Device for laparoscopic surgery

Abstract

A surgical device which combines cautery and tissue debris conveyance via a combination of suction and an Archimedes screw, the cautery electrode encased within the Archimedes screw, the device comprising a device body housing a motor for rotating the screw, a cannula having an aperture for exposing an instrument, extending from the body portion, and a connector system operatively associated with the body portion, the connector system organized to provide pre-determined relative locations of connection for operably connecting the cannula, a cautery electrode and an Archimedes screw to the device body such the cautery electrode tip is positionable outside the aperture of the cannula and the Archimedes screw is disposed within the cannula in a position for conveying tissue entering the cannula via suction.

What is claimed is: 
     
         1 . A surgical device body, comprising:
 a housing having a cannula connector that is configured to releasably receive a cannula along an axis;   a drive system that is operable to cause rotation of a drive system output member, wherein the drive system output member has a first Archimedes screw connector that is connectable with a second Archimedes screw connector on an Archimedes screw so as to operatively connect the drive system to the Archimedes screw;   an electrical terminal that is positioned to electrically connect to a cautery tool that extends through a hub of the Archimedes screw;   wherein the drive system output member and the electrical terminal are axially movable between an advanced position and a retracted position relative to the housing.   
     
     
         2 . A surgical device body as claimed in  claim 1 , wherein the electrical terminal is concentric with the cannula connector. 
     
     
         3 . A surgical device body as claimed in  claim 2 , wherein the first Archimedes screw connector is positioned concentrically with respect to the cannula. 
     
     
         4 . A surgical device body as claimed in  claim 3 , wherein in the advanced position, the drive system output member and electrical terminal are positioned to bring the cautery tool to an advanced tool position in which the working end of the cautery tool is outside of the cannula. 
     
     
         5 . A surgical device body as claimed in  claim 1 , further comprising a fluid conduit that has a first conduit end that is fluidically connectable with a vacuum port on the cannula, wherein the fluid conduit is connectable with a vacuum source. 
     
     
         6 . A surgical device body as claimed in  claim 1 , wherein the surgical device body further comprises a control system, the control system operable to control the drive system and to move the drive system output member and the electrical terminal between an advanced position and a retracted position relative to the housing. 
     
     
         7 . A surgical device body as claimed in  claim 1 , further comprising an actuator operable move the drive system output member and the electrical terminal between the advanced position and the retracted position relative to the housing. 
     
     
         8 . A surgical device body as claimed in  claim 6 , wherein the control system is operable to terminate operation of the electrode tool and contemporaneously initiate suction and rotation of the Archimedes screw. 
     
     
         9 . A surgical device body as claimed in  claim 6 , wherein the control system is operable to initiate operation of the electrode tool and contemporaneously terminate suction. 
     
     
         10 . A surgical device body as claimed in  claim 8 , wherein the control system is operable to initiate operation of the electrode tool and contemporaneously terminate suction.