US4898715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for dry sterilization of medical devices and materials
Assignee: Ethicon Inc
•
Filing: 1988-11-22
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Granted: 1990-02-06
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Expires: 2008-11-22
Abstract
Abstract A process for dry sterilization of medical devices and materials in which these materials are subjected to an electrical discharge in a gaseous atmosphere to produce an active plasma for surface sterilization of the devices and materials.
Inventors
- 👤 Adir Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:43
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/14; Y; Y10; Y10S; Y10S5/00; Y10S5/933
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
Apparatus for sterilization of medical devices and materials in a gas plasma comprising, a gas confining chamber formed with a generally cylindrical metallic wall, a perforated metallic cylinder positioned within said chamber generally concentric with said generally cylindrical chamber wall, means for electrically connecting said chamber wall to a point of potential reference, means for applying an RF voltage between said perforated cylinder and said point of potential reference, means for evacuating said gas-confining chamber, and means for flowing gas through said chamber.
Claim 2
Dependent Claim
83 words
Apparatus for sterilization of medical devices and materials in a gas plasma comprising, a gas confining chamber formed with a generally cylindrical metallic wall, a perforated metallic cylinder positioned within said chamber generally concentric with said generally cylindrical chamber wall, means for electrically connecting said chamber wall to a point of potential reference, means for applying an RF voltage between said perforated cylinder and said point of potential reference, means for evacuating said gas-confining chamber, and means for flowing gas through said chamber.
Claim 3
Dependent Claim
117 words
Apparatus for sterilization of medical devices and materials in a gas plasma comprising, a gas confining chamber formed with generally cylindrical metallic wall, a first perforated metallic cylinder positioned within said chamber generally concentric with said generally cylindrical chamber wall, a second perforated metallic cylinder positioned intermediate between said first perforated metallic cylinder and said chamber wall, generally concentric with said generally cylindrical chamber wall, means for electrically connecting both said chamber wall and said first perforated metallic cylinder to a point of potential reference, and means for applying an RF voltage between said second perforated cylinder and said point of potential reference, means for evacuating said gas-confining chamber and means for flowing gas through said chamber.
Claim 4
Dependent Claim
117 words
Apparatus for sterilization of medical devices and materials in a gas plasma comprising, a gas confining chamber formed with generally cylindrical metallic wall, a first perforated metallic cylinder positioned within said chamber generally concentric with said generally cylindrical chamber wall, a second perforated metallic cylinder positioned intermediate between said first perforated metallic cylinder and said chamber wall, generally concentric with said generally cylindrical chamber wall, means for electrically connecting both said chamber wall and said first perforated metallic cylinder to a point of potential reference, and means for applying an RF voltage between said second perforated cylinder and said point of potential reference, means for evacuating said gas-confining chamber and means for flowing gas through said chamber.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |