Dissecting-cum haemostapling scissors

Claim 1

Dissecting-cum-haemostatic scissors comprising an upper jaw member and a lower jaw member hingedly connected to each other; said upper jaw member having a first extension merging into a lower handle member, said lower jaw member having a second extension merging into an upper handle member, said upper handle member having a ring portion at a rear end thereof, said ring portion being adapted to accommodate the thumb of a surgeon, a lower end of said ring portion having a lock knob adapted to engage a lock release system formed on an upper portion at a rear end of said lower handle member, said lock release system including a plurality of locks each adapted to engage said lock knob when two handle members are brought closer towards each other, said lock release system also including a final lock release member adapted to release the lock knob when the lock knob is brought face to face with said lock release member such that the upper handle member is released from the lower handle member to take an original position thereof; a handle spring provided between said upper handle member and said lower handle member and adapted to the two handle members to remain separated from each other, the rear end of the lower handle member having a support for accommodating the fingers of the surgeon, the upper jaw member and the lower jaw member each being provided with a sharp prong at an extreme forward end thereof, the lower jaw member having a flat inner surface provided with a longitudinal slit housing extending centrally of the same wherein said slit housing extends downwardly and is adapted to accommodate a pivotable sharp cutting blade therein, said blade having a cutting edge lying flush with the flat surface of the lower jaw member, and wherein said sharp blade is a disposable blade and has a blunt edged tip disposed at an outer end of said slit housing and is also provided with a handle extending towards an inner end of said slit housing, said handle of the blade being pivotally secured to said slit housing by a pivot pin forming a fulcrum point of the handle, a lower end of the handle of the blade being acted upon by a blade release spring provided at said slit housing, the upper jaw member having at an inner side thereof a fulcrum acting on the handle of the blade such that when the lower handle member and the upper handle member are brought towards one another, the upper jaw member and the lower jaw member are urged towards each other and the fulcrum on the inner side of the upper jaw member acts upon the handle of the blade to pivotally urge the blade upwards from the slit housing while, at the same time, the lock knob is in engagement with different locks of the lock release system successively; and a set of staple magazines containing haemostaples and being accommodated inside an intermediate portion of said upper jaw member, such that when a vascular tissue or a blood vessel to be operated upon is grasped by the scissors, the prongs of said upper and said lower jaw member operate to dissect and place the vascular tissue or blood vessel between the upper jaw member and the lower jaw member and position the same directly above the cutting blade and directly below a staple magazine such that when the upper and lower jaw members are urged towards each other, the vascular tissue or blood vessel is cut and also ends of a cut are subjected to haemo-stapling immediately after cutting automatically by haemo-staples accommodated int he staple magazine.