Surgery – Truss – Pad
Patent
1976-07-02
1979-10-30
Michell, Robert W.
Surgery
Truss
Pad
2240, 66178A, A61F 1300
Patent
active
041724569
ABSTRACT:
A full-length, anti-embolism stocking extends over a wearer's leg and is adapted to exhibit a controlled, graduated compressive force on the leg. The compressive force is greatest in the ankle area and diminishes over the length of the stocking to a minimum at the top. Three distinct and defined sections make up the stocking, a lower section covering the calf and foot has a one-way stretch in a circumferential direction, an upper section covering the thigh also has a one-way stretch in a circumferential direction, and an intermediate section covering the knee has a two-way stretch. The knee and calf-foot sections comprise a fabric formed with a jersey stitch incorporating an elastomeric yarn. In the knee section the elastomeric yarn is knit-in to provide the two-way stretch and in the calf-foot section it is laid-in to provide only a one-way, circumferential stretch. The upper thigh section comprises a fabric formed by a rib knit with an elastomeric yarn laid-in to provide a one-way stretch in a circumferential direction. The elastomeric yarn is laid-in and knit-in under tension and the tension is varied to vary the amount of elastomeric yarn going into the stocking from a minimum in the foot-ankle area to a maximum in the upper thigh section to provide the graduated compressive force.
REFERENCES:
patent: 940585 (1909-11-01), Drennan
patent: 1890299 (1932-12-01), Mutchler et al.
patent: 2169204 (1939-08-01), Hinchliff
patent: 2213144 (1940-08-01), McAdams
patent: 2257719 (1941-09-01), Smith
patent: 2277012 (1942-03-01), Blount
patent: 2277766 (1942-03-01), Klumpp
patent: 2807946 (1957-10-01), Virchaux
patent: 3443404 (1969-05-01), Knohl
Michell Robert W.
Thaler Michael H.
Zens Hosiery Mgf. Co., Inc.
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