07455696 is referenced by 66 patents and cites 182 patents.

The invention in some embodiments relates to a dynamic seal for a prosthetic knee. The dynamic seal in one embodiment is utilized to seal a magnetorheological fluid comprising a liquid and solid particles within a chamber of the knee. The dynamic seal embodiments are specially configured with a pre-loaded tensioned garter spring which has a coil spacing that is at least as large as the size of the particles or maximum size of the particles in the magnetorheological fluid. Desirably, this allows the magnetorheological fluid particles to flow in and out of the dynamic seal without clogging the seal and advantageously provides for a reliable dynamic seal.

Title
Dynamic seals for a prosthetic knee
Application Number
11/124621
Publication Number
7455696 (B2)
Application Date
May 6, 2005
Publication Date
November 25, 2008
Inventor
Henry H Hsu
Aliso Viejo
CA, US
Charles R Bisbee III
Mission Viejo
CA, US
Agent
Knobbe Martens Olson & Bear
Assignee
Össur hf
IS
IPC
A61F 2/68
A61F 2/64
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