Treatment head

Abstract

The utility model discloses a treatment head, and relates to the technical field of medical instruments, the treatment head comprises a housing, a transmission assembly and a linear transducer, the transmission assembly is arranged in the housing and is suitable for being driven by a driving motor; the linear transducer is arranged in the shell and connected to the transmission assembly, and the linear transducer is used for outputting a focusing area which is linearly arranged in the first direction; wherein the transmission assembly is driven by the driving motor to drive the linear transducer to reciprocate along a second direction, and an included angle is formed between the second direction and the first direction, so that a focus point output by the linear transducer forms a surface-shaped focal region. The technical scheme provided by the utility model aims to enlarge the treatment area of the treatment head and improve the treatment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a treatment head. Background Technology

[0002] In ultrasound treatment of superficial skin tissue, a high-power focused ultrasound transducer is needed to concentrate sound energy into the subcutaneous tissue, creating small coagulative necrosis points in the reticular dermis and subcutaneous tissue. This causes the collagen fibers in the reticular dermis to degenerate and contract, stimulating the tissue to produce new collagen and elastin, thereby achieving cosmetic results.

[0003] However, existing medical aesthetic ultrasound products typically use point-type transducers to perform point-based treatments on users, resulting in a small treatment area and low treatment efficiency. Utility Model Content

[0004] The main purpose of this invention is to provide a treatment head that expands the treatment area and improves treatment efficiency.

[0005] To achieve the above objectives, this utility model proposes a treatment head, the treatment head comprising:

[0006] case;

[0007] A transmission assembly, disposed within the housing and adapted to be driven by a drive motor; and

[0008] A linear transducer, wherein the linear transducer is disposed within the housing and connected to the transmission assembly, the linear transducer being used to output a focusing area arranged linearly along a first direction;

[0009] The transmission component, driven by the drive motor, moves the linear transducer back and forth along a second direction, which is set at an angle to the first direction, so that the focal point output by the linear transducer forms a planar focal region.

[0010] In one embodiment, the treatment head further includes a support connected to the housing, the transmission assembly includes a slider slidably connected to the support, and the linear transducer is mounted on the slider, which can reciprocate relative to the support in the second direction.

[0011] In one embodiment, the transmission assembly further includes a first transmission shaft and a rack, the rack being connected to the slider, the first transmission shaft being adapted to be driven to rotate by the drive motor and to engage with the rack via a first gear.

[0012] In one embodiment, the first gear is a sector gear, and the rack includes a first rack and a second rack disposed opposite to each other on both sides of the first gear, wherein the first gear meshes with the first rack and the second rack in sequence for transmission.

[0013] In one embodiment, the slider is provided with a mounting hole, and the bracket is provided with a sliding shaft extending along the second direction. The sliding shaft passes through the mounting hole so that the slider and the bracket are slidably connected.

[0014] In one embodiment, the slider forms an annular groove, and two sets of opposing strip teeth are provided in the annular groove. The transmission assembly includes a second transmission shaft, which is adapted to be driven to rotate by the drive motor and to mesh with the slider through a second gear.

[0015] In one embodiment, the bracket is provided with a sliding groove extending along the second direction and a limiting protrusion located at the opening of the sliding groove. The slider is slidably limited in the sliding groove and abuts against the limiting protrusion.

[0016] In one embodiment, the transmission assembly includes an eccentric transmission shaft and a connecting piece, the drive motor is connected to a first end of the eccentric transmission shaft, the second end of the eccentric transmission shaft is rotatably connected to the first end of the connecting piece, and the second end of the connecting piece is rotatably connected to the slider;

[0017] The drive motor can drive the eccentric drive shaft to rotate, the second end of the eccentric drive shaft can drive the first end of the connecting piece to rotate eccentrically, and the second end of the connecting piece can drive the slider to slide back and forth along the second direction.

