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US3779707A Expired / Lapsed US ⏱️ 0.0 years remaining

Surgical sterilization method

Assignee: Individual
•
Filing: 1971-05-28
•
Granted: 1973-12-18
•
Expires: 1991-05-28
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Abstract

Abstract A method and apparatus for sterilizing articles such as surgical and dental instruments by immersing the articles in a container of boiling tetrachloroethylene. The container has a lower, heated portion, a cooled upper portion wherein vapor from the boiling liquid condenses, and an intermediate vapor column. Articles to be sterilized are cleaned and then submerged in the boiling liquid for up to about 16 minutes; then the articles are raised slowly through the vapor to thereby exit the container, sterile and dry. The container may be provided with a sliding lid, with thermostatically controlled high temperature cut-offs for the heating element disposed in the lower portion, and in the upper portion of the container.

Inventors

  • 👤 D Tabone

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 18:59
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/16; A61L2/18; A61C; A61C19/00; A61C19/002

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 56 words
The method of claim 1 wherein said boiling liquid occupies the bottom portion of a chamber and a portion of said chamber over said liquid is occupied by tetrachloroethylene vapor, said step of drying further comprising slowly raising said basket through said vapor to dry the instruments therein before said basket is removed from said chamber.
Claim 2
Dependent Claim 21 words
The method of claim 2 wherein said instruments are submerged in said boiling liquid for between twelve and about sixteen minutes.

References Cited (Backward Citations)

US1187498A Cited
US1850524A Cited
US1827479A Cited
US2096737A Cited
US2207186A Cited
US2231790A Cited
US2294087A Cited
AT167297B Cited
US2786245A Cited
US3459490A Cited
US3419346A Cited
US3579290A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-17 1977-06-18 1977-12-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-17 1981-06-18 1981-12-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-17 1985-06-18 1985-12-18 $7700.00 Window Closed / Lapsed

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