A clamping device with an adjustment bracket for multi-linear electrodes and a method of use

Abstract

The present invention discloses a clamping device with an adjustment bracket for multi-linear electrodes and a method for use. The present invention relates to the field of brain-computer interface technology, including an electrode clamping device, a four-degree-of-freedom adjustment bracket, a curved plate bracket, a straight plate bracket and a fixed base. The electrode clamping device is installed at the end of the curved plate bracket. The end of the curved plate bracket is provided with a through hole. The surface of the electrode clamping device is provided with a threaded hole, and the threaded hole is aligned with the through hole at the end of the curved plate bracket. The present invention designs an inwardly embedded inclined surface as the attachment and fixing surface of the flexible electrode by installing a wedge block. The purpose is to align the high-position attachment point and the low-position attachment point in the vertical direction. Similarly, in order to avoid interference, the microneedle can only move the flexible electrode outside the dotted line, that is, the space on the lower left, so that the implantable length of the electrode is not sacrificed. The length of the electrode that is peeled off from the inclined surface can be bent downward and implanted, and the electrode itself will not be stretched sideways.

Description

Technical Field

[0001] The present invention relates to the field of brain-computer interface technology, and specifically to a clamping device with an adjustment bracket for multi-linear electrodes and a method of use. Background Art

[0002] The main function of the flexible electrode clamping device and adjustment bracket is to fix the flexible neural electrode on a customized clamping block before the implantation surgery, and adjust its position in the surgical space to facilitate the subsequent surgical operators or surgical robots to operate the flexible neural electrode. It is one of the prerequisites for the smooth start of the implantation surgery. The implantation surgery is the technical basis for the research of brain science and neuroscience. The neural electrode used for signal acquisition is one of the most critical technologies in the field of brain-computer interface. It is a bridge connecting biological brain tissue and external equipment. Compared with non-invasive neural electrodes, invasive neural electrodes can directly collect neuronal signals. Due to their excellent signal quality in time and space, they have more application prospects in the field of neuroscience. Flexible neural electrodes are generally made of an elastic modulus less than 10GPa. The flexible neural electrodes themselves are easy to yield, thin in size, and under the requirement of minimally invasive implantation, multiple flexible neural electrode wires often need to be implanted into the brain tissue one by one. These pose great challenges to the implantation operation. When actually removing one of the electrode wires with tweezers or a fine needle, if the adhesion between the electrode wire and the film is too strong, the entire film will be pulled, which will in turn move the other electrode wires.

[0003] The existing multi-linear electrode with an adjustable bracket clamping device has the following defects:

[0004] 1. Patent document CN101973508B discloses an EEG dry electrode array based on flexible substrate MEMS technology in the field of micro-electromechanical technology and its preparation method. "It includes: a fixing fixture and several layers of EEG dry electrodes fixed therein, the EEG dry electrodes comprising: metal electrode microneedles and a circuit layer, and a second metal seed layer and a second polyimide layer located on both sides thereof. The surface of the metal electrode microneedles is coated with an inert metal layer, and the first polyimide layer serves as the flexible substrate for the EEG dry electrodes. The present invention has a simple process and a high yield rate; the position of the electrodes can be adjusted according to application requirements; the use of metal as the main electrode body has high mechanical strength and low impedance, and the flexible substrate has high patterning quality and good biocompatibility; the electrodes are assembled in multiple layers and fixed with a fixture to form a three-dimensional array of electrodes, which is easy to fix and has excellent shielding." However, the existing multi-linear electrode has a clamping device with an adjustable bracket. When peeling off a flexible electrode, the entire film will be pulled, which not only makes the electrode peeling more difficult, but also affects other electrode lines.

[0005] 2. Patent document CN114795249B discloses a brain-computer interface front-end device and brain electrode system, "including a control chip, a stimulation module and a test module, wherein the stimulation module is used to generate a stimulation signal, and the stimulation signal is used to stimulate the cerebral cortex through the brain electrode structure; the control chip is used to control the on-off of the channel of the brain electrode structure, and the switching input of the test signal and the stimulation signal; the test module is used to receive the test result signal sent by the control chip and perform digital-to-analog conversion on the test result signal; the test result signal is a signal generated by the control chip based on the test signal. After the device is connected to the brain electrode structure, the device can be used to stimulate and collect brain electrodes, and based on the above-mentioned test module, the control chip can be tested." However, the existing multi-linear electrode has a clamping device with an adjustable bracket, and the microneedle can only move the flexible electrode outside the dotted line, that is, the space on the lower left. This sacrifices the length of the implantable electrode that is at least equal to the length of the horizontal dotted line;

[0006] 3. Patent document CN114512853B discloses a brain electrode back-end conditioning device and a brain-computer interface, "including a back-end conditioning socket and a back-end conditioning plug, the back-end conditioning socket is connected to the back-end of the brain electrode, and the back-end conditioning plug is detachably connected to the back-end conditioning socket; the back-end conditioning socket includes a first circuit board group and a mounting bracket socket, the first circuit board group is fixed on the mounting bracket socket; the back-end conditioning plug includes a second circuit board group and a mounting bracket plug, the second circuit board group is fixed in the mounting bracket plug, and the mounting bracket plug matches the mounting bracket socket. In this way, the obtained brain electrode back-end conditioning device has the advantages of high throughput, small size and detachability", but the existing multi-linear electrode has an adjustment bracket with a clamping device that cannot save degrees of freedom and is cumbersome and inconvenient. Summary of the Invention

[0007] The purpose of the present invention is to provide a clamping device with an adjustment bracket for multi-linear electrodes and a method of use, so as to solve the technical problem raised in the above background technology that when peeling a flexible electrode, the entire film will be pulled, which not only makes the peeling of the electrode more difficult, but also affects other electrode lines.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a clamping device with an adjustment bracket for a multi-linear electrode, comprising an electrode clamping device, a four-degree-of-freedom adjustment bracket, a bent plate bracket, a straight plate bracket and a fixed base, the electrode clamping device is installed at the end of the bent plate bracket, the end of the bent plate bracket is provided with a through hole, a threaded hole is provided on the surface of the electrode clamping device, the threaded hole is aligned with the through hole at the end of the bent plate bracket, the electrode clamping device and the bent plate bracket are tightened and fixed by an angle adjustment screw, the bent plate bracket is installed at the right end of the straight plate bracket, a straight notch is provided on the surface of the bent plate bracket, a threaded hole is provided at the right end of the straight plate bracket, the bent plate bracket and the straight plate bracket are tightened and fixed by a No. 2 adjusting screw, the left end of the straight plate bracket is a U-shaped opening, the U-shaped opening is directly inserted into both sides of the fixed base, and the straight plate bracket and the fixed base are tightened and fixed by two No. 3 adjusting screws;

[0009] The electrode clamping device includes a wedge block, a rake-shaped buckle, a buckle limiting screw, a buckle limiting nut and a multi-wire flexible electrode. The wedge block provides an inwardly embedded inclined surface for attaching the multi-wire flexible electrode. When attached, the multi-wire flexible electrode suspends its end micropores outside the inclined surface to facilitate the implantation of microneedles. The wedge block is provided with a square groove at the rake-shaped buckle, and the square groove leaves installation space for the rake-shaped buckle.

[0010] Preferably, the wedge block provides an embedded inclined surface for the base member of the entire electrode clamping device, and the embedded inclined surface is used to expose the microholes at the end of the attached electrode of the multi-wire flexible electrode. The outer wall of the rake-shaped buckle is equipped with a square slot hole, and the square slot hole is used to compact the multi-wire flexible electrode. The installation guide grooves of the buckle limiting screw and the buckle limiting nut are used to limit the rake-shaped buckle.

[0011] Preferably, the multi-wire flexible electrode is clamped between the rake-shaped buckle and the wedge-shaped block, and the buckle limiting screw and the buckle limiting nut pass through the guide groove of the wedge-shaped block and the U-shaped groove of the rake-shaped buckle.

