Surgical cutter

Details Surgical cutter Surgical cutter

1992-06-11

1993-07-13

Thaler, Michael H.

Surgery

Instruments

Cutting, puncturing or piercing

604 22, A61B 1732

Patent

active

052269108

ABSTRACT:
A surgical cutting instrument which comprises an outer tubular member having a closed distal end closed and also having an aperture defined therein adjacent to the closed distal end which is in communication with the hollow of the outer tubular member and an inner tubular member having an open distal end which is slidably disposed in the outer tubular member such that the inner tubular member slides along its longitudinal axis first and second positions. The distal end of the inner tube has also has a scraper region defined therein. The scraper region is curled so as to represent a curved shape corresponding to a portion of a circle having a diameter greater than the outer diameter of the inner tubular member, so that when the inner tubular member is moved within the outer tubular member, the curled scraper region can be forcibly brought into sliding contact with an inner peripheral surface of the outer tubular member. Therefore, during the movement of the inner tubular member from the first position towards the second position relative to the outer tubular member, the curled scraper region is moved past the aperture in the outer tubular member to cut a tissue entering into the outer tubular member through the aperture.

REFERENCES:
patent: 3289669 (1966-12-01), Dwyer et al.
patent: 3815604 (1974-06-01), O'Malley et al.
patent: 4210146 (1980-07-01), Banko
patent: 4513745 (1985-04-01), Amoils
patent: 4653496 (1987-03-01), Bundy et al.
patent: 4696298 (1987-09-01), Higgins et al.
patent: 4819635 (1989-04-01), Shapiro
patent: 4846192 (1989-07-01), MacDonald

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