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:
Dec. 26, 1995
Filed:
Dec. 23, 1991
Applicant:
Inventors:
Assignee:
Zimmer, Inc., Warsaw, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ; A61B / ;
U.S. Cl.
CPC ...
606 62 ; 606 96 ; 606 97 ;
Abstract
This invention includes a ratchet wheel carried by the locking bolt and engaged by a pin carried by the targeting guide. The pin and ratchet wheel permit the locking bolt to rotate in a tightening direction and prevent the bolt from rotating in a direction to cause the bolt to loosen. Therefore, during impact, the bolt is prevented from loosening. After the IM rod is inserted and the surgeon wants to remove the targeting guide, the pin is shifted and locked into a disengaged position with the ratchet wheel to permit the locking bolt to rotate without obstruction. The ratchet pin may be locked in its retracted position.