Treatment head and therapeutic apparatus

Abstract

The application discloses a treatment head and a therapeutic instrument, wherein the deformation of the elastic convex part is first transmitted to a target part, and then the movement of the target part is detected by the sensing part. The target part, as a physical structure, is less affected by temperature than air, can stably receive the deformation of the elastic convex part, and avoids force transmission fluctuations caused by temperature. The target part, as an intermediate transmission member, can convert the deformation displacement of the elastic convex part into directional movement of itself in the first direction, rather than directly transmitting force. Therefore, the sensing part detects the displacement of the target part rather than the size of the force, avoids the interference of the stress of the elastic convex part on force transmission, and makes the detection more focused on the effective deformation caused by skin compression. In general, the application utilizes the target part to make a retransmission, so that the sensing between the skin and the sensing part is more accurate, thereby reliably identifying whether the treatment head is in contact with the skin surface.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more particularly to treatment heads and treatment devices. Background Technology

[0002] Nowadays, therapeutic devices are being used more and more widely. Many of these devices require the treatment head to be in close contact with the skin during treatment. Therefore, sensors are inevitably needed to detect whether the treatment head is in close contact with the skin surface.

[0003] In traditional therapeutic devices, sensors are often triggered by the deformation force generated by the compression of the elastic diaphragm protrusion on the treatment head against the human skin. However, since the protrusions on the diaphragm are filled with air, the ambient temperature also affects the deformation of the protrusions. In addition, the arching stress of the protrusions themselves causes the force exerted by the elastic protrusions on the sensor to vary greatly under different environments, resulting in inaccurate detection results. Utility Model Content

[0004] This application provides a treatment head and a treatment device for more accurately identifying whether the treatment head is in contact with the skin surface.

[0005] The first aspect of this application provides a treatment head, comprising:

[0006] A housing, the housing including a treatment surface for adhering to the skin;

[0007] A membrane structure, comprising a membrane body and elastic protrusions, wherein the membrane body is mounted on the treatment surface;

[0008] The target portion is connected to the elastic protrusion and is located on the side of the diaphragm body near the housing. The elastic protrusion is adapted to drive the target portion to move along a first direction.

[0009] A sensing unit is mounted on the housing and is used to detect the movement of the target unit.

[0010] Optionally, the diaphragm structure further includes a first support structure, which is located on the side of the diaphragm body near the housing. The target portion is mounted on the first support structure, and the elastic protrusion is adapted to drive the first support structure to move along the first direction.

[0011] Optionally, the first support structure has an opening groove inside, the opening of the opening groove facing the sensing part, and the target part is installed inside the opening groove.

[0012] Optionally, the first support structure includes a boss that extends into the opening groove and is used to prevent the target part from disengaging from the opening groove.

[0013] Optionally, the target part is mounted on the outside of the first support structure.

[0014] Optionally, the target part has a through hole in the middle, the size of the first support structure is larger than the gap of the through hole, and the target part is sleeved on the outside of the first support structure by an interference fit to prevent the target part from falling off.

[0015] Optionally, the first support structure includes an isolation section for separating the target part from the sensing part during the movement of the target part along a first direction.

[0016] Optionally, the treatment head further includes an elastic support structure located between the sensing part and the diaphragm body, for driving the moved target part to reset.

[0017] Optionally, the treatment head further includes a second support structure, which is mounted on the housing, and the target portion is mounted on the second support structure.

[0018] Optionally, the target portion is bonded to the elastic protrusion.

[0019] Optionally, the target part is a metal probe, and the sensing part is a capacitive sensing circuit board.

[0020] A second aspect of this application provides a therapeutic device comprising: a handle, and a therapeutic head as described in the first aspect or any embodiment thereof.

