Visual intracavity microneedle injection device

Abstract

The invention discloses a visual intracavitary microneedle injection device in the field of medical cosmetology instruments, which comprises a controller and a support part, and one end of the support part is detachably connected with a distraction part; a medicine container needle cylinder is detachably connected into the opening part, scale marks are carved on the surface of the needle cylinder, and a driving assembly used for driving the medicine container needle cylinder to convey medicine and rotate by 360 degrees is arranged in the supporting part. The end, away from the supporting part, of the distraction part is rotationally matched with a connecting ring. By means of an automatic rotary injection mode, 360-degree rotation is gradually carried out in the vagina, uniform rotary injection of medicine is achieved, manual angle adjustment is not needed, in the injection process, the microneedle penetrates through the vaginal mucosa to carry out visual injection, the medicine is accurately sent to the submucosa, medicine absorption is facilitated, the treatment effect is achieved, pain and discomfort of a patient can be reduced, and the application range is wide. Visual injection facilitates big data and AI evaluation on the injection effect, so that a personalized treatment scheme is formulated; meanwhile, the device is easy and convenient to operate and suitable for clinical application and popularization.

Description

Technical Field

[0001] The present invention belongs to the field of medical cosmetic instruments, and in particular is a visualized intracavitary microneedle injection device. Background Art

[0002] With the advancement of medical technology and the increasing demand of patients for treatment comfort, minimally invasive treatment has become an important development direction of modern medicine. Microneedle injection, as a minimally invasive technology, can reduce trauma and pain to patients, so it has received widespread attention in various medical fields.

[0003] As women age and due to various factors such as pregnancy and childbirth, their vaginas will gradually become loose and lose elasticity. In severe cases, vaginal prolapse, frequent urination, urinary incontinence, decreased secretory function, vaginal dryness, etc. may occur, which undoubtedly has a serious impact on women's quality of life. In recent years, with the improvement of women's health awareness, the demand for reproductive repair and health care, treatment and prevention of pelvic floor dysfunction diseases (such as pelvic organ prolapse, vaginal relaxation, stress urinary incontinence, sexual intercourse pain, etc.) has continued to grow. As an important part of the female reproductive system, the health of the vagina is directly related to the overall health and quality of life of women. Therefore, it is particularly important to develop a device that can effectively and safely treat vaginal-related diseases or vaginal beauty care.

[0004] In the prior art, attempts have been made to improve the above situation by injecting drugs into the vaginal mucosa through artificial injection, but there is no precedent for intracavitary microneedle injection. Based on the current development status and application effects of injectable biomaterials used for plastic surgery, intracavitary microneedle injection will be used as a new minimally invasive treatment method for the treatment of female pelvic floor dysfunction diseases and the maintenance of vaginal rejuvenation. However, the existing microneedle injection, taking the existing water-light needle injection as an example, is not suitable for the structure of the vagina due to its limited injection angle, and cannot complete a 360° all-round injection of the vaginal mucosa. Traditional artificial injection is inefficient, the learning curve for the operating doctor is long, and the injection uniformity cannot be guaranteed. Therefore, in order to solve the above problems, it is necessary to propose a visual intracavitary microneedle injection device. Summary of the invention

[0005] The purpose of the present invention is to propose a visualized intracavitary microneedle injection device, which uses an expansion part to expand and flatten the folds of the vaginal wall. The operator holds the support part and gradually rotates 360° in the vagina through automatic rotation injection to achieve uniform rotation injection of the drug. There is no need to manually adjust the angle, and the injection efficiency is high. During the injection process, the microneedle can penetrate the vaginal mucosa and accurately deliver the drug to the submucosal layer, which is convenient for drug absorption, achieves a therapeutic effect, and can reduce the patient's pain and discomfort. At the same time, the device is easy to operate, safe and reliable, and is suitable for clinical promotion and use.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a visualized intracavitary microneedle injection device, comprising a controller and a support part, one end of the support part is detachably connected to an expansion part; the surface of the expansion part is engraved with scale lines, and a syringe is detachably connected inside the expansion part; a driving component for driving the syringe to deliver drugs and rotate 360° is provided in the support part; a connecting ring is fixedly connected to the end of the expansion part away from the support part, and a through hole is opened on the side wall of the connecting ring, and an injection component for injecting drugs is detachably connected to the through hole; an injection tube is connected to the top of the syringe, and the end of the injection tube away from the syringe passes through the expansion part and is connected to the injection component; the injection tube is detachably fixedly connected to the expansion part; it also includes a mainframe, a connecting part for connecting the support part to the mainframe is fixedly connected to the bottom of the support part, a negative pressure component for delivering negative pressure to the injection component is provided in the mainframe, and a support component for supporting the support part is provided on the top of the mainframe; it also includes a camera component for assisting doctors in visualized injection.

[0007] The following principles and beneficial effects are achieved by adopting the above scheme:

[0008] Basic principle: First, clean the vagina to ensure that there is no inflammation and infection; after preparing the drug to be injected into the syringe, control the injection parameters of the injection component through the controller; hold the support part and connect the device to the host through the connecting part; insert the expansion part into the vagina, and the expansion part can expand and flatten the folds of the patient's vaginal wall; start the host and the injection component, and after the negative pressure component adsorbs the patient's vaginal skin, the drug is injected into the vaginal wall mucosa through the injection component. During the injection process, the injection component penetrates the vaginal mucosa and delivers the drug to the submucosal layer to achieve the injection effect; during the injection, start the drive component, and the drive component drives the injection component to gradually rotate 360°. The rotation method is to rotate a certain angle after each injection, and then evenly inject 360° into the vaginal wall in turn; after the injection is completed, clean the vagina, observe the patient's reaction, and ensure that there is no discomfort and complications; and with the assistance of the camera component, the doctor can achieve visual injection, which facilitates big data and AI evaluation of the injection effect, and then formulates a personalized treatment plan.

[0009] Beneficial effects: 1. The present application uses the expansion part to expand and flatten the folds of the vaginal wall. The operator holds the support part and gradually rotates 360° in the vagina through automatic rotation injection to achieve uniform rotation injection of the drug. There is no need to manually adjust the angle, and the injection efficiency is high. During the injection process, the microneedle can penetrate the vaginal mucosa and accurately deliver the drug to the submucosal layer, which is convenient for drug absorption, achieves the therapeutic effect, and can reduce the patient's pain and discomfort. At the same time, the device is easy to operate, safe and reliable, and is suitable for clinical promotion and use.

[0010] 2. In this application, the syringe, expansion part, injection assembly and other components are all disposable items, and are all detachable, one for one patient, to avoid subsequent cross infection and ensure the patient's medical safety.

[0011] Furthermore, a piston is vertically slidably engaged in the syringe; the driving assembly includes a motor, which is embedded and installed in the supporting part; a cavity is opened in the supporting part, and an internal hollow rotating part is rotatably engaged in the cavity, and the output shaft of the motor is fixedly connected to the bottom of the rotating part; a telescopic rod is installed in the rotating part, and a push rod is fixedly connected to the output end of the telescopic rod, and the end of the push rod away from the telescopic rod passes through the top of the supporting part and the bottom of the syringe and contacts with the bottom of the piston, and the push rod is detachably and fixedly connected to the bottom of the syringe; the controller is used to control the operation of the motor and the telescopic rod.

[0012] Beneficial effects: Before performing the injection operation, insert the push rod into the syringe so that the push rod contacts the piston; when it is necessary to inject the drug through the injection assembly, start the telescopic rod, the telescopic rod pushes the push rod to move, and the push rod pushes the piston to move, pushing the drug in the syringe into the injection assembly for subsequent injection; when a 360° rotating injection is required, start the motor, and the motor drives the rotating part, telescopic rod, push rod, syringe, expansion part, connecting ring and injection assembly to rotate as a whole, thereby realizing the rotational injection function of the drug.

[0013] Furthermore, the injection assembly includes an adjusting tube and an injection part, a slide plate is provided in the injection part; one end of the adjusting tube is connected to the injection tube, the adjusting tube and the injection tube are connected at a 90° angle, and the other end of the adjusting tube passes through the side wall of the injection part and rotates with the slide plate; a plurality of microneedles are installed on the slide plate, and the microneedles are all connected to the adjusting tube; an opening is opened on the side of the injection part away from the adjusting tube.

