Cutting and coagulating forceps
First Claim
1. A cutting and coagulating forceps comprisinga housing,a tubular barrel protruding from a forward end of the housing, the barrel having an open mouth at its distal end,a pair of jaws partially protruding from the mouth of the barrel, and being movable in a direction parallel to the axis of the barrel,first manually operable means for moving the jaws parallel to the barrel axis,a cutting blade disposed between the jaws, and being movable along the axis of the barrel independently of the jaws,second manually operable means for advancing the blade along the barrel axis, anda movable stop fixed to the jaw moving means for limiting forward movement of the blade as a function of jaw movement so that the blade cannot strike the jaws, regardless of their position.
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Accused Products
Abstract
A cutting and coagulating forceps includes a housing with a protruding barrel, a pair of electrocautery jaws which are closed by camming contact with the mouth of the barrel when the jaws are retracted, and an independently sliding blade which passes between the jaws. The jaws are opened by squeezing a trigger, and the blade is advanced by pressing a lever with the thumb. Forward blade movement is limited by a stop whose position is a function of jaw position, so that the blade cannot strike the jaws, yet always can travel short of contact with the tips of the jaws.
919 Citations
15 Claims
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1. A cutting and coagulating forceps comprising
a housing, a tubular barrel protruding from a forward end of the housing, the barrel having an open mouth at its distal end, a pair of jaws partially protruding from the mouth of the barrel, and being movable in a direction parallel to the axis of the barrel, first manually operable means for moving the jaws parallel to the barrel axis, a cutting blade disposed between the jaws, and being movable along the axis of the barrel independently of the jaws, second manually operable means for advancing the blade along the barrel axis, and a movable stop fixed to the jaw moving means for limiting forward movement of the blade as a function of jaw movement so that the blade cannot strike the jaws, regardless of their position.
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11. A cutting and coagulating forceps comprising
a housing, a tubular barrel protruding from a forward end of the housing, the barrel having an open mouth at its distal end, a pair of jaws partially protruding from the mouth of the barrel, and being movable in a direction parallel to the axis of the barrel, means for moving the jaws parallel to the barrel axis, a cutting blade disposed between the jaws, and being movable along the axis of the barrel independently of the jaws, means for advancing the blade along the barrel axis, and a movable stop connected to the jaw moving means for limiting forward movement of the blade, and wherein the jaw moving means comprises a lever pivotally mounted within the housing and having a trigger protruding from the housing whereby the lever can be pivoted in one direction by squeezing the trigger, a return spring for pivoting the lever in the opposite direction, and an elongated member connecting an upper end of the lever with said jaws, and wherein the elongated member is a tube substantially coaxial within said barrel, and the blade moving means comprises at least one thumb lever pivotally supported on the housing, a rod affixed to said blade, and means linking the thumb lever to the rod.
Specification