A finger traction device

Abstract

A finger traction device belongs to the field of medical devices. The present invention includes a hand fixation profiling frame, a traction bracket, a telescopic adjustment rod, and a finger support. The traction bracket is installed on the hand fixation profiling frame, the telescopic adjustment rod is installed on the traction bracket, and the finger support is installed at the bottom of the telescopic adjustment rod. The research and development purpose of the present invention is to solve the problems that the overall structure of the existing traditional finger traction device cannot be quantified, and only the feelings of the patient and the experience of the doctor are relied on for tentative adjustment, the force adjustment is difficult, the deformation is easy to occur, and the overall safety in use is poor. The finger traction device of the present invention combines the traction technology with the advanced sensor technology, has the advantages of digital control, intelligent adjustment, and simple operation, can significantly shorten the rehabilitation treatment time, improve the rehabilitation treatment effect, has a simple structure, ingenious design, convenient disassembly and assembly, firm assembly, and low cost, has certain economic benefits, and is suitable for popularization and use.

Description

Technical Field

[0001] The present invention relates to a finger traction device, belonging to the field of medical devices. Background Art

[0002] Finger traction devices are important auxiliary means for the rehabilitation treatment of finger joint and metacarpophalangeal joint flexion and extension dysfunction. Existing traditional finger traction devices can be divided into fixed type and spring-powered type according to whether they are movable. Although the fixed type has good fixing effect, its adjustment and use are not flexible enough. The patient's hand is fixed rigidly and not comfortably. The spring-powered type improves the patient's comfort to a certain extent, but the overall structure cannot be quantified, and it can only be adjusted tentatively based on the patient's feelings and the doctor's experience. The force adjustment is difficult, it is easy to deform, and the overall safety in use is poor.

[0003] Therefore, it is urgent to propose a new type of finger traction device to solve the above technical problems. Summary of the Invention

[0004] The research and development purpose of the present invention is to solve the problems of the existing traditional finger traction device that the overall structure cannot be quantified, and it can only be adjusted tentatively based on the patient's feelings and the doctor's experience, the force adjustment is difficult, it is easy to deform, and the overall safety in use is poor. A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to identify the key or important parts of the present invention, nor is it intended to limit the scope of the present invention.

[0005] Technical Solution of the Present Invention:

[0006] A finger traction device includes a hand-fixed profiling frame, a traction bracket, a telescopic adjustment rod, and a finger support. The traction bracket is installed on the hand-fixed profiling frame, the telescopic adjustment rod is installed on the traction bracket, and the finger support is installed at the bottom of the telescopic adjustment rod.

[0007] Preferably: Adjustment holes are processed on the traction bracket, and the telescopic adjustment rod is installed on the adjustment holes through bolts.

[0008] Preferably: It further includes a support adjustment rod. One end of the support adjustment rod is installed on the hand-fixed profiling frame, and the other end of the support adjustment rod is installed on the traction bracket.

[0009] In order to solve the problems of force quantization, digital control, intelligent adjustment, and simple operation, the technical solution of the present invention is proposed as follows:

[0010] A finger traction device, comprising a hand-fixed profiling frame, a traction bracket, a telescopic adjustment rod and a finger support. The traction bracket is installed on the hand-fixed profiling frame, the telescopic adjustment rod is installed on the traction bracket, and the finger support is installed at the bottom of the telescopic adjustment rod.

[0011] Preferably: adjustment holes are machined on the traction bracket, and the telescopic adjustment rod is installed on the adjustment holes through bolts.

[0012] Preferably: it further comprises a support adjustment rod, one end of the support adjustment rod is installed on the hand-fixed profiling frame, and the other end of the support adjustment rod is installed on the traction bracket.

[0013] Preferably: it further comprises a sensor and a main control device. The sensor is fixedly installed on the top of the traction bracket, the main control device is installed on the hand-fixed profiling frame, and the sensor and the main control device are electrically connected.

[0014] Preferably: the telescopic adjustment rod comprises an upper threaded rod, a lower threaded rod and an adjustment nut. The upper end of the upper threaded rod is installed on the traction bracket, the lower end of the upper threaded rod is connected and installed with the lower threaded rod through the adjustment nut, and the finger support is installed at the lower end of the lower threaded rod.

[0015] Preferably: the support adjustment rod comprises a first threaded rod, a second threaded rod and a support adjustment nut. The upper end of the first threaded rod is installed on the traction bracket, the lower end of the first threaded rod is connected and installed with the second threaded rod through the support adjustment nut, and the lower end of the second threaded rod is installed on the hand-fixed profiling frame.

