US 4,976,721 AGranted

Surgical clamping device

AssigneeThe Research Foundation of State University of New York

InventorsWilliam Blasnik, Stanley B. Pollak

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Abstract

An intestinal occluding clamp including first and second clamping members with jaws, a biasing spring, a clamp housing, a clamp base and a clamp cap. The clamp housing has a housing cavity formed at one end thereof and a first clamping member is connected to and projects away from the housing cavity. The biasing spring is disposed within the cavity and circumferentially about the base post. The clamp cap and biasing spring are retractably mounted within the housing cavity and provide a spring-loaded, push-button housing for simple and reliable operation. Take-up clearances within the housing are provided such that when the cap is fully depressed downwardly with one's thumb, the distal ends of the jaws first move apart until the clamp is in locked-open position with no spring resistance against the surgeon's thumb, and when the clamp is released, the clamping members move towards each other during spring-biased forced closing movement, and finally the jaws become substantially parallel with the tubular structure, interposed therebetween. Another aspect of the present invention is an intestinal occluding clamp with first and second corrugated surfaces having anti-slip grooves which facilitate sliding of an intestine between the open clamping members with minimal degree of resistance or reacting force and, provides essentially high resistance to movement of clamped vessel's out from between the substantially parallel, closed clamping members.

A surgical clamping device operable between an open and closed position for occluding anatomical tubular structures, comprising:

(a) a first clamping member having a first jaw portion with a proximal end an a distal end, and a clamp housing fixed on the proximal end of said jaw portion, said clamp housing adapted to receive a second clamping member with a jaw portion opposite said first jaw portion of said first member and having an interior cavity with at least a front wall, a back wall, and a bottom wall, said bottom wall having an aperture formed therethrough;
(b) a second clamping member having a second jaw portion with a proximal end and a distal end, and a clamp base fixed to the proximal end of said jaw portion, the clamp base having a base post for passage through said aperture of said bottom wall of said housing, said base post having a bore formed therethrough, and a cap stem and a cap fixed on the cap stem, said cap adapted to fit in said clamp housing, and said cap stem being received by said bore, said cap having at least a front wall arranged adjacent and proximal to said front wall of said housing and a back wall arranged adjacent and proximal to said back wall of said housing during operation of said clamping device and adapted to orient said second member jaw portion opposite said first member jaw portion, said aperture of said bottom wall of said housing allowing pivoting of said cap stem and said base post within said housing during movement of said jaw portions between an opened and a closed position;
(c) biasing means fixed with respect to said housing and said cap to continually urge said jaws to the closed position with a force sufficient to occlude said tubular structure;
and
(d) deflection means provided on said housing and said base for causing said distal ends of said jaw portions to diverge when sid device is in the open position and for causing said distal ends of said jaw portions to converge as said device closes under the force of said biasing means whereby said jaws are substantially parallel in the closed position with said tubular structure interposed therebetween to provide uniformly distributed clamping pressure on said tubular structure.

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Abstract

Claims17