US5676146A
Expired / Lapsed
US
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Surgical implant containing a resorbable radiopaque marker and method of locating such within a body
Assignee: Warsaw Orthopedic Inc
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Filing: 1996-09-13
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Granted: 1997-10-14
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Expires: 2016-09-13
Abstract
Abstract A surgical implant containing a resorbable radiopaque marker enables the position and/or orientation of the implant to be readily determined by x-ray or other radiographic technique following its surgical implantation in the body.
Inventors
- 👤 Nelson L. Scarborough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:17
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61B; A61B6/00; A61B6/58; A61B6/582; A61B6/583; A61B6/12; A61F2/28; A61B90/00; A61B90/39; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30059; A61F2002/3006; A61F2002/30062; A61F2002/3008; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30153; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30242; A61F2002/30261; A61F2002/30263; A61F2002/30291; A61F2210/00; A61F2210/0004; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0019; A61F2230/0063; A61F2230/0069; A61F2230/0071; A61F2230/0082; A61F2230/0084; A61F2230/0091; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293; A61F2310/00365
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
22 words
A surgical implant for surgical implantation in the body, the implant being fabricated from radiolucent material and possessing a resorbable radiopaque marker.
Claim 2
Dependent Claim
22 words
A surgical implant for surgical implantation in the body, the implant being fabricated from radiolucent material and possessing a resorbable radiopaque marker.
Claim 3
Dependent Claim
11 words
The implant of claim 1 wherein the radiolucent material is resorbable.
Claim 4
Dependent Claim
14 words
The implant of claim 2 wherein the resorbable material is demineralized bone or collagen.
Claim 5
Dependent Claim
16 words
The implant of claim 2 wherein the resorbable material is a flexible sheet of demineralized bone.
Claim 6
Dependent Claim
11 words
The implant of claim 1 which possesses a definite geometrical configuration.
Claim 7
Dependent Claim
17 words
The implant of claim 1 wherein the resorbable radiopaque marker comprises nondemineralized or partially demineralized bone particles.
Claim 8
Dependent Claim
24 words
The implant of claim 6 wherein the nondemineralized or partially demineralized bone particles are selected from the group consisting of human and animal bone.
Claim 9
Dependent Claim
32 words
The implant of claim 6 wherein the nondemineralized or partially demineralized bone particles are of a predetermined shape selected from the group consisting of spherical, quasi-spherical, cuboid, tube, fiber, spiral and rectangular.
Claim 10
Dependent Claim
22 words
The implant of claim 6 wherein the partially demineralized bone particles contain not less than about 20 weight percent residual inorganic matter.
Claim 11
Dependent Claim
27 words
The implant of claim 1 wherein the resorbable radiopaque marker is a calcium-based mineral selected from the group consisting of hydroxyapatite, tricalcium phosphate, fluorapatite and their mixtures.
Claim 12
Dependent Claim
21 words
The implant of claim 1 wherein the resorbable radiopaque marker is arranged within the implant in accordance with a predetermined pattern.
Claim 13
Dependent Claim
12 words
The implant of claim 11 wherein the predetermined pattern is a grid.
Claim 14
Independent Claim
49 words
A method of determining the location and/or orientation of a surgical implant within a body which comprises: a) surgically implanting within a body an implant fabricated from radiolucent material containing a resorbable radiopaque marker; and, b) post-surgically determining the location and/or orientation of the implant by a radiographic technique.
Claim 15
Independent Claim
49 words
A method of determining the location and/or orientation of a surgical implant within a body which comprises: a) surgically implanting within a body an implant fabricated from radiolucent material containing a resorbable radiopaque marker; and, b) post-surgically determining the location and/or orientation of the implant by a radiographic technique.
Claim 16
Dependent Claim
10 words
The method of claim 13 wherein radiolucent material is resorbable.
Claim 17
Dependent Claim
12 words
The method of claim 13 wherein the radiographic technique is x-ray imaging.
Claim 18
Dependent Claim
20 words
The method of claim 13 wherein the radiopaque marker is arranged within the implant in accordance with a predetermined pattern.
Claim 19
Dependent Claim
12 words
The method of claim 16 wherein the predetermined pattern is a grid.
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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) | 2000-10-13 | 2001-04-14 | 2001-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-13 | 2005-04-14 | 2005-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-13 | 2009-04-14 | 2009-10-14 | $7700.00 | Window Closed / Lapsed |