US4663122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for flash sterilization
Assignee: Individual
•
Filing: 1984-06-15
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Granted: 1987-05-05
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Expires: 2004-06-15
Abstract
Abstract The invention is for an instrument container and the method of its use. Instruments for sterilization are placed on a tray spaced above a floor of the container, and the container has a gated exhaust port in a wall and adjacent the floor. In use, the open top container with open exhaust port is placed in a pressure vessel and having an outlet, steam is caused to gravitate down through the instruments to exit through its open exhaust port and thence through the vessel's outlet. When the steam vessel is opened, the gate is closed and latched over the container's exhaust port and a top cover is installed so that the sterilized instruments maybe transported through non-sterile environments without danger of contamination.
Inventors
- 👤 Beverly J. Sparks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:52
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/04; A61L2/06; A61L2/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
240 words
A method for the rapid and thorough flash sterilization of instruments in a gravity displacement steam pressure sterilizing vessel in which steam at a temperature of at least 270° F. is admitted into said vessel through an inlet at a point high in a wall of said vessel and gravitates through said vessel to an outlet at a point low and adjacent a wall of said vessel opposite said inlet wall, said method comprising the steps of: placing instruments to be sterilized on a perforated shelf positioned in an open topped, high solid walled, box container having a solid flat floor, said shelf being spaced above the solid floor of said container, said container having an open exhaust port of substantially 11/2 inches in diameter in a wall and adjacent said floor, and a manually operable latchable gate on the outer surface of said wall for opening and closing said exhaust port; positioning said container in the gravity displacement steam sterilizing vessel with the open top of said container below the level of the steam admitting point of said sterilizing vessel; sealing said sterilizing vessel; admitting steam through said steam admitting inlet of said vessel, the steam thus admitted gravitating through the open top of said box container, said instruments in said container, said container exhaust port, and through said vessel outlet; and continuing the flow of steam through said sterilizing vessel for a period of at least three minutes.
Claim 2
Independent Claim
240 words
A method for the rapid and thorough flash sterilization of instruments in a gravity displacement steam pressure sterilizing vessel in which steam at a temperature of at least 270° F. is admitted into said vessel through an inlet at a point high in a wall of said vessel and gravitates through said vessel to an outlet at a point low and adjacent a wall of said vessel opposite said inlet wall, said method comprising the steps of: placing instruments to be sterilized on a perforated shelf positioned in an open topped, high solid walled, box container having a solid flat floor, said shelf being spaced above the solid floor of said container, said container having an open exhaust port of substantially 11/2 inches in diameter in a wall and adjacent said floor, and a manually operable latchable gate on the outer surface of said wall for opening and closing said exhaust port; positioning said container in the gravity displacement steam sterilizing vessel with the open top of said container below the level of the steam admitting point of said sterilizing vessel; sealing said sterilizing vessel; admitting steam through said steam admitting inlet of said vessel, the steam thus admitted gravitating through the open top of said box container, said instruments in said container, said container exhaust port, and through said vessel outlet; and continuing the flow of steam through said sterilizing vessel for a period of at least three minutes.
Claim 3
Dependent Claim
38 words
The method of claim 1 wherein said step of positioning said container in said sterilizing vessel further includes the step of positioning said container with the open exhaust port thereof directed toward the outlet of said sterilizing vessel.
Claim 4
Dependent Claim
57 words
The method claimed in claim 1 further including the steps of: discontinuing the flow of steam through said admitting inlet; opening said sterilizing vessel; applying a cover to the open top of said instrument container; closing and latching said gate over the exhaust port of said instrument container; and removing said instrument container from said sterilizating vessel.
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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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |