Surgical clip having a longitudinal opening through which clamped tissue protrudes

• US 5,487,746 A
• Filed: 11/23/1994
• Issued: 01/30/1996
• Est. Priority Date: 11/23/1994
• Status: Expired due to Fees

• Current Assignee: George W. Yu, Holtgrewe H. Logan
• Original Assignee: George W. Yu, Holtgrewe H. Logan
• Inventors: Yu, George W., Holtgrewe, H. Logan
• Primary Examiner(s): Jackson, Gary
• Application Number:
  US08/347,081
• Time in Patent Office: 433 Days
• Field of Search: 606/143, 606/151, 606/157, 606/158, 24/115 A, 24/326, 24/703.1
• US Class Current: 606/151
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206
• CPC Class Codes: Y10T 24/3427 Clasp
• CPC Class Codes: Y10T 24/398 Bendable, ductible
• CPC Class Codes: Y10T 24/49 Fastener destructively secured by reshaping distortion force [e.g., ductile fastener]

Abstract

A surgical clip having a double-leg side and a single-leg side. When the surgical clip is closed, the movement of the single-leg side towards the double-leg side displaces the tissue being clamped through a longitudinal opening between the legs forming the double-leg side. In order to increase the gripping area of the clip, the gripping surface of the single leg is a rounded wedge shape with smooth edges (not sharp) which are parallel to the inboard side of the double legs. The rounded wedge shape is used in order to avoid cutting the clamped tissue. When the surgical clip engages with tissue to be clamped, a plane of the tissue is displaced at the clamping region which increases the force needed to displace the clip from the tissue being clamped.

Claims

1. A surgical clip comprising:

a first side having a first leg; and

a second side having a second leg and a third leg connected to each other at a joining region at which the first leg is joined to the second and third legs, the second and third leg defining a longitudinal opening therebetween and extending through the second side;

wherein when tissue between the first leg of the first side and the second and the third legs of the second side is clamped by the surgical clip, the first leg pushes a portion of the tissue through the longitudinal opening, and at least a portion of the first leg intersects a plane defined by the second and third legs.

2. A surgical clip according to claim 1, wherein:

when the tissue is clamped by the surgical clip, the first leg is in a plane different than a plane defined by the second and third legs.

3. A surgical clip according to claim 1, wherein:

the first leg is shorter than a length between the joining region and an end of the longitudinal opening which is disposed away from the joining region.

4. A surgical clip according to claim 1, wherein:

the first leg has a width which is narrower than a width of the longitudinal opening.

5. A surgical clip according to claim 1, wherein:

the first leg is shorter than a length between the joining region and an end of the longitudinal opening which is disposed away from the joining region; and

the first leg has a width which is narrower than a width of the longitudinal opening.

6. A surgical clip according to claim 5, wherein:

when the tissue is clamped by the surgical clip, a portion of the first leg extends into and through the longitudinal opening.

7. A surgical clip according to claim 1, wherein:

clip is displaced to another plane by the surgical clip, the plane of the tissue is displaced by an interaction of the first leg with the second and third legs.

8. A surgical clip according to claim 1, wherein:

the second leg and third leg are connected both at the region where the second and third legs are connected to the first leg, and at ends of the second and third legs which are disposed away from the region at which the second and third legs are connected to the first leg.

9. A surgical clip according to claim 1, wherein:

the first leg includes a raised ridge for dividing a surface for gripping the tissue longitudinally into two halves.

10. A surgical clip according to claim 9, wherein:

one half of the first leg engages with and corresponds to the second leg, and the other half of the first leg engages with and corresponds to the third leg; and

surfaces on each of the second and third legs for gripping the tissue are angled to be parallel to the corresponding surface of the first leg.

11. A surgical clip according to claim 1, wherein:

edges of gripping surfaces of each of the first, second, and third legs are square.

12. A surgical clip according to claim 1, wherein:

a width of the first side of the surgical clip is greater than a width of the longitudinal opening; and

a tissue gripping side of the first leg includes a raised ridge disposed along a length of the first leg.

13. A surgical clip according to claim 1, wherein:

a locking of the surgical clip in a closed state is a bending of the surgical clip.

14. A surgical clip according to claim 1, wherein:

a locking of the surgical clip in a closed state is a bending of the joining region when the first side and second side are moved towards each other.

15. A surgical clip according to claim 1, wherein:

said surgical clip is a unitary device.

16. A surgical clip according to claim 1, wherein:

said clip comprises material selected from one of stainless steel and titanium.

17. A surgical clip for clamping tissue, the clip having an open state and a closed state, comprising:

first and second sides joined together at their proximal ends at a hinged region,

said first side having a longitudinal opening therethrough to define first and second legs which are joined at their proximal ends to each other,

said second side having a longitudinal protruding zone that defines a third leg,

said third leg being spaced from said first and second legs when the clip is in the open state,

said third leg extending into said longitudinal opening when the clip is in the closed state,

wherein when the clip is in the closed state the tissue clamped between said third leg and said first and second legs extends through said longitudinal opening,

and tissue held in said closed state by the clip is compressed between said first leg and said second leg as well as between said first leg and said third leg.

18. The surgical clip of claim 17, wherein:

said third leg has a cross-sectional area that is approximately triangular to provide first and second tissue contact walls, and wherein said first and third legs have inboard walls that provide third and fourth tissue contact walls,

the spatial orientation of said third and fourth walls matching the orientation of said first and second walls respectively when in said closed state,

said clip when moved from its open state to its closed state providing a wedging action to force tissue through said longitudinal opening prior to the end state compression of tissue between the walls of said third leg and the facing walls of said first and second legs.

19. The surgical clip of claim 17, wherein:

said clip is a unitary device.

20. The surgical clip of claim 17, wherein:

said clip is composed of materials from the group consisting of surgical stainless steel and titanium.

21. The surgical clip of claim 17, wherein:

said first and second legs are joined to each other at their distal ends.

22. The surgical clip of claim 17, wherein:

said third leg extends into and through said longitudinal opening when the clip is in its closed state.