CN2149890Y - Instrument for treatment of male sexual obstruction - Google Patents

Abstract

The utility model relates to an andriatry medical apparatus for male sexual disfunction and maldevelopment of a penis, which is composed of a negative-pressure source, a receiving vessel with four interfaces and double layers of glass tubes, an electronic thermostatic system, an electronic timing and alarming system, a negative-pressure adjusting electromagnetic valve, etc. The apparatus can have synergistic function in various ways for iontophoresis of temperature, negative pressure and physic liquor, massage stimulation of water, etc. for prompting the rehabilitation of organs. The apparatus can provide more than two treatment ways for a plurality of patients at the same time without interference, and can also provide single treatment for a single patient. The utility model has the characrteristics of multi-function.

Description

Instrument for treatment of male sexual obstruction

This utility model is a kind of armarium of Andriatrics Dept. disease, is used for the treatment of Andriatrics Dept. diseases such as sexual impotence, premature ejaculation, anejaculation, prostatitis, senile hypofunction and microcaulia, can do simultaneously that male external genital organs is auxilliary to be looked into and pre-marital check-ups are used.

This armarium combines the traditional medicine of motherland and modern electronic technology, the patient is carried out the synergism of the multiple modes such as massage stimulation therapy of the iontophoresis of temperature, negative pressure, medicinal liquid and water, impel the organ rehabilitation, this equipment can carry out two kinds of treatments more than the method simultaneously to the multidigit patient, does not disturb mutually; Also can carry out the treatment of disposable's single method respectively, have the characteristics of a tractor serves several purposes.

Disclosed male external genital organs therapeutic instrument is but that accepter by negative pressure system, medicine liquid circulation, electromagnetic signal generation systems, magnetic therapy probe and receiving medical liquids and penis is formed by combining in Chinese utility model patent CN206942U, its shortcoming is the constant temperature weak effect of accepter, do not have the reporting system that regularly rings, the adjusting of negative pressure is inhomogeneous etc.

Task of the present utility model is to overcome above-mentioned weak point of the prior art and a kind of good constant-temperature effect that makes accepter is provided, and can regulate negative pressure equably, can set negative pressure turn-on time, and treatment finishes the Andriatrics Dept. armarium with acousto-optic ring newspaper.

The drawing of accompanying drawing is described as follows:

Fig. 1 is a control system block diagram of the present utility model

Fig. 2 is the double-deck glass-tube accepter of four interfaces of the present utility model figure

Fig. 3 is a kind of control chamber outline drawing of the present utility model

Fig. 4 is a timing ring reporting system circuit diagram of the present utility model

Fig. 5 is a constant temperature system circuit diagram of the present utility model

Fig. 6 is that negative pressure system of the present utility model connects and the circulating water loop sketch map

Fig. 7 is that negative pressure of the present utility model is regulated the electromagnetic valve profile

Fig. 8 is aeration control valve figure of the present utility model

Fig. 9 is this utility model negative pressure manual fine-tuning valve figure

Technical solution of the present utility model has adopted following structure and circuit: (a) the double-deck glass-tube recipient of four interfaces; (b) the electronic timing ring reporting system that is consisted of by emitter follower, timing capacitor, time-base integrated circuit, gate circuit, music circuit and loudspeaker etc.; (c) the electronic thermostatic regulator control system that is consisted of by electric heater, temperature sensor and four-operational amplifier etc.; (d) negative pressure electromagnetic valve for adjusting.

Space between the inner and outer pipes of the double-deck glass-tube accepter of four interfaces is the accepter tank for the thermostatted water circulation, the internal layer glass-tube has a penis posting port and two interfaces that connect negative pressure adjusting electromagnetic valve and negative pressure manual fine-tuning valve respectively, water inlet and outlet that two interfaces of its outer glass-tube are respectively the accepter tanks are connected among the closed circuit of thermostatted water.

