Patent US3883749A successfully refreshed from Google Patents.
US3883749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio opaque gloves
Assignee: INTERNATIONAL BIOMEDICAL Corp
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Filing: 1972-08-15
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Granted: 1975-05-13
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Expires: 1992-08-15
Abstract
Abstract Radiation shielding garments and accessories, such as radioopaque gloves for surgeons, shielding against the harmful x-ray radiation in a fluoroscopic zone are advantageously different from garments for shielding from other medical uses of x-rays. Such garments are provided with zones of differing opacity, whereby desired sensitivity and ''''feel'''' through the glove material is retained. One feature is the provision of an ''''opacity gradient'''' across the glove cross section with opacity being relatively low at the fingertip area (lesser shieldthickness), but relatively high at the less nonprehensile hand zones, such as the palm. Glove fabrication techniques for achieving such an opacity gradient are described.
Inventors
- 👤 Arthur V Whittaker
- 👤 Jr Ralph E Whittaker
- 👤 Robert A Goldstrom
- 👤 Frederick J Shipko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:14
CPC Classifications
A; A41; A41D; A41D19/00; A41D19/015; G; G21; G21F; G21F3/00; G21F3/02; G21F3/035
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A GLOVE PROTECTING THE WEARER FROM A SIGNIFACTANT PORTION OF THE RADIATION HAZARDS OF FLUOROSCOPIC SYSTEMS CONSISTING OF THIN POLYMERIC FILMS HAVING INNER AND OUTER UNLOADED LAYERS AND AN INTERNAL LAYER CONTAINING A SCREENING AGENT OF THE CLASS CONSISTING OF DEPLETED URANIUM DIOXIDE, LEAD OXIDE, AND MIXTURES THEREOF, SAID FILM CONTAINING FROM 10 PER CENT TO 45 PER CENT BY WEIGHT OF SAID SCREENING AGENT, AND SAID FILM HAVING AN AVERAGE THICKNESS WITHIN THE RANGE FROM 5 MILS TO 25 MILS, VARIOUS PORTIONS OF THE FILM BEING AT LEAST 25 PER CENT THICKER
Claim 2
Dependent Claim
93 words
A GLOVE PROTECTING THE WEARER FROM A SIGNIFACTANT PORTION OF THE RADIATION HAZARDS OF FLUOROSCOPIC SYSTEMS CONSISTING OF THIN POLYMERIC FILMS HAVING INNER AND OUTER UNLOADED LAYERS AND AN INTERNAL LAYER CONTAINING A SCREENING AGENT OF THE CLASS CONSISTING OF DEPLETED URANIUM DIOXIDE, LEAD OXIDE, AND MIXTURES THEREOF, SAID FILM CONTAINING FROM 10 PER CENT TO 45 PER CENT BY WEIGHT OF SAID SCREENING AGENT, AND SAID FILM HAVING AN AVERAGE THICKNESS WITHIN THE RANGE FROM 5 MILS TO 25 MILS, VARIOUS PORTIONS OF THE FILM BEING AT LEAST 25 PER CENT THICKER
Claim 3
Independent Claim
191 words
A method of preparing a fluoroscopic protective glove which includes the step of dipping a form into a dispersion comprising polymer in a solvent, withdrawing the coated form, draining the form with upwardly directed finger portions to gravitationally impart greater thickness at the heel portion of the glove than at the fingertip portions, drying such coating, repeating dipping, draining and drying steps, the inner and outer layers being unloaded and the middle layers containing from 10 per cent to 45 per cent by weight lead oxide as a screening agent, heat curing the glove, and removing the glove from said form, the average thickness of the glove Being within the range from 5 mils to 25 mils, various portions of the film being at least 25 per cent thicker than other portions to provide greater protection from radiation at such thicker portions, the thinner portions being not more than 10 mils thick, whereby sensitivity through such thin portion is preserved, such thinner portions being at the fingertip portion of the glove whereby tactile sensitivity through the fingertip is enhanced to permit a surgeon to employ such gloves within fluoroscopic radiation zone.
Claim 4
Independent Claim
191 words
A method of preparing a fluoroscopic protective glove which includes the step of dipping a form into a dispersion comprising polymer in a solvent, withdrawing the coated form, draining the form with upwardly directed finger portions to gravitationally impart greater thickness at the heel portion of the glove than at the fingertip portions, drying such coating, repeating dipping, draining and drying steps, the inner and outer layers being unloaded and the middle layers containing from 10 per cent to 45 per cent by weight lead oxide as a screening agent, heat curing the glove, and removing the glove from said form, the average thickness of the glove Being within the range from 5 mils to 25 mils, various portions of the film being at least 25 per cent thicker than other portions to provide greater protection from radiation at such thicker portions, the thinner portions being not more than 10 mils thick, whereby sensitivity through such thin portion is preserved, such thinner portions being at the fingertip portion of the glove whereby tactile sensitivity through the fingertip is enhanced to permit a surgeon to employ such gloves within fluoroscopic radiation zone.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |