CN218529544U

CN218529544U - Dorsal root ganglion electrical stimulation electrode

Info

Publication number: CN218529544U
Application number: CN202220575944.1U
Authority: CN
Inventors: 杨菲; 朱宏伟; 杜涛; 倪兵; 李纤; 王培培; 刘殿新
Original assignee: Capital Medical University
Current assignee: Capital Medical University
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2023-02-28
Anticipated expiration: 2032-03-16

Abstract

The utility model relates to a dorsal root ganglion electrical stimulation electrode, which is characterized by comprising an electrode head part and an electrode tail part, wherein the electrode head part comprises an implantation part and an electrode plate; the electrode plates are arranged at intervals at one end of the implantation part, the implantation part is used for implanting the lower part of a transverse process of a rat model and fixing the transverse process of the rat model, peripheral muscles and skin tissues, and the electrode plates are used for electrically stimulating dorsal root ganglia at the corresponding position of the rat model; the other end of portion of implanting is fixed the setting the one end of electrode afterbody, the other end of electrode afterbody is used for wearing out rat model interaural connection outside electro photoluminescence ware, the utility model discloses can wide application in the neural regulation and control field of electro photoluminescence.

Description

Dorsal root ganglion electrical stimulation electrode

Technical Field

The utility model relates to an electrical stimulation nerve regulation and control field especially relates to a dorsal root ganglion electro photoluminescence electrode.

Background

In recent years, electrical stimulation of dorsal root ganglia is one of the new nerve regulation analgesic methods for clinical application, and in order to better improve the analgesic effect of electrical stimulation of dorsal root ganglia and clarify the analgesic mechanism thereof, simulation of clinical electrical stimulation treatment of dorsal root ganglia in a chronic pain animal model, particularly a rat model, is required, so that an electrical stimulation electrode suitable for application in the rat model is required.

However, the dorsal root nerve electrical stimulation electrode that can be applied in the rat model is lacking in the prior art devices.

Disclosure of Invention

In view of the above problems, it is an object of the present invention to provide a dorsal root ganglion electro-stimulation electrode suitable for use in a rat model.

In order to achieve the purpose, the utility model adopts the following technical proposal: a dorsal root ganglion electrical stimulation electrode comprising an electrode head and an electrode tail, wherein the electrode head comprises an implant and an electrode pad;

the electrode plates are arranged at intervals at one end of the implantation part, the implantation part is used for implanting the lower part of a transverse process of a rat model and fixing the transverse process of the rat model, peripheral muscles and skin tissues, and the electrode plates are used for electrically stimulating dorsal root ganglia at the corresponding position of the rat model;

the other end of the implantation part is fixedly provided with one end of the electrode tail part, and the other end of the electrode tail part is used for penetrating out of the rat model and connecting with an external electric stimulator.

Preferably, the electrode tail comprises a sleeve, a first ear-side part, a second ear-side part and a lead;

one end of the sleeve is connected with the implantation part, the other end of the sleeve is connected with one end of the first ear side part, and the sleeve is used for protecting the head part of the electrode from being broken off; the other end of the first ear side part is connected with one end of the second ear side part through the lead, the other end of the second ear side part penetrates out of a rat model and is connected with an external electric stimulator, and the first ear side part and the second ear side part are both used for assisting in fixing the electrode head and surrounding muscles or skin tissues.

Preferably, the sleeve is a cylindrical structure formed by fixedly arranging metal rings among a plurality of metal rings at intervals.

Preferably, the number of the metal rings is the same as the number of the electrode sheets.

Preferably, the number of the electrode sheets is 2.

Preferably, the interval between the two electrode plates is 0.5mm.

Preferably, each electrode plate is 0.5mm in length.

Preferably, hole-shaped structures used for being fixed with muscle sutures are arranged on the two sides of the top and the bottom of the ear side part.

Preferably, an electrode jacket is arranged outside the electrode plate, and the electrode jacket is made of polyimide and silica gel materials.

Preferably, the width of the implant part is 0.5mm, the total length of the electrode head part is 10mm, and the total length of the electrode tail part is 290mm.

The utility model discloses owing to take above technical scheme, it has following advantage:

1. the utility model discloses an it is low to bury the degree of difficulty, can carry out good fixed with rat model's transverse process of vertebra, muscle and skin, and position is difficult for changing after burying.

2. The utility model discloses the size is little and with low costs, can be applicable to well bury under the transverse process of rat model to carry out dorsal root ganglion electro photoluminescence animal experiment.

3. The utility model discloses a polyimide and silica gel material can guarantee as the electrode overcoat that the electrode pliability is good, difficult rupture, can be used to the embedment of several weeks to several months, are convenient for carry out the research of chronic painful treatment.

To sum up, the utility model discloses can the wide application in the neural regulation and control field of electro photoluminescence.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like reference numerals refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic view of an overall structure provided by an embodiment of the present invention;

fig. 2 is a schematic view of an electrode head structure according to an embodiment of the present invention;

fig. 3 is a schematic view of a structure of an ear side according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "upper", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

The utility model provides a dorsal root ganglion electricity stimulating electrode is provided with electrode head and electrode afterbody, and the outside electro stimulator of electrode connection, electrode head implant rat model's transverse process below and rat model's transverse process and muscle and skin tissue are fixed on every side to carry out the electricity stimulation to the dorsal root ganglion that rat model corresponds the position, the utility model discloses can with rat model's vertebra transverse process, muscle and skin fixed, the position is difficult for changing after burying.

As shown in fig. 1 and fig. 2, the dorsal root ganglion electrical stimulation electrode provided by the present invention comprises an electrode head portion 1 and an electrode tail portion 2, wherein the electrode head portion 1 comprises an implantation portion 11 and an electrode sheet 12.

A plurality of electrode plates 12 are arranged at intervals at one end of the implantation part 11, the implantation part 11 is used for implanting the lower part of the transverse process of the rat model and fixing the transverse process of the rat model and peripheral muscles and skin tissues, and the electrode plates 12 are used for electrically stimulating dorsal root ganglia at the corresponding position of the rat model. The other end of the implantation part 11 is fixedly provided with one end of an electrode tail part 2, and the other end of the electrode tail part 2 is used for penetrating out of the interaural space of the rat model and is connected with an external electric stimulator through an adapter 3.

In a preferred embodiment, as shown in figures 1, 2 and 3, the electrode tail 2 includes a cuff 21, a first earbank 22, a second earbank 23 and a lead 24. One end of the sleeve 21 is connected with the implantation part 11, the other end of the sleeve 21 is connected with one end of the first ear side part 22, and the sleeve 21 is used for protecting the electrode head part 1 from being broken off easily. The other end of first auricle portion 22 passes through wire 24 and connects the one end of second auricle portion 23, and the other end of second auricle portion 23 is worn out the rat model and is connected outside electro-stimulator between the ear, and first auricle portion 22 and second auricle portion 23 all are used for helping electrode head 1 to fix with muscle or skin tissue around.

In a preferred embodiment, the sleeve 21 is a cylindrical structure formed by a plurality of metal rings with metal ring spaces fixedly arranged between the metal rings.

Specifically, the number of metal rings is the same as the number of electrode pieces 12.

In a preferred embodiment, the second ear front 23 is 40mm in length.

In a preferred embodiment, the number of the electrode plates 12 is 2, the length of each electrode plate 12 is 0.5mm, and the interval between the two electrode plates 12 is 0.5mm.

In a preferred embodiment, the first and

second ear sides

22 and 23 are provided with hole patterns on both the top and bottom for securing with muscle sutures.

In a preferred embodiment, the width of the implant 11 is 0.5mm.

In a preferred embodiment, the overall length of the electrode head 1 is 10mm and the overall length of the electrode tail 2 is 290mm.

In a preferred embodiment, the electrode sheet 12 is provided with an electrode sheath on the outside, and the electrode sheath is made of polyimide and silica gel materials.

In a preferred embodiment, the electrode head 1 has a diameter of 8mm.

The following describes in detail the use of the electrical stimulation electrode for dorsal root ganglion of the present invention by means of specific examples:

first, the electrode head 1 is implanted under the rat model transverse process, fixed to the rat model transverse process and the surrounding muscle and skin tissue, and the implant 11 is implanted in the rat model transverse process through the first and second ear sides 22 and 23. Next, the electrode tail 2 was passed from the rat model subcutaneously to the rat head, and the cuff 21 was passed through the space between the two ears at the top of the rat model head and fixed by suturing. Finally, after the sleeve 21 is connected with the adapter, the sleeve is connected with an external electric stimulator, and the dorsal root ganglion of the rat model is electrically stimulated through the electrode plate 12.

Above-mentioned each embodiment only is used for explaining the utility model discloses, wherein structure, connected mode and the preparation technology etc. of each part all can change to some extent, all are in the utility model discloses equal transform and improvement of going on technical scheme's the basis all should not exclude outside the protection scope of the utility model.

Claims

1. The dorsal root ganglion electrical stimulation electrode is characterized by comprising an electrode head part and an electrode tail part, wherein the electrode head part comprises an implantation part and an electrode plate;

the other end of the implantation part is fixedly provided with one end of the electrode tail part, and the other end of the electrode tail part is used for penetrating out of the rat model and connecting an external electric stimulator.

2. The dorsal root ganglion electro-stimulation electrode of claim 1 wherein the electrode tail comprises a cuff, a first otic side, a second otic side and a lead;

3. The dorsal root ganglion electro-stimulation electrode of claim 2, wherein the cuff is a cylindrical structure formed by a plurality of metal rings with metal ring spaces fixedly arranged therebetween.

4. A dorsal root ganglion electro-stimulation electrode according to claim 3, wherein the number of said metal rings is the same as the number of said electrode pads.

5. A dorsal root ganglion electro-stimulation electrode according to claim 1, wherein the number of the electrode pads is 2.

6. A dorsal root ganglion electro-stimulation electrode according to claim 5, wherein the spacing between the electrode pads is 0.5mm.

7. A dorsal root ganglion electro-stimulation electrode according to claim 1, wherein each of said electrode pads has a length of 0.5mm.

8. The dorsal root ganglion electro-stimulation electrode of claim 2, wherein the top and bottom sides of the ear side are provided with hole patterns for fixation to muscle sutures.

9. The dorsal root ganglion electro-stimulation electrode of claim 1, wherein an electrode sheath is provided outside the electrode sheet, and the electrode sheath is made of polyimide and silica gel materials.

10. A dorsal root ganglion electro-stimulation electrode according to claim 1, wherein the width of the implanted part is 0.5mm, the overall length of the head part of the electrode is 10mm, and the overall length of the tail part of the electrode is 290mm.