Surgical Forceps for Phlebectomy

Abstract

The invention relates to surgical forceps used for the extraction of varicose veins and having:—a body with an articulation plate ( 4 ) and an elongate tubular sheath ( 1 );—two manoeuvring branches ( 2 a, 2 b ) mounted on the articulation plate ( 4 ) and movable relative to each other between an open position and a closed position, each of these branches ( 2 a, 2 b ) having a ring ( 5 a, 5 b ) for the introduction of a finger;—a gripper ( 3 ) mounted at the distal end of the tubular sheath ( 1 ) and having two jaws ( 7 a, 7 b ) mounted movably relative to each other about an axis A between an open position and a gripping position, the inner faces of said jaws ( 7 a, 7 b ) being toothed in order to hold the varicose veins; and—means for transmitting the movement of the manoeuvring branches ( 2 a, 2 b ) to the jaws ( 7 a, 7 b ), via the tubular sheath ( 1 ), said means being designed to move the jaws ( 7 a, 7 b ) to their gripping position when the manoeuvring branches ( 2 a, 2 b ) are closed together.

1 . A surgical forceps for removing varicose veins including:
 a body with an articulation plate and an elongate tubular sheath;   two maneuvering branches mounted on the articulation plate and movable relative to each other between an open position and a closed position, each of these branches having a ring for the insertion of a finger;   a gripper mounted at a distal end of the tubular sheath and having two jaws mounted movably relative to each other around an axis A between an open position and a gripping position, the jaws having toothed inner faces in order to hold the varicose veins; and   a linkage for transmitting the movement of the maneuvering branches to the jaws, via the tubular sheath, said linkage being such as to move the jaws to their gripping position when the maneuvering branches are closed together.   
     
     
         2 . The surgical forceps according to  claim 1 , wherein the rings are spaced apart by a distance of at least 1 cm relative to a working plane, orthogonal to the axis A, in which the jaws extend. 
     
     
         3 . The surgical forceps according to  claim 2 , wherein the rings extend in a maneuvering plane inclined by an angle greater than 10° relative to the working plane. 
     
     
         4 . The surgical forceps according to  claim 3 , wherein the rings extend in a maneuvering plane inclined by an angle comprised between 20 and 30° relative to the working plane. 
     
     
         5 . The surgical forceps according to  claim 1 , wherein the length of the tubular sheath is comprised between 10 and 25 cm. 
     
     
         6 . The surgical forceps according to  claim 1 , wherein the tubular sheath has a section smaller than or equal to 3 mm. 
     
     
         7 . The surgical forceps according to  claim 1 , wherein the inner faces of the jaws have toothed surfaces with complementary shapes. 
     
     
         8 . The surgical forceps according to  claim 1 , wherein the jaws are provided at their distal end with one or more claws. 
     
     
         9 . The surgical forceps according  claim 1 , wherein the linkage includes a shaft translatable inside the tubular sheath and at least one connecting rod having a first end rotatably mounted on one of the branches and a second end rotatably mounted on one end of the shaft. 
     
     
         10 . The surgical forceps according to  claim 9 , wherein a first of the two jaws is movably mounted around the axis A relative to a second of the two jaws, which is stationary and in that the distal end of the moving shaft is equipped with a connecting rod that is on the one hand movably mounted on said first of the two jaws around a second axis B not identical with the axis A, and on the other hand mounted rotatably on the distal end of the shaft. 
     
     
         11 . An assembly including a set of surgical forceps according to  claim 1 , said forceps comprising tubular sheaths of different lengths.