Smearing device for dermatological department

Abstract

The invention discloses a smearing device for the dermatological department. The smearing device comprises a handle shell, a deformation fitting smearing head, a multi-stage mixing module and a directional disinfection system. The front end of the handle shell is provided with a spherical hinge connector, and the top is provided with a control panel; the deformation fitting smearing head is movably connected with the handle shell through a spherical hinge connector; the multi-stage mixing module is mounted in the handle shell; and the directional disinfection system is arranged at the front part of the handle shell. Three-dimensional turbulent flow is formed by the pyramids distributed in the tree-shaped flow channel base body in a staggered mode, so that different liquid medicine is fully fused, and it is ensured that the medicine effect is stably exerted; the directional disinfection system accurately sprays atomized disinfectant through an annular spray nozzle, so that an additional disinfection step is omitted, and the risk of cross infection is reduced; the elastic framework of the deformation fitting smearing head is matched with the curved surface of the skin in real time under the driving of the electric control deformation assembly, so that the liquid medicine uniformly covers the concave-convex part; the control panel adjusts the liquid medicine mixing proportion and the disinfection intensity in a linkage mode, the operation process is simplified, and the treatment efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of dermatological instruments, and more particularly to a dermatological application device. Background Technology

[0002] Dermatology is a branch of surgery, primarily treating various skin diseases. Common skin diseases include dermatitis, tinea, herpes, impetigo, pyogenic infections, scars, tinea, ichthyosis, and eczema. Patients with skin diseases generally require topical medication treatment. Skin medications come in ointments, liquids, or fixed powders, and different types of medications are needed for different skin conditions.

[0003] Dermatological treatments often require the even application of medication to the affected area. Existing application devices have the following drawbacks: 1. Uneven mixing of medication: Multi-component medications cannot be fully mixed, affecting efficacy; 2. Cumbersome disinfection procedures: Alcohol wipes need to be prepared separately, increasing the number of steps; 3. Insufficient adhesion to the affected area: Rigid application heads are difficult to adapt to the curvature of the skin, resulting in uneven coverage of the medication; 4. Risk of cross-infection: Reusable parts are not thoroughly disinfected.

[0004] Although some devices have attempted to integrate disinfection functions, they have not solved the core problem of dynamic mixing of the medication and adaptive application to the affected area. Summary of the Invention

[0005] This invention discloses a dermatological application device, which improves upon existing structures and shortcomings to provide a dermatological application device with better practical value.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dermatological application device includes: a handle housing, a deformable and conformal application head, a multi-stage mixing module, and a directional disinfection system;

[0008] The handle housing has a ball joint connector at the front end and a control panel at the top;

[0009] The deformable applicator head is movably connected to the handle housing via the ball joint connector;

[0010] The multi-level hybrid module is installed inside the handle housing;

[0011] The directional disinfection system is located at the front of the handle housing.

[0012] In some embodiments, the deformable applicator head includes: an elastic skeleton woven from shape memory alloy, a silicone matrix covering the outer wall of the elastic skeleton, and micro-liquid sacs uniformly distributed on the surface of the silicone matrix.

[0013] In some embodiments, the elastic frame is connected to an electrically controlled deformation component, the electrically controlled deformation component comprising:

[0014] A sealed capsule filled with intelligent fluid is embedded in the internal cavity of the handle housing;

[0015] The array of microelectrodes is connected to the elastic skeleton via a ball joint connector.

[0016] The voltage regulator is fixed to the circuit board below the control panel.

[0017] In some embodiments, the multi-stage mixing module includes: at least two drug reservoirs and a tree-shaped flow channel substrate, with the middle of the at least two drug reservoirs; the input end of the tree-shaped flow channel substrate is connected to the bottom of each drug reservoir via a conduit, and its output end extends to the center of the ball joint connector.

[0018] In some embodiments, the tree-like flow channel matrix includes:

[0019] The first-stage diversion channel has its inlet vertically connected to the outlet of the liquid medicine storage chamber;

[0020] The second-stage mixing channel is connected to the first-stage diversion channel at a 45° angle, and the inner wall of the channel is provided with staggered guide protrusions;

[0021] The final stage busbar connects to the outlet of the second stage mixing channel;

[0022] A miniature electronically controlled valve, threadedly mounted on the outlet end face of the final stage manifold.