[0021] As can be seen from the above technical solutions, the embodiments of this application have at least the following advantages:

[0022] Through long-term research, the applicant has discovered that traditional methods directly pair the elastic protrusion as a signal level with the sensing circuit in the treatment head to detect whether the treatment head is in contact with the skin surface. However, the air inside the elastic protrusion is significantly affected by temperature changes (thermal expansion and contraction will change the hardness and deformation characteristics of the protrusion), resulting in large differences in the force transmitted to the sensor under the same skin pressure. In contrast, the embodiment of this application transmits the deformation of the elastic protrusion to the target part first, and then the sensing part detects the movement of the target part. As a solid structure (not filled with air), the physical properties of this target part are far less affected by temperature than air, and it can stably bear the deformation of the elastic protrusion, avoiding force transmission fluctuations caused by temperature. Furthermore, in traditional solutions, the arching stress of the elastic protrusion itself acts directly on the sensor, potentially resulting in a fundamental force even without skin compression. In contrast, the target portion in this embodiment acts as an intermediate conductor, converting the deformation displacement of the elastic protrusion into its own directional movement along a first direction, rather than directly transmitting force. This allows the sensing unit to detect the displacement of the target portion rather than the magnitude of the force, avoiding interference from the elastic protrusion's own stress on force transmission and focusing the detection more intently on the effective deformation caused by skin compression. In summary, this embodiment utilizes the target portion to perform an additional layer of transmission, making the sensing between the skin and the sensing unit more accurate, thereby reliably identifying whether the treatment head is in contact with the skin surface. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of one end face of the treatment head in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of one embodiment of the present application (i.e., the target part is installed inside the first support structure).

[0026] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0027] Figure 4 This is a partially enlarged schematic diagram of another embodiment of this application (i.e., the target part is installed outside the first support structure).

[0028] Figure 5 This is a schematic diagram of another embodiment of the present application (i.e., the ball-bearing target part is installed in the middle area of ​​the first support structure).

[0029] The attached figures are labeled as follows:

[0030] 1. Membrane body; 11. Elastic protrusion; 2. Target part; 3. First support structure; 31. Boss; 32. Isolation part; 4. Sensing part; 5. Treatment surface; 6. Second support structure. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0032] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc. (if present), indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, the terms "first," "second," and "third" are used only for descriptive purposes such as distinguishing similar objects, and should not be construed as indicating or implying relative importance or order.

[0033] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0034] Please see Figure 1 , Figure 2 The first aspect of this application provides an embodiment of a treatment head, which includes: a housing, a diaphragm structure, a target portion 2, and a sensing portion 4; the housing includes a treatment surface 5 for adhering to the skin; the diaphragm structure includes a diaphragm body 1 and an elastic protrusion 11, the diaphragm body 1 being mounted on the treatment surface 5; the target portion 2 is connected to the elastic protrusion 11, the target portion 2 being located on the side of the diaphragm body 1 closer to the housing, and the elastic protrusion 11 being adapted to drive the target portion 2 to move along a first direction; the sensing portion 4 is mounted on the housing and is used to detect the movement of the target portion 2.

[0035] like Figure 1 , Figure 2 As shown, the treatment surface 5 of the treatment head can directly contact human skin. A diaphragm body 1 (which can be called an elastic sheet) can be installed on the treatment surface 5, and four protrusions (i.e., elastic protrusions 11) can be distributed on the diaphragm body 1. These four elastic protrusions 11 can be evenly distributed to receive the deformation force generated by the pressure of contact with the skin surface. Of course, the number and distribution pattern of the elastic protrusions 11 (such as non-uniform distribution) can be determined by the user. In addition, the aforementioned sensing part 4 can specifically refer to the sensing circuit board inside the sensor (such as a capacitive sensor or a resistive sensor), which is not limited here.

[0036] In summary, this embodiment first transmits the deformation of the elastic protrusion 11 to the target part 2, and then the sensing part 4 detects the movement of the target part 2. As a solid structure (not air-filled), the target part 2's physical properties are far less affected by temperature than air, allowing it to stably withstand the deformation of the elastic protrusion 11 and avoid force transmission fluctuations caused by temperature. Furthermore, in conventional solutions, the arching stress of the elastic protrusion itself directly acts on the sensor, potentially resulting in a basic force even without skin compression. In this embodiment, the target part 2, acting as an intermediate conductor, converts the deformation displacement of the elastic protrusion 11 into its own directional movement along the first direction, rather than directly transmitting force. This allows the sensing part 4 to detect the displacement of the target part 2 rather than the magnitude of the force, avoiding interference from the elastic protrusion's own stress on force transmission and focusing the detection more on the effective deformation caused by skin compression. In general, this embodiment utilizes the target part 2 for a second transmission, making the sensing between the skin and the sensing part 4 more accurate, thereby reliably identifying whether the treatment head is in contact with the skin surface.

