Trephine instrument and method for cutting annular holes

Details Trephine instrument and method for cutting annular holes Trephine instrument and method for cutting annular holes

1991-04-02

1993-03-30

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 80, A61F 1700

Patent

active

051979675

ABSTRACT:
An improved trephine instrument for use in bone surgery comprises a tubular casing, an annular cutting face disposed on one end of the casing, and a cannulated piston mounted on a spring in the housing. The cutting face comprises a plurality of prongs spaced from each other, with thickened cutting edges at their tips. The head of the piston exends beyond the cutting face in the forward position. A flange is formed at the head of the piston. In use, a Kirschner wire is attached to the bone and inserted into the cannulation in the piston. The trephine instrument is then rotated and pressed foward to cut a bone plug.

REFERENCES:
patent: 1123720 (1915-01-01), Greenfield
patent: 3367335 (1968-02-01), Ward et al.
patent: 3945375 (1976-03-01), Banko
patent: 4004581 (1977-01-01), Heimke et al.
patent: 4273117 (1981-06-01), Neuhauser
patent: 4517977 (1985-05-01), Frost

Affiliated with

Also associated with

Rating

Trephine instrument and method for cutting annular holes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Trephine instrument and method for cutting annular holes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trephine instrument and method for cutting annular holes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1278040