[0023] In some embodiments, the directional disinfection system includes: a disinfection solution container, an ultrasonic oscillator, and an annular spray nozzle. The disinfection solution container is embedded in the side wall interlayer of the handle housing. The ultrasonic oscillator is mounted on the bottom of the disinfection solution container via a bracket. The annular spray nozzle is sleeved on the outer base of the ball joint connector.

[0024] In some embodiments, the handle housing is provided with a waste liquid recovery mechanism. The waste liquid recovery component includes a vacuum generator and a waste liquid collector. The vacuum generator is threaded to the tail end of the handle housing. The waste liquid collector is removably installed in a slot below the vacuum generator. The ball joint connector is also provided with an adsorption port at its central axis position. An electro-responsive filter membrane is provided at the outlet of the adsorption port. The electro-responsive filter membrane is fixed to the step surface of the adsorption port by an annular pressure ring.

[0025] In some embodiments, the ball joint connector includes:

[0026] Three concentric nested spherical bearings, with the outer bearing threaded to the front end of the handle housing;

[0027] A three-dimensional angle sensor is mounted on the inner surface of the innermost bearing.

[0028] Pressure feedback unit embedded in the annular gap between the middle and outer bearing layers.

[0029] In some embodiments, the guide protrusions include: low-height pyramids distributed in the inlet area of ​​the second-stage mixing channel; medium-height pyramids arranged in a spiral array in the middle section of the channel; and high-height pyramids densely arranged at the end of the channel.

[0030] In some embodiments, the annular spray nozzle has a built-in acoustic focusing device, which is fixed to the inner cavity of the spray nozzle by a snap-fit, and its curved surface satisfies the following equation:

[0031] The dermatological application device provided by this invention has the following advantages:

[0032] 1. The low-height, medium-height, and high-height pyramids interspersed within the tree-like flow channel matrix form a three-dimensional turbulent flow, which allows different drug solutions to fully blend, resulting in more uniform drug mixing and ensuring stable drug efficacy.

[0033] 2. The directional disinfection system precisely sprays atomized disinfectant through a ring-shaped nozzle, eliminating the need for additional disinfection steps, reducing the risk of cross-infection, and achieving integrated disinfection and application.

[0034] 3. The elastic skeleton of the deformable applicator head matches the skin curvature in real time under the drive of the electronically controlled deformation component, so that the medicine can evenly cover the uneven areas.

[0035] 4. The control panel allows for the coordinated adjustment of the drug solution mixing ratio and disinfection intensity, simplifying the operation process and improving treatment efficiency.

[0036] 5. The waste liquid recycling mechanism automatically removes residual liquid after contact with the affected area, and the electro-responsive filter membrane blocks the backflow of pathogens to ensure hygiene and safety. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of a dermatological application device proposed in this invention;

[0038] Figure 2 This is a cross-sectional view of the handle housing of a dermatological application device proposed in this invention;

[0039] Figure 3 This is a cross-sectional view of a ball joint connector for a dermatological application device proposed in this invention.

[0040] Figure 4 This is a schematic diagram of the elastic skeleton of a dermatological application device proposed in this invention;

[0041] Figure 5 This is a schematic diagram of the structure of a micro-liquid sac for a dermatological application device proposed in this invention;

[0042] Figure 6 This is a schematic diagram of the structure of the tree-shaped flow channel matrix of a dermatological application device proposed in this invention;

[0043] Figure 7 for Figure 6 A magnified view of a portion at point A shown;

[0044] Figure 8 This is a partial internal structural diagram of a directional disinfection system for a dermatological application device proposed in this invention.

