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특허 상세정보

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Intravaginal ring

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) A61M-007/00   
미국특허분류(USC) 128/260 ; 128/127 ; 424/22 ; 427/2
출원번호 US-0974490 (1978-12-29)
발명자 / 주소
  • Nash Harold A. (Harrington Park NJ) Mishell
  • Jr. Daniel R. (Palos Verdes Estates CA)
출원인 / 주소
  • The Population Council, Inc. (New York NY 02)
인용정보 피인용 횟수 : 107  인용 특허 : 4
초록

This invention relates to an improved intravaginal ring for use as a contraceptive comprising an inert elastomer core, a medicated layer encircling the core and an outer inert elastomer layer and method of manufacturing the intravaginal ring.

대표
청구항

A shell design intravaginal ring comprising in combination a core made of an inert elastomer, a medicated layer encircling the core, and an outer inert elastomer layer having a thickness of about 0.1 to 0.6 mm, the medicated layer comprising an inert elastomer and a combination of estradiol with a progestogen selected from the group consisting of levonorgestrel, d,l-norgestrel and norethindrone and the medicated layer having a thickness of not more than twice the thickness of the outer layer.

인용문헌 (4)

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  4. Schopflin Gisela (Berlin DT) Laudahn Gerhard (Berlin DT) Muhe Barbara (Berlin DT) Hartmann Heidemarie (Berlin DT) Windt Fred (Berlin DT), Vaginal ring.

이 특허를 인용한 특허 (107)

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