Handpiece and therapeutic apparatus

Abstract

The utility model discloses a handpiece and a therapeutic apparatus, and relates to the technical field of medical instruments, the handpiece electrically connected with a radio frequency power supply in a therapeutic host comprises a housing, a needle plate and an angle detection unit, and one end of the housing facing the skin is connected with a therapeutic head; the needle plate is arranged in the treatment head, at least one needle electrode is arranged on the needle plate, and the needle electrode penetrates into the skin surface and is electrically connected with a radio frequency power supply to emit RF energy; the angle detection unit is used for detecting the needle inserting angle of the needle electrode, and the needle inserting angle is the included angle between the needle electrode and the skin surface in the process that the needle electrode pierces the skin surface. According to the technical scheme, the angle of the needle body penetrating into the skin is detected, a doctor can adjust the needle inserting angle according to the detection angle, and deviation of the needle inserting angle is avoided.

Description

Technical Field

[0001] This utility model relates to the field of dot carving therapy technology, and in particular to a handheld device and a therapy instrument. Background Technology

[0002] Radiofrequency microneedling is a minimally invasive radiofrequency fractional technology that uses tiny microneedles to precisely deliver radiofrequency (RF) energy to target tissues at different depths. It can be used for facial rejuvenation applications such as skin tightening and scar removal, as well as for the treatment of acne and axillary hyperhidrosis.

[0003] During treatment, the doctor will insert microneedles into the patient's skin and then perform radiofrequency ablation. However, during the process of inserting the microneedles into the patient's skin, the patient may experience muscle tension due to pain, the patient's skin may be tough, or the doctor may habitually lift the needle upwards, which may lead to deviations in the insertion angle, affecting the treatment effect. In some cases, the needle may even bend due to excessive twisting angle, causing pain and damage to the patient. Utility Model Content

[0004] The main purpose of this invention is to provide a handheld device and a treatment instrument that can detect the angle at which the needle penetrates the skin. Doctors can then adjust the needle insertion angle based on the detected angle to avoid deviations in the insertion angle.

[0005] To achieve the above objectives, this utility model proposes a handheld device for skin radiofrequency (RF) thermal effect treatment, which is electrically connected to an RF power supply disposed within the treatment host. The handheld device includes:

[0006] A housing, wherein a treatment head is connected to the end of the housing facing the skin;

[0007] A needle plate, disposed within the treatment head, is provided with at least one needle electrode, the needle electrode being used to pierce the skin surface and electrically connected to the radio frequency power supply to emit RF energy; and

[0008] An angle detection unit is used to detect the insertion angle of the needle electrode, wherein the insertion angle is the angle between the needle electrode and the skin surface during the process of the needle electrode being inserted into the skin surface.

[0009] In one embodiment, the handheld device further includes a display interface disposed on the housing and electrically connected to the angle detection unit. The display interface is used to display the insertion angle of the needle electrode detected by the angle detection unit, so as to adjust the insertion angle in real time and drive the needle electrode to penetrate the subcutaneous tissue to a preset depth.

[0010] In one embodiment, the handheld device further includes a driving component, which is disposed within the housing, and the needle plate is connected to the output end of the driving component;

[0011] The driving component drives the needle plate to move the needle electrode back and forth along the treatment head.

[0012] In one embodiment, the handheld device further includes a controller disposed within the housing. The controller is electrically connected to the drive unit, the needle electrode, and the angle detection unit, respectively. The controller is used to control the drive unit to drive the needle plate to drive the needle electrode to insert into the subcutaneous tissue at different depths.

[0013] In one embodiment, the controller is further configured to receive the needle insertion angle detected by the angle detection unit and control the drive unit to drive the needle plate to drive the needle electrode to insert into the subcutaneous tissue at a preset depth.

[0014] In one embodiment, the housing is further provided with a status indicator light and an output button. The status indicator light and the output button are electrically connected to the controller. The status indicator light is used to indicate the working status of the needle electrode, and the output button is used to receive user commands and control the opening or closing of the electrical connection between the needle electrode and the radio frequency power supply.

[0015] In one embodiment, the handheld device further includes an alarm module electrically connected to the angle detection unit. The alarm module is used to issue an alarm when the detection angle of the angle detection unit exceeds a threshold to prompt the needle to be withdrawn.