[0014] Beneficial effects: Under the push of the telescopic rod, the medicine in the syringe is pushed into the injection tube, the regulating tube and the microneedle in sequence; the patient's vaginal wall skin is located at the opening under the adsorption of the negative pressure component, and then the microneedle is used to perform intramucosal injection into the patient's vaginal wall mucosa.

[0015] Furthermore, a partition is fixedly connected inside the injection part, a plurality of fixing parts are fixedly connected to the partition, and the ends of the microneedles away from the slide plate all penetrate the partition and the fixing parts adjacent to the partition.

[0016] Beneficial effects: Since the patient's vaginal skin mucosa needs to be adsorbed by the negative pressure component during injection, the setting of the partition can limit the adsorption range to prevent the patient from feeling uncomfortable when the adsorption area is too large under the action of the negative pressure component; the design of the fixing part can ensure the depth of contact between the microneedle and the patient's skin to prevent the microneedle from puncturing too deeply and causing discomfort to the patient.

[0017] Furthermore, a plurality of through grooves are formed on the slide plate, and movable plates and strain gauges are arranged in the through grooves. The movable plate is fixedly connected to the outer wall of one end of the microneedle; and the strain gauge is in contact with the movable plate.

[0018] Beneficial effects: Since the skin hardness and elasticity of different areas in the patient's vagina are slightly different, the injection resistance of the microneedle in different areas is different; when the microneedle is used to puncture the patient's vaginal skin, the microneedle will be subject to a certain resistance. Since the movable plate and the microneedle are an integrated structure, when the microneedle feels the resistance, the movable plate will also feel the resistance. The microneedle and the movable plate will apply a certain pressing force to the strain gauge. When the strain gauge is compressed by the pressing force, its resistance will decrease. The degree of compression of the strain gauge is determined by obtaining the degree of reduction in the resistance of the strain gauge. The greater the compression, the greater the microneedle is subjected to during puncture. The greater the resistance, when the resistance is large, it means that the skin hardness is high or the elasticity is good, and the microneedle insertion may be affected to a certain extent. In order to make the injection of the drug solution more uniform and improve the injection efficiency, the current injection force and speed can be automatically adjusted based on the resistance size; the smaller the compression degree, the smaller the resistance encountered during microneedle puncture. When the resistance is small, it means that the skin elasticity in this area is poor. At this time, the normal setting force and speed can be maintained. In this way, the force and speed of drug injection in different areas can be autonomously adjusted according to the skin hardness and elasticity of different areas to ensure the overall uniformity of drug injection in the vagina.

[0019] Furthermore, one end of the connecting ring away from the expansion part is fixedly connected to a bullet-shaped auxiliary part, and the diameters of the auxiliary part and the connecting ring are consistent with the diameter of the expansion part; the camera assembly includes a camera, which is installed on the side wall of the auxiliary part close to the opening.

[0020] Beneficial effects: Since the patient's vagina needs to be stretched open, and the injection part is located at one end of the stretching part, the wrinkles of the vaginal wall that the injection part contacts cannot be effectively stretched open by the stretching part. Therefore, an auxiliary part is designed so that the injection part is located between the auxiliary part and the stretching part. The auxiliary part and the stretching part can effectively stretch the vagina, making it easier for the injection assembly to inject. During the injection, the camera can take real-time photos of the inside of the vagina and transmit the shooting information to the controller. The controller synchronously images and feeds back to the user based on the image information. The user can intuitively understand the injection situation based on the image information, avoiding repeated injections or injection omissions in a certain area, thereby improving the injection efficiency. At the same time, the camera can play a role in visual injection, which facilitates big data and AI evaluation of the injection effect, and then formulates a personalized treatment plan.

[0021] Furthermore, the connection between the regulating tube and the injection part is threaded, and the slide plate is slidably matched with the inner wall of the injection part.

[0022] Beneficial effect: Before installing the injection part at the opening, the operator can adjust the injection length of the microneedle according to the actual situation. Specifically, the initial position of the slide plate is located at the far left and contacts the side wall of the injection part. Since the adjustment tube and the injection part are threadedly connected, when the adjustment tube is rotated, the adjustment tube will push the slide plate to move closer to the partition, thereby driving the microneedle to move toward the opening, thereby lengthening the injection length of the microneedle.

