Surgery – Instruments – Suture – ligature – elastic band or clip applier
Patent
1995-02-15
1996-10-29
Buiz, Michael Powell
Surgery
Instruments
Suture, ligature, elastic band or clip applier
606139, A61B 1700
Patent
active
055692680
ABSTRACT:
An endoscopic ligating instrument has an outer tube having a rear end in which the tip end of an endoscope is mounted. An inner tube with a trip wire connected thereto is axially movably inserted in the outer tube. When the inner tube is moved rearwardly, the inner tube is urged to move forwardly by a spring. Three ligating O-rings are mounted respectively at axially equally spaced positions on the outer circumferential surface of a portion of the inner tube which projects from the outer tube. Four arms extending forwardly from the outer tube are disposed respectively at circumferentially equally spaced positions over the outer circumferential surface of the inner tube. Each of the arms has teeth disposed behind the ligating O-rings, respectively, and having front pushing surfaces for pushing the ligating O-rings forwardly when the inner tube is moved rearwardly and rear slant surfaces for riding over the ligating O-rings and spreading the arms radially outwardly when the inner tube is moved forwardly. The endoscopic ligating instrument can ligate a plurality of varices successively which the endoscope is being inserted in a cavity in the body of a patient.
REFERENCES:
patent: 4493319 (1985-01-01), Polk et al.
patent: 4735194 (1988-04-01), Stiegmann
patent: 5269789 (1993-12-01), Chin et al.
patent: 5320630 (1994-06-01), Ahmed
patent: 5356416 (1994-10-01), Chu et al.
Buiz Michael Powell
Kabushiki Kaisha Top
Schmidt Jeffrey A.
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