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. 26, 1999
Filed:
Jul. 28, 1998
Applicant:
Inventors:
Aaron A Hofmann, Salt Lake City, UT (US);
Charles H Perrone, Jr, Austin, TX (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
623 23 ; 623 16 ; 606 95 ;
Abstract
A self-venting cement restrictor or bone plug is provided for insertion into the medullary canal of a patient bone during orthopedic surgery. The cement restrictor includes a valve member which accommodates passage of air and body fluids therethrough as the cement restrictor is placed to avoid pressurizing the downstream medullary space. An installation tool is manipulated in the course of cement restrictor installation for shifting the valve member to a closed position, whereby the cement restrictor retains bone cement introduced subsequently under pressure within the upstream medullary space.