[0016] In one embodiment, the angle detection unit is used to detect the initial insertion angle when the needle electrode is inserted into the skin surface and to detect the real-time insertion angle during the process of the needle electrode being inserted into the skin surface. The alarm module is also used to issue an alarm to prompt needle withdrawal when the difference between the real-time insertion angle and the initial insertion angle is greater than a preset deviation angle.

[0017] In one embodiment, the angle detection unit is a tilt sensor, which is arranged perpendicular to the needle plate.

[0018] This utility model also proposes a therapeutic device, which includes a therapeutic host and a radio frequency power supply disposed in the therapeutic host, as well as a handheld device as described above, wherein the handheld device is electrically connected to the radio frequency power supply in the therapeutic host.

[0019] In this invention, the angle detection unit is housed within the casing. When a physician uses the handheld device to treat a patient, the physician holds the device close to the patient's skin and inserts the needle electrode from the treatment head into the skin. During treatment, the angle detection unit on the needle plate can detect the needle electrode's insertion angle in real time. Based on the real-time insertion angle detected by the angle detection unit, the physician can manually insert the needle electrode into the skin, ensuring the insertion angle remains within an appropriate range. This prevents the needle electrode from being inserted into the skin at too large or too small an angle, which could lead to deviations in the treatment position and affect the treatment effect. It also prevents the needle electrode from deflecting during insertion, which could exacerbate the patient's injury, thereby improving the treatment effect of the handheld device. On the other hand, in the treatment process where the insertion depth is automatically controlled based on the selected insertion depth, the needle electrode is located on the needle plate inside the treatment head. Driving the needle plate to move within the treatment head can change the depth at which the needle electrode penetrates the skin. The real-time insertion angle detected by the angle detection unit helps the physician adjust the selected insertion depth in a timely manner, enabling targeted radiofrequency treatment of different dermal depths and improving the treatment effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A perspective structural diagram of the handheld component in one embodiment of this utility model.

[0022] Explanation of icon numbers:

[0023] 100. Handheld component; 1. Housing; 11. Treatment head; 2. Needle plate; 3. Angle detection unit; 4. Display interface; 5. Drive component; 6. Controller; 7. Status indicator light; 8. Output button; 9. Channel.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] In related technologies, during radiofrequency microneedling treatment, the physician inserts microneedles into the patient's skin and then performs the corresponding radiofrequency treatment. However, when the physician manually inserts the microneedles into the patient's skin based on experience, situations may arise such as the patient's muscles tensing due to pain, the patient's own skin being tough, or the physician habitually lifting the needle upwards. These factors can lead to deviations in the insertion angle, affecting the treatment effect, or even the needle bending due to excessive twisting angle. In other words, a lack of necessary experience and / or incorrect operation of the needle insertion depth and / or angle, or even needle malfunction, can cause pain and injury to the patient.

[0029] like Figure 1 As shown, based on the above problems, this utility model proposes a handheld device 100 for skin radiofrequency (RF) thermal effect treatment and electrically connected to an RF power supply disposed in the treatment host. The handheld device 100 includes a housing 1, a needle plate 2, and an angle detection unit 3. The end of the housing 1 facing the skin is connected to a treatment head 21. The needle plate 2 is disposed inside the treatment head 21 and is provided with at least one needle electrode (not shown). The needle plate 2 is adapted to move within the treatment head 21, so that the needle electrode extends out of the treatment head 21, pierces the skin surface, and is electrically connected to the RF power supply to emit RF energy. The angle detection unit 3 is used to detect the insertion angle of the needle electrode, wherein the insertion angle is the angle between the needle electrode and the skin surface during the process of the needle electrode piercing the skin surface.

[0030] In this embodiment, when a physician uses the handheld device 100 to treat a patient, the physician holds the handheld device 100 close to the patient's skin and inserts the needle electrode inside the treatment head 21 into the skin. During the treatment, the angle detection unit 3 can detect the insertion angle of the needle electrode in real time. Based on the real-time insertion angle detected by the angle detection unit 3, the physician can maintain the angle between the needle electrode and the skin surface within an appropriate range when inserting the needle electrode into the skin. This avoids the needle electrode being inserted into the skin at an angle that is too large or too small, which could lead to deviation in the treatment position and affect the treatment effect. It also prevents the needle electrode from deflecting during insertion into the skin, which could aggravate the injury to the patient, thereby improving the treatment effect of the handheld device 100. The needle electrode is located on the needle plate 2 inside the treatment head 21. By changing the position of the needle plate 2 inside the treatment head 21, the length of the needle electrode extending out of the treatment head 21 can be changed, thereby changing the depth of the needle electrode piercing the skin. This allows for layered radiofrequency treatment at different depths, improving the treatment effect.

