CN217548048U - Intracranial electrode module and intracranial electrode implantation device - Google Patents

Abstract

The embodiment of the application relates to the technical field of medical equipment, and particularly discloses an intracranial electrode module and an intracranial electrode implantation device, wherein the intracranial electrode module comprises a substrate, at least two electrode sampling point groups and conductive wires, the electrode sampling point groups are arranged on the substrate and exposed on the surface of the substrate, and the electrode sampling point groups comprise electrode sampling points; the conductive wire is arranged on the substrate and is electrically connected with the electrode sampling point; the intracranial electrode module comprises a sampling part, an electrode sampling point is positioned in the sampling part, and the sampling part can be switched between a gathering state and an unfolding state; in an unfolding state, the sampling part is unfolded to be in a fan shape, the sampling part is provided with a first side and a second side which are oppositely arranged along the radial direction of the sampling part, and all the electrode sampling point groups are arranged at intervals along the unfolding circumferential direction of the sampling part; in the gathered state, the second side gathers. Through the mode, the human body can be implanted in the gathering state and then switched to the unfolding state, so that the human body can be implanted through a bone window smaller than the intracranial electrode module.

Description

Intracranial electrode module and intracranial electrode implantation device

Technical Field

The embodiment of the application relates to the technical field of medical equipment, in particular to an intracranial electrode module and an intracranial electrode implantation device.

Background

Under normal conditions, the surface of the cortex of the human brain can generate weak bioelectric signals and has certain regularity. When pathological changes occur to the brain, the discharge mode of the brain electrical signals of the brain changes obviously, and certain pathological changes can cause the discharge mode of the brain electrical signals to change specially.

At present, two methods are used for acquiring electroencephalogram signals, one method is the acquisition of scalp electroencephalogram signals, namely, a certain number of electrodes are arranged on a scalp to acquire the electroencephalogram signals, and the method has the characteristics of no wound and simple and convenient operation. However, since the scalp is far from the cerebral cortex, has many intervening tissues, has severe signal attenuation, and has large artifacts, it is used for general examination of electroencephalogram. If medical personnel need to accurately locate the focus, another complicated intracranial electroencephalogram signal acquisition mode, namely an intracranial cortical electrode, is needed. The method firstly needs a surgeon to carry out craniotomy, then the intracranial cortical electrode is buried under the upper cerebral cortex and the subdural brain, and the electroencephalogram signal is collected through the electrode of the intracranial cortical electrode and an electrode lead.

Intracranial cortex electrode mainly divide into strip cortex electrode and slice cortex electrode, adopt slice cortex electrode more when taking bigger detection range for can, however, the inventor of this application discovers at the in-process of implementing this application: at present, when the traditional sheet cortex electrode is used, a bone window which is larger than the sheet cortex electrode needs to be arranged on the skull of a patient, and the traditional sheet cortex electrode is not beneficial to the repair and postoperative care of the patient.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application embodiment mainly solved provides an intracranial electrode module and intracranial electrode implantation device, can implant the human body through the bone window that is less than intracranial electrode module.

In order to solve the technical problem, the application adopts a technical scheme that: the intracranial electrode module is applied to implantation in a human body and is characterized by comprising a substrate, electrode sampling point groups and conductive wires, wherein the electrode sampling point groups are at least two groups, are arranged on the substrate and are exposed on the surface of the substrate, and comprise electrode sampling points; the conductive wire is arranged on the substrate and is electrically connected with the electrode sampling point; the intracranial electrode module comprises a sampling part, wherein an electrode sampling point is positioned in the sampling part, and the sampling part can be switched between a gathering state and an unfolding state; in the unfolded state, the sampling part is unfolded in a fan shape, the sampling part is provided with a first side and a second side which are oppositely arranged along the radial direction of the sampling part, the sampling part is unfolded to the state that the second side is wider than the first side, and all the electrode sampling point groups are arranged at intervals along the unfolded circumferential direction of the sampling part; in the gathered state, the second side gathers.

Optionally, each set of electrode sampling points comprises at least two electrode sampling points; in the unfolding state, all the electrode sampling points in the same electrode sampling point group are distributed at intervals along the radial direction of the sampling part.

Optionally, each conductive filament corresponds to one electrode sampling point group; the conductive wire is connected with each electrode sampling point in the same electrode sampling point group.

Optionally, each conductive filament corresponds to one electrode sampling point.

Optionally, the substrate comprises: the two memory metal wires are arranged oppositely; and a substrate extending from one of the memory wires to the other memory wire; the two memory metal wires are used for driving the base material to open so as to enable the sampling part to be switched from the gathering state to the unfolding state.

Optionally, the memory wire comprises nitinol.

Optionally, the substrate is a polymer film; the material of the substrate comprises at least one of polytetrafluoroethylene, polyethylene terephthalate and polyethylene material.

Optionally, the conductive filaments comprise metal filaments and an insulating coating; the metal wire is connected with the electrode sampling point, and the insulating coating is coated on the surface of the metal wire.

According to another aspect of the embodiment of the application, an intracranial electrode implantation device is provided, which comprises a catheter, the intracranial electrode module and a push rod, wherein the catheter is provided with a guide hole with at least one end penetrating through the catheter; the intracranial electrode module is at least partially accommodated in the guide hole; the push rod is at least partially accommodated in the guide hole and used for pushing the intracranial electrode module to move relative to the catheter so as to switch the sampling part between the gathering state and the unfolding state; in the gathering state, the sampling part gathers in the guide hole; in the unfolded state, the sampling part extends out of the guide hole and is unfolded into a fan shape.

Optionally, the push rod has a first end located in the guide hole and a second end located outside the guide hole; the intracranial electrode module further comprises a base part and a conductive part, the base part and the conductive part are contained in the guide hole, one end of the base part is connected with the first side, the other end, away from the first side, of the base part is connected with the conductive part, and the conductive part is connected with the conductive wire and arranged at the first end.

Optionally, the end of the conduit from which the sampling part extends is bendable.

The beneficial effects of the embodiment of the application are that: be different from prior art's condition, the electrode sampling point of the intracranial electrode module of this application embodiment is located sampling portion, and sampling portion can switch between gathering together the state and expanding state, and sampling portion can implant the human body under gathering together the state, switches into the expanding state again to the realization is implanted the human body through the bone window less than intracranial electrode module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

Fig. 1 is a schematic perspective view of an intracranial electrode implantation apparatus according to an embodiment of the present application, fully housing an intracranial electrode module;

fig. 2 is a schematic perspective view of a partially exposed intracranial electrode module of an intracranial electrode implantation apparatus according to an embodiment of the application;

FIG. 3 is a fragmentary view of an angled, schematic structural view of a bunched state of an intracranial electrode module according to an embodiment of the present application;

FIG. 4 is a fragmentary view of an angled configuration schematic of an intracranial electrode module according to an embodiment of the present application;

FIG. 5 is a broken view of a cut-away schematic view of a conductive filament of an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an angle of a sampling part in an unfolded state according to another embodiment of the present application;

FIG. 7 is a first schematic cross-sectional view of an implant device according to an embodiment of the present application;

FIG. 8 is a broken-away view of a schematic structural view of a catheter of an embodiment of the present application in a straightened state;

FIG. 9 is a broken-away view of a schematic structural view of a catheter in accordance with an embodiment of the present application in a bent state;

fig. 10 is a schematic perspective view of an intracranial electrode implantation apparatus according to an embodiment of the present application, with the catheter in a bent state, partially exposing an intracranial electrode module;

FIG. 11 is a second cutaway schematic view of an implant device according to an embodiment of the present application;

FIG. 12 is an enlarged view of the portion A in FIG. 11

Fig. 13 is an enlarged view of a portion B in fig. 4.

Detailed Description

In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein 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 application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, fig. 1 is a schematic perspective view illustrating an intracranial electrode implantation apparatus according to an embodiment of the present application, in which an intracranial electrode module is completely housed, and fig. 2 is a schematic perspective view illustrating an intracranial electrode implantation apparatus according to an embodiment of the present application, in which a portion of the intracranial electrode module is exposed. The intracranial electrode implantation apparatus 1 includes an intracranial electrode module 100 and an implantation device 200, and the intracranial electrode implantation apparatus 1 is used for implanting the intracranial electrode module 100 into a human body. The intracranial electrode module 100 is used for detecting an intracranial electrical signal, and the intracranial electrode module 100 is at least partially accommodated in the implant device 200. The user of the implantation device 200 pushes the intracranial electrode module 100 out into the body.

