CN107335134B

CN107335134B - Implanted nerve stimulation electrode

Info

Publication number: CN107335134B
Application number: CN201710675638.9A
Authority: CN
Inventors: 许扶
Original assignee: Beijing Pins Medical Co Ltd
Current assignee: Beijing Pins Medical Co Ltd
Priority date: 2017-08-09
Filing date: 2017-08-09
Publication date: 2021-03-16
Anticipated expiration: 2037-08-09
Also published as: CN107335134A

Abstract

The invention discloses an implantable nerve stimulation electrode. The implantable neural stimulation electrode comprises a stimulation end, at least one extension section connected with the stimulation end, and plug ends connected with the extension sections in a one-to-one correspondence mode. The stimulation tip includes a base. And a reinforcing structure is arranged in the base body. The reinforcing structure may enhance the strength of the matrix. The reinforcing structure can prevent the base body from deforming to damage the lead in the base body in the process that the base body enters human tissues, and the use reliability of the implanted nerve stimulation electrode is improved.

Description

Implanted nerve stimulation electrode

Technical Field

The invention relates to a medical appliance, in particular to an implantable nerve stimulation electrode.

Background

In the process of implanting human tissues, in order to facilitate the stimulation end to smoothly reach a treatment part, a flat substrate is usually made of silicon rubber, but the silicon rubber is easy to deform, and the metal connecting wire inside the substrate is easy to break after the substrate deforms, so that a fault is caused.

Disclosure of Invention

Therefore, it is necessary to provide an implantable neural electrode with a reinforced structure stimulation end, which has good flexibility and good deformation resistance so that the metal connection wire is not easily broken, in order to solve the problem that the substrate is easily deformed in the process of implanting the traditional implantable neural electrode into human tissues.

An implantable neural stimulation electrode comprises a stimulation end, at least one extension section connected with the stimulation end, and plug ends connected with the extension sections in a one-to-one correspondence mode, wherein the stimulation end comprises a base body, and a reinforcing structure is arranged in the base body.

In one embodiment, the base body is a flat plate structure, and the reinforcing structure is a reinforcing mesh arranged in the base body and used for supporting the base body.

In one embodiment, the reinforcing mesh is made of a fiber fabric.

In one embodiment, the stimulation end comprises at least one stimulation part which is partially embedded in the base body and is arranged at a distance from the reinforcing net.

In one embodiment, the base body is provided with a guide groove for receiving a lead wire connected to the stimulation portion.

In one embodiment, the edge of the stimulation portion exposed out of the base portion is in a circular arc structure.

In one embodiment, the extension section comprises a protective sleeve connected to the stimulation end and a protective tube, and the protective sleeve is sleeved on the outer side of the protective tube.

In one embodiment, the plug end is provided with connectors at intervals, the protective tube is provided with a lead, and the connectors transmit signals to the stimulation end through the lead.

In one embodiment, the extension is provided with an identification mark.

In one embodiment, the edge of the substrate is in a circular arc structure.

The invention provides an implantable neural stimulation electrode which comprises a stimulation end, at least one extension section connected with the stimulation end, and plug ends connected with the extension sections in a one-to-one correspondence mode. The stimulation end comprises a base body, and a reinforcing structure is arranged in the base body. The reinforcing structure may enhance the strength of the matrix. The reinforcing structure can prevent the matrix from deforming to damage the wires in the matrix in the process that the matrix enters human tissues. The reinforcing structure thus improves the reliability of use of the implantable neurostimulation electrode.

Drawings

FIG. 1 is a block diagram of an implantable neurostimulation electrode;

FIG. 2 is a block diagram of a stimulation end of an implantable neurostimulation electrode;

FIG. 3 is a cross-sectional view of a stimulation end of an implantable neurostimulation electrode;

fig. 4 is a schematic diagram of an implantable neurostimulation electrode having different numbers of extensions.

Reference numerals

Implantable neurostimulation electrode 10, stimulation end 100, stimulation portion 110, base body 120, reinforcing structure 130, reinforcing mesh 140, guide groove 141, extension 200, protective sheath 220, protective tube 230, identification mark 210, plug end 300, connecting piece 310, wire 400.

Detailed Description

Referring to fig. 1-2, an implantable neurostimulation electrode 10 is provided. The implantable neurostimulation electrode 10 comprises a stimulation end 100, at least one extension segment 200 connected with the stimulation end 100, and plug ends 300 connected with the extension segments 200 in a one-to-one correspondence manner. The stimulating tip 100 includes a base 120. A reinforcing structure 130 is disposed within the base 120.

