Calculus crushing apparatus

Details Calculus crushing apparatus Calculus crushing apparatus

1987-01-09

1988-05-03

Thaler, Michael H.

Surgery

Truss

Pad

128328, A61B 1722

Patent

active

047413352

ABSTRACT:
A crushing apparatus has a flexible sheath which is adapted to be inserted into a body cavity with the aid of an endoscope. An operating wire longer than the sheath is slidably inserted into the sheath. A collapsible basket for seizing a calculus produced in a body cavity is coupled to the distal end of the operation wire and extends from the sheath. The proximal end of the sheath is connected to an operating section for sliding the operating wire to extend or contract the basket. The operating section includes a rack coupled to the operating wire and an operating handle connected to the rack through a speed reduction mechanism. The reduction mechanism decelerates and transmits an operative force, which is supplied to the handle, to the rack, thereby sliding the operating wire.

REFERENCES:
patent: 1002826 (1911-09-01), Vilbiss
patent: 4256113 (1981-03-01), Chamness
patent: 4294254 (1981-10-01), Chamness

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