Implantation head, implantation device for a flexible electrode and implantation system

Abstract

The implantation head, the implantation device of the flexible electrode and the implantation system, the implantation head comprises: an implantation needle for forming a physical connection with the flexible electrode; a guide assembly for guiding the movement of the implantation needle, the guide assembly comprises a guide tube sleeved on the implantation needle, the tip end of the guide tube is a pointed end, and the tip end of the guide tube is close to one end of the implantation object. By adopting the above scheme, the straightness of the implantation needle and the stability of the implantation process can be improved.

Description

Technical Field

[0001] This invention relates to the field of brain-computer interfaces, and more particularly to an implantation head, a flexible electrode implantation device, and an implantation system. Background Technology

[0002] Brain-computer interface technology is being developed and gradually improved by domestic and foreign scientific research and commercial institutions because it has the potential to bring disruptive progress and innovation to human medicine, health and life.

[0003] Flexible electrode implantation devices, as an important component in the field of brain-computer interfaces, allow flexible electrodes to be implanted into the brain. To minimize damage to the brain tissue and ensure minimal deviation between the actual and pre-set implantation sites, high straightness is required during the implantation process. This is especially true when the flexible electrodes are implanted in the deep brain, where the implantation depth typically exceeds 3 cm. This places even higher demands on the device's range of motion, stability, and straightness. Currently available implantation devices cannot meet these requirements for range of motion, stability, and straightness. Summary of the Invention

[0004] The technical problem solved by this invention is that existing implantable devices cannot meet the requirements for movement range, stability, and straightness.

[0005] To address the aforementioned technical problems, this invention provides an implant head, comprising: an implant needle for forming a physical connection with a flexible electrode; and a guiding component for guiding the movement of the implant needle, wherein the guiding component includes a guide tube sleeved on the implant needle, the end of the guide tube being a pointed tip, and the end of the guide tube pointing towards the implanted object.

[0006] Optionally, the end of the guide tube near the tip has a cut that exposes a portion of the surface of the implantation needle.

[0007] Optionally, the tip includes a bevel with a slope angle ranging from 20 degrees to 50 degrees.

[0008] Optionally, the guiding assembly further includes: a sleeve assembly, one end of which is connected to the guide tube, the sleeve assembly having a receiving cavity; and a sliding part, one end of which is connected to the implantation needle, the other end of which is connected to a driving mechanism, the sliding part moving within the receiving cavity under the drive of the driving mechanism to drive the implantation needle to move.

[0009] Optionally, along the direction of movement of the sliding part within the accommodating cavity, the sliding part has a first end and a second end disposed opposite to each other. The first end is provided with an implantation needle mounting hole for connecting the implantation needle, and the second end is provided with an accommodating groove for connecting the driving mechanism, wherein the first end is close to the implantation needle.

[0010] Optionally, the sleeve assembly includes: a sleeve, wherein the accommodating cavity is disposed in the sleeve; and a mounting portion connected to the guide tube and the sleeve for connecting the guide tube to the sleeve.

[0011] Optionally, the flexible electrode is integrated into a flexible electrode assembly, the flexible electrode assembly further includes a flexible electrode sheet connected to the flexible electrode, and the implantation head further includes a first mounting seat connected to the sleeve, the first mounting seat being used to mount the flexible electrode sheet.

[0012] This invention also provides a flexible electrode implantation device, which drives any of the above-mentioned implantation heads to implant a flexible electrode. The flexible electrode implantation device includes: a driving mechanism, including: a driving part and a transmission assembly, the driving part being used to drive the transmission assembly to move linearly; a transmission switching mechanism connected to the transmission assembly, and a guide assembly for connecting the implantation head; wherein, when the transmission switching mechanism and the transmission assembly are locked, the transmission assembly is in a first transmission state, and the transmission assembly drives the implantation needle and the guide tube as a whole to move toward the implantation object; when the transmission switching mechanism and the transmission assembly are unlocked, the transmission assembly is in a second transmission state, and the transmission assembly drives the implantation needle to move relative to the guide tube until the implantation stroke reaches a set stroke.

[0013] Optionally, the drive mechanism further includes a base for mounting the drive mechanism and the transmission switching mechanism.

[0014] Optionally, the transmission assembly includes: a transmission part connected to the drive part; a first transmission rod connected to the transmission part and connected to the guide assembly via the transmission switching mechanism; wherein, when the transmission assembly is in the first transmission state, the transmission switching mechanism can move relative to the base, and the first transmission rod and the transmission switching mechanism are locked; when the transmission assembly is in the second transmission state, the transmission switching mechanism and the base are locked, the first transmission rod and the transmission switching mechanism are unlocked, and the first transmission rod can slide relative to the transmission switching mechanism.

