US4790307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable surgical mask having a self-contained supply of anti-bacterial material
Assignee: Habley Medical Technology Corp
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Filing: 1986-12-15
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Granted: 1988-12-13
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Expires: 2006-12-15
Abstract
Abstract A disposable surgical mask which reduces the transmission of iatrogenic or nosocomial, viral or bacterial infection by operating room personnel. The mask includes a containment envelope within which is sealed a rupturable membrane (e.g., an ampule) containing an anti-bacterial fluid. A series of breathing apertures are formed in the containment envelope through which the wearer may breathe. In operation, the wearer supplies sufficient force to break the rupturable membrane and thereby release the anti-bacterial fluid therefrom. The wearer then breathes normally through the apertures formed in the containment envelope, so that the potentially infectious bacterial population of the wearer's exhalations will be substantially reduced by the anti-bacterial fluid expulsed from the ruptured membrane.
Inventors
- 👤 Terry M. Haber
- 👤 Romeo Lemarie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1161; A41D13/1192
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
A surgical mask to reduce the possibility of iatrogenic and nosocomial disease transmitted by a wearer of the mask, said mask comprising: means for securing said mask to the face of a wearer; top and bottom layers of air permeable material; rupturable container means located between said top and bottom layers and having a plurality of fluid reservoirs in which respective supplies of anti-bacterial fluid are contained, said container means adapted to rupture upon the application of a predetermined minimum force to expulse said anti-bacterial fluid from said plurality of fluid reservoirs; an absorbent material located between said top and bottom layers to surround said container means for absorbing and dispensing said anti-bacterial fluid from said fluid reservoirs when said container means is ruptured and said fluid is expulsed; and fluid channel means extending from respective ones of said fluid reservoirs for evenly distributing said anti-bacterial fluid throughout said absorbent material when said container means is ruptured and said fluid is expulsed.
Claim 2
Dependent Claim
162 words
A surgical mask to reduce the possibility of iatrogenic and nosocomial disease transmitted by a wearer of the mask, said mask comprising: means for securing said mask to the face of a wearer; top and bottom layers of air permeable material; rupturable container means located between said top and bottom layers and having a plurality of fluid reservoirs in which respective supplies of anti-bacterial fluid are contained, said container means adapted to rupture upon the application of a predetermined minimum force to expulse said anti-bacterial fluid from said plurality of fluid reservoirs; an absorbent material located between said top and bottom layers to surround said container means for absorbing and dispensing said anti-bacterial fluid from said fluid reservoirs when said container means is ruptured and said fluid is expulsed; and fluid channel means extending from respective ones of said fluid reservoirs for evenly distributing said anti-bacterial fluid throughout said absorbent material when said container means is ruptured and said fluid is expulsed.
Claim 3
Dependent Claim
74 words
The surgical mask recited in claim 1, wherein said container means and said absorbent material are sealed within a containment envelope that is located between said top and bottom layers, said envelope being formed from a hydrophobic, air-impermeable material and having a plurality of breathing apertures through which the wearer may breathe for introducing the wearer's breath to the anti-bacterial which is absorbed by said absorbent material when said fluid container means is ruptured.
Claim 4
Dependent Claim
41 words
The surgical mask recited in claim 1, wherein said securing means comprises holes formed through opposite ends of one of said top or bottom layers to receive the ears of the wearer and thereby secure said mask across the wearer's face.
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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) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |