CN219001757U

CN219001757U - Nerve stimulating electrode

Info

Publication number: CN219001757U
Application number: CN202223271894.7U
Authority: CN
Inventors: 陈风顺; 王栋潇; 王守东
Original assignee: Hangzhou Shenluo Medical Technology Co ltd
Current assignee: Hangzhou Shenluo Medical Technology Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-05-12
Anticipated expiration: 2032-12-06

Abstract

The utility model relates to a nerve stimulating electrode, which comprises a stimulating unit, an overhanging piece and an anti-drop piece, wherein the overhanging piece is connected with the inner end of the stimulating unit; the anti-falling part comprises a connecting part and an anti-falling part, the connecting part is connected with the overhanging part, one end of the anti-falling part is connected with the connecting part, and the other end of the anti-falling part can move relative to the overhanging part and forms a barb; the drop-off preventing portion does not protrude from the stimulation unit in a direction perpendicular to a center line of the stimulation unit when the nerve stimulation electrode is implanted in the body, and the barb protrudes from the stimulation unit in a direction perpendicular to the center line of the stimulation unit after the nerve stimulation electrode is implanted in the body. The utility model has the advantages that: when the nerve stimulating electrode is implanted in a human body, the anti-drop part does not protrude from the stimulating unit in the direction perpendicular to the central line of the stimulating unit, so that the size of the nerve stimulating electrode after being arranged in the puncture needle is reduced, the nerve stimulating electrode can be implanted in the human body by using the puncture needle with a smaller aperture, and the human body wound caused by implantation is reduced.

Description

Nerve stimulating electrode

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a nerve stimulating electrode.

Background

The nerve stimulating electrode is a medical device for treating nerve diseases, and is required to be used in a state of being implanted into the inside of a human body. In order to fix the end of the nerve stimulating electrode implanted in the human body, the inner end of the nerve stimulating electrode needs to be provided with a nerve stimulating electrode anti-drop structure.

At present, the size of the neural stimulation electrode anti-drop structure on the market is larger, and in order to implant the neural stimulation electrode into a human body, a puncture needle with a larger aperture is required to be selected for puncture, so that the outer diameter of the puncture needle matched with the current neural stimulation electrode is larger, the human body wound caused by implantation is enlarged, the healing of the human body wound is slow, and scars are easy to leave.

Disclosure of Invention

In view of the above, the present utility model provides a nerve stimulating electrode that is reduced in size after being incorporated into a puncture needle.

In order to solve the problems, the utility model provides the following technical scheme:

the nerve stimulating electrode comprises a stimulating unit, an overhanging piece and an anti-falling piece, wherein the overhanging piece is connected with the inner end of the stimulating unit; the anti-falling part comprises a connecting part and an anti-falling part, the connecting part is connected with the overhanging part, one end of the anti-falling part is connected with the connecting part, and the other end of the anti-falling part is movable relative to the overhanging part and forms a barb; the drop-off preventing portion does not protrude from the stimulation unit in a direction perpendicular to a center line of the stimulation unit when the nerve stimulation electrode is implanted in the body, and the barb protrudes from the stimulation unit in a direction perpendicular to the center line of the stimulation unit after the nerve stimulation electrode is implanted in the body.

In one embodiment, the number of the anti-falling parts is a plurality.

By the arrangement, the plurality of anti-falling parts share the reaction force from human tissues, the reaction force of the human tissues borne by the single anti-falling part is reduced, and the risk of breakage failure of the single anti-falling part is reduced.

In one embodiment, a plurality of separation grooves are arranged between one ends of the anti-falling parts, which are relatively close to the connecting parts, and the anti-falling parts are circumferentially distributed by taking the central line of the stimulation unit as the center and are mutually separated through the separation grooves.

The anti-drop parts are separated through the clearance grooves, and are prevented from being mutually extruded or stacked together, so that the anti-drop parts are prevented from protruding out of the stimulation unit in the direction perpendicular to the central line of the stimulation unit when the nerve stimulation electrode is implanted into the body; the reaction force of human tissues born by the anti-falling piece can be more uniform, and the service life of the anti-falling piece is prolonged.