Timing capacitor C1 in the electronic timing alarm connects power supply through microswitch K1, press K1 and can make the C1 quick charge, the anode of C1 also is connected with the radix of the BG1 of emitter follower, the emitter stage of BG1 connects the input of time-base integrated circuit, by C1, the input resistance of BG1, R1 and potentiometer W1 form the discharge circuit of C1, time-base integrated circuit outfan (3) is with relay line bag be connected (two groups of normally opened contacts of relay are controlled the power supply and the photoelectricity indicating circuit of negative pressure electromagnetic valve respectively), (3) end also is connected the output termination music circuit and the speaker of OR circuit with the capacitor C 2 of OR circuit input.Thereby make the adhesive of its outfan level conversion and relay and release suction by the charging of timing capacitor C1 and the conversion of discharge control time-base integrated circuit input level, the positive pulse signal that produces at outfan (3) when regularly finishing acts on the capacitor C 2 of OR circuit input, cause OR circuit and music circuit work, speaker sends music sound.

The electronic thermostatic system comprises electric heater, temperature sensor and four-operational amplifier, A1 in the four high guaily unit, A2, A3 all is connected into voltage follower, A4 is connected into voltage comparator, the output level that makes A2 is as reference current potential reference level, deliver to inverting input and the positive input of A4 respectively with the output signal of the A1 of actual temperature change and the output signal of the A3 that sets as required, (the two-stage normally opened contact of relay is distinguished control heater power supply and photoelectricity indicating circuit, and temperature value can be by 3 1/2 A/D converters by the BG1 of the output signal control driving stage of comparator A4 and relay line bag through back relatively, the 3 1/2 bit digital thermometeies indication that decoder driver and LED charactron etc. are formed.

It is to fix an aeration control valve on the upper valve body top of general two-position three way magnetic valve that negative pressure is regulated electromagnetic valve, and regulates the pressure of negative pressure bottle with the aeration screw rod on the aeration regulation valve core.

Advantage of the present utility model: the space between the inner and outer pipes of the double-deck glass-tube accepter of four interfaces is the tank for the thermostatted water circulation, by water tank, suction pump and accepter tank constitute the closed circuit of water, recirculated water is by electronic heater, temperature sensor, the electronic thermostatic system auto-control water temperature that four-operational amplifier and driving executive circuit etc. are formed, make the internal layer glass-tube of the accepter of receiving medical liquids and treatment organ in therapeutic process, be in homothermic water-bath state, thereby make accepter not be subjected to extraneous climatic influences, make patient's body and mind comfortable, help improving curative effect.The reporting system that regularly rings makes the medical worker preestablish treatment time according to the treatment needs, when treatment finishes, the circuit automatic disconnection is connected to the power supply of the negative pressure electromagnetic valve of accepter, and the negative pressure stop supplies is simultaneously with melodious melody ring newspaper, timing and negative pressure display lamp extinguish, the medical worker observes according to this and judges that what road treatment finishes, thereby has made things convenient for the medical worker in time to handle, and has saved the time and the energy, in effective time, increase treatment person-time, improved usage ratio of equipment.Negative pressure is regulated electromagnetic valve can regulate the accepter negative pressure equably.Negative pressure manual fine-tuning valve is used for the patient and finely tunes negative pressure at therapeutic process voluntarily according to feeling.This equipment can carry out the above treatment of two kinds of methods simultaneously for the multidigit patient, does not disturb mutually, also can supply the single individual event treatment that carries out, and has the characteristics of a tractor serves several purposes.

Embodiment of the present utility model is as follows:

Fig. 1 is the control system block diagram, and control system is controlled temperature setting, adjusting and the circulation of thermostatted water respectively; Be connected to the startup of the negative pressure system of accepting the negative pressure interface through the negative pressure control valve; Regularly the ring time set of reporting system, negative pressure was regulated electromagnetic valve 1/2 and was promptly connected negative pressure automatically once setting the time, and treatment finishes to have acousto-optic to show and negative pressure is regulated electromagnetic valve automatic disconnection negative pressure.

Fig. 2 is the double-deck glass-tube accepter of four interfaces figure, space between its inner and outer pipes is the accepter tank for the thermostatted water circulation, inner glass tube has a penis posting port ［ 26 ］ and two interfaces ［ 28 ］ that connect negative pressure adjusting electromagnetic valve ［ 27 ］ and negative pressure manual fine-tuning valve respectively, water inlet ［ 29 ］ that two interfaces of its outer glass-tube are respectively the accepter tanks and outlet ［ 30 ］, be connected among the closed circuit of thermostatted water, medicinal liquid injects from penis posting port ［ 26 ］ or ［ 27 ］, the flow through tank of the double-deck glass-tube receptor of four interfaces of thermostatted water makes the interior pipe that medicinal liquid and penis are housed be in homothermic water-bath state in therapeutic process, penis is subjected to the effect of negative pressure simultaneously, its sponge shape tissue elasticity tolerance increases, the blood filling volume increases, thereby make the corresponding growth of penis thick, medicinal liquid in the accepter contains androgen and the Chinese medicine effect of invigorating blood circulation can make the tissue of hair and blood pipe congestive state absorb (medicine iontophoresis), thereby reach multiple mode synergism, impel the effect of organ rehabilitation.The double-deck glass-tube receptor of other four interfaces has the effect of measuring penis length.

