Multipolar joint endoprosthesis
OwnerJohn A. McLaughlininventor
Life of this patent
Estimating the term…
Abstract
A multipolar joint endoprosthesis for joint replacement includes multiple wedge shaped, cylindrical components attached in sequence to proximal and distal components (designed to be affixed to bone) each inseparable except by surgical manipulation and each freely, passively rotating about axes perpendicular to its planes of effacement with adjacent components. This passive rotation of one or more of the wedge-shaped components alters the angular orientation of the proximal and distal components thereby allowing range of motion of the joint in question.
Claims18
A joint endoprosthesis comprising:
- first and second anchoring components, each of said components including a mounting face having engaging structure;
- a plurality of obliquely truncated cylindrical members interconnecting said first and second anchoring components, each of said truncated cylindrical members including structure for interlocking with the engaging structure of said anchoring components and configured to permit continuous relative multiplanar movement of the anchoring components during use.
A joint endoprosthesis comprising:
- a first anchoring component configured to be affixed within a body joint and having a swivel receptor formed therein;
- a second anchoring component configured to be affixed to a bone and having a swivel positioned thereon;
- first, second and third obliquely truncated cylindrical members positioned between said first and second anchoring components, each of said members having a first mounting face having a swivel member positioned thereon and a second mounting face having a swivel member receptor formed therein;
- wherein the swivel member positioned on said first truncated cylindrical member is configured to engage the swivel member receptor formed in said first anchoring component, the swivel member positioned on said second truncated cylindrical member is configured to engage the swivel member receptor formed in the first truncated cylindrical member, the swivel member positioned on the third truncated cylindrical member is configured to engage the swivel member receptor formed in the second truncated cylindrical member, and the swivel member positioned on the second anchoring component is configured to engage the swivel member receptor formed in the third truncated cylindrical member, such as to permit continuous relative multiplanar movement of the anchoring components during use.
A joint endoprosthesis comprising:
- first and second anchoring components, each of said components having engaging structure;
- a plurality of obliquely truncated cylindrical members interconnecting said first and second anchoring components, each of said truncated cylindrical members being rotatably connected to at least one adjacent truncated cylindrical member, one of said truncated cylindrical members being connected to said engaging structure of said first anchoring component and another of said truncated members being connected to said engaging structure of said second anchoring component to thereby permit continuous relative multiplanar movement of said anchoring components during use.
Dependencies are inferred from the claim text.