Surgery – Instruments – Suture retaining means
Patent
1995-05-19
1996-11-05
Buiz, Michael Powell
Surgery
Instruments
Suture retaining means
606 65, 606 73, 623 13, A61B 1700
Patent
active
055711391
ABSTRACT:
A cannulated bone screw for anchoring bidirectional suture threads to bone is provided, comprising a biocompatible body having a proximal end and a distal end, the body including exterior screw threads, preferably self-tapping, for inserting and retaining the body into the bone; a passageway extending through the body, the passageway including a central portion, a proximal portion, and preferably a distal portion, the central portion being sized to receive a suture thread therethrough, the proximal and distal portions each being sized to receive a suture thread knot, the central portion being sized smaller than the proximal and distal portions, the central portion being sufficiently small as to prevent a suture thread knot from being drawn therethrough; and a drive socket, formed into the proximal end of the body, the drive socket being sized to prevent a drive tool from contacting a suture thread knot within the proximal portion of the passageway. The body of the bone screw may be either cylindrical in shape, or it may be tapered with variably pitched screw threads. The bone screw is constructed of a biocompatible material, such as a metal, a non-absorbable polymer, or a bioabsorbable material, where the biocompatible material is coated with a bioabsorbable coating having a low coefficient of friction. The bioabsorbable coating may include one or more compounds, such as a pharmaceutical or selected bone growth factors. A method for using the bidirectional bone screw is also provided.
REFERENCES:
patent: 4711232 (1987-12-01), Fischer et al.
patent: 5156616 (1992-10-01), Meadows et al.
patent: 5354299 (1994-10-01), Coleman
patent: 5364400 (1994-11-01), Rego, Jr. et al.
patent: 5456685 (1995-10-01), Huebner
patent: 5486197 (1996-01-01), Le et al.
A New Bone Anchor for Re-Attachment of Soft Tissue and Management of Fractures and Dislocations, Surgery Technology Int'l III, Nov. 1994, pp. 593-602; William S. Ogden.
Acumed, Inc., Beaverton, Oregon; promotional brochure for Acutrak headless compression screw system; Jan. 17, 1994.
Buiz Michael Powell
Delaune Warner J.
Schmidt Jeffrey A.
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