Occlusion clamp and occlusion clamp applicator

• US 5,928,251 A
• Filed: 09/18/1997
• Issued: 07/27/1999
• Est. Priority Date: 09/18/1997
• Status: Expired due to Term

• Current Assignee: United States Surgical Corporation (Medtronic Plc)
• Original Assignee: United States Surgical Corporation (Medtronic Plc)
• Inventors: DeSantis, Robert J., Yagami, Richard, Aranyi, Cathy
• Primary Examiner(s): Jackson, Gary
• Assistant Examiner(s): Trinh, Vikki
• Application Number:
  US08/932,685
• Time in Patent Office: 677 Days
• Field of Search: 606/142, 606/148, 606/151, 606/157, 606/158, 606/205-208, 227/901, 227/902
• US Class Current: 606/142
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/1227 Spring clips
• CPC Class Codes: A61B 17/128 for applying or removing clamps or clips
• CPC Class Codes: A61B 17/30 Surgical pincettes without pivotal connectionsfor holding suture needles or materials A61B17/0483; wound clamps A61B17/08 ; hand-held gripping tools without pivotal connections in general B25B9/02
• CPC Class Codes: A61B 2017/00243 cardiac

Abstract

An occlusion clamp and an applicator for applying the occlusion clamp to body tissue is provided. The occlusion clamp applicator includes a housing having a proximal end having a first opening, a distal end having a second opening, and a pair of finger gripping members. The housing defines a channel which extends between the first and second openings. A plunger is partially positioned within the channel and extends through the first opening. The distal end of the plunger is operably connected to a jaw mechanism which is also slidably positioned within the channel. The jaw mechanism includes a pair of resilient shank portions, each having a distally located jaw member which extends through the second housing opening. Each shank portion also includes a cam surface which engages the distal end of the channel when the plunger is retracted to move the jaw members from a position in spaced relation with each other to a position relatively close in relation with each other. Each jaw member includes a slot having converging sidewalls which intersect at an apex. An occlusion clamp is supported between the jaw members and includes a base portion and a pair of legs extending therefrom. Each leg includes a pair of parallel proximal portions, a pair of cross-over portions, and a pair of clamping portions. Each proximal portion includes a dimpled section configured to receive the sidewalls of the slot in the jaw members. When the jaw members are in the position in spaced relation with each other, the apex protrudes slightly into the dimpled section of the clamp to prevent inadvertent separation of the clamp and the applicator.

Claims

1. An occlusion clamp applicator comprising:

a housing having a proximal end and a distal end, the housing defining a channel therein;

a plunger positioned within the channel and extending from the proximal end of the housing, the plunger being longitudinally movable between retracted and advanced positions;

a plunger positioned within the channel and extending from the proximal end of the housing, the plunger being longitudinally movable between retracted and advanced positions;

a jaw mechanism having first and second resilient shank portions and including first and second jaw members, one of the jaw members being supported at a distal end of each of the resilient shank portions, the jaw mechanism being positioned at least partially within the channel and being operably connected and longitudinally movable with the plunger; and

an engaging surface operably associated with the jaw mechanism and positioned to move the jaw members between a position in spaced relation with each other and a position in relative close relation with each other in response to movement of the plunger between the retracted and advanced positions.

2. An occlusion clamp applicator according to claim 1, wherein at least one sidewall of the channel defines the engaging surface.

3. An occlusion clamp applicator according to claim 2, wherein the at least one sidewall of the channel defining the engaging surface tapers outwardly towards the distal end of the channel.

4. An occlusion clamp applicator according to claim 3, wherein the at least one sidewall includes a pair of sidewalls, each of the sidewalls tapering outwardly towards the distal end of the channel.

5. An occlusion clamp applicator according to claim 1, further including a biasing member operably engaging the plunger, the biasing member urging the plunger toward the retracted position.

6. An occlusion applicator according to claim 5, wherein the biasing member includes a coil spring.

7. An occlusion clamp applicator according to claim 1, wherein the housing includes a pair of finger gripping members positioned at a proximal end thereof.

8. An occlusion clamp applicator according to claim 7, wherein the plunger includes an actuator member supported at a proximal end thereof.

9. An occlusion clamp applicator according to claim 1, wherein the jaw members each include a slot configured to support a clamp therebetween.

10. An occlusion clamp applicator according to claim 9, wherein each slot includes angled sidewalls which intersect at an apex.

11. An occlusion clamp applicator comprising:

a) a base portion having a longitudinal axis and first and second ends;

b) a proximal portion extending from each end of the base portion at an angle substantially perpendicular to the longitudinal axis of the base portion, each proximal portion extending parallel to the other proximal portion;

c) a cross-over portion extending from the distal end of each of the proximal portions; and

d) a clamping portion extending from the distal end of each cross-over portion.

12. A resilient occlusion clamp according to claim 11, wherein the distal end of each clamping portion includes a tissue penetrating tip.

13. A resilient occlusion clamp according to claim 11, wherein each proximal portion includes a dimpled section configured to receive a portion of a jaw member of an occlusion clamp applicator.

20. A surgical instrument according to claim 11, wherein the housing includes a pair of finger gripping members positioned at a proximal end thereof.

21. A surgical instrument according to claim 20, wherein the plunger includes an actuator member supported at a proximal end thereof.

22. A surgical instrument according to claim 11, wherein the jaw members each include a recess configured to support a clamp therebetween.

23. A surgical instrument according to claim 22, wherein each recess includes angled sidewalls which intersect at an apex.

14. A surgical instrument comprising:

a) an occlusion clamp applicator including;

i) a housing having a proximal end and a distal end, the housing defining a channel therein;

ii) a plunger positioned within the channel and extending from the proximal end of the housing, the plunger being longitudinally movable between retracted and advanced positions;

iii) a jaw mechanism having first and second resilient shank portions and including first and second jaw members, one of the jaw members being supported at a distal end of each of the resilient shank portions, the jaw mechanism being positioned at least partially within the channel and being operably connected and longitudinally movable with the plunger; and

iv) an engaging surface operably associated with the jaw mechanism and positioned to move the jaw members between a position in spaced relation with each other and a position in relative close relation with each other in response to movement of the plunger between the retracted and advanced positions;

b) a resilient occlusion clamp supported by the jaw members, the occlusion clamp including;

i) a base portion having first and second ends;

ii) a proximal portion extending from each end of the base portion, each proximal portion being substantially perpendicular to the base portion and extending parallel to the other proximal portion;

iii) a cross-over portion extending from the distal end of each of the proximal portions; and

iv) a clamping portion extending from the distal end of each cross-over portion.

15. A surgical instrument according to claim 14, wherein at least one sidewall of the channel defines the engaging surface.

16. A surgical instrument according to claim 15, wherein the at least one sidewall of the channel defining the engaging surface tapers outwardly towards the distal end of the channel.

17. A surgical instrument according to claim 16, wherein the at least one sidewall includes a pair of sidewalls, each of the sidewalls tapering outwardly towards the distal end of the channel.

18. A surgical instrument according to claim 14, further including a biasing member operably engaging the plunger, the biasing member urging the plunger toward the retracted position.

19. A surgical instrument according to claim 18, wherein the biasing member includes a coil spring.

24. A surgical instrument according to claim 14, wherein the distal end of each clamping portion includes a sharpened tip.

25. A surgical instrument according to claim 14, wherein each proximal portion includes a dimpled section configured to receive a portion of one of the jaw members of the occlusion clamp applicator.