Surgical Instrument

• US 20090209998A1
• Filed: 03/02/2007
• Published: 08/20/2009
• Est. Priority Date: 03/17/2006
• Status: Active Grant

• Current Assignee: Karl Storz Se & Co. Kg
• Original Assignee: Heinrich Widmann
• Inventors: Widmann, Heinrich
• Granted Patent: US 8,048,106 B2
• Time in Patent Office: Days
• US Class Current: 606/207
• CPC Class Codes: A61B 10/06 Biopsy forceps , e.g. with cup-shaped jaws
• CPC Class Codes: A61B 17/1611 the two jaw elements being integral with respective elongate shaft elements
• CPC Class Codes: A61B 17/2909 Handles
• CPC Class Codes: A61B 2017/2946 Locking means
• CPC Class Codes: A61B 2090/0813 Accessories designed for easy sterilising, i.e. re-usable

Abstract

The invention relates to a surgical instrument comprising a shank and a slide which is mounted so as to be slideable along the shank. At least one guide element guided in at least one longitudinal groove is provided on the shank or the slide. The shank and the slide are each connected to a handle part, one handle part being mobile in relation to the other handle part about a pivot and being provided with a slot in which a cross bracket of the slide engages. The invention is characterized in that the position of the handle part in relation to the other handle part can be altered in the region of the pivot.

Claims

1. A surgical instrument with a shank, and with a slide which is mounted so as to be slideable along the shank, at least one guide element guided in at least one longitudinal groove being provided on the shank or the slide, and the shank and the slide each being connected to a handle part, of which one handle part is movable in relation to the other handle part about a pivot and is provided with a slot in which a cross-piece of the slide engages, wherein the position of the handle part in relation to the other handle part can be altered in the area of the pivot.

7. The surgical instrument as claimed in claim 1, wherein a limit stop can be moved behind or in front of the guide element in and out of the inside width of at least a part of the longitudinal groove.

8. The surgical instrument as claimed in claim 7, wherein the limit stop is guided in a blind hole arranged in the shank or slide.

9. The surgical instrument as claimed in claim 7, wherein the limit stop is guided obliquely with respect to the longitudinal groove.

10. The surgical instrument as claimed in claim 7, wherein the limit stop bears against an energy-accumulating means.

11. The surgical instrument as claimed in claim 10, wherein the energy-accumulating means is a helical spring.

12. The surgical instrument as claimed in claim 7, wherein the limit stop is connected via a connecting pin to a slide button situated on the outside of the shank.

13. The surgical instrument as claimed in claim 12, wherein the connecting pin has a threaded portion with which the connecting pin can be fitted into a threaded bore in the limit stop.

14. The surgical instrument as claimed in claim 7, wherein the limit stop is connected to a pull knob on an outside of the slide.

15. The surgical instrument as claimed in claim 7, wherein a recess, formed in the limit stop, constitutes a continuation of the longitudinal groove when the limit stop is displaced.

16. The surgical instrument as claimed in claim 7, wherein the limit stop is connected to a rocker lever arranged on the slide.

17. The surgical instrument as claimed in claim 7, wherein the limit stop is connected to a rotary lever arranged on the slide.

18. The surgical instrument as claimed in claim 1, wherein a movement of the movable handle part is limited by a limit stop.

19. The surgical instrument as claimed in claim 18, wherein the limit stop is a rocker lever.

20. The surgical instrument as claimed in claim 18, wherein the limit stop permits at least two, preferably three, opening positions of the movable handle part.

21. The surgical instrument as claimed in claim 18, wherein the limit stop in the fixed handle part is arranged behind the movable handle part and is pivotable about an axis.

22. The surgical instrument as claimed in claim 1, wherein the pivot connecting the two handle parts to each other has a pushbutton from which there protrudes a pin of stepped diameter.

23. The surgical instrument as claimed in claim 22, wherein the pin passes through two congruent bores arranged in the handle parts, and wherein the bore in the movable handle part is adjoined by a recess, preferably an oblong hole.

24. The surgical instrument as claimed in claim 23, wherein the recess has a width that corresponds to a diameter of lesser extent on the pin.

2. A surgical instrument with a shank, and with a slide which is mounted so as to be slideable along the shank in a manner limited by a locking mechanism, at least one guide element guided in at least one longitudinal groove being provided on the shank or the slide, and the shank and the slide each being connected to a handle part, of which one handle part is movable in relation to the other handle part, wherein the slide and the shank can be separated from each other in a scissor movement about a pivot after the locking has been canceled.

3. The surgical instrument as claimed in claim 2, wherein the pivot is situated between the shank and a fixed handle part.

4. The surgical instrument as claimed in claim 2, wherein the pivot is situated between the slide and a movable handle part.

5. The surgical instrument as claimed in claim 4, wherein a pusher part is fitted between the pivot and the movable handle part.

6. The surgical instrument as claimed in claim 2, wherein the pivot is composed of a transverse pin by means of which tongues engaging in one another like a fork are connected to one another.