Medical forceps with two independently moveable jaw parts

• US 6,673,092 B1
• Filed: 08/24/2000
• Issued: 01/06/2004
• Est. Priority Date: 07/25/1998
• Status: Active Grant

• Current Assignee: Karl Storz Se & Co. Kg
• Original Assignee: Karl Storz Se & Co. Kg
• Inventors: Bacher, Uwe
• Primary Examiner(s): Woo, Julian W.
• Assistant Examiner(s): ROBERTS, PAUL A
• Application Number:
  US09/644,996
• Time in Patent Office: 1,230 Days
• Field of Search: 606/205-208, 600/104, 813/45--51
• US Class Current: 606/205
• CPC Class Codes: A61B 17/2909 Handles
• CPC Class Codes: A61B 17/295 combined with cutting implements
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 2017/00353 one mechanical instrument performing multiple functions, e.g. cutting and grasping
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2017/292 connection of actuating rod to handle, e.g. ball end in recess
• CPC Class Codes: A61B 2017/2938 Independently actuatable jaw members, e.g. two actuating rods
• CPC Class Codes: A61B 2090/0813 Accessories designed for easy sterilising, i.e. re-usable

Abstract

A medical forceps is provided with two independently moveable jaw parts at the distal end. The forceps comprise a shaft with two rods extending axially therein, the rods being arranged adjacent to one another and being axially displaceable independently of one another. The first rod is joined to the first jaw part and the second rod to the second jaw part. The forceps further comprise a handle at the proximal end with two actuator elements, wherein the first actuator element is joined to the first rod and the second actuator element to the second rod. The first rod and the second rod each comprise a coupling element at their proximal ends. The first actuator element and the second actuator element each comprise a substantially complementary coupling element at their distal ends, such that the coupling elements of the rods are engageable in force-locking, but releasable manner with the coupling elements of the actuator elements by axially pushing the rods and the actuator elements together and/or by commonly rotating the two rods about a longitudinal axis of the shaft.

Claims

1. Medical forceps, comprising:

a shaft having a distal end and a proximal end;

a first and a second jaw part disposed at said distal end of said shaft and being movable independently from each other;

a handle disposed at said proximal end of said shaft having a first and a second actuator element;

a first and a second rod extending through said shaft and being arranged adjacent to one another and being axially displaceable independently from one another, said first rod being joined to said first jaw part and to said first actuator element and said second rod being joined to said second jaw part and to said second actuator element,

wherein said first rod and said second rod each comprise a coupling element at a proximal end of said first and second rod, said first actuator element and said second actuator element each comprise a coupling element at a distal end of said first and second actuator element, said coupling elements of said actuator element being substantially complementary to said coupling elements of said rods such that said coupling elements of said rods are engageable in force-locking, but releasable manner with said coupling elements of said actuator elements by axially pushing said rods and said actuator elements together.

2. Forceps of claim 1, wherein said coupling elements of said rods and said coupling elements of said actuator elements are configured such that they are disengageable by a rotation of said rods about a longitudinal axis of said shaft.

3. Forceps of claim 1, wherein said coupling elements of said rods become lockingly engaged with said coupling elements of said actuator elements by actuating said actuator elements and/or by actuating said jaw parts.

4. Forceps of claim 1, wherein said coupling elements of said rods and/or said coupling elements of said actuator elements comprise engagement slopes.

5. Forceps of claim 4, wherein said rods are slightly elastically bendable at said proximal ends thereof.

6. Forceps of claim 1, wherein said rods are restricted against undesired rotation when said coupling elements of said rods are engaged with said coupling elements of said actuator elements.

7. Forceps of claim 1, wherein said shaft is joined to said handle in detachable manner.

8. Forceps of claim 7, wherein said shaft is joined to said handle by means of a locking mechanism arranged on said handle.

9. Forceps of claim 8, wherein said locking mechanism secures said shaft against rotation.

10. Forceps of claim 1, wherein said shaft is removable from said rods and wherein said rods are secured against rotation with said shaft in an assembled condition.

11. Forceps of claim 1, wherein said coupling elements of said rods are formed as heads and said coupling elements of said actuator elements are formed as substantially complementary bore holes, which are open on a distal front side of said actuator elements and are open to a side, or vice versa.

12. Forceps of claim 11, wherein said bore holes are formed as ball sockets, and said side opening of said first ball socket is directed in said opposite direction with respect to said side opening of said second ball socket.

13. Forceps of claim 1, wherein said coupling elements of said rods are engageable in force-locking, but releasable manner with said coupling elements of said actuator elements by commonly rotating said rods about a longitudinal axis of said shaft.

14. Medical forceps, comprising:

a shaft having a distal end and a proximal end;

a first and a second jaw part disposed at said distal end of said shaft and being movable independently from each other;

a handle disposed at said proximal end of said shaft having a first and a second actuator element;

a first and a second rod extending through said shaft and being arranged adjacent to one another and being axially displaceable independently from one another, said first rod being joined to said first jaw part and to said first actuator element and said second rod being joined to said second jaw part and to said second actuator element,

wherein said first rod and said second rod each comprise a coupling element at a proximal end of said first and second rod, said first actuator element and said second actuator element each comprise a coupling element at a distal end of said first and second actuator element, said coupling elements of said actuator element being substantially complementary to said coupling elements of said rods such that said coupling elements of said rods are engageable in force-locking, but releasable manner with said coupling elements of said actuator elements by commonly rotating said rods about a longitudinal axis of said shaft.

15. Forceps of claim 14, wherein said coupling elements of said rods and said coupling elements of said actuator elements are configured such that they are disengageable by a rotation of said rods about said longitudinal axis.

16. Forceps of claim 14, wherein said coupling elements of said rods become lockingly engaged with said coupling elements of said actuator elements by actuating said actuator elements and/or by actuating said jaw parts.

17. Forceps of claim 14, wherein said coupling elements of said rods and/or said coupling elements of said actuator elements comprise engagement slopes.

18. Forceps of claim 17, wherein said rods are slightly elastically bendable at said proximal ends thereof.

19. Forceps of claim 14, wherein said rods are restricted against undesired rotation when said coupling elements of said rods are engaged with said coupling elements of said actuator elements.

20. Forceps of claim 14, wherein said shaft is joined to said handle in detachable manner.

21. Forceps of claim 20, wherein said shaft is joined to said handle by means of a locking mechanism arranged on said handle.

22. Forceps of claim 21, wherein said locking mechanism secures said shaft against rotation.

23. Forceps of claim 14, wherein said shaft is removable from said rods and wherein said rods are secured against rotation with said shaft in an assembled condition.

24. Forceps of claim 14, wherein said coupling elements of said rods are formed as heads and said coupling elements of said actuator elements are formed as substantially complementary bore holes, which are open on a distal front side of said actuator elements and are open to a side, or vice versa.

25. Forceps of claim 24, wherein said bore holes are formed as ball sockets, and said side opening of said first ball socket is directed in said opposite direction with respect to said side opening of said second ball socket.

26. Forceps of claim 14, wherein said coupling elements of said rods are engageable in force-locking, but releasable manner with said coupling element of said actuator elements by axially pushing said rods and said actuator elements together.