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Ratchet lock for an intramedullary nail locking bolt

  • US 5,478,341 A
  • Filed: 12/23/1991
  • Issued: 12/26/1995
  • Est. Priority Date: 12/23/1991
  • Status: Expired due to Term
First Claim
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1. A locking system for a locking bolt of a proximal targeting guide for an intramedullary rod and a locking bolt, said locking system comprising a ratchet wheel carried by said locking bolt and rotational fixed thereto, said ratchet wheel including a plurality of teeth about a perimeter of said wheel, a locking pin carried by said guide for engagement with said wheel and shiftable between an extended position wherein said pin engages said wheel and seats within a groove formed between adjacent pairs of teeth and a retracted position wherein said pin is disengaged from said wheel, wherein with said pin in said extended position said locking bolt is permitted to rotate in only one direction.

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