Rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients

Abstract

This application proposes a rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's disease patients. The device includes: a base, a support, a first rotary wheel, a second rotary wheel, a first crankshaft, a second shaft, a speed sensor, a control unit, and two pedals. The second rotary wheel meshes with the first rotary wheel. The second shaft is connected to the speed sensor. The speed sensor transmits the measured speed signal to the control unit, which calculates the response and stability parameters for the current test. At different electrode implantation points, the response and stability parameters of the subject during the rotary motion are measured. The control unit determines the optimal implantation point by comparing the response and stability parameters. This rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's disease patients measures the stability and response parameters during each rotary motion, providing objective indicators of motor flexibility and offering doctors an objective basis for determining the optimal implantation point.

Description

Technical Field

[0001] This application relates to electrical stimulation therapy for Parkinson's patients, and more particularly to a rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients. Background Technology

[0002] Parkinson's disease (PD) is a neurodegenerative disease in middle-aged and elderly people, characterized by tremor, rigidity, bradykinesia, and postural instability. Deep brain stimulation (DBS), as one of the treatment methods for Parkinson's disease, emerged in the 1970s. DBS involves implanting stimulating electrodes into nuclei or specific brain regions, and using pulsed electrical stimulation to modulate the function of the relevant nuclei or brain regions to improve symptoms.

[0003] The core of DBS treatment is precise positioning. After determining the target point for electrode insertion, the electrode is inserted towards the target point from a predetermined starting point (usually 10mm away), typically 1mm at a time. Treatment effectiveness is assessed at each insertion depth; therefore, the patient is asked to perform a cycling motion during the procedure to evaluate motor flexibility after electrical stimulation at that location. By comparing multiple depths, the electrode is placed at the position with the best effect.

[0004] The flexibility of a patient's movement after receiving electrical stimulation is a subjective feeling of the doctor. Moreover, the movement of points stimulated at different depths cannot be expressed simultaneously. Therefore, comparing the effects by relying solely on the doctor's subjective feelings to compare the movement performance of each point in memory is not objective enough. Summary of the Invention

[0005] In view of the above problems, this application aims to propose a rotary motion feedback device for intraoperative assessment of the surgical effect of Parkinson's patients, providing doctors with objective data on motion flexibility and helping them to accurately determine the optimal electrode implantation point.

[0006] The rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients, as described in this application, includes: a base, a bracket, a first rotary wheel, a second rotary wheel, a first crankshaft, a second rotating shaft, a speed sensor, a control unit, and two pedals;

[0007] The base is for placement on the operating table;

[0008] The bracket is fixed to the base; two pedals are respectively installed at both ends of the first crankshaft, and the middle part of the first crankshaft is fixedly installed with the first wheel, thereby driving the first wheel to rotate through the pedals;

[0009] The second rotating wheel is mounted on the bracket via a second rotating shaft; the second rotating wheel meshes with the first rotating wheel and is driven to rotate by the first rotating wheel;

[0010] The second rotating shaft is connected to a speed sensor to measure the rotational speed of the second rotating wheel.

[0011] The rotation speed sensor transmits the measured rotation speed signal to the control unit, which calculates the response and stability parameters for this test. At different electrode implantation points, the response and stability parameters of the subject during rotational movement are measured. The control unit determines the optimal implantation point by comparing the response and stability parameters.

[0012] Preferably, the rotational speed sensor is a speed encoder.

[0013] Preferably, when determining the optimal implantation point, the control unit first considers the stable parameters, and then considers the response parameters if the stable parameters are the same.

[0014] Preferably, the stability parameter is the variance of the rotational speed during this rotational motion;

[0015] The response parameter is the slope when the rotational speed increases during this rotational motion.

[0016] Preferably, it further includes a display device;

[0017] The display device is used to display the location of the implantation point for each test, as well as the stability parameters and response parameters corresponding to that implantation point.

[0018] Preferably, the optimal implantation point is displayed with different colors or brightness.

[0019] The rotary motion feedback device of this application for intraoperative assessment of surgical outcomes in Parkinson's patients measures the stability and response parameters during each rotation of the rotary wheel as an objective indicator of motion flexibility, providing objective evidence for doctors to determine the optimal implantation point. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients according to this application;

[0021] Figure 2 for Figure 1 A schematic diagram of the main structure of a rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients;

[0022] Figure 3 The frame of the circuit portion of the rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients, as described in this application. Detailed Implementation

[0023] The following is a detailed description of the rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients, with reference to the accompanying drawings.

[0024] The rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients, as described in this application, includes: a base 10, a bracket 11, a first rotary wheel 12, a second rotary wheel 15, a first crankshaft 13, a second rotating shaft 16, a speed sensor 21, a control unit 20, and two pedals 14.

[0025] The base 10 is used to place the device on the operating table.

[0026] The bracket 11 is fixed to the base 10. Two pedals 14 are respectively installed at both ends of the first crankshaft 13. The middle part of the first crankshaft 13 is fixedly installed with the first wheel 12, thereby driving the first wheel 12 to rotate through the pedals 14.

