Medical manipulator

Abstract

A medical manipulator including: a flexible elongated section composed of an electrically conductive material and capable of transmitting torsional torque; a joint section disposed at a distal end of the elongated section, having a joint, and composed of an electrically conductive material; a treatment section attached to a distal end of the joint section; a cylindrical connection member composed of an insulating material, disposed between the elongated section and the joint section, and connecting the elongated section and the joint section; an electric cable that extends internally through the elongated section, the connection member, and the joint section in a state where the electric cable is electrically insulated from the elongated section and the joint section; and a cover composed of an insulating material and covers outer surfaces of the joint section and the elongated section.

1 . A medical manipulator comprising:
 a elongated section that includes a component composed of an electrically conductive material;   a joint section that is disposed at a distal end of the elongated section and that has at least one joint and includes a component composed of an electrically conductive material;   a treatment section that is attached to a distal end of the joint section and that medically treats tissue;   a cylindrical connection member that is composed of an insulating material and that is disposed between the elongated section and the joint section to connect the elongated section and the joint section;   an electric cable that extends internally through the elongated section, the connection member, and the joint section in a state where the electric cable is electrically insulated from the elongated section and the joint section and that supplies electric power to the treatment section; and   a cover that is composed of an insulating material and that covers outer surfaces of the joint section and the elongated section.   
     
     
         2 . The medical manipulator according to  claim 1 ,
 wherein the connection member connects the elongated section and the joint section such that torsional torque can be transmitted between the elongated section and the joint section.   
     
     
         3 . The medical manipulator according to  claim 1 ,
 wherein the joint section and the connection member individually have joint-side protrusion-recess sections that are fitted to each other in a detachable manner in a direction extending along an axis of the connection member and that engage with each other in a fitted state so that the joint section and the connection member do not relatively move in a circumferential direction.   
     
     
         4 . The medical manipulator according to  claim 1 ,
 wherein the connection member and the elongated section individually have elongated-section-side protrusion-recess sections that are fitted to each other in a detachable manner in a direction extending along an axis of the connection member and that engage with each other in a fitted state so that the connection member and the elongated section do not relatively move in a circumferential direction.   
     
     
         5 . The medical manipulator according to  claim 1 ,
 wherein the cover includes a joint cover that covers the joint section and an elongated section cover that covers the elongated section, and   wherein the joint cover and the long-section cover extend to a position where the covers partially cover the connection member.   
     
     
         6 . The medical manipulator according to  claim 1 , wherein the electric cable extends through penetrating holes provided in the joint section and the elongated section so as to be electrically connected to the treatment section. 
     
     
         7 . The medical manipulator according to  claim 1 , wherein
 the joint section has a fitting portion in order to connect the joint section and the elongated section, and   the connection member is a member which connects the fitting portion of the joint section and the elongated section.