Active shock module prosthesis
AssigneesOssur Hf, Van L. Phillips
InventorsVan L. Phillips, Hilary D. Pouchak
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Abstract
An impact-absorbing shock module comprises two pylons telescopingly engaged to permit axial and rotational motion therebetween. A resilient element, such as a spring-fluid combination, a plurality of interconnected disks, or a Belleville spring, provides axial shock absorption. A tubular torque-resisting cuff provides rotational resistance, or torsion-resistance. A fluid valve is optionally provided so that the fluid pressure may be varied to adjust the torsion resistance.
Claims28
An impact and torque absorbing prosthetic shock module, comprising:
- an outer pylon having a proximal end and a distal end, said outer pylon having at least one internally threaded surface;
- an inner pylon having a proximal end and a distal end telescopingly engaged with said outer pylon so that an annular interface is formed between said pylons, said inner pylon adapted to move axially and rotationally with respect to said outer pylon;
- a resilient element within said inner pylon having a proximal end and a distal end and being sized and configured to resist relative axial displacement of said pylons;
- a torque-resisting cuff connecting the pylons and providing torsional resistance to relative rotational motion between said pylons;
- and
- an internal support for said distal end of said resilient element, said internal support being threadingly engaged within said outer pylon.
The shock module of claim 2, wherein said resilient element further comprises a coil spring.
An impact and torque absorbing prosthetic shock module, comprising:
- an outer pylon having a proximal end and a distal end;
- an inner pylon having a proximal end and a distal end telescopingly engaged with said outer pylon so that an annular interface is formed between said pylons, said inner pylon adapted to move axially and rotationally with respect to said outer pylon;
- a resilient element within said inner pylon having a proximal end and a distal end and being sized and configured to resist relative axial displacement of said pylons;
- a torque-resisting cuff connecting the pylons and providing torsional resistance to relative rotational motion between said pylons;
- wherein
- said cuff has a proximal end connected to the proximal end of said inner pylon and a distal end connected to said proximal end of said outer pylon;
- and wherein
- the shock module further comprises ring clamps that clamp said cuff to said pylons and provide air tight seals with respect to the entire circumference of said pylons.
Dependencies are inferred from the claim text.