CN2096354U - Plus-minus air pressure treatment apparatus for limbs - Google Patents

Abstract

The utility model relates to a positive and negative air pressure treatment apparatus for the limbs of human body, composed of a treatment chamber, a vacuum pump, four electromagnetic valves, and an electric control part. The entrance of the affected limb of the treatment chamber is provided with a ring-shaped air bag whose inside is embedded with a skeleton. The electromagnetic valves and the vacuum pump form an air inflation branch and an air evacuation branch, which can realize the simplex treatment of positive or negative pressure, and the alternating treatment of positive and negative pressure. The treatment of high pressure oxygen can be realized after an oxygen source is connected.

Description

Plus-minus air pressure treatment apparatus for limbs

This utility model relates to the device that a kind of limbs to the people carry out positive and negative air pressure treatment.

The treatment of limbs air pressure is a kind of new therapy that just rises over past ten years in the world.Present limbs air pressure therapy equipment function singleness adopts hyperbaric oxygen more, is exactly this device as Russian Patent SU-377785.The employing air positive pressure that also has, its structure mainly are grouped into by treatment storehouse, air pump, air valve and electric control part, are provided with the resilient sleeve armband as sealing member in the limbs porch in treatment storehouse.Suffer from limb and stretch into the treatment storehouse, to the inflation of treatment storehouse, treat then by oversleeve.The elastic force that the weak point of said apparatus is to only depend on oversleeve is to the limbs inlet seal, its poor effect; Vary with each individual owing to the limbs thickness in addition, so oversleeve is also just different to the pressure of limbs.Pressure is crossed senior general influences the limbs blood circulation, causes therapeutic effect bad.Along with the research of advancing, proposed the air pressure therapy of various ways, and the above-mentioned therapy equipment that only has simple function the needs of development can not have been adapted in recent years to limbs air pressure therapy.

The purpose of this utility model provides a kind of good seal performance, cut and can realize that simple malleation or negative pressure, positive negative pressure are alternately and the positive and negative therapy equipment of limbs of hyperbaric oxygentherapy.

The solution that realizes this utility model purpose is: the therapy equipment that is provided comprises treatment storehouse, vacuum pump, four three-way solenoid valves and automatically controlled part.Limbs porch in the treatment storehouse is provided with a ring packing air bag, the embedded ring skeleton of air bag.Above-mentioned treatment storehouse, first, second reversal valve, vacuum pump, the 3rd, the 4th reversal valve and pressure bladder are connected in series successively, and wherein another QI KOU of first reversal valve connects the hyperbaric oxygen source of the gas; Another QI KOU of the second and the 3rd reversal valve is a drain; Another QI KOU of the 4th reversal valve and the gas circuit between first, second reversal valve are joined, and form an inflation branch road.The state of above-mentioned four reversal valves is controlled by automatically controlled part.To suffer from limb during treatment and put in the treatment storehouse, start vacuum pump.When the 4th reversal valve moved, the vacuum pump gas outlet was communicated with air bag, and inflation will be treated the storehouse inlet seal, and the 4th reversal valve resets, and the air bag gas circuit is blocked; When second, third diverter valve imoperative (coil no power), the inflation branch road is communicated with the treatment storehouse, realizes positive pressure therapy; The gas circuit of bleeding when second, third reversal valve work is communicated with the treatment storehouse, realizes negative pressure treatment; When second, third reversal valve periodically commutates, can realize the positive and negative pressure alternating treatment; After the action of first reversal valve, treatment storehouse and hyperbaric oxygen source of the gas are connected, and realize hyperbaric oxygentherapy.

Below in conjunction with accompanying drawing content of the present utility model is described in detail.

Fig. 1 is overall structure figure of the present utility model.

Fig. 2 is the structure chart of pressure bladder.

Fig. 3 is an air pressure schematic diagram of the present utility model.

Fig. 4 is that positive and negative pressure replaces and the holding pressure control schematic diagram.

Fig. 5 is the pressure control circuit schematic diagram.

Fig. 6 is that positive and negative pressure replaces the delay circuit schematic diagram.

Fig. 7 is the control principle figure of solenoid directional control valve.

As shown in Figure 1: treatment storehouse 1 is contained on the lifting type frame 2, and can rotate to an angle around axle 3, and to adapt to patient's needs, its height and inclination angle are respectively by pin 4,5 location.Gas-pressure component cabinet 6 is equipped with in the bottom of frame 2, and pressure bladder 7 and treatment storehouse 1 join by flexible pipe 8,9 and gas-pressure component respectively.Automatically controlled part 10 is contained in control and controls on the platform, can realize various air pressure treatments by each selector switch 11 and button 12.

Pressure bladder 7 connect structure as shown in Figure 2: ring skeleton 71 is welded by two annular slabs 72 and four support bars 73, and air bag 7 is bonded as one with skeleton 71.When gas entered air bag by air inlet pipe 74, air bag can only compress bulkhead and trouble limb 14 to inside and outside expansion, reaches sealing purpose.In the treatment bulkhead, also be provided with air bag location-plate 13.

The baric systerm of this device is as shown in Figure 3: treatment storehouse 1 is connected in series successively with solenoid directional control valve F1, F2, vacuum pump 15, solenoid directional control valve F3, F4, pressure bladder 7.Wherein the QI KOU 2 of valve F1 connects oxygen cylinder 17; The QI KOU 3 of valve F2 and the QI KOU 2 of valve F3 communicate with atmosphere; The QI KOU 3 of valve F4 communicates with the QI KOU 3 of valve F1, forms an inflation branch road 16.The original state of (during outage) was 1,3 QI KOU and communicates when above-mentioned each valve F1～F4 was failure to actuate.During treatment, trouble limb 14 passes pressure bladder 7 and stretches in the treatment storehouse 1, makes valve F4 action simultaneously, and its QI KOU 1,2 is logical, and air enters vacuum pump 15 through the QI KOU 3,1 of valve F2, enters air bag through the QI KOU 1,3 of valve F3 and the QI KOU 1,2 of valve F4 again.Original state is returned in valve F4 outage behind the gas-flow closure, and its QI KOU 1,3 is logical, and air enters treatment storehouse 1 through the QI KOU 3,1 of inflation branch road 16, valve F1, realizes positive pressure therapy.If make valve F2, F3 action behind the airbag aeration, then their QI KOU 1,2 is logical, and 1,3 is disconnected, and gas is taken away by vacuum pump 15 through the QI KOU 2,1 of the QI KOU 1,3 of valve F1 and valve F2 in the treatment storehouse, is discharged the realization negative pressure treatment by the QI KOU 3 of valve F3.Airflow direction during malleation is shown in solid arrow among the figure, and the airflow direction during negative pressure (bleeding) as shown in phantom in FIG..If valve F2, F3 periodically commutate, can realize the positive and negative pressure alternating treatment.As valve F1 action, its gas outlet 1,2 is logical, realizes hyperbaric oxygentherapy.The state of above-mentioned each valve can adopt manual control.

Sometimes, when doing the air pressure treatment, the intermittent time in the time of need carrying out pressurize and positive negative pressure is set replacing, can adopt common delay circuit and pressure limiting circuit to control opening and closing and the termination of pumping time of vacuum pump this moment, and its control principle as shown in Figure 4.The air pressure that pressure transducer 20 will be treated in the storehouse converts the signal of telecommunication to, sends into malleation, voltage comparator 22 or negative pressure voltage comparator 23 through permutator 21, and the reference voltage of comparator 22,23 is corresponding with the atmospheric pressure value of being scheduled to.After pick off 20 and malleation voltage comparator 22 were connected, when signal voltage was lower than reference voltage, comparator 22 was output as high potential, vacuum pump switch 24 closures, and vacuum pump 7 starts inflation; After arriving predetermined pressure, comparator 22 is output as electronegative potential, and vacuum pump is closed, thereby can realize malleation pressurize treatment.Negative pressure pressurize principle is identical with malleation.If delay circuit 25,26 is set between comparator 22,23, the termination of pumping time between promptly the positive and negative pressure of may command replaces.Its principle is: when malleation reached predetermined value, comparator 22 was output as electronegative potential, and vacuum pump stops.Simultaneously, delay circuit 25 work after the time-delay are connected comparator 23 circuit, and system enters negative pressure state.So circulation realizes that positive negative pressure alternately.

Positive-pressure control circuit as shown in Figure 5.Comparator 22 is operational amplifiers, is imported by a end from the analog voltage signal of pick off 20, and its other end is a reference voltage.Relay CJ2 controls vacuum pump switch.When treatment storehouse air pressure was lower than predetermined value, comparator 22 had output, audion G1 conducting, and relay CJ2 energising starts the vacuum pump inflation; When air pressure reached predetermined value, comparator was output as zero, and relay CJ2 outage vacuum pump stops.The negative pressure control circuit is identical therewith.Number among the figure: K3-just compresses switch merely, the positive negative pressure alternation switch of K4-, and the positive negative pressure of A-replaces starting switch, tJ1-negative pressure delay circuit relay normally open contact.

The malleation delay circuit is shown in body 6.This circuit is made up of unijunction transistor G2, controllable silicon G3 and relay tJ2.The negative pressure delay circuit is identical therewith.The auxiliary reclay normally open contact of the positive negative pressure conversion of SJ2-among the figure.

Fig. 7 has provided reversal valve control circuit and positive and negative voltage conversion circuit.Number among the figure: K1-airbag aeration switch, the simple negative pressure switch of K2-, K3-just compresses switch merely, the positive negative pressure alternation switch of K4-, K5-hyperbaric oxygen switch, the coil of F1J, F2J, F3J, F4J-valve F1, F2, F3, F4.Circuit relay tJ1, tJ2 cooperated when two auxiliary reclay SJ1, SJ2 were with positive and negative pressure-controlled circuit relay CJ1, CJ2, positive and negative calendering among the figure, when realizing positive and negative calendering alternately.Above-mentioned K switch 1～K4 is key switch.

The utility model is owing to adopted the air bag of embedded skeleton, so good sealing effect, the pressure that air bag can not treated the storehouse changes and is out of shape, and therefore can keep certain pressure, and suffering from limb sealing place can not affect because pressure is excessive blood circulation. Another advantage of the present utility model is only to adopt a vavuum pump can realize the multiple treatment functions such as positive/negative-pressure.

Claims (3)

1, the therapy equipment of limbs positive and negative air-pressure, comprise the treatment storehouse, air pump, air valve and automatically controlled part, porch in the treatment storehouse is provided with sealing member, it is characterized in that said pump is a vacuum pump 15, said sealing member is an annular air-pocket 7, air bag 7 embedded ring skeletons 71, said air valve is four three-way solenoid valve F1～F4, above-mentioned treatment storehouse 1, valve F1, valve F2, vacuum pump 15, valve F3, valve F4 and air bag 7 are connected in series according to this, wherein another QI KOU of valve F1 connects hyperbaric oxygen source of the gas 17, valve F2, another QI KOU of F3 is a drain, another QI KOU of valve F4 and valve F1, gas circuit between F2 is joined, and forms an inflation branch road 16.

2, therapy equipment as claimed in claim 1 is characterized in that air bag 7 and skeleton 71 are bonded as one.

3, therapy equipment as claimed in claim 2 is characterized in that ring skeleton 71 is welded by annular slab 72 and support bar 73.

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