• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a device for detecting the state of fate in a one-breath system, which combines functions of a non-return valve with the function of the hose by measuring fate in a common device. The device consists of a valve arrangement (1) with a valve disc (9) and a valve body (8), wherein the position of the valve disc (9) in relation to a valve seat (11) is registered and a dimension is determined from the position of the valve disc (9). on fl fate and one through fl direction of destiny (5, 6). The position (9) of the valve disc can be determined inductively, electrically, electromechanically or optically. The determined fl fate and through fl the direction of fate (5, 6) can be used to disturb the respiration in a medical device (Figure 1).
    公开号:SE534025C2
    申请号:SE0900503
    申请日:2009-04-16
    公开日:2011-04-05
    发明作者:Goetz Kullik；Hans-Ullrich Hansmann；Dieter Settgast
    申请人:Draeger Medical Ag；
    IPC主号:
    专利说明:

    534 025 2 and seals through the fate opening at a flat abutment in the valve seat. If a throughput from the side of the holding element acts against the disc, or there is a pressure drop between the side of the holding element and the opposite side of the disc, the disc moves so that the output can reach through the valve. This is the reverse direction of the non-return valve. If the flow from the opposite side of the disc acts on the disc, the holding element prevents a movement of the disc, and no fl fate can come through the valve. This is the reverse direction of the check valve.
    The movement of the disc is used in the present invention to record the flow of a gas.
    In a first embodiment, a wound coil such as inductance is arranged around the passage opening of the valve, which together with a capacitance forms an electric oscillation circuit. The oscillation circuit has a resonant frequency determined by inductance and capacitance. The valve disc of a non-deformable material, for example ceramic, which abuts against the passage opening of the valve in the valve seat, and which seals through this arrangement, is in this first embodiment according to the invention designed so that an electrically conductive element with a magnetic perneability number if approximately one is arranged as a valve element on or in the disc. Due to its position relative to the coil, the electrically conductive element determines an effect on the magnetic field by inducing an eddy current in the electrically conductive element.
    The eddy current is a load for the oscillating circuit that takes energy from the oscillating circuit. The size of the load depends on the position of the disc in relation to the spool. If the disk is removed from the coil due to through the fl fate, and thus also the electrically conductive element, the eddy current losses in the magnetic-electric circuit in the arrangement become smaller. If the oscillating circuit is stimulated from the outside by means of an alternating electrical voltage in the vicinity of the resonant frequency, the resulting oscillating circuit amplitude can be evaluated as a measure of the removal of the electrically conductive element from the coil and thus as a measure of the size of the disk. With the help of a characteristic that is taken from via the amplitude change per through fl amount of fate, it is thus possible to distinguish both between inhalation and exhalation phases as well as to perform a quantitative evaluation of the flow rate. The evaluation of the position of the valve disc makes it possible to determine the fate and direction of fate. Flow and direction can be used for respiratory control in a medical device, for example in a respirator or in an anesthesia device.
    An alternative variant of the first embodiment according to the invention differs from this in that the valve disc is designed so that instead of an electrically conductive element a magnetically conductive element is arranged with a magnetic permeability number which is >> 1 as a valve element on or in the disc. This results, so to speak, in an arrangement of a coil with a metal core and an air gap. The dimensions of the air gap in this second embodiment according to the invention vary due to the movement of the valve stem. Thus, the total inductance of the arrangement is changed by the resonant frequency of the arrangement of the valve disc due to the movements of the valve disc brought about by the direction of the fate and thus in cooperation with the capacitance. If the external oscillation circuit is stimulated by means of an electrical alternating voltage in the vicinity of the resonant frequency, then the resulting change in the goodness number of the oscillating circuit is a measure of the change of the air gap in the magnetic circuit and thus a measure of the removal of the magnetically conductive element from coil, and can finally be evaluated as a measure of the magnitude of the movements of the disk due to the flow.
    The design of the oscillation circuit of the first embodiment is preferably chosen so that the resonant frequency is above the audible range in humans of about 20 kHz, as the upper limit value of the resonant frequency a value of 500 kHz is suitable, to achieve a sufficient penetration depth for the magnetic field and to achieve a sufficient measuring effect. In a variant of the first embodiment according to the invention, the valve disc is kept in a rest position by means of a prestressed mechanical spring element. Fjâdem's characteristic is such that the valve disc is lifted by fl fate towards fi the noble daft. In such an arrangement, the valve can be used in any mounting position, since the spring characteristics mainly determine the path and position of the valve disc depending on the fate.
