CN-121971097-A - Finger muscle tension assessment method and device based on bidirectional active traction

CN121971097ACN 121971097 ACN121971097 ACN 121971097ACN-121971097-A

Abstract

The application relates to a finger muscle tension assessment method and device based on bidirectional active traction, comprising the steps of controlling a driving unit to sequentially execute a first active traction operation and a second active traction operation on a target finger, enabling the target finger to respectively present a bending state pointing to a first direction and recover to an initial state, acquiring first driving response information and second driving response information of the driving unit executing the first active traction operation, and generating a finger muscle tension assessment result representing the target finger according to the first driving response information and the second driving response information. Under the condition of not depending on an elastic return element, the same driving unit is used for applying active traction in a bending direction and a straightening direction to a target finger, and the tension characteristics of the finger muscle are evaluated based on driving response information obtained in the bidirectional active traction process. The response characteristics of the fingers in different movement directions are obtained through the complete bending and straightening movement process, so that objective and stable assessment of the tension characteristics of the fingers is realized.

Inventors

ZHU ZHENGYANG
WANG LIZHEN
FAN YUBO
LIN DONG

Assignees

杭州市北京航空航天大学国际创新研究院(北京航空航天大学国际创新学院)

Dates

Publication Date: 20260505
Application Date: 20260408

Claims (10)

1. A finger muscle tension assessment method based on bidirectional active traction, which is characterized by comprising the following steps: The target finger is in an initial state of straightening in a natural state; Controlling a driving unit to execute a first active traction operation on the target finger, so that the target finger presents a bending state pointing to a first direction, and acquiring first driving response information of the driving unit for executing the first active traction operation; Controlling the driving unit to perform second active traction on the target finger in the bending state, so that the target finger moves to the initial state along the direction opposite to the first direction, and obtaining second driving response information of the driving unit for executing the second active traction operation; And generating a finger muscle tension evaluation result representing the target finger according to the first driving response information and the second driving response information.
2. The method of claim 1, wherein the natural state is a state in which the target finger is in a condition of removal of elastic return element support.
3. The bi-directional active traction based finger muscle tone assessment method of claim 1, wherein the speed of movement of the target finger in the first active traction operation and the second active traction operation is below a preset speed threshold.
4. The bi-directional active traction based finger muscle tone assessment method of claim 1, wherein the displacement of movement of the target finger in the first active traction operation and the second active traction operation is below a preset displacement threshold.
5. The method of claim 1, wherein generating a finger muscle tension assessment result characterizing the target finger from the first driving response information and the second driving response information comprises: The driving unit is controlled to repeatedly execute the first active traction operation and the second active traction operation, and at least two pieces of first driving response information and at least two pieces of second driving response information are obtained; Determining a first mechanical response characteristic of the target finger in a forward loading process based on at least two first driving response information, and determining a second mechanical response characteristic of the target finger in a reverse retraction process based on at least two second driving response information; Generating a finger muscle tension assessment result representing the target finger according to the first mechanical response characteristic and the second mechanical response characteristic.
6. The method according to claim 5, wherein the controlling the driving unit to repeatedly perform the first active traction operation and the second active traction operation, to obtain at least two of the first driving response information and at least two of the second driving response information, comprises: The control driving unit drives the traction mechanism to repeatedly execute the first active traction operation and the second active traction operation on the target finger according to preset traction parameters; first drive response information and at least two of the second drive response information are collected in relation to a first active traction operation and the second active traction operation.
7. The bi-directional active traction based finger muscle tone assessment method of claim 5, wherein the generating a finger muscle tone assessment result that characterizes the target finger from the first and second mechanical response characteristics comprises: Taking the first mechanical response characteristic as the basic mechanical response characteristic of the target finger under the low-speed or quasi-static traction condition, and taking the second mechanical response characteristic as the changing mechanical response characteristic of the target finger under different traction conditions; And comparing and calculating the first mechanical response characteristic and the second mechanical response characteristic to obtain a characteristic value of the muscular tension for representing the mechanical response difference of the target finger, and obtaining the evaluation result of the muscular tension of the finger according to the characteristic value of the muscular tension.
8. A finger muscle tension assessment device based on bidirectional active traction, comprising: The initial fixing unit is used for enabling the target finger to be in an initial state of being straightened in a natural state; The main control unit is used for controlling the driving unit to execute a first active traction operation on the target finger, so that the target finger presents a bending state pointing to a first direction, and first driving response information of the driving unit for executing the first active traction operation is obtained; the main control unit is further used for controlling the driving unit to conduct second active traction on the target finger in the bending state, so that the target finger moves to the initial state along the direction opposite to the first direction, and second driving response information of the driving unit for executing the second active traction operation is obtained; And the evaluation unit is used for generating a finger muscle tension evaluation result representing the target finger according to the first driving response information and the second driving response information.
9. An electronic device, comprising The memory device is used for storing the data, A processor, and Computer program stored on the memory and executable on the processor, which when executed implements the method for assessing finger muscle tension based on bi-directional active traction as claimed in any one of claims 1 to 7.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the method for evaluating finger muscle tension based on bi-directional active traction as claimed in any one of claims 1 to 7.

