Medicine applying device

Abstract

The medicine applying device comprises a shell, a liquid medicine bottle, a pumping assembly, a driving assembly and a micro-needle assembly, the liquid medicine bottle, the pumping assembly, the driving assembly and the micro-needle assembly are arranged on the shell, the liquid medicine bottle is communicated with the pumping assembly through a liquid inlet flow channel, and the pumping assembly is communicated with the micro-needle assembly through a liquid outlet flow channel so that liquid extracted from the liquid medicine bottle can be conveyed to the micro-needle assembly; the driving assembly is in transmission connection with the microneedle assembly and used for driving the microneedle assembly to do reciprocating needling motion. Needling and medicine applying operation can be completed with one hand, the operation process is simplified, the operation threshold is lowered, meanwhile, the liquid pollution risk and waste are reduced, and the consumable cost is reduced; in addition, acupuncture and medicine applying are conducted synchronously, and the problem that the leading-in effect becomes poor due to the fact that a skin minimally invasive channel is closed rapidly can be solved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a drug delivery device. Background Technology

[0002] Microneedling technology has been widely used in skin care, aesthetic medicine, and transdermal drug delivery because it creates micro-invasive channels on the skin surface through tiny needles, promoting the transdermal absorption of active ingredients or drugs. Currently, most electric microneedling products on the market are single-function designs, only capable of microneedling. Users must hold the microneedling device in one hand to perform the needling operation, while the other hand must pre-draw the liquid (such as active ingredients or therapeutic drugs) from a vial or other container into a syringe, or apply it to a cotton swab or skin surface, before using the microneedle to deliver the ingredient. This method requires the coordinated use of both hands, increasing the complexity of the operation, extending the time cost of a single treatment, and resulting in poor operational continuity, making it impossible to simultaneously perform needling and drug application. Secondly, when dealing with skin areas covered by hair or other obstacles, such as applying medication to the scalp, it is necessary to use one hand to operate the instrument and the other hand to part the hair to apply the medication, making the current two-handed operation mode difficult to implement. Furthermore, the liquid needs to be transferred from the vial to the skin surface through intermediate carriers such as syringes and cotton swabs. During the process of changing containers multiple times, the liquid is prone to contact with the external environment, the operator's hands, or non-sterile carriers, which can easily lead to contamination of the liquid.

[0003] Therefore, there is an urgent need for a medicine application device that can integrate acupuncture and medicine application functions, simplify the operation process, and reduce the risk of contamination. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a medicine applicator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides a drug delivery device, including a housing and a liquid medicine bottle, a pumping assembly, a driving assembly, and a microneedle assembly disposed on the housing. The liquid medicine bottle is connected to the pumping assembly through a liquid inlet channel, and the pumping assembly is connected to the microneedle assembly through a liquid outlet channel to deliver liquid drawn from the liquid medicine bottle to the microneedle assembly. The driving assembly is driven to the microneedle assembly to drive the microneedle assembly to perform reciprocating acupuncture motion.

[0006] Furthermore, the pumping assembly includes a pump body and a pump hose, the pump hose being connected in series between the inlet channel and the outlet channel, and the pump body extracting and transporting liquid by squeezing the pump hose.

[0007] Furthermore, it also includes an inlet pipe and an outlet pipe, the inlet pipe forming the liquid inlet channel and the outlet pipe forming the liquid outlet channel, and the inlet pipe and the outlet pipe are connected by the pump hose.

[0008] Furthermore, the driving component includes a power source and a transmission structure. The transmission structure includes a cam and an elastic element. The power source drives the cam to rotate, and the cam drives the microneedle assembly to reciprocate through the elastic element.

[0009] Furthermore, the drive assembly also includes a hollow tubular transfer element, one end of which is connected to the liquid outlet channel and the other end of which is connected to the internal channel of the microneedle assembly.

[0010] Furthermore, the microneedle assembly includes a microneedle body, the microneedle body having a hollow channel inside, and the tip of the microneedle body having a first liquid outlet hole, the first liquid outlet hole being connected to the hollow channel.

[0011] Furthermore, the tip of the microneedle body is an array of microneedles, and a second liquid outlet is provided around the tip of the microneedle body, which is connected to the hollow channel.

[0012] Furthermore, a battery is installed inside the housing.

[0013] The beneficial effects of this invention compared with the prior art are as follows: A medicine applicator includes a housing and a liquid medicine bottle, a pumping component, a driving component, and a microneedle component disposed on the housing. The liquid medicine bottle and the pumping component are connected through an inlet channel, and the pumping component and the microneedle component are connected through an outlet channel to transport the liquid drawn from the liquid medicine bottle to the microneedle component. The driving component is connected to the microneedle component for driving the microneedle component to perform reciprocating acupuncture motion. By integrating the liquid medicine bottle, pumping component, driving component, and microneedle component into the housing, the acupuncture and medication application functions are integrated into one unit. This eliminates the need for separate hand operations for acupuncture and liquid application; all operations can be completed with one hand. Especially when applying medication to the scalp, one hand can operate the instrument while the other hand can part the hair to apply the medication. This not only simplifies the operation process and lowers the operational threshold but also easily adapts to usage scenarios with obstacles such as hair-covered areas, broadening the product's applicability. Simultaneously, the liquid medicine bottle connects directly to the device, eliminating the need for intermediate carriers such as syringes and cotton swabs to transfer the liquid, reducing the risk of liquid contamination and waste, and lowering consumable costs. Furthermore, simultaneous acupuncture and medication application avoids the problem of reduced delivery effectiveness caused by rapid closure of the micro-invasive skin channels.

[0014] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objectives, features and advantages of the present invention more obvious and understandable, preferred embodiments are described in detail below. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a medicine applicator provided in a specific embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of a medicine applicator provided in a specific embodiment of the present invention; Figure 3 A schematic diagram of the internal structure of a medicine applicator provided in a specific embodiment of the present invention; Figure 4 A schematic diagram of the structure of the driving component provided in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the microneedle body provided in a specific embodiment of the present invention.

[0017] Figure Labels 1. Housing; 11. Placement slot; 111. Sealing connector; 2. Liquid medicine bottle; 3. Microneedle assembly; 31. Microneedle body; 311. Needle tip; 3111. First liquid outlet; 312. Second liquid outlet; 4. Pumping assembly; 5. Drive assembly; 51. Power source; 52. Cam; 53. Elastic element; 54. Transfer element; 6. Battery. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] like Figures 1 to 4 As shown, this embodiment of the invention provides a drug delivery device, including a housing 1 and a liquid medicine bottle 2, a pumping assembly 4, a driving assembly 5, and a microneedle assembly 3 disposed on the housing 1. The liquid medicine bottle 2 serves as a liquid storage component, used to hold the liquid to be introduced into the skin (such as medical aesthetic active ingredient liquid, medical transdermal drugs, etc.). It is connected to the pumping assembly 4 through a liquid inlet channel, which can be a medical-grade flexible tube or rigid pipe structure to ensure the sealing of the liquid delivery process. The pumping assembly 4 can be a water pump or a peristaltic pump, providing power for liquid delivery. The driving assembly 5 is connected to the microneedle assembly 3, driving the microneedle assembly 3 to perform reciprocating acupuncture motion. It should be noted that the liquid delivery of the pumping component 4 and the driving component 5 to drive the microneedle component 3 can be achieved by setting a controller. That is, the controller is used to achieve synchronous control of the pumping component 4 and the driving component 5, so as to ensure that the liquid delivery action of the pumping component 4 and the needle piercing action of the microneedle component 3 are synchronized.

[0025] In actual operation, after the device is started, the drive component 5 synchronously drives the pumping component 4 to draw liquid from the liquid medicine bottle 2. The liquid is transported to the microneedle component 3 through the liquid outlet channel. At the same time, the microneedle component 3 moves back and forth towards the skin under the drive component 5 to form a minimally invasive channel. The liquid is simultaneously applied to the skin through the microneedle component 3, realizing the integrated operation of acupuncture and medication.

[0026] By integrating the liquid medicine bottle 2, pumping component 4, driving component 5, and microneedle component 3 into the housing 1, the acupuncture and medication application functions are integrated into one. This eliminates the need for separate two-handed operation of acupuncture and liquid application; all operations can be completed with one hand. This not only simplifies the operation process and lowers the operational threshold but also easily adapts to usage scenarios with obstacles such as hair-covered areas, broadening the product's applicability. Simultaneously, the liquid medicine bottle 2 connects directly to the device, eliminating the need for liquid transfer via intermediate carriers such as syringes or cotton swabs, reducing the risk of liquid contamination and waste, and lowering consumable costs. Furthermore, simultaneous acupuncture and medication application avoids the problem of reduced delivery effectiveness caused by rapid closure of the skin's micro-invasive channels.

[0027] In some embodiments, the pumping assembly 4 is a peristaltic pump, comprising a pump body and a pump hose. The pump hose is connected in series between the inlet channel and the outlet channel, serving as an intermediate channel for liquid transport. When the pump body is operating, it continuously squeezes the pump hose, creating a negative pressure inside the hose. This draws the liquid from the medicine bottle 2 into the pump hose from the inlet channel, and simultaneously, through a squeezing and pushing action, transports the liquid from the pump hose to the outlet channel. Because the liquid only flows inside the pump hose and does not directly contact the pump body's rotor, rollers, or other mechanical parts, it effectively avoids contamination of the liquid by impurities caused by wear of pump body components, while also reducing the corrosive effect of the liquid on the pump body components.

[0028] By using a peristaltic pump to achieve non-contact liquid delivery, the cleanliness of the liquid is ensured, meeting the sterility requirements of liquids in the medical and aesthetic fields.

[0029] exist Figure 3 In the illustrated embodiment, the medication applicator further includes an inlet pipe and an outlet pipe. The inlet pipe forms an inlet flow channel, and the outlet pipe forms an outlet flow channel. The inlet and outlet pipes are connected via a pump hose. Both the inlet and outlet pipes are made of medical-grade rigid plastic or silicone tubing, with their inner diameters matching the inner diameter of the pump hose to ensure smooth liquid flow. The connections between the inlet and outlet pipes and the pump hose can be made using detachable sealing joints. Specifically, these detachable sealing joints can be compression fittings, threaded fittings, or quick-connect fittings, allowing for quick assembly and disassembly of the inlet and outlet pipes while ensuring a tight seal at the connection points to prevent liquid leakage.

[0030] The inclusion of inlet and outlet pipes makes it easier to replace pump hoses, facilitating equipment cleaning and maintenance.

[0031] In some embodiments, the liquid medicine bottle 2 can be disposed inside or outside the housing 1. When disposed inside, it is installed and fixed by an internal support structure, snap-fit ​​structure or fastening structure. When disposed outside, it is installed and fixed by an externally disposed groove, sealed or semi-sealed chamber.

[0032] exist Figure 2In the illustrated embodiment, a placement groove 11 is provided on the housing 1 corresponding to the installation position of the liquid medicine bottle 2. The shape of the placement groove 11 is adapted to the shape of the liquid medicine bottle 2 to ensure that the liquid medicine bottle 2 is stable and does not shake after placement. A sealing connector 111 is provided on the side of the placement groove 11. The sealing connector 111 has a channel communicating with the liquid inlet channel inside, and a sealing rubber ring or soft sealing gasket is provided on the outside. The bottle mouth of the liquid medicine bottle 2 has an interface adapted to the sealing connector 111. When the liquid medicine bottle 2 is placed in the placement groove 11, the bottle mouth and the sealing connector 111 are connected, and the sealing rubber ring or soft sealing gasket is squeezed and deformed, realizing the sealing connection between the liquid medicine bottle 2 and the sealing connector 111, thereby enabling the interior of the liquid medicine bottle 2 to communicate with the liquid inlet channel. The sealing connector 111 can be made of an elastic material, and the elastic deformation of the material can be used to further improve the sealing effect and prevent liquid leakage or air ingress that could lead to liquid contamination.

[0033] The sealing connection structure between the liquid medicine bottle 2 and the equipment is simple and reliable, requiring no additional sealing operations. Users can quickly complete the installation and replacement of the liquid medicine bottle 2. The sealing design effectively avoids liquid leakage and contamination, ensuring safety and liquid cleanliness.

[0034] In some embodiments, to ensure that the liquid in the liquid medicine bottle 2 can be fully extracted and to avoid residue, the part of the placement groove 11 that contacts the outer surface of the liquid medicine bottle 2 is inclined, so that the liquid medicine bottle 2 can be placed at an angle in the placement groove 11.

[0035] Specifically, the bottom of the placement tank 11 is inclined, with the inclination direction facing the sealing connector 111. That is, after the liquid medicine bottle 2 is placed, its mouth is lower than the bottom, causing the liquid in the liquid medicine bottle 2 to converge towards the mouth under the action of gravity, making it easier for the pumping component 4 to completely extract the liquid. The inclination angle of the placement tank 11 can be designed according to the capacity and shape of the liquid medicine bottle 2 to ensure the liquid convergence effect without affecting the stability of the placement of the liquid medicine bottle 2.

