Back to results
US 6,248,108 B1Granted
Bioabsorbable surgical screw and washer system
AssigneeBionx Implants Oy
InventorsPertti Törmälä, James P. Tasto
Life of this patent
Estimating the term…
Abstract
An at least partially bioabsorbable surgical fastener or device formed in the shape of a screw and washer system and the methods for manufacturing and using the same. The surgical fastener is particularly but not solely intended to be used to attach rotator cuff tendons to bone.
Claims9
A surgical fastener comprising:
- an at least partially bioabsorbable screw made from a bioabsorbable material that is oriented or fibrillated comprising:
- a distal end, a proximal end having a head having a first diameter and a height, a shank having a second diameter and connected to said head, and at least one thread having an outer diameter and an inner diameter, wherein at least a portion of said thread has a height of at least 1.5 mm;
- an at least partially bioabsorbable annular washer having upper and lower sides and a opening therethrough, said upper side facing said head of said screw,
- said shank of said screw passing through said opening in said washer, and
- said opening having a third diameter that is:
- larger than the second diameter of said shank;
- smaller than the first diameter of said head;
- and smaller than the outer diameter of said thread;
- wherein the washer degrades faster in vivo than the screw.
6 more elements
Dependencies are inferred from the claim text.