U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Surgical appliance for the fixation of fractured bones

Patent 4289124 Issued on September 15, 1981. Estimated Expiration Date: Icon_subject September 18, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

583455

1201864

2110414

2439995

3680553

3807394

3862631

3900025

Bone compression or distraction device Patent #: 4187841
Issued on: 02/12/1980
Inventor: Knutson

Inventor

Application

No. 05/943213 filed on 09/18/1978

US Classes:

606/60, Internal fixation means606/218, Screw, rack and pinion or pawl and racket606/73Threaded fastener element

Examiners

Primary: Michell, Robert W.
Assistant: Shedd, C. W.

Attorney, Agent or Firm

International Classes

A61B 17/68 (20060101)
A61B 17/72 (20060101)

Abstract

A surgical appliance for the fixation of fractured bones includes two anchoring members each adapted to be imbedded into a respective segment of a fractured bone. Each anchoring member has a head portion which extends from the bone, the head portion including a channel therethrough to receive a bolt. In one embodiment, one of the channels is threaded. The bolt, which is formed of a shaft and a head, has at least a portion of the shaft provided with screw threads which mate with the threads of the one channel. The shaft of the bolt is adapted to pass through the channel of the first anchoring member and to be threadedly received in the channel of the second anchoring member so as to exert a compressional force on the segment of the fractured bone when the bolt is tightened. In another embodiment, the channels of both heads of the anchoring members are provided with screw threads.

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