[0012] Preferably, the multi-wire flexible electrode includes a flexible electrode harness and an electrode attachment film. The flexible electrode harness consists of eight wires arranged in sequence and attached to the electrode attachment film. The electrode is attached to the clamping device as a flexible electrode harness, an electrode attachment film and a wedge block, and the rake-shaped buckle is a straight claw with eight equally spaced grooves.

[0013] Preferably, the rake-shaped buckle is used to be inserted between adjacent bundles of the flexible electrode harness, pressing the electrode attachment film onto the wedge block without interfering with the flexible electrode itself, ensuring that the electrode attachment film will not be pulled when a certain electrode harness is peeled off, and limiting the position of adjacent electrode harnesses, making the peeling of a single flexible electrode easier, and avoiding driving other electrode wires. The eight flexible electrode harnesses can be conveniently peeled off one by one by the microneedle without affecting each other.

[0014] Preferably, the position of the snap limit nut is limited by the guide groove of the wedge block, and the binding force between the snap limit screw and the snap limit nut is adjusted by screwing the snap limit screw.

[0015] Preferably, the force between the snap limit screw and the snap limit nut is transmitted to one end of the U-shaped groove of the rake snap, and then transmitted to one end of the equally spaced straight claws of the rake snap through a lever to adjust the clamping force of the rake snap on the multi-wire flexible electrode.

[0016] Preferably, the rake-shaped buckle is used to be inserted between adjacent wire bundles of a multi-wire flexible electrode, and is pressed against the inclined surface of the wedge block to limit the position of the electrode wire bundle. The surface of the wedge block is provided with a guide groove for installing a buckle limiting screw and a buckle limiting nut.

[0017] Preferably, the guide groove is used to limit the rake-shaped buckle.

[0018] Preferably, the method for using the device comprises the following steps:

[0019] Step S1: The wedge block of the electrode clamping device is tightened and fixed to the end of the bent plate bracket by an angle adjustment screw. The installation angle of the electrode clamping device along the horizontal axis can be adjusted after the angle adjustment screw is loosened. After adjusting to a suitable angle, the screw is tightened and fixed.

[0020] Step S2: The straight notch on the surface of the bent plate bracket is provided with a threaded hole at the right end of the straight plate bracket, which is tightened and fixed by the No. 2 adjusting screw. Loosen the No. 2 adjusting screw. The position adjustment range of the bent plate bracket is equal to the width of the straight notch. After adjustment, tighten the No. 2 adjusting screw again.

[0021] Step S3, the left end of the straight plate bracket is a U-shaped opening along the Y direction, which can be directly inserted into the two sides of the fixed base and tightened and fixed by two YZ-direction No. 3 adjusting screws. The YZ-direction adjustment of this device requires loosening the two YZ-direction No. 3 adjusting screws at the same time. The Y-direction position adjustment range is equal to the interval between the two YZ-direction No. 3 adjusting screws minus the length of the fixed base along the Y direction. Its Z-direction position adjustment range is not limited, and the fixing method is a clamping method. In summary, this device provides a convenient four-degree-of-freedom adjustment bracket for flexibly adjusting the position of the entire clamping device in three-dimensional space. The adjustment degrees of freedom include one angle adjustment and three XYZ displacement adjustments. The adjustment method is achieved by four butterfly screws, which are respectively composed of an angle adjustment screw, a No. 2 adjustment screw, and two No. 3 adjustment screws;

[0022] Step S4: The middle wedge block is designed with an embedded inclined surface to optimize the attachment position of the multi-wire flexible electrode, thereby optimizing the implantable electrode length. The rake-shaped buckle is designed with equally spaced grooves to limit the position of the multi-wire bundles and film of the multi-wire flexible electrode without blocking the bundles themselves, which is convenient for micro-needling to perform peeling operations on the electrodes and avoids affecting other electrode bundles when peeling a single electrode bundle. The buckle limit screw and the buckle limit nut facilitate the positioning and installation of the rake-shaped buckle. These components together realize the improved functions and effects of the clamping device.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention uses a wedge-shaped block with an embedded inclined surface as a fixing block for attachment. The improved clamping block is a wedge-shaped block, and the flexible electrode is labeled. The wedge-shaped block is designed with an inwardly embedded inclined surface as the attachment and fixing surface of the flexible electrode. The purpose is to align the high and low attachment points in the vertical direction to avoid horizontal position differences. Similarly, to avoid interference, the microneedle can only move the flexible electrode beyond the dotted line, that is, to the space on the lower left. This achieves the goal of not sacrificing the implantable length of the electrode. The length of the electrode peeled off from the inclined surface can be bent downward and implanted to the same length, and the electrode itself will not be stretched or tightened laterally.

