阅读说明：本技术 一种适应不同人手臂尺寸的非侵入式多通道电极阵列 (Non-invasive multichannel electrode array suitable for different human arm sizes ) 是由 康晓洋 张学泽 赖志平 方涛 刘碧珊 王昶茹 王守岩 王洪波 张立华 于 2021-08-07 设计创作，主要内容包括：本发明属于医用器械技术领域,具体为一种适应不同人手臂尺寸的非侵入式多通道电极阵列。本发明多通道电极阵列包括：接口、柔性电路板、电极、引线、水凝胶贴片；接口可以通过转接线与不同的电生理工作站连接,可以进行表面肌电信号采集,也可以进行手功能康复训练。柔性电极阵列长度超出实际使用需求时,可以从尾端剪去多余部分,不影响电极阵列的性能。水凝胶贴片粘在柔性电极阵列的电刺激靶点电极上,并且贴有水凝胶贴片的一侧以环绕的方式贴在手臂皮肤上。本发明能够适配不同患者的手臂尺寸,实现个体快速穿戴,减少电极阵列使用前准备时间；可以适配不同的电生理工作站；安全性高,有利于患者康复。(The invention belongs to the technical field of medical instruments, and particularly relates to a non-invasive multi-channel electrode array suitable for different sizes of human arms. The multi-channel electrode array of the present invention comprises: the device comprises an interface, a flexible circuit board, electrodes, leads and a hydrogel patch; the interface can be connected with different electrophysiology workstations through the patch cord, can carry out surface electromyography signal acquisition, also can carry out hand function rehabilitation training. When the length of the flexible electrode array exceeds the actual use requirement, redundant parts can be cut off from the tail end, and the performance of the electrode array is not influenced. The hydrogel patch is adhered to the electrical stimulation target electrode of the flexible electrode array, and one side, to which the hydrogel patch is adhered, is adhered to the skin of the arm in a surrounding manner. The electrode array can be adapted to the sizes of the arms of different patients, so that the individual can wear the electrode array quickly, and the preparation time before the electrode array is used is reduced; different electrophysiology workstations can be adapted; high safety and is beneficial to the rehabilitation of patients.)

1. A non-invasive multichannel electrode array for accommodating different human arm sizes, comprising: the device comprises an interface, a flexible circuit board, electrodes, electrode leads and hydrogel patches; wherein:

the electrodes are arranged on the strip-shaped flexible circuit board and are arranged in a row to form an electrode array; the size and the mutual interval of the two parts are adjusted according to the actual demand condition;

the interface is located the one end of strip-shaped flexible circuit board for be connected with the peripheral hardware: the electrode lead is used for leading out signals collected by the electrode;

the hydrogel patch is used for being adhered to an electric stimulation target electrode of the flexible electrode array, and one side, to which the hydrogel patch is adhered, is adhered to the skin of an arm in a surrounding mode.

2. The non-invasive multichannel electrode array according to claim 1, wherein the interface is connected with external devices and connected with different electrophysiology workstations through patch cords; when the electric hand stimulation device is connected with the signal acquisition workstation, surface electromyogram signal acquisition can be carried out, and when the electric hand stimulation device is connected with the electric stimulator, hand function rehabilitation training can be carried out.

3. The non-invasive multi-channel electrode array according to claim 1, wherein the flexible circuit board has a length of 10-40 cm and a width in the range of 0.5-4 cm.

4. A non-invasive multi-channel electrode array according to claim 1, 2 or 3, wherein the flexible circuit board is hollowed with rectangular grooves for reducing structural rigidity of the electrode array.

5. A non-invasive multi-channel electrode array according to claim 4, wherein the electrodes in the electrode array are numbered sequentially from 1, starting from the interface end of the strip-shaped flexible circuit board; and defines: the interface end of the multi-channel electrode array is a head end, and the other end of the multi-channel electrode array is a tail end;

the diameter range of the electrodes is 1-38 mm, the mutual spacing range is 2-20 mm, the distance range from the long edges of the flexible circuit board is 2.5-20 mm, the distance range from the head end electrode to the flexible circuit board is 10-50 mm, and the distance range from the tail end electrode to the flexible circuit board is 2-40 mm.