[0037] Based on the above examples, this application will be further described in detail below, and some specific possible implementation examples will be provided. In practical applications, the implementation content of these examples can be combined or implemented separately as needed according to the corresponding functional principles and application logic, and the specific implementation can be determined according to the actual scenario.

[0038] In some specific examples, the diaphragm structure also includes a first support structure 3, which is located on the side of the diaphragm body 1 near the housing. The target part 2 is mounted on the first support structure 3, and the elastic protrusion 11 is adapted to drive the first support structure to move along a first direction.

[0039] Taking one of the elastic protrusions 11 and the sensing part 4 as an example, which is the sensor circuit board of the sensor, in actual application, when the treatment head is close to the skin surface, the elastic protrusion 11 will be pressed down in the direction of the sensing circuit board, that is, it will undergo elastic deformation (which can be regarded as concave), causing the first support structure 3 connecting the elastic protrusion 11 to swing and press down (i.e., move down). Figure 2 , Figure 3 As shown, the target part 2 can be installed inside the first support structure 3 (which can be regarded as a rocker arm). This target part 2 can be called a sensing probe or conductor, specifically a metal probe. As the first support structure 3 moves down, the signal value between the metal probe and the sensor (specifically, its sensing circuit board) will change. The processor of the sensing circuit board can identify that the treatment head (specifically, the elastic protrusion 11) is in contact with the skin surface through this signal value, thereby triggering the treatment device to output energy to the skin surface (such as outputting ultrasound or light energy for treatment).

[0040] In some examples, it can be set such that if one or more elastic protrusions 11 come into contact with the skin surface, the treatment head (specifically, the elastic protrusion 11) is considered to be in close contact with the skin surface.

[0041] In some examples, the aforementioned signal values ​​may vary depending on the type of sensor. Specifically, the sensor can be any of the following: capacitive sensor, resistive sensor, magnetoelectric sensor, or Hall effect sensor. For example, a capacitive sensor generates a capacitance value, while a resistive sensor generates a resistance value. Furthermore, the diaphragm body 1 (such as a silicone sheet), the elastic protrusion 11, and the first support structure 3 can be integrally formed or separately disposed. For example, the first support structure 3 can also be an elastic structural component (such as a silicone product).

[0042] For example, the target part 2 can be a metal probe, and the sensing part 4 can be a capacitive sensing circuit board. In this case, the sensing probe 3 and the sensing circuit board 4 can be simply compared to the two plates of a capacitor. When the diaphragm structure adheres to the skin, its elastic protrusion 11 (i.e., the arched part) deforms. At this time, the distance between the sensing probe 3 and the sensing circuit board 4 below it changes (the probe does not need to directly contact the capacitive sensor). After the distance changes, the capacitance value changes accordingly. By detecting the change in capacitance value, the adhesion between the treatment head and the skin can be determined (i.e., whether they are in contact). This capacitive solution has high sensitivity and can also isolate the current from contact with the skin, offering significant advantages. Moreover, compared to the solution of "using the skin as one electrode of the capacitor and the capacitive sensing part on the treatment surface as the other electrode," this solution no longer uses the skin as the electrode of the capacitor but instead uses the skin as the external force applied to change the capacitance value. This introduces the dual requirements of satisfying both contact and sufficient contact pressure, resulting in higher detection accuracy and stability.

[0043] Alternatively, a resistive sensor can be selected and designed such that if the target part 2 is pressed and directly contacts the sensing circuit board of the resistive sensor, thus triggering the sensor, it can be determined that the treatment head is in contact with the skin surface; otherwise, it will not be in contact. Of course, it is also possible to have a resistive sensor that "triggers without direct contact with the sensing circuit board," which can be determined on a case-by-case basis and is not limited here.

[0044] As can be seen, in this embodiment of the application, the first support structure 3 connected to the elastic protrusion 11 can transmit the pressure of the elastic protrusion 11 being squeezed by the skin surface to the first support structure 3, and drive the target part 2 installed on the first support structure 3 to move, thereby reducing the vertical height difference between the target part 2 and the sensor, so as to ensure that the sensor can sense the target part 2, thereby identifying whether the treatment head is in contact with the skin surface.