[0016] Preferably: the traction bracket comprises a support frame, a support beam and a traction plate. One end of the support frame is installed on the hand-fixed profiling frame, the other end of the support frame is installed with the support beam, support adjustment installation holes are machined on the support frame, the support adjustment rod is installed in the support adjustment installation holes through bolts, the traction plate is installed on the support beam, adjustment holes are machined on the traction plate, and the telescopic adjustment rod is installed on the adjustment holes through bolts.

[0017] Preferably: the sensor is a high-sensitivity pressure sensor, the main control device comprises a traction force and component force measurement module, a wireless transmission module, a data storage module, a power management module and a main control module. The main control module is electrically connected to the traction force and component force measurement module, the wireless transmission module, the data storage module and the power management module respectively, and the sensor is electrically connected to the traction force and component force measurement module.

[0018] Preferably: sensors are respectively installed on the top surface and the side surface of the traction plate.

[0019] The present invention has the following beneficial effects:

[0020] 1. A finger traction device of the present invention combines traction technology with advanced sensor technology, has the advantages of digital control, intelligent adjustment, and simple operation, can significantly shorten the rehabilitation treatment time, and improve the rehabilitation treatment effect;

[0021] 2. A finger traction device of the present invention utilizes the force sensing principle of the sensor to directly measure and display the magnitude of the traction force, can accurately obtain rehabilitation treatment data, guide treatment and scientific research, is more conducive to the operation of doctors and patients, and is safer;

[0022] 3. A finger traction device of the present invention quantifies the time distribution of the elastic creep principle of the traction device, is simpler and faster to apply, and realizes intelligent rehabilitation and precise rehabilitation;

[0023] 4. A finger traction device of the present invention uses a telescopic adjustment rod instead of a spring, making the traction force more stable, the adjustment more accurate and simple;

[0024] 5. A finger traction device of the present invention can display measurement data, parameter adjustment, setting, etc. in real time through a liquid crystal display, which is convenient for users to use;

[0025] 6. A finger traction device of the present invention has a unique ultra-low power consumption design and can support the long-term operation of the system. All devices use low-power devices, and the main control module, wireless transmission module, traction force and component force measurement modules can all control their working states separately through programming. By programming to control the working state of the sensor, it can work in the lowest power consumption state, thereby realizing the low power consumption of the entire system.

[0026] 7. A finger traction device of the present invention has a simple structure, ingenious design, convenient disassembly and assembly, firm assembly, and low cost, has certain economic benefits, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view of a finger traction device;

[0028] Figure 2 is a structural schematic diagram of a finger traction device;

[0029] Figure 3 is a top view of a finger traction device;

[0030] Figure 4 is a structural diagram of a telescopic adjustment rod;

[0031] Figure 5 is a structural diagram of a support adjustment rod;

[0032] Figure 6 is a control block diagram of a finger traction device;

[0033] Figure 7 is the circuit diagram of the main control module;

[0034] Figure 8 is the circuit diagram of the traction and component force measurement module;

[0035] Figure 9 is the circuit diagram of the clock module;

[0036] Figure 10 is the circuit diagram of the data storage module;

[0037] Figure 11 is the circuit diagram of the serial interface module;

[0038] Figure 12 is the circuit diagram of the wireless transmission module;

[0039] Figure 13 is the circuit diagram of the power management module;

[0040] Figure 14 is the circuit diagram of the working status indication module;

[0041] In the figure: 1 - Hand - fixing profiling bracket, 2 - Traction bracket, 3 - Telescopic adjusting rod, 4 - Finger support, 5 - Support adjusting rod, 6 - Sensor, 7 - Main control device, 21 - Adjusting hole, 22 - Support frame, 23 - Support beam, 24 - Traction plate, 221 - Support adjusting mounting hole, 31 - Upper threaded rod, 32 - Lower threaded rod, 33 - Adjusting nut, 51 - First threaded rod, 52 - Second threaded rod, 53 - Support adjusting nut, U1 - Traction and component force measurement module, U2 - Wireless transmission module, U3 - Data storage module, U4 - Power management module, U5 - Main control module. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be described below through specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well - known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0043] The connections mentioned in the present invention are divided into fixed connections and detachable connections. The fixed connections, i.e., non-detachable connections, include but are not limited to conventional fixed connection methods such as hemming connection, rivet connection, bonding connection, and welding connection. The detachable connections include but are not limited to conventional disassembly methods such as threaded connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly defined, it is defaulted that at least one connection method can always be found among the existing connection methods to achieve this function, and those skilled in the art can select it according to their needs. For example: welding connection is selected for fixed connection, and hinge connection is selected for detachable connection.

