Patent · US Expired

pH reducing formulation and delivery system for a tampon

US6710220B2 · kind B2 · utility

6Cited by

11References

23Claims

0Family size

Assignee

Hi-Gienic Ltd. · IL

Inventors

Ram Kluger · Even Yehuda, IL
Simon Benita · Jerusalem, IL
Theodor Stern · Jerusalem, IL

Key dates

Filing date	May 15, 2001
Grant date	Mar 23, 2004
Priority date	—
Expiry date	Jul 9, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S604/904
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A formulation effective in reducing the pH in a menstruating vagina or in a tampon inserted therein to below pH 5.5, comprising (a) 3-80% by weight of a solid organic acid polymer; (b) 92-15% by weight of a solid organic acid, and (c) 5-30% of a wetting agent. Also disclosed is a delivery system for releasing an active agent comprising: (a) a deposition comprising the active agent; and (b) a polymeric support on which the deposition is deposited. The delivery system is especially useful in a catamenial tampon for insertion in a human vagina which comprises (a) an inner core comprising an absorbent material; (b) an outer layer comprising a liquid permeable material; and (c) the delivery system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.