A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/64 (2006.01) A61F 2/68 (2006.01) A61F 2/50 (2006.01) A61F 2/74 (2006.01) A61F 2/76 (2006.01)
Patent
CA 2172000
A prosthetic brake joint includes an upper joint portion, a lower joint portion, and a joint shaft which pivotably connects the two joint portions together. The joint shaft, designed as a brake shaft, is connected to the lower joint portion for fixed rotation with the lower joint portion. A brake bushing surrounds and rotates about the joint shaft and operates as a bearing. The brake bushing is connected to a clamping portion for fixed rotation with the clamping portion. The upper joint portion is mounted to the clamping portion in an articulated manner via a pivot axle. Under loading, the upper joint portion impacts the clamping portion and thus the brake bushing, and thereby exerts a braking force on the joint shaft. The brake bushing is surrounded by an annular brake chamber which is filled with an incompressible medium. The annular brake chamber communicates, for purposes of fluid exchange, with a closed hollow space integrated in the clamping portion. A pressure piston supports the upper joint portion and protrudes into the closed hollow space to impact the incompressible medium which compresses the brake bushing against the joint shaft to brake rotation of the prosthetic knee joint.
Kirby Eades Gale Baker
Otto Bock Orthopadische Industrie Besitz- Und Verwaltungs-Komman
Otto Bock Orthopadische Industrie Besitz-Und Verwaltungs-Kommand
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