[0018] In one embodiment, the bracket is provided with a strip-shaped hole, one end of the slider is rotatably connected to the connecting piece, and the other end of the slider passes through the strip-shaped hole and is connected to the linear transducer. The strip-shaped hole extends along the second direction.

[0019] In one embodiment, a third gear is mounted on the second end of the eccentric drive shaft, and the third gear is rotatably connected to the second end of the eccentric drive shaft. The transmission assembly also includes an annular internal gear, which is connected to the housing and has annular internal teeth, suitable for meshing and transmitting power with the third gear.

[0020] In the technical solution of this utility model, the housing is used to accommodate the linear transducer, the drive motor is set outside the housing, and drives the linear transducer located inside the housing through the transmission component, so that the linear transducer reciprocates along the second direction. The ultrasonic waves emitted by the linear transducer are focused on a focusing area linearly arranged along the first direction, and the first direction and the second direction are set at an angle. Thus, under the drive of the drive motor, the focusing area output by the linear transducer can form a focal zone, thereby increasing the treatment area of ​​the treatment head and improving the treatment efficiency of the treatment head. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the structure of the treatment head in one embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of the bracket and transmission assembly in one embodiment of this utility model;

[0024] Figure 3 A schematic diagram of the structure of the bracket and transmission assembly in another embodiment of this utility model;

[0025] Figure 4 A schematic diagram of the transmission assembly in another embodiment of this utility model;

[0026] Figure 5 A schematic diagram of the structure of the bracket and transmission assembly in another embodiment of this utility model;

[0027] Figure 6 A structural schematic diagram of the bracket and transmission assembly from another perspective in a further embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the eccentric drive shaft in another embodiment of the present invention.

[0029] Explanation of icon numbers:

[0030] 100. Treatment head; 1. Housing; 11. Sound-transmitting port; 2. Support; 21. Sliding shaft; 22. Sliding through groove; 23. Limiting protrusion; 24. Strip hole; 3. Transmission assembly; 31. Slider; 311. Mounting hole; 312. Annular groove; 313. Strip tooth; 32a. First transmission shaft; 33a. First gear; 34a. Rack; 32b. Second transmission shaft; 33b. Second gear; 32c. Eccentric transmission shaft; 321. First section; 322. Connecting section; 323. Second section; 33c. Third gear; 34c. Annular internal gear; 35c. Connecting piece; 4. Linear transducer.

[0031] 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

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Please refer to the reference. Figures 1 to 7As shown, this utility model proposes a treatment head 100, which includes a housing 1, a transmission assembly 3, and a linear transducer 4. The transmission assembly 3 is disposed inside the housing 1 and is adapted to be driven by a drive motor. The linear transducer 4 is disposed inside the housing 1 and connected to the transmission assembly 3. The linear transducer 4 is used to output a focusing area that is linearly arranged along a first direction. Under the drive of the drive motor, the transmission assembly 3 drives the linear transducer 4 to reciprocate along a second direction. The second direction is set at an angle to the first direction, and the first direction is different from the second direction, so that the focusing point output by the linear transducer 4 forms a planar focal region.

[0036] In this embodiment, the housing 1 houses the linear transducer 4. A drive motor is located outside the housing 1 and drives the linear transducer 4 located inside the housing 1 via a transmission assembly 3, causing the linear transducer 4 to reciprocate along a second direction. The linear transducer 4 emits ultrasonic waves with a focused area linearly arranged along a first direction. This focused area can consist of multiple focal points linearly arranged along the first direction, and can be a linear focal area directly emitted by the linear transducer 4. The first and second directions are angled to form a planar focal region, thus greatly increasing the treatment area of ​​the treatment head 100 and improving its treatment efficiency. It is understood that when the linear transducer 4 moves the same distance along the second direction, the planar focal region area formed by the output of the linear transducer 4 is maximized when the first and second directions are perpendicular.

[0037] In practice, the housing 1 is filled with a sound-conducting medium and has a sound-transmitting port 11. A sound-transmitting membrane is installed at the sound-transmitting port 11, and the guiding medium is used to conduct the ultrasonic waves emitted by the linear transducer 4. During treatment, the end of the housing 1 near the sound-transmitting port 11 is in contact with the patient's skin. Optionally, the first and second directions are parallel to the plane where the sound-transmitting port 11 is located, thus treating the same depth under the patient's skin and ensuring the accuracy of the treatment. The linear transducer 4 can be an ultrasonic transducer in which piezoelectric ceramics are arranged in a tile shape, which can focus ultrasonic waves to form a linear focal spot.

[0038] In embodiments of this utility model, such as Figures 1 to 6 As shown, the treatment head 100 also includes a support 2, which is connected to the housing 1. The transmission component 3 includes a slider 31, which is slidably connected to the support 2. A linear transducer 4 is mounted on the slider 31, and the slider 31 can slide back and forth relative to the support 2 in a second direction.

[0039] In this embodiment, the slider 31 and the support 2 slide in a second direction. During treatment, the drive motor drives the slider 31 to reciprocate along the second direction, and the support 2 guides the slider 31 to ensure that the slider 31 drives the linear transducer 4 to reciprocate in the preset second direction.

[0040] Optionally, the bracket 2 may be provided with a slide rail that extends along the second direction, and the slider 31 is limited within the slide rail and adapted to slide along the slide rail, so that the bracket 2 can guide the slider 31 along the second direction.

[0041] Understandably, the drive motor is generally located on the side of the treatment head 100 facing away from the sound-transmitting port 11. Therefore, the transmission assembly 3 is also generally located inside the housing 1 on the side away from the sound-transmitting port 11 to facilitate connection with the output shaft of the drive motor. The linear transducer 4 is mounted on the transducer bracket 2, which is connected to the slider 31 via an optical axis. This allows the linear transducer 4 to be positioned close to the sound-transmitting port 11 for better treatment results.

[0042] In actual implementation, the bracket 2 is detachably connected to the housing 1, such as by screw connection or snap-fit ​​connection.

[0043] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the transmission assembly 3 also includes a first transmission shaft 32a and a rack 34a. The rack 34a is connected to the slider 31. The first transmission shaft 32a is adapted to be driven by a drive motor to rotate and is driven by a first gear 33a meshing with the rack 34a.

[0044] In this embodiment, one end of the first drive shaft 32a extends out of the housing 1 and is connected to the output shaft of the drive motor. The other end of the first drive shaft 32a is located inside the housing 1 and is provided with a first gear 33a. A rack 34a extending in a second direction is provided on the slider 31, and the first gear 33a meshes with the rack 34a. When the drive motor drives the first drive shaft 32a to rotate, the first drive shaft 32a drives the first gear 33a to rotate. The rack 34a meshing with the first gear 33a moves relative to the first gear 33a in the second direction. Then, the slider 31 connected to the rack 34a drives the linear transducer 4 to move relative to the support 2 in the second direction. In this way, the linear transducer 4 can output a surface focal region. It can be understood that the drive motor is a rotary motor, and the output shaft of the drive motor drives the first drive shaft 32a to rotate forward and backward, thereby realizing the reciprocating movement of the linear transducer 4 in the second direction.

[0045] In practical implementation, the first gear 33a can be a full-tooth gear, and the first gear 33a is fixedly sleeved on the first transmission shaft 32a. When the drive motor drives the first transmission shaft 32a to rotate, the first gear 33a rotates along with the first transmission shaft 32a. Optionally, as follows... Figure 2 As shown, the first drive shaft 32a can be set parallel to the Z-axis, and the first direction and the second direction can be set parallel to the X-axis, Y-axis or other directions perpendicular to the Z-axis.

[0046] In another embodiment of this utility model, reference is made to... Figure 1 As shown, the first transmission shaft 32a is fitted with a first gear, which is a sector gear (not shown), and a rack includes a first rack and a second rack (not shown) arranged opposite to each other on both sides of the first gear. The first gear meshes with the first rack and the second rack in sequence for transmission.

[0047] In this embodiment, a first gear, which is a sector gear, is mounted on the end of the first transmission shaft 32a furthest from the drive motor. A first rack and a second rack are connected to the slider 31, and the first rack and the second rack are arranged opposite each other on both sides of the first gear. The number of teeth on the sector gear can be the same as the number of teeth on the first rack and the second rack. When the drive motor drives the first transmission shaft 32a to rotate, the teeth of the sector gear will first mesh with the first rack, while the sector gear will not mesh with the second rack. As the first transmission shaft 32a rotates, the teeth of the sector gear will disengage from the first rack with which it previously meshed and mesh with the second rack. Thus, as the first transmission shaft 32a rotates, the first gear 33a will alternately mesh with the first rack and the second rack for transmission.

[0048] Understandably, both the first and second racks are arranged along the second direction and are directly opposite each other. In this configuration, the starting end of the first rack is directly opposite the end of the second rack. The drive motor drives the first transmission shaft 32a to rotate unidirectionally. The sector gear first meshes with the first rack from its starting end to its end, and then with the second rack from its starting end to its end, repeating this cycle. This allows the first transmission shaft 32a to drive the slider 31 and the linear transducer 4 to reciprocate along the second direction. In this embodiment, the drive motor drives the first transmission shaft 32a to rotate unidirectionally (forward or reverse) to achieve the reciprocating movement of the linear transducer 4 along the second direction. Simultaneously, this avoids jamming when the slider 31 drives the linear transducer 4 to reciprocate along the second direction, improving the smoothness of the reciprocating movement of the linear transducer 4.

[0049] In one embodiment of this utility model, such as Figure 2 As shown, the slider 31 is provided with a mounting hole 311, and the bracket 2 is provided with a sliding shaft 21 extending in the second direction. The sliding shaft 21 passes through the mounting hole 311 so that the slider 31 and the bracket 2 are slidably connected.

[0050] In this embodiment, the sliding shaft 21 passes through the mounting hole 311 of the slider 31. The sliding shaft 21 moves along the second direction to achieve sliding engagement between the slider 31 and the bracket 2 in the second direction. In this embodiment, the slider 31 can only move along the sliding shaft 21 to ensure that the slider 31 drives the linear transducer 4 to move in the preset second direction.

[0051] Optionally, the cross-section of the sliding shaft 21 can be circular, rectangular, or other regular shapes. The cross-section of the mounting hole 311 is the same in shape and size as the cross-section of the sliding shaft 21. The sliding shaft 21 abuts against the wall of the mounting hole 311 to limit its movement, thereby improving the stability of the slider 31 sliding along the sliding shaft 21. In this embodiment, the cross-section of the sliding shaft 21 is circular to reduce the resistance of the slider 31 sliding along the sliding shaft 21. The sliding shaft 21 includes two shafts, which are spaced apart. Correspondingly, the slider 31 is provided with two mounting holes 311. The two sliding shafts 21 pass through the two mounting holes 311 respectively to prevent the slider 31 from rotating around the sliding shaft 21 and to improve the stability of the slider 31 sliding in the second direction.

[0052] In another embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the slider 31 surrounds to form an annular groove 312, and two sets of oppositely arranged strip teeth 313 are provided in the annular groove 312. The transmission assembly 3 includes a second transmission shaft 32b, which is adapted to be driven by a drive motor to rotate, and is driven by a second gear 33b meshing with the slider 31.

