[특허]Venous pressure indicator

Venous pressure indicator 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-005/14 A61B-005/02
출원번호	US-0558357 (1975-03-14)
발명자 / 주소	Miller William (25 Manitou Road Westport CT 06880)
인용정보	피인용 횟수 : 60 인용 특허 : 0

초록 ▼

An intravenous infusion system combined with a venous pressure measuring instrument whereby the system is selectively capable of supplying fluid into the vein of a patient or of measuring his venous pressure without, however, exposing fluid in the system to the atmosphere and possible contamination. The instrument includes a transparent chamber interposed between an upstream line extending to the infusion fluid supply and a downstream line leading to the patient. A collapsible bulb disposed within the chamber is vented to the atmosphere, the bulb collapsing only when its internal pressure is less than external fluid pressure. In the infusion mode, supply fluid passing through the chamber is fed to the patient, the resultant fluid pressure in the chamber causing the normally-erect bulb to collapse. In the venous pressure mode, the upstream line is clampd to interrupt flow, the fluid pressure then exerted on the bulb being a function both of venous pressure and the height of the chamber relative to the heart, the higher the chamber the lower the pressure. By elevating or lowering the chamber to a point at which fluid pressure therein is equal to atmospheric pressure, a balance or reference pressure level is established, this level being indicated by the sudden erection or collapse of the bulb, depending on whether the bulb is moving upward or downward. Venous pressure is then determined by measuring the height of the chamber at this level along a scale formed on the downstream line.

대표청구항 ▼

A medical instrument usable in conjunction with an intravascular infusion system having a fluid source and selectively adapted to effect normal intravascular infusion or to measure intravascular fluid pressure, said instrument comprising: A. a transparent chamber having an inlet and an outlet and having a collapsible bulb mounted therein, the interior of the bulb being vented to the atmosphere and the exterior thereof being subject to the fluid pressure existing within the chamber, whereby said bulb assumes an erect state when said fluid pressure is no greater than atmospheric and assumes a collapsed state when said fluid pressure is greater than atmospheric; B. a flexible upstream line connecting the inlet of said chamber to said fluid source and a flexible downstream line connecting the outlet of said chamber to said patient whereby, in the infusion mode, fluid from said source flows through said upstream line into said chamber and from said chamber through said downstream line into said patient; C. means, in the pressure measuring mode, to clamp said upstream line to block flow of infusion fluid, said chamber then being elevated to a balance level above or below said patient at which the fluid pressure in said chamber equals atmospheric pressure, as indicated by the sudden erection or collapse of said bulb; and D. means to measure the height of said balance level to determine the intravascular pressure. A medical instrument to measure the pressure in a body cavity, said instrument comprising a transparent chamber having a collapsible bulb mounted therein, the interior of the bulb being vented to the atmosphere through an opening in the chamber, whereby the interior of the bulb is at atmospheric pressure and the exterior thereof is subject to the existing fluid pressure within the chamber, a flexible tube for connecting said chamber to said body cavity, and means to determine the height of the fluid level in said tube above the point in the body cavity whose pressure is being measured when the pressure within said bulb is substantially equal to the pressure within said chamber to provide a pressure indication.

이 특허를 인용한 특허 (60)

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Warren, Dee E.; Lopez, Dan, Devices and methods for transferring medicinal fluid to or from a container.
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Todd Robert J. (Salt Lake City UT) Wonder Terry M. (Salt Lake City UT), Fluid metering device.
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Massengale, Roger Dillard, Infusion apparatus with flow indicator.
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Todd Robert J. (Salt Lake City UT) Smith Gregg H. (Salt Lake City UT) Reynolds Gordon S. (Bountiful UT), Manometer for infusion apparatus.
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Charles J. McPhee, Manometer infusion apparatus.
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Warren, Dee E.; Lopez, Dan, Medical fluid transfer devices and methods with enclosures of sterilized gas.
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Munis, James Robert; Lozada, Leonardo Jose; Zura, Andrew Michael, Method and apparatus for controlling blood volume and hydration and for indicating resuscitation status of a patient using peripheral venous pressure as a hemodynamic parameter.
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Skovlund, Erik, Method and apparatus for the measurement of intra-abdominal pressure.
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Holte, Bo, Method and system of measuring IAP using a naso-enteric tube.
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Holte, Bo, Method and system of measuring IAP using a naso-enteric tube.
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Miller William (Westport CT), Physiological pressure measuring system.
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Marshall Lee (2808 Oregon Ct. ; J-3 Torrance CA 90503), Pressure detection arrangement.
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Schnell, Ralf; Hahn, Andreas, Pressure equalizing device.
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Fangrow, Thomas F.; Warren, Dee E.; Lopez, Dan, Pressure-regulating apparatus for withdrawing medicinal fluid from a vial.
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Fangrow, Thomas F., Pressure-regulating devices for transferring medicinal fluid.
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Fangrow, Thomas F., Pressure-regulating vial adaptors.
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Fangrow, Thomas F., Pressure-regulating vial adaptors.
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Fangrow, Thomas F., Pressure-regulating vial adaptors.
상세보기
Fangrow, Thomas F., Pressure-regulating vial adaptors.
상세보기
Fangrow, Thomas F., Pressure-regulating vial adaptors.
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Fangrow, Thomas F., Pressure-regulating vial adaptors.
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Fangrow, Thomas F., Pressure-regulating vial adaptors.
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Fangrow, Thomas F., Pressure-regulating vial adaptors and methods.
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Seifert, John M.; Fangrow, Thomas F., Pressure-regulating vial adaptors and methods.
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Seifert, John M.; Fangrow, Thomas F., Pressure-regulating vial adaptors and methods.
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Seifert, John M.; Fangrow, Thomas F., Pressure-regulating vial adaptors and methods.
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Warren, Dee E.; Lopez, Dan, Pressure-regulating vial adaptors and methods.
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Fangrow, Thomas F., Pressure-regulating vials and containers.
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Emerit Andre A. C. (30 Rue du Docteur Roux 95110 Sannois FRX), Source of vacuum and device for maintaining a negative pressure in an enclosure.
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Fangrow, Thomas F., Vial adaptor for regulating pressure.
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Fangrow, Thomas F., Vial adaptor for regulating pressure.
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Fangrow, Thomas F., Vial adaptor for regulating pressure.
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Fangrow, Thomas F., Vial adaptor for regulating pressure.
상세보기
Fangrow, Thomas F., Vial adaptor for regulating pressure.
상세보기
Fangrow, Thomas F., Vial adaptor for regulating pressure.
상세보기
Fangrow,Thomas F., Vial adaptor for regulating pressure.
상세보기
Fangrow,Thomas F., Vial adaptor for regulating pressure.
상세보기
Fangrow,Thomas F., Vial adaptor for regulating pressure.
상세보기
Fangrow,Thomas F., Vial adaptor for regulating pressure.
상세보기
Warren, Dee E.; Lopez, Dan, Vial adaptor for regulating pressure.
상세보기
Fangrow, Thomas F., Vial adaptors and methods for regulating pressure.
상세보기
Fangrow, Thomas F., Vial adaptors and methods for regulating pressure.
상세보기
Seifert, John M.; Fangrow, Thomas F., Vial adaptors and methods for regulating pressure.
상세보기
Fangrow, Thomas F., Vial adaptors and vials for regulating pressure.
상세보기
Fangrow, Thomas F., Vial adaptors and vials for regulating pressure.
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Fangrow, Thomas F., Vial for regulating pressure.
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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

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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연합인증

Venous pressure indicator 원문보기

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Venous pressure indicator 원문보기

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이 특허를 인용한 특허 (60)

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