Multi-linear-electrode-oriented clamping device with adjusting support and using method of multi-linear-electrode-oriented clamping device

Abstract

The invention discloses a multi-linear-electrode-oriented clamping device with an adjusting support and a use method, and relates to the technical field of brain-computer interfaces, the multi-linear-electrode-oriented clamping device comprises an electrode clamping device, a four-degree-of-freedom adjusting support, a bent plate support, a straight plate support and a fixed base, the electrode clamping device is installed at the tail end of the bent plate support, and the straight plate support is installed at the tail end of the bent plate support; a through hole is formed in the tail end of the bent plate support, a threaded hole is formed in the surface of the electrode clamping device, and the threaded hole is aligned with the through hole in the tail end of the bent plate support. According to the invention, by installing the wedge-shaped block, an inclined surface embedded inwards is designed as an attaching and fixing surface of the flexible electrode, so that a high-position attaching point and a low-position attaching point are aligned in the vertical direction, and in order to avoid interference, the microneedle can only move the flexible electrode to the outside of a dotted line, namely a space at the lower left part, so that the flexible electrode can be attached to the flexible electrode. The implantable length of the electrode is not sacrificed, the electrode can be bent and implanted downwards according to the length of the stripped electrode from the inclined plane, and the condition that the electrode is laterally pulled and tightened does not exist.

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 use method thereof. 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 elastic modulus less than 10GPa In addition, due to the need for the most minimally invasive implantation, multiple flexible neural electrode wires often need to be implanted one by one into the brain tissue. This poses a huge challenge to the implantation operation. When one of the electrode wires is actually removed with tweezers or a fine needle, if the adhesion between the electrode wire and the film is too great, the entire film will be pulled, which will in turn move the other electrode wires.

[0003] The existing multi-linear electrode has the following defects in the clamping device of the adjusting bracket: 1. Patent document CN101973508B discloses an EEG dry electrode array based on flexible substrate MEMS technology in the field of micro-electromechanical technology and a preparation method thereof, "including: a fixing fixture and several layers of EEG dry electrodes fixed therein, the EEG dry electrode includes: a metal electrode microneedle 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 microneedle is coated with an inert metal layer, and the first polyimide layer is a flexible substrate of the EEG dry electrode. The present invention has a simple process and a high yield rate; the position of the electrode can be changed according to the application requirements; metal is used as the electrode body, which has high mechanical strength, low impedance, high flexible substrate graphic quality, and good biocompatibility; multi-layer assembly of electrodes is adopted and fixed with a fixture to form a three-dimensional array of electrodes, which is easy to fix and has good shielding", but 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 drives and affects other electrode lines; 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, and the control chip is used to control the on-off of the channel of the brain electrode structure, as well as 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 stimulation and collection of brain electrodes can be achieved based on the device, and the control chip can be tested based on the above-mentioned test module", but the existing multi-linear electrode has a clamping device for adjusting the bracket. 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 as long as the length of the horizontal dotted line; 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 buckle frame socket, the first circuit board group is fixed on the mounting buckle frame socket; the back-end conditioning plug includes a second circuit board group and a mounting buckle frame plug, the second circuit board group is fixed in the mounting buckle frame plug, and the mounting buckle frame plug matches the mounting buckle frame 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 adjusting bracket with a clamping device that cannot save degrees of freedom and is cumbersome and inconvenient. Summary of the invention

[0004] The purpose of the present invention is to provide a clamping device with an adjustable 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 off a flexible electrode, the entire film will be pulled, which not only makes the peeling of the electrode more difficult, but also leads to affecting other electrode lines.

[0005] 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, wherein the electrode clamping device is installed at the end of the bent plate bracket, a through hole is provided at the end of the bent plate bracket, 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 angle adjustment screws, 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 adjustment screw, the left end of the straight plate bracket is a U-shaped opening, the U-shaped opening is directly inserted into the two sides of the fixed base, and the straight plate bracket and the fixed base are tightened and fixed by two No. 3 adjustment screws; The electrode clamping device includes a wedge block, a rake-shaped buckle, a buckle limit screw, a buckle limit 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 terminal micropores outside the inclined surface to facilitate the implantation of the microneedle. The wedge block is provided with a square groove at the rake-shaped buckle, and the square groove leaves an installation space for the rake-shaped buckle.

