Liquid external medicine scalp applying device

Abstract

The scalp applicator comprises a shell, a storage battery, an applying head, a movable cover, an air compressor, an electromagnetic valve and a pressure switch, a detection circuit is also provided; a liquid adding opening is formed in the upper end of the shell, the movable cover and the liquid adding opening are connected together, an air adding opening is formed in the upper end of the movable cover, the air storage tank exhaust end of the air compressor is connected with one end of the electromagnetic valve, and a connecting pipe is installed at the other end of the exhaust valve and connected with the air adding opening through a hose. The exterior of the upper end of the connecting pipe and an air inlet pipe of the pressure switch are mounted together; a plurality of holes are transversely distributed in the lower end of the shell at intervals, the upper ends of liquid outlet pipes of the multiple sets of medicine feeding heads are installed in the holes in the lower end of the shell respectively. The storage battery, the detection circuit and the compressor are installed in the shell and electrically connected. Liquid in the shell can be smeared on the scalp of a patient through the contact ball rotating along the liquid outlet hole under a certain pressure, a better medicine applying effect can be achieved relatively, and the probability that the liquid outlet hole is blocked is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical auxiliary equipment, in particular to a scalp applicator for liquid external medicine. Background Art

[0002] In clinical medicine, some patients suffer from related diseases on their heads (such as seborrheic dermatitis, scalp psoriasis, androgenic alopecia, alopecia areata, etc.), and medical staff will apply medicine to the relevant parts of the scalp for the patients through a medicine applicator. The existing medicine applicator structure generally includes a shell and a medicine applicator head, and multiple medicine applicators are distributed at the lower end of the shell. When applying the medicine, the medical staff will contact the medicine applicator head with the relevant part of the patient's scalp and slightly press down the medicine applicator head with their hands, so that the liquid medicine in the shell will flow out and be applied to the relevant part of the patient's scalp.

[0003] Although the existing medicine applicators have met the actual needs to a certain extent, they still have certain application defects due to structural limitations. Specifically, since the liquid outlet hole at the lower end of the medicine applicator is relatively small (the liquid outlet hole cannot be too large, otherwise it will cause excessive liquid discharge), and the liquid medicine has a certain viscosity and the liquid in the shell is pressureless, it is very likely that the liquid medicine will be clogged after adhering to and drying the inner side of the liquid outlet hole after a period of time. In this way, the subsequent inability to properly flow out the liquid will have an adverse effect on the normal drug application. In summary, it is particularly necessary to provide a medicine applicator that can minimize the probability of blockage and achieve better drug application effects. Utility Model Content

[0004] In order to overcome the drawbacks of existing medicine applicators as described in the background due to structural limitations, the utility model provides a scalp medicine applicator for liquid external medicine, which can inject appropriate pressure into the shell under the joint action of relevant mechanisms, so that the liquid medicine in the shell can subsequently flow out from the medicine applicator head more effectively and be applied to the patient's head skin with the rotating contact ball, thereby achieving relatively better medicine application effect and reducing the probability of blockage of the liquid outlet.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A scalp applicator for liquid topical medicine, comprising a shell, a battery, an applicator head, a movable cover, an air compressor, a solenoid valve, and a pressure switch; characterized in that it also has a detection circuit; the upper end of the shell has a liquid filling port, the movable cover and the liquid filling port are connected together through threads, the upper end of the movable cover has a gas filling port, the exhaust end of the air tank of the air compressor is connected to one end of the solenoid valve, the other end of the solenoid valve is equipped with a connecting pipe, the connecting pipe and the gas filling port are connected through a hose; the upper end of the connecting pipe is installed together with the air inlet pipe of the pressure switch; the lower end of the shell There are multiple openings distributed at laterally spaced intervals, and there are multiple sets of upper medicine heads, each set of upper medicine heads includes a liquid outlet pipe, a spring, and a contact ball. The upper end of the liquid outlet pipe has a liquid inlet hole, and the lower end has a liquid outlet hole. The contact ball and the spring are respectively located at the upper and lower ends of the liquid outlet pipe, and the upper ends of the liquid outlet pipes of the multiple sets of upper medicine heads are respectively installed in the multiple openings at the lower end of the shell; the battery, the detection circuit, and the compressor are installed in the shell; the two wiring terminals of the pressure switch are electrically connected in series between the two signal input terminals of the detection circuit, and the power output terminal of the detection circuit is electrically connected to the power input terminal of the solenoid valve.

[0007] Furthermore, the shell is made of transparent material, and the solenoid valve is a normally closed valve core solenoid valve.

[0008] Furthermore, the contact ball, spring and liquid outlet pipe are made of stainless steel.

[0009] Furthermore, the lower ends of the contact balls of the multiple sets of drug heads have the same height, the outer diameter of the contact ball at half the height is larger than the inner diameter of the liquid outlet hole, and the outer diameter below and above the half the height is smaller than the inner diameter of the liquid outlet hole.

