Surgical compression-distraction instrument
Patent 3977397 Issued on August 31, 1976. Estimated Expiration Date: 
August 31, 1993. 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.
August 31, 1993. 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 2055024 2238869 2406987 3727610 InventorsApplicationNo. 05/527865 filed on 11/27/1974US Classes:606/57, Compression or distraction mechanism606/56Ring frameExaminersPrimary: Yasko, John D.Attorney, Agent or FirmInternational ClassesA61B 17/60 (20060101)A61B 17/62 (20060101) AbstractAn instrument for treating injuries and diseases of bones and joints which incorporates rings with needles passed through bone fragments. Adjacent rings are interconnected by longitudinal permanently sprung members, viz. helical springs and/or rods connected with the rings by means of nuts. To stabilize the structure, strengthening rings composed of separate arches and carrying locking means for additional needles may be inserted into the instrument. | |
