Patent US3649835A successfully refreshed from Google Patents.
US3649835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable radiation shield
Assignee: Individual
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Filing: 1970-05-14
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Granted: 1972-03-14
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Expires: 1990-05-14
Abstract
Abstract This adjustable radiation shield fits on the collimator used on X-ray equipment for indicating and adjusting the exact area to be exposed to radiation. A shutter of the collimator is adjustable to indicate by means of a light field the area to be exposed. A plurality of radiopaque metal plates are mounted on a support on the collimator is such relation to the collimator as to be normally out of the way of the light field, but be adjustable to obstruct a selected portion of the light field, enabling the technologist to visualize by the shadow cast by the shield the exact area to be protected from radiation without the knowledge of or inconvenience to the patient.
Inventors
- 👤 Dennis D Brackenbrough
- 👤 Harold E Godfrey
- 👤 Richard G Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:19
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/04; A; A61; A61B; A61B6/00; A61B6/10; A61B6/107
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A protective shield device for shielding a selected area of the body from X-ray radiation from an X-ray device, comprising, a shield element opaque to said radiation, and means to adjustably support said shield element on said Xray device in the path of the X-ray beam from said X-ray device to said body, thereby to cast a shadow on a selected part of said body, said support means including means on said X-ray device to determine the configuration of the X-ray beam from said X-ray device, and selectively controlled light beam producing means in said configuration determining means to visually indicate the adjusted configuration on said body, said shield element being between said light beam producing means and said body whereby the shadow of said element on said body visually indicates the selected area to be protected.
Claim 2
Dependent Claim
137 words
A protective shield device for shielding a selected area of the body from X-ray radiation from an X-ray device, comprising, a shield element opaque to said radiation, and means to adjustably support said shield element on said Xray device in the path of the X-ray beam from said X-ray device to said body, thereby to cast a shadow on a selected part of said body, said support means including means on said X-ray device to determine the configuration of the X-ray beam from said X-ray device, and selectively controlled light beam producing means in said configuration determining means to visually indicate the adjusted configuration on said body, said shield element being between said light beam producing means and said body whereby the shadow of said element on said body visually indicates the selected area to be protected.
Claim 3
Dependent Claim
52 words
The protective shield device specified in claim 1, and said support means including a guide member mounted on said light producing means, means to adjustably hold said shield on said guide member, whereby said shield is selectively movable into and out of the path of said light beam and said X-ray beam.
Claim 4
Dependent Claim
44 words
The protective shield device specified in claim 1, and said light producing means being a collimator having a window for said light beam and for said X-ray beam, and said shield element coacting with said window for forming an adjusted shadow on said body.
Claim 5
Dependent Claim
38 words
The protective shield device specified in claim 3, and said support means including a guide member mounted on said collimator, and means to hold said shield element on said guide member in adjusted position relatively to said window.
Claim 6
Dependent Claim
48 words
The protective shield device specified in claim 4, and said shield element including radiopaque parts, and means to connect said parts relatively movably for selected configurations of said shield element, and said shield element holding means including relatively slideable connection between said guide member and said shield element.
Claim 7
Dependent Claim
59 words
The protective shield device specified in claim 4, and said guide member having a system of slots, said shield element including a plurality of radiopaque plates, a pivot holding said plates together adjustably to selected shield configurations, and means to slideably hold said pivot in said system of slots for adjustment of said shield relatively to said collimator window.
Claim 8
Dependent Claim
19 words
The protective shield device specified in claim 6, and said guide member being a transparent plate under said window.
Claim 9
Dependent Claim
29 words
The protective shield device specified in claim 6, and said guide member being a rigid element, and means to support said rigid element adjustably relatively to said collimator window.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |