Electrosurgical tubular shaft, surgical instrument grip and electrosurgical tubular shaft instrument

Abstract

An electrosurgical tubular shaft for use with a surgical instrument grip for formation of an electrosurgical tubular shaft instrument is provided. The tubular shaft comprises a tube, an electrosurgical tool arranged at the distal end on the tubular shaft, at least one electric connection line electrically connected to the tool and extending in the tube, and at least one coupling element arranged at the proximal end on the tubular shaft for interacting with at least one corresponding coupling element of the instrument grip for releasably coupling the instrument grip to the tubular shaft. The tube comprises an outlet opening which is arranged distally of the at least one coupling element and through which the at least one connection line issues from the tube. The tubular shaft comprises an electric connection element for an electric energy supply. A surgical instrument grip and an electrosurgical tubular shaft instrument are also provided.

What is claimed is: 
     
         1 . Electrosurgical tubular shaft for use with a surgical instrument grip for formation of an electrosurgical tubular shaft instrument, comprising:
 a tube,   an electrosurgical tool arranged at a distal end of the tube,   at least one electric connection line electrically connected to the tool and extending in the tube,   at least one coupling element arranged at a proximal end of the tube for interacting with at least one corresponding coupling element of the instrument grip for releasably coupling the instrument grip to the tubular shaft,   the tube comprising an outlet opening which is arranged distally of the at least one coupling element and through which the at least one connection line issues from the tube, and   an electric connection element for an electric energy supply, which is arranged at the proximal end on the at least one connection line.   
     
     
         2 . Tubular shaft in accordance with  claim 1 , wherein the at least one connection line issues at a side from the tube, transversely to a direction defined by the tube. 
     
     
         3 . Tubular shaft in accordance with  claim 1 , wherein the outlet opening is a through-opening which is formed in the tube and through which the at least one connection line issues from the tube. 
     
     
         4 . Tubular shaft in accordance with  claim 1 , further comprising a bushing, receiving the tube, for insertion into a corresponding sleeve of the instrument grip, the bushing comprising at a proximal end at least one coupling element, and wherein there is formed in the bushing a through-opening through which the at least one connection line is led. 
     
     
         5 . Tubular shaft in accordance with  claim 1 , further comprising a sheath surrounding the at least one connection line at a section of the at least one connection line which has issued from the tube, the sheath being one of resistant to bending or flexible. 
     
     
         6 . Tubular shaft in accordance with  claim 1 , wherein the tubular shaft is a bipolar electrosurgical tubular shaft and comprises two electric connection lines electrically connected to the tool. 
     
     
         7 . Tubular shaft in accordance with  claim 6 , wherein a common connection element is provided, which is arranged at the proximal end on both connection lines. 
     
     
         8 . Tubular shaft in accordance with  claim 1 , wherein the tool is a forceps tool. 
     
     
         9 . Tubular shaft in accordance with  claim 1 , further comprising at least one contact member which is accommodated in the connection element and is electrically connected to the at least one connection line. 
     
     
         10 . Tubular shaft in accordance with  claim 1 , further comprising at least one connecting element for releasably fixing the at least one connection line to the instrument grip. 
     
     
         11 . Tubular shaft in accordance with  claim 10 , wherein the at least one connection element comprises or forms the at least one connecting element. 
     
     
         12 . Tubular shaft in accordance with  claim 11 , wherein the at least one connecting element is formed in one piece with the at least one connection element. 
     
     
         13 . Tubular shaft in accordance with  claim 10 , wherein the at least one connecting element comprises or forms an abutment member for the instrument grip on a distal end face. 
     
     
         14 . Surgical instrument grip for use with an electrosurgical tubular shaft, the surgical instrument grip comprising:
 at least one coupling element for interacting with at least one corresponding coupling element of the tubular shaft for releasably coupling the tubular shaft to the instrument grip, and   at least one connecting element for releasably fixing at least one connection line of the tubular shaft to the instrument grip, the at least one connecting element being arranged on a proximal end face of the instrument grip,   wherein the tubular shaft comprises:   a tube,   an electrosurgical tool arranged at a distal end of the tube,   the at least one electric connection line, which is electrically connected to the tool and extending in the tube,   the at least one coupling element, which is arranged at a proximal end of the tube for interacting with the at least one corresponding coupling element of the instrument grip for releasably coupling the instrument grip to the tubular shaft,   the tube comprising an outlet opening which is arranged distally of the at least one coupling element and through which the at least one connection line issues from the tube, and   an electric connection element for an electric energy supply, which is arranged at the proximal end on the at least one connection line.   
     
     
         15 . Instrument grip in accordance with  claim 14 , wherein the at least one connecting element comprises or forms an abutment member on a proximal end face of the instrument grip for a connecting element of the tubular shaft. 
     
     
         16 . Electrosurgical tubular shaft instrument, comprising:
 a surgical instrument grip, the surgical instrument grip comprising:   at least one coupling element for interacting with at least one corresponding coupling element of the tubular shaft for releasably coupling the tubular shaft to the instrument grip, and   at least one connecting element for releasably fixing at least one connection line of the tubular shaft to the instrument grip, and an electrosurgical tubular shaft, the tubular shaft comprising:   a tube,   an electrosurgical tool arranged at a distal end of the tube,   the at least one electric connection line, which is electrically connected to the tool and extending in the tube,   the at least one coupling element, which is arranged at a proximal end of the tube for interacting with the at least one corresponding coupling element of the instrument grip for releasably coupling the instrument grip to the tubular shaft,   the tube comprising an outlet opening which is arranged distally of the at least one coupling element and through which the at least one connection line issues from the tube,   an electric connection element for an electric energy supply, which is arranged at the proximal end on the at least one connection line, and   at least one connecting element for interacting with the at least one corresponding connecting element of the instrument grip.   
     
     
         17 . Tubular shaft instrument in accordance with  claim 16 , wherein the at least one connection line is of such dimensions that with a section of the at least one connection line which has issued from the tube it is free or substantially free of axial pulling and/or pushing forces. 
     
     
         18 . Tubular shaft instrument in accordance with  claim 16 , wherein the section of the at least one connection line which has issued from the tube extends axially parallel from distal to proximal along the instrument grip. 
     
     
         19 . Tubular shaft instrument in accordance with  claim 16 , wherein the section of the at least one connection line which has issued from the tube extends transversely to an axial direction alongside an actuatable grip element of the instrument grip for acting on the tool. 
     
     
         20 . Tubular shaft instrument in accordance with  claim 16 , wherein the instrument grip comprises two actuatable grip elements for acting on the tool, with the section of the at least one connection line which has issued from the tube extending between the grip elements, in relation to a direction transverse to the axial direction.