[0036] The tilted placement structure can minimize liquid residue in the liquid medicine bottle 2, improve liquid utilization, and avoid waste; no additional liquid guiding structure is required, which simplifies the design of the placement tank 11 and reduces manufacturing costs.

[0037] exist Figure 4In the illustrated embodiment, the drive assembly 5 includes a power source 51 and a transmission structure. The power source 51 is a micro motor, which is fixedly installed inside the housing 1, and its output shaft is connected to the transmission structure. The transmission structure includes a cam 52 and an elastic element 53. The cam 52 is fixedly installed on the output shaft of the micro motor, and the elastic element 53 is a spring, with one end abutting against the cam 52 and the other end connected to the microneedle assembly 3. When the micro motor starts, the output shaft drives the cam 52 to rotate. During rotation, the eccentric structure of the cam 52 continuously compresses the elastic element 53, causing the elastic element 53 to undergo expansion and contraction deformation, thereby driving the microneedle assembly 3 to reciprocate along the axial direction to achieve the needle puncture action. Simultaneously, the pumping assembly 4 is controlled by the controller to extract and transport liquid.

[0038] By synchronously driving the needle-piercing action and the liquid delivery action with a single power source 51, the structure of the drive component 5 is simplified, and the size of the equipment and manufacturing cost are reduced. The transmission structure of the cam 52 and the elastic element 53 ensures that the reciprocating motion of the micro-needle component 3 is stable and reliable, and the needle-piercing depth is uniform.

[0039] exist Figure 4 In the embodiment shown, the driving component 5 also includes a hollow tubular transfer element 54. One end of the transfer element 54 is connected to the liquid outlet channel. The transfer element 54 is made of medical-grade rigid tubing or silicone tubing. One end of the transfer element 54 is sealed and connected to the water outlet pipe, and the other end is sealed and connected to the internal flow channel of the microneedle component 3. The liquid delivered by the pumping component 4 enters the transfer element 54 through the liquid outlet channel, and is then guided by the transfer element 54 to the internal flow channel of the microneedle component 3, and finally acts on the skin.

[0040] The placement of the transfer component 54 allows for spatial avoidance between liquid transport and power transmission, making the internal structure layout of the equipment more reasonable while ensuring smooth liquid transport.

[0041] exist Figure 4 In the illustrated embodiment, the microneedle assembly 3 includes a microneedle body 31, which is made of medical-grade stainless steel, titanium alloy, or biocompatible polymer material to ensure safety upon skin contact. The microneedle body 31 has a hollow channel internally, which communicates with the channel of the transfer component 54 to receive liquid delivered by the pumping assembly 4. The needle tip 311 of the microneedle body 31 has a first liquid outlet 3111, which communicates with the hollow channel. Liquid flows out through the hollow channel from the first liquid outlet 3111, directly acting on the micro-invasive channel in the skin. The needle tip 311 can be conical or pyramidal in shape to facilitate puncturing the skin and forming a micro-channel. The number of first liquid outlets 3111 can be set to one or more as needed, evenly distributed on the end face or side face of the needle tip 311.

[0042] The hollow channel and liquid outlet design enable precise liquid delivery, allowing the liquid to directly enter the minimally invasive channel and improve the efficiency of liquid introduction.

[0043] In some embodiments, to further improve the liquid coverage and delivery effect, the tip 311 of the microneedle body 31 is designed as an array-type microneedle structure, i.e., multiple tiny needles are distributed in an array to form a dense acupuncture area. Simultaneously, a second liquid outlet 312 is added around the tip 311 of the microneedle body 31, and the second liquid outlet 312 is also connected to the hollow channel. During liquid delivery, a portion of the liquid flows out from the first liquid outlet 3111 and directly enters the minimally invasive channel formed by the acupuncture; another portion of the liquid flows out from the second liquid outlet 312, covering the entire array-type acupuncture area, ensuring that each minimally invasive channel is in contact with the liquid.

[0044] It should be noted that in practical applications, if the first liquid outlet 3111 can meet the requirements, there is no need to set a second liquid outlet 31.

