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US Patent 4289124 - Surgical appliance for the fixation of fractured bones
US Patent Issued on September 15, 1981
Estimated Patent Expiration Date:
September 18, 1998Estimated 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.
Estimated Patent Expiration Date:
September 18, 1998Estimated 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.AbstractA 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. | InventorApplicationNo. 05/943213 filed on 09/18/1978US Classes:606/60, Internal fixation means606/218, Screw, rack and pinion or pawl and racket606/73Threaded fastener elementExaminersPrimary: Michell, Robert W.Assistant: Shedd, C. W. Attorney, Agent or FirmUS Patent References583455, 1201864, 2110414, 2439995, 3680553, 3807394, 3862631, 3900025, 4187841Bone compression or distraction deviceIssued on: 02/12/1980 Inventor: Knutson International ClassesA61B 17/68 (20060101)A61B 17/72 (20060101) |