Next, a detailed description will be given of a specific structure of the intracranial electrode module 100.

Referring to fig. 3 and 4, fig. 3 and 4 show a broken view of a two-angle structural schematic diagram of a gathered state of the intracranial electrode module according to the embodiment of the present application, in combination with fig. 2. The intracranial electrode module 100 includes a substrate 110, at least two electrode sampling point groups 120 and a conductive wire 130, wherein the electrode sampling point groups 120 are at least two groups, the electrode sampling point groups 120 are disposed on the substrate 110 and exposed on the surface of the substrate 110, and the electrode sampling point groups 120 include electrode sampling points 121. The conductive wire 130 is disposed on the substrate 110 and electrically connected to the electrode sampling point 121. The intracranial electrode module 100 comprises a sampling part 140, the electrode sampling point 121 is located on the sampling part 140, and the sampling part 140 can be switched between a gathering state and an unfolding state. In the unfolded state, the sampling part 140 is unfolded in a fan shape, the sampling part 140 has a first side 141 and a second side 142 which are oppositely arranged along the radial direction of the sampling part 140, the sampling part 140 is unfolded until the second side 142 is wider than the first side 141, and the electrode sampling point groups 120 are arranged at intervals along the unfolded circumferential direction of the sampling part 140; in the gathered state, the second side 142 is gathered. In the present application, the fan shape is defined as a fan shape, a fan ring, and a fan shape and a fan ring with unequal radii.

Referring to fig. 4 and fig. 3, the base 110 includes two memory metal wires 111 and a base material 112, the two memory metal wires 111 are disposed opposite to each other, and the base material 112 extends from one memory metal wire 111 to the other memory metal wire 111. The two memory wires 111 are used for driving the base material 112 to open so as to switch the sampling portion 140 from the folded state to the unfolded state.

For the memory metal wire 111, the memory metal wire 111 is made of nickel-titanium alloy, the two memory metal wires 111 have the same length, and in the expanded state, the two memory metal wires 111 are arranged at an included angle of 111 degrees, a sector area formed by the two memory metal wires 111 as radius edges is a sampling part 140, and in the gathered state, the included angle between the two memory metal wires 111 is reduced and is arranged in a close fit manner. The two memory metal wires 111 are in an unfolded state in a natural state, and after the external force is received, the two memory metal wires 111 are folded oppositely to form a folded state, so that the base material 112 can be arranged in a stacked mode, and after the external force is removed from the memory metal wires 111 in the folded state, due to the characteristics of the memory metal, the two memory metal wires 111 are unfolded along the fan-shaped circumferential direction, so that the base material 112 is driven to be unfolded, and the sampling part 140 is switched from the folded state to the unfolded state. It should be noted that the length and the included angle of the two memory metal wires 111 are not limited in the present application, in other embodiments of the present application, the lengths of the two memory metal wires 111 may not be equal, and then the sampling portion 140 in this embodiment is a sector with two unequal radius sides, and in the embodiment of the present application, the two memory metal wires 111 are disposed at an included angle of 111 ° in order to obtain the sampling portion 140 with a larger area, so as to obtain a larger detection area, in other embodiments of the present application, in the expanded state, the included angle between the two memory metal wires 111 may be 30 °, 60 °, 120 °, and the like. It should be noted that, the present application does not limit the specific material of the two memory metal wires 111, and in other embodiments of the present application, the material of the two memory metal wires 111 may be other memory metals, which can drive the substrate 112 to expand.

The base material 112 has a fan-shaped film-like structure corresponding to the sampling unit 140, and the two memory wires 111 are located on two radial sides of the base material 112. The material of the substrate 112 is one or more of polytetrafluoroethylene, polyethylene terephthalate and polyethylene, and the substrate 112 is used for setting the electrode sampling points 121. In the present embodiment, the base material 112 is a fan-shaped film-like structure in order to reduce the thickness of the intracranial electrode module 100, but the present invention is not limited to the specific shape of the base material 112, and in other embodiments of the present invention, the base material 112 may be a sheet-like structure having a thickness, and the base material 112 may have a mesh-like structure such as a mesh-like structure in order to secure the strength of the base material 112, and the base material 112 may not be fitted to the sampling part 140, and the base material 112 may have a fan-ring shape or a fan-like shape with an irregular arc edge, and the electrode sampling point 121 may be provided. It should be noted that the present application does not limit the specific material of the substrate 112, and in other embodiments of the present application, the substrate 112 may be polyvinyl chloride, polypropylene, or other polymers.

Referring to fig. 4 and fig. 3, each set of electrode sampling points 120 includes 4 electrode sampling points 121, and in the expanded state, the 4 electrode sampling points 121 in the same electrode sampling point set 120 are distributed at intervals along the radial direction of the sampling portion 140. In the embodiment of the present application, the number of the electrode sampling point sets 120 is 9, and the 9 electrode sampling point sets 120 are distributed on the substrate 112 in a circumferential array. It should be noted that, the application does not limit the number of the electrode sampling point groups 120 and the number of the electrode sampling points 121 in each group of the electrode sampling point groups 120, in other embodiments of the application, the number of the electrode sampling point groups 120 may be 2, 3, or 10, etc., the plurality of electrode sampling point groups 120 are arranged on the substrate 112 in a circumferential array manner, the number of the electrode sampling points 121 in each group of the electrode sampling point groups 120 may be 2, 5, or 7, etc., the plurality of electrode sampling points 121 are distributed along the radial direction of the sampling portion 140 at intervals, so that the number of the electrode sampling point groups 120 and the number of the electrode sampling points 121 in each group of the electrode sampling point groups 120 are at least 2. It should be further noted that, the present application does not limit the arrangement manner of the electrode sampling points 121 in the electrode sampling point group 120, and in other embodiments of the present application, the electrode sampling points 121 in the electrode sampling point group 120 may be arranged at intervals in an S shape, so that the electrode sampling points 121 are dispersedly arranged along the radial direction of the sampling portion 140.

Referring to fig. 5, fig. 5 is a broken view of a cross-sectional view of the conductive wire 130 according to an embodiment of the present disclosure, and fig. 3 and 4 are combined. The conductive wire 130 includes a metal wire 131 and an insulating coating 132, the metal wire 131 is made of a stainless steel wire, a platinum-iridium alloy wire, a platinum wire, a cobalt-chromium alloy wire, a tantalum wire, and the like, and the insulating coating 132 is made of a parylene coating, a teflon coating, and the like. The metal wire 131 is connected with the electrode sampling point 121, and the insulating coating 132 is coated on the surface of the metal wire 131, so that the part of the metal wire 131 which is not connected with the electrode sampling point 121 cannot be in direct contact with the external environment, and therefore, after the intracranial electrode module 100 is implanted into a human body, the metal wire 131 cannot be in direct contact with the human body. Each conductive wire 130 corresponds to one electrode sampling point 121, each electrode sampling point 121 is arranged at one end of each conductive wire 130, 4 conductive wires 130 are correspondingly arranged in each group of electrode sampling points 120, and in each group of electrode sampling points 120, one ends of 2 adjacent metal wires 131 departing from the electrode sampling points 121 are arranged at intervals of an included angle of 3 degrees. In the embodiment of the present application, the conductive wires 130 and the electrode sampling points 121 are arranged in a one-to-one correspondence manner, and a doctor can accurately position a focus according to the electrode sampling points 121, so as to facilitate detection, but in other embodiments of the present application, each conductive wire 130 may be arranged corresponding to a plurality of electrode sampling points 121, please refer to fig. 6, fig. 6 shows a structural schematic diagram of an angle of the sampling portion in an unfolded state according to another embodiment of the present application, each conductive wire 130 corresponds to one electrode sampling point group 120, and each conductive wire 130 is connected to 4 electrode sampling points 121 in the same electrode sampling point group 120.

Next, a specific configuration of the implantation device 200 will be described in detail.

Referring to fig. 7 to 10 for the implant device 200, fig. 7 shows a first cut-away schematic view of the implant device of the embodiment of the present application, fig. 8 shows a broken view of a structural schematic view of a catheter of the embodiment of the present application in a straightened state, fig. 9 shows a broken view of a structural schematic view of a catheter of the embodiment of the present application in a bent state, and fig. 10 shows a perspective schematic view of an intracranial electrode implantation apparatus of the embodiment of the present application with a partial exposure of an intracranial electrode module when the catheter is in a bent state, in combination with fig. 1 and 2. The implant device 200 comprises a housing 210, a catheter 220 and a driving mechanism 230, wherein the catheter 220 is arranged on the housing 210, the catheter 220 is provided with a through guide hole 221 along the extending direction of the catheter 220, at least part of the intracranial electrode module 100 is accommodated in the guide hole 221, the catheter 220 comprises a first part 222 and a second part 223 which are sequentially connected, and the second part 223 is at least partially positioned outside the housing 210 and used for extending into a human body. The driving mechanism 230 is disposed on the housing 210, and the driving mechanism 230 is connected to the second portion 223 and is used to drive an end of the second portion 223 away from the first portion 222 to move away from or close to the first portion 222, so as to bend or straighten the second portion 223, so that the doctor can adjust the implantation angle of the intracranial electrode module 100. It should be noted that the implantation angle in this application is the angle formed between the tangent line of the end of the second portion 223 near the first portion 222 and the first portion 222.

Please refer to fig. 7 in conjunction with fig. 1 and 2 for the housing 210. The housing 210 is a cylindrical shell structure extending along a preset direction X, one end of the housing 210 is provided with a chamfer, the housing 210 is a mounting structure of the conduit 220 and the driving mechanism 230, the housing 210 plays a certain dustproof and protective role for the conduit 220 and the driving mechanism 230, and the cylindrical design of the housing 210 is convenient for a user to hold when in use. And the rib plate 211 is provided inside the outer shell 210, thereby reducing the weight of the implant device 200 and ensuring the strength. It should be noted that the present application does not limit the specific shape of the housing 210, and in other embodiments of the present application, the housing 210 may also be a prism, or other housing structure.

Please refer to fig. 8 and 9 in conjunction with fig. 1, 2 and 7 for the above-mentioned catheter 220. The first portion 222 is a cylindrical dual-lumen catheter 220, the first portion 222 is a rigid material that cannot be bent, the first portion 222 extends along the preset direction X, the first portion 222 is provided with a delivery hole 222a and a wire passing hole 222b, both the delivery hole 222a and the wire passing hole 222b are cylindrical holes extending along the preset direction X, and the diameter of the delivery hole 222a is greater than that of the wire passing hole 222 b. The second part 223 is a flexible thin-wall pipe, the conduit 220 comprises a snake bone conduit 224, the snake bone conduit 224 is arranged on the second part 223 in a penetrating mode, the snake bone conduit 224 is one or more of stainless steel, titanium alloy and platinum-iridium alloy, the snake bone conduit 224 is arranged on the second part 223, the snake bone conduit 224 is provided with a conveying hole 224a, the conveying hole 224a is communicated with the conveying hole 222a to form a guide hole 221, when the second part 223 is in a straightening state, the conveying hole 224a and the conveying hole 222a are integrally arranged in parallel, and at the junction of the first part 222 and the second part 223, the conveying hole 224a is communicated with the conveying hole 222a and is arranged in an inclined staggered mode in the preset direction X. It should be noted that the present application does not limit the specific shapes of the first portion 222, the delivery hole 222a and the wire through hole 222b, in other embodiments of the present application, the first portion 222 may be prism-shaped or prismoid-shaped, the delivery hole 222a and the wire through hole 222b may be prism-shaped or prismoid-shaped, and the diameter of the delivery hole 222a may be smaller than or equal to the diameter of the wire through hole 222 b. It should be noted that the present application does not limit the material of the snake bone catheter 224, and in other embodiments of the present application, the snake bone catheter 224 may also be made of other metal materials such as aluminum alloy.

Preferably, the snake bone duct 224 includes a resilient member (not shown), such as a spring, disposed inside the snake bone duct 224, which facilitates the restoration of the snake bone duct 224 after bending.

