Resurfacing reamer with cutting struts

Details Resurfacing reamer with cutting struts Resurfacing reamer with cutting struts

2008-06-16

2011-12-13

Barrett, Thomas C. (Department: 3775)

Surgery

Instruments

Orthopedic instrumentation

C606S081000, C606S089000

Reexamination Certificate

active

08075563

ABSTRACT:
Disclosed is a guided orthopedic bone reamer (10a) for cutting a profile relief shape (21a) into a joint bone (20). The reamer (10a) has a cutting head (30a) and an axial guide assembly (70). The cutting head (30a) has a profile cutting form (24a) with a rim (34) and an apex (38a). The apex (38a) connects to the cutting form (24a) by a set of struts (94). An axial guide assembly (70) has one end (44a) fixed to the apex (38a) and at the other end has a bayonet mechanism (76) connectable to a drive handle. Rim cutting teeth (36a) are set into the rim (34) to cut a cylindrical profile (21a), and bevel cutting teeth (96) integral to the struts (94) cut a bevel (25) onto the cylindrical form (21a) cut into the bone (20). A guide pin bore (12a) passes through the apex (38a) and the guide assembly (70) concentric with the axis of rotation (18) to receive a guide pin (14) to guide the reamer (10a) in cutting alignment relative to the joint bone (20) to be cut.

REFERENCES:
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patent: 2005/0251145 (2005-11-01), Desarzens et al.
patent: 2006/0015111 (2006-01-01), Fenton
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patent: 1477120 (2004-11-01), None
patent: 2176903 (2001-12-01), None
patent: WO2004032767 (2004-04-01), None
patent: WO2008037984 (2008-04-01), None

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