[0025] 2. The present invention uses a rake-shaped buckle with equally spaced grooves to insert between adjacent wire bundles of a multi-wire flexible electrode. This clamps the flexible electrode's organic film against the wedge-shaped block without interfering with the flexible electrode itself. This prevents the organic film from being pulled during the peeling of a single electrode and limits the position of adjacent electrode bundles. This not only makes the peeling of a single flexible electrode easier, but also prevents the dragging of other electrode wires.

[0026] 3. The present invention is equipped with a convenient four-degree-of-freedom adjustment bracket to flexibly adjust the position of the entire clamping device in three-dimensional space, realizing the adjustment of the degrees of freedom including one angle adjustment and three XYZ displacement adjustments. The adjustment method is achieved by butterfly screws, which is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the wedge block structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the clamp structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the multi-wire flexible electrode structure of the present invention;

[0031] Figure 5This is a schematic diagram of the rake-shaped buckle structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the electrode attachment film structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the buckle limit screw structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the YZ position adjustment of the present invention;

[0035] Figure 9 Schematic diagram of the No. 3 adjusting screw of the present invention.

[0036] In the figure: 1. Electrode clamping device; 2. Angle adjustment screw; 3. Bending plate bracket; 4. No. 2 adjustment screw; 5. Straight plate bracket; 6. No. 3 adjustment screw; 7. Fixed base; 11. Wedge block; 12. Rake-shaped buckle; 13. Buckle limit screw; 14. Buckle limit nut; 15. Multi-wire flexible electrode; 151. Flexible electrode harness; 152. Electrode attachment film. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will understand this in light of the specific circumstances.

[0040] Example 1: Please refer to Figure 1 、 Figure 2 and Figure 3 The present invention provides an embodiment of a method for fixing a multi-linear electrode with an adjustment bracket, an electrode clamping device 1, a four-degree-of-freedom adjustment bracket, a bent plate bracket 3, a straight plate bracket 5 and a fixed base 7, the electrode clamping device 1 is installed at the end of the bent plate bracket 3, the end of the bent plate bracket 3 is provided with a through hole, the surface of the electrode clamping device 1 is provided with a threaded hole, the threaded hole is aligned with the through hole at the end of the bent plate bracket 3, the electrode clamping device 1 and the bent plate bracket 3 are tightened and fixed by the angle adjustment screw 2. The bent plate bracket 3 is installed at the right end of the straight plate bracket 5, the surface of the bent plate bracket 3 is provided with a straight notch, the right end of the straight plate bracket 5 is provided with a threaded hole, the bent plate bracket 3 and the straight plate bracket 5 are tightened and fixed by the No. 2 adjusting screw 4, the left end of the straight plate bracket 5 is a U-shaped opening, the U-shaped opening is directly inserted into the two sides of the fixed base 7, the straight plate bracket 5 and the fixed base 7 are tightened and fixed by two No. 3 adjusting screws 6, the electrode clamping device 1 includes a wedge block 11, a rake-shaped buckle 12, a buckle limit screw 13, a buckle limit screw The mother 14 and the multi-wire flexible electrode 15, the wedge block 11 provides an inwardly embedded inclined surface for the attachment of the multi-wire flexible electrode 15. When attached, the multi-wire flexible electrode 15 suspends its end micropores outside the inclined surface to facilitate the implantation of the microneedle. The wedge block 11 is provided with a square groove at the rake buckle 12. The square groove leaves installation space for the rake buckle 12. The device provides a wedge block 11 with an embedded inclined surface as a fixed block for attachment. The improved clamping block is the wedge block 11. The multi-wire flexible electrode is marked as 15. The wedge The shape block 11 is designed with an inwardly embedded inclined surface as the attachment and fixing surface of the multi-line flexible electrode 15. The purpose is to align the high-position attachment point and the low-position attachment point in the vertical direction to avoid horizontal position difference. In order to avoid interference, the microneedle can only move the multi-line flexible electrode 15 beyond the dotted line, that is, the space on the lower left, so that the implantable length of the electrode is not sacrificed. The length of the electrode can be bent downward and implanted as long as it is peeled off from the inclined surface, and the electrode itself will not be pulled sideways or tightened.