[0031] It should be noted that the angle detected by the angle detection unit 3 is the relative angle between the axial direction of the needle electrode and the surface of the skin. Therefore, the detection direction of the angle detection unit 3 should be set parallel to the axial direction of the needle electrode. The length of the needle electrode extending out of the treatment head 21 or the depth of insertion into the skin can be adjusted by the doctor manually or by the controller driving the movement of the needle plate 2 within the treatment head 21.

[0032] Optionally, one, two, or more needle electrodes can be set on the needle plate 2, and the specific number of needle electrodes can be set according to the actual treatment needs; when two or more needle electrodes are set, the needle electrodes are arranged in parallel to each other, so that the angle detection unit 3 can detect the insertion angle of all needle electrodes at the same time.

[0033] In one embodiment of this utility model, such as Figure 1 As shown, the handheld device 100 also includes a display interface 4, which is located in the housing 1 and electrically connected to the angle detection unit 3. The display interface 4 is used to display the needle insertion angle detected by the angle detection unit 3, so as to adjust the needle insertion angle in real time and drive the needle electrode to insert into the subcutaneous preset depth.

[0034] In this embodiment, the display interface 4 is electrically connected to the angle detection unit 3 and is used to display the needle insertion angle detected by the angle detection unit 3 in real time. Through the display interface 4, the physician can intuitively see the angle between the needle electrode and the skin surface when it is inserted into the skin, and adjust the insertion angle of the needle electrode in a timely manner or stop the treatment in time according to the angle displayed on the display interface 4, so as to avoid the needle electrode from twisting during the insertion of the skin, which would increase the patient's pain or even cause harm. At the same time, based on the insertion length of the needle electrode and the insertion angle displayed on the display interface 4, when the physician performs treatment manually, the physician can also judge whether the needle electrode has penetrated to the target depth under the skin based on experience and the real-time insertion angle. Therefore, the detection and display of the real-time insertion angle is also helpful for the physician to insert the needle electrode to the preset depth under the skin.

[0035] In actual implementation, the display interface 4 is embedded in the surface of the housing 1 and is detachably connected to the housing 1 by means of a snap-fit ​​structure or screws. The display interface 4 can be a graphical user interface (GUI) display.

[0036] In one embodiment of this utility model, such as Figure 1 As shown, the handheld device 100 also includes a drive unit 5, which is located inside the housing 1, and the needle plate 2 is connected to the output end of the drive unit 5; wherein, the drive unit 5 drives the needle plate 2 to move the needle electrode back and forth within the treatment head 21.

[0037] In this embodiment, the handheld device 100 drives the needle plate 2 via the drive device 5 to move the needle electrode back and forth along the treatment head 21, thereby adjusting the length of the needle electrode extending out of the treatment head 21. This allows the needle electrode to be driven by the drive device 5 to penetrate the skin to different depths, eliminating the need for manual operation based on the physician's experience. The physician can select the insertion depth and / or energy level on the display interface 4 and read the real-time insertion angle on the display interface 4. In this way, the handheld device 100 can automatically drive the needle electrode to different depths of the dermis for layered treatment, preventing the uncertainty of manual operation and improving the treatment effect and accuracy.

[0038] In some embodiments, the drive unit 5 can be set to multiple positions, with different positions corresponding to different depths to which the drive unit 5 drives the needle electrode to penetrate the skin. The physician can select the position to control the different depths to which the needle electrode penetrates the skin, thus achieving layered control of the needle electrode penetration depth. Optionally, the depth to which the drive unit 5 drives the needle electrode to penetrate the skin can also be steplessly adjustable. The physician can select the insertion depth and / or energy level on the display interface 4 to control the operation of the drive unit 5, ensuring that the needle electrode penetrates the skin to a preset depth. During the needle electrode insertion into the skin surface, the physician can read the real-time insertion angle on the display interface 4 and adjust the selected insertion depth and / or energy level accordingly. It is understood that the drive unit 5 is a linear drive mechanism, which can be a combination of a miniature electric cylinder or a motor and guide rail structure; no specific limitations are made here.