[0053] In this embodiment, two sets of opposing strip teeth 313 are directly disposed within the annular groove 312 of the slider 31, each set of strip teeth 313 extending along a second direction. The second transmission shaft 32b meshes with the two sets of strip teeth 313 sequentially via a second gear 33b. The second gear 33b is an incomplete gear, with only a portion of its outer circumference having teeth. The meshing of the incomplete gear with the two sets of strip teeth 313 is consistent with the meshing process of a sector gear with the first and second racks. Both sets of strip teeth 313 are arranged along the second direction and are directly opposite each other, with the starting end of one set of strip teeth 313 facing the end of the other set. The drive motor drives the second transmission shaft 32b to rotate unidirectionally. The second gear 33b first meshes from the starting end of one set of strip teeth 313 to the end of that set, and then meshes from the starting end of the other set of strip teeth 313 to the end of that set, and so on, thus realizing the reciprocating movement of the slider 31 and the linear transducer 4 along the second direction driven by the second transmission shaft 32b. In this embodiment, the drive motor can realize the reciprocating movement of the linear transducer 4 along the second direction simply by driving the second transmission shaft 32b to rotate in one direction.

[0054] Understandably, two sets of opposing strip teeth 313 are disposed on two opposing sidewalls of the annular groove 312. When one end of the second gear 33b gear set disengages from the end of one set of strip teeth 313, the other end of the second gear 33b gear set meshes with the starting end of the other set of strip teeth 313, thus achieving uninterrupted meshing between the second drive shaft 32b and the slider 31, thereby improving the smoothness of sliding during the reciprocating motion conversion process.

[0055] In actual implementation, the slider 31 in this embodiment includes an incomplete rack and a mounting plate. The incomplete rack has two sets of oppositely arranged strip teeth 313. The mounting plate is connected to one side of the incomplete rack to form an annular groove 312 with the incomplete rack. The mounting plate can be connected to the transducer bracket 2 on which the wired transducer 4 is mounted via an optical axis.

[0056] In another embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the bracket 2 is provided with a sliding groove 22 extending along the second direction and a limiting protrusion 23 located at the opening of the sliding groove 22. The slider 31 is slidably limited in the sliding groove 22 and abuts against the limiting protrusion 23 for limitation.

[0057] In this embodiment, the bracket 2 is slidably connected to the slider 31 via a sliding groove 22. The two ends of the sliding groove 22 are through-holes. The slider 31 passes through one end of the sliding groove 22 and abuts against the groove wall of the sliding groove 22 for limitation. The opening of the sliding groove 22 faces the linear transducer 4. The linear transducer 4 is connected to the slider 31 within the sliding groove 22 via the opening of the sliding groove 22. A limiting protrusion 23 is provided at the opening of the sliding groove 22, which abuts against the slider 31 to limit its movement and prevent the slider 31 from slipping out of the opening of the sliding groove 22.

[0058] In actual implementation, the bottom of the sliding groove 22 is provided with a through hole for the second drive shaft 32b to pass through, so as to extend into the sliding groove 22 and the annular groove 312, and engage with the strip teeth 313 provided on the groove wall of the annular groove 312 through an incomplete gear. Optionally, there are two limiting protrusions 23, which extend from both sides of the sliding groove 22. The two limiting protrusions 23 support the slider 31 to improve the stability of the slider 31 sliding along the sliding groove 22.

[0059] In another embodiment of this utility model, such as Figures 5 to 7As shown, the transmission assembly 3 includes an eccentric transmission shaft 32c and a connecting piece 35c. The drive motor is connected to the first end of the eccentric transmission shaft 32c, the second end of the eccentric transmission shaft 32c is rotatably connected to the first end of the connecting piece 35c, and the second end of the connecting piece 35c is rotatably connected to the slider 31. The drive motor can drive the eccentric transmission shaft 32c to rotate, the second end of the eccentric transmission shaft 32c can drive the first end of the connecting piece 35c to rotate eccentrically, and the second end of the connecting piece 35c can drive the slider 31 to slide back and forth in the second direction.

[0060] In this embodiment, the eccentric rotating shaft 32c, the connecting piece 35c, and the slider 31 form a crank-slider mechanism. Under the drive of the drive motor, the first end of the connecting piece 35c will follow the second end of the eccentric rotating shaft 32c to rotate eccentrically. Under the limiting action of the bracket 2, the slider 31 will be driven by the second end of the connecting piece 35c to move back and forth in the second direction.