[0041] Example 2: Please refer to Figure 4 、 Figure 5 and Figure 6The present invention provides an embodiment: the wedge block 11 provides an embedded inclined surface for the base member of the entire electrode clamping device 1, the embedded inclined surface is used for the attachment electrode end of the multi-wire flexible electrode 15 to expose the microhole, the outer wall of the rake-shaped buckle 12 is installed with a square slot hole, the square slot hole is used to press the multi-wire flexible electrode 15, the mounting guide groove of the buckle limiting screw 13 and the buckle limiting nut 14 is used to limit the rake-shaped buckle 12, and the multi-wire flexible electrode 15 is clamped between the rake-shaped buckle 12 and the wedge-shaped buckle Block 11, the buckle limit screw 13 and the buckle limit nut 14 pass through the guide groove of the wedge block 11 and the U-shaped groove of the rake buckle 12, the multi-wire flexible electrode 15 includes a flexible electrode harness 151 and an electrode attachment film 152, the flexible electrode harness 151 is eight and is sequentially attached to the electrode attachment film 152, the electrode in the clamping device is attached to the flexible electrode harness 151, the electrode attachment film 152 and the wedge block 11, the rake buckle 12 is eight equally spaced The straight claws of the partition groove and the rake-shaped buckle 12 are used to insert between the adjacent bundles of the flexible electrode harness 151, and press the electrode attachment film 152 onto the wedge block 11 without interfering with the flexible electrode itself, thereby ensuring that the electrode attachment film 152 will not be pulled when a certain electrode harness is peeled off, and limiting the position of the adjacent electrode harness, making the peeling of a single flexible electrode easier, and avoiding driving other electrode wires. The eight flexible electrode harnesses 151 can be conveniently peeled off one by one by the microneedle without affecting each other. The present device provides a rake-shaped buckle 12 with equally spaced grooves, which is used to insert between the adjacent bundles of the multi-wire flexible electrode 15, and press the organic film of the flexible electrode onto the wedge block 11 without interfering with the flexible electrode itself, thereby ensuring that the organic film will not be pulled when a certain electrode is peeled off, and limiting the position of the adjacent electrode harness, not only making the peeling of a single flexible electrode easier, but also avoiding driving other electrode wires.

[0042] Example 3: Please refer to Figure 7 、 Figure 8 and Figure 9, an embodiment provided by the present invention: the orientation of the snap limit nut 14 is limited by the guide groove of the wedge block 11, and the binding force between the snap limit screw 13 and the snap limit nut 14 is adjusted by screwing the snap limit screw 13, and the force between the snap limit screw 13 and the snap limit nut 14 is transmitted to one end of the U-shaped groove of the rake buckle 12, and then transmitted to one end of the equally spaced straight claws of the rake buckle 12 through the form of a lever, thereby adjusting the pressing force of the rake buckle 12 on the multi-wire flexible electrode 15. The rake buckle 12 is used to insert The adjacent wire bundles of the multi-wire flexible electrode 15 are pressed against the inclined surface of the wedge block 11 to limit the position of the electrode wire bundle. The surface of the wedge block 11 is provided with a guide groove for installing a snap limit screw 13 and a snap limit nut 14. The guide groove is used to limit the rake-shaped snap 12. This device provides a convenient four-degree-of-freedom adjustment bracket for flexibly adjusting the position of the entire clamping device in three-dimensional space, realizing the adjustment of the degrees of freedom including one angle adjustment and three XYZ displacement adjustments. The adjustment method is achieved by butterfly screws, which is simple and fast.