[0015] Optionally, the transmission assembly includes: a transmission part connected to the drive part; a first transmission rod connected to the transmission part and connected to the guide assembly via the transmission switching mechanism; and a second transmission rod connected to the transmission part and the transmission switching mechanism, wherein the axial direction of the second transmission rod is parallel to the axial direction of the first transmission rod and parallel to the linear motion direction of the transmission assembly; wherein, when the transmission assembly is in the first transmission state, the transmission switching mechanism can move relative to the base, and the second transmission rod and the transmission switching mechanism are locked; when the transmission assembly is in the second transmission state, the transmission switching mechanism and the base are locked, the second transmission rod and the transmission switching mechanism are unlocked, and the second transmission rod can slide relative to the transmission switching mechanism.

[0016] Optionally, the transmission switching mechanism includes: a first slider connected to the base; a first locking member that locks the second transmission rod to the first slider when the transmission assembly is in the first transmission state, and releases the lock between the second transmission rod and the first slider when the transmission assembly is in the second transmission state; and a second locking member that releases the lock between the first slider and the base when the transmission assembly is in the first transmission state, and locks the first slider to the base when the transmission assembly is in the second transmission state.

[0017] Optionally, the flexible electrode implantation device further includes a connector for connecting the first slider to the base. The axial direction of the connector is parallel to the direction of linear movement of the transmission assembly. When the transmission assembly is in the first transmission state, the first slider moves toward the implantation object along the axial direction of the connector.

[0018] Optionally, the flexible electrode implantation device further includes a clamping portion disposed on the first slider, the clamping portion being used to clamp the sleeve in the sleeve assembly to connect the sleeve assembly to the first slider.

[0019] Optionally, the clamping part includes multiple clamping segments and a locking part, the multiple clamping segments forming a clamping space, and the locking part being used to tighten the multiple clamping segments to clamp the sleeve located in the clamping space.

[0020] Optionally, the transmission unit includes: a lead screw mounted on the base, the axial direction of the lead screw being parallel to the linear motion direction of the transmission unit; a second slider sleeved on the lead screw, the second slider being connected to the first transmission rod and the second transmission rod; a third slider fixedly connected to the second slider; and a guide rail fixedly connected to the base, the extension direction of the guide rail being parallel to the axial direction of the lead screw and adapted to the third slider for guiding the motion direction of the third slider.

[0021] Optionally, the drive unit includes a drive knob or a drive motor for driving the lead screw to rotate.

[0022] Optionally, the flexible electrode is integrated into the flexible electrode assembly, and the implantation device further includes: a slide rod connected to the base; and a second mounting base slidably connected to the slide rod. The second mounting base is used to mount an electrode plate, which is connected to the flexible electrode assembly and used to receive signals collected by the flexible electrode assembly.

[0023] Optionally, the implantation depth of the flexible electrode implantation device is not less than 60 mm.

[0024] The present invention also provides a flexible electrode implantation system, including any of the above-described implantation heads and any of the above-described flexible electrode implantation devices.

[0025] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects: The implantation head includes an implantation needle and a guide assembly. A guide tube within the guide assembly is fitted over the implantation needle, with the tip of the guide tube closest to the implantation site. This allows the implantation needle to be housed within the guide tube during flexible electrode implantation, without protruding from the tip, facilitating puncture of the implantation site with the tip. After puncturing the implantation site, the implantation needle moves relative to the guide tube, continuing the flexible electrode implantation. Thus, the implantation needle itself does not need to puncture the implantation site, ensuring its straightness and guaranteeing the straightness of subsequent flexible electrode implantation operations. Furthermore, guided by the guide tube, the implantation needle can be implanted more easily and smoothly, improving the stability of needle movement during implantation and preventing needle vibration.

[0026] Furthermore, by improving the straightness and motion stability of the implantation needle, the deviation between the actual implantation point and the preset implantation point of the flexible electrode can be reduced, thereby improving the accuracy and precision of flexible electrode implantation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an implant head in an embodiment of the present invention; Figure 2 yes Figure 1A cross-sectional view along the AA direction; Figure 3 This is a structural diagram of the implant head in one state; Figure 4 This is a schematic diagram of the implant head in another state; Figure 5 This is a schematic diagram of the structure of a sliding part in one embodiment of the present invention from one viewpoint; Figure 6 This is a schematic diagram of the structure of a sliding part in an embodiment of the present invention from another perspective; Figure 7 This is a schematic diagram of the structure of an installation part in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a flexible electrode implantation device according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of a flexible electrode implantation system according to an embodiment of the present invention from one perspective; Figure 10 yes Figure 9 A cross-sectional view along the BB direction; Figure 11 This is a schematic diagram of the structure of a flexible electrode implantation system according to an embodiment of the present invention from another perspective; Figure 12 This is a schematic diagram showing the assembled flexible electrode implantation system; Figure 13 yes Figure 12 A bottom view; Figure 14 yes Figure 13 A sectional view along the CC direction; Explanation of reference numerals in the attached figures: 1-Implant head; 11-Implant needle; 111-Partial surface; 12-Guiding assembly; 121-Guide tube; 1211-Tip; 1212-Incision; 1213-Bevel; 1214-Hollow structure; 122-Sleeve assembly; 1221-Sleeve; 1222-Mounting part; 12221-First end of mounting part; 12222-Second end of mounting part; 12223-Shaft hole; 1223-Accommodating cavity; 123-Sliding part; 1231-First end of sliding part; 1232-Second end of sliding part; 1233-Implant needle mounting hole; 1234-Accommodating groove; 1235-End face; 13-First mounting seat; 131-Mounting groove; 2-Flexible electrode implantation device; 21-Drive mechanism; 211-Drive part ; 212-Transmission assembly; 2121-Transmission part; 21211-Lead screw; 21212-Second slider; 21213-Third slider; 21214-Guide rail; 21215-Lead screw seat; 2122-First transmission rod; 2123-Second transmission rod; 213-Base; 2131-First wall; 2132-Second wall; 2133-Third wall; 214-Limiting part; 22-Transmission switching mechanism; 221-First slider; 222-First locking element; 223-Second locking element; 23-Slide rod; 24-Second mounting base; 26-Scale; 27-Connector; 28-Clamping part; 281-Clamping segment; 282-Locking part; 31-Electrode plate; 32-Flexible electrode sheet; 100-Flexible electrode implantation system. Detailed Implementation

