Surgical clip

• US 5,439,479 A
• Filed: 01/04/1994
• Issued: 08/08/1995
• Est. Priority Date: 12/20/1990
• Status: Expired due to Term

• Current Assignee: United States Surgical Corporation (Medtronic Plc)
• Original Assignee: United States Surgical Corporation (Medtronic Plc)
• Inventors: Shichman, Daniel, Zvenyatsky, Boris
• Primary Examiner(s): Jackson, Gary
• Application Number:
  US08/177,639
• Time in Patent Office: 581 Days
• Field of Search: 606/151, 606/216, 606/219, 606/220, 411/457, 411/920
• US Class Current: 606/220
• CPC Class Codes: A61B 17/0643 with separate closing member, e.g. for interlocking with staple
• CPC Class Codes: Y10S 411/92 Staple

Abstract

A surgical clip which comprises a staple having a central portion and first and second legs extending from said central portion. A retainer is provided having an opening dimensioned for passage of an end portion of each of said legs when the legs are bent from an open position to a closed position. A ratchet mechanism is provided in the form of a plurality of teeth disposed on the legs adapted to be engaged by a pawl of said retainer.

Claims

1. A surgical clip assembly, comprising:

a staple having a central portion and first and second legs extending from said central portion, each said leg having gripping means;

a retainer spaced apart from said central portion and having a central opening dimensioned for passage and retention of an end portion of both said legs, every dimension of said retainer being less than the length of said staple central portion, the length of said staple central portion being measured as the distance between the exterior side surfaces of said staple legs in the open position; and

means or said retainer for engaging said gripping means to retain said end portion of said legs in said retainer.

2. A surgical clip assembly as recited in claim 1, wherein said gripping means comprises at least one tooth.

3. A surgical clip assembly as recited in claim 2, wherein said holding means comprise a pawl configured to engage said at least one tooth.

4. A surgical clip assembly as recited in claim 1, wherein said staple and retainer are composed of a resorbable material.

5. A surgical clip assembly as recited in claim 4, wherein said staple and retainer are composed of a material selected from the group consisting of polyglycolide, polylactide and glycolide/lactide copolymer.

6. A surgical clip assembly as recited in claim 1, wherein said retainer is made of a resilient material and dimensioned to stretch upon insertion of said legs and spring back to its original position after such insertion.

7. A surgical clip assembly as recited in claim 6, wherein said retainer comprises a plurality of slots to maintain resiliency.

8. A surgical clip assembly as recited in claim 1, wherein said legs are retained in overlaying abutting relationship.

9. A surgical clip assembly comprising:

a staple having a central portion and first and second legs extending from said central portion, each leg having gripping means formed thereon; and

a retainer spaced apart from said central portion, every dimension of said retainer being less than the greatest length of said staple central portion, said retainer having a passageway dimensioned to receive said first and second legs and further having holding means to secure said legs therewithin.

10. A surgical clip assembly as recited in claim 9, wherein said holding means comprises an upper pawl disposed on an upper inside surface and a lower pawl disposed on a lower inside surface, said upper pawl engaging said first leg portion when inserted in a first direction through said passageway and said lower pawl engaging said second leg portion when inserted in a second direction through said passageway.

11. A surgical clip assembly comprising:

a staple having a central portion and a pair of legs joined at a proximal end by said central portion, said legs each having an outer edge and a distal end portion and further being movable from an open position in which said legs are spaced apart to a closed position wherein said legs are bent at an angle to extend inwardly towards each other; and

a retainer having an opening to receive said legs when in said closed position, every dimension of said retainer having a length less than the distance between the exterior side surfaces of the staple legs in said open position, said retainer receiving said legs only in a direction substantially parallel to said central portion.

12. A surgical clip assembly as recited in claim 11, wherein said retainer is made of a resilient material and dimensioned to stretch upon insertion of said legs and spring back after such insertion.

13. A surgical clip assembly as recited in claim 12, wherein said clip further comprises a ratchet mechanism to retain said distal end portions of said legs within said retainer.

14. A surgical clip assembly as recited in claim 13, wherein in said second position one of said legs is disposed above the other leg.

15. A surgical clip assembly as recited in claim 14, wherein the height of said opening of said retainer is less than the combined thickness of said distal end portions of said legs.

16. A surgical clip assembly as recited in claim 15, wherein the width of said opening is less than the width of each of said legs.

17. A surgical clip assembly as recited in claim 14, wherein in said second position a lower surface of said first leg abuts an upper surface of said second leg.

18. A surgical clip assembly as recited in claim 16, wherein said ratchet mechanism comprises a plurality of teeth disposed proximally of a distal tip of each of said legs and has a lower pawl to engage said teeth of said first leg and an upper pawl to engage said teeth of said second leg.

19. A surgical clip assembly as recited in claim 13, wherein said legs enter through one end of said opening and emerge from the opposite end of said opening.

20. A surgical staple as recited in claim 11, wherein in said closed position, the distal end portion of each of said legs is substantially parallel to said central portion of said staple.

21. A surgical clip assembly comprising:

a staple having a central portion and first and second legs extending from said central portion to a first and second distal end portion, said legs being flexible to move from an open position to a closed position; and

a retainer having at least one passageway extending substantially parallel to said central portion and dimensioned to receive said legs when moved inwardly to said closed position, wherein when said staple legs are deformed to said closed position, said retainer contacts only those portions of said staple legs which are in substantial parallel alignment with said staple central portion.