[0010] Furthermore, the detection circuit includes an electrically connected resistor, a transistor and a relay, the negative power input terminal of the relay is connected to the collector of the transistor, one end of the resistor is connected to the base of the transistor, and the positive power input terminal of the relay is connected to the control power input terminal.

[0011] Compared with the prior art, the utility model has the following beneficial effects: before using the utility model, the staff opens the movable cover to add the corresponding drug liquid (such as minoxidil for treating alopecia areata) into the shell. Under the joint action of the pressure switch and the detection circuit, when the pressure in the shell is lower than a certain level, the compressed air in the air tank of the air compressor will enter the shell, so that there is always compressed air with a certain pressure in the shell. When the medical staff holds the shell and presses down the contact ball, the liquid in the shell can be applied to the patient's scalp under a certain pressure through the contact ball rotating along the liquid outlet. Since there is a suitable pressure in the shell, the liquid medicine in the shell can flow out from the medicine applying head more effectively and be applied to the patient's head skin, which can relatively achieve a better medicine application effect and reduce the probability of blockage of the liquid outlet. Based on the above, the utility model has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the overall structure and the partially enlarged structure of the utility model.

[0014] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0015] Figure 1 , 2 As shown in, a scalp applicator for liquid external medicine comprises a shell 1, a battery G1, a charging socket CZ1, a power switch S1, a medicine applicator 2, a movable cover 3, a small air compressor 4, a solenoid valve M, and a pressure switch K1; it also has a detection circuit 5; the shell 1 is a hollow structure, the outer side of the upper end of the shell has a liquid filling port 101, the side end of the liquid filling port 101 has an external thread, the lower end of the movable cover 3 has an external thread, the movable cover 3 and the liquid filling port 101 are connected together by threads, and a gas filling port 102 that communicates with the inside of the movable cover 3 is welded to the outside of the middle part of the upper end of the movable cover 3, the exhaust end of the gas tank of the air compressor 4 and one end of the solenoid valve M are connected by threads, and a connecting pipe 103 is installed at the other end of the solenoid valve M, and the connecting pipe 103 and the gas filling port 102 are connected by a hose 6 with a certain strength; the middle of the upper end of the connecting pipe 103 A branch pipe is welded to the outside of the shell 1 and is interconnected with the inside of the shell, and the upper end of the branch pipe is welded to the air inlet pipe of the pressure switch K1; a plurality of openings 104 are distributed at a certain distance laterally at the lower end of the shell 1, and there are multiple sets of upper medicine heads 2, each set of upper medicine heads 2 includes a liquid outlet pipe 21, a spring 22, and a contact ball 23. The middle part of the upper end of the liquid outlet pipe 21 has a liquid inlet hole 211, and the lower end of the liquid outlet pipe 21 has a concave arc-shaped liquid outlet hole 212 (consistent with the outer curvature of the contact ball), the contact ball 23 and the spring 22 are respectively located at the upper and lower ends of the liquid outlet pipe 21, and the contact ball 23 is located at the upper end of the liquid outlet hole 212, and the outer sides of the upper ends of the liquid outlet pipes 21 of the multiple sets of upper medicine heads 2 are respectively heated and sealed and installed in the multiple openings 104 at the lower end of the shell; the battery G1, the charging socket CZ1, the power switch S1, and the detection circuit 5 are installed on the circuit board, and are installed in the shell 7 with the compressor.

[0016] Figure 1 , 2As shown in , the housing 1 is made of transparent material, and the solenoid valve M is a normally closed valve core solenoid valve. The contact ball 23, the spring 22, and the liquid outlet pipe 21 are made of stainless steel. The lower ends of the contact balls 23 of the multiple sets of medicine heads are of the same height. The outer diameter of the contact ball 23 at half the height is larger than the inner diameter of the liquid outlet hole 212, and the outer diameter below and above the half height is smaller than the inner diameter of the liquid outlet hole 212. The detection circuit includes a resistor R1, a transistor Q1, and a relay J1 connected via circuit board wiring. The negative power input terminal of the relay J1 is connected to the collector of the transistor Q1, one end of the resistor R1 is connected to the base of the transistor Q1, and the positive power input terminal of the relay J1 is connected to the control power input terminal. The two poles of the battery G1 and the two ends of the charging socket CZ1 (the external power charger plug is inserted into the charging socket to charge the battery) and the power input end of the air compressor 4 are connected via wires, and are connected in series with the power input end of the detection circuit through the power switch S1, and the positive power input end of the relay J1 and the emitter of the transistor Q1 are connected via wires. The two terminals of the pressure switch K1 are connected in series between the two signal input ends of the detection circuit, the positive power input end of the relay J1 and the other end of the resistor R1.

[0017] Figure 1 , 2As shown, before using the new device, open the movable cover 3 to add the corresponding drug liquid (such as minoxidil for treating alopecia areata) into the shell, and then screw the movable cover. After adding, turn on the power switch S1, the detection circuit is powered on and starts working. When the pressure in the shell is lower than a certain level (such as less than 0.02Mpa), the internal contacts of the pressure switch K1 will close. In this way, the 12V DC power supply output by the battery G1 will enter the base of the transistor Q1 through the pressure switch K1 and the resistor R1 for voltage reduction and current limiting. The transistor Q1 conducts and the collector outputs a low level and enters the negative power input terminal of the relay J1. The relay J1 is powered on and its control power input terminal and the normally open contact terminal are closed. Then, the solenoid valve M1 is powered on and the valve core is opened, and the compressed air in the air compressor tank enters the shell, causing the pressure in the shell to increase. When the pressure in the shell is higher than a certain level (for example, greater than 0.02Mpa), the internal contacts of the pressure switch K1 will open. In this way, the 12V DC power supply output by the battery G1 no longer enters the base of the transistor Q1 through the pressure switch K1 and the resistor R1 for voltage reduction and current limiting. The transistor Q1 cuts off the collector and stops outputting a low level to enter the negative power input terminal of the relay J1. When the relay J1 loses power, it no longer attracts its control power input terminal and the normally open contact terminal, and then the solenoid valve M1 loses power and the valve core is closed, and the compressed air in the air tank of the air compressor no longer enters the shell. Through the above-mentioned new type, the shell can always be kept at a certain pressure. When the medical staff holds the shell 1 without pressing down the contact ball 23, the elastic force of the spring 22 makes the lower end of the contact ball 23 closely contact the liquid outlet hole 212 at the lower end of the liquid outlet tube 21 and seals the liquid outlet hole 212, so that the liquid in the shell will not flow out; when the medical staff holds the shell 1 and presses down the contact ball 23, the contact ball 23 overcomes the downward elastic force of the spring 22 to make the contact ball 23 move upward, and the lower end of the contact ball no longer closely contacts the liquid outlet hole 212 at the lower end of the liquid outlet tube 21, and the liquid outlet hole 212 is not sealed, so that the liquid in the shell will flow out, and the rotating contact ball 23 acts on the scalp. Since there is a suitable pressure in the shell 1, the liquid medicine in the shell 1 can more effectively flow out from the medicine application head and be applied to the patient's head skin, which can relatively achieve a better medicine application effect and reduce the probability of clogging of the liquid outlet hole. Figure 2 As shown, the battery G1 is a 12V / 20Ah lithium battery; the resistance of the resistor R1 is 47K; the transistor Q1 is a 9013 NPN transistor; the relay J1 model is DC12V; the pressure switch K1 is an adjustable normally open contact pressure switch; and the air compressor is a finished small air compressor with a power of 80W.

[0018] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0019] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A scalp applicator for liquid external medicine, comprising a housing, a battery, an applicator head, a movable cover, an air compressor, a solenoid valve, and a pressure switch; characterized in that: It also has a detection circuit; the upper end of the shell is provided with a liquid filling port, the movable cover and the liquid filling port are connected together through threads, the upper end of the movable cover is provided with a gas filling port, the exhaust end of the air tank of the air compressor is connected to one end of the solenoid valve, and the other end of the solenoid valve is provided with a connecting pipe, and the connecting pipe and the gas filling port are connected through a hose; the upper end of the connecting pipe is installed together with the air inlet pipe of the pressure switch; the lower end of the shell is provided with a plurality of openings at a horizontal interval, and there are multiple sets of upper medicine heads, each set of upper medicine heads includes a liquid outlet pipe, a spring, and a contact ball, the upper end of the liquid outlet pipe has a liquid inlet hole and the lower end has a liquid outlet hole, the contact ball and the spring are respectively located at the upper and lower ends of the liquid outlet pipe, and the upper ends of the liquid outlet pipes of the multiple sets of upper medicine heads are respectively installed in the multiple openings at the lower end of the shell; the battery, the detection circuit, and the compressor are installed in the shell; the two wiring terminals of the pressure switch are electrically connected in series between the two signal input terminals of the detection circuit, and the power output terminal of the detection circuit is electrically connected to the power input terminal of the solenoid valve.

2. A liquid external medicine scalp applicator according to claim 1, characterized in that: The shell is made of transparent material and the solenoid valve is a normally closed valve core solenoid valve.

3. A liquid external medicine scalp applicator according to claim 1, characterized in that: The contact ball, spring and liquid outlet pipe are made of stainless steel.

4. A liquid external medicine scalp applicator according to claim 1, characterized in that: The lower ends of the contact balls of the multiple sets of drug loading heads have the same height. The outer diameter of the contact ball at the half height position is larger than the inner diameter of the liquid outlet hole, and the outer diameter below and above the half height position is smaller than the inner diameter of the liquid outlet hole.

5. The liquid external medicine scalp applicator according to claim 1, characterized in that: The detection circuit includes an electrically connected resistor, a transistor and a relay, wherein the negative power input terminal of the relay is connected to the collector of the transistor, one end of the resistor is connected to the base of the transistor, and the positive power input terminal of the relay is connected to the control power input terminal.

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