[0028] As mentioned above, to minimize damage to the brain tissue of the implanted subject and ensure minimal deviation between the actual and pre-set implantation sites, high straightness is required during the implantation process. When the flexible electrode is implanted in the deep brain region, the implantation depth is typically greater than 3 cm, which places even higher demands on the movement range, stability, and straightness of the implantation device. Currently available implantation devices cannot meet these requirements for movement range, stability, and straightness.

[0029] To address the aforementioned issues, the implantation head includes an implantation needle and a guiding assembly. A guide tube within the guiding assembly is fitted over the implantation needle, with the tip of the guide tube closest to the implantation target. This allows the implantation needle to be initially positioned within the guide tube, without protruding from the tip, facilitating puncture of the implantation target with the tip. After puncturing the target, the implantation needle moves relative to the guide tube, continuing the implantation of the flexible electrode. Thus, the implantation needle itself does not need to puncture the target, ensuring its straightness and guaranteeing the straightness of subsequent flexible electrode implantation operations. Furthermore, guided by the guide tube, the implantation needle can more easily and smoothly implant the flexible electrode, improving the stability of the needle's movement during implantation and preventing needle vibration.

[0030] Furthermore, by improving the straightness and motion stability of the implantation needle, the deviation between the actual implantation point and the preset implantation point of the flexible electrode can be reduced, thereby improving the accuracy and precision of flexible electrode implantation.

[0031] To make the above-mentioned objectives, features and beneficial effects of the embodiments of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] This invention provides an implant head that can be used for flexible electrode implantation. For example, it can be used for brain electrode implantation.

[0033] Figure 1 This is a schematic diagram of the structure of an implant head in an embodiment of the present invention; Figure 2 yes Figure 1 A cross-sectional view along the AA direction; Figure 3 This is a structural diagram of the implant head in one state; Figure 4 This is a structural diagram of the implant head in another state. Below, we will combine... Figures 1 to 4 The specific structure of the implant head is explained.

[0034] In a specific implementation, the implant head 1 includes an implant needle 11 and a guiding component 12. The implant needle 11 is used to form a physical connection with a flexible electrode. The flexible electrode is not shown in the figure. The guiding component 12 is used to guide the movement of the implant needle 11. The guiding component 12 includes a guide tube 121 sleeved on the implant needle 11. The end of the guide tube 121 is a tip 1211, and the end of the guide tube 121 points to the end close to the implanted object.

[0035] In some embodiments, the physical connection may include bonding, sleeve connection, etc. For example, adhesive (such as hydrosol) can be used to bond the flexible electrode to the implantation needle 11. After the flexible electrode is implanted, the hydrosol dissolves upon contact with tissue fluid, thereby releasing the connection between the implantation needle 11 and the flexible electrode, allowing the implantation needle 11 to be withdrawn. Alternatively, one end of the flexible electrode may be provided with an electrode ring or electrode wire hole, which is sleeved onto the implantation needle 11. Furthermore, various methods such as bonding and sleeve connection can be used in combination to achieve the physical connection between the flexible electrode and the implantation needle 11, thereby improving the reliability of the connection between the flexible electrode and the implantation needle 11.

[0036] like Figure 4 As shown, the implantation needle 11 can be configured to be housed within the guide tube 121, in which case the implantation needle 11 does not protrude from the tip 1211 of the guide tube 121. Figure 3 As shown, with the implantation of the flexible electrode, the implantation needle 11 can move relative to the guide tube 121 and extend out of the guide tube 121 to continue the implantation of the flexible electrode.