[0061] In actual implementation, the eccentric drive shaft 32c includes a first segment 321 and a second segment 323 that are parallel and not coaxial, and a connecting segment 322 that connects the first segment 321 and the second segment 323. The first segment 321 forms the first end of the eccentric drive shaft 32c, and the second segment 323 forms the second end of the eccentric drive shaft 32c. The first segment 321 is suitable for connection with the output shaft of the drive motor. The drive motor drives the first segment 321 to rotate. Correspondingly, the second segment 323 will rotate around the first segment 321. At the same time, the second segment 323 is rotatably connected to the first end of the connecting piece 35c, and the slider 31 is rotatably connected to the second end of the connecting piece 35c. Since the slider 31 and the bracket 2 slide in a second direction, the second end of the connecting piece 35c will also rotate around the first segment 321 under the drive of the drive motor. The slider 31 will reciprocate along the second direction under the drive of the second end of the connecting piece 35c and the limiting action of the bracket 2. In this embodiment, the drive motor can also drive the linear transducer 4 to reciprocate along the second direction by rotating forward or reverse in only one direction.

[0062] Understandably, the first segment 321, connecting segment 322, and second segment 323 are fixedly connected. Optionally, the first segment 321, connecting segment 322, and second segment 323 can be integrally formed. The connecting piece 35c can be rotatably connected to the second segment 323 and the slider 31 via a bearing.

[0063] In another embodiment of this utility model, such as Figure 5 and Figure 6 As shown, the bracket 2 is provided with a strip hole 24, one end of the slider 31 is rotatably connected to the connecting piece 35c, and the other end of the slider 31 passes through the strip hole 24 and is connected to the linear transducer 4. The strip hole 24 is provided to extend along the second direction.

[0064] In this embodiment, the slider 31 is cylindrical, and optionally, the slider 31 is an optical axis. The strip hole 24 extends along the second direction. The slider 31 achieves sliding engagement with the bracket 2 along the second direction through the limiting engagement with the strip hole 24. The strip hole 24 plays a guiding role when the slider 31 moves along the second direction, so that the slider 31 drives the linear transducer 4 to move more smoothly along the second direction.

[0065] In actual implementation, the cross-section of the end of the slider 31 connected to the connecting piece 35c is circular so that the connecting piece 35c can rotate relative to the slider 31. The cross-section of the part of the slider 31 located in the strip hole 24 is rectangular or square. The two sides of the slider 31 abut against the side walls of the strip hole 24 to limit the movement and prevent the linear transducer 4 from rotating and affecting the treatment effect of the treatment head 100.

[0066] In another embodiment of this utility model, such as Figure 5 and Figure 6 As shown, a third gear 33c is mounted on the second end of the eccentric drive shaft 32c. The third gear 33c is rotatably connected to the second end of the eccentric drive shaft 32c. The transmission assembly 3 also includes an annular internal gear 34c, which is connected to the housing 1. The annular internal gear 34c is provided with annular internal teeth and is suitable for meshing and transmitting with the third gear 33c.

[0067] In this embodiment, when the drive motor drives the first end of the eccentric drive shaft 32c to rotate, the second end of the eccentric drive shaft 32c drives the third gear 33c to rotate eccentrically. Since the third gear 33c meshes with the annular internal gear 34c, the third gear 33c will rotate along the annular internal gear 34c and rotate. In this way, the annular internal gear 34c plays a guiding role in the eccentric rotation of the connecting piece 35c driven by the second end of the eccentric drive shaft 32, so as to reduce the resistance of the drive motor driving the eccentric drive shaft 32c to rotate, improve the stability and smoothness of the movement of the transmission component 3, and thus improve the smoothness of the slider 31 driving the linear transducer 4 to move in the second direction.

[0068] In actual implementation, the center of the annular internal gear 34c is collinear with the rotation axis of the eccentric transmission shaft 32c, and the annular internal gear 34c is detachably connected to the housing 1, such as by screw connection or snap-fit ​​connection.