[0044] Specific Embodiment 1: In combination with Figures 1 - 7 This embodiment is described. A finger traction device of this embodiment includes a hand-fixed profiling frame 1, a traction bracket 2, a telescopic adjustment rod 3, and a finger support 4. The traction bracket 2 is installed on the hand-fixed profiling frame 1, the telescopic adjustment rod 3 is installed on the traction bracket 2, and the finger support 4 is installed at the bottom of the telescopic adjustment rod 3. When in use, the hand-fixed profiling frame 1 is fixedly installed at the wrist, the diseased finger is placed on the finger support 4, and the hand-fixed profiling frame 1 and the traction bracket 2 are adjusted to the designated position suitable for treatment.

[0045] Specific Embodiment 2: In combination with Figures 1 - 7 This embodiment is described. A finger traction device of this embodiment, an adjustment hole 21 is processed on the traction bracket 2, and the telescopic adjustment rod 3 is installed in the adjustment hole 21 through a bolt. The adjustment hole 21 is an oval hole, and the telescopic adjustment rod 3 can be fixed at any position of the adjustment hole 21. The telescopic adjustment rod 3 can be adjusted to a suitable position according to different palm sizes and needs.

[0046] Specific Embodiment 3: In combination with Figures 1 - 7 This embodiment is described. A finger traction device of this embodiment further includes a support adjustment rod 5. One end of the support adjustment rod 5 is installed on the hand-fixed profiling frame 1, and the other end of the support adjustment rod 5 is installed on the traction bracket 2. The support adjustment rod 5 can adjust the traction height and play a role of flexible adjustment and support according to the needs of different conditions.

[0047] Specific Embodiment 4: In combination with Figures 1 - 7To describe this embodiment, a finger traction device of this embodiment further includes a sensor 6 and a main control device 7. The sensor 6 is fixedly installed on the top of the traction bracket 2, and the main control device 7 is installed on the hand-fixed profiling frame 1. The sensor 6 and the main control device 7 are electrically connected. Affected by the sensitivity of the sensor 6, the traction bracket 2 is a rigid connection or has only a slight deformation, and all connections can be adjusted in terms of distance and angle in the horizontal and vertical planes. In the vertical plane, a certain traction force is given through the adjustment of the telescopic adjustment rod 3 and the support adjustment rod 5, and the sensor 6 is used to monitor and display the magnitude of the traction force. Similarly, in the horizontal plane, through the adjustment of the telescopic adjustment rod 3 and the support adjustment rod 5, a traction force for horizontal finger separation is given, and the sensor 6 is used to monitor and display the magnitude of the traction force. If the traction resistance drops, the sensor 6 can automatically give an alarm prompt for adjustment, making the device safer and more intelligent.

[0048] Specific Embodiment Five: Combining Figures 1 - 7 To describe this embodiment, a finger traction device of this embodiment, the telescopic adjustment rod 3 includes an upper threaded rod 31, a lower threaded rod 32, and an adjustment nut 33. The upper end of the upper threaded rod 31 is installed on the traction bracket 2, and the lower end of the upper threaded rod 31 is connected and installed with the lower threaded rod 32 through the adjustment nut 33. The lower end of the lower threaded rod 32 is installed with a finger support 4. Rotating the adjustment nut 33 can achieve the telescoping of the telescopic adjustment rod 3, so as to adjust the magnitude of the traction force under the action of the telescopic adjustment rod 3.

[0049] Specific Embodiment Six: Combining Figures 1 - 7 To describe this embodiment, a finger traction device of this embodiment, the support adjustment rod 5 includes a first threaded rod 51, a second threaded rod 52, and a support adjustment nut 53. The upper end of the first threaded rod 51 is installed on the traction bracket 2, and the lower end of the first threaded rod 51 is connected and installed with the second threaded rod 52 through the support adjustment nut 53. The lower end of the second threaded rod 52 is installed on the hand-fixed profiling frame 1. Rotating the support adjustment nut 53 can achieve the telescoping of the support adjustment rod 5, so as to adjust the traction height of the traction bracket 2.