In one embodiment, the overhang is a hollow tubular structure.

By the arrangement, the strength of the outer extending piece can be enhanced, and the weight of the outer extending piece can be reduced.

In one embodiment, the connection is interference connected to the overhang.

The connecting part and the overhanging piece are firmly connected, and are not easy to separate and disintegrate under the reaction force of human tissues.

In one embodiment, the connecting portion is sleeved on the outer protrusion.

So set up, be convenient for link together connecting portion and overhanging piece.

In one embodiment, the connecting portion is integrally formed with the anti-drop portion; and/or the shape of the anti-falling part close to one side of the outer extending part is matched with the outer peripheral surface of the outer extending part.

So set up, joint strength between connecting portion and the anticreep portion is higher, is difficult to separate and damages. When the nerve stimulating electrode is implanted in the body, interference between the overhanging part and the anti-drop part is avoided, so that the anti-drop part is prevented from protruding out of the stimulating unit in the direction perpendicular to the central line of the stimulating unit.

In one embodiment, the nerve stimulating electrode further comprises a front electrode connected to the connection and electrically connected to the stimulating unit.

By the arrangement, after the optimal treatment position is found through the puncture needle, the front electrode can be sent to the optimal treatment position and fixed at the optimal treatment position through the anti-falling piece, so that accurate positioning between the nerve stimulating electrode and the optimal treatment position is realized.

In one embodiment, the front electrode is connected to the connecting part in an interference manner; and/or the front electrode is of a sleeve-shaped structure, and the front electrode is sleeved on the connecting part.

So set up, interference connection can guarantee firm in connection between front end electrode and the connecting portion, is difficult to break away from the disintegration. The front electrode is of a sleeve-shaped structure, and is convenient to connect with the connecting part.

In one embodiment, the front electrode is electrically connected to the overhang, and the overhang is electrically connected to the stimulation unit.

The overhanging piece plays a role in structural connection and electrical connection at the same time, and is beneficial to simplifying the structure of the nerve stimulating electrode.

Compared with the prior art, when the nerve stimulating electrode is implanted in a human body, the anti-falling part does not protrude from the stimulating unit in the direction perpendicular to the central line of the stimulating unit, so that the size of the nerve stimulating electrode is reduced after the nerve stimulating electrode is arranged in the puncture needle, the nerve stimulating electrode can be implanted in the human body by selecting the puncture needle with a smaller aperture, the human body wound caused by implantation is reduced, and the postoperative recovery of a patient is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a neural stimulation electrode according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of the connection of the anti-drop member, the extension member, and the front electrode of the nerve stimulating electrode of FIG. 1;

FIG. 3 is a schematic view of a structure of an anti-drop member according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of the anti-release member shown in fig. 3 in another view.

Reference numerals:

1. an overhang; 2. an anti-falling member; 21. a connection part; 211. a connection hole; 212. a boss; 22. an anti-falling part; 23. a spacing groove; 3. a front electrode; 4. and a stimulation unit.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used in the description of the present application for purposes of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first feature with the second feature, or an indirect contact of the first feature with the second feature via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and/or" as used in the specification of this application includes any and all combinations of one or more of the associated listed items.

The application provides a nerve stimulating electrode, which is an in vivo implanted medical device. In use, the nerve stimulating electrode is usually implanted into a human body by means of a puncture needle, and the nerve stimulating electrode implanted into the human body is fixed by means of an anti-drop structure provided at one end of the nerve stimulating electrode implanted into the human body. The specific method comprises the following steps: the method comprises the steps of firstly puncturing a human body by using a puncture needle with a hollow channel, puncturing the puncture needle to the vicinity of target tissue, then delivering the nerve stimulating electrode to a to-be-stimulated part along the hollow part of the puncture needle, then withdrawing the puncture needle, leaving the nerve stimulating electrode in the human body, and fixing the nerve stimulating electrode implanted in the human body by using an anti-drop structure.

