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Apparatus for implantation and extraction of osteal prostheses

  • US 5,284,484 A
  • Filed: 05/29/1991
  • Issued: 02/08/1994
  • Est. Priority Date: 02/06/1990
  • Status: Expired due to Term
First Claim
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1. An adaptor for connecting an ultrasonic device to a prosthesis including a lower portion and a ball having a given diameter at an exposed end thereof, said adaptor comprising:

  • a base portion having an external circumference, said base portion being provided with a first recess having a diameter closely matching the diameter of the ball, said external circumference of said base portion being provided with at least a second recess to provide clearance for the lower portion of the prosthesis;

    a plurality of cap screws provided in corresponding apertures in said base portion for causing a high compression interface between an upper portion of the ball of the prosthesis and an internal surface of said first recess, a face of each of said cap screws contacting the lower edge of the ball at a point below a mid-point of the diameter of the ball; and

    a connector coupled to said base portion and adapted to connect said adapter to the ultrasonic device.

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