US5469847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiographic multi-modality skin markers
Assignee: IZI Medical Products LLC
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Filing: 1994-02-28
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Granted: 1995-11-28
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Expires: 2014-02-28
Abstract
Abstract The device of the present application is an adhesive surface marker comprising a gel sealed by a casing and membrane structure. The markers of the present invention can include a cavity for receiving imaging materials. The markers provide means for marking patients and diagnostic images taken of those patients through different methods including X-Ray, Computerized Tomography, Positron Emission Tomograph, and Nuclear Magnetic Resonance Imaging among others, retain their shape and size, and do not suffer from water-loss which can lead to reduced density to certain radio-graphic modalities (e.g. MRI).
Inventors
- 👤 Simion J. Zinreich
- 👤 Eva S. Zinreich
- 👤 Rex O. Bare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:26
CPC Classifications
H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; A; A61; A61B; A61B90/00; A61B90/39; G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; G01R33/48; G01R33/58; A61B17/00; A61B17/34; A61B17/3403; A61B2017/3405; A61B2090/3995; G01R33/28; G01R33/281
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A radiographic surface marker comprising a casing comprising inner side walls, outer side walls, and top walls, said inner, outer, and top walls defining a first chamber and a second chamber, said first chamber holding dense material visible to multiple radiographic imaging methods, a first membrane attached to said casing forming a bottom wall and sealing the dense material into said first chamber, a second membrane attached to said casing sealing said second chamber and enabling later injection of material into said second chamber without said later injected material contacting said dense material, and a disk attached to at least one of said first membrane and said second membrane for providing a needle stopping surface.
Claim 2
Dependent Claim
115 words
A radiographic surface marker comprising a casing comprising inner side walls, outer side walls, and top walls, said inner, outer, and top walls defining a first chamber and a second chamber, said first chamber holding dense material visible to multiple radiographic imaging methods, a first membrane attached to said casing forming a bottom wall and sealing the dense material into said first chamber, a second membrane attached to said casing sealing said second chamber and enabling later injection of material into said second chamber without said later injected material contacting said dense material, and a disk attached to at least one of said first membrane and said second membrane for providing a needle stopping surface.
Claim 3
Dependent Claim
19 words
The radiographic surface marker of claim 1 further comprising an adhesive layer for adhering the marker to a patient.
Claim 4
Dependent Claim
102 words
A radiographic surface marker comprising a casing comprising inner side walls, outer side walls, and top walls, said inner, outer, and top walls defining a first chamber and a second chamber, said first chamber holding dense material visible to multiple radiographic imaging methods, a first membrane attached to said casing forming a bottom wall and sealing the dense material into said first chamber, a second membrane attached to said casing sealing said second chamber and enabling later injection of material into said second chamber without said later injected material contacting said dense material, and a porous material contained in said second chamber.
Claim 5
Dependent Claim
102 words
A radiographic surface marker comprising a casing comprising inner side walls, outer side walls, and top walls, said inner, outer, and top walls defining a first chamber and a second chamber, said first chamber holding dense material visible to multiple radiographic imaging methods, a first membrane attached to said casing forming a bottom wall and sealing the dense material into said first chamber, a second membrane attached to said casing sealing said second chamber and enabling later injection of material into said second chamber without said later injected material contacting said dense material, and a porous material contained in said second chamber.
Claim 6
Dependent Claim
25 words
The radiographic surface marker of claim 3 wherein a material opaque to Positron Emission Tomography is injected into the porous material in the second chamber.
Claim 7
Dependent Claim
30 words
The radiographic surface marker of claim 3 further comprising a disk attached to at least one of said first membrane and said second membrane for providing a needle stopping surface.
Claim 8
Dependent Claim
19 words
The radiographic surface marker of claim 3 further comprising an adhesive layer for adhering the marker to a patient.
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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) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |