Ratchet lock for an intramedullary nail locking bolt

Details Ratchet lock for an intramedullary nail locking bolt Ratchet lock for an intramedullary nail locking bolt

A - Human Necessities

61

B

A61B 17/00 (2006.01) A61B 17/17 (2006.01) A61B 17/56 (2006.01) A61B 17/58 (2006.01) A61B 17/92 (2006.01)

Patent

CA 2084553

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.

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