초록 ▼

A pinch valve for a flexible conduit is provided. The pinch valve has an arcuate rigid hook, an arcuate rigid pincher, and an actuator. The arcuate rigid hook has an inner surface of a diameter substantially equal to outer diameter of the flexible conduit, wherein the inner surface receives the cond

A pinch valve for a flexible conduit is provided. The pinch valve has an arcuate rigid hook, an arcuate rigid pincher, and an actuator. The arcuate rigid hook has an inner surface of a diameter substantially equal to outer diameter of the flexible conduit, wherein the inner surface receives the conduit. The arcuate rigid pincher has an outer arcuate surface with a diameter at least as small as the inner diameter of the flexible conduit, and the flexible conduit is located between the arcuate hook and the arcuate rigid pincher. The actuator is coupled to either the hook or the pincher, and moves the hook relative to the pincher relative from a first position to collapse and pinch the flexible conduit therebetween to a second position where said flexible conduit is not collapsed and pinched. Preferably, the actuator is spring loaded so that the conduit is pinched. By providing the flexible conduit with a thick wall, the actuator may be actuated a small distance without permitting fluid flow through the flexible conduit. The pinch valve finds particular use in an endoscopic suction/irrigation instrument.

대표청구항 ▼

A pinch valve for a flexible conduit having a wall with an outer surface of a first diameter and an inner surface of a second diameter, said pinch valve comprising: a) a first arcuate rigid means having an inner arcuate surface of a third diameter substantially equal to said first diameter wherein s

A pinch valve for a flexible conduit having a wall with an outer surface of a first diameter and an inner surface of a second diameter, said pinch valve comprising: a) a first arcuate rigid means having an inner arcuate surface of a third diameter substantially equal to said first diameter wherein said inner arcuate surface receives said outer surface of first diameter of said flexible conduit; b) a second arcuate rigid means having an outer arcuate surface of a fourth diameter at least as small as said second diameter, and said flexible conduit is located between said first and second arcuate rigid means; c) actuator means coupled to one of said first and second arcuate rigid means, said actuator means for moving said one of said first and second arcuate rigid means relative to another of said first and second arcuate rigid means from a first position to collapse and pinch said flexible conduit therebetween to a second position where said flexible conduit is not collapsed and pinched; d) biasing means for urging said first and second conduit rigid means towards each other so as to collapse and pinch said flexible conduit in a default position; and e) finger activated trigger means coupled to said biasing means and to said actuator means, and substantially coaxial with said actuator means.