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High pressure cement injection device for bone repair

  • US 6,217,581 B1
  • Filed: 07/02/1999
  • Issued: 04/17/2001
  • Est. Priority Date: 10/18/1995
  • Status: Expired due to Fees
First Claim
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1. An adaptor for injecting cement dispensed under high pressure from a cement gun into a bone cavity or into an interstice in a joint formed between a prosthetic pin and cement in the cavity anchoring the pin in the cavity thereby to repair the joint comprising an elongate body with leading, penetrating and rear, connecting ends, the body having a pointed penetrating shank which tapers outward as it extends rearward from the leading end and is formed with an external self-tapping screw thread and a fingerpiece protruding radially outward adjacent the rear end comprising a pair of wings which protrude forward while diverging in opposite radial directions and an internal cement passageway extending axially completely through the body communicating with leading and rear ends, the rear end being provided with means for attachment to a zerk attached to a cement outlet of the gun so that, with the zerk attached to the rear end, the leading end can be manually screwed into sealing engagement with a bore tapped into the bone and an outlet hose of the cement gun secured to the zerk so that cement dispensed under high pressure from the gun will be injected through the adaptor into the cavity or interstice to fill and seal the interstice securing the pin in the bone cavity.

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