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Last Updated: September 24, 2020

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Patent: 5,204,004

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Summary for Patent: 5,204,004
Title: Method and apparatus for preventing bacteriological contamination by a dental tool water line
Abstract:A method and apparatus are disclosed for preventing bacterial contamination from being introduced into a dental patient\'s mouth from water flowing through a dental tool water line. A flexible water line typically used for supplying water to a dental syringe, high-speed hand piece, or ultrasonic scaler has been found to support and encourage the growth of a significant biofilm that serves as a source of bacteria. To prevent the bacteria from being introduced into a patient\'s mouth by water flowing through the line, and thus into the patient\'s system, an in-line water filter is installed within the water line supplying water to the dental tool, at a point adjacent thereto. Conventional Luer fittings on the in-line water filter facilitate its quick installation and replacement. In addition, a cap protects the sterility of the outlet port of the in-line water filter during the installation process. The in-line water filter includes a microporous membrane that blocks bacteria and other particulate matter larger than approximately 0.2 microns, so that water flowing from the outlet port of the in-line water filter is substantially sterile.
Inventor(s): Johnston; Simon E. (Kirkland, WA), Johnston; Anna M. (Kirkland, WA), Williams; Jeffrey F. (Mason, MI)
Assignee:
Application Number:07/891,440
Patent Claims:see list of patent claims

Details for Patent 5,204,004

Applicant Tradename Biologic Ingredient Dosage Form BLA Number Approval Date Patent No. Assignee Estimated Patent Expiration Status Orphan Source
Merck Sharp & Dohme Corp. ZOSTAVAX zoster vaccine live INJECTION, POWDER, LYOPHILIZED, FOR SUSPENSION 125123 001 2006-05-25   Start Trial 2039-09-23 search
Merck Sharp & Dohme Corp. ZOSTAVAX zoster vaccine live INJECTION, POWDER, LYOPHILIZED, FOR SUSPENSION 125123 1 2006-05-25   Start Trial 2039-09-23 search
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Number >Approval Date >Patent No. >Assignee >Estimated Patent Expiration >Status >Orphan >Source

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