Referring to fig. 11 and 12 for the driving mechanism 230, fig. 11 shows a second cross-sectional view of the implant device according to the embodiment of the present application, and fig. 12 shows an enlarged view of a portion a in fig. 11 in combination with fig. 7. The driving mechanism 230 includes a pulling member 231, a sliding member 232, and a driving member 233, and one end of the pulling member 231 is fixed to a side of the snake bone catheter 224 facing away from the first portion 222. The sliding member 232 is slidably connected to the housing 210 along the predetermined direction X, and the pulling member 231 is fixed to the sliding member 232. The driving member 233 is connected to the sliding member 232 for driving the sliding member 232 to move.

Specifically, referring to fig. 8 and 9, the pulling member 231 has a filament-like structure, and the material of the pulling member 231 is one or more of stainless steel wire, nitinol wire, titanium alloy wire, and platinum-iridium alloy wire. The snake bone duct 224 is provided with a fixing ring 224b on the side facing away from the first portion 222, and one end of the pulling member 231 is provided with the fixing ring 224b. When the driving member 233 drives the sliding member 232 to move away from the second portion 223, the pulling member 231 fixed to the sliding member 232 also moves away from the second portion 223, because the first portion 222 cannot be bent, the distance between the two ends of the second portion 223 is shortened, and the second portion 223 is bent around the junction of the first portion 222 and the second portion 223, thereby bending the conduit 220. It should be noted that, in order to reduce the cross-sectional area of the conduit 220, the drawing member 231 is designed to be in a filament shape, so as to reduce the diameter of the wire passing hole 222b, but the present application does not limit the specific shape of the drawing member 231, and in other embodiments of the present application, the drawing member 231 may be in a rod-like structure. It should be noted that the material of the pulling element 231 is not limited in this application, and in other embodiments of the present application, the pulling element 231 may be a synthetic fiber such as a nylon rope. It should be noted that the present application does not limit the fixing manner of the pulling member 231 on the fixing ring 224b, and the pulling member 231 may be fixed on the fixing ring 224b by bonding, hinge joint, laser welding, resistance welding, or the like.

Referring to fig. 11 and 12, the driving member 233 includes a wheel 233a and a gear 233b, the wheel 233a is a sector gear and is rotatably mounted to the housing 210, a gear tooth portion of the wheel 233a is exposed from the housing 210, and a circle center of the sector of the wheel 233a extends along a circumferential direction of the wheel 233a to form a mounting portion 233a1. The gear 233b is fixed to the mounting portion 233a1, and the axis of the gear 233b is collinear with the axis of rotation of the runner 233 a. The slider 232 includes a rack extending in the preset direction X and engaged with the gear 233 b. The user rotates the wheel 233a exposed to the teeth of the housing 210 to rotate the gear 233b, and the gear 233b drives the slider 232 to move through the meshing transmission. In the present embodiment, the fan-shaped design of the rotating wheel 233a facilitates reducing the size of the implantation device 200, making the implantation device 200 an overall elongated structure for the user to handle and carry, but the present application does not limit the specific shape of the rotating wheel 233a, and in other embodiments of the present application, the rotating wheel 233a may be a cylindrical gear. It should be noted that the present application does not limit the specific implementation of the sliding element 232 and the driving element 233, for example, in other embodiments of the present application, the sliding element 232 may include a motor, the driving element 233 includes a touch switch, and a user may control the motor to rotate forward and backward through the driving element 233, so as to achieve the back-and-forth sliding of the sliding element 232.

Preferably, the implant device 200 further includes a self-locking mechanism 240, see fig. 12. The self-locking structure 240 includes an elastic member, such as a spring, a hydraulic cylinder, and a pneumatic cylinder, which is disposed along the axial direction of the wheel 233a, and one end of the elastic member abuts against the casing 210, and the other end abuts against the end surface of the wheel 233a, so as to increase the friction force between the wheel 233a and the casing 210, and the wheel 233a is kept self-locked in a natural state and is not easy to rotate. It should be noted that, the present application does not limit the specific implementation of the self-locking structure 240, in other embodiments of the present application, the self-locking structure 240 may further increase the friction between the rotating wheel 233a and the housing 210 in other manners, for example, increase the friction coefficient between the rotating wheel 233a and the housing 210, and tightly fit and mount the rotating wheel 233a in the housing 210, so as to increase the friction between the rotating wheel 233a and the housing 210, and in other embodiments of the present application, the self-locking structure 240 may further achieve self-locking by increasing the friction of the rotating wheel 233a or the sliding member 232, and the specific implementation is similar to the rotating wheel 233a, which is not repeated herein.

Preferably, the implant device 200 further includes a push rod 250, see fig. 7 in combination with the other figures. The push rod 250 partially extends into the guide hole 221, the push rod 250 is a cylindrical rod shape matched with the guide hole 221, the push rod 250 has a first end 251 located in the guide hole 221 and a second end 252 located outside the guide hole 221, the second end 252 extends out of the housing 210, and a flange 252a is arranged on a side of the second end 252, which is far away from the first end 251. The memory metal wire 111 and the conductive wire 130 extend from the first side 141 to the direction away from the second side 142 to form a base portion 150, a conductive portion 160 is disposed on the side of the base portion 150 away from the sampling portion 140, the memory metal wire 111 and the conductive wire 130 are fixed to the conductive portion 160, and the conductive portion 160 is electrically connected to the conductive wire 130. The base 150 and the conductive part 160 are accommodated in the guide hole 221, the conductive part 160 is disposed at the first end 251, the user pushes the push rod 250 to slide the intracranial electrode module 100 in the guide hole 221, and the flange 252a is used to abut against the housing 210, so as to limit the sliding stroke of the guide hole 221 of the push rod 250, such that the sampling part 140 can be exposed from the guide hole 221, and the base 150 and the conductive part 160 cannot be exposed from the guide hole 221. It should be noted that the present application does not limit the specific structure of the push rod 250, and in other embodiments of the present application, the push rod 250 may not be adapted to the guide hole 221, and may have a prism shape or a prism-frustum shape.

Preferably, the intracranial electrode module 100 further includes a protective sleeve 170, see fig. 13, and fig. 13 shows an enlarged view of B in fig. 4 in combination with the above figures. The protective cover film 170 is made of one or more of silica gel, polyimide, nylon, polytetrafluoroethylene and polyether block polyamide. The protective cover film 170 is fixed to the conductive portion 160 and sleeved on the base portion 150, so that the memory metal wire 111 and the conductive wire 130 in the base portion 150 are arranged in a gathering manner, the intracranial electrode can be conveniently mounted on the guide hole 221, the base portion 150 is relatively isolated from the external environment, and the base portion 150 is protected to a certain extent. It should be noted that the material of the protective cover film 170 is not limited in this application, and in other embodiments of the present application, the protective cover film 170 may be other polymers.

The operation of the intracranial electrode implantation apparatus 1 will be briefly described below with reference to the drawings.

1. The runner 233a is rotated to bend the second portion 223, and the degree of bending of the second portion 223 is adjusted by rotating the runner 233 a.

2. The second portion 223 is inserted into a pre-established bone opening of the patient.

3. The second end 252 of the push rod 250 is pushed to hold the flange 252a against the housing 210, and the intracranial electrode module 100 is pushed into the human body through the bone window and then deployed in the human body.

4. After the detection is finished, the second end 252 of the push rod 250 is pulled in the opposite direction, so that the intracranial electrode module 100 is folded and the second portion 223 is moved out of the bone window from the accommodating guide hole 221.

The power transmission during the bending process of the present implant device 200 will be briefly described with reference to the accompanying drawings.

1. The rotary wheel 233a, the gear 233b and the rotary wheel 233a rotate in synchronization.

2. The slider 232 slides by being engaged with the gear 233 b.

3. The drawing member 231 fixed to the sliding member 232 slides in synchronization with the sliding member 232.

4. The end of the second portion 223 facing away from the first portion 222 is bent under the influence of the pulling member 231.

The electrode sampling point 121 of the intracranial electrode implantation device 1 of the embodiment of the application is located in the sampling part 140, the sampling part 140 can be switched between a gathering state and an unfolding state, and the sampling part 140 can be implanted into a human body in the gathering state and then switched to the unfolding state, so that the intracranial electrode module 100 can be implanted into the human body through a bone window smaller than the intracranial electrode module 100. The doctor only needs to set up less bone window and just can realize implanting a plurality of electrode sampling points 121 human, obtains the detection area bigger than the bone window to reduce the operation wound and reduce the operation risk, and be favorable to patient's recovery, reduce patient's postoperative complication. In the present application, the size of the intracranial electrode module 100 refers to the area of the sampling portion 140 in the expanded state, and the size of the bone window refers to the surface area of the bone window.