The double-deck glass-tube accepter of four interfaces has plurality of specifications, can select for use according to each patient's concrete condition, and the specification of present embodiment is: 255 millimeters of total lengths, penis posting port diameter: 40～42 millimeters.

Fig. 3 is a kind of control chamber outline drawing of the present utility model, a machine can be treated four patients simultaneously, feed-tank adds 18 liters in water before the start, place on and off switch ［ 19 ］ ON(to connect then) position, when carrying out the constant temperature adjustment, press homoiothermic button ［ 9 ］, regulate temperature control knob ［ 6 ］ simultaneously, observe the reading of character display ［ 5 ］, at this moment design temperature (red) lamp ［ 7 ］ is bright, when temperature reaches design temperature, stop to regulate temperature control knob ［ 6 ］, unclamp homoiothermic and set button ［ 9 ］, design temperature (red) lamp ［ 7 ］ extinguishes, thermometric (green) lamp ［ 8 ］ is bright, and water keeps constant temperature.The outlet of four road circulating water loops ［ 22 ］ uses 1 meter long silica gel tube to be connected with outlet ［ 30 ］ with the water inlet ［ 29 ］ of four accepters respectively with water return outlet ［ 24 ］, when pressing the button that draws water ［ 4 ］, thermostatted water circulates through the accepter tank, makes the interior pipe of receptor medicinal liquid be in homothermic water-bath state.At negative pressure condition, four groups of negative pressure jacks ［ 25 ］ are connected with the negative pressure interface ［ 27 ］ of latex tubing with four accepters respectively, inject medicinal liquid through penis posting port ［ 26 ］ or ［ 27 ］, penis is inserted accepter, press negative pressure main switch ［ 3 ］, the vacuum pump running, press the negative pressure button ［ 16 ］ of four groups of tape lights respectively, press timing button ［ 15 ］, the negative pressure of accepter can be regulated electromagnetic valve with negative pressure and be regulated and finely tune with negative negative pressure manual fine-tuning valve, negative pressure value is by pressure vacuum gauge ［ 12 ］ indication, and when regularly finishing, timing and negative pressure display lamp extinguish, intervalometer resets, and music sound takes place speaker ［ 1 ］.Play the test effect when voltage test points ［ 20 ］ and maintenance.The place of production ［ 21 ］ and title: the military region, Chengdu, therapeutic device for male sexual disfunction.

Fig. 4 is the reporting system circuit diagram that regularly rings, timing capacitor C1 connects 12 volts of power supplys through microswitch K1, the contact of C1 and K1 connects the base stage of the BG1 of emitter follower, the emitter stage of BG1 is connected with (6) with the input (2) of time base circuit with the contact of R1, the end of the W1 of another termination current potential of R1, the equal welding system ground wire of one end of the other end of W1 and sliding contact thereof and time base circuit, the relay line bag J1 of the diode D5 and the K switch 2 of connecting is in parallel, and be connected across between time base circuit outfan (3) and the 12 volts of power supplys, negative pressure is regulated a pair of normally opened contact J1-1 that line solenoid valve bag and 36 volts of power supplys thereof are succeeded electrical equipment respectively; The outfan of time base circuit (3) also is connected to the anode of R2 and C2, the negative terminal of the other end sending and receiving optical diode D1 of R2, the contact of D1 anode and D2 anode connects 5 volts of power supplys, the negative terminal of D2 and the R5 that an end ground connection arranged be connected on relay respectively another to normally opened contact J1-2, the negative terminal of C2 connects the negative terminal of Zener diode D3 and the end of R3, its common joint connects the input (2) of OR circuit, the other end welding system ground wire of the anode of D3 and R3, or outfan (8) the connecting resistance R4 of door, R4 connects the input of music circuit with the contact of the negative terminal of Zener diode D4, the positive ending grounding of D4, music circuit connects 5 volts of power supplys through resistance R 5, its output termination speaker.

The working condition of timing alarm: press negative pressure time switch K2, because of outfan is a high level, so relay J 1 not adhesive.Press K1, then C1 momentary charge to 12 lies prostrate supply voltage, K1 pop into position, the BG1 conducting of emitter follower, time base circuit work, C1 is through the input resistance of BG, R1 and W1 discharge, the voltage of its input (2) and (6) approaches the voltage on the C1, the time base circuit upset, outfan (3) jumps to low level, and timing indicator D1 lights, relay J 1 adhesive, its normally opened contact J1-1, the J1-2 closure, negative pressure is regulated line solenoid valve bag and 36 volts of power connections, and negative pressure display lamp D2 lights; Discharge along with C1, the voltage of time base circuit input (2) and (6) end gradually falls, and (3) end is kept low level, when (2) and (6) terminal voltage is reduced to 1/3 supply voltage, (3) end transition is high level, timing finishes, and timing indicator D1 extinguishes, and relay J 1 is released suction simultaneously, normally opened contact J1-1, J1-2 disconnects, so negative pressure is regulated electromagnetic valve coil and 36 volts of power supplys disconnections are that negative pressure is turn-offed, and the negative pressure display lamp extinguishes.The high level of (3) end transition is imported OR circuit through capacitor C2 with 5 volts pulse when regularly finishing, or the work of gate output terminal generation high level triggering music circuit, thereby speaker sends melodious music sound.

The selected time-base integrated circuit of this circuit is NE555, and OR circuit is 74LS32, C1=100 μ , C2=47 μ , W1=330K1, the β of R1=2KBG1 is between 90～120.

Fig. 5 is a constant temperature control circuit, comprise heater, temperature sensor and integrated four-operational amplifier, the A1 that four high guaily unit is big, A2, A3 all is connected into voltage follower, A4 is connected into voltage comparator, one termination power of pick off, the in-phase input end (3) of another termination A1, the outfan of A1 (1) connects the normally opened contact of button K1, its normally-closed contact connects A3 outfan (8), the input of contact knee-joint A/D converter, the contact of R4 and R5 connects the in-phase input end (5) of A2, another termination potentiometer W1 of R5, the equal ground connection of the other end of W1 and sliding contact thereof, the other end of R4 is connected with the contact of Zener diode D1 negative terminal with R3 with the contact of R6, another termination power of R3, the positive ending grounding of D1, capacitor C 1 is connected in parallel on the two ends of D1, the C1 negativing ending grounding, another termination potentiometer W2 of R6, the other end ground connection of W2, R2 is connected across between the inverting input of the contact of A3 in-phase input end (10) of sliding end of W2 and A4, R7 is connected across between the inverting input (12) and outfan (14) of A4, R2 is connected across between the in-phase input end (13) of the outfan (1) of A1 and A4, the outfan of A4 (14) also joins with the anode of diode D2, R13 is connected across between the base stage of BG1 of the negative terminal of D2 and drive circuit, relay line bag J1 is connected across between the colelctor electrode and power supply of BG1, heater touches out J1-1 through often opening of J1 and connects mains supply, diode D3 also is connected in the two ends of line bag, the colelctor electrode of the positive termination BG1 of D3, R9 is connected across between the emitter stage and ground of BG1, the emitter stage of the base stage BG of switching tube BG2 and the contact of R9, R11 is connected across between the base stage of the colelctor electrode of BG2 and switching tube BG3, the equal ground connection of the emitter stage of BG2 and BG3, its colelctor electrode joins with R10 and R12 respectively, green that the other end of R10 and R12 is set relay indicating light with light emitting diode D4(respectively---redness) and D5(thermometric display lamp---) negative pole joins, and the positive pole of D4 and D5 all connects power supply.3 1/2 A/D converters and decoder driver and LED charactron etc. are formed 3 1/2 bit digital formula thermometeies.

The working condition of temperature-control circuit is as follows: the variation that pick off is converted into voltage with variation of temperature is sent to the in-phase input end (3) of A1, the outfan of A1 (1) will reflect the magnitude of voltage of actual temperature, this voltage connects 3 feet (as tested voltage) of A/D converter through the normally opened contact of button K1, be added to the in-phase input end (13) of A4 simultaneously through R1, the reference voltage that is provided by D1 is added to the in-phase input end (5) of A2 after R4, R5 and W1 dividing potential drop, the outfan of A2 (7) connects 1 foot (as reference current potential benchmark) of A/D converter.The reference voltage that is provided by D1 also is added to the in-phase input end (10) of A3 after R6, W2 and R8 dividing potential drop, and is added to the inverting input (12) of A4 through R2.When rigidly connecting energize, because temperature is low, the resistance of pick off is bigger, the outfan of A1 (3) current potential height, so the current potential of A4 in-phase input end (13) is also high, A4 exports high level, the D2 conducting, BG1 is forward bias, so BG1 conducting, the relay adhesive, BG2 is conducting thereupon also, and D4 is bright, the power connection of heater, begin feedwater and heat, at this moment press K1, the reading of observed number word table, want regulator potentiometer W1 when adjusting for the first time, ammeter indication is conformed to actual design temperature, and voltage that will A2 outfan this moment (7) is as reference voltage, no longer adjustment later on, regulator potentiometer W2 leaves to design temperature until temperature then, stop to regulate W2, unclamp temperature and set button, the outfan (8) of A3 inserts the input of A/D converter through the normally-closed contact of K1 at this moment, display indication constant temperature value, the in-phase input end of A4 equates that with inverting input voltage A4 exports zero level, not conducting of D2, BG1 ends, relay is released and is inhaled the J1-1 disconnection, so heater stops heating, BG2 ends thereupon, D4 extinguishes, the current collection of BG2 is high potential very, so the BG3 conducting, lamp D5 is bright for thermometric (green), treat that temperature has then relay J 1 adhesive again that descends slightly, heater is task again, reaches, and design temperature relay J 1 is inhaled once more and released ... make water temperature keep constant with this.

The model of the four-operational amplifier that present embodiment is selected for use: 347, BG1:3DG12, BG2:3DG6, BG3:3DG6, R1=R2=10K, R3:510 Ω, R3:510 Ω, R4:5.1K, R5:1K, R6=R8=30K, R7=1.2M, R11=120K, R10=R12=1.2K.

Fig. 6 is that negative pressure system connects and the circulating water loop sketch map: negative pressure valve one termination vacuum pump, another termination negative pressure bottle, two other interface of negative pressure bottle is regulated electromagnetic valve with vacuum meter and negative pressure respectively and is joined, another port of negative pressure adjusting electromagnetic valve connects the negative port ［ 27 ］ of accepter, negative pressure bottle also is used for collecting from the moisture content of negative pressure pump and does not have fat, and prevent that the patient from flowing backward to vacuum pump to the accepter improper use with water and medicinal liquid, also have the effect of stable negative pressure simultaneously; Negative pressure is regulated electromagnetic valve has the effect of stable negative pressure also can regulate equably the negative pressure of accepter; The patient regulated negative pressure voluntarily according to the sensation of oneself during negative pressure manual fine-tuning valve was used for the treatment of.

This utility model flows to the multichannel accepter with vacuum pump through multichannel negative pressure electromagnetic valve branch negative pressure is provided; Therefore this equipment can be treated simultaneously for the multidigit patient, do not disturb mutually, also can supply the single individual event treatment that carries out, each road negative pressure is controlled treatment time with electronic timer respectively, treatment finishes to cut off automatically this road negative pressure and the song of playing music that rings, and puts out bright what road of distinguishing with light emitting diode and finishes.

Four tunnel negative pressure of present embodiment are used for four patients simultaneously.

The pump mouth of water tank is connected to the water inlet ［ 29 ］ of accepter through suction pump, and the outlet of accepter ［ 30 ］ is connected to the water return outlet of water tank, and when pressing suction pump power connection when drawing water button, water pump draws water from water tank, reflow tank behind the accepter tank of flowing through.The capacity of water tank is 18 liters.

