Medical coagulation instrument

• US 20100331836A1
• Filed: 06/16/2010
• Published: 12/30/2010
• Est. Priority Date: 06/16/2009
• Status: Active Grant

• Current Assignee: Karl Storz Se & Co. Kg
• Original Assignee: Karl Storz Se & Co. Kg
• Inventors: Bacher, Uwe, Hermle, Rainer
• Granted Patent: US 8,974,455 B2
• Time in Patent Office: Days
• US Class Current: 606/49
• CPC Class Codes: A61B 18/1482 having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
• CPC Class Codes: A61B 2018/126 bipolar
• CPC Class Codes: A61B 2018/1467 using more than two electrodes on a single probe
• CPC Class Codes: A61B 2218/002 Irrigation
• CPC Class Codes: A61B 2218/007 Aspiration
• CPC Class Codes: A61B 2218/008 for smoke evacuation

Abstract

A medical coagulation instrument having a shaft as well as at least one electrode tip that extends beyond the distal end of the shaft. To create a coagulation instrument whose electrodes are of simple structure and ensure an atraumatic and safe handling, at least one electrode tip should be widened or be configured as widening in the distal direction.

Claims

1. A medical coagulation instrument having a shaft as well as at least one electrode tip extending beyond the distal end of the shaft, characterized in that the at least one electrode tip widens or is configured as widening in the distal direction.

2. The medical coagulation instrument according to claim 1, wherein on the distal end of the shaft are positioned two electrode tips that extend beyond the distal end of the shaft, are electrically insulated with respect to one another, and both widen or are configured as widening in the distal direction.

3. The medical coagulation instrument according to claim 1, wherein the electrode tip or electrode tips are configured as thickening in the distal direction.

4. The medical coagulation instrument according to claim 1, wherein the electrode tip or electrode tips are configured as widening conically in the distal direction.

5. The medical coagulation instrument according to claim 1, wherein the electrode tip or electrode tips are configured as widening in fan shape in the distal direction.

6. The medical coagulation instrument according to claim 1, wherein the electrode tip or electrode tips are configured as widening in stages in the distal direction.

7. The medical coagulation instrument according to claim 6, wherein the electrode tip comprises sections of constant material strength in the distal direction.

8. The medical coagulation instrument according to claim 1, wherein a small plate is affixed to the electrode tip.

9. The medical coagulation instrument according to claim 8, is affixed to the outside of the electrode tip.

10. The medical coagulation instrument according to claim 8, wherein the small plate is affixed on the inside of the electrode tip.

11. The medical coagulation instrument according to claim 8, wherein the small plate has a constant material strength.

12. The medical coagulation instrument according to claim 8, wherein the material strength of the small plate varies, and in particular increases, in the distal direction.

13. The medical coagulation instrument according to claim 8, wherein the material strength of the small plate varies in the tangential direction, and in particular increases in the outward direction.

14. The medical coagulation instrument according to claim 8, wherein the material strength of the small plate is essentially equal to the material strength of the electrode tip.

15. The medical coagulation instrument according to claim 1, wherein the free ends of the electrode tips are configured as rounded.