[0006] 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 square slot holes, and the square slot holes are used to clamp the multi-wire flexible electrode. The installation guide grooves of the buckle limit screws and the buckle limit nuts are used to limit the rake-shaped buckle.

[0007] 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.

[0008] 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.

[0009] 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, thereby 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.

[0010] Preferably, the position of the snap-fit ​​limiting nut is limited by the guide groove of the wedge block, and the binding force between the snap-fit ​​limiting screw and the snap-fit ​​limiting nut is adjusted by screwing the snap-fit ​​limiting screw.

[0011] Preferably, the force between the buckle limit screw and the buckle limit nut is transmitted to one end of the U-shaped groove of the rake buckle, and then transmitted to one end of the equally spaced straight claws of the rake buckle through a lever to adjust the clamping force of the rake buckle on the multi-wire flexible electrode.

[0012] 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 guide grooves for installing buckle limit screws and buckle limit nuts.

[0013] Preferably, the guide groove is used to limit the rake-shaped buckle.

[0014] Preferably, the method for using the device comprises the following steps: 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, and the installation angle of the electrode clamping device along the horizontal axis can be adjusted after the angle adjustment screw is loosened, and then tightened and fixed after adjusting to a suitable angle; Step S2, the straight notch on the surface of the bent plate bracket, the right end of the straight plate bracket is provided with a threaded hole, which is tightened and fixed by the No. 2 adjusting screw, and the No. 2 adjusting screw is loosened. The position adjustment range of the bent plate bracket is equal to the width of the straight notch, and the No. 2 adjusting screw is tightened after adjustment; 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 the 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. The Z-direction position adjustment range is not limited, and the fixing method is a clamping method. In summary, the 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 realized by four butterfly screws, and the four butterfly screws are respectively composed of an angle adjustment screw, a No. 2 adjustment screw, and two No. 3 adjustment screws; 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 the film of the multi-wire flexible electrode without blocking the bundles themselves, which is convenient for the micro-needle to perform stripping operations on the electrodes and avoids affecting other electrode bundles when stripping a single electrode bundle; the buckle limit screw and the buckle limit nut facilitate the positioning and installation of the rake-shaped buckle, and these components together realize the improved functions and effects of the clamping device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a wedge-shaped block with an embedded inclined surface as a fixed block for attachment. The improved clamping block is a wedge-shaped block, and the flexible electrode is marked as. The wedge-shaped block is designed with an inwardly embedded inclined surface as the attachment and fixing surface of the flexible electrode, in order to align the high-position attachment point and the low-position attachment point in the vertical direction, avoiding the horizontal position difference. In order to avoid interference, the microneedle can only move the flexible electrode outside the dotted line, that is, the space at the lower left, so that the implantable length of the electrode is not sacrificed. 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 stretched sideways. 2. The present invention installs a rake-shaped buckle with equally spaced grooves, which is used to insert between adjacent wire bundles of a multi-wire flexible electrode, and presses the organic film of the flexible electrode onto the wedge block 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 wire bundles, which not only makes the peeling of a single flexible electrode easier, but also avoids driving other electrode wires; 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, and realizes the adjustment 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

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the wedge block structure of the present invention; Figure 3 It is a schematic diagram of the clamp structure of the present invention; Figure 4 It is a schematic diagram of the multi-wire flexible electrode structure of the present invention; Figure 5 It is a schematic diagram of the rake-shaped buckle structure of the present invention; Figure 6 It is a schematic diagram of the electrode attachment film structure of the present invention; Figure 7 It is a schematic diagram of the buckle limit screw structure of the present invention; Figure 8 It is a schematic diagram of YZ position adjustment of the present invention; Fig. 9 It is a schematic diagram of the No. 3 adjusting screw of the present invention.

