阅读说明：本技术 神经电刺激装置 (Nerve electrical stimulation device ) 是由 侯景明 颜如冰 陈翰 彭彦孟 于 2020-12-16 设计创作，主要内容包括：本发明提供一种神经电刺激装置,包括前侧连接头、电极导线、后侧连接头、延伸导线和限位结构；电极导线的后端伸置在前侧连接头内,电极导线的前端设有弹性接触片；后侧连接头的前端与前侧连接头的后端可拆卸相连,且后侧连接头插置在前侧连接头的内腔；延伸导线的前端伸置在后侧连接头内；延伸导线的前端设有移动接触片,移动接触片能够沿后侧连接头的轴向移动,直至与弹性接触片相触碰；限位结构设置在后侧连接头的内侧壁,限位结构具有弹性紧固部,通过该弹性紧固部对移动接触片进行定位。本发明通过限位结果将延伸导线固定住,使延伸导线和电极导线的相连更加地稳定,以能对人体的神经实现稳定的电刺激。(The invention provides a nerve electrical stimulation device which comprises a front side connector, an electrode lead, a rear side connector, an extension lead and a limiting structure, wherein the front side connector is connected with the electrode lead; the rear end of the electrode lead extends into the front side connector, and the front end of the electrode lead is provided with an elastic contact piece; the front end of the rear connector is detachably connected with the rear end of the front connector, and the rear connector is inserted into an inner cavity of the front connector; the front end of the extension lead extends into the rear connector; the front end of the extension lead is provided with a movable contact piece which can move along the axial direction of the rear connector until the movable contact piece touches the elastic contact piece; limit structure sets up the inside wall at the rear side connector, and limit structure has elasticity fastening portion, fixes a position the removal contact piece through this elasticity fastening portion. The invention fixes the extension lead by the limit result, so that the connection between the extension lead and the electrode lead is more stable, and the stable electrical stimulation can be realized on the nerve of the human body.)

1. An electrical nerve stimulation device, comprising:

the front side connector is of an axially hollow cylindrical structure;

the rear end of the electrode lead extends into the front side connector, and an electrode at the front end of the electrode lead is used for electrically stimulating nerves; the front end of the electrode lead is provided with an elastic contact piece;

the front end of the rear connector is detachably connected with the rear end of the front connector, and the rear connector is inserted into an inner cavity of the front connector;

the front end of the extension lead extends into the rear connector, and the rear end of the extension lead is used for connecting the pulse generator; the front end of the extension lead is provided with a movable contact piece, and the movable contact piece can move along the axial direction of the rear connector until the movable contact piece touches the elastic contact piece;

limit structure, limit structure sets up the inside wall at the rear side connector, limit structure has an elasticity fastening portion, works as remove the contact piece and move forward, can fix a position through this elasticity fastening portion.

2. The electrical nerve stimulation apparatus as claimed in claim 1, wherein the elastic contact piece has a gate-shaped structure, and is pressed against the elastic contact piece when the movable contact piece moves forward, thereby causing the elastic contact piece to be compressed and deformed;

the front side of the elastic contact piece is connected with a heating structure, and the elastic contact piece can be heated and expanded through the heating structure.

3. The electrical nerve stimulation device as claimed in claim 2, wherein the elastic fastening part has an L-shaped structure, and a lateral side thereof is connected to a positioning piece; the movable contact piece is of a structure with a small top and a big bottom.

4. The electrical nerve stimulation device as claimed in claim 3, wherein the spacer is in an L-shaped structure, the vertical section of the spacer is fixedly connected with the inner side wall of the rear connector, and the horizontal section of the spacer is connected with the horizontal piece of the elastic fastening part.

5. The electrical nerve stimulation device as claimed in claim 1, wherein the rear connector comprises a first clamping portion and a second clamping portion which are connected in an involutory manner, one end of the first clamping portion is rotatably connected with one end of the second clamping portion, and the other end of the first clamping portion and the other end of the second clamping portion are clamped and fixed through a clamping structure; and a clamping cavity is formed by enclosing the first clamping part and the second clamping part.