[0039] In one embodiment of this utility model, such as Figure 1 As shown, the handheld device 100 also includes a controller 6, which is located inside the housing 1. The controller 6 is electrically connected to the drive unit 5, the needle electrode, and the angle detection unit 3. The controller 6 is used to control the drive unit 5 to drive the needle plate 2 to insert the needle electrode into the subcutaneous layer at least one depth. In this embodiment, the physician can select different needle depth settings on the display interface 4. The controller drives the drive unit 5 to move so that the needle electrode can be inserted into the skin at different depths corresponding to different settings, thereby achieving precise control of radiofrequency layered treatment of the skin.

[0040] Optionally, the controller 6 is also used to receive the needle insertion angle detected by the angle detection unit 3 and control the drive unit to drive the needle plate 2 to drive the needle electrode to insert into the subcutaneous preset depth.

[0041] In this embodiment, when the needle electrode is inserted into the skin at different angles, if the length of the needle electrode inserted into the skin is the same, the depth of the dermal layer reached by different insertion angles will also be different. Therefore, the controller 6 can collect the detection angle of the angle detection unit 3 in real time, and control the drive component 5 to drive the needle plate 2 to extend the needle electrode by a certain length according to the detection angle, thereby adjusting the preset depth of the needle electrode inserted into the dermal layer to achieve layered treatment. The controller 6 can also control whether the needle electrode emits radiofrequency energy. After the needle electrode is inserted into the preset depth of the dermal layer, the physician controls the needle electrode to emit radiofrequency energy for treatment through the controller 6. After the preset treatment time, the physician controls the needle electrode to stop emitting radiofrequency energy through the controller 6.

[0042] In this embodiment, the controller 6 can also be electrically connected to the display interface 4, transmitting the detection angle information of the angle detection unit 3 to the display interface 4 so that the display interface 4 can display the depth of the needle electrode reaching the dermis in real time. Simultaneously, the controller 6 can also transmit relevant treatment information of the needle electrode to the display interface 4, which can also display relevant treatment parameters of the needle electrode, such as treatment radiofrequency intensity, treatment temperature, or treatment time, for physician reference. Correspondingly, the display interface 4 can also be configured as a human-machine interface, through which the threshold parameter of the angle detection unit 3 or the extension length parameter of the needle electrode can be transmitted to the controller 6.

[0043] In one embodiment of this utility model, such as Figure 1 As shown, the housing 1 is also provided with a status indicator light 7 and an output button 8. The status indicator light 7 and the output button 8 are electrically connected to the controller 6. The status indicator light 7 is used to indicate the working status of the needle electrode, and the output button 8 is used to receive user commands and control the opening or closing of the electrical connection between the needle electrode and the radio frequency power supply.

[0044] In this embodiment, the controller 6 can control the illumination of the status indicator 7 according to the working status of the needle electrode. Thus, the status indicator 7 can display the working status of the handheld device 100, allowing the physician to intuitively understand its operation. The physician controls the on / off state of the radiofrequency energy output from the needle electrode via the output button 8. The physician can press and hold the button 8 once or twice to continuously output radiofrequency energy, and release the button 8 to stop the output. This allows the physician to adjust the treatment state and mode of the handheld device 100 according to different treatment needs.

[0045] In practice, physicians may focus on the patient's condition and ignore the information displayed on interface 4 during treatment. The status indicator light 7 can use different colored lights to indicate whether the handheld device 100 is operating normally. For example, when the needle electrode is outputting radiofrequency energy normally, the status indicator light 7 is green; when the needle electrode stops outputting radiofrequency energy, the status indicator light 7 is off. The output button 8 allows the physician to control whether the needle electrode outputs radiofrequency energy. When the physician presses the output button 8, the needle electrode outputs radiofrequency energy; when the physician releases the output button 8, the needle electrode stops outputting radiofrequency energy. Multiple output buttons 8 can be included, which can be used to adjust the detection angle threshold of the angle detection unit 3, adjust the depth of the needle electrode insertion into the skin, control whether the needle electrode outputs radiofrequency energy, and the output level of the needle electrode, etc. Specific functions can be set according to treatment needs and are not specifically limited here.

