Therapeutic traction apparatus for applying traction to a patien

Details Therapeutic traction apparatus for applying traction to a patien Therapeutic traction apparatus for applying traction to a patien

1977-10-12

1981-03-31

Yasko, John D.

Surgery

Truss

Perineal

A61H 102

Patent

active

042587077

ABSTRACT:
A traction apparatus for medical purposes, wherein an adjustable traction generated by an electromotor is transmitted to the body of a patient by means of a drawing cable. The traction appearing in the drawing cable is continuously measured and compared with the selected traction magnitude, and the drawing cable is wound or unwound by the electromotor in dependence on the difference established by the comparison until this difference has at least approximately been reduced to zero. Preferably, an intermittent traction is exerted, in such manner that holding periods in which the full traction is applied are interrupted by rest periods, in which an adjustable rest force different from zero is exerted. The traction appearing in the drawing cable may be measured by passing the cable over a shaft on which a flexional load is exerted by the traction and by arranging strain gauges on said shaft.

REFERENCES:
patent: 2298222 (1942-10-01), McShane
patent: 2609181 (1952-09-01), Jaeschke
patent: 2811965 (1957-11-01), Richards
patent: 2940442 (1960-06-01), Wilhelm
patent: 3168094 (1965-02-01), Hamaki
patent: 3710787 (1973-01-01), Rabjohn
patent: 3786803 (1974-06-01), Petulla
patent: 3835847 (1974-09-01), Smith
patent: 3942081 (1976-03-01), Liska et al.
Mejnanical Engineers Hand Book, Lionel S. Marks, pp. 2000-20007, 4th ed., Jun. 1941.
Advertisement, Hausted Manufacturing Co., Medina, Ohio Journal Bone and Joint Surgury Jul., '56, p. 8 vol. 38A.

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