Amputation apparatus
First Claim
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1. An amputation apparatus for use with a prosthesis attachable externally to a stump having a bone, the amputation apparatus comprising:
- a cap securable to the end of the bone in the stump, the cap having an open top, a bottom and side walls sized to fit externally over the end of the bone; and
a plate disposable completely internally within the stump and attachable to the cap, the plate extending radially outward a substantial distance beyond the outer periphery of the cap to define a large weight bearing surface at the end of the bone to evenly distribute forces over the entire end of the stump.
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Abstract
Amputation apparatus for use with an internal prosthesis attachable to the end of a stump having an outwardly extending bone. The amputation apparatus includes a cap having an internal cavity for insertion over the bone and an opposed outwardly extending boss. A plate having an internal cavity is mountable over the outwardly extending boss of the cap. The plate has a radial extent substantially greater than the radial extent of the cap to define an equal weight distribution surface for internal and external forces over the entire bottom surface of the stump.
42 Citations
15 Claims
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1. An amputation apparatus for use with a prosthesis attachable externally to a stump having a bone, the amputation apparatus comprising:
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a cap securable to the end of the bone in the stump, the cap having an open top, a bottom and side walls sized to fit externally over the end of the bone; and a plate disposable completely internally within the stump and attachable to the cap, the plate extending radially outward a substantial distance beyond the outer periphery of the cap to define a large weight bearing surface at the end of the bone to evenly distribute forces over the entire end of the stump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An amputation apparatus for use with an external prosthesis attachable to a stump having a bone, the amputation apparatus comprising:
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a cap having first and second portions, the second portion having a smaller diameter than the first portion which defines an outwardly extending boss on the cap, an internal cavity formed in the cap sized to fit externally over the end of the bone; a plate having top and bottom surfaces and a centrally located boss formed on the top surface, the plate extending radially outward a substantial distance beyond the periphery of the cap to evenly distribute forces from the prosthesis over the end of the stump, the plate being disposed completely internally within the stump; a first cavity formed within the boss on the plate for insertion over the boss on the cap; first adhesive means for securing the cap and plate together; and second adhesive means for securing the cap on the bone. - View Dependent Claims (13)
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14. An amputation apparatus for use with an extenral prosthesis attachable to a stump having a bone, the amputation apparatus comprising:
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a mesh member securable to the tissue surrounding the bone at the end of the stump, the mesh member including a depending lower end portion; a cap having first and second portions, the second portion having a smaller diameter than the first portion which defines an outwardly extending boss on the cap, the cap having an internal cavity formed on the end of the first portion for external insertion about the bone; a cable connector removably receivable within the depending flanges on the cap to releasably mount the cap on the depending lower end portion of the mesh member; and a plate having top and bottom surfaces and a centrally located boss formed on a top surface, the plate extending radially outward a substantial distance from the periphery of the cap to evenly distribute forces from the prosthesis over the end of teh stump, the plate being disposed completely internally within the stump, a first cavity formed within a boss on the plate for insertion over the boss on the cap; and adhesive means for securing the cap and plate together.
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15. The amputation apparatus of claim 17 further including:
a layer of compressible material disposed within the cavity in the cap for surrounding the end of the bone of the stump.
Specification