US5557650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fabricating an anti-scatter X-ray grid device for medical diagnostic radiography
Assignee: General Electric Co
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Filing: 1995-03-10
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Granted: 1996-09-17
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Expires: 2015-03-10
Abstract
Abstract A method for fabricating an anti-scatter x-ray grid for medical diagnostic radiography includes providing a substrate having channels therein and material that is substantially non-absorbent of x-radiation; and filling the channels with absorbing material that is substantially absorbent of x-radiation. In one embodiment, the step of providing a substrate having channels therein comprises sawing a plastic substrate with a thin circular blade and the step of filling the channels with absorbing material comprises melting the absorbing material and flowing the melted absorbing material into the channels.
Inventors
- 👤 Renato Guida
- 👤 Kenneth P. Zarnoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:36
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/025
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
68 words
A method for fabricating an anti-scatter x-ray grid for medical diagnostic radiography, the method comprising: providing a substrate having channels therein, the substrate comprising a plastic material that is substantially non-absorbent of x-radiation; and melting absorbing material that is substantially absorbent of x-radiation and flowing the melted absorbing material into the channels, the substrate comprising material capable of remaining stable at the melting temperature of the absorbing material.
Claim 2
Independent Claim
68 words
A method for fabricating an anti-scatter x-ray grid for medical diagnostic radiography, the method comprising: providing a substrate having channels therein, the substrate comprising a plastic material that is substantially non-absorbent of x-radiation; and melting absorbing material that is substantially absorbent of x-radiation and flowing the melted absorbing material into the channels, the substrate comprising material capable of remaining stable at the melting temperature of the absorbing material.
Claim 3
Dependent Claim
31 words
The method of claim 1, wherein the step of providing a substrate having channels therein is a technique selected from the group consisting of molding, drilling, and cutting of a substrate.
Claim 4
Dependent Claim
24 words
The method of claim 1, wherein the step of providing a substrate having channels therein comprises sawing a substrate with a thin circular blade.
Claim 5
Dependent Claim
18 words
The method of claim 3, wherein the step of sawing comprises sawing a single surface of the substrate.
Claim 6
Dependent Claim
17 words
The method of claim 3, wherein the step of sawing comprises sawing two surfaces of the substrate.
Claim 7
Dependent Claim
24 words
The method of claim 1, further including, after flowing the melted absorbing material into the channels, polishing at least one surface of the substrate.
Claim 8
Dependent Claim
30 words
The method of claim 1, further including the step of, prior to flowing the melted absorbing material into the channels, coating the surfaces of the channels with adhesion promoting material.
Claim 9
Dependent Claim
13 words
The method of claim 1, wherein the absorbing material comprises a metal alloy.
Claim 10
Dependent Claim
13 words
The method of claim 1, wherein the absorbing material comprises a lead-bismuth alloy.
Claim 11
Dependent Claim
22 words
The method of claim 1, wherein the step of providing a substrate having channels therein comprises providing at least some angled channels.
Claim 12
Dependent Claim
24 words
The method of claim 10, wherein the step of providing at least some angled channels includes situating the substrate on a rotatable support surface.
Claim 13
Dependent Claim
42 words
The method of claim 1, further including, after flowing the melted absorbing material into the channels, the step of applying a protective layer over at least one surface of the substrate, the protective layer comprising material that is substantially non-absorbent of x-radiation.
Claim 14
Dependent Claim
32 words
The method of claim 8, wherein the metal alloy comprises material selected from the group consisting of lead, bismuth, gold, barium, tungsten, platinum, mercury, thallium, indium, palladium, silicon, antimony, tin, and zinc.
Claim 15
Independent Claim
76 words
A method for fabricating an anti-scatter x-ray grid for medical diagnostic radiography, the method comprising: sawing channels in a substrate with a thin circular blade, the substrate comprising a plastic material that is substantially non-absorbent of x-radiation; and melting absorbing material comprising a metal alloy that is substantially absorbent of x-radiation and flowing the melted absorbing material into the channels, the substrate comprising material capable of remaining stable at the melting temperature of the absorbing material.
Claim 16
Independent Claim
76 words
A method for fabricating an anti-scatter x-ray grid for medical diagnostic radiography, the method comprising: sawing channels in a substrate with a thin circular blade, the substrate comprising a plastic material that is substantially non-absorbent of x-radiation; and melting absorbing material comprising a metal alloy that is substantially absorbent of x-radiation and flowing the melted absorbing material into the channels, the substrate comprising material capable of remaining stable at the melting temperature of the absorbing material.
Claim 17
Dependent Claim
13 words
The method of claim 14, wherein the absorbing material comprises a lead-bismuth alloy.
Claim 18
Dependent Claim
19 words
The method of claim 14, wherein the step of sawing channels therein comprises sawing at least some angled channels.
Claim 19
Dependent Claim
24 words
The method of claim 16, wherein the step of sawing at least some angled channels includes situating the substrate on a rotatable support surface.
References Cited (Backward Citations)
US2605427A
Cited
US5418833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-09-17 | 2000-03-18 | 2000-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-17 | 2004-03-18 | 2004-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-17 | 2008-03-18 | 2008-09-17 | $7700.00 | Window Closed / Lapsed |