of claim 39, wherein deploying the blocking device comprises expanding the blocking device to fit vessel walls.

44. The method of claim 39, wherein deploying the blocking device includes anchoring the blocking device to the vessel walls.

45. The method of claim 39, wherein deploying the blocking device comprises applying external pressure to the vessel walls to engage the blocking device to the vessel walls.

46. The method of claim 39, wherein deploying the blocking device includes using an absorbable wire to guide and hold the blocking device to a selected location

47. The method of claim 40 comprising disconnecting and removing unnecessary elements from the vessel using the insertion device.

48. The method of claim 39, wherein an occluding agent is a sclerosing agent.

49. The method of claim 39 comprising delivering of an occluding agent using a catheter.

50. The method of claim 39 comprising controlling pressure in the treatment area using suction of content from treatment area.

51. The method of claim 39 comprising controlling pressure in the treatment area by reduction of pressure in the treatment area.

52. The method of claim 50, wherein the suction of content from treatment area is per formed using a suction device.

53. The method of claim 52, wherein the suction device is a pump.

54. The method of claim 52, wherein the suction device is a balloon.

55. The method of claim 52, wherein the suction device is a syringe.

56. The method of claim 50 comprising controlling pressure in the treatment area using suction of content from treatment area while delivering an agent to the treatment area.

57. The method of claim 39, wherein controlling pressure in the treatment area includes maintaining the pressure in treatment area.

58. The method of claim 57 comprising maintaining zero pressure in the treatment area

59. The method of claim 57, wherein controlling pressure in the treatment area comprises reducing entry of sclerosing agents into the blood stream, external to the treatment area.

60. The method of claim 39 comprising using as a blocking device two caps connected at their narrow ends.

61. The method of claim 39 comprising using an expandable ring shaped blocking device.

62. The method of claim 39 comprising using an expandable figure-8 shaped blocking device.

63. The method of claim 39 comprising using an expandable oval shaped blocking device.