CN216934449U

CN216934449U - Implanted nerve stimulation electrode

Info

Publication number: CN216934449U
Application number: CN202123166596.7U
Authority: CN
Inventors: 陈新蕾; 姚松林; 许英杰; 柳森
Original assignee: Hangzhou Nuowei Medical Technology Co ltd
Current assignee: Hangzhou Nuowei Medical Technology Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-07-12
Anticipated expiration: 2031-12-14

Abstract

An implantable neurostimulation electrode comprising: the lead is provided with a front end communicated with a power supply and a rear end communicated with the discharge module; the colloid sleeve is coated on the lead and comprises a hard colloid part close to the front end and a soft colloid part close to the rear end; and the metal ring surrounds between the hard rubber part and the soft rubber part, and two ends of the metal ring are respectively fixed with the hard rubber part and the soft rubber part. The implantable nerve stimulation electrode adopts the combination of soft colloid and hard colloid, so that the front end of the implantable nerve stimulation electrode is easier to plug and pull, and the operability is improved; utilize the becket to connect stereoplasm portion of gluing and soft portion of gluing, effectively link together both, greatly strengthen implanted nerve stimulation electrode and insert the required axial strength of plug in the power supply hole of inlaying on the skull in the correspondence to and arrange and the required anti-bending ability of crooked wiring at cerebral cortex and/or brain deep.

Description

Implanted nerve stimulation electrode

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of medical equipment, in particular to an implantable nerve stimulation electrode.

[ background of the utility model ]

The cranial nerve stimulation can effectively treat and control the dyskinesia diseases, has unique advantages of adjustability, reversibility and the like, can relieve, improve and even eliminate corresponding diseases, better improves the daily life function of patients and improves the life quality.

The drug therapy and surgical resection therapy are two basic treatment methods for abnormal discharge of the cerebral nervous system in clinic at present, but the curative effect is gradually reduced due to the plasticity of the nervous system loop and the development of primary diseases, and the curative effect of partial patients is obviously reduced or completely disappeared after years. The implanted nerve stimulator can inhibit abnormal discharge of brain neurons by electrode discharge, thereby achieving the therapeutic effect.

In the prior art, the implantable neurostimulation electrode usually includes a wire and a soft rubber insulation layer coated outside the wire, however, the end of the implantable neurostimulation electrode used for connecting the power supply is not easy to be plugged if it is made of a soft rubber layer, and is easy to deform and damage when bearing the plugging force.

[ Utility model ] content

The utility model aims to provide an implanted nerve stimulation electrode with deformation resistance and strong operability.

The purpose of the utility model is realized by the following technical scheme:

an implantable neurostimulation electrode comprising:

the lead is provided with a front end communicated with a power supply and a rear end communicated with the discharge module;

the colloid sleeve is coated on the lead and comprises a hard colloid part close to the front end and a soft colloid part close to the rear end;

the metal ring surrounds between the hard rubber part and the soft rubber part, and two ends of the metal ring are respectively fixed with the hard rubber part and the soft rubber part.

In one embodiment, the metal ring comprises a handheld area and calibration lines, the handheld area is arranged on the outer side surface of the metal ring, and the calibration lines are circumferentially distributed on the outer side surface of the metal ring in a surrounding manner.

In one embodiment, the calibration line is located in the center of the hand-held area.

In one embodiment, the length of the metal ring is 5.4mm to 5.6 mm.

In one embodiment, the metal ring is made of platinum or gold material.

In one embodiment, the hard glue portion is an epoxy resin or a polycarbonate material.

In one embodiment, the soft rubber is one of thermoplastic polyurethane elastomer rubber, liquid silicone rubber, polysiloxane, and polyethylene methacrylate.

In one embodiment, the method comprises the following steps:

the front part comprises a front contact, the hard rubber part, a part of covered wire and the metal ring, and the front contact is electrically connected with the wire and a power supply respectively;

the rear part comprises a rear contact, the soft rubber part and a part of covered wires, wherein the rear contact is formed by uniformly arranging a plurality of discharging modules at intervals and is electrically connected with the wires.