[0037] In a typical application scenario, taking the implantation of a flexible electrode into the skull as an example, the actual implantation operation may require puncturing the meninges. The dura mater, the first dense connective tissue membrane on the inner side of the skull, is highly resilient. Using the implantation head 1 provided by this invention, during the implantation of the flexible electrode, the implantation needle 11 is housed within the guide tube 121 and does not protrude from its tip 1211. The tip 1211 of the guide tube 121 punctures the meninges, protecting the implantation needle 11 from bending or deforming upon puncturing the meninges. After puncturing the meninges, the implantation needle 11 moves relative to the guide tube 121, driving the flexible electrode to continue implantation. The implantation needle 11 itself does not need to puncture the meninges, ensuring its straightness and guaranteeing the straightness of subsequent implantation operations. Furthermore, guided by the guide tube 121, the implantation needle 11 can easily and smoothly implant the flexible electrode into the brain tissue beneath the meninges, further improving the stability and straightness of the implantation.

[0038] It should be noted that the implant head 1 is not limited to brain implantation, but can also be used for implantation in other tissues in other scenarios, which will not be listed here.

[0039] As described above, the implantation head 1 includes an implantation needle 11 and a guiding component 12. A guide tube 121 in the guiding component 12 is fitted onto the implantation needle 11, with the tip 1211 near the implantation target. Thus, during the implantation of the flexible electrode, the implantation needle 11 can be initially positioned within the guide tube 121 without protruding from the tip 1211, facilitating the puncture of the implantation target by the tip 1211. After puncturing the implantation target, the implantation needle 11 moves relative to the guide tube 121 to continue the implantation of the flexible electrode. Therefore, the implantation needle 11 itself does not need to puncture the implantation target, ensuring the straightness of the implantation needle 11 and guaranteeing the straightness of subsequent flexible electrode implantation operations. Furthermore, guided by the guide tube 121, the implantation needle 11 can more easily and smoothly implant the flexible electrode, improving the movement stability of the implantation needle 11 and preventing it from vibrating. By improving the straightness and motion stability of the implantation needle 11, the deviation between the actual implantation point and the preset implantation point of the flexible electrode can be reduced, thereby improving the accuracy and precision of the implantation point of the flexible electrode.

[0040] In some embodiments, the end of the guide tube 121 near the tip 1211 has a cut 1212, which exposes a portion of the surface 111 of the implantation needle 11. The implantation needle 11 can be physically connected to the flexible electrode through the portion of the surface 111. Thus, during the implantation of the flexible electrode, the flexible electrode is kept exposed outside the guide tube 121, protecting it and preventing damage from the guide tube 121.

[0041] The extension direction of the incision 1212 can be parallel to the axial direction of the guide tube 121. In other words, the guide tube 121 can be cut along its axial direction to form the incision 1212. This ensures that the guide tube 121 has the function of guiding the implantation needle 11, while also ensuring that a portion of the surface 111 of the implantation needle 11 is exposed through the incision 1212, thus ensuring the physical connection of the flexible electrode.

[0042] In some embodiments, the tip 1211 includes a bevel 1213, the bevel angle of which ranges from 20 degrees to 50 degrees.

[0043] The guide tube 121 has a hollow structure 1214. The extension direction of the hollow structure 1214 is the same as the axial direction of the guide tube 121, which is used to define the movement direction of the implantation needle 11. The implantation needle 11 is located inside the hollow structure 1214 and can move along the hollow structure 1214.

[0044] The inclined surface 1213 can be symmetrical with respect to the axial cross-section of the guide tube 121. Thus, the inclined surface 1213 can include two sub-inclined surfaces symmetrical with respect to the axial cross-section of the guide tube 121, and the inclined surface 1213 is approximately C-shaped. In this way, an extremely fine tip 1211 can be formed at the end of the guide tube 121, which helps the guide tube 121 to easily pierce the implantation object (such as the meninges) so as to better maintain the straightness of the implantation operation.

[0045] Figure 5 This is a schematic diagram of the structure of a sliding part in one embodiment of the present invention from one viewpoint; Figure 6 This is a schematic diagram of the structure of a sliding part in an embodiment of the present invention from another perspective; Figure 8 This is a schematic diagram of the structure of a flexible electrode implantation device according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of a flexible electrode implantation system according to an embodiment of the present invention, viewed from one perspective. Combined with... Figures 1 to 6 , Figure 8 and Figure 9 The guiding assembly 12 further includes a sleeve assembly 122 and a sliding portion 123. One end of the sleeve assembly 122 is connected to the guide tube 121, and the sleeve assembly 122 has a receiving cavity 1223. One end of the sliding portion 123 is connected to the implantation needle 11, and the other end of the sliding portion 123 is used to connect to the driving mechanism 21. The sliding portion 123 moves within the receiving cavity 1223 under the drive of the driving mechanism 21 to drive the implantation needle 11 to move.

[0046] The axial direction of the sleeve assembly 122, the extension direction of the accommodating cavity 1223, and the axial direction of the guide tube 121 are parallel.

[0047] By guiding the movement direction of the sliding part 123 through the sleeve assembly 122, the straightness of the implantation needle 11 during the implantation operation can be ensured, which helps to control the deviation between the actual implantation point and the preset implantation point, so as to minimize or even eliminate the deviation between the actual implantation point and the preset implantation point.

