Placebo-type compression orthosis

Details Placebo-type compression orthosis Placebo-type compression orthosis

2007-01-30

2007-01-30

Brown, Michael A. (Department: 3772)

Surgery: splint, brace, or bandage

Bandage structure

Support covering

C602S061000, C602S062000, C602S063000, C602S075000

Reexamination Certificate

active

10204410

ABSTRACT:
The surgical stocking made by knitting a knitting yarn together with an extensible weft yarn is a placebo type stocking suitable for exerting compressive pressure at the ankle of less than 8 mmHg, and preferably less than 5 mmHg. It is intended for double blind tests versus placebo using a product having the same structure, the same visual appearance, and the same feel as an active stocking but compression that is negligible and thigh/ankle degressivity that is close to unity. The weft yarn presents mass per unit length lying in the range 250 dtex to 600 dtex, preferably in the range 350 dtex to 500 dtex, with the proportion of elastic material being less than 25% and preferably less than 20% of the total weight of the thread. Its elongation capacity lies in the range 200% to 350%, preferably in the range 200% to 300%, but its springiness (II) is very different from that of an elastic stocking (I).

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