[0017] In the figure: 1. electrode clamping device; 2. angle adjustment screw; 3. bent 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

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, it can be understood according to the specific situation.

[0021] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3, an embodiment of the present invention: a clamping device with an adjustment bracket for a multi-linear electrode, 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 an 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 a 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 includes a wedge block 11, a rake buckle 12, a buckle limit screw 13, a buckle The limiting nut 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 terminal micropore outside the inclined surface to facilitate the implantation of the microneedle. The wedge block 11 is provided with a square groove at the rake-shaped buckle 12, and the square groove leaves an installation space for the rake-shaped buckle 12. The present 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, and the flexible electrode is marked as 15. The wedge block 11 is designed with an inwardly embedded inclined surface as the attachment and fixing surface of the flexible electrode 15, in order to align the high-position attachment point and the low-position attachment point in the vertical direction to avoid horizontal position difference. Similarly, in order to avoid interference, the microneedle can only move the flexible electrode 15 beyond the dotted line, that is, the space at the lower left, so as to achieve the implantable length of the electrode without sacrificing the electrode. 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 side-pulled and tightened.

[0022] 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, and the embedded inclined surface is used for the multi-wire flexible electrode 15 to be attached to the electrode end to expose the microhole, the outer wall of the rake-shaped buckle 12 is installed with a square slot hole, and the square slot hole is used to press the multi-wire flexible electrode 15, and the installation guide groove of the buckle limit screw 13 and the buckle limit 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 The clamping device is provided between the wedge 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 wires arranged in sequence and attached to the electrode attachment film 152, the electrode is attached to the flexible electrode harness 151, the electrode attachment film 152 and the wedge block 11, the rake buckle 12 is eight wires at equal intervals The straight claws of the partition groove and the rake-shaped buckle 12 are used to be inserted between adjacent bundles of the flexible electrode harness 151, and the electrode attachment film 152 is pressed against the wedge block 11 without interfering with the flexible electrode itself, so as to ensure that the electrode attachment film 152 will not be pulled when a certain electrode harness is peeled off, and the position of the adjacent electrode harness is limited, so that the peeling of a single flexible electrode is easier, and the driving of other electrode wires is avoided. 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 be inserted between adjacent bundles of the multi-wire flexible electrode 15, and the organic film of the flexible electrode is pressed against the wedge block 11 without interfering with the flexible electrode itself, so as to ensure that the organic film will not be pulled when a certain electrode is peeled off, and the position of the adjacent electrode harness is limited, so that the peeling of a single flexible electrode is easier, and the driving of other electrode wires is avoided.

[0023] Example 3: Please refer to Figure 7 , Figure 8 and Fig. 9, an embodiment provided by the present invention: the position of the buckle limit nut 14 is limited by the guide groove of the wedge block 11, and the binding force between the buckle limit screw 13 and the buckle limit nut 14 is adjusted by screwing the buckle limit screw 13, and the force between the buckle limit screw 13 and the buckle 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, so as to adjust the pressing force of the rake buckle 12 on the multi-wire flexible electrode 15, and the rake buckle 12 is used to insert multiple The adjacent wire bundles of the 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 buckle limit screw 13 and a buckle limit nut 14. The guide groove is used to limit the rake-shaped buckle 12. The device provides a convenient four-degree-of-freedom adjustment bracket for flexibly adjusting the position of the entire clamping device in three-dimensional space, and realizes the adjustment degrees of freedom including one angle adjustment and three XYZ displacement adjustments. The adjustment methods are all achieved by butterfly screws, which is simple and fast.

[0024] The method for using the clamping device comprises 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 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 adjusting 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, 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, and tighten the No. 2 adjusting screw 4 after adjustment; 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 the 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, the 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 an angle adjustment and three XYZ displacement adjustments. The adjustment method is realized by four butterfly screws, and the four butterfly screws are respectively 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 multi-wire bundles and film positions of the multi-wire flexible electrode 15 without blocking the bundles themselves, which is convenient for micro-needling to perform stripping operations on the electrodes 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, and these components together realize the improved functions and effects of the clamping device.