[0045] In the attached diagram: 1-Handle housing; 101-Spherical joint connector; 101a-Spherical bearing; 101b-Three-dimensional angle sensor; 101c-Pressure feedback unit; 102-Control panel; 103-Internal partition; 2-Deformable applicator head; 202-Elastic skeleton; 203-Silicone matrix; 204-Micro bladder; 204a-Honeycomb micropores; 204b-Reservoir; 204c-Buffer chamber; 204 d - Microfiltration membrane; 204e - Compressed sponge; 301 - Drug reservoir; 301a - Sealing cap; 301b - Conical outlet; 301c - Piston-type separator; 301d - First main chamber; 301e - Buffer chamber; 302 - Tree-shaped flow channel matrix; 302a - First-stage diversion channel; 302b - Second-stage mixing channel; 302c - Final-stage confluence channel; 303a - Low-height pyramid; 303b - Middle High-height pyramid; 303c - High-height pyramid; 304 - Miniature electronically controlled valve; 4 - Directional disinfection system; 401 - Disinfectant solution container; 401a - Leak-proof filling port; 401b - First one-way valve; 401c - Thermally conductive boss; 401d - Flow guide rib; 401e - Liquid level sensing electrode; 402 - Ultrasonic oscillator; 402a - Piezoelectric ceramic ring; 402b - Amplitude transformer; 403 - Annular spray nozzle; 40 3a-Conical micropore; 404-Acoustic focusing device; 501-Sealing capsule; 502-Microelectrode; 501a-Serpentine diaphragm; 501b-Second main chamber; 501c-Compensation chamber; 501d-Microelectrode area; 501e-Second one-way valve; 502-Microelectrode; 503-Voltage regulator; 601-Vacuum generator; 602-Waste liquid collector; 603-Adsorption port; 604-Electrically responsive filter membrane. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0047] Reference Figures 1 to 8 In a preferred embodiment, a dermatological application device includes: a handle housing 1, a deformable and conformal application head 2, a multi-stage mixing module, and a directional disinfection system 4;

[0048] The handle housing 1 has a ball joint connector 101 at the front end and a control panel 102 at the top;

[0049] The deformable applicator head 2 is movably connected to the handle housing 1 via a ball joint connector 101;

[0050] The multi-level hybrid module is installed inside the handle housing 1;

[0051] The directional disinfection system 4 is located at the front of the handle housing 1.

[0052] Specifically, such as Figure 1 and Figure 2 As shown, the handle housing 1 has a hyperbolic streamlined structure with an elliptical cross-section. The longitudinal front end narrows to form a tapered interface area, while the rear expands to form a hand-held grip area. This grip area has an anti-slip diamond-shaped mesh texture on its surface. An internal partition 103 divides the housing into three independent chambers: an upper circuit chamber for housing the PCB board of the control panel 102 and the voltage regulator 503; a middle mixing chamber for fixing the tree-like flow channel substrate 302 and the liquid medicine storage 301; and a lower power chamber for housing the miniature air pump of the vacuum generator 601. This achieves physical isolation between the electronic control, liquid medicine mixing, and waste liquid recovery systems, preventing mutual interference.

[0053] like Figure 3 As shown, in some embodiments, the ball joint connector 101 includes:

[0054] A three-layer concentric nested spherical bearing 101a, with the outer bearing threadedly connected to the front end of the handle housing 1;

[0055] A three-dimensional angle sensor 101b is mounted on the inner surface of the innermost bearing.

[0056] Pressure feedback unit 101c is embedded in the annular gap between the middle and outer bearings.

[0057] Specifically, the spherical bearing 101a is a three-layer concentric nested spherical shell, comprising an outer spherical shell, a middle spherical shell, and an inner spherical shell. The outer spherical shell is screwed into the front end of the handle housing, the middle spherical shell is welded to the inner boss of the outer spherical shell, and the inner spherical shell is embedded in the guide rail of the middle spherical shell via a PTFE slip ring. This nested structure of the three spherical shells allows the applicator head to deflect arbitrarily within a ±15° cone angle range, matching the changes in skin curvature in real time (such as complex areas like the nasolabial folds and eye sockets). The inner ceramic spherical shell evenly distributes the operating pressure to the vent area of ​​the middle layer, avoiding jamming caused by stress concentration. The three-dimensional angle sensor 101b is installed at the center of the inner surface of the inner spherical shell. It is used to generate applicator posture data in real time by measuring the three-dimensional Euler angles (pitch angle α / yaw angle β / roll angle γ) of the inner spherical shell relative to the handle housing. When an angle β > 10° is detected (non-perpendicular force), an audible and visual alarm is triggered via the control panel 102. The pressure feedback unit 101c includes four sets of annular piezoelectric ceramic sheets. These four sets of annular piezoelectric sheets detect contact pressure in the 0°, 90°, 180° and 270° directions, respectively. When the pressure is greater than 0.5N, a signal is output to the electronically controlled deformation component to initiate the surface reconstruction of the elastic skeleton 202. When the pressure is greater than 10N, the power supply to the microelectrode 502 is automatically cut off to prevent skin damage.

[0058] See also Figure 4 and Figure 5In some embodiments, the deformable applicator head 2 includes: an elastic skeleton 202 woven from shape memory alloy, a silicone matrix 203 covering the outer wall of the elastic skeleton 202, and micro-liquid sacs 204 uniformly distributed on the surface of the silicone matrix 203. Specifically, the elastic skeleton 202 is made of nickel-titanium shape memory alloy, woven in a hexagonal honeycomb structure, with multiple cantilever beam connecting claws extending from its outer periphery. The ends of these cantilever beam connecting claws are connected to the inner spherical shell by screws. The center point of the skeleton is hinged to the pusher ball head of the electronically controlled deformation component. The superelasticity of the nickel-titanium shape memory alloy (phase transition temperature 35°C) allows the elastic skeleton 202 to deform completely reversibly within a strain range of 0-40%, and the hexagonal woven mesh disperses local pressure across the entire curved surface, avoiding stress concentration. The silicone matrix 203 is medical-grade liquid silicone with several frustum-shaped micro-protrusions distributed on its surface. Each micro-protrusion has a hemispherical liquid reservoir at its base, which is connected to a micro-liquid capsule 204. The low hardness of the silicone matrix 203 allows the micro-protrusions to deform under a contact force of 0.01N, conforming to the skin texture. The reservoir temporarily stores the medication; when the micro-protrusion is deformed under pressure, the volume decreases, causing the medication to seep out from the top. The micro-liquid capsule 204 is ellipsoidal in shape, with a hexagonal lattice arrangement on the surface of the silicone matrix 203. Its surface is arrayed with honeycomb-shaped micropores 204a. Its inner cavity is divided into a reservoir chamber 204b and a buffer chamber 204c by a microfiltration membrane 204d. A compressed sponge 204e is located within the buffer chamber 204c. The medication in the reservoir 204b seeps out through the honeycomb-shaped micropores 204a into the buffer chamber 204c. The compressed sponge 204e absorbs the over-pressurized medication and blocks impurities with a particle size >5μm through the microfiltration membrane 204d. When the fluid sac comes into contact with the skin, the surface micropores are compressed and expanded, increasing the seepage rate by 3 times. The compressed sponge 204e absorbs energy through deformation under pressure, preventing hard contact that could damage the wound. The surface of the micro-fluid sac 204 has a sealing flange to block pathogen invasion. The surface of the honeycomb-shaped micropores 204a is modified with a hydrophilic coating (contact angle θ = 30°) to form a capillary effect, maintaining medication seepage for 15 minutes. Adjacent fluid sacs are connected to the internal microchannels through the silica matrix 203 to balance the medication storage in different areas.

[0059] See also Figure 6 and Figure 7 In some embodiments, the multi-stage mixing module includes at least two liquid storage chambers 301 and a tree-shaped flow channel base 302. The at least two liquid storage chambers 301 are arranged side by side in the middle of the handle housing 1. The input end of the tree-shaped flow channel base 302 is connected to the bottom of each liquid storage chamber 301 through a conduit, and its output end extends to the center of the ball joint connector 101.

[0060] In some embodiments, the tree-like flow channel substrate 302 includes:

[0061] The first-stage diversion channel 302a has its inlet vertically connected to the outlet of the liquid storage chamber 301.

[0062] The second-stage mixing channel 302b is connected to the first-stage diversion channel 302a at a 45° angle, and the inner wall of the channel is provided with staggered guide protrusions;

[0063] The final stage bus channel 302c connects to the outlet of the second stage mixing channel 302b;

[0064] The miniature electric control valve 304 is threadedly installed on the outlet end face of the final stage manifold 302c.

[0065] In some embodiments, the guide protrusions include: low-height pyramids 303a distributed in the inlet area of ​​the second-stage mixing channel; medium-height pyramids 303b arranged in a spiral array in the middle section of the channel; and high-height pyramids 303c densely arranged in the end section of the channel.

