Brain electrode puncture module performance testing device and method

Abstract

The invention provides a brain electrode puncture module performance test method, and relates to the technical field of test.The brain electrode puncture module performance test method comprises a base, a clamping mechanism, a rotating target and a rotating body, a to-be-tested peristaltic driving device is fixedly installed on the base through the clamping mechanism, and a puncture needle of the peristaltic driving device extends in the first direction; the rotating body is fixedly installed at the extending tail end, in the first direction, of the puncture needle. The rotating target is movably arranged on the base, the moving direction of the rotating target on the base is a first direction, and the rotating target is provided with a through hole allowing the rotating body to penetrate through. The actual movement distance and the actual rotation angle of the puncture needle are measured and compared with the preset movement distance and the preset rotation angle of the peristaltic driving device, the movement distance error data and the rotation angle error data are calculated, the error range of the puncture device can be determined easily, and the convenience of subsequent operation or correction can be improved easily.

Description

Technical Field

[0001] This invention relates to the field of testing technology, and more specifically, to a device and method for testing the performance of a brain electrode puncture module. Background Technology

[0002] Brain biopsy is an invasive medical procedure that involves inserting a needle or catheter into the brain. It is primarily used to diagnose or treat brain diseases such as tumors, infections, hemorrhages, or cerebrospinal fluid abnormalities. Its core objective is to accurately locate the lesion while minimizing damage to normal brain tissue.

[0003] Brain puncture equipment typically uses a drive mechanism to rotate and displace the puncture needle. The accuracy of the brain puncture equipment directly affects the treatment outcome; therefore, performance testing of the puncture module is particularly important.

[0004] A Chinese patent application with publication number CN209980610U discloses a laboratory brain puncture accuracy testing device, comprising a puncture section, a cranial model, a testing section, and an analysis section. The puncture section includes a puncture module and a linear feed module, the linear feed module driving the puncture module to move up and down, thereby allowing the puncture module to perform target puncture on the cranial model. The testing section includes a spatial displacement sensor and a flexible fixing spring, and the cranial model is placed inside the testing section. The analysis section includes a display and an analysis host, and the analysis host is connected to the testing section.

[0005] Existing precision detection devices simulate the puncture process to observe the target drift of brain puncture equipment. However, existing experimental simulation detection devices require different experimental scenarios to be set up for different surgeries, which is difficult and costly to set up, and has poor applicability, thus requiring improvement. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a device and method for testing the performance of brain electrode puncture modules.

[0007] According to the present invention, a performance testing device for a brain electrode puncture module includes a base, a clamping mechanism, a rotating target, and a rotating body. The clamping mechanism fixes the peristaltic drive device to be tested on the base. The puncture needle of the peristaltic drive device extends in a first direction, and the rotating body is fixedly installed at the extension end of the puncture needle in the first direction. The rotating target is movably disposed on the base. The direction of movement of the rotating target on the base is the first direction, and the rotating target has a through hole that allows the rotating body to pass through.

[0008] Preferably, the rotating body includes a pointer, and the end face of the rotating target is provided with a rotation scale.

[0009] Preferably, the base is provided with a displacement slider, and the base is provided with a groove that allows the displacement slider to move along a first direction, and the rotating target is fixedly installed on the displacement slider.

[0010] Preferably, the groove on the base is a recessed structure, and a guide groove is provided on the side wall of the recessed groove; a locking screw is detachably installed on the displacement slider, and the end of the locking screw passes through the guide groove from the outside to the inside and is then screwed into the displacement slider.

[0011] Preferably, at least one set of locking screws is symmetrically arranged on both sides of the displacement slider.

[0012] Preferably, the upper surface of the base is provided with a displacement scale along the first direction, and the displacement slider is provided with a slider indicator mark.

[0013] Preferably, the rotating body has a sensor mounting hole.

[0014] Preferably, when measuring the puncture force of the puncture needle, the rotating target is replaced with a support, a force sensor is installed on the support, the end of the puncture needle is in contact with the force sensor, and the puncture force of the puncture needle under the drive of the peristaltic drive device is measured.