The stimulation tip 100 is used to stimulate a human body part. The extension segment 200 serves to increase the length between the stimulation end 100 and the plug end 300. The length of the extension segment 200 may be adjusted as desired. The plug terminal 300 is used for connection with a socket of a pulse generator. The plug end 300 may transmit a stimulation signal from a pulse generator to the extension segment 200. The extension segment 200 transmits the stimulation signal to the stimulation end 100 again to perform stimulation treatment on the human body part. The extension segment 200 may be made of a flexible material. A wire 400 for transmitting signals may be provided inside the extension segment 200. The extension segments 200 may be disposed in one-to-one correspondence with the plug ends 300. One of the extension segment 200 and the plug end 300 may be a signal transmission assembly. Each signal transmission element sends out different stimulation signals to the stimulation end 100, and the stimulation signals can be sent out to different positions of the stimulation end 100. The stimulating tip 100 may include a base 120 portion, and the base 120 may be made of a silicone rubber material. The substrate 120 may be formed by injection or molding. The reinforcing structure 130 provided in the base 120 may be an integral frame structure to maintain the shape of the base 120. The reinforcing structure 130 may also be a plurality of different skeletal elements. A plurality of skeleton parts can be arranged at different positions in the base 120 according to different shapes of the base 120, so as to enhance the strength of the base 120 and prevent the base 120 from deforming. The reinforcing structure 130 may also be a rod-shaped structure disposed inside the base 120 along the length of the base 120. The reinforcing structure 130 may be a tree-like branched structure arranged along the width and length directions of the matrix 120 and embedded in the matrix 120. The reinforcing structure 130 may also be a mesh structure uniformly disposed along the plane of the substrate 120. The reinforcing structure 130 may have a certain toughness so that the process of the stimulation end 100 entering the human tissue is more flexible and the human body is prevented from being injured.

The implantable neurostimulation electrode 10 comprises a stimulation end 100, at least one extension segment 200 connected with the stimulation end 100, and plug ends 300 connected with the extension segments 200 in a one-to-one correspondence manner. The stimulating tip 100 includes a base 120. A reinforcing structure 130 is disposed within the base 120. The reinforcing structure 130 may reinforce the strength of the substrate 120. The reinforcing structure 130 can prevent the base 120 from being deformed to damage the lead 400 inside the base 120 when the base 120 enters the human tissue, so as to improve the reliability of the implantable neurostimulation electrode 10, and at the same time, the stimulation end 100 has good compliance.

In one embodiment, the base 120 is a flat plate structure, and the reinforcing structure 130 is a reinforcing mesh 140 disposed within the base 120 for supporting the base 120. The reinforcing mesh 140 may have a greater mesh density to increase the strength of the reinforcing mesh 140. The mesh of the reinforcing mesh 140 may be circular, rectangular or diamond-shaped. The reinforcing mesh 140 is uniformly laid along the plane of the base 120 inside the base 120. The area of the reinforcing mesh 140 may be slightly smaller than the area of the plane of the matrix 120 to ensure that the reinforcing mesh 140 is covered by the matrix 120. Preferably, the profile of the reinforcing mesh 140 is similar to the profile of the substrate 120, and the profile of the reinforcing mesh 140 is smaller than the profile of the substrate 120. The profile of the reinforcing mesh 140 similar to the profile of the base 120 may minimize edge deformation of the base 120. The outer side of the base 120 may be coated with a rubber material. The flat plate structure can increase the area of the stimulation tip 100, so that the stimulation tip 100 can emit stimulation signals from different positions. The form of the flat plate structure is not limited, and the flat plate structure can be rectangular or circular. The shape of the flat plate structure can be adjusted according to physiological structures of different positions of a human body.

In one embodiment, the reinforcing mesh 140 is made of a fiber fabric. The fiber fabric has good elasticity and strength and also has good chemical stability. The reinforcing mesh 140 may be a mesh woven from fibers such as PET (polyester), PE (polyethylene), PA6 (polyamide 6), PA66 (polyamide 66) or PP (polypropylene). The thickness of the reinforcing mesh 140 is 0.1 to 0.6 mm.

In one embodiment, the stimulation tip 100 includes at least one stimulation portion 110. The stimulation portion 110 is partially embedded in the base 120 and spaced apart from the reinforcing mesh 140. The stimulation portion 110 may be a conductive material. The stimulation part 110 may have a rectangular or circular structure. The stimulation portion 110 may be embedded in the matrix 120 during injection or molding. The stimulation part 110 may have a sheet structure with both ends bent. The bent portion may be embedded in the base 120. The shape of the stimulation part 110 exposed outside the base 120 may be designed according to the human body structure to be stimulated, so as to achieve the best fit effect.

Referring to fig. 3, in one embodiment, the base 120 is provided with a guide groove 141. The guide groove 141 is used to accommodate a lead 400 connected to the stimulation part 110. The inner wall of the guide groove 141 may have a circular arc structure. The arc structure may prevent the wire 400 from being damaged due to friction. The guide groove 141 may be formed during the injection or molding of the substrate 120.

