Surgery – Instruments – Orthopedic instrumentation
Patent
1990-10-25
1992-05-12
Hafer, Robert A.
Surgery
Instruments
Orthopedic instrumentation
606102, 606103, 606 79, A61B 1700
Patent
active
051123347
ABSTRACT:
The present invention is directed to a new and improved surgical instrument capable of facilitating as well as accurately assisting in the achieving of acute angle osteotomy cuts in bone. The benefits are achieved as a result of the instrument's structural elements comprising a calibration arm elevated above a pedestal member by way of an elevational member, there being structurally affixed to said pedestal member an aligning member. By having structurally affixed to the pedestal member by way of pin fastening means a second pedestal member capable of pivotal movement about the pin fastening means and which is capable of interaction with the calibration arm of the surgical instrument as well as defining an additional aligning member adjacent to the pin fastening means, there is achieved the ability to selectively define between the respective aligning members of the surgical instrument an acute angle that is selectively and accurately determined for purposes of acting as a guide for making acute angle osteotomy cuts in bone.
REFERENCES:
patent: 2136414 (1938-11-01), Clements
patent: 2250638 (1940-02-01), Kubinec
patent: 3740779 (1973-06-01), Rubricuis
patent: 4349058 (1982-09-01), Comparetto
Alchermes Stephen L.
Lombardo Mark A.
Hafer Robert A.
Kenealy David
Morganstern Allen R.
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