EMBOLIC CAPTURING DEVICES AND METHODS

• US 20080243170A1
• Filed: 03/30/2007
• Published: 10/02/2008
• Est. Priority Date: 03/30/2007
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Jenson, Mark L., Drasler, William J.
• Application Number:
  US11/694,199
• Publication Number:
  US 20080243170A1
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/22082 after introduction of a substance
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2946 Locking means
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument

Abstract

Disclosed is an emboli capturing device having a first support hoop at a distal portion of a first elongate member, and a support member that is coupled to the first support hoop. The support member can comprise a second elongate member. In some cases, the second elongate member can be coupled to the first support hoop. In other cases, the support member can comprise a second elongate member and a support strut. The support strut can be coupled to both the first support hoop and the second elongate member. Movement of the support member relative to the first elongate member can translate the first support hoop between collapsed and expanded configurations. Once in a desired configuration, the support members can also provide support to maintain the first support hoop in the desired configuration. Also disclosed is a combination emboli capturing and perfusion device. The combination device can have a perfusion member in combination with an emboli capturing device. The perfusion member can facilitate the introduction of fluids around a lesion in a vessel of a patient, for example if the lesion is creating a partial or total occlusion of the vessel.

Claims

1. An emboli capturing device comprising:

a first elongate member with a distal portion;

a first support hoop coupled to the first elongate member distal portion, the first support hoop having a collapsed configuration and an expanded configuration;

a capture membrane disposed on the support hoop forming a capture basket; and

a first support member comprising a second elongate member having a distal end, the first and second elongate members being longitudinally translatable with respect to one another;

wherein the first elongate member is coupled to the first support hoop at a first location on the first support hoop and the first support member is coupled to the first support hoop at a second location on the first support hoop.

2. The device of claim 1, wherein the second elongate member has first distal and second proximal longitudinal positions with respect to the first elongate member, wherein moving the second elongate member between the first and second longitudinal positions translates the first support hoop between collapsed and expanded configurations.

3. The device of claim 2, wherein moving the second elongate member from the first to the second longitudinal position translates the first support hoop from the collapsed to the expanded configuration.

4. The device of claim 2, wherein moving the second elongate member from the first to the second longitudinal position translates the first support hoop from the expanded to the collapsed configuration.

5. The device of claim 1, wherein the second elongate member is coupled to the first support hoop.

6. The device of claim 1, wherein the first support member further comprises a support strut with a first and a second end, the strut being coupled to the first support hoop at the first end and to the second elongate member at the second end.

7. The device of claim 1, wherein the first support member further comprises a second support hoop, and the second support hoop has a base that is coupled to the second elongate member and another portion of the second support hoop is coupled to the first support hoop.

8. The device of claim 1, comprising a second support member comprising a third elongate member, the second and the third elongate members being coupled to the first support hoop.

9. The device of claim 8, wherein the first elongate member is coupled to a base of the first support hoop, the first support member is coupled to the first support hoop at a first side of the first support hoop and the second support member is coupled to the first support hoop at a second side of the first support hoop.

10. The device of claim 8, wherein a distal portion of the second and third elongate members extend proximally from the first support hoop at an angle toward the first elongate member to a proximal point where they are adjacent the first elongate member, and extend from this proximal point proximally along the first elongate member.

11. The device of claim 1, further comprising an alignment member defining a lumen, the alignment member longitudinally fixed along one of the elongate members and having another of the elongate members extending through the lumen.

12. The device of claim 1, further comprising an alignment member defining a lumen through which both of the first and second elongate members extend.

13. The device of claim 1, further comprising an alignment member comprising a tube defining a lumen, wherein both of the elongate members extend through the lumen.

14. The device of claim 1, further comprising an alignment member defining a first and second lumen, wherein the first elongate member extends through the first lumen and the second elongate member extends through the second lumen.

15. The device of claim 1, further comprising an alignment member, the alignment member longitudinally fixed along one of the elongate members.

16. The device of claim 1, wherein the capture membrane is non-porous.

17. The device of claim 1, wherein the capture membrane is a filter membrane having pores.

18. The device of claim 1, further comprising a perfusion member having collapsed and expanded configurations, the perfusion member being wrapped around the first and second elongate members when in the collapsed configuration and defining a perfusion lumen when in the expanded configuration.

19. The device of claim 1, wherein the first elongate member has a distal end and the first support hoop has a base coupled to the distal end.

20. An emboli capturing device comprising:

a first elongate member with a distal portion;

a first support hoop having a base, two sides and a top, the base being coupled to the first elongate member distal portion, the first support hoop having a collapsed configuration and an expanded configuration;

a capture membrane disposed on the support hoop forming a capture basket; and

a first support member comprising a second elongate member having a distal end, the first and second elongate members being longitudinally translatable with respect to one another;

wherein, when the first support hoop is in the collapsed configuration, the first support member is coupled to the first support hoop at a point distal of the first support hoop base.

21. The device of claim 20, wherein the first support member is coupled to at least one of the sides of the first support hoop.

22. The device of claim 20, wherein the first support member is coupled to the top of the first support hoop.

23. The device of claim 20, wherein the second elongate member has first distal and second proximal longitudinal positions with respect to the first elongate member, wherein moving the second elongate member between the first and second longitudinal positions translates the first support hoop between collapsed and expanded configurations.

24. The device of claim 23, wherein moving the second elongate member from the first to the second longitudinal position translates the first support hoop from the collapsed to the expanded configuration.

25. The device of claim 23, wherein moving the second elongate member from the first to the second longitudinal position translates the first support hoop from the expanded to the collapsed configuration.

