Surgical Applicator for U-shaped clips

• US 5,895,394 A
• Filed: 03/18/1997
• Issued: 04/20/1999
• Est. Priority Date: 09/24/1996
• Status: Expired due to Term

• Current Assignee: Aesculap AG (B. Braun Holding GmbH & Co. KG)
• Original Assignee: Aesculap AG (B. Braun Holding GmbH & Co. KG)
• Inventors: Nesper, Markus, Weisshaupt, Dieter, Mayenberger, Rupert, Kienzle, Karl-Ernst
• Primary Examiner(s): Jackson, Gary
• Application Number:
  US08/819,305
• Time in Patent Office: 763 Days
• Field of Search: 606/142, 606/143
• US Class Current: 606/143
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery

Abstract

In a surgical applicator for U-shaped clips comprising a handle, a tubular shaft adjoining the handle, a forceps-type applicator tool at the free end of the tubular shaft, a closing mechanism for the applicator tool arranged in the tubular shaft and actuatable from the handle, an advancing mechanism for the clips arranged in the tubular shaft and also actuatable from the handle, two separate actuating elements on the handle, each being movable between a rest position and a work position, one of the actuating elements being associated with the closing mechanism and the other with the advancing mechanism, in order to improve the safety measures and the actuating aids, it is proposed that a locking member be mounted on one of the actuating elements and enter into operative connection with the other actuating element, thereby to prevent each of the two actuating elements from moving so long as the respective other actuating element is not in its rest position.

Claims

1. A surgical applicator for U-shaped clips, comprising:

a handle;

a tubular shaft adjoining said handle;

a forceps-type applicator tool at the free end of said tubular shaft;

a closing mechanism for said applicator tool arranged in said tubular shaft and actuatable from said handle;

an advancing mechanism for said clips arranged in said tubular shaft and also actuatable from said handle;

two separate actuating elements on said handle which are each movable between a rest position and a work position, one of said actuating elements being associated with said closing mechanism and the other with said advancing mechanism; and

a locking member mounted on one of said actuating elements which enters into an operative connection with said other actuating element, thereby preventing each of said two actuating elements from moving so long as the respective other actuating element is not in its rest position;

wherein;

said locking member on said one actuating element is movable between two positions, namely a first release position in which, with said other actuating element in its rest position, said one actuating element is freely movable, and a lock position in which said one actuating element, in any position of said other actuating element, is locked in its movement by said locking member contacting said other actuating element.

2. The surgical applicator of claim 1, wherein:

said locking member is movable from the release position to the lock position by the movement of said one actuating element from the rest position to the work position and, at the end of this movement, by contact with said other actuating element.

3. The surgical applicator of claim 2, further comprising:

a spring detent means for releasably fixing said locking member in both the release position and the lock position.

4. The surgical applicator of claim 3, wherein:

said locking member carries a projection adapted to be pressed in resiliently and having on one side thereof a flat slide flank, and on the other side thereof a steep retaining flank for a part of said other actuating element sliding along said projection;

said projection only interacts with said sliding part with said locking member in the lock position; and

said projection is arranged such that said sliding part of said other actuating element contacts said steep retaining flank when said one actuating element is in its rest position.

5. The surgical applicator of claim 3, wherein:

said locking member is movable from the lock position to the release position by the movement of said other actuating element from the rest position to the work position and, at the end of this movement, by contact with said other actuating element.

6. The surgical applicator of claim 2, further comprising:

a reversible freewheel mechanism associated with said one actuating element;

said freewheel mechanism allowing movement of said actuating element in one direction only, and the direction of movement of said freewheel mechanism only being reversible when said actuating element has reached the end points of its path of movement.

7. The surgical applicator of claim 2, wherein:

said locking member carries a projection adapted to be pressed in resiliently and having on one side thereof a flat slide flank, and on the other side thereof a steep retaining flank for a part of said other actuating element sliding along said projection;

said projection only interacts with said sliding part with said locking member in the lock position; and

said projection is arranged such that said sliding part of said other actuating element contacts said steep retaining flank when said one actuating element is in its rest position.

8. The surgical applicator of claim 2, wherein:

said locking member is movable from the lock position to the release position by the movement of said other actuating element from the rest position to the work position and, at the end of this movement, by contact with said other actuating element.

9. The surgical applicator of claim 1, further comprising:

a reversible freewheel mechanism associated with said one actuating element;

said freewheel mechanism allowing movement of said actuating element in one direction only, and the direction of movement of said freewheel mechanism only being reversible when said actuating element has reached the end points of its path of movement.

10. The surgical applicator of claim 9, wherein:

said locking member is movable from the lock position to the release position by the movement of said other actuating element from the rest position to the work position and, at the end of this movement, by contact with said other actuating element.

11. The surgical applicator of claim 1, wherein:

said locking member carries a projection adapted to be pressed in resiliently and having on one side thereof a flat slide flank, and on the other side thereof a steep retaining flank for a part of said other actuating element sliding along said projection;

said projection only interacts with said sliding part with said locking member in the lock position; and

said projection is arranged such that said sliding part of said other actuating element contacts said steep retaining flank when said one actuating element is in its rest position.

12. The surgical applicator of claim 11, wherein:

said locking member is movable from the lock position to the release position by the movement of said other actuating element from the rest position to the work position and, at the end of this movement, by contact with said other actuating element.

13. The surgical applicator of claim 1, wherein:

said locking member is movable from the lock position to the release position by the movement of said other actuating element from the rest position to the work position and, at the end of this movement, by contact with said other actuating element.

14. The surgical applicator of claim 1, wherein:

said one actuating element is associated with said advancing mechanism and said other actuating element with said closing mechanism.

15. The surgical applicator of claim 1, wherein:

said actuating elements are designed as swivel levers on said handle so as to be rotatable about an axis extending transversely to the longitudinal axis of said tubular shaft.

16. A surgical applicator for U-shaped clips, comprising:

a handle;

a tubular shaft adjoining said handle;

a forceps-type applicator tool at the free end of said tubular shaft;

a closing mechanism for said applicator tool arranged in said tubular shaft and actuatable from said handle;

an advancing mechanism for said clips arranged in said tubular shaft and also actuatable from said handle;

two separate actuating elements on said handle which are each movable between a rest position and a work position, one of said actuating elements being associated with said closing mechanism and the other with said advancing mechanism;

a locking member mounted on one of said actuating elements which enters into an operative connection with said other actuating element, thereby preventing each of said two actuating elements from moving so long as the respective other actuating element is not in its rest position; and

a reversible freewheel mechanism associated with said one actuating element;

said freewheel mechanism allowing movement of said actuating element in one direction only, and the direction of movement of said freewheel mechanism only being reversible when said actuating element has reached the end points of its path of movement.

17. The surgical applicator of claim 16, wherein:

said locking member carries a projection adapted to be pressed in resiliently and having on one side thereof a flat slide flank, and on the other side thereof a steep retaining flank for a part of said other actuating element sliding along said projection;

said projection only interacts with said sliding part with said locking member in the lock position; and

said projection is arranged such that said sliding part of said other actuating element contacts said steep retaining flank when said one actuating element is in its rest position.

18. The surgical applicator of claim 16, wherein:

said locking member is movable from the lock position to the release position by the movement of said other actuating element from the rest position to the work position and, at the end of this movement, by contact with said other actuating element.

19. The surgical applicator of claim 16, wherein:

said one actuating element is associated with said advancing mechanism and said other actuating element with said closing mechanism.

20. The surgical applicator of claim 16, wherein:

said actuating elements are designed as swivel levers on said handle so as to be rotatable about an axis extending transversely to the longitudinal axis of said tubular shaft.