[0023] Further, the negative pressure assembly is communicated with the gap between the partition and the opening through the connecting portion.

[0024] Beneficial effects: When the negative pressure component is used to adsorb the patient's vaginal skin mucosa, the negative pressure component can be started, and the negative pressure generated by the negative pressure component is transmitted to the gap between the partition and the opening. The patient's skin is adsorbed to the opening by the negative pressure. At this time, the microneedle can puncture the patient's skin to inject drugs into the patient's vaginal mucosa.

[0025] Furthermore, a switch button, a speed-up button and a speed-down button are installed on the top of the support part. The switch button is electrically connected to the controller, the motor and the telescopic rod. The speed-up button and the speed-down button are both electrically connected to the controller. The controller is signal-connected to the telescopic rod.

[0026] Beneficial effects: the device can be started by pressing the switch button; the injection speed can be adjusted by pressing the speed-up button or the speed-down button without stopping or restarting the equipment. Flexible operation improves work efficiency and reduces downtime during use; and avoids overdose due to too fast injection speed or underdose due to too slow speed, ensuring product quality and safety, increasing the intelligence of the device, and improving the convenience and operability of using the device.

[0027] Furthermore, a plurality of grip grooves are formed on the support portion.

[0028] Beneficial effect: The design of the grip groove makes it convenient for the user to hold the support part, thereby improving the stability when using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an axonometric diagram of an embodiment of the present invention.

[0030] Figure 2 It is a cross-sectional view of an embodiment of the present invention.

[0031] Figure 3 For the embodiment of the present invention Figure 2 Enlarged view of part A.

[0032] Figure 4 It is a front view schematic diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following is further explained in detail through a specific implementation method: The figure marks in the drawings of the specification include: rotating part 2, supporting part 4, opening part 5, auxiliary part 6, injection part 8, motor 9, connecting ring 10, telescopic rod 11, push rod 12, syringe 13, piston 14, injection tube 16, adjustment tube 17, slide plate 18, microneedle 19, fixing part 20, movable plate 21, strain gauge 22, partition 23, camera 24, switch button 25, speed increase button 26, speed decrease button 27.

[0034] Embodiment 1

[0035] The embodiment is basically as shown in the attached Figure 1-Figure 4 As shown: a visualized intracavitary microneedle injection device, comprising a controller and a support part 4, the model of the controller is preferably SPC-STW-S0402CTR, and a plurality of grip grooves are provided on the support part 4; the grip grooves are designed to facilitate the user to hold the support part 4, thereby improving the stability when using the device; one end of the support part 4 is detachably connected to a support part 5; the surface of the support part 5 is engraved with scale lines, such as Figure 1 As shown, in this embodiment, the scale values ​​of the scale lines decrease from left to right.

[0036] A syringe 13 is detachably connected to the expansion part 5; a driving assembly for driving the syringe 13 to deliver medicine and rotate 360° is provided in the support part 4; a piston 14 is vertically slidably fitted in the syringe 13; the driving assembly includes a motor 9, which is embedded and installed in the support part 4; a cavity is opened in the support part 4, and an internal hollow rotating part 2 is rotatably fitted in the cavity, and the output shaft of the motor 9 is fixedly connected to the bottom of the rotating part 2 by bolts; a telescopic rod 11 is installed in the rotating part 2, and the model of the telescopic rod 11 is preferably TJC-C3, and the output end of the telescopic rod 11 is fixedly connected to a push rod 12 by bolts, and the end of the push rod 12 away from the telescopic rod 11 passes through the top of the support part 4 and the bottom of the syringe 13 and contacts the bottom of the piston 14, and the push rod 12 is detachably and fixedly connected to the bottom of the syringe 13; a controller is used to control the operation of the motor 9 and the telescopic rod 11.