6. The electrical nerve stimulation device as claimed in claim 5, wherein the clamping structure comprises a locking groove formed in the end portion of the first clamping portion and a locking tongue formed in the end portion of the second clamping portion, wherein locking teeth are asymmetrically arranged on two opposite sides of the locking tongue, and limiting teeth which are matched with the locking teeth for clamping are arranged on the inner wall of the locking groove.

7. The electrical nerve stimulation device as claimed in claim 5, wherein a vibration isolating member is connected to each of inner walls of the holding cavities of the first holding portion and the second holding portion, and a holding hole for holding the extension lead is defined between the two vibration isolating members.

8. The electrical nerve stimulation device according to claim 7, wherein a limiting groove is formed on a surface of the vibration isolation member, which is connected with the first clamping portion or the second clamping portion, and a limiting boss which is installed in a manner of being matched with the limiting groove is formed on a corresponding position of the inner wall of the clamping cavity of the first clamping portion and the second clamping portion.

9. The electrical nerve stimulation device according to claim 7, wherein anti-falling grooves are respectively formed in both sides of one end portion of the vibration isolation member, which is connected to the first clamping portion or the second clamping portion, and anti-falling teeth which are engaged with the anti-falling grooves are formed in positions corresponding to the inner walls of the clamping cavities of the first clamping portion and the second clamping portion.

10. The electrical nerve stimulation device as claimed in any one of claims 1 to 9, wherein the front side connector and the rear side connector are both members made of silicone.

Technical Field

The invention relates to the technical field of medical equipment, in particular to a nerve electrical stimulation device.

Background

Electrical nerve stimulation is a commonly used means of treating neurological dysfunction and recovery from nerve injury. Generally, a nerve electrical stimulation apparatus includes a pulse generator, an extension lead and an electrode lead, which are implanted in a body, and a control device located outside the body. The extension wire is connected at one end to the pulse generator and at the other end to the electrode wire, so that the pulse generated by the pulse generator is transmitted to the electrode wire to electrically stimulate the nerve. Since the pulse generator, the extension lead and the electrode lead are implanted into the human body, it is necessary to ensure that the connection between the extension lead and the electrode lead is secure, avoiding unnecessary operations during use.

The method for fixing the electrode lead of the existing nerve electrical stimulation device generally comprises the steps of connecting the electrode lead with an extension lead, and then adding a sealing sleeve (a silica gel protective sleeve) at a connector for sealing and fixing. However, the sealing sleeve and the connector belong to two independent parts, so that the assembly condition between the sealing sleeve and the connector needs to be considered, and the sealing sleeve finally adopts the wire rope tightening treatment of two ends to achieve the purpose of sealing, and the sealing mode has low reliability and poor stability. In addition, when the extension wires are connected at the joints corresponding to the conductive rings of the electrode wires, the conductive rings need to be locked by screws to realize the electrical connection between the electrode wires and the extension wires, but the conductive rings are damaged by the method, which affects the electrical connection effect.

Therefore, how to provide a nerve electrical stimulation device with a simple structure and a good sealing effect becomes a technical problem to be solved by those skilled in the art.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a nerve electrical stimulation device, which comprises:

the front side connector is of an axially hollow cylindrical structure;

the rear end of the electrode lead extends into the front side connector, and an electrode at the front end of the electrode lead is used for electrically stimulating nerves; the front end of the electrode lead is provided with an elastic contact piece;

the front end of the rear connector is detachably connected with the rear end of the front connector, and the rear connector is inserted into an inner cavity of the front connector;

the front end of the extension lead extends into the rear connector, and the rear end of the extension lead is used for connecting the pulse generator; the front end of the extension lead is provided with a movable contact piece, and the movable contact piece can move along the axial direction of the rear connector until the movable contact piece touches the elastic contact piece;

limit structure, limit structure sets up the inside wall at the rear side connector, limit structure has an elasticity fastening portion, works as remove the contact piece and move forward, can fix a position through this elasticity fastening portion.

In the present application, the front side connector and the rear side connector are first connected together, and then the extension lead is extended from the rear end of the rear side connector until the movable contact piece at the front end of the extension lead contacts the elastic contact piece at the rear end of the electrode lead, thereby connecting the extension lead and the electrode lead; in addition, the extension lead is fixed through a limiting result, so that the connection between the extension lead and the electrode lead is more stable, and stable electrical stimulation can be realized on the nerves of a human body.

Preferably, the elastic contact piece is of a door-shaped structure, and can be pressed on the elastic contact piece when the movable contact piece moves forwards, so that the elastic contact piece is compressed and deformed;

the front side of the elastic contact piece is connected with a heating structure, and the elastic contact piece can be heated and expanded through the heating structure.

Thus, the elastic contact piece can push the movable contact piece backwards after expansion, so that the movement releasing piece can overcome the resistance of the elastic fastening part and reset, thereby separating the movable contact piece from the elastic contact piece.

Preferably, the elastic fastening part is of an L-shaped structure, and the transverse edge of the elastic fastening part is connected with a positioning sheet; the movable contact piece is of a structure with a small top and a big bottom.

Thus, when the moving contact piece moves forward, the front portion of the moving contact piece presses the vertical edge of the elastic fastening portion to move the vertical edge outward, and when the front portion of the moving contact piece moves forward of the vertical edge of the elastic fastening portion, the vertical edge returns inward and comes into contact with the rear portion of the moving contact piece.

Preferably, the locating piece is L-shaped, the vertical section of the locating piece is fixedly connected with the inner side wall of the rear connector, and the transverse section of the locating piece is connected with the transverse piece of the elastic fastening part.

In this way, the elastic fastening portion is provided with a constricted gap.

Preferably, the rear connector comprises a first clamping part and a second clamping part which are connected in an involutory manner, one end of the first clamping part is rotatably connected with one end of the second clamping part, and the other end of the first clamping part is clamped and fixed with the other end of the second clamping part through a clamping structure; and a clamping cavity is formed by enclosing the first clamping part and the second clamping part.

In the technical scheme, when the clamping structure is used, the clamping structure is loosened to separate one end of the first clamping part from one end of the second clamping part, so that the extension lead is placed between the first clamping part and the second clamping part, and then the clamping structure is clamped and fixed to fix the extension lead; this application has adopted the design that the centre gripping extended wire, has got rid of traditional technique, and the outside seal cover of connector compares in will extending wire and electrode wire and connect the back, still will tighten the cotton rope at seal cover both ends, and this method reliability is better, and the structure is also more succinct simultaneously, and work load and manufacturing that have significantly reduced are long, the cost is reduced simultaneously.

Preferably, the joint structure is including locating the locked groove of first clamping part tip with locate the spring bolt of second clamping part tip, the relative both sides of spring bolt are equipped with asymmetric locking tooth, be equipped with on the inner wall of locked groove with the spacing tooth of locking tooth cooperation screens.

Like this, the cooperation structure of locking tooth and spacing tooth can be with first clamping part and second clamping part locking, can effectively prevent that locked groove and spring bolt from tripping in the shake, can restrict first clamping part simultaneously again and leap for the second clamping part.

Preferably, the first clamping portion and the second clamping portion have a clamping cavity, and the inner walls of the clamping cavities are respectively connected with a vibration isolation member, and a clamping hole for clamping the extension wire is defined between the two vibration isolation members.

The applicant finds that the extension lead is easily affected by the outside, thereby affecting the connection stability of the extension lead and the electrode lead and causing instability of nerve electrical stimulation. In the application, the extension lead is arranged in the clamping hole and is firstly contacted with the two vibration isolation components, so that the vibration (shaking) of the extension lead is firstly absorbed by the vibration isolation components; and the two vibration isolation components press the extension lead tightly by buckling the first clamping part and the second clamping part, so that the axial movement of the extension lead is avoided.

Preferably, a limiting groove is formed in a surface of the vibration isolation member, which is connected with the first clamping portion or the second clamping portion, and a limiting boss which is installed in a matched manner with the limiting groove is arranged on a position, corresponding to the inner wall of the clamping cavity, of the first clamping portion and the second clamping portion.

Therefore, the installation and fixation of the vibration isolation component are realized together by the matching installation of the limiting groove and the limiting boss.

Preferably, the vibration isolation member is provided with a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion are provided with a clamping cavity, the clamping cavity is provided with a clamping groove, and the clamping groove is provided with a clamping groove.

