System and method for precision control

Abstract

Disclosed are a system and method for precision control for use in a microneedle therapeutic device. The microneedle therapeutic device comprises a body, a handle, and at least one replaceable treatment head detachably connected to the handle. The treatment head comprises a needle assembly. The needle assembly has a treatment state in which the needle assembly is exposed on a treatment end face of the treatment head and an initial state in which the needle assembly is retracted below the treatment end face of the treatment head. The system is characterized by comprising a driving module, a control module, and an information storage module. The driving module is in driving connection with the needle assembly, such that the needle assembly can switch between the treatment state and the initial state. The control module is electrically connected to the driving module so as to control the driving module to drive the needle assembly. One information storage module is arranged on one treatment head, and each information storage module is configured for recording an error value of the treatment head. The technical scheme of the present application is intended to provide a system for precision control to improve the treatment precision of microneedle treatment heads.

Description

Precision control system and method

[0001] This application claims priority to Chinese patent application No. 202311799030.9 filed on December 25, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of medical device technology, and in particular to a precision control system and method for a microneedle therapy head. Background Art

[0003] Radiofrequency microneedle technology uses tiny microneedles to inject high-energy radiofrequency energy into target groups at different depths, thereby promoting the reorganization and regeneration of collagen. It can be used for facial rejuvenation applications such as skin tightening and scar removal, and can also be used for acne treatment and axillary hyperhidrosis treatment.

[0004] However, due to assembly errors during the production of the microneedle treatment head, or errors in welding the microneedles to the needle plate, the extended length of the microneedles may be different from the expected length, which will have a certain impact on the treatment effect. Technical issues

[0005] The main purpose of this application is to provide a precision control system for use in a microneedle therapy device, aiming to improve the treatment accuracy of the microneedle therapy device. Technical Solutions

[0006] To achieve the above-mentioned purpose, the precision control system proposed in this application is applied to a microneedle therapeutic instrument, which includes a handle and at least one treatment head detachably connected to the handle and replaceable, the treatment head including a needle assembly, the needle assembly having a treatment state exposed on the treatment end face of the treatment head and an initial state retracted from the treatment end face of the treatment head, and is characterized in that the precision control system includes a driving module, a control module and an information storage module, the driving module drives the needle assembly to switch the needle assembly between the treatment state and the initial state; the control module is electrically connected to the driving module to control the driving module to drive the needle assembly; an information storage module is provided on one of the treatment heads, and the information storage module is used to record an error value of the treatment head.

[0007] In one embodiment of the present application, the precision control system further includes an information reading module, which is disposed on the handle or the host. The information reading module is communicatively connected to the information storage module and obtains the error value.

[0008] In one embodiment of the present application, the information reading module is electrically connected to the control module, so that the control module receives the error value, and the control module controls the driving module according to the error value.

[0009] The present application also proposes a precision control method, which is applied to the precision control system described above, and the precision control method comprises the following steps:

[0010] Obtaining a preset treatment depth of the microneedle therapeutic device;

[0011] Obtaining an error value of the treatment head;

[0012] The moving distance of the needle assembly is adjusted according to the preset treatment depth and the error value.

[0013] In one embodiment of the present application, the step of obtaining the error value of the treatment head specifically includes:

[0014] The control module controls the driving module to move a distance corresponding to the preset treatment depth;

[0015] Measuring the length from the needle tip of the needle assembly to the treatment end surface;

[0016] The difference between the length value and the preset treatment depth is calculated as the error value.

[0017] In one embodiment of the present application, the step of measuring the length from the needle tip of the needle assembly to the treatment end surface specifically includes:

[0018] The needle assembly includes a plurality of microneedles, and the length of the longest microneedle exposed on the treatment end surface is measured as the length value.

[0019] In one embodiment of the present application, the step of adjusting the moving distance of the needle assembly according to the preset treatment depth and the error value specifically includes:

[0020] If the error value does not exceed the stroke length of the needle assembly, controlling the needle plate to move toward or away from the treatment surface of the treatment head by a distance equal to the error value;

[0021] If the error value exceeds the stroke length of the needle assembly, it is a defective product.

