The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1976
Filed:
Jun. 25, 1973
Sheila J Fraser, Seattle, WA (US);
Roger B Gillette, Auburn, WA (US);
Richard L Olson, Bellevue, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
A continuous flow of gas plasma is supplied to a space at a very low pressure in which the object to be sterilized is located. Cool plasma of a suitable gas such as argon is produced continually by being subjected to a radio-frequency field. Complex shapes such as capillary passages through a blood oxygenator can be sterilized by passing the gas plasma through them. The exterior of objects to be sterilized can be subjected to gas plasma in a space at a very low pressure either confined or unconfined. The space may, for example, be a packaging envelope, and subsequent to sterilization such envelope can be evacuated and collapsed onto the object to preserve its sterile character.