Device for determining a condition of flow in a respiration system
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-005/087
A61B-005/097
A61M-016/20
출원번호
US-0469907
(2009-05-21)
등록번호
US-8814806
(2014-08-26)
우선권정보
DE-10 2008 028 733 (2008-06-17)
발명자
/ 주소
Kullik, Götz
Hansmann, Hans-Ullrich
Settgast, Dieter
출원인 / 주소
Dräger Medical GmbH
대리인 / 주소
McGlew and Tuttle, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A device for detecting the condition of flow in a respiration system combines the function of a nonreturn valve with the function of flow measurement in a common device. The device includes a valve arrangement (1) with a valve disk (9) and with a valve body (8), wherein the position of a valve disk
A device for detecting the condition of flow in a respiration system combines the function of a nonreturn valve with the function of flow measurement in a common device. The device includes a valve arrangement (1) with a valve disk (9) and with a valve body (8), wherein the position of a valve disk (9) in relation to a valve seat (11) is detected. An indicator for a flow and a direction of flow (5), (6) is determined from the position of the valve disk (9). The position of the valve disk (9) can be determined inductively, electrically, electromechanically or optically. The flow and direction of flow (5), (6) determined can be used to control the respiration in a medical device.
대표청구항▼
1. A device for determining a flow condition in a respiration system, the device comprising: a valve arrangement with a valve disk and with a valve body with a valve seat, the valve disk being connected to the valve body to define a nonreturn valve with flow passing through the nonreturn valve in a
1. A device for determining a flow condition in a respiration system, the device comprising: a valve arrangement with a valve disk and with a valve body with a valve seat, the valve disk being connected to the valve body to define a nonreturn valve with flow passing through the nonreturn valve in a flow direction of the nonreturn valve with movement of a portion of said valve disk relative to the valve seat by a distance that is a function of a flow quantity through the valve arrangement and blocking flow through the nonreturn valve in a flow blocking direction with the valve disk seated on the valve seat;a fluid flow quantity detector comprising: a magnetic element arranged in or at the valve disk, the magnetic element comprising at least one of magnetically conductive material with a relative magnetic permeability substantially greater than one and a magnetic material; anda magnetic element position detector comprising at least one of a coil arranged at said valve body for an inductive detection of a position of said valve disk in relation to said valve seat and a Reed relay or Hall sensor arranged at said valve body for an electromagnetic detection of a position of said valve disk in relation to said valve seat;a fluid flow direction detector comprising a contact element on one of said valve element and said valve seat and contact makers on another of said valve element and said valve seat for electrically detecting a position of said valve disk in relation to said valve seat whereby a direction of flow is determined based on whether the valve disk is seated on the valve seat or not; andan indicator for indicating a flow quantity and a direction of flow from the position of said valve disk in relation to said valve seat detected by said fluid flow quantity detector and said fluid flow direction detector. 2. A device in accordance with claim 1, wherein the position of said valve disk is determined by detecting a change in a circuit comprising said coil and said magnetically conductive material. 3. A device in accordance with claim 2, further comprising an electrically excited oscillatory circuit for detecting changes in the circuit. 4. A device in accordance with claim 1, wherein said detector further comprises a photoelectric cell for the optical detection of the position of a valve disk in relation to the valve seat. 5. A device in accordance with claim 1, wherein said valve disk is made of a nondeformable material. 6. A device in accordance with claim 1, wherein said valve disk is made of a flexible material. 7. A device in accordance with claim 1, wherein said valve disk and the connection of said valve disk to said valve body form a flow reaction device including a mechanical disk biasing means for biasing said valve disk toward a seated position with said valve disk seated on said valve seat and providing a relationship between the movement of the portion of said valve disk relative to the valve seat and the flow quantity through the valve arrangement. 8. A device in accordance with claim 7, wherein said mechanical disk biasing means comprises a prestressed mechanical spring biasing said valve disk toward a seated position with said valve disk seated on said valve seat and in part determining a relationship between the movement of the portion of said valve disk relative to the valve seat and the flow quantity through the valve arrangement. 9. A device in accordance with claim 7, wherein said mechanical disk biasing means comprises material of the valve disk biasing said valve disk toward a seated position with said valve disk seated on said valve seat and in part determining a relationship between the movement of the portion of said valve disk relative to the valve seat and the flow quantity through the valve arrangement. 10. A device in accordance with claim 1, wherein said valve disk is separably connected to said valve body via fastening points. 11. A device in accordance with claim 1, wherein the valve body has at least two fastening points displaced in relation to one another along a fastening axes and a mount in the valve body for unambiguously determining a connection of said valve disk to said valve body. 12. A device in accordance with claim 1, wherein said valve disk is provided with a groove to increase mobility of said valve disk. 13. A device in accordance with claim 1, wherein said indicator for indicating a flow quantity and a direction of flow forms control signals for controlling respiration in a medical device. 