[0037] The end of the expansion part 5 away from the support part 4 is integrally formed with a connecting ring 10, and a through hole is opened on the side wall of the connecting ring 10, and an injection assembly for injecting drugs is detachably connected to the through hole; the top of the syringe 13 is connected to an injection tube 16, and the end of the injection tube 16 away from the syringe 13 passes through the expansion part 5 and is connected to the injection assembly; the injection tube 16 is detachably fixedly connected to the expansion part 5. The scale line on the expansion part 5 is located in the same vertical direction as the initial position of the injection assembly. When the injection assembly rotates, the scale line will also rotate with it. The design of the scale line can serve as a prompt for the user. The user can judge the rotation angle and direction of the injection assembly based on the position of the scale line to avoid repeated injection and missed injection. And when the expansion part 5 is placed in the patient's vagina, the depth of the expansion part 5 placed in the patient's vagina can be known by reading the scale value on the scale line, thereby improving the controllability of the depth of the expansion part 5.

[0038] The injection assembly includes a regulating tube 17 and an injection part 8, and a slide plate 18 is provided in the injection part 8; one end of the regulating tube 17 is connected to the injection tube 16, and the regulating tube 17 and the injection tube 16 are connected at a 90° angle, and the other end of the regulating tube 17 passes through the side wall of the injection part 8 and rotates with the slide plate 18; a plurality of microneedles 19 are installed on the slide plate 18, and the microneedles 19 are all connected to the regulating tube 17; an opening is opened on the side of the injection part 8 away from the regulating tube 17.

[0039] A partition 23 is integrally formed in the injection part 8, and a plurality of fixing parts 20 are integrally formed on the partition 23. The end of the microneedle 19 away from the slide plate 18 passes through the partition 23 and the fixing part 20 adjacent thereto. The design of the fixing part 20 can ensure the depth of contact between the microneedle 19 and the patient's skin, preventing the microneedle 19 from puncturing too deeply and causing discomfort to the patient.

[0040] The slide plate 18 is provided with a plurality of through slots, each of which is provided with a movable plate 21 and a strain gauge 22. The movable plate 21 is integrally formed with the outer wall of one end of the microneedle 19; the strain gauge 22 is in contact with the movable plate 21. The end of the connecting ring 10 away from the opening portion 5 is integrally formed with a bullet-shaped auxiliary portion 6, and the diameter of the auxiliary portion 6 and the connecting ring 10 is consistent with the diameter of the opening portion 5.

[0041] It also includes a camera assembly for assisting the doctor in visualizing the injection, the camera assembly includes a camera 24, and the camera 24 is installed on the side wall of the auxiliary part 6 near the opening; because the patient's vagina needs to be stretched, and the injection part 8 is located at one end of the stretching part 5, the folds of the vaginal wall in contact with the injection part 8 cannot be effectively stretched by the stretching part 5, and therefore the auxiliary part 6 is designed so that the injection part 8 is located between the auxiliary part 6 and the stretching part 5, and the auxiliary part 6 and the stretching part 5 can effectively stretch the folds of the vaginal wall to facilitate injection by the injection assembly.

[0042] During the injection, the inside of the vagina can be photographed in real time through the camera 24, and the photographing information is transmitted to the controller. The controller synchronously images and feeds back to the user based on the image information. The user can intuitively understand the injection situation based on the image information, avoid repeated injections in a certain area or injection omissions, thereby improving the injection efficiency. And with the assistance of the camera 24, the doctor can achieve visual injection, which facilitates the big data and AI evaluation of the injection effect, and then formulates a personalized treatment plan. It also includes a host. The host of this embodiment uses the Demasha 3rd generation water light instrument. The bottom of the support part 4 is integrally formed with a connecting part for connecting the support part 4 to the host. A negative pressure component for conveying negative pressure to the injection component is provided in the host. The negative pressure component is connected to the gap between the partition 23 and the opening through the connecting part. The negative pressure component of this embodiment is far from using the negative pressure principle of the Demasha 3rd generation water light instrument. This principle belongs to the prior art and is not elaborated in this embodiment.