[0015] According to the present invention, a method for testing the performance of a brain electrode puncture module is provided, and the testing method comprises the following steps:

[0016] Step S1: Fix the peristaltic drive device on the base and fix the rotating body on the end of the puncture needle;

[0017] Step S2: Move the rotating target to align the end face of the rotating target with the end face of the rotating body, and record the initial displacement value L0 and rotation value R0.

[0018] Step S3: Set the displacement L and rotation R values ​​of the peristaltic drive device, and start the peristaltic drive device to make the puncture needle move and rotate to a new position;

[0019] Step S4: Move the rotating target to align the end face of the rotating target with the end face of the rotating body, and record the displacement value L1 and rotation value R1 after the movement.

[0020] Step S5: Compare the absolute value of the difference between L1 and L0 with L to obtain the positioning progress error; compare the absolute value of the difference between R1 and R0 with R to obtain the rotation progress error.

[0021] Preferably, the magnetic navigation positioning sensor is installed on the sensor mounting hole of the rotating body, and the peristaltic drive device is activated to displace and rotate the puncture needle to a new position, thereby obtaining the motion parameters of the puncture needle.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. This invention calculates the movement distance error data and rotation angle error data by measuring the actual movement distance and actual rotation angle of the puncture needle and comparing them with the preset movement distance and preset rotation angle of the input peristaltic drive device. This helps to determine the error range of the puncture device and improves the convenience of subsequent operations or corrections.

[0024] 2. This invention, through its modular design, allows for the measurement of the positioning accuracy and load performance of the puncture device by replacing different detection modules, thus exhibiting high applicability.

[0025] 3. By designing the mass of the rotating body to be much smaller than that of the puncture needle, this invention minimizes the influence of the measuring device on the measurement, thus helping to improve measurement accuracy. Attached Figure Description

[0026] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram illustrating the main purpose of this invention: to test the positioning accuracy of a peristaltic drive device.

[0028] Figure 2 This is a schematic diagram illustrating the testing of the load performance of the peristaltic drive device, which is the main feature of this invention.

[0029] As shown in the figure: 100, peristaltic drive device; 200, puncture needle; 301, clamping mechanism; 302, base; 303, displacement scale; 304, guide groove; 401, locking screw; 402, displacement slider; 403, slider indicator mark; 501, rotating target; 502, rotating body; 503, rotation scale; 504, sensor mounting hole; 505, pointer; 601, force sensor; 602, bracket. Detailed Implementation

[0030] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0031] like Figure 1 and Figure 2As shown, a brain electrode puncture module performance testing device according to the present invention includes a base 302, a clamping mechanism 301, a rotating target 501, and a rotating body 502. The clamping mechanism 301 fixes the peristaltic drive device 100 to be tested on the base 302. The puncture needle 200 of the peristaltic drive device 100 extends in a first direction, and the rotating body 502 is fixedly installed at the extension end of the puncture needle 200 in the first direction. The rotating target 501 is movably disposed on the base 302, and the direction of movement of the rotating target 501 on the base 302 is the first direction. The rotating target 501 has a through hole that allows the rotating body 502 to pass through.

[0032] The technical solution of this application fixes the peristaltic drive device 100 on the base 302, and then uses the rotating target 501 and the rotating body 502 as references to measure the actual displacement distance and rotation angle of the puncture needle 200. By comparing the displacement distance and rotation angle of the input peristaltic drive device 100, the displacement error and rotation error are obtained, and the positioning accuracy of the peristaltic drive device 100 is evaluated.

[0033] Specifically, the base 302 is rectangular in shape, and the length direction of the base 302 is parallel to the first direction. The clamping mechanism 301 includes two clamping blocks with semi-circular clamping parts. One clamping block is fixedly installed at one end of the length of the base 302 by fasteners such as screws, and the other clamping block is installed on the upper part of the first clamping block by fasteners such as screws. The semi-circular clamping parts of the two clamping blocks are arranged opposite to each other to clamp and fix the peristaltic drive device 100.

[0034] It should be noted that the peristaltic drive device 100 in this application refers to the drive device that drives the puncture needle 200 to move and rotate. The base 302 can be installed on a horizontal or vertical plane to better simulate the working state of the puncture needle 200.

