Surgical expansion fasteners
AssigneeBioDynamics LLC
InventorsJames Ralph, Stephen Tatar, Thomas Troxell
Life of this patent
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Abstract
A biocompatible surgical fastener, comprising a sleeve and a screw or a pin, which expands when it is implanted in a patient. The sleeve is first implanted in a pre-drilled hole in the operating area of a patient, usually in a bone, cartilage or a bone and cartilage. When a screw or a pin is installed in the sleeve, the sleeve is caused to expand thereby stabilizing the fastener in the operating area. In many embodiments the screw or pin can be removed and reinserted without disturbing the tissue in the operating area. The surgical fastener can be used to repair tissue or to secure other implant devices in a patient.
Claims26
A biocompatible sleeve having a proximal end and a distal end and an outer surface disposed between the proximal end and the distal end, the proximal end having a flange thereon,
- a bore adapted to receive a screw or a pin and extending through the flange toward the distal end and terminating at or before the distal end,
- at least two longitudinal slits extending from the bore through the outer surface, said slits defining, in the sleeve, blade sections extending from one slit to another,
- the outer surface having threads or one or more wings disposed thereon,
- wherein the blade sections are caused to move laterally in a direction away from the bore when a screw or a pin is inserted into the bore.
A surgical fastener comprised of biocompatible material and further comprising:
- a sleeve having a proximal end and a distal end and an outer surface disposed between the proximal end and the distal end, the proximal end having a flange thereon;
- a bore extending through the flange toward the distal end and terminating at or before the distal end;
- at least two longitudinal slits extending from the bore through the outer surface, said slits defining, in the sleeve, blade sections extending from one slit to another, the outer surface of the sleeve having threads or one or more wings disposed thereon;
- a screw which can be threaded into the bore or a pin which can be inserted into the bore from the proximal end toward the distal end causing the blade sections to move in a direction laterally away from the bore.
A surgical fastener comprised of biocompatible material and further comprising:
- a sleeve having a portion of its outer surface in the shape of a frustum, the frustum having a proximal end and a distal end, each end having a diameter wherein the diameter at the proximal end is larger than the diameter at the distal end, a flange affixed at the proximal end, a bore extending through the flange and the frustum towards the distal end and terminating at a foot or web comprising the distal end, at least two longitudinal slits extending from the bore through the outer surface of the frustum, said slits defining, in the frustum, blade sections extending from one slit to another, the outer surface of the frustum being threaded or having one or more wings disposed thereon;
- a screw which can be threaded into the bore or a pin which can be inserted into the bore from the proximal end causing the foot or web to break and the blade sections to move in a direction laterally away from the bore.
A biocompatible sleeve having a proximal end and a distal end and an outer surface disposed between the proximal end and the distal end, the proximal end having a flange thereon,
- the outer surface having threads or one or more wings disposed thereon,
- a bore extending through the flange into a cavity,
- a material optionally disposed in the cavity and selected from the group consisting of active and inactive ingredients and pharmaceutical materials and combinations thereof;
- a plug disposed in the bore.
Dependencies are inferred from the claim text.