[0045] The array-type microneedle structure can increase the number of micro-invasive channels in the skin and expand the delivery area; the combined design of the first liquid outlet 3111 and the second liquid outlet 312 makes the liquid coverage more uniform, further improving the delivery effect and avoiding the problem of insufficient liquid in local areas.

[0046] exist Figure 4 In the illustrated embodiment, the housing 1 is made of lightweight, high-strength materials, such as ABS plastic or aluminum alloy, and its shape is ergonomically designed for easy one-handed operation. A battery 6, either a rechargeable or disposable lithium battery, is installed inside the housing 1 in a battery compartment. The battery compartment has a sealing cover for easy battery replacement or charging. The battery 6 is electrically connected to the drive assembly 5 and the pumping assembly 4 via wires, providing them with operating power. A control switch is located on the outer surface of the housing 1, electrically connected to the battery 6, drive assembly 5, and pumping assembly 4, and used to control the start and stop of the equipment.

[0047] By incorporating a built-in battery, the device is freed from the constraints of a power cord, enhancing portability and enabling its use in various scenarios.

[0048] In some embodiments, the placement groove 11 is located at the top of the housing 1 and the microneedle assembly 3 is located at the bottom of the housing 1. This forms a natural gravity-assisted delivery path from top to bottom. Under the action of gravity, the liquid converges towards the microneedle assembly 3 at the bottom of the housing 1. Combined with the suction power of the peristaltic pump, the liquid delivery resistance can be significantly reduced, avoiding negative pressure idling or liquid stagnation in the pipeline and improving delivery stability. Furthermore, the liquid medicine bottle 2 placed at the top with an incline allows the liquid to continuously converge towards the bottle opening under the action of gravity, minimizing liquid residue in the bottle and solving the problem of difficulty in completely extracting the liquid when placed horizontally or at the bottom, thus improving liquid utilization. In addition, when holding the device, users typically hold the middle of the housing 1 in a pen-like or handle-like manner. The top vial and the bottom microneedle assembly 3 form a top-heavy and bottom-light center of gravity distribution (because the liquid is concentrated at the top, the microneedle assembly 3 is a rigid structure and close to the skin). The device is not easy to shake when holding it, especially when operating on delicate areas such as the face and scalp. This can improve the accuracy of the fit between the microneedle assembly 3 and the skin. Moreover, since the microneedle assembly 3 is located at the bottom, users can directly observe the alignment of the microneedle with the target skin area visually, and can accurately position it without adjusting the holding angle.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A medicine applicator, characterized in that, The device includes a housing and a liquid medicine bottle, a pumping assembly, a driving assembly, and a microneedle assembly disposed on the housing. The liquid medicine bottle is connected to the pumping assembly through an inlet channel, and the pumping assembly is connected to the microneedle assembly through an outlet channel to deliver liquid drawn from the liquid medicine bottle to the microneedle assembly. The driving assembly is connected to the microneedle assembly for driving the microneedle assembly to perform reciprocating acupuncture motion.

2. The medicine applicator according to claim 1, characterized in that, The pumping assembly includes a pump body and a pump hose. The pump hose is connected in series between the inlet channel and the outlet channel. The pump body extracts and transports liquid by squeezing the pump hose.

3. The medicine applicator according to claim 2, characterized in that, It also includes an inlet pipe and an outlet pipe, the inlet pipe forming the liquid inlet channel and the outlet pipe forming the liquid outlet channel, and the inlet pipe and the outlet pipe are connected by the pump hose.

4. The medicine applicator according to claim 1, characterized in that, The drive assembly includes a power source and a transmission structure. The transmission structure includes a cam and an elastic element. The power source drives the cam to rotate, and the cam drives the microneedle assembly to reciprocate through the elastic element.

5. A medicine applicator according to claim 1, characterized in that, The drive assembly also includes a hollow tubular transfer element, one end of which is connected to the liquid outlet channel and the other end of which is connected to the internal channel of the microneedle assembly.

6. The medicine applicator according to claim 1, characterized in that, The microneedle assembly includes a microneedle body with a hollow channel inside. The tip of the microneedle body has a first liquid outlet hole, which is connected to the hollow channel.

7. A medicine applicator according to claim 6, characterized in that, The tip of the microneedle body is an array of microneedles, and a second liquid outlet is provided around the tip of the microneedle body, which is connected to the hollow channel.

8. A medicine applicator according to claim 1, characterized in that, The casing contains a battery.

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