[0066] Specifically, the two liquid storage containers 301 are symmetrically arranged cylindrical containers, each with a threaded sealing cap 301a at the top and a tapered outlet 301b at the bottom with a cone angle of 60°. A piston-type partition plate 301c divides the liquid storage container 301 into a first main chamber 301d and a buffer chamber 301e with a volume ratio of 3:1. The buffer chamber 301e contains spiral guide vanes to eliminate piston movement pulsation. The liquid storage containers 301 are installed symmetrically in the middle of the central mixing chamber via snap-on slide rails. The tapered outlet 301b is connected to the tree-shaped flow channel inlet via a quick connector. This serves to physically separate the dual-chamber design and avoid pre-mixing of the liquids. The tree-shaped flow channel base 302 is a transparent PMMA cuboid for easy observation of the mixing process and is installed below the liquid storage containers 301. The first-stage diversion channel 302a is Y-shaped with a branch angle of 60°, achieving equal flow distribution. The final-stage confluence channel 302c is a tapered tube, which suppresses eddy current generation. The tree-like flow channel substrate 302 also features laser-etched velocity scales. The guide protrusions are integrally molded into the inner wall of the second-stage mixing channel 302b using micro-injection molding, with plasma-etched microgrooves on their surface. The asymmetrical layout of low-height pyramids 303a, medium-height pyramids 303b, and high-height pyramids 303c disrupts the laminar boundary layer, and the three-stage height difference generates velocity gradient shear. The sharp edge design prevents fiber adhesion to the walls. The micro-electric control valve 304 is a stainless steel cylinder used for precise flow control.

[0067] like Figure 8 As shown, in some embodiments, the directional disinfection system 4 includes: a disinfection solution container 401, an ultrasonic oscillator 402, and an annular spray nozzle 403. The disinfection solution container 401 is embedded in the side wall interlayer of the handle housing 1. The ultrasonic oscillator 402 is mounted on the bottom of the disinfection solution container 401 by a bracket. The annular spray nozzle 403 is sleeved on the outer base of the ball joint connector 101.

[0068] In some embodiments, the annular spray nozzle 403 incorporates a built-in acoustic focusing device 404, which is fixed to the inner cavity of the spray nozzle by a snap-fit ​​mechanism, and its curved surface satisfies the following equation:

[0069] Specifically, the disinfectant solution container 401 is a flat elliptical cylinder with a leak-proof filling port 401a at the top and a built-in first one-way valve 401b that automatically closes when tilted. The bottom has a heat-conducting protrusion 401c to transfer heat from the oscillation and prevent crystallization. Internally, it has honeycomb-shaped flow guide ribs 401d and liquid level sensing electrodes 401e. The flow guide ribs 401d increase the heat exchange area, and the liquid level sensing electrodes 401e are arranged in three equidistant groups along their length to detect the liquid level and trigger a low-liquid alarm. The ultrasonic oscillator 402 includes a piezoelectric ceramic ring 402a and an amplitude transformer 402b. The amplitude transformer 402b amplifies the amplitude by three times; it is made of titanium alloy, which is resistant to long-term corrosion from alcohol-based disinfectants. The annular spray nozzle 403 is an annular cavity with an array of distributed conical micropores 403a at its atomization outlet to increase the droplet velocity.

[0070] In some embodiments, the elastic frame 202 is connected to an electrically controlled deformation component, the electrically controlled deformation component including:

[0071] A sealed capsule 501 filled with intelligent fluid is embedded in the internal cavity of the handle housing 1;

[0072] The array of microelectrodes 502 has wires that pass through the ball joint connector 101 and connect to the elastic skeleton 202;

[0073] Voltage regulator 503 is fixed to the circuit board below control panel 102.