[0046] In one embodiment of this utility model, such as Figure 1As shown, the handheld device 100 also includes an alarm module (not shown), which is electrically connected to the angle detection unit 3. The alarm module is used to issue an alarm when the detection angle of the angle detection unit 3 exceeds the threshold to prompt the needle to retract.

[0047] In this embodiment, the alarm module is used to alert the physician. The alarm module can set a threshold for the angle detection unit 3. When the physician uses the handheld device 100 to perform treatment, if the detection angle of the angle detection unit 3 exceeds the threshold, the alarm module can emit an alarm sound or flash an alarm light to alert the physician that the insertion angle of the needle electrode has deviated. The physician can then adjust the insertion angle of the needle electrode in time or remove the needle electrode from the skin to avoid causing harm to the patient.

[0048] In another embodiment, the angle detection unit 3 is used to detect the initial needle insertion angle when the needle electrode is inserted into the skin surface and to detect the real-time needle insertion angle during the process of the needle electrode being inserted into the skin surface, and to transmit the initial needle insertion angle and the real-time needle insertion angle data to the controller. The alarm module is also used to issue an alarm to prompt needle withdrawal when the difference between the real-time needle insertion angle and the initial needle insertion angle is greater than a preset deviation angle δ. For example, the preset deviation angle δ has a range of 0 to 90°.

[0049] It should be noted that the alarm module can be a buzzer, an alarm indicator light, or a combination of both; no specific limitation is made here. When the detection angle of the angle detection unit 3 exceeds the threshold or the treatment state of the handheld device 100 is abnormal, the alarm indicator light may flash red, and the buzzer may sound. When the detection angle of the angle detection unit 3 is within the normal range or the treatment state of the handheld device 100 is in the preset state or normal state, the status indicator light 7 may remain on green, and the buzzer may not sound.

[0050] In one embodiment of this utility model, such as Figure 1 As shown, the housing 1 has a mounting groove (not shown) corresponding to the angle detection unit 3, and the angle detection unit 3 is limited to the mounting groove; and / or, the angle detection unit 3 has a connecting hole (not shown), and the housing 1 has a mounting hole (not shown) corresponding to the connecting hole, and the angle detection unit 3 and the housing 1 are connected by screws through the connecting hole and the mounting hole.

[0051] In this embodiment, the angle detection unit 3 is disposed within the mounting groove of the housing 1 to achieve positioning and limiting installation of the angle detection unit 3, ensuring the stability of the angle detection unit 3's position and preventing displacement of the angle detection unit 3 during use of the handheld component 100, which would prevent accurate detection of the angle at which the needle electrode pierces the skin. Simultaneously, the angle detection unit 3 can also be connected to the housing 1 via screws passing through the connecting hole and mounting hole to further ensure the reliability of the angle detection unit 3's installation. Optionally, the included angle detection unit can also be connected to the housing 1 via a snap-fit ​​structure.

[0052] It is understandable that the axial direction of the needle electrode can be set parallel to the axial direction of the housing 1. By setting the angle detection unit 3 in the mounting groove of the housing 1, it is easier to keep the detection direction of the angle detection unit 3 parallel to the axial direction of the housing 1.

[0053] In one embodiment of this utility model, such as Figure 1 As shown, the treatment head 21 is provided with a channel 9 for the needle electrode to extend out, and the cross-sectional area of ​​the channel 9 gradually decreases from the end near the housing 1 to the end away from the housing 1.

[0054] In this embodiment, the needle electrode extends from the treatment head 21 through the channel 9. It is understood that the extension direction of the channel 9 is consistent with the extension direction of the needle electrode, providing guidance and support to prevent bending or displacement. In actual implementation, the channel 9 has a variable cross-section, with a larger cross-sectional area near the housing 1 to facilitate needle electrode entry, and a smaller cross-sectional area away from the housing 1 for guidance and support.

[0055] In one embodiment of this utility model, such as Figure 1 As shown, the angle detection unit 3 is a tilt sensor, which is set perpendicular to the needle plate 2. This setting makes it easier for the detection direction of the angle detection unit 3 to remain parallel to the axis of the housing 1 or the axis of the needle electrode.