[0050] Specific Embodiment Seven: Combining Figures 1 - 7 To describe this embodiment, a finger traction device of this embodiment: The traction bracket 2 includes a support frame 22, a support beam 23, and a traction plate 24. One end of the support frame 22 is installed on the hand-fixed profiling frame 1, and the other end of the support frame 22 is installed with a support beam 23. A support adjustment installation hole 221 is processed on the support frame 22, and the support adjustment rod 5 is installed in the support adjustment installation hole 221 through a bolt. A traction plate 24 is installed on the support beam 23, and an adjustment hole 21 is processed on the traction plate 24. The telescopic adjustment rod 3 is installed in the adjustment hole 21 through a bolt. The support adjustment installation hole 221 and the adjustment hole 21 are waist-shaped holes, so as to flexibly adjust the installation positions of the support adjustment rod 5 and the telescopic adjustment rod 3.

[0051] Embodiment VIII: In combination with Figures 1 - 7 Describe this embodiment. A finger traction device in this embodiment, the sensor 6 is a high-sensitivity pressure sensor. The main control device 7 includes a traction force and component force measurement module U1, a wireless transmission module U2, a data storage module U3, a power management module U4, and a main control module U5. The main control module U5 is electrically connected to the traction force and component force measurement module U1, the wireless transmission module U2, the data storage module U3, and the power management module U4 respectively. The sensor 6 is electrically connected to the traction force and component force measurement module U1. The sensor 6 is responsible for sensing the traction force and transmitting the data to the traction force and component force measurement module U1. The traction force and component force measurement module U1 is responsible for collecting the traction force and component force. The wireless transmission module U2 is responsible for transmitting the collected information to a designated location, such as a computer display terminal or a mobile phone APP software, etc. The data storage module U3 is connected to the main control module U5 to achieve data storage. The power management module U4 is responsible for managing the power supply of the entire device. The power management module U4 detects the health status of the power supply through a signal line connected to the main control module U5 and intelligently controls the power supply according to needs to achieve stable power supply;

[0052] The traction time can be set, up to 3 hours at most, in minutes, and it works in a countdown mode, such as Figure 9 shown. When the timing ends, a warning sound reminder and a liquid crystal flashing display are carried out simultaneously to remind the user that the timing has ended, and the measurement data, parameter adjustment, setting, etc. can all be transmitted to the liquid crystal display for real-time display through the wireless transmission module U2, which is convenient for the user to use. Its wireless communication distance is greater than 50 meters, the storage capacity is greater than 8M bytes, and it can work at ultra-low voltage and ultra-low power consumption.

[0053] Embodiment IX: In combination with Figures 1 - 7 Describe this embodiment. A finger traction device in this embodiment, sensors 6 are respectively installed on the upper surface and the side surface of the traction plate 24. The sensor 6 on the upper surface of the traction plate 24 is responsible for detecting the main traction force, and the sensors 6 on the side surfaces of the traction plate 24 are responsible for detecting the component forces. The sensor 6 can simultaneously measure 5 paths of main traction forces and component forces. The measurement range of the main traction force is: 100 - 1500g, and the resolution is 20 grams; the measurement range of the component force is: 10 - 500g, and the resolution is 10g.

[0054] Embodiment X: In combination with Figures 1 - 7To describe this embodiment, a finger traction device of this embodiment, the traction force and component force measurement module U1 includes five sensors 6, five filtering and amplification circuits, and five high-precision AD conversion modules. The sensor 6 is a high-sensitivity pressure sensor. The sensors 6 are respectively installed on the top surface and the side surface of the traction plate 24. Among them, the sensor 6 installed on the top surface of the traction plate 24 can measure the traction force in the direction perpendicular to the traction plate 24, and the sensors 6 installed on the side surface of the traction plate 24 can measure the component forces in the directions perpendicular to the traction force;

[0055] The wireless transmission module U2 is a single-chip radio frequency transceiver. The operating voltage is 1.9 - 3.6V and it operates on the 2.4GHz ISM (Industrial, Scientific and Medical) channel. The conversion time between channels is less than 650us. The wireless transmission module U2 consists of a frequency synthesizer, a receiving demodulator, a power amplifier, a crystal oscillator, and a modulator. It does not require an external surface acoustic wave filter, automatically processes the header and CRC (Cyclic Redundancy Check), and uses the SPI interface to communicate with the microprocessor.

[0056] The data memory U3 is directly connected to the single-chip microprocessor through the SPI data line. The data memory U3 is an 8M Flash, which realizes the storage of a large amount of data. The data memory U3 adopts a three-wire serial read and write method, which is convenient and fast for reading and writing and is easy to program and implement.

