Vascular occluder

• US 5,683,405 A
• Filed: 08/25/1995
• Issued: 11/04/1997
• Est. Priority Date: 08/25/1995
• Status: Expired due to Term

• Current Assignee: Research Medical, Inc. (Baxter International Inc.), Edwards Lifesciences Corporation, Vahe S. Yacoubian
• Original Assignee: Research Medical, Inc. (Baxter International Inc.)
• Inventors: Wright, John T.M., Yacoubian, Vahe S., Fox, Douglas G., Elliott, Donald P.
• Primary Examiner(s): SCHMIDT, JEFFREY
• Application Number:
  US08/519,317
• Time in Patent Office: 802 Days
• Field of Search: 606/158, 606/157, 606/151, 606/139, 606/221, 606/208, 606/207, 606/205, 606/210, 606/211, 227/902, 600/201, 600/217, 600/218, 24/530, 24/557, 24/545-549, 24/551-554
• US Class Current: 606/158
• CPC Class Codes: A61B 17/1227 Spring clips
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: Y10T 24/44769 Opposed engaging faces on gripping member formed from single piece of resilient material
• CPC Class Codes: Y10T 24/44786 Opposed faces located in and bias towards common plane in nonuse position
• CPC Class Codes: Y10T 24/44803 Resilient gripping member having coiled portion

Abstract

A vascular occluder clip including a resiliently-biased pair of clamping elements extending transversely to longitudinally-extending members. Gripping loops or pads are provided for grasping by the user and compression of the members against the biasing force to separate the clamping elements. The gripping loops or pads extend from the longitudinal members on the opposite side thereof from the clamping elements.

Claims

1. An apparatus for occluding a blood vessel, comprising:

first and second longitudinally extending members formed from a single piece of wire, said members each including proximal and distal portions, said proximal portions being mutually laterally separated;

said distal portions of each of said members having substantially mutually parallel, substantially, linear, pointed distal ends extending substantially transversely to said distal portions of said members;

means formed from said single piece of wire for resiliently biasing said distal ends of said members into close mutual proximity; and

means for gripping each of said members on the proximal portions thereof, said means for gripping extending transversely to said longitudinal members to one side thereof opposite in direction to said distal ends of said distal member portions.

2. The apparatus of claim 1, further including a base extending between said proximal portions of each of said members, said base and said members being formed of resilient wire, and wherein said means for resiliently biasing comprises said base and said proximal portions of said members.

3. The apparatus of claim 2, wherein said members each further include medial portions, said members cross in superimposed relationship proximate the juncture of said medial and distal portions, and said distal portions of said members proximate said juncture lie in close mutual proximity.

4. The apparatus of claim 3, wherein said pointed distal ends comprise trocar points.

5. The apparatus of claim 1, wherein said means for gripping comprise pads affixed to said members.

6. The apparatus of claim 5, wherein said pads extend from integral sleeves surrounding a portion of each of said members.

7. The apparatus of claim 2, wherein said means for gripping comprise pads affixed to said proximal portions of said members.

8. The apparatus of claim 7, wherein said pads extend from an integral sleeve surrounding said base and at least part of said proximal portions of each of said members.

9. The apparatus of claim 8, wherein said integral sleeve and pads are formed of plastic, and said means for resiliently biasing further comprises said plastic sleeve in combination with said base and proximal portions of said members.

10. The apparatus of claim 1, wherein said means for gripping are planar and of arcuate profile.

11. The apparatus of claim 10, wherein said planar gripping means are of semicircular profile.

12. The apparatus of claim 1, wherein said means for gripping comprise gripping loops each defined by a loop of wire, said gripping loops diverging from one another as they extend proximally.

13. The apparatus of claim 12, further including tubular plastic sleeves enveloping said wire of said gripping loops throughout a major extent thereof.

14. The apparatus of claim 12, wherein said gripping loops tilt slightly laterally outwardly from bottom to top thereof.

15. The apparatus of claim 1, wherein said biasing means comprises a spring also formed from said single piece of wire and located between said two members.

16. The apparatus of claim 15, wherein said spring comprises a coil spring having at least one 360°

coil loop, said at least one coil loop oriented substantially parallel to said members.

17. The apparatus of claim 15, wherein said gripping means comprise a wire loop on each of said members, said wire loops each having a proximal bight portion and first and second legs extending distally and crossing at an acute angle to close said loop.

18. The apparatus of claim 17, wherein said first legs are lower than said second legs prior to said crossing, and extend distally thereafter, said first legs then turn transversely laterally inwardly and then extend downwardly in a mutually parallel relationship, said downward extent of said first legs comprising said clamping elements.

19. The apparatus of claim 18, wherein said second legs define, distally of said crossing, transversely-extending yokes through which said distally extending first legs of the same member pass between said crossings and said transverse laterally inward turns of said first legs.

20. The apparatus of claim 19, wherein said second legs extend proximally from the inner ends of said yokes into said coil spring.

21. The apparatus of claim 20, wherein said coil spring comprises one 360°

coil loop having first and second vertically overlapped or superimposed ends at the proximal end of said coil, said superimposed ends comprising approximately 180°

arcs into which said second legs extend proximally from said yokes.

22. The apparatus of claim 19, wherein said first legs extend slightly laterally outwardly between said crossings and the points at which said first legs pass through said yokes, and then turn slightly laterally inwardly to the points at which the first legs turn transversely laterally inwardly.

23. The apparatus of claim 1, wherein said pointed distal ends comprise trocar points.