Therefore, the anti-falling groove and the anti-falling tooth are matched, so that the extension lead can be limited to fall off from the clamping cavity due to vibration.

Preferably, the front connector and the rear connector are both members made of silicone.

Thus, the sealing property is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

Fig. 1 is a schematic axial sectional structural view of a nerve electrical stimulation apparatus provided by the present invention;

FIG. 2 is an enlarged schematic view of the connection between the position-limiting structure and the positioning plate in FIG. 1;

fig. 3 is a schematic structural view of the rear connector according to the present invention;

fig. 4 is a schematic structural view of the vibration isolation member according to the present invention.

Reference numerals:

1-front side connector;

2-electrode lead, 20-elastic contact piece;

3-rear connector, 31-first clamping part, 32-second clamping part, 34-anti-disengaging tooth, 35-vibration isolation rib;

4-extension wire, 40-moving contact piece;

5-a limiting structure, 50-an elastic fastening part;

6-positioning plate;

7-clamping structure, 71-locking groove, 72-bolt, 73-locking tooth and 74-limiting tooth;

8-vibration isolation component, 81-limit groove and 82-anti-drop groove.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Example (b): as shown in fig. 1, a nerve electrical stimulation device comprises a front side connector 1, an electrode lead 2, a rear side connector 3, an extension lead 4 and a limiting structure 5.

As shown in fig. 1, the front connector 1 has an axially hollow cylindrical structure. The rear end of the electrode lead 2 extends into the front side connector 1, and the electrode at the front end of the electrode lead 2 is used for electrically stimulating nerves. The front end of the electrode lead 2 is provided with an elastic contact piece 20.

As shown in fig. 1, the rear connector 3 is an axial hollow tubular structure, the front end of the rear connector 3 is detachably connected with the rear end of the front connector, and the rear connector 3 is inserted into the inner cavity of the front connector 1.

As shown in fig. 1, the front end of the extension wire 4 extends into the rear connector 3, and the rear end of the extension wire 4 is used for connecting a pulse generator (not shown). The front end of the extension lead 4 is provided with a movable contact piece 40, and the movable contact piece 40 can move along the axial direction of the rear connector 3 until contacting with the elastic contact piece 20.

As shown in fig. 1 and 2, the position-limiting structure 5 is disposed on the inner sidewall of the rear connector 3, and the position-limiting structure 5 has an elastic fastening portion 50, and when the moving contact piece 40 moves forward, the position can be determined by the elastic fastening portion 50.

In the present application, the front side connector and the rear side connector are first connected together, and then the extension lead is extended from the rear end of the rear side connector until the movable contact piece at the front end of the extension lead contacts the elastic contact piece at the rear end of the electrode lead, thereby connecting the extension lead and the electrode lead; in addition, the extension lead is fixed through a limiting result, so that the connection between the extension lead and the electrode lead is more stable, and stable electrical stimulation can be realized on the nerves of a human body.

In practice, the elastic contact piece 20 and the moving contact piece 40 are both made of conductive material.

As shown in fig. 1, the elastic contact piece 20 has a gate-shaped structure, and when the moving contact piece 40 moves forward, the elastic contact piece 20 can be pressed against the elastic contact piece 20, and the elastic contact piece 20 is compressed and deformed. The front side of the resilient contact strip 20 is connected to a heating structure (not shown) by which the resilient contact strip 20 is heated and expanded.

Thus, the elastic contact piece can push the movable contact piece backwards after expansion, so that the movement releasing piece can overcome the resistance of the elastic fastening part and reset, thereby separating the movable contact piece from the elastic contact piece.

As shown in fig. 1 and 2, the elastic fastening portion 50 is an L-shaped structure, and a lateral side thereof is connected to a positioning piece 6; the movable contact piece 40 has a structure with a small top and a large bottom.

Thus, when the moving contact piece moves forward, the front portion of the moving contact piece presses the vertical edge of the elastic fastening portion to move the vertical edge outward, and when the front portion of the moving contact piece moves forward of the vertical edge of the elastic fastening portion, the vertical edge returns inward and comes into contact with the rear portion of the moving contact piece.

As shown in fig. 1 and 2, the positioning plate 6 is of an L-shaped structure, a vertical section of the positioning plate 6 is fixedly connected with an inner side wall of the rear connector 3, and a horizontal section of the positioning plate 6 is connected with a horizontal plate of the elastic fastening portion 50.

In this way, the elastic fastening portion is provided with a constricted gap.

As shown in fig. 3, the rear connector 3 includes a first clamping portion 31 and a second clamping portion 32 connected to each other in an involutory manner, one end of the first clamping portion 31 is rotatably connected to one end of the second clamping portion 32, and the other end of the first clamping portion 31 and the other end of the second clamping portion 32 are clamped and fixed by a clamping structure 7; a clamping cavity is formed between the first clamping part 31 and the second clamping part 32.

In the technical scheme, when the clamping structure is used, the clamping structure is loosened to separate one end of the first clamping part from one end of the second clamping part, so that the extension lead is placed between the first clamping part and the second clamping part, and then the clamping structure is clamped and fixed to fix the extension lead; this application has adopted the design that the centre gripping extended wire, has got rid of traditional technique, and the outside seal cover of connector compares in will extending wire and electrode wire and connect the back, still will tighten the cotton rope at seal cover both ends, and this method reliability is better, and the structure is also more succinct simultaneously, and work load and manufacturing that have significantly reduced are long, the cost is reduced simultaneously.

Wherein, as shown in fig. 3, the clamping structure 7 includes a lock groove 71 formed at the end of the first clamping portion 31 and a lock tongue 72 formed at the end of the second clamping portion 32, two opposite sides of the lock tongue 72 are provided with asymmetrically arranged lock teeth 73, and the inner wall of the lock groove 71 is provided with limit teeth 74 which are engaged with the lock teeth 73.

Like this, the cooperation structure of locking tooth and spacing tooth can be with first clamping part and second clamping part locking, can effectively prevent that locked groove and spring bolt from tripping in the shake, can restrict first clamping part simultaneously again and leap for the second clamping part.

As shown in fig. 3 and 4, the inner walls of the clamping cavities of the first clamping portion 31 and the second clamping portion 32 are respectively connected with one vibration isolation member 8, and a clamping hole for clamping the extension conductor 4 is defined between the two vibration isolation members 8.

The applicant finds that the extension lead is easily affected by the outside, thereby affecting the connection stability of the extension lead and the electrode lead and causing instability of nerve electrical stimulation. In the application, the extension lead is arranged in the clamping hole and is firstly contacted with the two vibration isolation components, so that the vibration (shaking) of the extension lead is firstly absorbed by the vibration isolation components; and the two vibration isolation components press the extension lead tightly by buckling the first clamping part and the second clamping part, so that the axial movement of the extension lead is avoided.

As shown in fig. 3 and 4, a limiting groove 81 is formed on a surface of the vibration isolation member 8 connecting the first clamping portion 31 or the second clamping portion 32, and a limiting boss (not shown) fitted in the limiting groove 81 is provided on a corresponding position of the inner wall of the clamping cavity of the first clamping portion 31 and the second clamping portion 32.

Therefore, the installation and fixation of the vibration isolation component are realized together by the matching installation of the limiting groove and the limiting boss.

As shown in fig. 3 and 4, anti-falling grooves 82 are respectively disposed on two sides of one end of the vibration isolation member 8 connected to the first clamping portion 31 or the second clamping portion 32, and anti-falling teeth 34 that are engaged with the anti-falling grooves 82 are disposed on corresponding positions of the inner walls of the clamping cavities of the first clamping portion 31 and the second clamping portion 32.

Therefore, the anti-falling groove and the anti-falling tooth are matched, so that the extension lead can be limited to fall off from the clamping cavity due to vibration.

As shown in fig. 3 and 4, the vibration isolation ridges 35 are uniformly distributed along the circumferential direction of the holding hole on the inner wall surface of the holding hole.

Therefore, the contact area of the extension wires and the vibration isolation component is effectively reduced by the vibration isolation convex edges, the vibration transmission is reduced, and different vibration attenuation effects can be realized by adjusting the number, the height and the width of the vibration isolation convex edges and the matching relation of the assembled extension wires.

As shown in fig. 3 and 4, the front connector 1 and the rear connector 3 are both members made of silicone. Thus, the sealing property is good.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.