[0043] The holding support part 4 is connected to the main unit through the connecting part; the expansion part 5 and the auxiliary part 6 are inserted into the vagina, and the expansion part 5 and the auxiliary part 6 can expand and flatten the wrinkles of the patient's vaginal wall; the main unit and the telescopic rod 11 are started, and the negative pressure generated in the main unit is transmitted to the gap between the partition 23 and the opening, and the patient's skin is adsorbed at the opening, and the microneedle 19 can puncture the patient's skin; at the same time, the telescopic rod 11 drives the push rod 12 to move, and the push rod 12 drives the piston 14 to move, and the medicine in the syringe 13 is pushed into the injection tube 16, the regulating tube 17 and the microneedle 19 in turn, and the medicine acts on the patient's vaginal wall mucosa through the microneedle 19. Since the skin hardness and elasticity of different areas in the patient's vagina may be slightly different, the injection resistance of the microneedle 19 in different areas may be different; when the resistance is different, the depth of the microneedle 19 inserted into the skin may also be different; if during the intracavitary injection process, the injection force and speed of the microneedle 19 remain unchanged, the injection in the area with higher hardness or lower elasticity will be affected by the resistance, and the injection uniformity will be poorer than that in the area with lower hardness or better elasticity. The difference may be small, but with the vaginal wall as a whole as a reference, the overall uniformity of the injection will be affected. When the microneedle 19 is used to puncture the vaginal mucosal skin of the patient, the microneedle 19 will encounter a certain resistance. Since the movable plate 21 and the microneedle 19 are an integrated structure, when the microneedle 19 feels the resistance, the movable plate 21 will also feel the resistance. The microneedle 19 and the movable plate 21 apply a certain pressing force to the strain gauge 22. When the strain gauge 22 is compressed, its resistance will decrease. The degree to which the strain gauge 22 is compressed is determined by obtaining the degree to which the resistance of the strain gauge 22 decreases. The greater the degree of compression, the greater the resistance encountered by the microneedle 19 during puncture. When the resistance is large, it means that the skin hardness or elasticity at that location is high. Well, the insertion of microneedle 19 may be affected to a certain extent, thereby affecting the injection uniformity of microneedle 19. In order to make the overall injection of the drug solution more uniform, it is necessary to increase the injection force and speed here. At this time, the pushing speed of the telescopic rod 11 can be automatically increased based on the resistance, thereby adjusting the force and speed of microneedle injection; the smaller the compression degree, the smaller the resistance encountered by the microneedle 19 during puncture. When the resistance is small, it means that the skin elasticity in this area is poor. At this time, the normal setting force and speed can be maintained. In this way, the current injection force and speed are automatically adjusted to improve the uniformity of the injection of the drug solution. When a rotary injection is required, start the motor 9, and the motor 9 drives the rotating part 2, the telescopic rod 11, the push rod 12, the syringe 13, the opening part 5, the connecting ring 10 and the injection part 8 to rotate as a whole. The rotation frequency is adjusted according to the actual situation to realize the rotary injection function of the drug; after the injection is completed, clean the vagina, observe the patient's reaction, and ensure that there is no discomfort and complications.

[0044] A switch button 25, a speed-up button 26 and a speed-down button 27 are installed on the top of the support part 4. The switch button 25 is electrically connected to the controller, the motor 9 and the telescopic rod 11. The speed-up button 26 and the speed-down button 27 are both electrically connected to the controller, and the controller is connected to the telescopic rod 11 by signal. When in use, the device can be started by pressing the switch button 25; the injection speed can be adjusted by pressing the speed-up button 26 or the speed-down button 27, without stopping or restarting the device. Flexible operation improves work efficiency and reduces downtime during use; and avoids excessive injection caused by too fast an injection speed or insufficient injection caused by too slow an injection speed, ensures product quality and safety, increases the intelligence of the device, and improves the convenience and operability of using the device.

[0045] A support assembly for supporting the support part 4 is provided on the top of the main unit; the support assembly includes a support arm, which can support and fix the support part 4 to reduce the user's operation intensity; the support arm of this embodiment uses the light guide arm structure of the AcuPulse Beethoven CO2 laser. This embodiment also includes a display, which is connected to the camera signal and is used to display preoperative and postoperative evaluations and intraoperative monitoring.

[0046] Embodiment 2

[0047] The difference between this embodiment and the above-mentioned embodiment lies in that: the connection between the adjustment tube 17 and the injection part 8 is connected by a thread, and the slide plate 18 is slidably matched with the inner wall of the injection part 8; before installing the injection part 8 at the through opening, the operator can adjust the injection length of the microneedle 19 according to the actual situation, specifically: the initial position of the slide plate 18 is located at the far left and contacts with the side wall of the injection part 8. Since the adjustment tube 17 and the injection part 8 are threadedly connected, when the adjustment tube 17 is rotated, the adjustment tube 17 will push the slide plate 18 to move toward the direction close to the partition 23, thereby driving the microneedle 19 to move toward the opening, so that the injection length of the microneedle 19 becomes longer.