In one embodiment, the length of the front portion is no greater than 1/2 the length of the back portion.

In one embodiment, the metal ring is the same material as the front and back contacts.

Compared with the prior art, the utility model has the following beneficial effects: the implantable nerve stimulation electrode has a simple structure and ingenious design, and adopts the combination of soft and hard colloids, so that the front end of the implantable nerve stimulation electrode is easier to plug and pull, and the operability is improved; utilize the becket to connect stereoplasm portion of gluing and soft portion of gluing, effectively link together both, greatly strengthen implanted nerve stimulation electrode and insert the required axial strength of plug-in and pull-out in inserting the power (stimulator) hole of inlaying on the skull corresponding to and arrange and the required anti-bending ability of crooked wiring in cerebral cortex and/or brain deep.

[ description of the drawings ]

FIG. 1 is a schematic diagram of an implantable neurostimulation electrode of the present invention;

fig. 2 is a partial schematic diagram of the structure of the implanted nerve stimulation electrode of the utility model.

[ detailed description ] embodiments

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the utility model of the present application, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

Referring to fig. 1-2, an implantable neurostimulation electrode comprises: a lead 1, a gum cover and a metal ring 4. The lead 1 is wound to form an electrode as a main functional module and is made of a material with excellent electrical properties. The end part of the electrode is provided with a discharge module which is used for directly applying electrical stimulation to the brain so as to inhibit abnormal discharge of brain neurons. The implanted nerve stimulation electrode is in a long rod shape, the lead 1 is provided with a front end communicated with an external power supply of the implanted nerve stimulation electrode and a rear end communicated with the discharge module, and the front end and the rear end are end parts at two ends of the implanted nerve stimulation electrode in the axial direction. The colloid sleeve is an insulating protective layer of the lead 1 and is coated on the lead 1. The colloid sleeve comprises a hard colloid part 2 close to the front end of the lead 1 and a soft colloid part 3 close to the rear end of the lead 1 respectively so as to improve the operability of the implanted nerve stimulation electrode. Specifically, the hard rubber part 2 at the front end of the lead 1 is a bending-resistant and deformation-resistant hard rubber, is not easy to bend when being inserted into a power supply (stimulator) embedded on the skull, and is not easy to deform and damage due to external force pulling when being pulled out from the power supply (stimulator); the soft rubber part 3 at the rear end of the lead 1 is soft rubber with flexibility, and is soft, tensile and bending resistant when the cerebral cortex and/or the deep part of the brain are arranged and the wiring is bent. The metal ring 4 is a connecting portion between the hard rubber portion 2 and the soft rubber portion 3, and surrounds between the hard rubber portion 2 and the soft rubber portion 3. Specifically, the metal ring 4 is located between the hard rubber portion 2 and the soft rubber portion 3, two ends of the metal ring are respectively fixed to the end portions of the hard rubber portion 2 and the soft rubber portion 3, and the inner surface of the metal ring 4 is covered and fixed by the hard rubber portion 2 and/or the soft rubber portion 3. The metal ring 4 is used for connecting the hard rubber part 2 and the soft rubber part 3, the hard rubber part and the soft rubber part are effectively connected together, the axial strength (as much as 8 times) required by inserting and pulling the implanted nerve stimulating electrode into a power supply (stimulator) hole correspondingly inserted and embedded on the skull is greatly enhanced, and the bending resistance (180-degree bending deformation-free damage) required by arranging and bending wiring in the deep part of the cerebral cortex and/or the brain is also greatly enhanced.

When the doctor inserts the implanted nerve stimulation electrode, the doctor holds the metal ring 4 to insert the implanted nerve stimulation electrode into an external power supply. In one embodiment, the ferrule 4 includes a hand-held area 5 for hand-holding and a calibration wire 6 for alignment with a power source. The handheld area 5 is arranged on the outer side surface of the metal ring 4, and the metal ring 4 is pinched from outside to inside instead of the colloid sleeve, so that the inner lead 1 cannot be extruded. The calibration line 6 is circumferentially distributed on the outer side surface of the metal ring 4 in a surrounding manner, and the calibration line 6 is convenient to align with a scale mark on the power supply, so that the power supply is perfectly butted with the implanted nerve stimulation electrode. Preferably, the calibration line 6 is located at the center of the handheld area 5, and the calibration line 6 can be arranged perpendicular to the axis of the implantable neurostimulation electrode.

In one embodiment, the length of the metal ring 4 is 5.4mm to 5.6 mm. Specifically, the length of the metal ring 4 may be 5.4mm, 5.5mm, 5.6mm, or the like, and preferably, the length of the metal ring 4 is 5.5 mm.

In one embodiment, the metal ring 4 is made of a long-term implant type material, such as platinum or gold material.

In one embodiment, the hard glue portion 2 is made of epoxy resin or polycarbonate material, preferably, epoxy glue.

In one embodiment, the soft rubber is one of thermoplastic polyurethane elastomer rubber, liquid silicone rubber, polysiloxane and polymethyl methacrylate urethane material, preferably, long-term implanted silicone rubber.

In one embodiment, the implantable neurostimulation electrode can be further divided into an anterior portion and a posterior portion. The front part comprises a front contact, the hard rubber part 2, a part of the covered wire 1 and a metal ring 4, and the front contact is electrically connected with the wire 1 and a power supply respectively. The rear portion comprises a rear contact, the soft rubber portion 3 and a covered portion of the lead 1, the rear contact is formed by uniformly arranging a plurality of discharging modules at intervals and is electrically connected with the lead 1, and the discharging modules have different arrangement gaps according to different diseases.

In one embodiment, the electrode is wound by selecting a conducting wire 1 with the diameter of 0.1mm, and the diameter of the conducting wire 1 is greatly reduced, so that the electrode is thinner and smaller as a whole. The lead 1 is thinner, the strength of the electrode is relatively reduced, and forces in various directions are concentrated on the electrode in the operation process, so that the electrode is deformed and loses efficacy and other adverse effects. In order to make the electrode small and thin and the strength of the front end not to be damaged, a metal ring 4 is added on the front part and is connected with the colloid with two hardness.

In one embodiment, the length of the front portion is no greater than 1/2 the length of the back portion. The length direction is the axial direction of the implantable neural stimulation electrode.

In one embodiment, the metal ring 4 is made of the same material as the front contact and the rear contact.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the utility model. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. An implantable neurostimulation electrode, comprising:

2. The implantable neurostimulation electrode according to claim 1, wherein the metal ring comprises a holding area and calibration lines, the holding area is arranged on the outer side surface of the metal ring, and the calibration lines are circumferentially distributed around the outer side surface of the metal ring.

3. The implantable neurostimulation electrode according to claim 2, wherein the calibration line is located at the center of the hand-held area.

4. The implantable neurostimulation electrode according to claim 1, wherein the metal ring has a length of 5.4mm-5.6 mm.

5. The implantable neurostimulation electrode according to claim 1, wherein the metal ring is made of platinum or gold material.

6. The implantable neurostimulation electrode according to claim 1, wherein the hard glue portion is an epoxy or polycarbonate material.

7. The implantable neurostimulation electrode according to claim 1, wherein the soft gel is one of a thermoplastic polyurethane elastomer rubber, a liquid silicone, a polysiloxane and a polymethyl methacrylate urethane material.

8. The implantable neurostimulation electrode according to claim 1, comprising:

9. The implantable neurostimulation electrode according to claim 8, wherein the length of the anterior portion is no greater than 1/2 of the length of the posterior portion.

10. The implantable neurostimulation electrode of claim 8, wherein the metal ring and the front and back contacts are all the same material.