[0043] The method for using the clamping device comprises the following steps:

[0044] Step S1: The wedge block 11 of the electrode clamping device 1 is tightened and fixed to the end of the bent plate bracket 3 by the angle adjustment screw 2. The installation angle of the electrode clamping device 1 along the horizontal axis can be adjusted after the angle adjustment screw 2 is loosened. After adjusting to a suitable angle, it is tightened and fixed;

[0045] Step S2: The straight notch on the surface of the bent plate bracket 3 and the right end of the straight plate bracket 5 are provided with a threaded hole, which is tightened and fixed by the No. 2 adjusting screw 4. Loosen the No. 2 adjusting screw 4. The position adjustment range of the bent plate bracket 3 is equal to the width of the straight notch. After adjustment, tighten the No. 2 adjusting screw 4 again.

[0046] Step S3, the left end of the straight plate bracket 5 is a U-shaped opening along the Y direction, which can be directly inserted into the two sides of the fixed base 7 and tightened and fixed by two YZ-direction No. 3 adjusting screws 6. The YZ-direction adjustment of this device requires loosening the two YZ-direction No. 3 adjusting screws 6 at the same time. The Y-direction position adjustment range is equal to the interval between the two YZ-direction No. 3 adjusting screws 6 minus the length of the fixed base 7 along the Y direction. The Z-direction position adjustment range is not limited, and the fixing method is a clamping method. In summary, this device provides a convenient four-degree-of-freedom adjustment bracket for flexibly adjusting the position of the entire clamping device in three-dimensional space. The adjustment degrees of freedom include one angle adjustment and three XYZ displacement adjustments. The adjustment method is achieved by four butterfly screws, which are composed of an angle adjustment screw 2, a No. 2 adjustment screw 4, and two No. 3 adjustment screws 6;

[0047] Step S4, the middle wedge block 11 is designed with an embedded inclined surface to optimize the attachment position of the multi-wire flexible electrode 15, thereby optimizing the implantable electrode length. The rake-shaped buckle 12 is designed with equally spaced grooves to limit the position of the multi-wire bundles and film of the multi-wire flexible electrode 15 without blocking the bundles themselves, which is convenient for micro-needling to perform peeling operations on the electrodes and avoids affecting other electrode bundles when peeling a single electrode bundle. The buckle limiting screw 13 and the buckle limiting nut 14 facilitate the positioning and installation of the rake-shaped buckle 12. These components together realize the improved functions and effects of the clamping device.

