The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1991
Filed:
Jan. 04, 1990
Intermedics Orthopedics, Inc., Austin, TX (US);
Abstract
A pneumatically driven orthopedic broach inserter comprising a continuously reciprocating piston which strikes a proximal anvil during each cycle. The impact of the piston with the proximal anvil drives the broach out of a bone. To drive the broach into the bone, a surgeon pushes on the power broach inserter, bringing a distal anvil into the path of the piston, and creating a forward action which dominates over the on-going reverse action produced by the piston striking the proximal anvil. The piston is provided with a low-friction sleeve so that completely oilless operation is possible. A fast-acting chuck having a key and a wedge is provided whereby broaches of different size can be quickly attached to the power broach inserter. In addition, means whereby the relative angular orientation between the broach and the power broach inserter may be changed continuously as the surgeon presents the broach toward the bone, but whereby the angular orientation is fixed as the surgeon pushes the broach into the bone is provided.