On the other hand, the driving mechanism 230 of the implanting device 200 of the intracranial electrode implanting apparatus 1 according to the embodiment of the present application can drive the end of the second portion 223, which is away from the first portion 222, to be away from or close to the first portion 222, so as to bend or straighten the second portion 223, which is convenient for a doctor to adjust the implantation angle of the intracranial electrode module 100, so that the intracranial electrode module 100 can be guided into a human body by following intracranial tissues.

Based on the same inventive concept, the present application further provides an intracranial electrode module, including the intracranial electrode module 100 described above. Due to the inclusion of the intracranial electrode module 100, the intracranial electrode module can also be implanted into a human body through a smaller bone window than the intracranial electrode module.

It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. The above features are combined with each other to form various embodiments not listed above, and all of them are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.

Claims (11)

1. The utility model provides an intracranial electrode module, is applied to and implants the human body, its characterized in that includes:

a substrate;

the electrode sampling point groups are arranged on the substrate and exposed on the surface of the substrate, and comprise electrode sampling points; and

the conductive wire is arranged on the substrate and is electrically connected with the electrode sampling point;

the intracranial electrode module comprises a sampling part, the electrode sampling point is positioned in the sampling part, and the sampling part can be switched between a gathering state and an unfolding state;

in the unfolded state, the sampling part is unfolded to be in a fan shape, the sampling part is provided with a first side and a second side which are oppositely arranged along the radial direction of the sampling part, the sampling part is unfolded to the second side and is wider than the first side, and the sampling point groups of the electrodes are arranged at intervals along the unfolded circumferential direction of the sampling part;

in the gathered state, the second side is gathered.

2. The intracranial electrode module as recited in claim 1 wherein each set of electrode sampling points comprises at least two electrode sampling points;

in the unfolding state, all the electrode sampling points in the same electrode sampling point group are distributed at intervals along the radial direction of the sampling part.

3. The intracranial electrode module as recited in claim 2 wherein each conductive wire corresponds to a set of the electrode sampling points;

the conductive wire is connected with each electrode sampling point in the same electrode sampling point group.

4. The intracranial electrode module as recited in claim 2, wherein each conductive wire corresponds to one sampling point of the electrode.

5. The intracranial electrode module as recited in claim 1, wherein the base comprises:

the two memory metal wires are arranged oppositely; and

a substrate extending from one of the memory wires to the other memory wire;

the two memory metal wires are used for driving the base material to open so that the sampling part is switched from the gathering state to the unfolding state.

6. The intracranial electrode module as recited in claim 5, wherein the memory wire comprises a nickel-titanium alloy.

7. The intracranial electrode module as recited in claim 5, wherein the substrate is a polymeric film.

8. The intracranial electrode module as recited in claim 1,

the conductive wire comprises a metal wire and an insulating coating;

the metal wire is connected with the electrode sampling point, and the insulating coating is coated on the surface of the metal wire.

9. An intracranial electrode implant device, comprising:

a guide tube provided with at least one guide hole having one end penetrating through the guide tube;

the intracranial electrode module as recited in any one of claims 1-8, which is at least partially received in the guide hole; and

the push rod is at least partially accommodated in the guide hole and used for pushing the intracranial electrode module to move relative to the catheter so as to switch the sampling part between the gathering state and the unfolding state;

in the gathering state, the sampling part gathers in the guide hole;

in the unfolded state, the sampling part extends out of the guide hole and is unfolded into a fan shape.

10. The intracranial electrode implant device as recited in claim 9, wherein the pushrod has a first end positioned within the guide hole and a second end positioned outside the guide hole;

the intracranial electrode module further comprises a base part and a conductive part, the base part and the conductive part are contained in the guide hole, one end of the base part is connected with the first side, the other end, away from the first side, of the base part is connected with the conductive part, and the conductive part is connected with the conductive wire and arranged at the first end.

11. The intracranial electrode implant device as recited in claim 10, wherein the end of the catheter from which the sampling portion extends is bendable.

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