[0048] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can know all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the scope of protection of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A visualized intracavitary microneedle injection device, characterized in that: It includes a controller and a support part, one end of the support part is detachably connected to the expansion part; the surface of the expansion part is engraved with scale lines, and a syringe is detachably connected inside the expansion part; a driving component for driving the syringe to deliver medicine and rotate 360° is provided in the support part; a connecting ring is fixedly connected to the end of the expansion part away from the support part, and a through hole is opened on the side wall of the connecting ring, and an injection component for injecting medicine is detachably connected to the through hole; an injection tube is connected to the top of the syringe, and the end of the injection tube away from the syringe passes through the expansion part and is connected to the injection component; the injection tube is detachably connected to the expansion part; it also includes a host, a connecting part for connecting the support part to the host is fixedly connected to the bottom of the support part, a negative pressure component for delivering negative pressure to the injection component is provided in the host, and a support component for supporting the support part is provided on the top of the host; it also includes a camera component for assisting doctors in visualizing injections.

2. The visualized intracavitary microneedle injection device according to claim 1, characterized in that: A piston is vertically slidably fitted in the syringe; the drive assembly includes a motor, which is embedded and installed in the support portion; A cavity is opened in the support part, and a hollow rotating part is rotatably matched in the cavity, and the output shaft of the motor is fixedly connected to the bottom of the rotating part; A telescopic rod is installed in the rotating part, and a push rod is fixedly connected to the output end of the telescopic rod. The end of the push rod away from the telescopic rod passes through the top of the support part and the bottom of the syringe and contacts the bottom of the piston. The push rod is detachably fixedly connected to the bottom of the syringe. The controller is used to control the operation of the motor and the telescopic rod.

3. The visualized intracavitary microneedle injection device according to claim 2, characterized in that: The injection assembly includes an adjusting tube and an injection part, and a slide plate is provided in the injection part; one end of the adjusting tube is connected to the injection tube, and the adjusting tube and the injection tube are connected at a 90° angle, and the other end of the adjusting tube passes through the side wall of the injection part and rotates with the slide plate; a number of microneedles are installed on the slide plate, and the microneedles are all connected to the adjusting tube; an opening is opened on the side of the injection part away from the adjusting tube.

4. The visualized intracavitary microneedle injection device according to claim 3, characterized in that: A partition is fixedly connected inside the injection part, a plurality of fixing parts are fixedly connected on the partition, and one end of the microneedle away from the slide plate penetrates the partition and the fixing parts adjacent to the partition.

5. The visualized intracavitary microneedle injection device according to claim 4, characterized in that: A plurality of through grooves are formed on the slide plate, and movable plates and strain gauges are arranged in the through grooves. The movable plate is fixedly connected with the outer wall of one end of the microneedle; and the strain gauge is in contact with the movable plate.

6. The visualized intracavitary microneedle injection device according to claim 5, characterized in that: One end of the connecting ring away from the expansion part is fixedly connected with a bullet-shaped auxiliary part, and the diameters of the auxiliary part and the connecting ring are consistent with the diameter of the expansion part; the camera assembly includes a camera, which is installed on the side wall of the auxiliary part close to the opening.

7. The visualized intracavitary microneedle injection device according to claim 6, characterized in that: The connection between the regulating tube and the injection part is threaded, and the slide plate is slidably matched with the inner wall of the injection part.

8. The visualized intracavitary microneedle injection device according to claim 7, characterized in that: The negative pressure component is communicated with the gap between the partition plate and the opening through the connecting portion.

9. The visualized intracavitary microneedle injection device according to claim 8, characterized in that: A switch button, a speed-up button and a speed-down button are installed on the top of the support part. The switch button is electrically connected to the controller, the motor and the telescopic rod. The speed-up button and the speed-down button are both electrically connected to the controller. The controller is connected to the telescopic rod signal.

10. The visualized intracavitary microneedle injection device according to claim 9, characterized in that: A plurality of grip grooves are provided on the supporting part.

Images