21. A surgical applicator for U-shaped clips, comprising:

a handle;

a tubular shaft adjoining said handle;

a forceps-type applicator tool at the free end of said tubular shaft;

a closing mechanism for said applicator tool arranged in said tubular shaft and actuatable from said handle;

an advancing mechanism for said clips arranged in said tubular shaft and also actuatable from said handle;

two separate actuating elements on said handle which are each movable between a rest position and a work position, one of said actuating elements being associated with said closing mechanism and the other with said advancing mechanism; and

a locking member mounted on one of said actuating elements which enters into an operative connection with said other actuating element, thereby preventing each of said two actuating elements from moving so long as the respective other actuating element is not in its rest position, wherein;

said locking member is a disc mounted on said one actuating element for rotation about an axis extending parallel to the axis of rotation of said first actuating element between the release position and the lock position.

22. The surgical applicator of claim 21, wherein:

said disc has two edge recesses lying alongside each other in which a detent member displaceable on said one actuating element in the direction towards the axis of rotation of said disc and resiliently pressed against the edge of said disc engages.

23. The surgical applicator of claim 22, wherein:

said disc is arranged in a recess of said one actuating element, said recess being arranged on the part of said one actuating element located opposite the handle part of said one actuating element and being open at the side towards said other actuating element.

24. The surgical applicator of claim 23, wherein:

said recess is partially closed by a cover plate.

25. The surgical applicator of claim 24, wherein:

said disc has an angular projection adapted to be pressed in resiliently with an edge having two edge sections; and

a projection of said other actuating element is arranged beside said edge and runs along one of said edge sections when said one actuating element, with said other actuating element in its rest position, is moved from its rest position to its work position, and along the other of said edge sections when said other actuating element, with said one actuating element in its rest position, is moved from the rest position to the work position.

26. The surgical applicator of claim 22, wherein:

said disc has an angular projection adapted to be pressed in resiliently with an edge having two edge sections; and

a projection of said other actuating element is arranged beside said edge and runs along one of said edge sections when said one actuating element, with said other actuating element in its rest position, is moved from its rest position to its work position, and along the other of said edge sections when said other actuating element, with said one actuating element in its rest position, is moved from the rest position to the work position.

27. The surgical applicator of claim 23, wherein:

said disc has an angular projection adapted to be pressed in resiliently with an edge having two edge sections; and

a projection of said other actuating element is arranged beside said edge and runs along one of said edge sections when said one actuating element, with said other actuating element in its rest position, is moved from its rest position to its work position, and along the other of said edge sections when said other actuating element, with said one actuating element in its rest position, is moved from the rest position to the work position.

28. The surgical applicator of claim 21, wherein:

said disc has an angular projection adapted to be pressed in resiliently with an edge having two edge sections; and

a projection of said other actuating element is arranged beside said edge and runs along one of said edge sections when said one actuating element, with said other actuating element in its rest position, is moved from its rest position to its work position, and along the other of said edge sections when said other actuating element, with said one actuating element in its rest position, is moved from the rest position to the work position.

29. The surgical applicator of claim 28, wherein:

said edge sections are of arcuate shape.

30. The surgical applicator of claim 28, wherein:

said edge sections meet essentially at a right angle; and

the path of movement of said projection on said other actuating element, upon swivel movement thereof, is essentially perpendicular to said one edge section and parallel to said other edge section.

31. The surgical applicator of claim 28, wherein:

said projection is mounted on said one actuating element for rotation about the same axis of rotation as said disc and is rotated relative to said disc by a swivel spring into a position protruding over said disc.

32. The surgical applicator of claim 31, wherein:

said swivel spring is a spring rod or a leaf spring.

33. The surgical applicator of claim 31, wherein:

said projection is in the form of a lamina and is received in a central recess of said disc.

34. The surgical applicator of claim 28, wherein:

said disc has stop faces which said projection of said other actuating element contacts; and

said projection swivels said disc from the release position to the lock position and vice versa when said one or said other actuating element is in the work position.

35. The surgical applicator of claim 28, wherein:

said projection on said other actuating element is a pin projecting sideways.

36. The surgical applicator of claim 21, wherein:

said one actuating element is associated with said advancing mechanism and said other actuating element is associated with said closing mechanism.

37. The surgical applicator of claim 21, wherein:

said actuating elements are designed as swivel levers on said handle so as to be rotatable about an axis extending transversely to the longitudinal axis of said tubular shaft.