[0048] Working principle: the wedge block 11 of the electrode clamping device 1 is tightened and fixed to the end of the bent plate bracket 3 by the angle adjustment screw 2. The installation angle of the electrode clamping device 1 along the horizontal axis can be adjusted after loosening the angle adjustment screw 2. After adjusting to the appropriate angle, tighten it and fix it. The straight slot on the surface of the bent plate bracket 3 and the right end of the straight plate bracket 5 are provided with a threaded hole, which is tightened and fixed by the No. 2 adjusting screw 4. Loosen the No. 2 adjusting screw 4. The position adjustment range of the bent plate bracket 3 is equal to the width of the straight slot. After adjustment, tighten the No. 2 adjusting screw 4. The left end of the straight plate bracket 5 is a U-shaped opening along the Y direction, which can be directly inserted into the two sides of the fixed base 7 and tightened and fixed by two YZ-direction No. 3 adjusting screws 6. The YZ-direction adjustment of this device requires loosening the two YZ-direction No. 3 adjusting screws 6 at the same time. The Y-direction position adjustment range is equal to the interval between the two YZ-direction No. 3 adjusting screws 6 minus the length of the fixed base 7 along the Y direction. Its Z-direction position adjustment range is unlimited. The fixing method is a clamping method. In summary, this device provides a convenient four-degree-of-freedom adjustment bracket, which is used to flexibly adjust the position of the entire clamping device in three-dimensional space. The adjustment degrees of freedom include an angle adjustment and three XYZ displacement adjustments. The adjustment method is realized by four butterfly screws, and the four butterfly screws are composed of an angle adjustment screw 2, a No. 2 adjustment screw 4, and two No. 3 adjustment screws 6. The middle wedge block 11 is designed with an embedded inclined surface to optimize the attachment position of the multi-wire flexible electrode 15, thereby optimizing the implantable electrode length. The rake-shaped buckle 12 is designed with equally spaced grooves to limit the multi-wire bundles and film positions of the multi-wire flexible electrode 15 without blocking the bundle itself, which is convenient for micro-needle peeling operation on the electrode and avoids affecting other electrode bundles when peeling a single electrode bundle. The buckle limit screw 13 and the buckle limit nut 14 facilitate the positioning and installation of the rake-shaped buckle 12. These components together realize the improved functions and effects of this clamping device.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A clamping device with an adjustment bracket for a multi-linear electrode, comprising an electrode clamping device (1), a four-degree-of-freedom adjustment bracket, a curved plate bracket (3), a straight plate bracket (5) and a fixed base (7), characterized in that: The electrode clamping device (1) is installed at the end of the bent plate bracket (3), the end of the bent plate bracket (3) is provided with a through hole, the surface of the electrode clamping device (1) is provided with a threaded hole, the threaded hole is aligned with the through hole at the end of the bent plate bracket (3), the electrode clamping device (1) and the bent plate bracket (3) are tightened and fixed by the angle adjustment screw (2), the bent plate bracket (3) is installed at the right end of the straight plate bracket (5), the surface of the bent plate bracket (3) is provided with a straight notch, the right end of the straight plate bracket (5) is provided with a threaded hole, the bent plate bracket (3) and the straight plate bracket (5) are tightened and fixed by the No. 2 adjustment screw (4), the left end of the straight plate bracket (5) is a U-shaped opening, the U-shaped opening is directly inserted into the two sides of the fixed base (7), the straight plate bracket (5) and the fixed base (7) are tightened and fixed by two No. 3 adjustment screws (6); The electrode clamping device (1) comprises a wedge block (11), a rake-shaped buckle (12), a buckle limiting screw (13), a buckle limiting nut (14) and a multi-wire flexible electrode (15). The wedge block (11) provides an inwardly embedded inclined surface for attaching the multi-wire flexible electrode (15). When attached, the multi-wire flexible electrode (15) suspends its end micropore outside the inclined surface to facilitate microneedle implantation. The wedge block (11) is provided with a square groove at the rake-shaped buckle (12), and the square groove leaves installation space for the rake-shaped buckle (12). The wedge block (11) provides an embedded inclined surface for the base member of the entire electrode clamping device (1), and the embedded inclined surface is used for the exposed micropores at the end of the attached electrode of the multi-wire flexible electrode (15); the outer wall of the rake-shaped buckle (12) is provided with a square slot hole, and the square slot hole is used to press the multi-wire flexible electrode (15); the mounting guide groove of the buckle limit screw (13) and the buckle limit nut (14) is used to limit the rake-shaped buckle (12); The multi-wire flexible electrode (15) is clamped between a rake-shaped buckle (12) and a wedge-shaped block (11), and the rake-shaped buckle (12) is used to be inserted between adjacent wire bundles of the flexible electrode wire bundle (151).

2. The clamping device with an adjustable bracket for multi-linear electrodes according to claim 1, characterized in that: The buckle limiting screw (13) and the buckle limiting nut (14) pass through the guide groove of the wedge block (11) and the U-shaped groove of the rake buckle (12).

3. The clamping device with an adjustment bracket for multi-linear electrodes according to claim 2, characterized in that: The multi-wire flexible electrode (15) comprises a flexible electrode harness (151) and an electrode attachment film (152), wherein the flexible electrode harness (151) is eight in number and is sequentially arranged and attached to the electrode attachment film (152), and the order in which the electrodes are attached to the clamping device is the flexible electrode harness (151), the electrode attachment film (152) and the wedge block (11), and the rake-shaped buckle (12) is a straight claw with eight equally spaced grooves.

4. The clamping device with an adjustment bracket for multi-linear electrodes according to claim 3, characterized in that: The electrode attachment film (152) is pressed tightly onto the wedge block (11) without interfering with the flexible electrode itself, ensuring that the electrode attachment film (152) will not be pulled when a certain electrode wire bundle is peeled off, and limiting the position of adjacent electrode wire bundles, making it easier to peel off a single flexible electrode, and avoiding dragging other electrode wires. The eight flexible electrode wire bundles (151) can be conveniently peeled off one by one by the microneedle without affecting each other.