    In a preferred embodiment of the first embodiment according to the invention, a sheet of flexible material is fixed in the center of the passage opening on a holder structure. The holder structure is preferably designed as a star and attached to the edge of the passage opening. The flexible valve disc is attached to the center of the holder structure. The mode of operation is obtained by an elastic deformation and bending of the disc in the edge area, whereby the air can pass the valve from a flow direction, without flow the elastic deformation is restored back to the original state and closes the valve again. From the other through the fl direction of fate, a deformation of the valve is avoided in that the contact surface for the valve disc in the valve seat does not allow any play for deformation. This arrangement with a valve disc of flexible material according to this preferred embodiment gives the advantage that the valve can operate without additional spring elements in an arbitrary mounting position, since the gravity acting on the valve disc is not used for sealing.
    In a preferred manner, the holder structure and the flexible valve disc are designed so that the valve disc can be replaced by the user during cleaning and maintenance work. For such a replacement part, a number of flexible synthetic materials, elastomers or foils, for example neoprene or silicone, are available as material for the valve disc, since there are no specific requirements for hygienic pre-treatment due to single use.
    In a second embodiment according to the invention, the closing of the valve is registered by means of a contact. In this case, a flexible valve disc is mounted eccentrically by means of at least one attachment point on a holder structure in the passage opening. On the side opposite the fastening side, a pair of contacts is arranged which registers the closing of the valve. In the outer contour of the passage opening, a valve seat is designed as a sealing closing surface for the valve.
    In an alternative variant of the preferred embodiment, the contact pair is designed as an electromagnetic contact pair. In this case, an element of magnetic material is arranged on or in the valve disc. In the closing surface of the valve there is an electromagnetic contact, preferably in the form of a Hall sensor or a Reed relay arranged, which is provided with electrical leads. When the valve is closed, the electromagnetic element is affected by the magnets in the valve disc, and the electrical connection that occurs is measurable by an electrical continuity or resistance measurement. 534 025 4 A third embodiment of the invention consists of a combination of the first embodiment with the second embodiment. A flexible valve disc is then fastened eccentrically by means of at least one fastening point on a holder structure in the passage opening. The valve disc is provided with a magnetically or electrically conductive material whose approach to the valve seat can be registered via an arrangement in an oscillating circuit according to the first embodiment. The evaluation of the contact pair serves to register a valve movement, which, when the contact is closed, constitutes an end time for the inhalation phase and allows a registration of respiratory cycles, the evaluation of the field change aims at a further quantitative evaluation of the throughput velocity via the registered opening path for the valve.
    Exemplary embodiments of the invention are illustrated in more detail below in connection with the drawings.
    These show: Figure 1 A first valve arrangement with a non-defensible valve disc and a coil arrangement, Figure 2 The first valve arrangement according to Figure 1 in closed condition with magnetic field lines drawn, Figure 3 The first valve arrangement according to Figure 1 in open condition with magnetic field lines drawn, Figure 4 An arrangement for electrical evaluation of the movement of the valve disc for the valves shown in Figures 1, 2, 3, Figure 5 A second valve arrangement with an elastic valve disc and a coil arrangement in closed condition, Figure 6 The second valve arrangement according to Figure 5 in the open state, Figure 7 The second valve arrangement in a detailed representation of the elastic valve disc and the holder structure, Figure 8 A side view of the holder structure for the second valve arrangement according to Figures 5 to 7, Figure 9 A third valve arrangement with a valve disc and with a contactor arrangement in open condition, Figure 10 The third valve arrangement according to Fig r 9 in closed condition, Figure 1 1 The third valve arrangement in a detailed representation of the third valve disc and the valve body, Figure 12 A variant of the first valve arrangement, Figure 13 A variant of the third valve arrangement, 534 025 5 Figure 1 shows a principal construction of a first valve arrangement 1 according to the invention in half section along the horizontal axis 25 symmetrically with the central axis 13, which comprises a circular first valve disc 9 with a first valve element 10, designed as an embedded magnetic element, with a magnetic perneability. substantially larger than 1, a valve seat and a cylindrical valve body 8 with a spool 12 arranged thereon.
    Figure 2 shows the first valve arrangement 1 according to Figure 1, wherein the first valve disc 9 with the embedded element 10 erroneously rests on a first valve seat 1 1. For similar elements the same reference numerals are used as in Figure 1. Furthermore, a first magnetic field line sequence 14 is drawn in a closed state for the first valve arrangement 1. The flow from the second through the direction of fate 6 cannot flow through the valve.
    Figure 3 shows the first valve disc 9 which is lifted due to through the fate of the first through the direction of fate 5, and a second magnetic field line conductor 15 in the open state for the valve arrangement 1 according to Figure 1. For similar elements the same reference numerals are used as in Figure 1. The different processes for the magnetic field lines 14, 15 at open and closed valve disc 9 are shown in Figures 2 and 3.
    Figure 4 shows how the valve arrangement 1 according to the invention in accordance with Figures 1, 2, 3 is incorporated in an electronic circuit via a connection contact pair 31. For similar elements the same reference numerals are used as in Figure 1. The first valve disc 9 rests on a first valve seat ll. A first valve element is embedded in the first valve disc 9 fi. An electronic drive circuit 30 comprises an arrangement of a capacitor 32, which together with the coil 12 present on the valve body 8 forms an electric oscillation circuit with a typical resonant frequency. The parallel resistor 36 is suitably designed to set the attenuation of the oscillating circuit. Via an AC voltage source 34 with the ballast resistor 33, the oscillation circuit in the vicinity of its resonant frequency is stimulated to oscillation. The first valve element 10 provides an attenuation of the oscillation circuit amplitude, which is given by a proportional relationship of the distance from the first valve element 10 to the coil 12. Via a voltage measuring device 35, the amplitude of the oscillation can be measured.
    Figure 5 shows a second valve arrangement 2 with the special feature of an elastic second valve disc 16 and a holder structure 19 for attaching the second valve disc 16.
    The figure shows the second valve disc 16 with a second valve element 23, designed as an embedded magnetic element with a magnetic permeability number substantially greater than 1, a second valve seat 18 and a cylindrical valve body 8 with a coil 12 arranged thereon. the valve arrangement 2 is then shown in the closed state, the second valve disc 16 with the second valve element 23 being attached to the holder structure 19, resting sealingly on the second valve seat 18 and in this way one through block enligt according to the other through fl direction of fate 6 is blocked.
    Figure 6 shows the second valve disc 16 which is lifted by means of the från from the first through the fl direction of fate 5, in the open condition of the second valve arrangement 2 according to Figure 5. For similar elements the same reference numerals are used as in Figure 5. The second valve disc 16 is lifted at the edge from the second valve seat due to the flexible embodiment, through the fate, and through the fate opening 7 (Figure 7) 534 025 6 is thereby released and air can flow through the second valve arrangement 2 in accordance with the first direction of fate 5.
    Figure 7 shows a top view of the second valve arrangement 2 in accordance with Figures 5 and 6 of a second valve disc 16 and a holder structure 19 prior to assembly. For similar elements, the same reference numerals are used as in Figure 5. The holder structure 19 with an attachment point 20 occupies the attachment hole 17 in the second valve disc 16. Figure 7 further shows that the holder structure 19 leaves a through-opening opening free. The holder structure 20 in this example is circularly formed by three support struts 24 with a centered attachment point 20. Other forms of the holder structure 19 are likewise possible.
    Figure 8 shows a side view of the holder structure 19 and the attachment point 20 in detail. For the function of the second valve arrangement 16, the conditions for the dimensions of the attachment point 20 and the second valve disc 16 are decisive. The mounting hole 17 in the second valve disc 16 has a smaller diameter than the cap 21 of the mounting point 20. The mounting diaphragms 22 of the mounting point 20 are smaller than the diameter of the mounting hole 17 (Fig. 7) for the second valve disc 16. These dimensional conditions result in the second the valve disc 16, due to the elastic material, can be joined to the attachment point 20 via the cap 21, but after the joining it can no longer be detached from the attachment point 20 due to the fate via the cap 21. The second valve disc 16 is held with sufficient tolerance to the mounting diapers 22 of the attachment point 20 in order to be able to follow the fate elastically. For use, this means that before the second valve arrangement 2 is put into use, the second valve disc 16 is inserted into the holder structure 19 and after use it can be easily removed again, so that it becomes possible to separately treat or discard the second valve disc 16 and the valve body 8. .
    Figure 9 shows a third valve arrangement 3 in half section along the horizontal axis 25 symmetrically with the section axis 15 with a third valve disc 28 and with a contact arrangement. The contact arrangement consists of electrical contact elements 26, which are electrically connected to each other via an electrical contact bridge 27 in the idle state. In the shown open condition for the third valve arrangement 3, the electrical contact is broken. Air flows in accordance with the first through the direction of fate 5 through the third valve arrangement 3. The broken contact is contacted via the connection contacts 31 and by means of an evaluation circuit (not shown) is detected, for example, by means of a continuity test or resistance measurement. The signal thus registered can be used as a trigger signal for controlling respiration. The third valve disc 28 is then connected to the valve body 8 via a cutter 40.
    The attachment point 20 with a cap 21 pours the third valve disc 28 fixed to the valve body 8 along the side. The third valve disc 28 is formed with reinforcement in the position corresponding to the groove 40. Immediately next to the groove 40 there is a groove 41 inserted in the third valve disc, whereby the third valve disc 28 is elastically movably mounted to the valve body 8 and can follow the fate movement.
    Figure 10 shows the third valve arrangement 3 according to Figure 9 in closed condition. For similar elements, the same reference numerals are used as in Figure 9. One through fl fate in accordance with the other through fl fate direction 6 is thereby blocked by the position of the third valve disc 28. The contact connection can be contacted via the connection contacts 31 and registered by means of an evaluation circuit (not shown), for example by means of a continuity test or resistance measurement. The signal thus registered can be used as a trigger signal for controlling the respiration in a respirator.
    Figure 1 1 shows a design of the third valve arrangement of a third valve disc 29 and a cylindrical, in relation to the central axis symmetrical valve body according to Figures 10 and 11 before joining, in a three-dimensional view. For similar elements, the same reference numerals are used as in Figures 10 and 11. The attachment points 26 in the groove 40 on the valve body occupy the mounting holes 17 of the valve disc 28. For the function of the third valve arrangement 3, the relations between the dimensions of the fastening points 20 and the third valve disc 28 are decisive. The mounting holes 17 in the third valve disc 28 have a smaller diameter than the caps 21 on the mounting points 20. The mounting diameter of the mounting points 20 is smaller than the diameter of the mounting holes 17 of the third valve disc 28. These relationships between the dimensions result in the third valve disc 28 the elastic material can be joined to the attachment points 20 via the caps 21, but after joining it can no longer be released away from the attachment point over the cap 2 1 due to the fate. The third valve disc 28 is held with sufficient tolerance to the attachment diameter 22 on the attachment points 20 to be able to elastically follow fl fate. For use in practice, this means that before the third valve arrangement 3 is used, the third valve disc 28 is inserted into the valve body 8, and after use it can be easily removed again, so that separate treatment or disposal of the third valve disc 28 and the valve body 8 is possible. - done. Insertion of the third valve disc 28 into the groove 40 takes place via two attachment points 20, the attachment points 20 being asymmetrically arranged on two vertically offset attachment shafts 29 in the valve body 8, and that the design of the third valve disc 28 is chosen so that only one unambiguous attachment option for the valve disc 28 on the valve body 8 is possible. This eliminates incorrect installation. The uniqueness is further given by the asymmetry of the attachment points 20 in connection with the groove 40, in combination with the semicircular and square shape of the valve disc 28 on one side.
    Figure 12 shows the first valve arrangement 1 according to Figure 1 of the valve disc 9 with embedded valve element 10 and a coil 12 with additional metal element mounted on the valve body 8. For similar elements, the same reference numerals are used as in Figure 1. The metal element 39 provides a control of the magnetic field lines and thereby amplifies the measuring effect caused by the movement of the first valve disc 9.