[0069] 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 treatment head, characterized in that, The treatment head comprises: a housing; a transmission assembly arranged in the housing and adapted to be driven by a driving motor; a linear transducer arranged in the housing and connected to the transmission assembly, the linear transducer being configured to output a focusing area arranged linearly in a first direction; wherein the transmission assembly is configured to drive the linear transducer to reciprocate in a second direction under the driving of the driving motor, the second direction being arranged at an angle with the first direction, so that the focusing point output by the linear transducer forms a planar focal region. The treatment head further comprises a support connected to the housing, the transmission assembly comprises a sliding block connected to the support in a sliding manner, and the linear transducer is mounted on the sliding block, the sliding block being configured to reciprocate in the second direction relative to the support.

2. The treatment head of claim 1, wherein, The transmission assembly further comprises a first transmission shaft and a rack, the rack being connected to the sliding block, the first transmission shaft being adapted to be driven to rotate by the driving motor and being configured to be in meshing transmission with the rack via a first gear.

3. The treatment head of claim 2, wherein the first and second treatment heads are configured to be moved in unison. The first gear is a sector gear, the rack comprises a first rack and a second rack arranged opposite to each other on two sides of the first gear, and the first gear is in meshing transmission with the first rack and the second rack in sequence.

4. The treatment head of claim 3, wherein the first and second treatment heads are configured to be moved in unison. The sliding block is provided with a mounting hole, the support is provided with a sliding shaft extending in the second direction, and the sliding shaft is arranged in the mounting hole, so that the sliding block is connected to the support in a sliding manner.

5. The treatment head of claim 3, wherein the first and second treatment heads are configured to be moved in a direction parallel to the longitudinal axis of the treatment head. The sliding block encloses an annular groove, two groups of strip-shaped teeth are arranged in the annular groove in a opposite manner, the transmission assembly comprises a second transmission shaft, the second transmission shaft is adapted to be driven to rotate by the driving motor and is in meshing transmission with the sliding block via a second gear.

6. The treatment head of claim 2, wherein the first and second treatment heads are configured to be moved in a direction parallel to the longitudinal axis of the treatment head. The support is provided with a sliding channel extending in the second direction and a limiting protrusion arranged at the opening of the sliding channel, the sliding block is arranged in the sliding channel and is limited by the limiting protrusion.

7. The treatment head of claim 6, wherein the first and second treatment heads are configured to be moved in unison. The transmission assembly comprises an eccentric transmission shaft and a connecting piece, the driving motor is connected to a first end of the eccentric transmission shaft, a second end of the eccentric transmission shaft is rotatably connected to a first end of the connecting piece, and a second end of the connecting piece is rotatably connected to the sliding block.

8. The treatment head of claim 2, wherein the first and second treatment heads are configured to be moved in a direction parallel to the longitudinal axis of the treatment head. The driving motor is configured to drive the eccentric transmission shaft to rotate, the second end of the eccentric transmission shaft is configured to drive the first end of the connecting piece to rotate eccentrically, and the second end of the connecting piece is configured to drive the sliding block to reciprocate in the second direction. The support is provided with a strip-shaped hole, one end of the sliding block is rotatably connected to the connecting piece, the other end of the sliding block passes through the strip-shaped hole and is connected to the linear transducer, and the strip-shaped hole extends in the second direction.

9. The treatment head of claim 8, wherein the treatment head is configured to be coupled to a treatment device. The second end of the eccentric transmission shaft is provided with a third gear, the third gear is rotatably connected to the second end of the eccentric transmission shaft, the transmission assembly further comprises an annular internal gear, the annular internal gear is connected to the housing, and the annular internal gear is provided with annular internal teeth and is adapted to be in meshing transmission with the third gear.

10. The treatment head of claim 8, wherein the treatment head is configured to be coupled to a treatment device. ​

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