Surgery – Truss – Perineal
Patent
1979-04-09
1981-03-24
Michell, Robert W.
Surgery
Truss
Perineal
128 92R, 411437, A61F 500
Patent
active
042574099
ABSTRACT:
The subject of the invention is a device for surgical treatment of spinal curvatures, especially of scoliotic and kyphotic curvatures.
The device is provided with hooks varying in design and a distraction spacer, and comprises a longitudinal contractor fixed in holes and a transverse contractor adjusting the position of the spacer in relation to the longitudinal contractor.
The longitudinal contractor is in the form of a profiled bar 1 provided at one end with a bearing surface 2 and at the other end--with a longitudinal cut forming tips 3 and 4 which are plastically deformed after placing and fixing of the bar 1 in hooks. The transverse contractor comprises a threaded pin 9 provided at one end with a fixed catch 10 and at the other end--with a tilting catch 11 with a threaded lock provided at one end with a bevelled internal surface 12 and at the other end--with a recess which has protruding elements 13. The said elements, after plastic deformation, set and block the position of the lock on the pin.
REFERENCES:
patent: 657256 (1900-09-01), Tipton
patent: 752074 (1904-02-01), Jackson
patent: 795242 (1905-07-01), Weiss
patent: 1638165 (1927-08-01), Rau
patent: 3878757 (1975-04-01), Puklus, Jr.
Cotrel, Techniques Nouvelles dans le Traitement de la Scoliose Idiopatique; Internal'l. Ortho. SICOT, vol. 1, No. 4, 1978, Pub. Springer Internat'l.
Bacal Kazimierz
Wierusz Lech
Michell Robert W.
Rose Arthur S.
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