[0022] In one embodiment of the present application, before the step of obtaining the preset treatment depth of the microneedle therapeutic apparatus, the method further includes:

[0023] The needle assembly further includes a needle plate, one end of each of the microneedles being disposed on the needle plate;

[0024] Obtaining needle length errors between the microneedles;

[0025] If the needle length error is greater than 0.5 mm, it is considered a defective product.

[0026] In one embodiment of the present application, the step of obtaining the needle length error values ​​between the plurality of microneedles specifically includes:

[0027] The distances from the longest needle tip and the shortest needle tip of the microneedles to the needle plate are measured respectively, and the difference between the two is the needle length error value.

[0028] In one embodiment of the present application, the step of determining that the needle is a defective product if the needle length error value is greater than 0.5 mm specifically includes:

[0029] If the needle length error value is greater than 0.15mm, it is a defective product. Beneficial effects

[0030] The precision control system proposed in the technical solution of this application is applied to a microneedle therapeutic device. The microneedle therapeutic device includes a handle and a treatment head. The treatment head includes a needle assembly. The needle assembly has a treatment state in which it is exposed from the treatment head and an initial state in which it is retracted from the treatment head. A drive module drives the needle assembly and is connected to the needle assembly. The drive module can accurately drive the needle assembly to a preset position. The drive module can achieve reciprocating motion of the needle assembly in a straight line, thereby switching the needle assembly between the treatment state and the initial state, thereby achieving skin penetration treatment of the microneedles of the microneedle therapeutic device. The control module is electrically connected to the drive module and the information storage module, and can obtain the error value stored in the information storage module. The control module first obtains a base value for the required movement of the needle assembly based on the treatment depth, and then corrects it using the error value to obtain the final required distance of the needle assembly. The control module can then accurately control the movement distance of the needle assembly through the drive module, thereby correcting the length of the needle assembly exposed from the treatment head, that is, the length of the needle assembly exposed from the treatment end surface is consistent with the expected treatment depth, thereby improving the treatment accuracy of the microneedle therapeutic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] FIG1 is a flow chart of an embodiment of a precision control method of the present application;

[0033] FIG2 is a flow chart of another embodiment of the precision control method of the present application;

[0034] FIG3 is a flow chart of another embodiment of the precision control method of the present application;

[0035] FIG4 is a flow chart of another embodiment of the precision control method of the present application;

[0036] FIG5 is a flow chart of yet another embodiment of the precision control method of the present application;

[0037] FIG6 is a flow chart of yet another embodiment of the precision control method of the present application.

[0038] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0039] Implementation Methods of the Application

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0043] The present application proposes a precision control system, which is applied to a microneedle therapeutic device. The microneedle therapeutic device includes a main unit, a handle, and at least one treatment head that is detachably connected to the handle and replaceable. The treatment head includes a needle assembly, and the needle assembly has a treatment state exposed at the treatment end face of the treatment head and an initial state retracted at the treatment end face of the treatment head. The precision control system includes a drive module, a control module, and an information storage module. The drive module drives the connected needle assembly to switch the needle assembly between the treatment state and the initial state; the control module is electrically connected to the drive module to control the drive module to drive the needle assembly; an information storage module is provided on a treatment head, and an information storage module is used to record the error value of a treatment head.

[0044] In this embodiment, the drive module can be a push rod and motor combination, or another drive assembly and push rod combination, as long as the drive module can drive the needle plate to move together. The specific choice of drive module is not further specified in this application. The control module is communicatively connected to the drive module and can control the extension and retraction of the drive module, thereby controlling the extension and retraction of the needle plate and even the plurality of microneedles. The control module can be a computer or other processor, which is not further specified in this application. Of course, in other embodiments, the control module and the drive module can also be connected by wire to control the extension and retraction of the drive module. The information storage module can be a chip or other component capable of storing and reading information. Each treatment head is equipped with an information storage module. Because the error value of each treatment head is not exactly the same, each treatment head is equipped with an information storage module that records the error value of the treatment head. When a new treatment head is replaced on the handle, it can help the operator quickly obtain the error of the treatment head and adjust the movement distance of the needle plate.

