IMPLANT WITH AN INTERFERENCE FIT FASTENER

摘要

An implant with an interference fit fastener for attaching the implant to a bone. The interference fit prevents backout of the fastener after the attachment. The implant may include a passage with a first end and second end. The passage may include a first interference section between the first and second ends. A fastener with an elongated shape may be sized to extend through the passage to attach the implant to the bone. The fastener may include a second interference section. During insertion of the fastener through the passage and into the bone, the second interference section of the fastener may contact against and modify or be modified by the first interference section of the passage. This modification may create the interference fit between the implant and the fastener that prevents backout. The interference sections may remain in contact or may move apart once the fastener is fully attached to the bone.

主权项

1. A medical device for treating a patient comprising:
an implant; a solid, non-threaded passage that extends through the implant and includes a first interference section with a first diameter; a fastener with an elongated shape and a distal end and a proximal end, the fastener including a second interference section located between the ends that includes a second diameter that is greater than the first diameter; one of the first and second interference sections constructed from a harder material and the other constructed from a softer material; a surface of the interference section constructed from the softer material being modified by insertion of the fastener into the passage to create an interference fit between the implant and the fastener.