The anti-drop structure adopted by the existing nerve stimulation electrode comprises a barb, the barb has large size and abrupt appearance, the movement resistance in the puncture needle is large, and the barb is difficult to push into the body along the puncture needle.

Referring to fig. 1, the nerve stimulating electrode provided in the present application includes a stimulating unit 4, an extending member 1 and an anti-falling member 2, where the stimulating unit 4 is in a cylindrical shape, and includes a catheter and an electrical stimulation ring or an electrical stimulation sheet fixed on the catheter, and the electrical stimulation ring or the electrical stimulation sheet is electrically connected to the pulse generator through a guide wire, and the guide wire for connecting the pulse generator and the electrical stimulation ring/electrical stimulation sheet can be inserted into the catheter.

The end of the stimulation unit 4 implanted in the human body is an inner end of the human body, and a part of the stimulation unit 4 is left outside the human body, the part of the stimulation unit 4 is used for connecting with the pulse generator and receiving the electric signal of the pulse generator to be transmitted to the stimulation unit 4 positioned in the human body, and the stimulation unit 4 implanted in the human body including the inner end of the human body applies electric stimulation to the target tissue, so that the treatment effect is exerted.

The overhanging piece 1 is connected with the body inner end of the stimulation unit 4 and extends outwards along the central line of the stimulation unit 4 in the length direction; the anti-falling part 2 comprises a connecting part 21 and an anti-falling part 22, the connecting part 21 is connected to the outer extending part 1, the anti-falling part 22 can move relative to the connecting part 21 in a deformation mode, one end of the anti-falling part 22 is connected with the connecting part 21, and the other end of the anti-falling part 22 can move relative to the outer extending part 1 and form barbs.

During the implantation of the nerve stimulating electrode, the anti-falling portion 22 does not protrude from the stimulating unit 4 in a direction perpendicular to the center line of the stimulating unit 4 due to the force restraining effect of the inner wall of the hollow passage of the puncture needle on the anti-falling portion 22. Therefore, when the nerve stimulating electrode provided by the utility model is used, a puncture needle with smaller aperture can be matched, the width of the hollow channel of the puncture needle is reduced, and the puncture needle with smaller outer wall width can be matched as long as the stimulating unit 4 can be allowed to pass through.

After the nerve stimulating electrode is implanted in the body, as the puncture needle is withdrawn from the body, the anti-falling part 22 loses the force restraining effect of the inner wall of the hollow passage of the puncture needle, so that the anti-falling part 22 moves relatively away from the overhanging piece 1 to drive the barb to protrude out of the stimulating unit 4 in the direction perpendicular to the central line of the stimulating unit 4, thus being capable of propping against the body tissue and fixing the nerve stimulating electrode on the target tissue.

In some embodiments, the end of the anti-release portion 22 that is relatively far from the connection portion 21 extends obliquely in a direction approaching the stimulation unit 4, so that an angle is formed between the anti-release portion 22 and the protruding member 1, the angle opening facing the stimulation unit 4. The arrangement can improve the connection reliability between the barb and the human tissue, and the force of the human tissue acting on the barb can inhibit the anti-falling part 22 from folding towards the outer extension piece 1, thereby preventing the anti-falling piece 2 from separating from the human body.

In some embodiments, the drop-out prevention portion 22 may be an elastomer. In the process of penetrating the anti-falling part 2 into the puncture needle, the anti-falling part 22 is folded towards the outer extending part 1 under the action of the force of the inner wall of the puncture needle, and after the puncture needle is withdrawn from a human body, the anti-falling part 22 is elastically deformed and reset to be relatively far away from the outer extending part 1 for unfolding.

Preferably, in some embodiments, the anti-falling portion 22 may be plastic, and the anti-falling portion 22 made of plastic has strong deformability, good toughness and insulation.

Preferably, referring to fig. 1-4, to reduce the risk of breakage failure of a single anti-drop 22, the number of anti-drop 22 may be multiple. This allows the plurality of drop-out preventing portions 22 to share the reaction force from the human tissue, and reduces the reaction force of the human tissue received by the single drop-out preventing portion 22, thereby reducing the risk of breakage of the drop-out preventing portion 22.

Further, referring to fig. 3, a plurality of anti-falling parts 22 are provided between one ends of the anti-falling parts 22 relatively close to the connecting part 21, the plurality of anti-falling parts 22 are circumferentially distributed around the center line of the stimulation unit 4 as a center, and are spaced from each other by the spacing grooves 23. This can increase the gap width between the adjacent drop-off preventing portions 22, and prevent the multiple drop-off preventing portions 22 from being pressed against each other or stacked together after being gathered, thereby preventing the drop-off preventing portions 22 from protruding from the stimulation unit 4 in a direction perpendicular to the center line of the stimulation unit 4 when the nerve stimulation electrode is implanted in the body. Meanwhile, the plurality of anti-falling parts 22 are distributed around the center line of the stimulation unit 4, so that the reaction force of human tissues received by the anti-falling part 2 is relatively uniform, and the service life of the anti-falling part 2 is prolonged.

Further, referring to fig. 3 again, the bottoms of the interval grooves 23 are smooth curved surfaces, which can avoid stress concentration in the groove portions, thereby improving the durability of the anti-falling member 2 and prolonging the service life of the anti-falling member 2.

Further, in some embodiments, the connection portion 21 and the anti-falling portion 22 are integrally formed, which can improve the connection strength between the connection portion 21 and the anti-falling portion 22, and ensure that the connection portion 21 and the anti-falling portion 22 are not easily separated and damaged.

In some embodiments, in order to make the connection between the connection portion 21 and the extension member 1 firm, the possibility that the connection portion 21 and the extension member 1 are separated and disassembled due to the reaction force of human tissue is reduced, and the connection portion 21 is connected to the extension member 1 in an interference manner.

Preferably, referring to fig. 2, in order to facilitate the interference connection of the connection portion 21 to the extension member 1, the connection portion 21 is sleeved on the extension member 1.

Further, referring to fig. 4, in order to facilitate the connection portion 21 to be sleeved on the outer extension member 1, a connection hole 211 is formed on a side of the connection portion 21 facing the outer extension member 1, and the outer extension member 1 extends into the connection hole 211 and is in interference connection with the connection portion 21.

In some embodiments, in order to avoid interference between the outer protrusion 1 and the anti-falling portion 22, the anti-falling portion 22 protrudes from the stimulation unit 4 in a direction perpendicular to a central line of the stimulation unit 4, a shape of a side of the anti-falling portion 22 near the outer protrusion 1 is adapted to an outer circumferential surface of the outer protrusion 1, and after the nerve stimulating electrode is installed in the hollow portion of the puncture needle, a shape of a side of the anti-falling portion 22 near the outer protrusion 1 may be adapted to the outer circumferential surface of the outer protrusion 1. Preferably, the outer circumferential surface of the outer protrusion 1 is an outer cylindrical surface, and the side of the drop-preventing portion 22 near the outer protrusion 1 is an inner cylindrical surface.

Referring to fig. 1 and 2, the nerve stimulating electrode further includes a front electrode 3, and the front electrode 3 is connected to the connection portion 21 and electrically connected to the stimulating unit 4. After the puncture needle finds the target tissue, the tip electrode 3 can be delivered to the target tissue, and the relative position of the tip electrode 3 and the target tissue can be fixed by the drop-off preventing portion 22. The function of the front electrode 3 is equivalent to an electric stimulation ring or an electric stimulation sheet on the stimulation unit 4, and also has a therapeutic function, and can be electrically connected with the pulse generator and receive the electric signals thereof, thereby carrying out accurate electric stimulation on target tissues.

In some embodiments, to prevent the front electrode 3 from being separated from the connection part 21 to cause a medical accident, the front electrode 3 is connected to the connection part 21 in an interference manner, so that the connection between the front electrode 3 and the connection part 21 is ensured to be firm.