[0045] The precision control system proposed in the technical solution of this application is applied to a microneedle therapeutic device. The microneedle therapeutic device includes a handle and at least one treatment head detachably connected to the handle and replaceable. The treatment head includes a needle assembly, which has a treatment state in which the needle assembly is exposed from the treatment head and an initial state in which the needle assembly is retracted from the treatment head. A drive module drives the needle assembly and is connected to the needle assembly. The drive module can accurately drive the needle assembly to a preset position. The drive module can achieve reciprocating motion of the needle assembly in a straight line, thereby switching the needle assembly between the treatment state and the initial state, thereby achieving skin penetration treatment by the microneedles of the microneedle therapeutic device. A control module is electrically connected to the drive module and an information storage module, and can obtain an error value stored in the information storage module. The control module first obtains a base value for the required movement of the needle assembly based on the treatment depth, and then corrects it using the error value to obtain the final required movement distance of the needle assembly. The drive module can then accurately control the movement distance of the needle assembly, thereby correcting the length of the needle assembly exposed from the treatment head so that the length of the needle assembly exposed from the treatment end surface is consistent with the desired treatment depth, thereby improving the treatment accuracy of the microneedle therapeutic device.

[0046] In one embodiment of the present application, the precision control system further includes an information reading module, which is disposed on the handle or the host. The information reading module is communicatively connected to the information storage module and obtains the error value.

[0047] In this embodiment, an information reading module is provided on the handle. When the handle is connected to the treatment head, the information reading module abuts and is electrically connected to the information storage module, and can read the error value recorded in the information storage module. It can be displayed or broadcast to the operator, so that the operator can quickly obtain the error value information corresponding to the treatment head.

[0048] In one embodiment of the present application, the information reading module is electrically connected to the control module, so that the control module receives the error value, and the control module controls the driving module according to the error value.

[0049] In this embodiment, the information reading module is electrically connected to the control module. The information reading module can transmit the error value read from the information storage module to the control module. The processor of the control module can directly control the extension distance of the driving module according to the received error value, and then adjust the length of the needle plate and even several microneedles exposed on the treatment head, without the need for secondary operation by the operator, saving time.

[0050] The present application also proposes a precision control method, which is applied to the precision control system described above. Referring to FIG1 , the precision control method includes the following steps:

[0051] Step S1: obtaining a preset treatment depth of the microneedle therapeutic device;

[0052] Step S2: obtaining an error value of the treatment head;

[0053] Step S3: adjusting the moving distance of the needle assembly according to the preset treatment depth and the error value.

[0054] In this embodiment, in step S1, the preset treatment depth of the microneedle therapy device is obtained. Without considering errors, the preset treatment depth is the length of the needle assembly protruding from the treatment head. The preset treatment depth is set to at least reach the dermis of the skin tissue. However, due to natural errors in the assembly process of the treatment head or the materials used to produce the treatment head, the preset treatment depth and the length of the needle assembly protruding from the treatment head may not actually be equal. In step S2, the error value of the treatment head is obtained. Errors occur during the assembly process of the treatment head or are naturally present in the materials used to produce the treatment head. Therefore, the error value varies for each treatment head, so it is necessary to obtain the error value of the treatment head currently in use. In step S3, based on the obtained preset treatment depth and error value, the movement of the needle plate is adjusted so that the adjusted length of the needle assembly protruding from the treatment head equals the preset treatment depth.

[0055] In one embodiment of the present application, as shown in FIG2 , the step S2 of obtaining the error value of the treatment head specifically includes:

[0056] Step S21: the control module controls the driving module to move a distance corresponding to the preset treatment depth;

[0057] Step S22: measuring the length from the needle tip of the needle assembly to the treatment end surface;

[0058] Step S23: Calculate the difference between the length value and the preset treatment depth as the error value.