Fig. 7 is that negative pressure regulates the electromagnetic valve profile: it is that vertical nut at two-position three way magnetic valve body ［ 34 ］ removes the valve body ［ 35 ］ that connects an aeration control valve and uses the screw rod of the spool ［ 31 ］ that matches with the aeration valve body to regulate negative pressure, its principle is as follows: after line bag joint ［ 33 ］ energized, line bag ［ 36 ］ produces magnetic field, spool ［ 37 ］ moves upward, to go up valve port ［ 32 ］ blocks, at this moment lower valve port ［ 40 ］ opens wide, bleeding point ［ 38 ］ forms path with air inlet ［ 39 ］, vacuum pump is bled to negative pressure bottle, utilizes the principle of pressure differential to regulate aeration spool ［ 31 ］ so that change negative pressure.

Fig. 8 is aeration control valve figure, comprise valve body and spool, the vertical external screw thread of the same electromagnetic valve body of the female thread of valve A section ［ 34 ］ is meshed, and the valve body of aeration valve is firmly fixed in the above, and the female thread of aeration valve body B section matches with the screw rod of aeration valve core ［ 31 ］ and closes regulating action.

Fig. 9 is a negative pressure manual fine-tuning valve, is made up of valve body and spool, and the female thread of valve body matches with the screw rod of spool and closes regulating action, be used for the patient at therapeutic process according to feeling fine setting voluntarily.

Claims (5)

1, a kind of therapeutic device for male sexual disfunction, but it be formed by combining by the accepter of negative pressure system, electromagnetic signal system and receiving medical liquids and penis, it is characterized in that having adopted following structure and circuit: (a) the double-deck glass-tube accepter of four interfaces; (b) the electronic timing ring reporting system that constitutes by emitter follower, timing capacitor, time base circuit OR circuit, music circuit and speaker etc.; (c) the electronic thermostatic system that constitutes by electric heater, temperature sensor and four-operational amplifier etc.; (d) negative pressure is regulated electromagnetic valve.

2, therapeutic device for male sexual disfunction according to claim 1, it is characterized in that the double-deck glass-tube receptor of said four interfaces, space between its inner and outer pipes is the accepter tank for the thermostatted water circulation, the internal layer glass-tube has a penis posting port and two interfaces that connect negative pressure adjusting electromagnetic valve and negative pressure manual fine-tuning valve respectively, water inlet and outlet that two interfaces of its outer glass-tube are respectively the accepter tanks are connected among the closed circuit of thermostatted water.

3, therapeutic device for male sexual disfunction according to claim 1, it is characterized in that the timing capacitor C1 in the said electronic timing ring reporting system connects power supply through microswitch K1, press K1 and can make the C1 quick charge, the anode of C1 also is connected with the base stage of the BG1 of emitter follower, the emitter stage of BG1 connects the input of time-base integrated circuit, by C1, the input resistance of BG1, R1 and potentiometer W1 form the discharge circuit of C1, time-base integrated circuit outfan (3) is with relay line bag be connected (two groups of normally opened contacts of relay are controlled the power supply and the photoelectricity indicating circuit of negative pressure electromagnetic valve respectively), (3) end also is connected with the capacitor C 2 of OR circuit input, the output termination music circuit and the speaker of OR circuit, by the charging of timing circuit and the conversion of discharge control time-base integrated circuit input level, thereby make the adhesive of its outfan level conversion and relay and release suction, the positive pulse signal that produces at outfan (3) when regularly finishing acts on or the capacitor C 2 of door input, cause OR circuit and music circuit work, speaker sends music sound.

4, therapeutic device for male sexual disfunction according to claim 1, it is characterized in that said electronic thermostatic system comprises electric heater, temperature sensor and four-operational amplifier, A1 in the four high guaily unit, A2, A3 all is connected into voltage follower, A4 is connected into voltage comparator, the output level that makes A2 is as reference current potential reference level, deliver to inverting input and the positive input of A4 respectively with the output signal of the A1 of actual temperature change and the output signal of the A3 that sets as required, (two groups of normally opened contacts of relay are distinguished control heater power supply and photoelectricity indicating circuit, and temperature value can be by 3 1/2 A/D converters by the BG1 of its output signal control driving stage and relay line bag after relatively through comparator, the 3 1/2 bit digital thermometeies indication that decoder driver and LED charactron etc. are formed.

5, therapeutic device for male sexual disfunction according to claim 1 is characterized in that it is the pressure of fixing an aeration control valve on the upper valve body top of general two-position three way magnetic valve and regulating negative pressure bottle with the aeration screw rod on the aeration regulating spool that said negative pressure is regulated electromagnetic valve.

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