Referring to fig. 2, in some embodiments, to facilitate the interference connection of the front electrode 3 to the connection portion 21, the front electrode 3 has a sleeve-shaped structure, and the front electrode 3 is sleeved on the connection portion 21.

Referring to fig. 2 and 3, in some embodiments, a boss 212 is protruding from an end of the connection portion 21 away from the nerve stimulating electrode, and the front electrode 3 is sleeved on the boss 212, and an end of the connection portion 21 forms a step with a peripheral wall of the boss 212 to stop an end of the front electrode 3, so as to limit a depth of the front electrode 3 sleeved on the boss 212.

In some embodiments, the front electrode 3 is electrically connected to the extension 1, and the extension 1 is electrically connected to the stimulation unit 4. In this way, the overhanging element 1 plays a role in both structural connection and electrical connection, which is beneficial to simplifying the structure of the nerve stimulating electrode.

Preferably, in some embodiments, the front electrode 3 is welded to the end of the outer member 1 away from the stimulation unit 4, the side of the outer member 1 near the stimulation unit 4 is coated with UV glue, and one or more wires in the stimulation unit 4 extend into the UV glue and are electrically connected with the front electrode 3 or the outer member 1, so that the reliability of the electrical connection between the wires and the front electrode 3 or the outer member 1 can be improved, and the UV glue can be sufficiently solidified by irradiating ultraviolet rays to the UV glue.

In some embodiments, to enhance the strength of the extension 1, the extension 1 is a hollow tubular structure, which also reduces the weight of the extension 1.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims

1. A nerve stimulating electrode, comprising:

a stimulation unit (4);

an outer extension (1) connected to the inner body end of the stimulation unit (4);

the anti-falling component (2), the anti-falling component (2) comprises a connecting part (21) and an anti-falling part (22), the connecting part (21) is connected to the outer extending component (1), one end of the anti-falling part (22) is connected with the connecting part (21), and the other end of the anti-falling part is movable relative to the outer extending component (1) and forms a barb;

the drop-off prevention part (22) does not protrude from the stimulation unit (4) in a direction perpendicular to a center line of the stimulation unit (4) when the nerve stimulation electrode is implanted in the body, and the barb protrudes from the stimulation unit (4) in a direction perpendicular to the center line of the stimulation unit (4) after the nerve stimulation electrode is implanted in the body.

2. The nerve stimulating electrode according to claim 1, wherein the number of the drop-off preventing portions (22) is plural.

3. The nerve stimulating electrode according to claim 2, wherein a plurality of the drop-off preventing portions (22) are provided with spacing grooves (23) between one ends of the drop-off preventing portions (22) relatively close to the connecting portion (21), and the drop-off preventing portions (22) are circumferentially distributed centering on a center line of the stimulating unit (4) and are spaced apart from each other by the spacing grooves (23).

4. The nerve stimulating electrode according to claim 1, characterized in that the overhanging element (1) is a hollow tubular structure.

5. The nerve stimulation electrode according to claim 1, characterized in that the connection (21) is interference connected to the extension (1).

6. The nerve stimulating electrode according to claim 5, wherein the connecting portion (21) is sleeved on the outer protrusion (1).

7. The nerve stimulation electrode according to claim 1, characterized in that the connection portion (21) is integrally formed with the anti-drop portion (22); and/or the shape of the anti-falling part (22) close to one side of the outer extending part (1) is matched with the outer peripheral surface of the outer extending part (1).

8. The nerve stimulation electrode according to claim 1, characterized in that the nerve stimulation electrode further comprises a front electrode (3), the front electrode (3) being connected to the connection (21) and electrically connected to the stimulation unit (4).

9. The nerve stimulation electrode according to claim 8, characterized in that said front end electrode (3) is interference connected to said connection portion (21); and/or, the front electrode (3) is of a sleeve-shaped structure, and the front electrode (3) is sleeved on the connecting part (21).

10. The nerve stimulation electrode according to claim 8, characterized in that the front electrode (3) is electrically connected to the extension (1), the extension (1) being electrically connected to the stimulation unit (4).