Appliance for correction of spinal curvatures

Details Appliance for correction of spinal curvatures Appliance for correction of spinal curvatures

1979-05-08

1981-06-09

Michell, Robert W.

Surgery

Truss

Pad

128 69, 128 92E, 81302, 29268, A61B 1700, A61F 500

Patent

active

042718368

ABSTRACT:
This invention relates to an appliance for correction of spinal curvatures, performed in course of treatment by means of surgical struts.
The appliance has a form of a double-arm lever making possible to extend the effective length of the strut placed in the patient's body, whereby one arm of said lever is ended with a holder for clamping the hook of the strut, the other arm being provided with a screw adjusting the spacing of the arms and the displacement of the hook along the strut. This arm is cut longitudinally, one part whereof being provided with a tapped hole wherein said adjusting screw operates, whereas the other part is provided with a port and with a pivot whereon the link mechanism and the pointer of a dynamometer are mounted. The side surface of said arm carries a scale whereover the tip of said pointer travels indicating the value of the force being applied to the operator.

REFERENCES:
patent: Re6364 (1875-04-01), Armstrong
patent: 187551 (1877-02-01), O'Donnell
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patent: 2002021 (1935-05-01), Rouse
patent: 2895216 (1959-07-01), Hirsch
patent: 4050464 (1977-09-01), Hall
Zielke K. et al., Special Instruments for Insertion of the Harrington Rod; from Proceedings of 12th Congress of the Internat'l Society of Orthopedic Surgery & Traumatology, 1973.
Harrington, P.; Design & Specifications of Instruments and Terminology; 1968, pp. 1-57.
Harrington, P.; Biomechanics of the Spine, Chandler Memorial lecture; Chicago Orth. Society, 3/10/61.
Diary of 17th Sci. Congress, of Polish Orth. & Traum. Assoc., "Surgical Treatment of Scoliosis by Harring Method," 1970.
Polish Patent Application #P-178,097 2/17/75, Author Unknown.
Zimmer Compression Set., Journal of Bone & Joint Surgery, British vol. 50-B-No. 2; May 1968.

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