[0059] In this embodiment, a preset treatment depth is first set. At this time, the preset treatment depth can be set to any length. The purpose is to calculate the error value of the treatment head, and it does not need to be set according to the user's treatment needs; then the needle assembly is moved a distance equal to the preset treatment depth, so that the needle assembly is exposed from the treatment head, and the length value of the needle assembly exposed from the treatment head is measured. The length value is the position that the needle assembly can reach for treatment; finally, the difference between the preset length and the length value is calculated as the error value of the treatment head. When the treatment head is used for subsequent treatment, the distance moved by the needle assembly can be corrected according to the calculated error value, and then the treatment length of the needle assembly exposed from the treatment head can be corrected.

[0060] Referring to FIG. 3 , in one embodiment of the present application, the step S22 of measuring the length from the needle tip of the needle assembly to the treatment end surface specifically includes:

[0061] Step S221: The needle assembly includes a plurality of microneedles, and the length of the longest microneedle exposed on the treatment end surface is measured as the length value.

[0062] In this embodiment, because most existing microneedle therapeutic devices utilize a multi-microneedle treatment head, which can achieve a planar therapeutic effect, when measuring the lengths of multiple microneedles, the length of the longest microneedle exposed above the treatment surface of the treatment head should be used as the length of the microneedle exposed above the treatment head. This reflects the deepest level of treatment that this therapeutic device can achieve.

[0063] In one embodiment of the present application, with reference to FIG4 , the step S3 of adjusting the moving distance of the needle assembly according to the preset treatment depth and the error value specifically includes:

[0064] Step S31: If the error value does not exceed the stroke length of the needle assembly, controlling the needle plate to move toward or away from the treatment surface of the treatment head by a distance equal to the error value;

[0065] Step S32: If the error value exceeds the stroke length of the needle assembly, it is considered a defective product.

[0066] In this embodiment, a determination is first made as to whether the error value is within an allowable range. If so, a determination is then made as to whether the error value is greater than zero. If the error value is greater than zero, this indicates that the error value of the treatment head causes the length of the needle assembly protruding from the treatment head to be less than the target length of needle assembly movement. In this case, the needle assembly needs to be controlled to continue moving by a distance equal to the error value, thereby making the length of the needle assembly protruding from the treatment head equal to the target length. If the error value is less than zero, this indicates that the error value of the treatment head causes the length of the needle assembly protruding from the treatment head to be greater than the target length of needle assembly movement. In this case, the needle assembly needs to be controlled to retract a distance equal to the error value, thereby making the length of the needle assembly protruding from the treatment head equal to the target length. If the error value is zero, this indicates that the error of the treatment head is negligible and no correction or adjustment is required. If the error value is not within the allowable range, this indicates that the error value cannot be compensated by extending or retracting the drive module. In this case, the microneedle treatment head should be deemed unqualified and cannot meet the requirements for use.

[0067] In one embodiment of the present application, as shown in FIG5 , before the step S1 of obtaining the preset treatment depth of the microneedle therapeutic apparatus, the method further includes:

[0068] Step S01: The needle assembly further includes a needle plate, and one end of a plurality of the microneedles is disposed on the needle plate;

[0069] Step S02: obtaining needle length errors between a plurality of microneedles;

[0070] Step S03: If the needle length error is greater than 0.5 mm, the needle is considered a defective product.

[0071] In this embodiment, since several microneedles need to be connected to the needle assembly by welding and conduct electricity through the solder joints to achieve the heating effect of the microneedles, needle length errors will appear when several microneedles are welded to the needle assembly, resulting in different heights of microneedles on the same needle assembly, and long needles and short needles will appear. The length difference between the long needles and the short needles is the needle length error value. The needle assembly with a needle length error value within 0.5mm is a qualified product and can enter the assembly process. The needle assembly with a needle length error value exceeding the allowable range is an unqualified product and needs to be reprocessed or eliminated and discarded.

[0072] In one embodiment of the present application, in conjunction with FIG6 , the step S02 of obtaining the needle length error values ​​between the plurality of microneedles specifically includes:

[0073] Step S021: measuring the distances from the longest needle tip and the shortest needle tip of the microneedles to the needle plate respectively, and the difference between the two is the needle length error value.