[0035] More specifically, a displacement slider 402 is provided on the base 302, and a groove is provided on the base 302 to allow the displacement slider 402 to move in a first direction. The displacement slider 402 slides in engagement with the inner wall of the groove, and the rotating target 501 is fixedly mounted on the displacement slider 402. The groove on the base 302 is a recessed structure, and a guide groove 304 is provided on the side wall of the recessed groove. A locking screw 401 is detachably installed on the displacement slider. The end of the locking screw 401 passes through the guide groove 304 from the outside to the inside and is then screwed into the displacement slider 402. At least one set of locking screws 401 is symmetrically arranged on both sides of the displacement slider 402. The technical solution of this application uses a locking screw 401 to movably connect the displacement slider 402 to the base 302. The recessed groove ensures that the displacement slider 402 can only move in the first direction within the plane of the base 302. Furthermore, the locking screw 401 and the guide groove 304 cooperate to further restrict the degree of freedom of the displacement slider 402 in the direction perpendicular to the plane of the base 302, thus ensuring the stability and reliability of the system's movement.

[0036] In one feasible embodiment, the upper surface of the slider is at the same height as the upper surface of the base 302. A displacement scale 303 is provided on the upper surface of the base 302 along a first direction, and a slider indicator mark 403 is provided on the displacement slider 402. The slider indicator mark 403 and the displacement scale 303 work together to facilitate the user reading displacement data. The rotating body 502 includes a pointer 505, and a rotation scale 503 is provided on the end face of the rotating target 501. The technical solution of this application uses a cross-shaped rotating body 502. The mass of the rotating body 502 is much smaller than the mass of the puncture needle 200. In one feasible embodiment, the mass of the rotating body 502 is less than one-hundredth of the mass of the puncture needle 200, reducing the impact of the mass of the rotating body 502 on measurement accuracy. During measurement, the end face of the rotating body 502 is aligned with the end face of the rotating target 501, and the rotation scale 503 is read through the pointer 505, facilitating the user to obtain rotation data. The technical solution of this application achieves displacement and rotation position identification by using a small mass rotating body 502 as a marker, thereby reducing interference to the system measurement.

[0037] In another feasible implementation, a sensor mounting hole 504 is provided on the rotating body 502. An NDI magnetic navigation positioning sensor is installed in the sensor mounting hole 504 for measurement. The motion performance parameters of the puncture needle 200 are obtained through the NDI system.

[0038] In another feasible implementation, when measuring the puncture force of the puncture needle 200, the rotating target 501 is replaced with a support 602, and a force sensor 601 is mounted on the support 602. The end of the puncture needle 200 contacts the force sensor 601, and the puncture force of the puncture needle 200 under the drive of the peristaltic drive device 100 is measured. The technical solution of this application adopts a modular design, which facilitates the measurement of puncture force and the use of the sensor.

[0039] According to the present invention, a method for testing the performance of a brain electrode puncture module is provided, and the testing method comprises the following steps:

[0040] Step S1: Fix the peristaltic drive device 100 on the base 302 and fix the rotating body 502 on the end of the puncture needle 200.

[0041] Step S2: Move the rotating target 501 to align its end face with the end face of the rotating body 502, and record the initial displacement value L0 and rotation value R0. At the starting position of the movement, loosen the locking screw 401, move the displacement slider 402 to align the end face of the rotating target 501 mounted on the displacement slider 402 with the plane of the rotating body 502, and then tighten the locking screw 401. Record the value L0 of the displacement scale 303 on the base 302 corresponding to the slider indicator mark 403 at this time, and at the same time record the value R0 indicated by the pointer 505 on the rotation scale 503.

[0042] Step S3: Set the displacement L and rotation R values ​​of the peristaltic drive device 100, and start the peristaltic drive device 100 to make the puncture needle 200 move and rotate to a new position.

[0043] Step S4: Move the rotating target 501 to align its end face with the end face of the rotating body 502, and record the displacement value L1 and rotation value R1 after the movement. Loosen the locking screw 401, move the displacement slider 402 to align the end face of the rotating target 501 mounted on the displacement slider 402 with the plane of the rotating body 502, and then tighten the locking screw 401. Record the value L1 of the displacement scale 303 on the base 302 corresponding to the slider indicator mark 403 at this time, and at the same time record the value R1 indicated by the pointer 505 on the rotation scale 503.

