[특허]Needleless dual direction check valve

Needleless dual direction check valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16L-037/28
출원번호	US-0223058 (1994-04-06)
발명자 / 주소	Smedley William H. (Lake Elsinore CA) Haber Terry M. (El Toro CA) Foster Clark B. (Laguna Niguel CA)
출원인 / 주소	Habley Medical Technology Corporation (Laguna Hills CA 02)
인용정보	피인용 횟수 : 145 인용 특허 : 0

초록 ▼

A dual direction check valve which facilitates the connection of an IV fluid line to the proximal end of a hypodermic needle that is used to make a veni puncture so that a patient may be infused with fluid from an IV medication bag, or the like. What is more, the check valve is adapted to reliably block the backflow of blood through the needle during the interconnection and start-up of the IV system. A resilient valve core formed from an elastomeric material has a peripheral sealing surface extending therearound. The check valve is closed to fluid flow in both directions when the sealing surface of the valve core mates against a complementary peripheral sealing surface which surrounds the valve core. The check valve is opened to fluid flow in both directions when an axial pushing force (e.g. generated by a Luer lock fitting) is applied to the valve core, whereby the valve core is compressed and the sealing surface thereof is separated from its complementary sealing surface to establish a gap therebetween.

대표청구항 ▼

A check valve having a fluid receiving end, a fluid expulsing end, a fluid path extending between said fluid receiving and expulsing ends, and comprising: a first sealing surface located in said fluid path; a valve core to control the flow of fluid through the fluid path of said check valve, said valve core being formed from a spring-like elastomeric material and having a second sealing surface, said valve core being compressed in response to an axial pushing force applied thereto for causing said valve core to move in said fluid path from a closed valve position where said first and second sealing surfaces engage one another to block said fluid path and prevent the flow of fluid through said check valve to an open valve position where said second sealing surface is spaced from said first sealing surface to establish a gap therebetween and thereby open said fluid path to the flow of fluid through said check valve, and a rigid pressure cap affixed to said elastomeric valve core for receiving the axial pushing force and transferring said pushing force to said valve core for compressing said valve core and thereby causing said valve core to move in said fluid path.

이 특허를 인용한 특허 (145)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Needleless dual direction check valve 원문보기

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Needleless dual direction check valve 원문보기

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이 특허를 인용한 특허 (145)

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