Slidable kit for endoscopic ligation

Details Slidable kit for endoscopic ligation Slidable kit for endoscopic ligation

1994-08-15

1996-04-16

Pellegrino, Stephen C.

Surgery

Instruments

Suture, ligature, elastic band or clip applier

606139, A61B 1700

Patent

active

055077978

ABSTRACT:
A slidable kit for endoscopic ligation of gastric and esophageal varices comprises an endoscope-inserting cylinder and a ligating device coaxially and integrally secured to the endoscope-inserting cylinder, where the ligating device is in such a structure that a slide cylinder having an annular rib on the outer periphery at the rearward end is inserted into an outer cylinder having an annular rib on the inner periphery at the forward end; an inner cylinder is inserted into the slide cylinder; the outer cylinder and the inner cylinder are integrated together at the rearward ends and firmly secured to the forward end of the endoscope-inserting cylinder; an elastic O ring is mounted on the outer periphery at the forward end of the inner cylinder; a seal ring is provided at the rearward end of the slide cylinder, thereby keeping an annular space between the outer cylinder, the inner cylinder and the slide cylinder hermetic; the slide cylinder is slidable forwards by a liquid introduced into the annular space through the tube to push and release the elastic O ring, thereby ligating a varix sucked in the inner cylinder, can overcome problems of the conventional kit for endoscopic ligation, such as narrowed endoscopic sight, ligation failure when the endoscope is turned, washing and aspiration failure through a forceps channel.

REFERENCES:
patent: 4375194 (1983-04-01), Stiegmann
patent: 4485817 (1984-12-01), Swiggett
patent: 5100419 (1992-03-01), Ehlers
patent: 5269789 (1993-12-01), Chin et al.
patent: 5320630 (1994-06-01), Ahmed

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