[0044] Step S5: Compare the absolute value of the difference between L1 and L0 with L to obtain the positioning progress error. Compare the absolute value of the difference between R1 and R0 with R to obtain the rotation progress error.

[0045] In another method for testing the performance of the brain electrode puncture module, a magnetic navigation positioning sensor is installed on the sensor mounting hole 504 of the rotating body 502, and the peristaltic drive device 100 is activated to displace and rotate the puncture needle 200 to a new position, thereby obtaining the motion parameters of the puncture needle 200.

[0046] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0047] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A performance testing device for a brain electrode puncture module, characterized in that, The device includes a base (302), a clamping mechanism (301), a rotating target (501), and a rotating body (502). The clamping mechanism (301) fixes the peristaltic drive device (100) to be tested on the base (302). The puncture needle (200) of the peristaltic drive device (100) extends in a first direction, and the rotating body (502) is fixedly installed at the end of the puncture needle (200) extending in the first direction. The rotating target (501) is movably mounted on the base (302), the rotating target (501) moves in a first direction on the base (302), and the rotating target (501) has a through hole that allows the rotating body (502) to pass through.

2. The brain electrode puncture module performance testing device as described in claim 1, characterized in that, The rotating body (502) includes a pointer (505), and the end face of the rotating target (501) is provided with a rotating scale (503).

3. The brain electrode puncture module performance testing device as described in claim 1, characterized in that, The base (302) is provided with a displacement slider (402), and the base (302) is provided with a groove that allows the displacement slider (402) to move along a first direction. The rotating target (501) is fixedly installed on the displacement slider (402).

4. The brain electrode puncture module performance testing device as described in claim 3, characterized in that, The groove on the base (302) is a recessed structure, and a guide groove (304) is provided on the side wall of the recessed groove; A locking screw (401) is detachably installed on the displacement slider (402). The end of the locking screw (401) passes through the guide groove (304) from the outside to the inside and is then screwed into the displacement slider (402).

5. The brain electrode puncture module performance testing device as described in claim 4, characterized in that, At least one set of locking screws (401) is symmetrically arranged on both sides of the displacement slider (402).

6. The brain electrode puncture module performance testing device as described in claim 3, characterized in that, The upper surface of the base (302) is provided with a displacement scale (303) along the first direction, and the displacement slider (402) is provided with a slider indicator mark (403).

7. The brain electrode puncture module performance testing device as described in claim 1, characterized in that, The rotating body (502) has a sensor mounting hole (504) reserved on it.

8. The brain electrode puncture module performance testing device as described in claim 1, characterized in that, When measuring the puncture force of the puncture needle (200), the rotating target (501) is replaced with a support (602), and a force sensor (601) is installed on the support (602). The end of the puncture needle (200) is in contact with the force sensor (601), and the puncture force of the puncture needle (200) under the drive of the peristaltic drive device (100) is measured.

9. A method for testing the performance of a brain electrode puncture module, characterized in that, The performance testing device for the brain electrode puncture module according to any one of claims 1-8 is used, and the testing method is as follows: Step S1: Fix the peristaltic drive device (100) on the base (302) and fix the rotating body (502) on the end of the puncture needle (200); Step S2: Move the rotating target (501) to align the end face of the rotating target (501) with the end face of the rotating body (502), and record the initial displacement value L0 and rotation value R0. Step S3: Set the displacement L and rotation R values ​​of the peristaltic drive device (100), and start the peristaltic drive device (100) to make the puncture needle (200) move and rotate to a new position; Step S4: Move the rotating target (501) to align the end face of the rotating target (501) with the end face of the rotating body (502), and record the displacement value L1 and rotation value R1 after the movement. Step S5: Compare the absolute value of the difference between L1 and L0 with L to obtain the positioning progress error; compare the absolute value of the difference between R1 and R0 with R to obtain the rotation progress error.

10. The method for testing the performance of the brain electrode puncture module as described in claim 9, characterized in that, The magnetic navigation positioning sensor is installed on the sensor mounting hole (504) of the rotating body (502), and the peristaltic drive device (100) is activated to make the puncture needle (200) move and rotate to a new position, thereby obtaining the motion parameters of the puncture needle (200).

Images