[0045] Furthermore, through research and experimentation, the inventors discovered that the therapeutic device differs in its usage methods (such as stamping mode and sliding mode). Given the errors caused by the traditional therapeutic device's complete reliance on air pressure transmission, the differences arising from different usage methods further exacerbate the inaccuracy of the traditional therapeutic device in detecting whether the treatment head is in close contact with the skin surface. In contrast, the structure of this application embodiment, which adds a first support structure 3, can better achieve pressure transmission, thereby compensating for the pressure differences between the stamping mode and the sliding mode and improving the accuracy of the detection results.

[0046] like Figure 2 As one possible implementation, the first support structure 3 has an opening groove inside, the opening of which faces the sensing part, and the target part is installed inside the opening groove, that is, the first support structure 3 is used to accommodate the target part 2.

[0047] like Figure 3 As shown, further, in some specific examples, the first support structure 3 includes a boss 31 that extends into the interior of the opening slot, and the boss 31 is used to prevent the target part from disengaging from the opening slot.

[0048] like Figure 2 , Figure 3 As shown, the first support structure 3 can be regarded as a hollow boom structure; the target part 2 is recessed inside the boom structure in a form shorter than the height of the boom structure, and the distance between the target part 2 and the sensing part 4 is greater than the distance between the boom structure and the sensor.

[0049] Specifically, since the target part 2 cannot be in prolonged contact with the sensing part 4 during the entire swing process (to avoid frequent misjudgments of the treatment head contacting the skin surface), the target part can be designed to be recessed into the arm when installed inside the boom, ensuring that the requirement of "target part 2 cannot easily contact the sensor's sensing circuit board" is met. In other words, this embodiment of the application can utilize the distance difference between the boom and the target part (near the sensing part) to prevent the target part from directly contacting the sensing part, and the sensor that helps achieve this requirement can be a sensor that does not require direct contact with the probe, such as a capacitive sensor.

[0050] like Figure 4 As shown, as another possible implementation, the target part 2 can be installed on the outside of the first support structure 3.

[0051] Furthermore, in some specific examples, the target part 2 is provided with a through hole in the middle, the size of the first support structure 3 is larger than the gap of the through hole, and the target part 2 is fitted onto the outside of the first support structure 3 by an interference fit to prevent the target part 2 from falling off.

[0052] For example Figure 4 As shown, the target part 2 is sleeved on the outside of the first support structure 3, and the distance between the target part 2 and the sensor is greater than the distance between the first support structure 3 and the sensor. Specifically, the target part 2 can be sleeved on the outside of the first support structure 3 in the form of a sleeve. The protrusion on the bottom surface of the first support structure 3 compared to the bottom surface of the target part 2 can be used to prevent the target part 2 from directly contacting the sensing circuit board, thus meeting the aforementioned requirement that "the target part 2 cannot easily contact the sensing circuit board of the sensor." In other words, the structure of this embodiment can utilize the height difference between the target part 2 and the first support structure 3 itself to achieve the general requirement that the target part 2 cannot directly contact the sensing circuit board 4.

[0053] Alternatively, the target part 2 and the first support structure 3 can be connected by a matching tongue-and-groove structure (such as a mortise and tenon joint). Specifically, the matching grooves and protrusions can be provided as needed on the mating surfaces of the target part 2 or the first support structure 3. The depth and shape of the grooves can be determined according to the actual situation and are not limited here. Alternatively, the target part 2 and the first support structure 3 can be connected by other intermediaries (such as adhesives or screws), and there are no specific limitations.

[0054] like Figure 4 As shown, in order to meet the above requirement that "the target part 2 cannot easily contact the sensor's sensing circuit board 4", in some specific examples, the first support structure 3 may include an isolation part 32, which is used to separate the target part 2 from the sensing part 4 during the movement of the target part 2 along the first direction.

[0055] To ensure the accuracy of each test result and meet the user's requirement for repeated use of the treatment head, a reset structure can be introduced to achieve the reset and reuse requirement after displacement. Therefore, in some specific examples, the treatment head may also include an elastic support structure (not shown in the figure). The elastic support structure is located between the sensing part 4 and the diaphragm body 1 and is used to drive the moved target part to achieve reset.

[0056] In some specific examples, the target part 2 is cylindrical in shape (see...). Figure 2 ) or sphere (see Figure 5 (or irregular shapes, the specifics of which can be determined by the user.)