14. A device in accordance with claim 1, wherein; said valve disk is operatively connected to said valve body to form a flow reaction surface positioned to be acted on by breathing gas flow such that at least a portion of said valve disk moves away from said valve seat for breathing gas flow in the flow direction and a degree of movement, of said at least a portion of said valve disk, away from said valve seat in the flow direction is dependent on a rate of flow through said valve arrangement past said valve disk; andsaid arrangement of contact elements detecting a position of said valve disk in relation to said valve seat detects contact of said valve disk with said valve seat as an indication of direction of flow. 15. A respiration system comprising: a respiration breathing gas flow passage including an inspiration branch and an expiration branch with a patient connection; anda device for determining a flow condition in the breathing gas flow passage of the respiration system, the device comprising a nonreturn valve arrangement with a valve disk and with a valve body with a valve seat, said valve disk being connected to said valve disk to define a flow reaction device responsive to a breathing gas flow with at least a portion of said valve disk moving away from said valve seat for breathing gas flow in a flow direction of flow and with a degree of movement of said at least a portion of said valve disk away from said valve seat being dependent on a rate of flow through said nonreturn valve arrangement past said valve disk and with said valve disk being pressed by breathing gas flow in a flow blocking direction into contact with said valve seat to prevent fluid flow through said nonreturn valve arrangement past said valve disk in said flow blocking direction of the nonreturn valve arrangement, whereby said nonreturn valve arrangement allows breathing gas flow in the flow direction and prevents breathing gas flow in the blocking direction,a fluid flow quantity detector comprising: a magnetic element arranged in or at the valve disk, the magnetic element comprising at least one of magnetically conductive material with a relative magnetic permeability substantially greater than one and a magnetic material;a magnetic element position detector comprising at least one of a coil arranged at said valve body for an inductive detection of a position of said valve disk in relation to said valve seat and a Reed relay or Hall sensor arranged at said valve body for an electromagnetic detection of a position of said valve disk in relation to said valve seat;a fluid flow direction detector comprising a contact element on one of said valve element and said valve seat and contact makers on another of said valve element and said valve seat for electrically detecting a position of said valve disk in relation to said valve seat whereby a direction of flow is determined based on whether the valve disk is seated on the valve seat or not; andan indicator for indicating a flow quantity and a direction of flow from the position of said valve disk in relation to said valve seat detected by said fluid flow quantity detector and said fluid flow direction detector. 16. A respiration system in accordance with claim 15, wherein the position of said valve disk is determined by detecting a change in an electrically excited oscillatory circuit comprising said coil and said magnetically conductive material. 17. A respiration system in accordance with claim 15, wherein said flow reaction device further comprises a mechanical disk biasing means for biasing said valve disk toward a seated position with said valve disk seated on said valve seat and setting the degree of movement of the portion of said valve disk in relation to the rate of flow through said nonreturn valve arrangement. 18. A device for determining a flow condition in a respiration system, the device comprising: a nonreturn valve arrangement comprising a valve body with a valve seat and a valve disk, said valve disk being operatively connected to said valve body to form a flow reaction device reacting to a breathing gas flow by moving relative to said valve seat such that a portion of said valve disk moves a distance away from said valve seat, with breathing gas flow in a flow direction, with the distance moved being a function of the rate of flow through said nonreturn valve arrangement, and blocking flow through the nonreturn valve arrangement in a flow blocking direction with the valve disk seated on the valve seat;a fluid flow quantity detector comprising: a magnetic element arranged in or at the valve disk, the magnetic element comprising at least one of magnetically conductive material with a relative magnetic permeability substantially greater than one and a magnetic material; anda magnetic element position detector comprising at least one of a coil arranged at said valve body for an inductive detection of a position of said valve disk in relation to said valve seat and a Reed relay or Hall sensor arranged at said valve body for an electromagnetic detection of a position of said valve disk in relation to said valve seat;a fluid flow direction detector comprising a contact element on one of said valve element and said valve seat and contact makers on another of said valve element and said valve seat for electrically detecting a position of said valve disk in relation to said valve seat whereby a direction of flow is determined based on whether the valve disk is seated on the valve seat or not; andan indicator for indicating a flow quantity and a direction of flow from the position of said valve disk in relation to said valve seat detected by said fluid flow quantity detector and said fluid flow direction detector. 19. A device in accordance with claim 18, wherein said connection of said valve disk to said valve body to form said flow reaction device comprises a mechanical biasing device biasing said valve disk against said valve seat and with a bias force characteristic of said mechanical biasing device contributing to the function of the rate of flow in relation to the distance of the valve disk away from said valve seat. 20. A device in accordance with claim 18, wherein said indicator for indicating a flow quantity and a direction of flow forms control signals for controlling respiration in a medical device.
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이 특허에 인용된 특허 (5)
Itoh ; deceased Kazu (late of Tokyo JPX) Itoh ; legal representative Akira (Komae JPX), Closed circuit type respirator.
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