5. The clamping device with an adjustable bracket for multi-linear electrodes according to claim 1, characterized in that: The position of the snap limit nut (14) is limited by the guide groove of the wedge block (11), and the coupling force between the snap limit screw (13) and the snap limit nut (14) is adjusted by screwing the snap limit screw (13).

6. The clamping device with an adjustment bracket for multi-linear electrodes according to claim 5, characterized in that: The force between the snap limit screw (13) and the snap limit nut (14) is transmitted to one end of the U-shaped groove of the rake-shaped snap (12), and then transmitted to one end of the equally spaced straight claws of the rake-shaped snap (12) through the form of a lever, thereby adjusting the pressing force of the rake-shaped snap (12) on the multi-wire flexible electrode (15).

7. The clamping device with an adjustable bracket for multi-linear electrodes according to claim 1, characterized in that: The rake-shaped buckle (12) is used to be inserted between adjacent wire bundles of the multi-wire flexible electrode (15), and is pressed against the inclined surface of the wedge-shaped block (11) to limit the position of the electrode wire bundle. The surface of the wedge-shaped block (11) is provided with a guide groove for installing a buckle limit screw (13) and a buckle limit nut (14).

8. The clamping device with an adjustment bracket for multi-linear electrodes according to claim 7, characterized in that: The guide groove is used to limit the rake-shaped buckle (12).

9. A method for using a clamping device with an adjustable bracket for multi-linear electrodes, applicable to the clamping device with an adjustable bracket for multi-linear electrodes according to any one of claims 1 to 8, characterized in that: The method of using the device includes the following steps: Step S1, the wedge block (11) of the electrode clamping device (1) is tightened and fixed to the end of the bent plate bracket (3) by means of the angle adjustment screw (2), and the installation angle of the electrode clamping device (1) along the horizontal axis can be adjusted after the angle adjustment screw (2) is loosened, and then tightened and fixed after being adjusted to a suitable angle; Step S2, the straight notch on the surface of the bent plate bracket (3), the right end of the straight plate bracket (5) is provided with a threaded hole, which is tightened and fixed by the No. 2 adjusting screw (4), and the No. 2 adjusting screw (4) is loosened. The position adjustment range of the bent plate bracket (3) is equal to the width of the straight notch. After adjustment, tighten the No. 2 adjusting screw (4); Step S3, the left end of the straight plate bracket (5) is a U-shaped opening along the Y direction, which can be directly inserted into the two sides of the fixed base (7) and tightened and fixed by two YZ direction No. 3 adjusting screws (6). The YZ direction adjustment of this device requires loosening the two YZ direction No. 3 adjusting screws (6) at the same time. The Y direction position adjustment range is equal to the interval between the two YZ direction No. 3 adjusting screws (6) minus the length of the fixed base (7) along the Y direction. Its Z direction position adjustment range is not limited. The fixing method is a clamping method. A four-degree-of-freedom adjustment bracket is provided to flexibly adjust the position of the entire clamping device in three-dimensional space. The adjustment degrees of freedom include one angle adjustment and three XYZ displacement adjustments. The adjustment method is realized by four butterfly screws, and the four butterfly screws are composed of an angle adjustment screw (2), a No. 2 adjustment screw (4), and two No. 3 adjustment screws (6); Step S4, the middle wedge block (11) is designed with an embedded inclined surface to optimize the attachment position of the multi-wire flexible electrode (15), thereby optimizing the implantable electrode length. The rake-shaped buckle (12) is designed with equally spaced grooves to limit the position of the multi-wire bundles and the film of the multi-wire flexible electrode (15), without blocking the bundles themselves, which is convenient for micro-needling to perform the stripping operation on the electrode and avoids affecting other electrode bundles when stripping a single electrode bundle. The buckle limit screw (13) and the buckle limit nut (14) facilitate the positioning and installation of the rake-shaped buckle (12).

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