[0056] In this embodiment, when the handheld device 100 treats the treatment surface, the treatment surface is approximately horizontal. An angle sensor is used to detect the angle between the needle electrode and the horizontal plane, and further, the angle between the needle electrode and the skin. Since the needle electrode is mounted on the needle plate 2, and the axial direction of the needle electrode is generally perpendicular to the needle plate 2, the angle detection unit 3 is also positioned perpendicular to the needle plate 2 and can move with the needle electrode, making it easier to maintain the detection direction of the angle detection unit 3 parallel to the axial direction of the housing 1.

[0057] Optionally, a negative pressure device may be provided at the end of the treatment head 21, which can adsorb uneven skin onto the same plane to facilitate the insertion of the needle electrode.

[0058] This utility model also proposes a therapeutic device, which includes a treatment host and a handheld component 100. The specific structure of the handheld component 100 is as described in the above embodiments. Since this therapeutic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The handheld component 100 is electrically connected to the treatment host.

[0059] In this embodiment, the physician can input relevant treatment parameters, such as treatment duration, treatment intensity, and treatment depth, into the handheld device 100 through the treatment host. The specific settings can be set according to the needs and are not specifically limited here.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A handheld device for skin radiofrequency (RF) thermal effect therapy, electrically connected to an RF power supply disposed within a treatment host, characterized in that, The handheld piece comprises: a housing, one end of which is connected with a treatment head facing the skin; a needle plate provided in the treatment head, the needle plate being provided with at least one needle electrode for penetrating the skin surface and electrically connecting the RF power source to emit RF energy; and an angle detection unit for detecting the penetration angle of the needle electrode relative to the skin surface during the penetration of the needle electrode into the skin surface.

2. The handpiece of claim 1, wherein, The handheld piece further comprises a display interface provided on the housing and electrically connected with the angle detection unit, the display interface being used to display the penetration angle of the needle electrode detected by the angle detection unit, so as to adjust the penetration angle and the preset depth of the needle electrode penetrating into the subcutaneous tissue in real time.

3. The handpiece of claim 1, wherein, The handheld piece further comprises a driving member provided in the housing, the needle plate being connected to the output end of the driving member; wherein the driving member drives the needle plate to reciprocally move the needle electrode in the treatment head.

4. The handpiece of claim 3, wherein, The handheld piece further comprises a controller provided in the housing, the controller being electrically connected with the driving member, the needle electrode and the angle detection unit, respectively, the controller being used to control the driving member to drive the needle plate to penetrate the needle electrode into the subcutaneous tissue at different depths.

5. The handpiece of claim 4, wherein, The controller is further used to receive the penetration angle of the needle electrode detected by the angle detection unit and control the driving member to drive the needle plate to penetrate the needle electrode into the subcutaneous tissue at the preset depth.

6. The handpiece of claim 4, wherein, The housing is further provided with a state indicating lamp and an output button, the state indicating lamp and the output button being electrically connected with the controller, the state indicating lamp being used to indicate the working state of the needle electrode, and the output button being used to receive the instruction of a user and control the opening or closing of the electrical connection between the needle electrode and the RF power source.

7. The handpiece of any one of claims 1 to 5, wherein, The handheld piece further comprises an alarm module electrically connected with the angle detection unit, the alarm module being used to issue an alarm to prompt the needle to be withdrawn when the detection angle of the angle detection unit exceeds a threshold value.

8. The handpiece of claim 7, wherein, The angle detection unit is used to detect the initial penetration angle of the needle electrode when penetrating the skin surface and detect the real-time penetration angle of the needle electrode during the penetration of the needle electrode into the skin surface, and the alarm module is further used to issue an alarm to prompt the needle to be withdrawn when the difference between the real-time penetration angle and the initial penetration angle is greater than a preset deviation angle.

9. The handpiece of any one of claims 1 to 5, wherein, The angle detection unit is an inclination sensor, the inclination sensor being provided perpendicularly to the needle plate.

10. A therapeutic apparatus, characterized by, The treatment instrument comprises a treatment main machine, an RF power source provided in the treatment main machine, and the handheld piece according to any one of claims 1 to 9, the handheld piece being electrically connected with the RF power source in the treatment main machine.

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