[0057] The power management module U4 is a DC / DC conversion chip. The power management module U4 can enable the sensor node to work at a lower voltage. For ordinary two AA batteries, as long as the voltage is greater than 0.9V, the power management module U4 can stably output 3.3V voltage through DC / DC conversion. When the voltage provided by the external power supply is not less than 2.0V, or when the system is in a low-power state, the power module can be in the off mode, that is, it works in a low-power state. In the off mode, the external power supply directly supplies power to the system without passing through the DC / DC conversion of the power management module U4. The operating current of the power management module U4 is 37uA, while in the off mode, there is only a control current of 2uA.

[0058] The main control module U5 is the core unit of the sensor node, mainly used for the processing and storage of sensed data, as well as the control of traction and component force acquisition, wireless transmission, and power management. The present invention uses the ultra-low power microprocessor chip MSP430F149 of Texas Instruments, USA. It has a 16-bit RISC architecture. The 16-bit registers and constant generators in the CPU enable the MSP430 microprocessor to achieve the highest code efficiency; the flexible clock source can enable the device to achieve the lowest power consumption. The digitally controlled oscillator DCO can quickly wake up the device from the low-power mode and activate it to the active working mode in less than 6 us. There are two built-in 16-bit timers and a fast 12-bit A / D converter. The system can use its own 12-bit A / D converter to collect external signals.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0060] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0061] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0062] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures of the device. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.

[0063] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described herein can be implemented in an order other than those illustrated or described herein.

[0064] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutations and combinations. Therefore, the present invention will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present invention.

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A finger traction device, characterized in that: It includes a hand-fixed profiling frame (1), a traction bracket (2), a telescopic adjustment rod (3) and finger supports (4). The traction bracket (2) is installed on the hand-fixed profiling frame (1), the telescopic adjustment rod (3) is installed on the traction bracket (2), and the finger supports (4) are installed at the bottom of the telescopic adjustment rod (3); an adjustment hole (21) is machined on the traction bracket (2), and the telescopic adjustment rod (3) is installed on the adjustment hole (21) through bolts; it also includes a support adjustment rod (5), one end of the support adjustment rod (5) is installed on the hand-fixed profiling frame (1), and the other end of the support adjustment rod (5) is installed on the traction bracket (2). The traction bracket (2) includes a support frame (22), a support beam (23) and a traction plate (24). One end of the support frame (22) is installed on the hand-fixed profiling frame (1), the other end of the support frame (22) is installed with the support beam (23), a support adjustment installation hole (221) is machined on the support frame (22), the support adjustment rod (5) is installed in the support adjustment installation hole (221) through bolts, the traction plate (24) is installed on the support beam (23), an adjustment hole (21) is machined on the traction plate (24), and the telescopic adjustment rod (3) is installed on the adjustment hole (21) through bolts. Sensors (6) are respectively installed on the top surface and the side surface of the traction plate (24). The sensor (6) on the top surface of the traction plate (24) is responsible for detecting the main traction force, and the sensor (6) on the side surface of the traction plate (24) is responsible for detecting the component force.

2. The finger tractor according to claim 1, wherein: It also includes a main control device (7). The sensor (6) is fixedly installed on the top of the traction bracket (2), the main control device (7) is installed on the hand-fixed profiling frame (1), and the sensor (6) and the main control device (7) are electrically connected.

3. A finger traction device according to claim 1, characterized in that: The telescopic adjustment rod (3) includes an upper threaded rod (31), a lower threaded rod (32) and an adjustment nut (33). The upper end of the upper threaded rod (31) is installed on the traction bracket (2), the lower end of the upper threaded rod (31) is connected and installed with the lower threaded rod (32) through the adjustment nut (33), and the lower end of the lower threaded rod (32) is installed with the finger supports (4).

4. The finger tractor according to claim 3, wherein: The support adjustment rod (5) includes a first threaded rod (51), a second threaded rod (52) and a support adjustment nut (53). The upper end of the first threaded rod (51) is installed on the traction bracket (2), the lower end of the first threaded rod (51) is connected and installed with the second threaded rod (52) through the support adjustment nut (53), and the lower end of the second threaded rod (52) is installed on the hand-fixed profiling frame (1).

5. A finger traction device according to claim 4, characterized in that: The sensor (6) is a high-sensitivity pressure sensor. The main control device (7) includes a traction force and component force measurement module (U1), a wireless transmission module (U2), a data storage module (U3), a power management module (U4) and a main control module (U5). The main control module (U5) is respectively electrically connected to the traction force and component force measurement module (U1), the wireless transmission module (U2), the data storage module (U3) and the power management module (U4), and the sensor (6) is electrically connected to the traction force and component force measurement module (U1).

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