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Curved drill attachment for bone drilling uses

  • US 4,265,231 A
  • Filed: 04/30/1979
  • Issued: 05/05/1981
  • Est. Priority Date: 04/30/1979
  • Status: Expired due to Term
First Claim
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1. A drilling attachment for a drill motor having rotatable means operable to grip or release a burr or drill, said attachment for use in surgical procedures requiring a passageway through bone with the ends of the passageway not in alignment, said attachment including a rigid cannula including a proximal end portion a having a longitudinal axis, said proximal end portion being attachable to the housing of a drill motor and freely receptive of the gripping means thereof, a curved intermediate portion of said cannula extending radially with respect to said longitudinal axis, and a curved distal portion of said cannula lying in a plane which is perpendicular to said longitudinal axis of said proximal portion and substantially concentric with respect to said axis, a bone-cutting burr exposed at the distal end of said distal portion, and a burr-rotating flexible shaft within said cannula, said shaft being anchored to said burr at said distal end and attached to a rod at said proximal end, which rod is connectable to said rotatable gripping means of said drill motor, whereby said drilling attachment and said burr are dimensioned in such fashion that when used a passageway is provided through a bone appropriate for the passage of a curved surgical needle therethrough.

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