US4985019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray marker
Assignee: Warsaw Orthopedic Inc
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Filing: 1988-03-11
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Granted: 1991-01-15
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Expires: 2008-03-11
Abstract
Abstract An adhesively applied marker for use in determining the location of where a spinal marker needle is to be placed is disclosed. The markers have a radiopaque grid pattern and other indicia on the surface of the marker so that when adhesively applied to the patient, they will clearly show the location of the markers in relationship to the body of the patient. A central opening for a marker needle is also provided. The discs are made in various sizes, for different applications.
Inventors
- 👤 Gary K. Michelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:39
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/12; A61B90/00; A61B90/39; A61F; A61F13/00; A61F13/00051; A61F13/02; A61F13/0259; A61F13/15; A61F13/44; A61F2013/00361; A61F2013/00365; A61F2013/00412; A61F2013/00846; A61F2013/00851; Y; Y10; Y10S; Y10S128/00; Y10S128/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
A radiographic marker comprising: first substantially rigid disc member having at least a portion thereof radio opaque, said radiographic opaque portion of said disc in the form of a grid, said member having a top surface and a bottom surface and a circular opening in said disc, the central axis of said opening substantially perpendicular to the plane of said disc and adapted to permit the tip of a needle to pass therethrough and be supported by the walls of said opening and adhesive applied to said bottom surface for applying said marker to the body of a patient.
Claim 2
Dependent Claim
99 words
A radiographic marker comprising: first substantially rigid disc member having at least a portion thereof radio opaque, said radiographic opaque portion of said disc in the form of a grid, said member having a top surface and a bottom surface and a circular opening in said disc, the central axis of said opening substantially perpendicular to the plane of said disc and adapted to permit the tip of a needle to pass therethrough and be supported by the walls of said opening and adhesive applied to said bottom surface for applying said marker to the body of a patient.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 in which said circular opening has a raised ridge portion surrounding at least a portion of said opening.
Claim 4
Dependent Claim
16 words
The marker of claim 1 in which said marker has a removable backing covering said adhesive.
Claim 5
Dependent Claim
17 words
The marker of claim 3 in which said removable backing has a first and a second portion.
Claim 6
Dependent Claim
15 words
The apparatus of claim 3 in which said removable backing includes more than one segment.
Claim 7
Dependent Claim
16 words
The X-ray member of claim 1 in which portions of said disc are not radio opaque.
Claim 8
Dependent Claim
29 words
The X-ray marker of claim 1 in which said opening in said disc has a raised ridge surrounding at least a portion of said opening on the top surface.
Claim 9
Dependent Claim
113 words
A radiographic marker comprising: first substantially rigid disc member having at least a portion thereof radio opaque, said member having a top surface and a bottom surface and a circular opening in said disc, the central axis of said opening substantially perpendicular to the plane of said disc and adapted to permit the tip of a needle to pass therethrough and be supported by the walls of said opening and adhesive applied to said bottom surface for applying said marker to the body of a patient, said marker having a first radiographical opaque marking thereon and a second radiographic opaque portion having a non symmetrical orientation for displaying the orientation of said marker.
Claim 10
Dependent Claim
113 words
A radiographic marker comprising: first substantially rigid disc member having at least a portion thereof radio opaque, said member having a top surface and a bottom surface and a circular opening in said disc, the central axis of said opening substantially perpendicular to the plane of said disc and adapted to permit the tip of a needle to pass therethrough and be supported by the walls of said opening and adhesive applied to said bottom surface for applying said marker to the body of a patient, said marker having a first radiographical opaque marking thereon and a second radiographic opaque portion having a non symmetrical orientation for displaying the orientation of said marker.
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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) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |