CN104225756A - Exhalation valve - Google Patents

Detailed description of the invention

Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.

In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.

In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.

In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.

Below with reference to Fig. 1 to Figure 12, the outlet valve 100 according to the embodiment of the present invention is described.

According to the outlet valve 100 of the embodiment of the present invention, comprise outlet valve body 1, valve body 2, gel silica membrane 3 and driving device 4.

Wherein outlet valve body 1 can be plastics valve body, also can be metal valve body.

Valve body 2 is located on outlet valve body 1, and such as valve body 2 wears outlet valve body 1 and the two ends of valve body 2 are extended from the both side surface of outlet valve body 1.

As depicted in figs. 1 and 2, valve body 2 comprises interior pipe 21 and outer tube 22.Interior pipe 21 has interior pipe import 211 and inner tube outlet 212, and the gas that patient breathes out enters in interior pipe 21 from interior pipe import 211, then can flow out interior pipe 21 from inner tube outlet 212.

Outer tube 22 is set in the outside of interior pipe 21 to limit center-aisle 23 between outer tube 22 and interior pipe 21.As shown in Figure 2, center-aisle 23 one end (right-hand member in Fig. 2) close and the other end (left end in Fig. 2) open wide.Such as, as shown in Figure 1, the right-hand member of outer tube 22 can be connected directly between on the outer peripheral face of interior pipe 21.

The contiguous inner tube outlet 212 of gel silica membrane 3 arranges and closes the other end (left end in Fig. 2) of center-aisle 23.Be understandable that, as shown in Figure 2, gel silica membrane 3 is located in outer tube 22 and contiguous inner tube outlet 212 is arranged, when gel silica membrane 3 is not subject to external force, the distance of itself and inner tube outlet 212 can set according to actual needs, gel silica membrane 3 can be fixed in outer tube 22 and sealed outer pipe 22 by the hold down gag such as friction top 11 that will mention below, and such gel silica membrane 3 just can seal the left end of center-aisle 23.Gel silica membrane 3 has good elasticity, therefore can be out of shape to a certain extent.

Driving device 4 drives gel silica membrane 3 close and open inner tube outlet 212 by electromagnetic force.That is, driving device 4 drives gel silica membrane 3 to be out of shape with closed inner tube outlet 212 by electromagnetic force, and when driving device 4 does not drive gel silica membrane 3, gel silica membrane 3 resets, and inner tube outlet 212 reopens.

In one embodiment of the invention, driving device 4 can be electromagnetic actuator device.

As shown in Figure 3 and Figure 4, electromagnetic actuator device comprises: have the aluminium shell 42 of magnetic field shielding effect, thimble 41, thimble spring 43, permanent magnet 44, coil windings 45, outer yoke 46.

Wherein aluminium shell 42 has magnetic field shielding effect, so just can shield external magnetic field, prevents external magnetic field to the interference of internal magnetic field, increases the driving precision of electromagnetic actuator device 4.

When coil windings 45 is energized, the coil windings 45 of electromagnetic actuator device 4 under the excitation of electric current with permanent magnet 44(such as, permanent magnet), outer yoke 46 combined effect can produce electromagnetic push, this electromagnetic push can seesaw by drive coil winding 45.

Thimble 41 is fixed in coil windings 45, when coil windings 45 is outwards moved, thimble 41 also outwards moves together, thimble 41 is motion conflict gel silica membrane 3 outwards, thimble 41 can apply predetermined pressure to gel silica membrane 3 makes gel silica membrane 3 extrude the outlet generation pressure of interior pipe 21, this pressure produces pressure to the gas in center-aisle 23, thus indirectly accurately controls gas pressure in center-aisle 23, so just can change airway pressure and flow in outlet valve 100.

Thimble spring 43 is connected with thimble 41, and thimble spring 43 can make thimble 41 be connected with coil windings 45 better.Be understandable that, the electromagnetic push of driving device 4 in an embodiment of the invention can precise hard_drawn tuhes, thus the predetermined pressure of applying to gel silica membrane 3 also can fine adjustment, so just critically can regulate pressure and the flow of air flue in outlet valve 100.

Certainly, the present invention is not limited to this, based on electromagnetic induction principle, electromagnetic force can be relied on to drive the driving device of extruding gel silica membrane 3, all fall within the scope of protection of the present invention for other.

According to the outlet valve 100 of the embodiment of the present invention by arranging driving device 4, can realize applying gel silica membrane 3 can the electromagnetic push of precision control, thus the function of airway pressure and flow in fine adjustment outlet valve 100 can be realized, substantially increase the measuring accuracy of outlet valve 100, practicality is good.Compare the type of drive that tradition adopts, the outlet valve 100 according to the embodiment of the present invention eliminates source of the gas, and structure is compacter, simple simultaneously, and drives precision higher.

In one embodiment of the invention, outlet valve 100 also comprises connecting pipe 5 and locking knob 6.

Wherein connecting pipe 5 is connected with interior pipe import 211.As shown in Figure 2, one end (right-hand member in Fig. 2) of connecting pipe 5 is connected with interior pipe import 211, the other end (lower end in Fig. 2) of connecting pipe 5 is suitable for being connected with the breath device of patient (scheming not shown), and the gas that patient breathes out enters in interior pipe 21 from interior pipe import 211 by connecting pipe 5.Alternatively, connecting pipe 5 can be bend pipe.

Be understandable that, connecting pipe 5 is soft tube, and that is, connecting pipe 5 can bend arbitrarily to be connected with other parts.

As depicted in figs. 1 and 2, locking knob 6 to be fixed on outlet valve body 1 and the outside being enclosed within connecting pipe 5 so that connecting pipe 5 is fixed on outlet valve body 1.

Be understandable that, connecting pipe 5 is securely pressed on outlet valve body 1 by locking knob 6, can prevent from leaking gas between connecting pipe 5 and outlet valve body 1.

In one embodiment of the invention, between connecting pipe 5 and outlet valve body 1, be also provided with sealing member (scheming not shown), the gap that sealing member can be tightly connected between pipeline 5 and outlet valve body 1 better, prevent gas leakage.

According to one embodiment of present invention, as shown in Figure 7 and Figure 8, locking knob 6 is substantial cylindrical housing, the first through hole 62 is formed in locking knob 6, connecting pipe 5 is passed and is connected with outlet valve body 1 from the first through hole 62, the other end of locking knob 6 is close to outlet valve body 1, and on the other end of locking knob 6, be provided with multiple first projection 61, outlet valve body 1 is provided with multiple first draw-in groove (scheming not shown), multiple first draw-in groove coordinates to be fixed on outlet valve body 1 by locking knob 6 respectively correspondingly with multiple first projection 61.

Be understandable that, multiple first projections 61 on locking knob 6 can be combined in multiple with in the first projection 61 one to one the first draw-in groove by revotating card.Further, multiple first projection 61 can be evenly distributed on locking knob 6 outer peripheral face, correspondingly, multiple first draw-in groove is also correspondingly evenly distributed on outlet valve body 1, locking knob 6 and the junction of outlet valve body 1 can be made so stressed evenly, thus make locking knob 6 more firm with the connection of outlet valve body 1.Be understandable that, the quantity of the first protruding 61 and first draw-in groove, shape and size can be determined according to practical situation.

In one embodiment of the invention, locking knob 6 is provided with four the first projections 61, outlet valve body 1 is correspondingly also provided with four the first draw-in grooves, in addition, first projection 61 is also provided with groove, correspondingly, first draw-in groove is also provided with boss, boss and groove adaptation, when boss and groove engaging, four first projections 61 and four the first draw-in grooves are just locked and are put in place, and boss and groove fit can prevent four first protruding 61 loosening with four the first draw-in grooves, substantially increase engaging effect, make locking knob 6 more firm with the connection of outlet valve body 1.

Certainly, the present invention is not limited to this, and other can realize locking knob 6 and all fall within the scope of protection of the present invention with the construction and device that outlet valve body 1 is firmly connected.

In one embodiment of the invention, outlet valve 100 also comprises the pressure gauge 7 for measuring interior pipe 21 internal pressure.

As shown in Figure 2, pressure gauge 7 comprises: sealing block 71 and pressure transducer (scheming not shown).

Wherein, as shown in Figure 5 and Figure 6, have sealing block passage 711 in sealing block 71 and sealing block 71 be formed with the sealing block import 712 that communicates with sealing block passage 711 respectively and sealing block exports 713, sealing block 71 is embedded in valve body 2 and sealing block import 712 is communicated with interior pipe 21 inside.

Preferably, sealing block 71 to be located in valve body 2 and with valve body 2 interference fit, so just can realize the fitted seal between sealing block 71 and valve body 2 well, while sealing block 71 load and unload simple and fast, be convenient to replacing.

In one embodiment of the invention, sealing block 71 is made up of silica gel, has certain flexibility, can realize the fitted seal between silica gel sealing block 71 and valve body 2 well, and silica gel can be high temperature-resistant disinfected.When silica gel sealing block 71 life-time service generation ageing failure, be easy to quick-replaceable.

In one embodiment of the invention, as shown in Figure 5 and Figure 6, sealing block 71 is a generally rectangular bodies, the bottom surface and side of sealing block 71 are respectively formed outstanding lip type structure, i.e. lower lip type structure 715 and upper lip type structure 714, sealing block passage 711 connects lower lip type structure 715 and upper lip type structure 714, that is, lower lip type structure 715 is formed with sealing block import 712, and upper lip type structure 714 is formed with sealing block outlet 713.

Interior pipe 21 is formed an inner orifice, one end of sealing block passage 711 seals with inner orifice and is connected, that is, lower lip type structure 715 and inner orifice fitted seal, so just achieve sealing block import 712 to be communicated with interior pipe 21 inside, lower lip type structure 715 seals again the connection between sealing block 71 and inner orifice simultaneously.

In like manner, outlet valve body 1 is formed force samples hole, the other end of sealing block passage 711 seals with force samples hole and is connected, that is, upper lip type structure 714 and force samples hole fitted seal, so just achieve sealing block outlet 713 to be communicated with force samples hole, upper lip type structure 714 seals again the connection between sealing block 71 and outlet valve body 1 simultaneously.

Pressure transducer (scheming not shown) is located on outlet valve body 1, and pressure transducer and sealing block export 713 internal pressures be connected for detecting interior pipe 21.

The true pressure of interior pipe 21 inside is collected force samples point by sealing block 71 by pressure gauge 7, and pressure transducer measures the pressure of interior pipe 21 inside more exactly.

And sealing block 71 can be removed easily and carries out disinfection, it is inner that the gas that patient breathes out all is enclosed in valve body 2 by the outlet valve 100 that sealing block 71 is housed, and pollute very little to the external component of the valve body 2 of outlet valve 100, practicality is good.

In one embodiment of the invention, outlet valve 100 also comprises: sampling tube 8, vapour lock 83 and flow measurement device (scheming not shown).

Wherein, sampling tube 8 to be located on outlet valve body 1 and sampling tube 8 is communicated with center-aisle 23.Such as sampling tube 8 is metal tube.Be understandable that, sampling tube 8 directly can be connected with outlet valve body 1 and also can indirectly be connected, such as, in one embodiment of the invention, sampling tube 8 is connected with outlet valve body 1 by connecting hose 85 with outlet valve body 1, and connecting hose 85 can make sampling tube 8 and outlet valve body 1 realize being flexible coupling, and avoids junction to damage, prevent gas leakage, cause sampling tube 8 to be measured inaccurate.

During patient exhales, exhaling enters interior pipe 21 by connecting pipe 5, if now driving device 4 does not promote gel silica membrane 3 and closes inner tube outlet 212, gas can enter center-aisle 23 from inner tube outlet 212, thus gas can enter sampling tube 8 from center-aisle 23.

In one embodiment of the invention, as shown in Figure 1, an one-way membrane 86 is provided with at sampling tube 8 with the junction of center-aisle 23.One-way membrane 86 allows gas to enter sampling tube 8 from center-aisle 23, that is, one-way membrane 86 can stop gas to enter in center-aisle 23 from sampling tube 8 is reverse, so just can prevent the gas backstreaming of sampling tube 8 from entering center-aisle 23, affect the Measurement accuracy of flow.

As shown in Figure 1, sampling tube 8 is provided with the first gas collecting pipe 81 and the second gas collecting pipe 82 be communicated with sampling tube 8 inside respectively.First gas collecting pipe 81 near center-aisle 23, the second gas collecting pipe 82 relative to the first gas collecting pipe 81 away from center-aisle 23.

Vapour lock 83 is located in sampling tube 8, wherein the first gas collecting pipe 81 is positioned at the upstream side of vapour lock 83 and the second gas collecting pipe 82 is positioned at the downstream of vapour lock 83, that is, vapour lock 83 is located in the middle of the first gas collecting pipe 81 and the second gas collecting pipe 82, first gas collecting pipe 81 is near center-aisle 23, and the second gas collecting pipe 82 is far away apart from center-aisle 23 relative to the first gas collecting pipe 81.Vapour lock 83 can form gas pressure difference between the first gas collecting pipe 81 and the second gas collecting pipe 82.

In one embodiment of the invention, vapour lock 83 can comprise step shelf, step shelf parallel placement in the horizontal direction and being spaced apart from each other.In another embodiment of the present invention, vapour lock 83 also can comprise multiple through hole, and multiple through hole be arranged in parallel in the horizontal direction and is spaced apart from each other.

Be understandable that, concrete structure and operation principle etc. about vapour lock 83 have been prior art all, and are well known for ordinary skill in the art, and therefore no longer describe in detail here.

Certainly, the present invention includes but be not limited thereto, other can be implemented in the construction and device forming gas pressure difference between the first gas collecting pipe 81 and the second gas collecting pipe 82 and all fall within the scope of protection of the present invention.

Flow measurement device is connected with the second gas collecting pipe 82 with the first gas collecting pipe 81 respectively.In one embodiment of the invention, flow measurement device is flow transducer.Flow transducer can obtain the pressure differential from the gas in the first gas collecting pipe 81 and the second gas collecting pipe 82, then converses the gas flow in sampling tube 8 by existing computational methods such as Bei Nuli law and the principle of mass conservation.

According to one embodiment of present invention, sampling tube 8 is metal tube, and preferably, sampling tube 8 is the aluminum pipe that heat conductivity is good.

As shown in Figure 1, outlet valve 100 also comprises heater 84.Heater 84 is located on sampling tube 8 for heating sampling tube 8.The temperature in sampling tube 8 can be made like this to remain in predetermined temperature range, the steam in gas can be prevented well after temperature reduces to be condensed into water, thus condensed water can be avoided to enter flow transducer cause flow transducer to lose efficacy, expiratory gas flow cannot be measured exactly.Above-mentioned predetermined temperature range can be 33 DEG C-37 DEG C, is preferably 35 DEG C.

In one embodiment of the invention, heater 84 is electric heater unit, and as shown in Figure 9 and Figure 10, it comprises: electric heating silica gel plate base plate 842, electric heating silica gel plate 841, spring 844 and spring spool 843.

Wherein, as shown in Figure 9 and Figure 10, in electric heating silica gel plate 841, heating resistor is provided with, energising post-heating resistance heating, thus heating sampling tube 8.Electric heating silica gel plate 841 is formed as semicircular arc and is partly wrapped on the outer peripheral face of sampling tube 8, so just can heat sampling tube 8 well.

Electric heating silica gel plate base plate 842 is also semicircular arc, and electric heating silica gel plate base plate 842 to be set on electric heating silica gel plate 841 for fixing electric heating silica gel plate 841, and electric heating silica gel plate 841 is wrapped on the outer peripheral face of sampling tube 8 securely.

Spring 844 is located in spring spool 843, and spring spool 843 one end is connected with electric heating silica gel plate base plate 842, and spring spool 843 other end is only against on outlet valve body 1.Spring 844 and spring spool 843 can regulate the elasticity between electric heater unit 84 and sampling tube 8, so not only can installing/dismounting electric heater unit 84 easily, and can heat sampling tube 8 better.

In another embodiment of the present invention, heater 84 is heating resistor, and heating resistor can direct heating valve body 2, valve seat 12 and sampling tube 8, and the temperature in valve body 2, valve seat 12 and sampling tube 8 is remained in certain scope.

Be understandable that, heater 84 also can comprise temperature sensor (scheming not shown), and this temperature sensor can detect the temperature of sampling tube 8.

Such as, when the temperature that temperature sensor detects is more than or equal to 37 DEG C of temperature, temperature sensor sends signal to control system (scheming not shown), control system controls heater 84 and stops heating, when the temperature that temperature sensor 7 detects is lower than 33 DEG C, control system controls heater 84 and heats, and the gas temperature in such sampling tube 8 is just between 33 DEG C-37 DEG C substantially, and the steam in expiration can not be condensed into water.

Certainly, be understandable that, above-mentioned predetermined temperature also can be 35 DEG C, when the temperature that temperature sensor detects is higher than 35 DEG C of temperature, temperature sensor sends signal to control system (scheming not shown), and control system controls heater 84 and stops heating, when the temperature that temperature sensor detects is lower than 35 DEG C, control system controls heater 84 and heats, and the temperature of the gas in such sampling tube 8 is just in about 35 DEG C substantially, and the steam in expiration can not be condensed into water.

According to one embodiment of present invention, outlet valve 100 also comprises water accumulating cup 9.As shown in Figure 2, water accumulating cup 9 is located at the bottom of valve body 2 and is communicated with center-aisle 23 for collecting and storage of water.If the steam in exhaling condenses into water in interior pipe 21, water can flow in water accumulating cup 9, thus can prevent from condensed water from entering sensor well affecting testing result.

Be understandable that, the import in the vertical direction of water accumulating cup 9 is lower than the minimum point of sampling tube 8 with center-aisle 23 junction.Can ensure that water can not enter sampling tube 8 like this.

Be understandable that, concrete structure and operation principle etc. about water accumulating cup 9 have been prior art all, and are well known for ordinary skill in the art, and therefore no longer describe in detail here.

In one embodiment of the invention, outlet valve 100 also comprises friction top 11.Friction top 11 is located on outer tube 22 for fixing gel silica membrane 3.Such gel silica membrane 3 can sealed outer pipe 22 better under the effect of friction top 11, and that is, gel silica membrane 3 can seal the right-hand member of center-aisle 23 better.

According to one embodiment of present invention, as depicted in figs. 1 and 2, outlet valve 100 also comprises valve seat 12.

The outer tube 22 that valve seat 12 is set in valve body 2 is connected with described driving device 4.Be understandable that, valve seat 12 is fixed on the outer tube 22 of valve body 2 by the mode that is threaded is sheathed, and it is fixing with described driving device 4 that valve seat 12 overlaps the mode connected by screw.

As is illustrated by figs. 11 and 12, be formed with the second through hole 63 at valve seat 12 center, thimble 41 can apply electromagnetic push through the second through hole 63 pairs of gel silica membranes 3.

As depicted in figs. 1 and 2, valve seat 12 is located at the outside of gel silica membrane 3 and friction top 11 to limit valve support chamber between valve seat 12 and diaphragm, wherein valve seat 12 is formed with the ventilation device 13 by valve support chamber and outlet valve 100 ft connection.The external pressure of such diaphragm is always atmospheric pressure, and diaphragm can be made like this when powered magnetically-actuated, can realize quick response, improve the certainty of measurement of outlet valve 100, practicality is good.

In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.

Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.