[0027] The second rotating wheel 15 is mounted on the bracket 11 via the second rotating shaft 16; the second rotating wheel 15 meshes with the first rotating wheel 12 and is driven to rotate by the first rotating wheel 12.

[0028] The second rotating shaft 16 is connected to the speed sensor 21 to measure the rotational speed of the second rotating wheel 15.

[0029] The speed sensor 21 transmits the measured speed signal to the control unit 20.

[0030] The control unit 20 calculates the response parameters and stability parameters for this test.

[0031] At different electrode implantation sites, the response parameters and stability parameters of the subject during rotational movement are measured respectively; the control unit 20 determines the optimal implantation site based on the response parameters and stability parameters.

[0032] In one embodiment, the speed sensor 21 is a speed encoder, but the speed sensor 21 can also be other known speed measuring devices.

[0033] When determining the optimal implantation point, the control unit 20 first considers the stability parameters, and then considers the response parameters if the stability parameters are the same.

[0034] The stability parameter is the variance of the rotational speed during this rotational motion.

[0035] The response parameter is the slope when the rotational speed increases during this rotational motion.

[0036] The rotary motion feedback device of this application may include a display device 22. The display device is used to display the position of the implantation point in each test, as well as the stability parameters and response parameters corresponding to that implantation point. The optimal implantation point is displayed with different colors or brightness.

[0037] Although Figure 1 The display control unit 20 is mounted on the base 10, but in practice, it is not mandatory for the control unit 20 to be mounted on the base 10. The control unit 20 and the display device 22 can be connected via smart devices such as tablets or smartphones. The speed sensor 21 and the control unit 20 can be directly electrically connected or connected wirelessly.

[0038] In use, the target point, the predetermined starting point, and the surrounding tissue can be displayed on the display device based on MRI images. For example, 1 mm is considered one test point. Testing is performed in 1 mm increments from the starting point towards the target point. At each new test point, the doctor issues a rotational movement command to the subject (i.e., a Parkinson's patient undergoing surgery). The subject presses the pedals with both feet, making a rotational movement similar to pedaling a bicycle. The rotational speed sensor records the rotational speed and transmits the measurement signal to the control unit (e.g., a tablet computer). The control unit determines the start and end of the movement based on the rotational speed, calculates the speed-up index (slope) of the response to the stable rotational speed, and calculates the stability index (variance) of the rotational speed. Then, the electrode is moved, and the above process is repeated until all test points are completed. By comparing the stability indices corresponding to each test point, the optimal implantation point is determined. If the stability indices are the same, the speed-up index is considered. After calculating the optimal implantation point, the control unit can display it on the display device (tablet screen) so that doctors can intuitively determine the location of the implantation point. It can simultaneously display the stability index and response speed index of each implantation point, using different colors such as yellow, highlighting, or flashing to indicate the location of the optimal implantation point.

[0039] Unless otherwise defined, all technical and / or scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this invention relates. The materials, methods, and embodiments mentioned in this application are illustrative only and not restrictive.

[0040] Although the present invention has been described in conjunction with specific embodiments, those skilled in the art can make appropriate substitutions, modifications and changes within the inventive spirit of this application, and such substitutions, modifications and changes still fall within the protection scope of this application.

Claims

1. A rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients, comprising: Base, bracket, first rotating wheel, second rotating wheel, first crankshaft, second rotating shaft, speed sensor, control unit, two pedals; The base is for placement on the operating table; The bracket is fixed to the base; two pedals are respectively installed at both ends of the first crankshaft, and the middle part of the first crankshaft is fixedly installed with the first wheel, thereby driving the first wheel to rotate through the pedals; The second rotating wheel is mounted on the bracket via a second rotating shaft; the second rotating wheel meshes with the first rotating wheel and is driven to rotate by the first rotating wheel; The second rotating shaft is connected to a speed sensor to measure the rotational speed of the second rotating wheel. The rotation speed sensor transmits the measured rotation speed signal to the control unit, which calculates the response and stability parameters for this test. At different electrode implantation points, the response and stability parameters of the subject during wheel rotation are measured. The control unit determines the optimal implantation point by comparing the response and stability parameters. When determining the optimal implantation point, the control unit first considers the stability parameters, and then considers the response parameters if the stability parameters are the same. The stability parameter is the variance of the rotational speed during this rotational motion; The response parameter is the slope when the rotational speed increases during this rotational motion.

2. The rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients according to claim 1, characterized in that: The rotational speed sensor is a speed encoder.

3. The rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients according to claim 1, characterized in that: It further includes a display device; The display device is used to display the location of the implantation point for each test, as well as the stability parameters and response parameters corresponding to that implantation point.

4. The rotary motion feedback device for intraoperative assessment of surgical outcomes in Parkinson's patients according to claim 3, characterized in that: The optimal implantation point is displayed with different colors or brightness levels.

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