Patent US5507818A successfully refreshed from Google Patents.
US5507818A
Expired / Lapsed
US
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Multipolar joint endoprosthesis
Assignee: Individual
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Filing: 1994-06-30
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Granted: 1996-04-16
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Expires: 2014-06-30
Abstract
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.
Inventors
- 👤 John A. McLaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/30721; A61F2/30734; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61F2/36; A61F2/3662; A61F2/40; A61F2/4081; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30115; A61F2002/30199; A61F2002/302; A61F2002/30224; A61F2002/3023; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30362; A61F2002/30364; A61F2002/30383; A61F2002/30403; A61F2002/30433; A61F2002/30476; A61F2002/30507; A61F2002/30535; A61F2002/30537; A61F2002/30538; A61F2002/3054; A61F2002/30599; A61F2002/30604; A61F2002/30621; A61F2002/30639; A61F2002/30736; A61F2002/3208; A61F2002/3241; A61F2/34; A61F2002/3401; A61F2/3609; A61F2002/3625; A61F2002/365; A61F2002/3652; A61F2/4014; A61F2002/4029; A61F2002/4037; A61F2002/4044; A61F2/46; A61F2002/4631; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0041; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0065; A61F2230/0069; A61F2250/00; A61F2250/0004; A61F2250/0006; A61F2250/0058; A61F2250/006; A61F2250/0063
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
66 words
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.
Claim 2
Dependent Claim
66 words
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.
Claim 3
Dependent Claim
35 words
A joint endoprosthesis according to claim 1 wherein each of said truncated cylindrical members includes a first and a second mounting face, said interlocking structure being positioned on said mounting faces of said cylindrical members.
Claim 4
Dependent Claim
35 words
A joint endoprosthesis according to claim 1 wherein said engaging structure comprises a swivel member formed on one of said anchoring components and a swivel member receptor formed on the other of said anchoring components.
Claim 5
Dependent Claim
15 words
A joint endoprosthesis according to claim 3 wherein said swivel member includes a rotatable bearing.
Claim 6
Dependent Claim
116 words
A joint endoprosthesis according to claim 3 wherein each of said truncated cylindrical members include first and second mounting faces, said interlocking structure being positioned on said first and second mounting faces of said truncated cylindrical members, and wherein said interlocking structure comprises a swivel member positioned on one of said first and second mounting faces and a swivel member receptor formed on the other of said first and second mounting faces, wherein each of said swivel members of said engaging structure and said interlocking structure is configured to be received within a respective one of said swivel member receptors of said engaging and interlocking structure to permit said relative multiplanar movement of the anchoring components.
Claim 7
Dependent Claim
33 words
A joint endoprosthesis according to claim 2 wherein said first mounting face of each of said truncated cylindrical members is angled with respect to the second mounting face of said truncated cylindrical member.
Claim 8
Dependent Claim
21 words
A joint endoprosthesis according to claim 6 wherein said plurality of truncated cylindrical members include at least three truncated cylindrical members.
Claim 9
Dependent Claim
25 words
A joint endoprosthesis according to claim 5 further comprising a retaining means for retaining each of said swivel members within said respective swivel member receptor.
Claim 10
Dependent Claim
197 words
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.
Claim 11
Dependent Claim
197 words
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.
Claim 12
Dependent Claim
25 words
A joint endoprosthesis according to claim 9 further comprising means for retaining each of said swivel members in engagement with its respective swivel member receptor.
Claim 13
Dependent Claim
21 words
A joint endoprosthesis according to claim 9 wherein said first mounting face is angled with respect to said second mounting face.
Claim 14
Dependent Claim
17 words
A joint endoprosthesis according to claim 9 wherein each of said swivel members include a rotatable bearing.
Claim 15
Dependent Claim
94 words
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.
Claim 16
Dependent Claim
94 words
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.
Claim 17
Dependent Claim
21 words
A joint endoprosthesis according to claim 13 wherein said plurality of truncated cylindrical members comprise at least three truncated cylindrical members.
Claim 18
Dependent Claim
46 words
A joint endoprosthesis according to claim 13 wherein each of said truncated cylindrical members comprise a pair of mounting faces, wherein one of said mounting faces of each of said truncated cylindrical members rotatably engages one of the mounting faces of each adjacent truncated cylindrical members.
Claim 19
Dependent Claim
22 words
A joint endoprosthesis according to claim 15 wherein the engaged mounting faces of the adjacent truncated cylindrical members have different angular orientations.
Claim 20
Dependent Claim
21 words
A joint endoprosthesis according to claim 16 wherein said plurality of truncated cylindrical members comprise at least three truncated cylindrical members.
Claim 21
Dependent Claim
28 words
A joint endoprosthesis according to claim 13 further comprising a rotatable bearing rotatably connecting each of said truncated cylindrical members to said at least one adjacent cylindrical member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |