Implantable skull stimulation device

Abstract

The utility model discloses a skull implantable stimulation device, which comprises a stabbing nerve stimulator and at least one fixing part, the thorn nerve stimulator is used for sending out a nerve stimulation signal; the fixing part is arranged on a curved surface formed by the curvature k1 in the first direction and the curvature k2 in the second direction, and the nerve stimulator is fixed to the skull through the fixing part; wherein the curvature k1 is the curvature in the skull sagittal direction anatomical data; the curvature k2 is the curvature in the skull coronal direction anatomical data. After the skull implantable stimulation device is implanted, the fixing part can be attached to the skull, so that the scalp tension caused after the stimulation device is implanted is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a cranial implantable stimulation device. Background Technology

[0002] In the treatment of neurological disorders such as Parkinson's disease and epilepsy, deep brain stimulation (DBS) is often used to stimulate the corresponding nuclei. DBS systems typically involve implanting a pulse generator in the chest, which extends to the brain via lead wires and electrode wires to deliver stimulation. To achieve this extension, long subcutaneous tunnels need to be created, and the wires are subjected to prolonged soft tissue traction, increasing the risks of trauma recovery, postoperative infection, and electrode damage.

[0003] Furthermore, some deep brain stimulation (DBS) systems in related technologies can employ cranial implantation of a neurostimulator to apply electrical stimulation. The neurostimulator is mounted on the skull to reduce subcutaneous punctures and decrease stress on the interface and electrodes. In this method, a groove is pre-cut in the skull, and then the neurostimulator is installed in the groove. However, in these technologies, a good fit between the neurostimulator and the skull cannot be achieved, resulting in greater scalp tension after implantation and increased patient discomfort. Utility Model Content

[0004] The purpose of this invention is to provide a cranial implantable stimulation device to reduce scalp tension caused after the stimulation device is implanted.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A cranial implantable stimulation device, comprising:

[0007] A nerve stimulator is used to emit nerve stimulation signals;

[0008] At least one fixing part is provided on the curved surface formed by the first direction curvature k1 and the second direction curvature k2, and the nerve stimulator is fixed to the skull through the fixing part;

[0009] Wherein, the curvature k1 is the curvature in the sagittal anatomical data of the skull; and the curvature k2 is the curvature in the coronal anatomical data of the skull.

[0010] Preferably, at least three fixing parts are provided, and they are respectively provided on the curved surfaces formed by curvature k1 and curvature k2; a portion of the fixing parts are located on the side of the mounting base along the first direction, and a portion of the fixing parts are located on the side of the mounting base along the second direction.

[0011] Preferably, a mounting seat is further included, the neural stimulator is mounted on the mounting seat, the mounting seat is connected with the fixing part; the mounting seat and the fixing part are connected in a curvature k1 in a first direction, and / or the mounting seat and the fixing part are connected in a curvature k2 in a second direction.

[0012] Preferably, an included angle formed by the first direction and the second direction is 80-100°.

[0013] Preferably, each of the fixing parts is respectively provided with a fixing hole, and the fixing part is fixedly mounted on the skull through a bone screw penetrating through the fixing hole.

[0014] Preferably, the mounting seat comprises a bottom wall and a side wall, the bottom wall and the side wall surround to form a mounting cavity for accommodating the neural stimulator; the fixing part extends from the side wall towards the outside of the mounting seat.

[0015] Preferably, the bottom wall is provided with an assembly part and a through hollow window, and the mounting seat is connected with the neural stimulator through the assembly part.

[0016] Preferably, the mounting seat is provided with an undercut for limiting the neural stimulator, and the undercut extends from the side wall towards the inside of the mounting seat.

[0017] Preferably, adjacent fixing parts are separated from each other, or adjacent fixing parts are connected by a connecting plate and form an integral structure.

[0018] Preferably, a fixing member is further included, the fixing member comprises a first connecting part connected with the fixing part, and a first mounting part extending from the first connecting part, and the fixing part is indirectly held with the skull through the fixing member.

[0019] Preferably, the fixing member further comprises at least one pad, the pad is mounted at the first connecting part or the first mounting part on the side of the fixing member facing the skull, and the first connecting part and the first mounting part are fixed to the skull through a bone screw.

[0020] Preferably, the neural stimulator forms a curvature k1 in the first direction, and the neural stimulator forms a curvature k2 in the second direction.

[0021] Preferably, the fixing part is arranged on a shell of the neural stimulator;

[0022] Preferably, the fixing part is located on a side edge of the neural stimulator in the first direction, and the fixing part and the neural stimulator are connected in a curvature k1 in the first direction, and / or the fixing part is located on a side edge of the neural stimulator in the second direction, and the fixing part and the neural stimulator are connected in a curvature k2 in the second direction.

[0023] Preferably, the fixing part comprises a second connecting part and a second mounting part, the second connecting part is fixedly mounted on the shell of the nerve stimulator, and the second mounting part is used for being fitted with the skull and fixed to the skull.

[0024] Compared with the prior art, the utility model has at least the following beneficial effects:

[0025] By designing a hyperbolic structure based on the statistical data of human head curve, the fixing part is arranged on the curved surface formed by the curvature k1 and the curvature k2, and the arrangement position of the fixing part is matched with the curved surface profile of the skull surface. When the scalp is covered on the fixing part, the transition is relatively smooth, and the scalp is basically not tightened and has a large tension due to the large change of the curvature between the fixing part and the skull, so that the tension generated by the skull implantable stimulating device after implantation is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure schematic view of the skull implantable stimulating device of the utility model embodiment 1;

[0027] Figure 2 is an exploded view of the skull implantable stimulating device of the utility model embodiment 1;

[0028] Figure 3 is a partial structure schematic view of the skull implantable stimulating device of the utility model embodiment 1;

[0029] Figure 4 is a partial structure schematic view of the skull implantable stimulating device of the utility model embodiment 1 when the connecting plate is arranged;

[0030] Figure 5 is a structure schematic view of the skull implantable stimulating device of the utility model embodiment 1 when the fixing part is arranged;

[0031] Figure 6 is a partial exploded view of the skull implantable stimulating device of the utility model embodiment 1 when the fixing part is arranged;

[0032] Figure 7 is a structure schematic view of the fixing part of the utility model embodiment 1;

[0033] Figure 8 is a structure schematic view of the skull implantable stimulating device of the utility model embodiment 2;

[0034] Figure 9 is an exploded view of the skull implantable stimulating device of the utility model embodiment 2.

[0035] In the figure: 1, stimulation module; 11, mounting seat; 111, bottom wall; 1111, assembly part; 1112, hollow window; 112, side wall; 112a, first side wall; 112b, second side wall; 112c, third side wall; 112d, fourth side wall; 113, mounting cavity; 114, reverse buckle; 115, side notch; 12, nerve stimulator; 2, fixed part; 21, fixed hole; 22, second connecting part; 23, second mounting part; 24, connecting plate; 3, fixing piece; 31, first connecting part; 311, connecting hole; 32, first mounting part; 321, mounting hole; 33, cushion block; 331, avoiding hole; 4, bone screw; 5, screw. DETAILED DESCRIPTION

[0036] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and fully convey the inventive aspects of the example implementations to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will be omitted from descriptions of subsequent figures.

[0037] The words expressing position and direction described in the present application are explained by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.

[0038] Example 1

[0039] Referring to Figures 1 to 7 The present application provides a skull implantable stimulation device, which comprises a stimulation module 1 and a fixed part 2, and can further comprise a fixing piece 3.

[0040] Referring to Figure 1 The stimulation module 1 is used to send nerve stimulation signals to output stimulation to the deep brain and treat corresponding nervous system diseases. The stimulation module 1 can comprise a mounting seat 11 and a nerve stimulator 12 mounted on the mounting seat 11. The nerve stimulator 12 is a component for applying electrical stimulation to the deep brain. The mounting seat 11 is used to assist the installation of the nerve stimulator 12. Specifically, the mounting seat 11 can be fixed to the skull through the fixed part 2, and the nerve stimulator 12 is mounted on the mounting seat 11, so that the nerve stimulator 12 is mounted on the skull.

[0041] Referring to Figure 2 and Figure 3In some embodiments, the mounting base 11 can include a bottom wall 111 and side walls 112, and the side walls 112 can be provided with four, which are located around the bottom wall 111. The four side walls 112 and the bottom wall 111 enclose a mounting cavity 113 with an open upper end, and the neural stimulator 12 can be mounted in the mounting cavity 113 from the open upper end of the mounting cavity 113. In addition, adjacent side walls 112 can be connected and formed as an integral structure, or adjacent side walls 112 can be separated from each other, so that the mounting base 11 forms a side gap 115, which allows the connecting lead for the neural stimulator 12 to pass through, so that the neural stimulator 12 can be connected to external equipment through the connecting lead. In this embodiment, the four side walls 112 are respectively a first side wall 112a, a second side wall 112b, a third side wall 112c and a fourth side wall 112d arranged in sequence along the circumference of the mounting base 11. Only the first side wall 112a and the fourth side wall 112d are spaced apart to form the side gap 115, and the other adjacent side walls 112 are connected to each other and formed as an integral structure.

[0042] The bottom wall 111 can be provided with an assembly portion 1111 for connecting the neural stimulator 12. The assembly portion 1111 is fixedly connected with the neural stimulator 12 to fix the neural stimulator 12 on the bottom wall 111. Among them, the assembly portion 1111 extends from the bottom wall 111 towards the inside of the mounting cavity 113, and the assembly portion 1111 can be a protruding column provided with a threaded hole, and the assembly portion 1111 is fixed with the neural stimulator 12 by a screw; or the assembly portion 1111 can be a protruding column provided with a buckle, and the assembly portion 1111 is connected with the neural stimulator 12 by buckling. In addition, the assembly portion 1111 can also be connected with the neural stimulator 12 through other fixed connection structures, and the assembly portion 1111 can not be limited to be connected with the neural stimulator 12 by only one fixed connection structure. The assembly portion 1111 can be connected with the neural stimulator 12 by multiple fixed connection structures such as screw fixing and buckle fixing.

[0043] The bottom wall 111 can also be provided with a hollow window 1112, and the hollow window 1112 penetrates the bottom wall 111. The provision of the hollow window 1112 can reduce the weight of the mounting base 11, and can facilitate observation of the intracranial condition. Among them, the hollow window 1112 can be provided with one or more, when the hollow window 1112 is provided with multiple, the multiple hollow windows 1112 are separated from each other, and the size and shape of the multiple hollow windows 1112 can be the same or different; the shape of the hollow window 1112 can be rectangular, circular, trapezoidal or other shapes.

[0044] To prevent the neural stimulator 12 from being detached from the installation cavity 113 of the installation seat 11, the installation seat 11 can further be provided with a reverse buckle 114 for clamping the neural stimulator 12. The reverse buckle 114 can extend from the side wall 112 of the installation seat 11 towards the inside of the installation seat 11. The part of the reverse buckle 114 extending towards the inside of the installation seat 11 can be located above the neural stimulator 12 and abut against the neural stimulator 12, and the reverse buckle 114 and the bottom wall 111 of the installation seat 11 jointly clamp and limit the neural stimulator 12 to prevent the neural stimulator 12 from being detached from the installation cavity 113; or the part of the reverse buckle 114 extending towards the inside of the installation seat 11 is located above the neural stimulator 12 and there is a small gap between the reverse buckle 114 and the neural stimulator 12, and when the neural stimulator 12 tends to be detached, the reverse buckle 114 abuts against the neural stimulator 12 to limit the further movement of the neural stimulator 12, thereby preventing the neural stimulator 12 from being detached from the installation cavity 113. The reverse buckle 114 can be a sheet structure and has a certain elasticity, and when the neural stimulator 12 is installed or removed, the reverse buckle 114 can elastically deform towards the outside of the installation seat 11 to facilitate the installation and removal of the neural stimulator 12, and when the neural stimulator 12 is installed or removed, the reverse buckle 114 resets and can abut against the neural stimulator 12. The installation seat 11 can be provided with one or more reverse buckles 114, and in the embodiment, the installation seat 11 can be provided with two reverse buckles 114, and the two reverse buckles 114 jointly limit the neural stimulator 12 to prevent the neural stimulator 12 from being detached from the installation cavity 113. In other embodiments, the installation seat 11 can also be provided with three, four, five or six reverse buckles 114.

[0045] With reference to Figure 3The fixing part 2 can be a lug extending from the side wall 112 of the mounting base 11 towards the outside of the mounting base 11. The fixing part 2 can be formed in an integral structure with the mounting base 11. The fixing part 2 can be provided with a fixing hole 21. When the fixing part 2 abuts against the skull, a bone screw 4 can be used to pass through the fixing hole 21 of the fixing part 2 and be placed in the skull, and the bone screw 4 can press the fixing part 2 against the skull to fix the fixing part 2 to the skull. The fixing part 2 can be provided with at least three fixing parts 2, and the at least three fixing parts 2 can be used to fix the skull implantable stimulation device to the skull to improve the fixing effect of the skull implantable stimulation device. Some of the fixing parts 2 can be located on the side of the mounting base 11 along the first direction, and some of the fixing parts 2 can be located on the side of the mounting base 11 along the second direction. The first direction and the second direction can be perpendicular to each other or approximately perpendicular to each other, for example, the included angle between the first direction and the second direction is 80-100°. Preferably, the first direction can be the length direction of the stimulation module 1, the side of the mounting base 11 along the first direction can be the left and right sides of the mounting base 11, and the second direction can be the width direction of the stimulation module 1, the side of the mounting base 11 along the second direction can be the front and rear sides of the mounting base 11, the fixing part 2 located on the side of the mounting base 11 along the first direction can be located on the left side or the right side of the stimulation module 1, and the fixing part 2 located on the side of the mounting base 11 along the second direction can be located on the front side or the rear side of the stimulation module 1.

[0046] In the embodiment, the fixing part 2 can be provided with three fixing parts 2. Two fixing parts 2 are located on the side of the mounting base 11 along the second direction, and one fixing part 2 is located on the front side of the mounting base 11, and the other fixing part 2 is located on the rear side of the mounting base 11. One fixing part 2 is located on the side of the mounting base 11 along the first direction, and can be located on the right side of the mounting base 11.

[0047] In some specific embodiments, the fixing parts 2 are independent of each other, each fixing part 2 is provided with a fixing hole 21, and each fixing part 2 is fixed to the skull by a bone screw 4.

[0048] Referring to Figure 4In some specific embodiments, the adjacent fixed parts 2 can be connected by connecting plates 24. Specifically, the adjacent fixed parts 2 and the corresponding connecting plates 24 form an integrated structure, and the adjacent fixed parts 2 and the corresponding connecting plates 24 jointly form a mesh structure. One or more fixing holes 21 can be arranged on the connecting plate 24, and the overall structure formed by the connecting plate 24 and the adjacent fixed parts 2 can have multiple fixing holes 21 to improve the stability of the mounting seat 11 when mounted on the skull. Alternatively, the connecting plate 24 can be only a plate body connecting the adjacent fixed parts 2, and no fixing hole 21 is arranged on the connecting plate 24. Specifically, for the fixed parts 2 located on different sides and adjacent to each other, since the distance between them is large, one or more fixing holes 21 can be arranged on the connecting plate 24 connecting the adjacent fixed parts 2. For example, one fixed part 2 is located on the right side of the stimulation module 1, and the other fixed part 2 adjacent to the fixed part 2 is located on the front side of the stimulation module 1, and the connecting plate 24 connecting the adjacent fixed parts 2 is provided with one or more fixing holes 21. For the fixed parts 2 located on the same side and adjacent to each other, since the distance between the adjacent fixed parts 2 is small, the first connecting part 31 connecting the adjacent fixed parts 2 can not be provided with a fixing hole 21.

[0049] In order to reduce the tension of the scalp caused by the implanted skull implantable stimulation device, the fixed part 2 is fixed and mounted on the curved surface formed by the first direction curvature k1 and the second direction curvature k2. The curvature k1 is the curvature in the sagittal direction anatomical data of the skull, which is the average value according to the actual measurement, and the curvature k1 is the same as or approximately the same as the curvature of the sagittal direction of the skull of most patients. The curvature k2 is the curvature adaptation in the coronal direction anatomical data of the skull, which is the average value according to the actual measurement, and the curvature k2 is the same as or approximately the same as the curvature of the coronal direction of the skull of most patients. Therefore, the curved surface formed by the curvature k1 and the curvature k2 is adapted to the surface of the skull of most patients.

[0050] By designing a hyperbolic structure based on the statistical data of the human head curve, the fixed part 2 is arranged on the curved surface formed by the curvature k1 and the curvature k2, and the arrangement position of the fixed part 2 is adapted to the curved profile of the surface of the skull. When the scalp covers the fixed part 2, the transition is relatively smooth, and the scalp is basically not tight and does not have a large tension phenomenon due to the large change of the curvature between the fixed part 2 and the skull, effectively reducing the tension of the scalp caused by the implanted skull implantable stimulation device.

[0051] In some specific embodiments, the top profile of the mounting seat 11 can also be adapted to the curved surface formed by the curvature k1 and the curvature k2. The curvature of the mounting seat 11 and the fixed part 2 in the first direction is the curvature k1 adapted to the curvature in the sagittal direction anatomical data of the skull, and the curvature of the mounting seat 11 and the fixed part 2 in the second direction is the curvature k2 adapted to the curvature in the coronal direction anatomical data of the skull.

[0052] In some embodiments, the mounting seat 11 and the fixing part 2 can be made of a high polymer material, such as polysulfone, polyether ether ketone, polycarbonate, or the like, or can be made of a metal material with certain plasticity, such as pure titanium, titanium alloy, stainless steel, or the like.

[0053] In some embodiments, the top profile of the nerve stimulator 12 can also be adapted to the curved surface formed by the curvature k1 and the curvature k2. The curvature of the nerve stimulator 12 in the first direction is adapted to the curvature k1, and the curvature of the nerve stimulator 12 in the second direction is adapted to the curvature k2.

[0054] Referring to Figure 5 and Figure 6 In some embodiments, the fixing part 2 can be connected with a fixing member 3, which is used to assist the installation between the mounting seat 11 and the skull. The fixing member 3 can include a first connecting part 31 and a first mounting part 32. The first connecting part 31 is sleeved on the corresponding fixing part 2, and the first connecting part 31 is provided with a connecting hole 311 which is in communication with the fixing hole 21 of the fixing part 2. One bone screw 4 can pass through the connecting hole 311 of the first connecting part 31 and the fixing hole 21 of the corresponding fixing part 2 to fix the fixing member 3 and the fixing part 2 on the skull, and the fixing member 3 and the fixing part 2 remain fixed.

[0055] A pad 33 can be provided at the first connecting part 31 of the side of the fixing member 3 facing the skull, which is used to abut against the skull. When the skull profile of some patients is different from the general profile of the skull, the skull profile of these patients is not adapted to the curved surface formed by the curvature k1 and the curvature k2, and when only the fixing part 2 is used, a part of the fixing parts 2 can be in contact with the skull, and a part of the fixing parts 2 can be spaced apart from the skull. At this time, the fixing part 2 can indirectly abut against the skull through the first connecting part 31, and the pad 33 at the first connecting part 31 compensates for the distance between the fixing part 2 and the skull, so that the pad 33 of the first connecting part 31 can abut against the skull, and the stability of the installation between the stimulating module 1 and the skull is ensured. The pad 33 on the first connecting part 31 can be provided with a relief hole 331 which is in communication with the connecting hole 311, and the relief hole 331 of the pad 33 is larger than the outer diameter of the corresponding bone screw 4, so as to facilitate the bone screw 4 to pass through the pad 33 and be connected with the skull. The distance between the relief hole 331 of the pad 33 and the bone screw 4 can be 0.5-1 mm. The thickness of the pad can be 0-5 mm.

[0056] The first mounting portion 32 can be in an integral structure with the first connecting portion 31, and the first mounting portion 32 can be provided with a mounting hole 321 through which the bone screw 4 passes, and the bone screw 4 can pass through the mounting hole 321 to fix the first mounting portion 32 to the skull. The first mounting portion 32 on the side of the fixing member 3 facing the skull can be provided with a pad 33, and the pad 33 at the first mounting portion 32 is used to abut against the skull. The pad 33 at the first mounting portion 32 can be provided with a relief hole 331 communicating with the mounting hole 321, and the relief hole 331 of the pad 33 is larger than the outer diameter of the corresponding bone screw 4, so that the bone screw 4 passes through the pad 33 and is connected with the skull. The relief hole 331 of the pad 33 can be spaced apart from the bone screw 4 by 0.5-1mm. The thickness of the gasket can be 0-5mm.

[0057] When the fixing portion 2 and the first connecting portion 31 are used for a long time and many times, the bone screw 4 is repeatedly disassembled and assembled with the fixing portion 2 and the first connecting portion 31, and wear is generated at this time. At this time, the fixing portion 2 and the first connecting portion 31 have poor fixing effect with the skull, and at this time, the first mounting portion 32 can be used to fix the skull, and the stable connection of the fixing portion 2 and the fixing member 3 with the skull is ensured through the assistance of the first mounting portion 32.

[0058] In the plurality of fixing portions 2, the fixing member 3 can be connected to each fixing portion 2 respectively; or, a part of the fixing portions 2 can be connected with the fixing member 3, and the fixing member 3 indirectly abuts against the skull through the part of the fixing portions 2, and the part of the fixing portions 2 is not connected with the fixing member and directly abuts against the skull. The mounting hole 321 of the first mounting portion 32 can be provided with a plurality of mounting holes 321, and the plurality of mounting holes 321 of the first mounting portion 32 are distributed on the opposite sides of the corresponding fixing portion 2. Specifically, when the fixing portion 2 is located on the side of the mounting seat 11 along the first direction, the plurality of mounting holes 321 of the first mounting portion 32 are located on the opposite sides of the fixing portion 2 along the second direction; when the fixing portion 2 is located on the side of the mounting seat 11 along the second direction, the plurality of mounting holes 321 of the first mounting portion 32 are located on the opposite sides of the fixing portion 2 along the first direction. In the embodiment, the first mounting portion 32 is provided with two mounting holes 321, and the two mounting holes 321 are distributed on the opposite sides of the corresponding fixing portion 2 and are symmetrically arranged with respect to the corresponding fixing portion 2.

[0059] In the installation of the skull-implanted stimulation device on the skull, the nerve stimulator 12 can be installed on the mounting seat 11 first, so that the nerve stimulator 12 and the mounting seat 11 are fixed. The mounting seat 11 is connected with multiple fixing parts 2. Since the multiple fixing parts 2 cannot ensure that each part is in close contact with the surface of the skull, some fixing parts 2 can be spaced apart from the skull. The fixing part 2 spaced apart from the skull can be connected with a fixing member 3. By means of different gasket thicknesses on the fixing member 3, the fixing member 3 is stably attached to the corresponding position of the skull. The fixing member 3 and the fixing part 2 are fixed to the skull by means of the bone screw 4, thereby realizing the installation of the skull-implanted stimulation device. When the fixing part 2 can be stably attached to the surface of the skull, the fixing part 2 can not be connected with the fixing member 3. When the fixing part 2 cannot be attached to the surface of the skull, the fixing part 2 is connected with the fixing member 3, the fixing member 3 is attached to the skull, and the fixing part 2 and the fixing member 3 cooperate to ensure the installation of the skull-implanted stimulation device.

[0060] Embodiment 2

[0061] The present embodiment is basically the same as Embodiment 1, except that in the present application, the stimulation module 1 is the nerve stimulator 12, and the stimulation module 1 does not include the mounting seat 11. The fixing part 2 of the present application can be similar in structure to the fixing member 3 in the embodiment.

[0062] As shown in Figs. Figure 8 and Figure 9 In the present application, the nerve stimulator 12 is directly connected with the fixing part 2, and the nerve stimulator 12 is installed on the skull through the fixing part 2. Among them, the fixing part 2 is located at the side of the nerve stimulator 12, and the fixing part 2 is arranged on the curved surface formed by the curvature k1 and the curvature k2.

[0063] When the fixing part 2 is located at the side of the nerve stimulator 12 along the first direction, the curvature formed by the fixing part 2 and the nerve stimulator 12 in the first direction can be k1; when the fixing part 2 is located at the side of the nerve stimulator 12 along the second direction, the curvature formed by the fixing part 2 and the nerve stimulator 12 in the second direction can be k2.

[0064] In the present embodiment, the fixing part 2 can be provided in plurality, and the plurality of fixing parts 2 are respectively connected with the nerve stimulator 12, and the plurality of fixing parts 2 are distributed on at least two sides of the nerve stimulator 12. In the present embodiment, the fixing part 2 can be provided in two, and the two fixing parts 2 are distributed on opposite sides of the nerve stimulator 12 along the second direction, and the two fixing parts 2 are fixedly connected with the nerve stimulator 12, respectively.

[0065] The fixing part 2 comprises a second connecting part 22 and a second mounting part 23. The second connecting part 22 can cover the nerve stimulator 12, and the second connecting part 22 is provided with a through hole. When it is needed to connect the fixing part 2 with the nerve stimulator 12, a screw 5 can be used to pass through the through hole of the second connecting part 22 and be connected with the nerve stimulator 12, so as to fix the second connecting part 22 on the nerve stimulator 12, and then the connection between the fixing part 2 and the nerve stimulator 12 is completed. The second mounting part 23 is used to be combined with the skull, and the second mounting part 23 is provided with a mounting hole 321. When the fixing part 2 is mounted on the skull, a bone screw 4 can be used to pass through the mounting hole 321 to fix the second mounting part 23 on the skull, and then the mounting of the fixing part 2 is realized. The mounting hole 321 of the second mounting part 23 can be provided with a plurality of mounting holes 321, and the plurality of mounting holes 321 of the second mounting part 23 are distributed on the opposite sides of the second connecting part 22. In the embodiment, the second mounting part 23 is provided with two mounting holes 321, and the two mounting holes 321 are distributed on the opposite sides of the second connecting part 22 and are symmetrically arranged relative to the second connecting part 22.

[0066] The side of the second mounting part 23 facing the skull can not be provided with the pad 33, and the second mounting part 23 can be directly combined with the skull and be mounted on the skull through the bone screw 4. Alternatively, when the contour of the skull is not a normal contour, there can be a gap between a part of the second mounting part 23 and the skull, and the side of the part of the second mounting part 23 facing the skull can also be provided with the pad 33. The part of the second mounting part 23 is combined with the skull through the pad 33, so as to ensure the fixing effect of the fixing part 2.

[0067] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as the limitation of the utility model. The ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments without departing from the principles and purposes of the utility model, and all these changes should belong to the protection scope of the utility model claim.

Claims

1. A cranial implantable stimulation device, characterized in that, include: A nerve stimulator (12) is used to emit nerve stimulation signals; At least one fixing part (2) is provided on the curved surface formed by the first direction curvature k1 and the second direction curvature k2, and the nerve stimulator (12) is fixed to the skull through the fixing part (2); Wherein, the curvature k1 is the curvature in the sagittal anatomical data of the skull; and the curvature k2 is the curvature in the coronal anatomical data of the skull.

2. The cranial implantable stimulation device according to claim 1, characterized in that, The fixing part (2) is provided in at least three parts, and is respectively provided on the curved surface formed by curvature k1 and curvature k2; a portion of the fixing parts (2) are located on the side of the nerve stimulator (12) along the first direction, and a portion of the fixing parts (2) are located on the side of the nerve stimulator (12) along the second direction.

3. The cranial implantable stimulation device according to claim 1, characterized in that, It also includes a mounting base (11), on which the neurostimulator (12) is mounted, and the mounting base (11) is connected to the fixing part (2); the curvature of the mounting base (11) and the fixing part (2) in a first direction is k1, and / or the curvature of the mounting base (11) and the fixing part (2) in a second direction is k2.

4. The cranial implantable stimulation device according to claim 2, characterized in that, The angle formed by the first direction and the second direction is 80-100°.

5. The cranial implantable stimulation device according to claim 1, characterized in that, Each of the fixation parts (2) is provided with a fixation hole (21), and the fixation part (2) is fixedly installed on the skull by a bone nail (4) passing through the fixation hole (21).

6. The cranial implantable stimulation device according to claim 3, characterized in that, The mounting base (11) includes a bottom wall (111) and a side wall (112), the bottom wall (111) and the side wall (112) forming a mounting cavity (113) for accommodating the nerve stimulator (12); the fixing part (2) extends from the side wall (112) toward the outside of the mounting base (11).

7. The cranial implantable stimulation device according to claim 6, characterized in that, The bottom wall (111) is provided with an assembly part (1111) and a through-hole window (1112), and the mounting base (11) is connected to the nerve stimulator (12) through the assembly part (1111).

8. The cranial implantable stimulation device according to claim 6, characterized in that, The mounting base (11) is provided with a buckle (114) for limiting the nerve stimulator (12), the buckle (114) extending from the side wall (112) toward the inside of the mounting base (11).

9. The cranial implantable stimulation device according to claim 3, characterized in that, The adjacent fixing parts (2) are separated from each other, or the adjacent fixing parts (2) are connected by a connecting plate (24) to form an integral structure.

10. The cranial implantable stimulation device according to claim 3, characterized in that, It also includes a fixing member (3), which includes a first connecting part (31) connected to the fixing part (2) and a first mounting part (32) extending from the first connecting part (31), wherein the fixing part (2) is indirectly fixed to the skull through the fixing member (3).

11. The cranial implantable stimulation device according to claim 10, characterized in that, The fixation member (3) further includes at least one pad (33), which is installed at the first connecting part (31) or the first mounting part (32) on the side of the fixation member (3) facing the skull. Both the first connecting part (31) and the first mounting part (32) are fixed to the skull by bone screws (4).

12. The cranial implantable stimulation device according to claim 1, characterized in that, The curvature formed by the neurostimulator (12) in the first direction is k1, and the curvature formed by the neurostimulator (12) in the second direction is k2.

13. The cranial implantable stimulation device according to claim 12, characterized in that, The fixing part (2) is disposed on the housing of the nerve stimulator (12); Wherein, the fixing part (2) is located on the side of the nerve stimulator (12) along the first direction, and the curvature of the fixing part (2) and the nerve stimulator (12) in the first direction is k1, and / or, the fixing part (2) is located on the side of the nerve stimulator (12) along the second direction, and the curvature of the fixing part (2) and the nerve stimulator (12) in the second direction is k2.

14. The cranial implantable stimulation device according to claim 13, characterized in that, The fixing part (2) includes a second connecting part (22) and a second mounting part (23). The second connecting part (22) is fixedly mounted on the housing of the nerve stimulator (12), and the second mounting part (23) is used to attach to and fix to the skull.

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