    Figure 13 depicts a variant of the third arrangement according to Figure 9. For similar elements, the same reference numerals are used as in Figure 9 and Figure 1. In this variant, a coil 12 and a valve element with a contact arrangement consisting of electrical contact elements 26 and an electrical contact bridge 27 arranged on the valve body 8. In this variant, an evaluation of the contact connection for recording the breathing phase can be used, for example for triggering a respirator. The position of the valve element 10 in or on the third valve disc 28 in relation to the coil arranged around the coil body 8 affects the properties of the magnetic field. The evaluation of the change in the magnetic field properties takes place with the aid of a drive electronics (Figure 4) and results in an additional quantitative measure of fate as an additional measuring variable in addition to the respiratory phase registration. 534 025 List of Reference Designations -å-ÄOJOJCDOOWOJCDCOBDMIONDBJIQMDNH> - ^ rI »-I» -Ir-I »-I» -Ih- ^ II OW IO OIJÄO) IOH r- O OO U1JÄO) OCX> IO UI bOONF-'OOWNÛCII-IÄCAJBJ FL * O first valve arrangement, the second ventílarrangemang third valve arrangements fourth ventílarrangemang firstly by al ödesriktning others by flow through al ödesöppnírlg valve body first ventílskiva first valve element first ventilsåte coil nrittaxel first magnetfåltlinjeförlopp second magnetfåltlinjeförlopp second valve disc mounting bores second valve seat support structure attachment point hood mounting diaxes second valve element support strut horizontal shaft contact element contact bridge third valve disc mounting shaft drive electronics connection contact pair capacitor ballast resistor AC voltage source voltage measuring device parallel resistor metal element cutting groove
    权利要求:
    Claims (13)
    [1]
    Device for determining a fate condition at a non-return valve in a respiratory system, consisting of a valve arrangement (3) with a valve disc (28), a valve seat (11), a valve body (8), a valve element (23) and a coil (12), contact element (26) and a contact sensor (27), the position of the valve disc (9, 16, 28) relative to a valve seat (11, 18) being electromagnetically registered with a valve element (23), and from the valve disc ( 9, 16, 28) position in relation to the valve seat (1 l, 18) a measure of a fl is determined, and the position of the valve disc (28) in relation to the valve seat is electrically registered with an arrangement of contact elements (26) and contact sensors ( 27).
    [2]
    Device according to claim 1, wherein the valve element (10, 23) is designed so that it is electrically conductive, and wherein the position of the valve disc (9, 16) is determined by means of a registration of an eddy current change in the magnetic-electrical circuit.
    [3]
    Device according to claim 1, wherein the valve element (10, 23) is designed so that it is magnetically conductive and wherein the position of the valve disc (9, 16) is determined by a registration of an air gap change in the magnetic circuit.
    [4]
    Device according to claim 2, with an electrically stimulated oscillation circuit for detecting the eddy current change.
    [5]
    Device according to claim 3, with an electrically stimulated oscillation circuit for recording the air gap change.
    [6]
    Device according to claim 1, with a magnetic valve element (23) in combination with a Reed relay or a Hall sensor for electromagnetic detection of the position of the valve disc (28) relative to the valve seat (1 1, 18). 534 025 10
    [7]
    Device according to any one of the preceding claims, wherein the valve disc (9) is formed of a non-deformable material.
    [8]
    Device according to any one of the preceding claims, wherein the valve disc (16, 28) is formed of flexible material.
    [9]
    Device according to one of the preceding claims, wherein a prestressed mechanical spring holds the valve disc (9) in a rest position.
    [10]
    Device according to one of the preceding claims, wherein the valve disc (16, 28) is separably connected to the valve body (8) via fastening points (20).
    [11]
    Device according to one of the preceding claims, wherein at least two fastening points (20) displaced in the fastening shafts (29) relative to each other and a groove (40) in the valve body (8) unambiguously secure the connection between the valve disc (28) and the valve body (8).
    [12]
    Device according to any one of the preceding claims, wherein the valve disc (28) is provided with a groove (41) for increasing the mobility.
    [13]
    Device according to one of the preceding claims, wherein fl fate and through fl the direction of fate (5, 6) are used for controlling the respiration in a medical device.
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    同族专利:
    公开号 | 公开日
    US20090312661A1|2009-12-17|
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    US8814806B2|2014-08-26|
    SE0900503L|2009-12-18|
    DE102008028733B4|2016-02-04|
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    法律状态:
    2018-12-04| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102008028733.4A|DE102008028733B4|2008-06-17|2008-06-17|Device for determining a flow state in a breathing system|
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