[0048] In some embodiments, the sliding portion 123 is adapted to the receiving cavity 1223, and both the sliding portion 123 and the receiving cavity 1223 are cylindrical. The outer diameter of the sliding portion 123 is smaller than the inner diameter of the receiving cavity 1223, so that the sliding portion 123 can move smoothly within the receiving cavity 1223.

[0049] In a specific implementation, along the direction of movement of the sliding portion 123 within the accommodating cavity 1223, the sliding portion 123 has a first end 1231 and a second end 1232 disposed opposite to each other. The first end 1231 of the sliding portion 123 is close to the implantation needle 11.

[0050] The first end 1231 of the sliding part 123 is provided with an implantation needle mounting hole 1233 for connecting the implantation needle 11. The implantation needle 11 is inserted into the implantation needle mounting hole 1233 to achieve the connection between the implantation needle 11 and the sliding part 123. The implantation needle 11 and the implantation needle mounting hole 1233 can be connected by an interference fit to ensure a reliable connection between the implantation needle 11 and the sliding part 123. It is understood that the implantation needle 11 and the implantation needle mounting hole 1233 can be fixedly connected in other ways, which will not be listed here.

[0051] When using Figure 8 and Figure 9 When the flexible electrode implantation device shown implants the flexible electrode, the second end 1232 of the sliding part 123 is provided with a receiving groove 1234 for connecting the driving mechanism 21.

[0052] In some embodiments, the first end 1231 of the sliding portion 123 has an end face 1235. An implantation needle mounting hole 1233 may be provided on the end face 1235. Simultaneously, the end face 1235 may serve as the opposite side bottom of the receiving groove 1234. The receiving groove 1234 opens toward the drive mechanism 21.

[0053] Figure 7 This is a schematic diagram of the structure of a mounting part according to an embodiment of the present invention. (In conjunction with...) Figures 1 to 7 In a specific implementation, the sleeve assembly 122 includes a sleeve 1221 and a mounting portion 1222. The accommodating cavity 1223 is disposed within the sleeve 1221. The mounting portion 1222 is connected to the guide tube 121 and the sleeve 1221, and is used to connect the guide tube 121 to the sleeve 1221.

[0054] In some embodiments, the mounting portion 1222 includes a first end 12221 and a second end 12222. The first end 12221 of the mounting portion 1222 is close to the implanted object, and the second end 12222 of the mounting portion 1222 is close to the sleeve 1221. The second end 12222 of the mounting portion 1222 is located within the sleeve 1221. For example, the second end 12222 of the mounting portion 1222 is located within the sleeve 1221 and is interference-fitted with the sleeve 1221.

[0055] In some non-limiting embodiments, the outer diameter of the first end 12221 of the mounting portion 1222 is the same as the outer diameter of the sleeve 1221 to ensure that the overall diameter of the sleeve assembly 122 is consistent. It should be noted that the outer diameter of the first end 12221 of the mounting portion 1222 may also be smaller than the outer diameter of the sleeve 1221 and larger than the inner diameter of the sleeve 1221.

[0056] In a specific implementation, the flexible electrode is integrated into a flexible electrode assembly, which further includes a flexible electrode sheet 32 ​​connected to the flexible electrode. The implantation head 1 also includes a first mounting base 13 connected to the sleeve 1221, the first mounting base 13 being used to mount the flexible electrode sheet.

[0057] In some embodiments, the first mounting base 13 can move along the axial direction of the sleeve 1221 or rotate around the circumference of the sleeve 1221. Since the positional requirements of the flexible electrode sheet 32 ​​are different during and after the flexible electrode implantation stage, the position of the flexible electrode sheet 32 ​​can be conveniently adjusted by adjusting the relative positions of the first mounting base 13 and the sleeve 1221 to meet the positional requirements of the flexible electrode sheet 32 ​​at different stages.

[0058] In some non-limiting embodiments, the first mounting base 13 is provided with a mounting hole, the axis of which is parallel to the axis of the sleeve 1221. The first mounting base 13 is sleeved onto the sleeve 1221 through the mounting hole.

[0059] For example, the inner diameter of the mounting hole can be smaller than the outer diameter of the sleeve 1221. In this way, the first mounting seat 13 can be interference-fitted into the sleeve 1221. When an external force rotates the first mounting seat 13, the first mounting seat 13 can rotate around the circumference of the sleeve 1221. When an external force pushes the first mounting seat 13 along the axial direction of the sleeve 1221, the first mounting seat 13 can move along the axial direction of the sleeve 1221.

[0060] For example, the inner diameter of the mounting hole can be larger than the outer diameter of the sleeve 1221. The first mounting base 13 is provided with a locking hole. After the first mounting base 13 is fitted onto the sleeve 1221, a locking screw is passed through the locking hole to hold the sleeve 1221 in place, thus locking the first mounting base 13 and the sleeve 1221 together. When the first mounting base 13 and the sleeve 1221 are locked, their positions are relatively fixed, ensuring the relative stability of the flexible electrode and the flexible electrode sheet 32 ​​during the flexible electrode implantation operation. When it is necessary to adjust the relative position of the first mounting base 13 and the sleeve 1221, the locking screw can be removed from the locking hole to release the lock between the first mounting base 13 and the sleeve 1221. At this time, the first mounting base 13 can be rotated or moved along the direction of the sleeve 1221. After the first mounting base 13 is moved to the appropriate position, the locking screw is used to lock the first mounting base 13 and the sleeve 1221 together.

[0061] In some non-limiting embodiments, the first mounting base 13 is provided with a mounting groove 131. The flexible electrode sheet 32 ​​is mounted in the mounting groove 131.

[0062] The implantation needle 11 in the above embodiments can be a tungsten needle or made of a material whose rigidity or strength meets the set strength requirements. The end of the implantation needle 11 closest to the implantation object is the needle tip. The structure of the implantation needle 11 shown in the figure is for illustrative purposes only and does not limit the specific structure of the implantation needle 11.

[0063] This invention also provides an implantation device for a flexible electrode, hereinafter referred to as the implantation device, which is used to drive any of the above-mentioned implantation heads 1 to implant the flexible electrode. Specifically, the implantation head 1 can be assembled into the implantation device, which can drive the implantation head 1 to move as a whole or drive the implantation needle 11 to move. The following is a detailed description in conjunction with the accompanying drawings.

[0064] Figure 10 yes Figure 9 A cross-sectional view along the BB direction; Figure 11 This is a schematic diagram of the structure of a flexible electrode implantation system according to an embodiment of the present invention from another perspective; Figure 12 This is a schematic diagram showing the assembled flexible electrode implantation system; Figure 13 yes Figure 12 A bottom view; Figure 14 yes Figure 13 A sectional view along the CC direction.

[0065] Combination Figures 1 to 14The flexible electrode implantation device 2 includes a drive mechanism 21 and a transmission switching mechanism 22. The drive mechanism 21 includes a drive unit 211 and a transmission assembly 212, the drive unit 211 driving the transmission assembly 212 in linear motion. The transmission switching mechanism 22 is connected to the transmission assembly 212 and a guide assembly 12 for connecting the implantation head 1.

[0066] When the transmission switching mechanism 22 and the transmission component 212 are locked, the transmission component 212 is in a first transmission state, and the transmission component 212 drives the implantation needle 11 and the guide tube 121 to move as a whole toward the implantation target. When the transmission switching mechanism 22 and the transmission component 212 are unlocked, the transmission component 212 is in a second transmission state, and the transmission component 212 drives the implantation needle 11 to move relative to the guide tube 121 until the implantation stroke reaches the set stroke.

[0067] As can be seen from the above, the transmission switching mechanism 22 in the implantation device 2 can be used to adjust the transmission state of the transmission component 212, so that the transmission component 212 can switch between the first transmission state and the second transmission state, enabling the implantation device 2 to provide two propulsion modes. In the first transmission state, the transmission component 212 drives the implantation needle 11 and the guide tube 121 to move as a whole toward the implantation object, which helps to complete the operation of piercing the implantation object through the tip 1211 of the guide tube 121. Then, the transmission switching mechanism 22 switches the transmission component 212 to the second transmission state, and the transmission component 212 drives the implantation needle 11 to move relative to the guide tube 121, and the implantation needle 11 drives the flexible electrode to continue implantation. In this way, the implantation needle 11 itself does not need to pierce the implantation object, which can ensure the straightness of the implantation needle 11, ensuring the straightness of the implantation needle 11 during subsequent implantation operations of the flexible electrode. Moreover, under the guidance of the guide tube 121, the implantation needle 11 can easily and smoothly implant the flexible electrode and has good implantation stability.

[0068] In a specific implementation, the drive mechanism 21 also includes a base 213, which is used to mount the transmission assembly 212 and the transmission switching mechanism 22.

[0069] In specific implementations, the transmission assembly 212 can have various structures, as illustrated below.

[0070] In some embodiments, the transmission assembly 212 includes a transmission part 2121 and a first transmission rod 2122. The transmission part 2121 is connected to the drive part 211. The first transmission rod 2122 is connected to the transmission part 2121 and is connected to the guide assembly 12 via the transmission switching mechanism 22. At this time, through the cooperation of the first transmission rod 2122 and the transmission switching mechanism 22, the connection state between the transmission switching mechanism 22 and the first transmission rod 2122, and the connection state between the transmission switching mechanism 22 and the base 213 are switched, thereby realizing the switching of the transmission assembly 212 between a first transmission state and a second transmission state.

[0071] Specifically, when the transmission assembly 212 is in the first transmission state, the transmission switching mechanism 22 can move relative to the base 213, and the first transmission rod 2122 and the transmission switching mechanism 22 are locked together. Since the guide assembly 12 of the implant head 1 is connected to the transmission switching mechanism 22, and the first transmission rod 2122 and the transmission switching mechanism 22 are locked together, the first transmission rod 2122 pushes the transmission switching mechanism 22 and the implant head 1 as a whole to move relative to the base 213. At this time, the implantation needle 11 can be housed in the guide tube 121, and the tip 1211 of the guide tube 121 punctures the implantation target, such as puncturing the meninges.