[0074] In this embodiment, the length between the longest needle tip and the needle plate among the plurality of microneedles and the length between the shortest needle tip and the needle plate among the plurality of microneedles are measured, and the difference between the two lengths is calculated as the needle length error value.

[0075] Referring again to FIG. 6 , in one embodiment of the present application, if the needle length error value is greater than 0.5 mm, the step S03 of determining the needle as a defective product specifically includes:

[0076] Step S031: If the needle length error is greater than 0.15 mm, the needle is considered unqualified.

[0077] Preferably, the needle length error does not exceed 0.15 mm, which can further improve the treatment accuracy of the microneedle therapeutic device.

[0078] The above describes the embodiments of the present application, but those skilled in the art should be aware that the present application is not limited to the above embodiments. The above embodiments are merely examples, and within the scope of the technical solution of the present application, embodiments having substantially the same structure as the technical idea and exerting the same effects are all included in the technical scope of the present application. In addition, without departing from the scope of the subject matter of the present application, other methods of constructing the embodiments by applying various modifications that can be conceived by those skilled in the art and combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A precision control system is applied to a microneedle therapeutic apparatus. The microneedle therapeutic apparatus includes a main body, a handle, and at least one treatment head that is detachably and replaceably connected to the handle. The treatment head includes a needle assembly. The needle assembly has a treatment state in which it is exposed on the treatment end face of the treatment head and an initial state in which it retracts into the treatment end face of the treatment head. It is characterized in that, The precision control system includes: A driving module, which is drivingly connected to the needle assembly to switch the needle assembly between the treatment state and the initial state; A control module, which is electrically connected to the driving module to control the driving module to drive the needle assembly; and An information storage module, which is provided in each treatment head, and the information storage module is used to record the error value of each treatment head.

2. The precision control system according to claim 1, wherein The precision control system further includes an information reading module, which is provided in the handle or the main unit, and the information reading module is communicatively connected to the information storage module and obtains the error value.

3. The precision control system according to claim 2, wherein, The information reading module is electrically connected to the control module so that the control module receives the error value, and the control module controls the driving module according to the error value.

4. A precision control method, applied to the precision control system according to any one of claims 1 to 4, characterized in that, The precision control method includes the following steps: Obtain the preset treatment depth of the microneedle therapeutic apparatus; Obtain the error value of the treatment head; Adjust the moving distance of the needle assembly according to the preset treatment depth and the error value.

5. The precision control method according to claim 4, wherein The step of obtaining the error value of the treatment head specifically includes: The control module controls the driving module to move a distance corresponding to the preset treatment depth; Measure the length value from the tip of the needle assembly to the treatment end face; Calculate the difference between the length value and the preset treatment depth as the error value.

6. The precision control method according to claim 5, characterized in that, The step of measuring the length value from the tip of the needle assembly to the treatment end face specifically includes: The needle assembly includes a plurality of microneedles, and measure the length of the longest microneedle exposed on the treatment end face as the length value.

7. The precision control method according to claim 6, characterized in that, The step of adjusting the moving distance of the needle assembly according to the preset treatment depth and the error value specifically includes: If the error value does not exceed the stroke length of the needle assembly, control the needle plate to move a distance equal to the error value towards or away from the treatment surface of the treatment head; If the error value exceeds the stroke length of the needle assembly, it is a defective product.

8. The precision control method according to any one of claims 4 to 7, characterized in that Before the step of obtaining the preset treatment depth of the microneedle therapeutic apparatus, it further includes: The needle assembly further includes a needle plate, and one end of a plurality of the microneedles is provided on the needle plate; Obtain the needle length error value between a plurality of the microneedles; If the needle length error value is greater than 0.5 mm, it is a defective product.

9. The precision control method according to claim 8, wherein, The step of obtaining the needle length error value between a plurality of the microneedles specifically includes: Measure the distances from the tips of the longest needle and the shortest needle among a plurality of the microneedles to the needle plate respectively, and the difference between the two is the needle length error value.

10. The precision control method according to claim 8, characterized in that The step of if the needle length error value is greater than 0.5 mm, it is a defective product specifically includes: If the needle length error value is greater than 0.15 mm, it is a defective product.

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