26. The device of claim 20, wherein the first support member further comprises a support strut with a first and a second end, the strut being coupled to the first support hoop at the first end and to the second elongate member at the second end.

27. The device of claim 20, wherein the first support member further comprises a second support hoop, and the second support hoop has a base that is coupled to the second elongate member and another portion of the second support hoop is coupled to the first support hoop.

28. The device of claim 20, comprising a second support member comprising a third elongate member, the second and third elongate members being coupled to the first support hoop.

29. The device of claim 28, wherein the first elongate member is coupled to a base of the first support hoop, the first support member is coupled to the first support hoop at a first side of the first support hoop and the second support member is coupled to the first support hoop at a second side of the first support hoop.

30. The device of claim 28, wherein a distal portion of the second and third elongate members extend proximally from the first support hoop at an angle toward the first elongate member to a proximal point where they are adjacent the first elongate member, and extend from this proximal point proximally along the first elongate member.

31. The device of claim 20, further comprising an alignment member defining a lumen, the alignment member longitudinally fixed along one of the elongate members and having another of elongate members extending through the lumen.

32. The device of claim 20, further comprising an alignment member defining a lumen through which both of the first and second elongate members extend.

33. The device of claim 20, further comprising an alignment member comprising a tube defining a lumen, wherein both of the elongate members extend through the lumen.

34. The device of claim 20, further comprising an alignment member defining a first and second lumen, wherein the first elongate member extends through the first lumen and the second elongate member extends through the second lumen.

35. The device of claim 20, further comprising an alignment member, the alignment member longitudinally fixed along one of the elongate members.

36. The device of claim 20, wherein the capture membrane is non-porous.

37. The device of claim 20, wherein the capture membrane is a filter membrane having pores.

38. The device of claim 20, further comprising a perfusion member having collapsed and expanded configurations, the perfusion member being wrapped around the first and second elongate members when in the collapsed configuration and defining a perfusion lumen when in the expanded configuration.

39. A method of capturing embolic material comprising:

providing an embolic capturing device comprising a first elongate member with a distal portion, a first support hoop attached to the first elongate member distal portion, the first support hoop having a collapsed configuration and an expanded configuration, a capture membrane disposed on the support hoop forming a capture basket, a support member comprising a second elongate member having a distal end, the first and second elongate members being longitudinally translatable with respect to one another, wherein the first elongate member is coupled to the first support hoop at a first location and the support member is coupled to the first support hoop at a second location;

introducing the embolic capturing device into a patient'"'"'s vasculature;

advancing the embolic capturing device so that the capture basket is distal of an emboli in a patient'"'"'s vasculature;

translating the embolic capturing device from a collapsed configuration to an expanded configuration;

moving an open end of the embolic capturing device toward the emboli; and

capturing the emboli in the capturing device.

40. The device of claim 39, wherein the emboli is adhered to an inner surface of the patient'"'"'s vasculature, and wherein the step of capturing the emboli in the capturing device includes using the emboli capturing device to separate the emboli from the inner surface.

41. The device of claim 39, further comprising the step of providing a perfusion member that has collapsed and expanded configurations, the perfusion member being wrapped around the first and second elongate members when in the collapsed configuration and defining a perfusion lumen when in the expanded configuration, wherein the method further includes the steps of;

introducing the perfusion member into a patient'"'"'s vasculature in the collapsed configuration; and

translating the perfusion member from the collapsed configuration to the expanded configuration.

42. The device of claim 41, wherein the step of translating the perfusion member from the collapsed configuration to the expanded configuration is performed after the step of translating the capturing device from an expanded configuration to a collapsed configuration.

43. The device of claim 41, wherein the step of translating the perfusion member from the collapsed configuration to the expanded configuration is performed before the step of translating the capturing device from an expanded configuration to a collapsed configuration.

44. The device of claim 41, wherein the perfusion member is longitudinally translatable along the elongate members and the method further includes the step of advancing the perfusion member along the emboli capturing device after the emboli capturing device is within the patient'"'"'s vasculature.

45. The device of claim 41, wherein the perfusion member is longitudinally translatable along the elongate members and the method further includes the step of introducing the perfusion member into the patient'"'"'s vasculature and thereafter introducing the emboli capturing device into the patient'"'"'s vasculature along the perfusion member.

46. The device of claim 39, further comprising the steps of translating the capturing device from an expanded configuration to a collapsed configuration and removing the emboli capturing device from the patient along with the captured emboli.

47. A combination perfusion and emboli capturing device comprising:

an emboli capturing device comprising;

a first elongate member with a distal portion;

a first support hoop coupled to the first elongate member distal portion, the first support hoop having a collapsed configuration and an expanded configuration;

a capture membrane disposed on the support hoop forming a capture basket; and

a first support member comprising a second elongate member having a distal end, the first and second elongate members being longitudinally translatable with respect to one another;

wherein the first elongate member is coupled to the first support hoop at a first location and the first support member is coupled to the first support hoop at a second location; and

a perfusion member having collapsed and expanded configurations, the perfusion member being wrapped around the first and second elongate members when in the collapsed configuration and defining a perfusion lumen when in the expanded configuration.

49. The device of claim 47, wherein, when both the perfusion member and the emboli capturing device are in an expanded configuration, both the perfusion member and the emboli capturing device are eccentrically disposed along the first and second elongate members.

48. The device of claim 475 wherein the perfusion member is longitudinally translatable along the first and second elongate members when the perfusion member is in its collapsed configuration.