6. The non-invasive multichannel electrode array according to claim 5, wherein the electrode leads are spaced 0.01-1 mm apart on the same side of the electrode array, and the lead of the outermost electrode of the electrode array is spaced 0.05-5 mm from the proximal long side of the flexible circuit board.

7. The non-invasive multichannel electrode array according to claim 6, characterized in that the leads of the electrodes with the larger number are closer to the outside; therefore, when the length of the flexible electrode array exceeds the actual use requirement, the redundant part is cut from the tail end, and the performance of the electrode array is not influenced.

8. The non-invasive multichannel electrode array according to claim 7, wherein the hydrogel patch is applied to the skin of the arm in a circumferential manner at an angle in the range of 0-90 ° to the axis of the arm.

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a non-invasive multi-channel electrode array suitable for different sizes of human arms.

Background

Over the course of several 10 years of development, researchers have developed noninvasive multi-channel electrode arrays for contacting arm musculature, which have been developed from single channels to multiple channels, and which have improved the robustness of the electrode arrays. But at present, the multi-channel functional electrical stimulation system is not highly wearable.

It was found by prior art search that Marchi, C.De et al, in Journal of neuro engineering and Rehabilitation 13 (2016), published as "Multi-contact functional electronic simulation for hand manipulation" of electronic mechanical drive identification of the optical simulation site, proposed a Multi-channel electrode array that was relatively fixed in position and unable to fit users of different arm sizes. The same problem exists with a Multi-channel electrode array as mentioned in IEEE Transactions on Neural Systems and regeneration Engineering 26 (2018) published as "A week Multi-Site System for NMES-Based Function retrieval.

Disclosure of Invention

The invention aims to provide a noninvasive multi-channel electrode array which is convenient to wear and strong in adaptability and adapts to different sizes of human arms, so that the workload of a clinician is relieved, and the rehabilitation of a patient is facilitated.

The invention provides a non-invasive multi-channel electrode array suitable for different human arm sizes, which comprises: the device comprises an interface, a flexible circuit board, electrodes, electrode leads and hydrogel patches; wherein:

the electrodes are arranged on the strip-shaped flexible circuit board and are arranged in a row to form an electrode array; the size and the mutual interval of the two can be adjusted according to the actual demand condition;

the interface is positioned at one end of the strip-shaped flexible circuit board,

the electrode lead is used for leading out signals collected by the electrode;

the hydrogel patch is used for being adhered to an electric stimulation target electrode of the flexible electrode array, and one side, to which the hydrogel patch is adhered, is adhered to the skin of an arm in a surrounding mode.

Furthermore, the interface is connected with a peripheral and can be connected with different electrophysiological workstations through a patch cord; for example, when connected with a signal acquisition workstation, surface electromyographic signal acquisition may be performed, and when connected with an electrical stimulator, hand function rehabilitation training may be performed.

Further, the length of the flexible circuit board is 10-40 cm, and the width range is 0.5-4 cm.

Furthermore, a rectangular groove is dug in the flexible circuit board and used for reducing the structural rigidity of the electrode array.

Further, for convenience of description, the electrodes in the electrode array are numbered sequentially from 1, starting from the interface end of the strip-shaped flexible circuit board, for example, the number of the electrodes in the electrode array is 1, 2, …, 16 sequentially if there are 16 electrodes in the electrode array. And defines: the interface end of the multi-channel electrode array is a head end, and the other end of the multi-channel electrode array is a tail end.

Based on the current relatively common electrophysiological workstation, at most 128 electrode points can be subjected to information interaction simultaneously, and the range of the sizes of arms of a human is combined, the range of the diameters of the electrodes can be 1-38 mm, the range of the mutual intervals is 2-20 mm, the range of the distances between the electrodes and the long edge of the flexible circuit board is 2.5-20 mm, the range of the distances between the electrodes at the head end and the flexible circuit board is 10-50 mm, and the range of the distances between the electrodes at the tail end and the flexible circuit board is 2-40 mm.

The electrode lead wire is arranged at the same side of the electrode array at a distance of 0.01-1 mm, and the distance between the lead wire of the outermost electrode of the electrode array and the near-end long edge of the flexible circuit board is 0.05-5 mm.

In the electrode lead, the electrode lead with the larger serial number is closer to the outer side, and the design can meet the requirement that when the length of the flexible electrode array exceeds the actual use requirement, the redundant part can be cut off from the tail end, and the performance of the electrode array is not influenced.

The hydrogel patch is attached to the skin of an arm in a surrounding manner, and the attachment included angle between the hydrogel patch and the axis of the arm ranges from 0 degree to 90 degrees.

The invention has the beneficial effects that:

1. the invention can adapt to the arm sizes of different patients;

2. the invention adopts the design of the strip array, can realize the individual quick wearing, and reduce the preparation time before the electrode array is used;

3. the invention adopts a strip array design, and can be adapted to different electrophysiological workstations;

4. the invention has high safety and is beneficial to the rehabilitation of patients.

Drawings

The invention will be further described with reference to the accompanying drawings.

Figure 1 is a diagrammatic representation of a non-invasive multi-channel electrode array for accommodating different human arm sizes.

Reference numbers in the figures: 1 is an interface, 2 is a flexible circuit board, 3 is an electrode, 4 is a lead wire, and 5 is a hydrogel patch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "head end", "tail end", "long side", "short side", "around", "length", and the like, indicate an orientation or positional relationship, merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

A non-invasive multichannel electrode array for accommodating different human arm sizes, the electrode array comprising: interface 1, flexible circuit board 2, electrode 3, lead 4, aquogel 5. The interface 1 can be connected with different electrophysiological workstations through a patch cord, can acquire surface electromyographic signals when being connected with a signal acquisition workstation, and can perform hand function rehabilitation training when being connected with an electrical stimulator. The size and the mutual interval of the electrode electrodes 3 can be modified according to actual demand conditions, the electrode electrodes can be simultaneously subjected to information interaction with 128 electrode points at most based on the current relatively common electrophysiological workstation, in combination with the size range of arms of a human, the specified electrode diameter range is 1-38 mm, the mutual interval range is 2-20 mm, the distance range from the long edge of the flexible electrode array is 2.5-20 mm, the distance range from the head end electrode to the flexible circuit board 2 is 10-50 mm, the distance range from the tail end electrode to the flexible circuit board 2 is 2-40 mm, the lead distance on the same side is 0.01-1 mm, and the distance range from the outermost side lead to the near end long edge of the flexible circuit board 2 is 0.05-5 mm. The electrode lead with the large serial number is closer to the outer side, and the design can meet the requirement that when the length of the flexible electrode array exceeds the actual use requirement, the redundant part can be cut off from the tail end, and the performance of the electrode array is not influenced. The hydrogel patch 5 is adhered to the electric stimulation target electrode of the flexible electrode array, and one side, to which the hydrogel patch 5 is adhered, is adhered to the skin of an arm in a surrounding manner, wherein the range of an included angle between the hydrogel patch 5 and the arm is 0-90 degrees.

Example 1

The gel patch is attached to an electric stimulation target electrode of 8 flexible electrode arrays, the 8 flexible electrode arrays are arranged around a forearm to enable the gel patch 5 to be fully contacted with the skin, the flexible electrode arrays are connected end to end through magic tapes to enable the flexible electrode arrays to be tightly attached to the skin, the two hydrogel patch electrodes are used as the ground and the reference to be attached to biceps brachii, the flexible electrode arrays are connected with an electromyographic signal collector through a patch cord, and the collector is controlled by upper computer software to collect surface electromyographic signals.

Example 2

The gel patch 5 is attached to an electric stimulation target electrode of 8 flexible electrode arrays, the 8 flexible electrode arrays are arranged around a forearm in a surrounding mode, the gel patch 5 is made to be in full contact with the skin, the flexible electrode arrays are connected end to end through magic tapes, the flexible electrode arrays are made to be tightly attached to the skin, the two hydrogel patch 5 electrodes are used as the ground and the reference to be attached to biceps brachii, the flexible electrode arrays are connected with an electric stimulator through patch lines, and the electrophysiological signal workstation is controlled through software of an upper computer to output electric stimulation signals to conduct hand function rehabilitation training.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.