[0072] When the transmission assembly 212 is in the second transmission state, the transmission switching mechanism 22 and the base 213 are locked, and the first transmission rod 2122 is unlocked from the transmission switching mechanism 22, allowing the first transmission rod 2122 to slide relative to the transmission switching mechanism 22. After the first transmission rod 2122 is unlocked from the transmission switching mechanism 22, it moves with the transmission part 2121. Since the guide assembly 12 of the implantation head 1 is connected to the transmission switching mechanism 22, and the transmission switching mechanism 22 and the base 213 are locked, the guide tube 121 and the base 213 are also locked. The first transmission rod 2122 will push the implantation needle 11 to move relative to the guide tube 121, and the implantation needle 11 will drive the flexible electrode to be implanted.

[0073] In other embodiments, the transmission assembly 212 includes a transmission section 2121, a first transmission rod 2122, and a second transmission rod 2123. The transmission section 2121 is connected to the drive section 211. The first transmission rod 2122 is connected to the transmission section 2121 and is connected to the guide assembly 12 via the transmission switching mechanism 22. The second transmission rod 2123 is connected to the transmission section 2121 and the transmission switching mechanism 22, and the axial direction of the second transmission rod 2123 is parallel to the axial direction of the first transmission rod 2122 and parallel to the linear motion direction of the transmission assembly 212.

[0074] When the transmission assembly 212 is in the first transmission state, the transmission switching mechanism 22 can move relative to the base 213, and the second transmission rod 2123 and the transmission switching mechanism 22 are locked. Since the guide assembly 12 of the implant head 1 is connected to the transmission switching mechanism 22, and the second transmission rod 2123 is connected to the transmission part 2121, it can move with the transmission part 2121. When the second transmission rod 2123 and the transmission switching mechanism 22 are locked, the second transmission rod 2123 will push the transmission switching mechanism 22 to move relative to the base 213. At this time, there is no relative movement between the first transmission rod 2122 and the guide assembly 12, and no relative movement between the first transmission rod 2122 and the implantation needle 11. The second transmission rod 2123, the transmission switching mechanism 22, and the implant head 1 are linked, and the implant head 1 as a whole moves relative to the base 213. At this time, the implantation needle 11 can be housed in the guide tube 121, and the tip 1211 of the guide tube 121 punctures the implantation target, such as puncturing the meninges.

[0075] When the transmission assembly 212 is in the second transmission state, the transmission switching mechanism 22 and the base 213 are locked, and the second transmission rod 2123 is unlocked from the transmission switching mechanism 22 and can slide relative to the transmission switching mechanism 22. After the second transmission rod 2123 is unlocked from the transmission switching mechanism 22, both the first transmission rod 2122 and the second transmission rod 2123 move with the transmission part 2121. Since the guide assembly 12 of the implantation head 1 is connected to the transmission switching mechanism 22, and the transmission switching mechanism 22 and the base 213 are locked, the guide tube 121 and the base 213 are also locked. As a result, the first transmission rod 2122 pushes the implantation needle 11 to move relative to the guide tube 121, and the implantation needle 11 drives the flexible electrode to be implanted.

[0076] In some embodiments, the first transmission rod 2122 and the second transmission rod 2123 may be cylindrical or other suitable shapes. The diameters of the first transmission rod 2122 and the second transmission rod 2123 may be the same or different. While ensuring strength and rigidity requirements, the diameters can be controlled to be as small as possible to reduce the weight of the implantation device 2, making it as compact as possible to avoid obstructing the operator's view. In a specific implementation, the first transmission rod 2122 is connected to the sliding portion 123 in the guide assembly 12. Specifically, the first transmission rod 2122 is interference-fitted with the receiving groove 1234 of the sliding portion 123. The first transmission rod 2122 pushes the sliding portion 123 to move within the receiving cavity 1223, thereby causing the sliding portion 123 to drive the implantation needle 11 to move.

[0077] In a specific implementation, the transmission switching mechanism 22 includes: a first slider 221, a first locking member 222, and a second locking member 223. The first slider 221 is connected to the base 213.

[0078] When the transmission assembly 212 is in the first transmission state, the first locking member 222 locks the second transmission rod 2123 and the first slider 221. When the transmission assembly 212 is in the second transmission state, the locking between the second transmission rod 2123 and the first slider 221 is released.

[0079] When the transmission assembly 212 is in the first transmission state, the second locking member 223 releases the lock between the first slider 221 and the base 213, and when the transmission assembly 212 is in the second transmission state, it locks the first slider 221 and the base 213.

[0080] The flexible electrode implantation device 2 further includes a connector 27 for connecting the first slider 221 to the base 213. The axial direction of the connector 27 is parallel to the direction of linear movement of the transmission assembly 212. When the transmission assembly 212 is in the first transmission state, the first slider 221 moves toward the implantation object along the axial direction of the connector 27.

