Medical instrument for electrosurgery

• US 7,553,311 B2
• Filed: 02/01/2005
• Issued: 06/30/2009
• Est. Priority Date: 07/02/2004
• Status: Active Grant

• Current Assignee: Karl Storz Se & Co. Kg
• Original Assignee: Karl Storz Se & Co. Kg
• Inventors: Anders, Fridolin, Brueckler, Hubert
• Primary Examiner(s): PEFFLEY, MICHAEL F
• Application Number:
  US11/048,483
• Publication Number:
  US 20060004355A1
• Time in Patent Office: 1,610 Days
• Field of Search: 606/45, 606/46, 606 48- 52
• US Class Current: 606/51
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: B32B 25/10 next to a fibrous or filamentary layer

Abstract

A medical instrument for electrosurgery comprises a tubular shaft having a distal end and a proximal end, at least one jaw part arranged at the distal end of the shaft and movable relative to the tubular shaft about a pivot axis, at least one electrode arranged at the at least one jaw part, and at least one current supply line leading to the at least one electrode and designed as a wire-shaped element, a distal end of which being connected to the at least one electrode, the wire-shaped element being configured as a loop in the region of the pivot axis.

Claims

1. A medical instrument for electrosurgery, comprising:

a tubular shaft having a distal end and a proximal end,

at least one jaw part arranged at said distal end of said shaft and movable relative to said tubular shaft about a pivot axis,

at least one electrode arranged at said at least one jaw part,

at least one current supply line leading to said at least one electrode and designed as a wire-shaped element, a distal end of which being connected to said at least one electrode, said wire-shaped element being configured as a loop in the region of said pivot axis;

said wire-shaped element, at least in the region of said loop, is made of a resilient, electrically conductive material; and

said wire-shaped element is made of spring steel, at least in the region of said loop.

2. The instrument of claim 1, wherein said loop extends over at least approximately half a circle.

3. The instrument of claim 1, wherein said loop extends over at least one full circle.

4. The instrument of claim 1, wherein said loop is arranged around said pivot axis.

5. The instrument of claim 1, wherein said distal end of said tubular shaft is provided with a second moveable jaw part which is pivotable about said pivot axis and has a second electrode, and wherein an axially moveable force transmission element of an actuating mechanism for moving said two jaw parts serves as current supply line for said second electrode.

6. The instrument of claim 5, wherein said two jaw parts are insulated from one another in the region of said pivot axis.

7. A medical instrument for electrosurgery, comprising:

a tubular shaft having a distal end and a proximal end,

at least one jaw part arranged at said distal end of said shaft and movable relative to said tubular shaft about a pivot axis,

at least one electrode arranged at said at least one jaw part, and

at least one current supply line leading to said at least one electrode and designed as a wire-shaped element, a distal end of which being connected to said at least one electrode, said wire-shaped element being configured as a loop in the region of said pivot axis; and

wherein a proximal end of said wire-shaped element is fixed on said tubular shaft and connected conductively to said tubular shaft.

8. The instrument of claim 7, wherein said loop is resilient.

9. The instrument of claim 7, wherein said distal end of said tubular shaft is provided with a second moveable jaw part which is pivotable about said pivot axis and has a second electrode, and wherein an axially moveable force transmission element of an actuating mechanism for moving said two jaw parts serves as current supply line for said second electrode.

10. The instrument of claim 9, wherein said two jaw parts are insulated from one another in the region of said pivot axis.

11. The instrument of claim 7, wherein said loop is arranged around said pivot axis.