Expandable retrieval device

• US 20040127936A1
• Filed: 10/02/2003
• Published: 07/01/2004
• Est. Priority Date: 10/03/2002
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Schultz, Michael, Laduca, Paul, Broome, Thomas E., Salahieh, Amr
• Granted Patent: US 7,998,163 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• 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 2017/2212 having a closed distal end, e.g. a loop

Abstract

A device for retrieving an intravascular device from a body lumen is disclosed. A retrieval device in accordance with an exemplary embodiment of the present invention includes a braided member coupled to an elongated shaft member. The braided member may include a number of filaments defining a radially expandable inner lumen configured to receive and encapsulate the intravascular device therein. An elastomeric jacket disposed about at least a portion of the braided member may encase the filaments.

Claims

1. A medical device for retrieving an intravascular device from a body lumen, comprising:

an elongated shaft member having a proximal section and a distal section; and

a braided member coupled to the distal section of the elongated shaft member, the braided member including a plurality of filaments and defining a radially expandable inner lumen configured to receive and encapsulate the intravascular device therein;

wherein said plurality of filaments are configured to radially expand when axially compressed.

2. The medical device of claim 1, wherein the elongated shaft member includes polyether block amide.

3. The medical device of claim 1, wherein the distal section of the elongated shaft member is flared.

4. The medical device of claim 1, wherein said plurality of filaments are arranged in two sets of parallel helices wound in opposite directions about a common longitudinal axis.

5. The medical device of claim 1, wherein said plurality of filaments comprise multi-filar threads.

6. The medical device of claim 1, wherein said plurality of filaments comprise a composite material.

7. The medical device of claim 6, wherein said composite material includes a radiopaque material.

8. The medical device of claim 1, wherein said plurality of filaments comprise a polymeric material.

9. The medical device of claim 1, wherein said plurality of filaments comprise a metal.

10. The medical device of claim 1, further comprising an elastomeric jacket encasing at least part of said braided member.

11. The medical device of claim 10, wherein said elastomeric jacket includes silicone.

12. The medical device of claim 10, wherein said elastomeric jacket includes urethane.

13. The medical device of claim 10, wherein said elastomeric jacket includes C-flex.

14. The medical device of claim 10, wherein said elastomeric jacket includes a radiopaque material.

15. A medical device for retrieving an intravascular device from a body lumen, comprising:

an elongated shaft member having a proximal section and a distal section;

a braided member coupled to the distal section of the elongated shaft member, the braided member including plurality of filaments and defining a radially expandable inner lumen configured to receive and encapsulate the intravascular device therein; and

an elastomeric jacket encasing at least part of said braided member.

16. The medical device of claim 15, wherein the elongated shaft member includes polyether block amide.

17. The medical device of claim 15, wherein the distal section of the elongated shaft member is flared.

18. The medical device of claim 15, wherein said plurality of filaments are arranged in two sets of parallel helices wound in opposite directions about a common longitudinal axis.

19. The medical device of claim 15, wherein said plurality of filaments are configured to radially expand when axially compressed.

20. The medical device of claim 15, wherein said plurality of filaments comprise multi-filar threads.

21. The medical device of claim 15, wherein said plurality of filaments comprise a composite material.

22. The medical device of claim 21, wherein said composite material includes a radiopaque material.

23. The medical device of claim 15, wherein said plurality of filaments comprise a polymeric material.

24. The medical device of claim 15, wherein said plurality of filaments comprise a metal.

25. The medical device of claim 15, wherein said elastomeric jacket includes silicone.

26. The medical device of claim 15, wherein said elastomeric jacket includes urethane.

27. The medical device of claim 15, wherein said elastomeric jacket includes C-flex.

28. The medical device of claim 15, wherein said elastomeric jacket includes a radiopaque material.

29. A medical device for retrieving an intravascular device from a body lumen, comprising:

an elongated shaft member having a proximal section and a flared distal section;

a braided member coupled to the distal section of the elongated shaft member, the braided member including plurality of filaments arranged in two sets of parallel helices wound in opposite directions about a common longitudinal axis and defining a radially expandable inner lumen configured to receive and encapsulate the intravascular device therein; and

an elastomeric jacket encasing at least part of said braided member.