Apparatus for producing a cavity in a bone

Details Apparatus for producing a cavity in a bone Apparatus for producing a cavity in a bone

1982-01-11

1984-08-21

Rosenbaum, C. Fred

Surgery

Truss

Perineal

128305, 128310, A61F 504, A61F 1732

Patent

active

044664290

ABSTRACT:
An apparatus comprising two rasping halves conforming generally to the shape of the bone cavity to be produced, and a drive mechanism for reciprocating both rasping halves counter to each other in an axial direction. A rotary cutting tool in front of the rasping halves prepares the bone cavity to receive the rasping halves. A flexible drive shaft for the cutting tool extends between the rasping halves and rotatably within a drive shaft for the rasping halves. The latter drive shaft has a slot oriented at an angle to the axis of rotation of the drive shaft, and a pin projects from each rasping half into the slot, the pins being located 180.degree. apart. A bushing guides the movement of the rasping halves, and the pin from each rasping half extending through a slot in a housing for their drive shaft prevents twisting of the rasping halves.

REFERENCES:
patent: 505712 (1893-09-01), Lofdahl
patent: 816277 (1906-03-01), Townley
patent: 2435863 (1948-02-01), Wydro
patent: 2659969 (1953-11-01), Merkur
patent: 3978862 (1976-09-01), Morrison
patent: 3986512 (1976-10-01), Walliser
patent: 4020555 (1977-05-01), Hedrick
patent: 4124026 (1978-11-01), Berner et al.
patent: 4273117 (1981-06-01), Neuhauser
patent: 4306550 (1981-12-01), Forte

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