[0057] In some specific examples, a slot is provided in the middle region of the first support structure 3 to accommodate the target part 2, and the target part 2 is mounted in the middle region of the first support structure 3 through the slot.

[0058] like Figure 5 As shown, the target part 2 can be a ball-shaped sphere. This ball can be installed in the middle area of ​​the ball support (i.e., the first support structure 3) and covered by the elastic protrusion 11 at the top. It can be regarded as the top diaphragm body 1 (or top silicone sheet) having four evenly distributed spherical arches (i.e., elastic protrusions 11). The sensing part can be installed on the sensor support to ensure that there is a height difference (or gap) between the ball and the sensing part. The outer shell covers all the parts. When the entire treatment head comes into contact with the human skin and generates a slight pressure, the elastic protrusion 11 will press down and drive the ball it covers to move down, so that the aforementioned gap is reduced. The signal (such as capacitance or resistance value) between the ball and the sensor changes accordingly. The sensor processor can use this signal value to determine whether the treatment head is in contact with the skin surface. Specifically, it can be determined by the relationship between the current sensed signal value and the contact signal threshold.

[0059] In some specific examples, in order to more stably enclose or support the aforementioned ball-bearing target part 2 and prevent the target part 2 from becoming unbalanced and falling after being compressed, the treatment head of this application embodiment may also include a second support structure 6, the second support structure 6 being mounted on the housing, and the target part 2 being mounted on the second support structure 6.

[0060] like Figure 5 As shown, a second support structure 6 can be added to stabilize the target part 2. This second support structure 6 has a vertical distance from the sensor, and the second support structure 6 can assist the first support structure 3 in clamping the target part 2.

[0061] like Figure 5As shown, both the top silicone sheet (i.e., the first support structure 3) and the bottom silicone sheet (i.e., the second support structure 6) have arc-shaped arched portions that enclose the ball bearing. When the entire treatment head comes into contact with the human body and generates slight pressure, the arc-shaped arch of the top silicone sheet transmits the pressure to the ball bearing, which in turn transmits the pressure to the arc-shaped depression of the bottom silicone piece (relative to the elastic protrusion of the top silicone sheet). When the pressure reaches a certain value, the arc-shaped depression of the bottom silicone piece directly depresses onto the resistive sensor (which can be considered as direct contact), thereby directly triggering the resistive sensor. Regardless of whether the treatment head is in stamping or sliding mode, the combination of protrusions and depressions to enclose the ball bearing provides good pressure transmission. When the treatment head leaves the human skin, the depression of the bottom silicone sheet can recover its deformation, causing the resistive sensor to stop triggering. The sensor's processor can accurately determine whether the treatment head is in contact with the human skin by judging the difference between the resistance value generated during triggering and the resistance value generated when triggering stops.

[0062] Figure 5 The arc-shaped recessed portion of the bottom silicone sheet (i.e., the second support structure 6) shown above can be considered as enclosing the ball without any cuts. However, in some specific examples, a cut can be made in the second support structure 6 near the sensing circuit board. The diameter of the cut is less than or equal to the width of the target portion 2, and the cut is used to allow the sensing circuit board to sense the distance to the target portion 2. In other words, under the premise of stably enclosing or supporting the ball, it is possible to... Figure 5 The bottom arc-shaped recessed portion shown has a cut, so that even if the arc-shaped recessed portion or the ball does not directly contact the pressure sensor (such as a capacitive sensor), it can still sense the distance change of the target part 2, thereby determining whether the treatment head is in contact with human skin, or in other words, satisfying the above requirement that "the target part 2 cannot easily contact the sensor's sensing circuit board".

[0063] It should be noted that, in some specific examples, the target portion 2 can be bonded to the elastic protrusion 11. The second support structure 6 can be made of any of the following materials: silicone sheet, nitrile rubber, or natural rubber, as required. The materials used for the first support structure 3 and the second support structure 6 can be the same or different.

[0064] In summary, as Figure 5 As shown, the structure of this application embodiment can utilize the upper and lower parts of the second support structure 6 (i.e., the first support structure 3 and the second support structure 6) to enclose the ball in a concave-convex manner to achieve pressure transmission. That is, the ball is used to fill the arched part of the second support structure 6, and the ball can roll freely, thereby compensating for the pressure difference generated by the stamping mode and the sliding mode, so as to more accurately determine whether the treatment head is in contact with the human skin.

