Surgery – Truss – Perineal
Patent
1988-01-07
1989-09-05
Burr, Edgar S.
Surgery
Truss
Perineal
128 78, 2 44, 2 45, A61F 500, A61F 501, A61F 502
Patent
active
048628786
ABSTRACT:
An orthopedic prosthesis including a trunk engaging means, an arm engaging means and a lift assist means. The trunk engaging means includes a shoulder engaging means comprised of a strap which passes over the injured shoulder and a support plate attached to each end of the shoulder strap, the support plates being positioned in front of and behind the shoulder to be supported. The trunk engaging means also includes a lateral support strap, one end of the strap being connected to one of the support plates and around the body of the wearer under the arm opposite of the shoulder to be supported where it is connected to the second support plate. The arm engaging means includes a strap passing around the humerus of the arm of the wearer. The lift assist means utilizes two pulley systems, one mounted on the arm engaging means and one on the support plate of the shoulder engaging means. The lift assist means further includes an elasticized cord anchored to the arm engaging means which passes, in order, through the shoulder pulley system, the arm pulley system and is anchored on the other support plate. The elastic cord is in tension when the wearer's arm is at the side of the body. As the arm is raised, the energy stored in the arm is transferred through the pulley system, which operates as a variable lever, to the shoulder muscles thereby aiding in the lifting of the arm up and away from the side of the wearer throughout a full range of locations of the arm relative to the wearer's body, and at the same time allow unrestricted lateral movement of the arm.
REFERENCES:
patent: 559024 (1896-04-01), Bessing
patent: 3499441 (1970-03-01), Hall
patent: 3906944 (1975-09-01), Christen
patent: 4180870 (1980-01-01), Radulovic et al.
patent: 4559932 (1985-12-01), Salort
patent: 4644939 (1987-02-01), Coleman
Davison Steven W.
McLeod William D.
Asher Kimberly L.
Burr Edgar S.
Richards Medical Company
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