[0025] 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 the angle adjustment screw 2 is loosened, and it is tightened and fixed after adjusting to a suitable angle. 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. There is no limit to the Z-direction position adjustment range. The fixing method is a clamping method. In summary, the 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 respectively 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, and does not block the bundle itself, which is convenient for the micro-needle to perform stripping operations 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. These components together realize the improved functions and effects of the clamping device.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered 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 an 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 a 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), and 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 limit screw (13), a buckle limit 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 terminal 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-shaped buckle (12), and the square groove leaves installation space for the rake-shaped buckle (12).

2. A clamping device with an adjustable bracket for multi-linear electrodes according to claim 1, characterized in that: 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 to expose the microhole at the end of the attached electrode of the multi-wire flexible electrode (15). The outer wall of the rake-shaped buckle (12) is installed with a square slot hole, and the square slot hole is used to press the multi-wire flexible electrode (15). The installation guide groove of the buckle limit screw (13) and the buckle limit nut (14) is used to limit the rake-shaped buckle (12).

3. A clamping device with an adjustable bracket for multi-linear electrodes according to claim 2, characterized in that: The multi-wire flexible electrode (15) is clamped between the rake-shaped buckle (12) and the wedge-shaped block (11), and the buckle limit screw (13) and the buckle limit nut (14) pass through the guide groove of the wedge-shaped block (11) and the U-shaped groove of the rake-shaped buckle (12).

4. A clamping device with an adjustable bracket for multi-linear electrodes according to claim 3, characterized in that: The multi-wire flexible electrode (15) comprises a flexible electrode harness (151) and an electrode attachment film (152); the flexible electrode harness (151) comprises eight wires arranged in sequence and attached to the electrode attachment film (152); the electrode is attached to the clamping device as the flexible electrode harness (151), the electrode attachment film (152) and the wedge block (11); and the rake buckle (12) comprises eight straight claws with equally spaced grooves.

5. A clamping device with an adjustable bracket for multi-linear electrodes according to claim 4, characterized in that: The rake-shaped buckle (12) is used to be inserted between adjacent bundles of the flexible electrode bundle (151) to 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 bundle is peeled off, and limiting the position of adjacent electrode bundles, making it easier to peel off a single flexible electrode and avoiding dragging other electrode wires. The eight flexible electrode bundles (151) can be conveniently peeled off one by one by the microneedle without affecting each other.

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

7. The clamping device with an adjustable bracket for multi-linear electrodes according to claim 5, characterized in that: The force between the buckle limit screw (13) and the buckle 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) in the form of a lever, so as to adjust the pressing force of the rake buckle (12) on the multi-wire flexible electrode (15).

8. 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 a multi-wire flexible electrode (15) and pressed against the inclined surface of a wedge-shaped block (11) to limit the position of the electrode wire bundles. 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).

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

10. A method for using a clamping device with an adjustable bracket for multi-linear electrodes, applicable to a clamping device with an adjustable bracket for multi-linear electrodes as claimed in any one of claims 1 to 9, characterized in that: The method of using the device comprises 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, a straight slot on the surface of the bent plate bracket (3), a threaded hole is provided at the right end of the straight plate bracket (5), and the second adjusting screw (4) is tightened and fixed, and the second adjusting screw (4) is loosened. The position adjustment range of the bent plate bracket (3) is equal to the width of the straight slot, and the second adjusting screw (4) is tightened after adjustment; 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 the 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. The fixing method is a clamping method. In summary, the 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 an angle adjustment and three XYZ displacement adjustments. The adjustment method is realized by four butterfly screws, and the four butterfly screws are respectively 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 multi-wire bundles and film positions of the multi-wire flexible electrode (15) without blocking the bundles themselves, which is convenient for micro-needling to perform stripping operations on the electrodes 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). These components together realize the improved functions and effects of the clamping device.

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