[0074] Specifically, the sealing capsule 501 is a double-chambered flat ellipsoid with a serpentine diaphragm 501a inside, dividing the capsule into a second main chamber 501b and a compensation chamber 501c. The second main chamber 501b is connected to the microelectrode region 501d, and the compensation chamber 501c is equipped with a second one-way valve 501e. The surface of the sealing capsule 501 is also covered with a conductive coating. Under an electric field, the viscosity of the electrorheological / magnetorheological fluid increases dramatically, causing the serpentine diaphragm 501a to deform and transmit pressure to the elastic skeleton 202. The compensation chamber 501c adjusts its volume through the second one-way valve 501e to eliminate the effects of thermal expansion, and the conductive coating uniformly distributes the electric field. The microelectrode 502 consists of multiple needle-shaped electrode units and also includes a carrier substrate. The electrode units are disposed on the carrier substrate, which is located on the surface of the main chamber of the sealing capsule 501. The electrode signals generated by the microelectrode 502 are linked with the pressure feedback unit 101c to dynamically adjust the curvature of the elastic skeleton 202.

[0075] In some embodiments, the handle housing 1 is provided with a waste liquid recovery mechanism. The waste liquid recovery component includes a vacuum generator 601 and a waste liquid collector 602. The vacuum generator 601 is threaded to the tail end of the handle housing 1. The waste liquid collector 602 is removably installed in the slot below the vacuum generator 601. The ball joint connector 101 is also provided with an adsorption port 603 at the central axis position. An electro-responsive filter membrane 604 is provided at the outlet of the adsorption port 603. The electro-responsive filter membrane 604 is fixed to the stepped surface of the adsorption port 603 by an annular pressure ring.

[0076] Specifically, the vacuum generator 601 is an aluminum alloy cylindrical strip with internal heat dissipation fins. It is screwed into the tail end of the handle housing 1 and is used to convert compressed air into negative pressure. The horn-shaped stainless steel suction nozzle of the adsorption port 603 is fixed to the central shaft of the ball joint connector 101 by screws. It has an internal array of anti-clogging pins to prevent fiber blockage and is used to efficiently collect waste liquid. The electro-responsive filter membrane 604 is installed on the outlet end face of the adsorption port 603 by a pressure ring bolt. Its three-layer composite structure (including a temperature-sensitive gel layer) is hydrophilic and permeable to liquid in the working state (>32℃) and hydrophobic and antibacterial in the shutdown state (<32℃). The transparent double chamber of the waste liquid collector 602 is slid into the bottom slot of the handle housing 1 by a magnetic lock. It is equipped with a duckbill valve and an exhaust filter to achieve backflow prevention and sterile exhaust.

[0077] Working principle:

[0078] Before operation: Open the cover of the medicine storage chamber 301 on the side wall of the handle housing 1 and inject the medicine to be mixed. Fill the disinfectant container 401 with medical disinfectant. Set the medicine mixing mode and disinfection intensity through the control panel 102.

[0079] During operation: Aim the annular spray nozzle 403 at the affected area and activate the directional disinfection system 4. The ultrasonic oscillator 402 atomizes the disinfectant solution for precise disinfection, pre-treating the skin. The medication enters the tree-like flow channel matrix 302 from the storage chamber 301. After being distributed by the first-stage diversion channel 302a, it is fully mixed in the second-stage mixing channel 302b under the turbulence of the guide protrusions, and finally output through the final-stage confluence channel 302c. The mixed medication is delivered to the deformable applicator head 2. When the applicator head contacts the skin, the three-layer spherical bearing 101a of the ball joint connector 101 adaptively deflects according to the applied force angle; the pressure feedback unit 101c detects the contact pressure and transmits it to the control module; the voltage regulator 503 drives the microelectrode 502 according to the pressure data, causing the intelligent fluid in the sealing bladder 501 to flow, pushing the elastic skeleton 202 to deform, so that the silicone matrix 203 completely conforms to the skin surface. After application, the waste liquid recovery mechanism 6 is activated. The vacuum generator 601 generates negative pressure, causing the residual drug liquid to be drawn in through the adsorption port 603. After being isolated by the pathogen through the electro-responsive filter membrane 604, it is stored in the waste liquid collector 602.

[0080] After work: Disassemble the waste liquid collector 602 to clean up the residual liquid; immerse the deformable applicator head 2 in disinfectant solution; press and hold the disinfection button on the control panel 102 to activate the PVDF piezoelectric film on the surface of the handle housing 1, and inactivate surface microorganisms through high-frequency vibration.

[0081] Any content not described in detail in this specification is prior art known to those skilled in the art.