[0065] The second aspect of this application provides an embodiment of a therapeutic device, which includes a handle and a therapeutic head as described in the first aspect or any embodiment of the first aspect; for details, please refer to the relevant description of the first aspect above, which will not be repeated here.

[0066] In some examples, when there are multiple locations for the target portion 2 and the first support structure in a single treatment head, this combination can be... Figure 3 , Figure 4 and Figure 5 The structures shown in any figure, namely the first support structure 3 and the target part 2, may have the same or different compositions and positional relationships, which can be determined by the user.

[0067] It should be noted that, for example Figures 2 to 4 As described above, in this embodiment of the application, the treatment head can use the elastic protrusion 11 of the top diaphragm body 1 (such as a silicone sheet) to drive the lower arm (i.e., the first support structure 3). A metal probe (or a sensing sleeve installed on the outside of the arm) is installed inside the arm as the target part 2. Initially, the arm and the sensing area of ​​the lower sensing circuit board (i.e., the sensing part) are kept at a certain distance. When the elastic protrusion is squeezed, the arm moves down and approaches the sensing area of ​​the sensing circuit board, causing the signal (such as capacitance value) between the target part 2 and the sensing circuit board to change, thereby triggering the sensor's processor and software algorithm to work, that is, to identify whether the treatment head is in contact with the skin surface.

[0068] For example Figure 5 As described above, in this embodiment, the treatment head may include a first support structure 3 (with a ball bearing as the target part 2) and a sensor circuit board as the sensing part 4, with a second support structure 6 disposed between the first support structure 3 and the sensor. When the treatment head approaches the skin, as it gradually adheres to the skin, the second support structure 6 with the ball bearing moves towards the sensing circuit board. During this movement, the second support structure 6 (such as a silicone sheet) deforms, and the ball bearing moves towards the sensing circuit board, thereby changing the sensor's signal (which may be a change in capacitance or a deformation signal generated by the sensor itself), thus detecting whether the treatment head is in contact with the skin.

[0069] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them.

Claims

1. A treatment head, characterized in that, include: A housing, the housing including a treatment surface for adhering to the skin; A membrane structure, comprising a membrane body and elastic protrusions, wherein the membrane body is mounted on the treatment surface; The target portion is connected to the elastic protrusion and is located on the side of the diaphragm body near the housing. The elastic protrusion is adapted to drive the target portion to move along a first direction. A sensing unit is mounted on the housing and is used to detect the movement of the target unit.

2. The treatment head according to claim 1, characterized in that, The diaphragm structure further includes a first support structure, which is located on the side of the diaphragm body near the housing. The target portion is mounted on the first support structure, and the elastic protrusion is adapted to drive the first support structure to move along the first direction.

3. The treatment head according to claim 2, characterized in that, The first support structure has an opening groove inside, the opening of which faces the sensing part, and the target part is installed inside the opening groove.

4. The treatment head according to claim 3, characterized in that, The first support structure includes a boss that extends into the opening groove and is used to prevent the target part from disengaging from the opening groove.

5. The treatment head according to claim 2, characterized in that, The target part is installed on the outside of the first support structure.

6. The treatment head according to claim 5, characterized in that, The target part has a through hole in the middle. The size of the first support structure is larger than the gap of the through hole. The target part is fitted onto the outside of the first support structure by an interference fit to prevent the target part from falling off.

7. The treatment head according to claim 2, characterized in that, The first support structure includes an isolation section for separating the target part from the sensing part during the movement of the target part along a first direction.

8. The treatment head according to claim 2, characterized in that, The treatment head also includes an elastic support structure located between the sensing part and the diaphragm body, which is used to drive the moved target part to reset.

9. The treatment head according to claim 1, characterized in that, The treatment head also includes a second support structure, which is mounted on the housing, and the target part is mounted on the second support structure.

10. The treatment head according to claim 1, characterized in that, The target portion is bonded to the elastic protrusion.

11. The treatment head according to claim 1, characterized in that, The target part is a metal probe, and the sensing part is a capacitive sensing circuit board.

12. A therapeutic device, characterized in that, Includes a handle and a treatment head as described in any one of claims 1 to 11.

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