INSTRUMENTS FOR CIRCULAR STAPLING OF HOLLOW BODY ORGANS AND DISPOSABLE CARTRIDGE THEREFOR

摘要

Apparatus for circular surgical stapling of hollow organs comprising an instrument and disposable cartridge. The instrument comprises a housing with a throughbore in which a tube is received for reciprocation by means of a manually operable squeeze handle. A rod reciprocates within the tube by means of a wing nut cooperating with a threaded part of the rod. A two-part disposable cartridge assembly comprised of an anvil carrying part and a staple carrying part are detachably mounted on the rod and housing, respectively. A key is provided to hold the housing and rod in rotational orientation. Mutually coacting stops on the tube and rod determine the extent of reciprocation which is variable in dependence upon the position of the rod which in turn is dependent upon the juxtaposition of the anvil carrying part with the staple carrying part when the apparatus is closed on tissue preparatory to effecting a circular anastomoses.