[0082] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A dermatological application device, characterized in that, include: Handle housing (1), deformable applicator head (2), multi-stage mixing module and directional disinfection system (4); The handle housing (1) has a ball joint connector (101) at the front end and a control panel (102) at the top; The deformable applicator head (2) is movably connected to the handle housing (1) via the ball joint connector (101); The multi-level hybrid module is installed inside the handle housing (1); The directional disinfection system (4) is located at the front of the handle housing (1).

2. The dermatological application device according to claim 1, characterized in that, The deformable adhesive applicator (2) includes: an elastic skeleton (202) woven from shape memory alloy, a silicone matrix (203) covering the outer wall of the elastic skeleton (202), and micro liquid sacs (204) evenly distributed on the surface of the silicone matrix (203).

3. The dermatological application device according to claim 2, characterized in that, The elastic frame (202) is connected to an electrically controlled deformation component, the electrically controlled deformation component comprising: A sealed capsule (501) filled with smart fluid is embedded in the internal cavity of the handle housing (1); The array of microelectrodes (502) is connected to the elastic skeleton (202) via a ball joint connector (101); The voltage regulator (503) is fixed to the circuit board below the control panel (102).

4. The dermatological application device according to claim 1, characterized in that, The multi-stage mixing module includes at least two liquid storage chambers (301) and a tree-shaped flow channel substrate (302). The at least two liquid storage chambers (301) are arranged side by side in the middle of the handle housing (1). The input end of the tree-shaped flow channel substrate (302) is connected to the bottom of each liquid storage chamber (301) through a conduit, and its output end extends to the center of the ball joint connector (101).

5. The dermatological application device according to claim 4, characterized in that, The tree-like flow channel substrate (302) includes: The first-stage diversion channel (302a) has its inlet vertically connected to the outlet of the liquid medicine storage chamber (301); The second-stage mixing channel (302b) is connected to the first-stage diversion channel (302a) at a 45° angle, and the inner wall of the channel is provided with staggered guide protrusions; The final stage busbar (302c) connects to the outlet of the second stage mixing channel (302b); A miniature electronically controlled valve (304) is threaded onto the outlet face of the final stage manifold (302c).

6. The dermatological application device according to claim 1, characterized in that, The directional disinfection system (4) includes: a disinfection solution container (401), an ultrasonic oscillator (402), and an annular spray nozzle (403). The disinfection solution container (401) is embedded in the side wall interlayer of the handle housing (1). The ultrasonic oscillator (402) is mounted on the bottom of the disinfection solution container (401) by a bracket. The annular spray nozzle (403) is sleeved on the outer base of the ball joint connector (101).

7. The dermatological application device according to claim 1, characterized in that, The handle housing (1) is provided with a waste liquid recovery mechanism. The waste liquid recovery component includes a vacuum generator (601) and a waste liquid collector (602). The vacuum generator (601) is connected to the tail end of the handle housing (1) by a thread. The waste liquid collector (602) is removably installed in the slot below the vacuum generator (601). The ball joint connector (101) is also provided with an adsorption port (603) at the center axis position. An electro-responsive filter membrane (604) is provided at the outlet of the adsorption port (603). The electro-responsive filter membrane (604) is fixed to the stepped surface of the adsorption port (603) by an annular pressure ring.

8. The dermatological application device according to claim 1, characterized in that, The ball joint connector (101) includes: A three-layer concentric nested spherical bearing (101a), with the outer bearing threadedly connected to the front end of the handle housing (1); A three-dimensional angle sensor (101b) is mounted on the inner surface of the innermost bearing. Pressure feedback unit (101c) embedded in the annular gap between the middle and outer bearings.

9. The dermatological application device according to claim 5, characterized in that, The flow-guiding protrusions include: low-height pyramids (303a) distributed in the inlet area of ​​the second-stage mixing channel; medium-height pyramids (303b) arranged in a spiral array in the middle section of the channel; and high-height pyramids (303c) densely arranged at the end of the channel.

10. The dermatological application device according to claim 6, characterized in that, The annular spray nozzle (403) has a built-in acoustic focusing device (404), which is fixed to the inner cavity of the spray nozzle by a snap fastener. Its curved surface satisfies the following equation:

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