Description

Finger muscle tension assessment method and device based on bidirectional active traction Technical Field The application relates to the technical field of medical auxiliary devices, in particular to a finger muscle tension assessment method and device based on bidirectional active traction. Background The degree of tension in a resting relaxed state of the muscle is called muscle tone. Muscle tone is the basis for maintaining various postures of the body and normal movements. The finger muscle tension is an important index reflecting the mechanical properties of hand muscles, tendons and related soft tissues, and has important significance in rehabilitation evaluation and training of patients suffering from nerve injury, cerebral apoplexy, spinal cord injury, upper motor neuron diseases and the like. The finger muscle tension is objectively and repeatedly evaluated, which is helpful for guiding the formulation and adjustment of the rehabilitation training scheme and improving the safety and effectiveness of the rehabilitation process. The existing assessment method of the finger muscle tension mainly comprises a manual assessment method and a mechanical auxiliary assessment method. The manual evaluation method generally depends on subjective feeling or grading judgment of a rehabilitation therapist during passive finger traction, and an evaluation result is easily influenced by factors such as operator experience, traction speed, force application mode and the like, and is strong in subjectivity and poor in repeatability and consistency. To improve the objectivity of the assessment, some mechanical assistance methods have been used to apply traction or stretching movements to the finger by means of a device, and to combine force sensors or other measurement means to obtain mechanical information during the traction process. The method mostly adopts a unidirectional passive stretching mode, so that fingers generate stretching motion under the action of external force, and the muscle tension characteristic is deduced based on the force value or the maximum value obtained in the stretching process. However, such methods often suffer from the following disadvantages: On one hand, the unidirectional passive stretching process is difficult to reflect the mechanical response difference of fingers in different movement directions, the dynamic characteristics in the loading and retracting processes are ignored, and the overall characteristics of the finger muscle tension are difficult to comprehensively characterize; On the other hand, the passive stretching method often relies on elastic elements, natural return or self-reaction force of the tested tissue to complete the movement process, the traction direction switching condition is uncontrollable, and additional non-physiological mechanical factors are easily introduced in the stretching and return processes, so that the stability and reliability of the evaluation result are affected. In addition, some existing methods reduce dynamic interference by limiting stretching speed or emphasizing uniform stretching conditions, but uncertainty of a return stage is still difficult to avoid, and an evaluation process usually only focuses on mechanical information in a single direction or in a single stage, so that an evaluation dimension is relatively single. Disclosure of Invention The embodiment of the application provides a finger muscle tension assessment method and device based on bidirectional active traction, which at least solve the problems of poor mechanical response and low assessment stability of measuring finger muscle tension in the related technology. In a first aspect, an embodiment of the present application provides a method for evaluating finger muscle tension based on bidirectional active traction, including: The target finger is in an initial state of straightening in a natural state; Controlling a driving unit to execute a first active traction operation on the target finger, so that the target finger presents a bending state pointing to a first direction, and acquiring first driving response information of the driving unit for executing the first active traction operation; Controlling the driving unit to perform second active traction on the target finger in the bending state, so that the target finger moves to the initial state along the direction opposite to the first direction, and obtaining second driving response information of the driving unit for executing the second active traction operation; And generating a finger muscle tension evaluation result representing the target finger according to the first driving response information and the second driving response information. In an embodiment, the natural state is a state in which the target finger is in a condition of removing the elastic return element support. In an embodiment, the movement speed of the target finger in the first active traction operation and the second active traction oper