In one embodiment, the edge of the portion of the stimulation portion 110 exposed out of the base 120 has a circular arc structure. The arc structure can prevent the human tissue from being damaged in the process that the stimulation part 110 enters the human tissue. Reducing the friction when the stimulating tip 100 enters the body.

In one embodiment, the extension segment 200 comprises a protective sheath 220 connected to the stimulation tip 100 and a protective tube 230, wherein the protective sheath 220 is sleeved on the outer side of the protective tube 230. The protective sleeve 220 may be made of a silicone rubber material. The protective sheath 220 and protective tube 230 are configured to include an inner wire 400. The protection tube 230 may have a supporting function. The supporting function of the protection pipe 230 may provide the extension segment 200 with a certain strength to prevent the extension segment 200 from being damaged due to stress rupture.

In one embodiment, the plug end 300 is provided with connectors 310 at intervals. A lead 400 is disposed in the protective tube 230, and the connector 310 transmits a stimulation signal to the stimulation end 100 through the lead 400. The connector 310 may serve as a signal path for transmitting a signal to the wire 400. The socket of the pulse generator can be provided with a signal channel for transmitting pulse signals. The connector 310 may be connected to the signal path in the receptacle after being inserted into the receptacle of the pulse generator. The connection members 310 are spaced apart from each other to prevent the signal paths from being affected by the connection members 310 being conducted to each other.

In one embodiment, the extension segment 200 is provided with an identification marker 210. The identification mark 210 may be a medical X-ray traceable identification mark or an identification mark for distinguishing different extension segments 200. The identification mark 210 may be a pattern structure or may be formed by embedding a separate part into the extension segment 200.

In one embodiment, the edge of the substrate 120 has a circular arc structure. The arc structure can prevent the substrate 120 from damaging human tissues during the process of entering the human tissues. The circular arc structure can reduce the resistance of the substrate 120 to enter human tissue.

Referring to fig. 4, the number of the extension segment 200 and the plug terminal 300 corresponding to the extension segment 200 may be one or more. Each extension segment 200 may correspond to one or more stimulation portions 110 in the stimulation end 100. The plurality of extension pieces 200 may correspond to the different stimulation portions 110 of the stimulation end 100, respectively. The number and arrangement of the stimulation portions 110 of the stimulation end 100 can be changed according to actual needs. The number of extension segments 200 and plug ends 300 may be increased or decreased accordingly. In the embodiment of fig. 4, there are 16 stimulation portions 110 and 2 groups of the extension segment 200 and the plug end 300 corresponding to each other; and 8 stimulation portions 110 and 1 set of the extension segment 200 and the plug end 300 corresponding to each other. The number of the stimulation portions 110 may be 4-32, and the number of the corresponding extension segments 200 and plug ends 300 may be 1-4, as required.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An implantable neurostimulation electrode, which comprises a stimulation end (100), at least one extension (200) connected with the stimulation end (100), and plug ends (300) connected with the extension (200) in a one-to-one correspondence manner, wherein the stimulation end (100) comprises a base body (120), and is characterized in that a reinforcing mesh (140) for supporting the base body (120) is arranged in the base body (120), the base body (120) is of a flat plate structure, the reinforcing mesh (140) is uniformly laid in the base body (120) along the plane of the base body (120), the reinforcing mesh (140) has a contour similar to that of the base body (120), the contour of the reinforcing mesh (140) is smaller than that of the base body (120) so as to avoid edge deformation of the base body (120), the edge of the base body (120) is of a circular arc structure, and the stimulation end (100) comprises at least one stimulation part (110), the stimulation part (110) is a sheet structure with two bent ends, and the bent part of the sheet structure is embedded into the base body (120).

2. The implantable neurostimulation electrode according to claim 1, wherein the reinforcing mesh (140) is made of a fiber fabric.

3. The implantable neurostimulation electrode according to claim 1, wherein the stimulation portion (110) is spaced apart from the reinforcing mesh (140).

4. The implantable neurostimulation electrode according to claim 3, wherein the base body (120) is provided with a guide groove (141), the guide groove (141) being adapted for accommodating a lead wire (400) connected to the stimulation portion (110).

5. The implantable neurostimulation electrode according to claim 3, wherein the edge of the part of the stimulation part (110) exposed out of the base body (120) is in a circular arc structure.

6. The implantable neurostimulation electrode according to claim 1, wherein the extension section (200) comprises a protective sheath (220) connected with the stimulation tip (100) and a protective tube (230), the protective sheath (220) being sleeved outside the protective tube (230).

7. The implantable neurostimulation electrode according to claim 6, wherein the plug end (300) is provided with connectors (310) at intervals, a lead (400) is arranged in the protection tube (230), and the connectors (310) transmit signals to the stimulation end (100) through the lead (400).

8. The implantable neurostimulation electrode according to claim 1, wherein the extension segment (200) is provided with an identifying mark (210).