[0081] The number of connectors 27 can be multiple, such as two, three, or more. Connector 27 can be a threaded screw, with the threaded portion used to connect to the base 213. The first slider 221 can move along the axial direction of the threaded screw.

[0082] The first slider 221 is provided with a first locking hole that is adapted to the first locking member 222. The first locking member 222 passes through the first locking hole and abuts against the second transmission rod 2123, thereby locking the second transmission rod 2123 with the first slider 221.

[0083] The first slider 221 is provided with a second locking hole that is adapted to the second locking member 223. The second locking member 223 passes through the second locking hole to hold the connecting member 27, thereby locking the first slider 221 to the base 213.

[0084] The first locking element 222 and the second locking element 223 can be locking screws.

[0085] In some embodiments, the implantation device 2 may further include a spring plunger sleeved on the connector 27. The spring plunger helps to tighten the second locking member 223, thereby adjusting the tightness of the first slider 221 when it moves along the connector 27.

[0086] In some embodiments, the implantation device 2 further includes a clamping portion 28 disposed on the first slider 221. The clamping portion 28 is used to clamp the sleeve 1221 in the sleeve assembly to connect the sleeve assembly to the first slider 221.

[0087] In some non-limiting embodiments, the clamping portion 28 includes a plurality of clamping segments 281 and a locking portion 282. The plurality of clamping segments 281 form a clamping space, and the locking portion 282 is used to tighten the plurality of clamping segments 281 to clamp the sleeve 1221 located in the clamping space. The number of clamping segments 281 can be two, three, or more.

[0088] It should be noted that the clamping part 28 may also have a threaded connection structure, a snap-fit ​​structure or other suitable structure, which will not be listed here.

[0089] In a specific implementation, the transmission unit 2121 includes: a lead screw 21211, a second slider 21212, a third slider 21213, and a guide rail 21214.

[0090] The lead screw 21211 is mounted on the base 213, and the axial direction of the lead screw 21211 is parallel to the linear motion direction of the transmission part 2121.

[0091] The second slider 21212 is sleeved on the lead screw 21211, and the second slider 21212 is connected to the first transmission rod 2122 and the second transmission rod 2123.

[0092] The third slider 21213 is fixedly connected to the second slider 21212. A guide rail 21214 is fixedly connected to the base 213. The extension direction of the guide rail 21214 is parallel to the axial direction of the lead screw 21211. The guide rail 21214 is adapted to the third slider 21213 and is used to guide the movement direction of the third slider 21213. Through the cooperation of the guide rail 21214 and the third slider 21213, and the connection between the second slider 21212 and the third slider 21213, the second slider 21212 can move along the direction guided by the guide rail 21214, ensuring the straightness of the movement of the second slider 21212, and thus ensuring the straightness of the implantation direction during implantation.

[0093] In some embodiments, a connecting protrusion may be provided on the second slider 21212, and the first transmission rod 2122 and the second transmission rod 2123 are connected to the second slider 21212 through the connecting protrusion. In this way, the volume and weight of the second slider 21212 can be minimized, which helps to achieve a compact design of the implantation device 2.

[0094] Furthermore, the transmission unit 2121 may also include a lead screw seat 21215. The lead screw 21211 is connected to the base 213 via the lead screw seat 21215.

[0095] In some embodiments, the base 213 may include a first wall 2131, a second wall 2132, and a third wall 2133. The first wall 2131 extends in a direction parallel to the axial direction of the first transmission rod 2122. The second wall 2132 and the third wall 2133 are parallel to and opposite to each other, located at opposite ends of the first wall 2131 along its extension direction.

[0096] The guide rail 21214 can be installed on the first wall 2131. The transmission switching mechanism 22 can be installed on the second wall 2132. The drive unit 211 can be installed on the third wall 2133.

[0097] It should be noted that the base 213 can also be other suitable structural styles, which are not limited here.

[0098] Furthermore, a limiting part 214 may be provided on the base 213. The limiting part 214 is used to limit the movement position of the second slider 21212, and can also help determine the initial position of the second slider 21212.

[0099] In a specific implementation, the drive unit 211 includes a drive knob or a drive motor for driving the lead screw 21211 to rotate. The lead screw 21211 and the second slider 21212 can be threadedly connected. When the drive knob is rotated, the lead screw 21211 can be driven to rotate around its axial direction. The second slider 21212 is sleeved on the lead screw 21211 and threadedly connected. The second slider 21212 is fixedly connected to the third slider 21213, so that the rotation of the lead screw 21211 can be converted into the linear motion of the second slider 21212. By using a single drive unit 211, two different pushing modes of the implantation device 2 (corresponding to two transmission states) can be realized, which greatly simplifies the overall structure and reduces the complexity of use, helps to achieve a compact structure, and avoids obstructing the operator's vision during implantation.

[0100] In some embodiments, a scale 26 may be provided on the base 213, and a scale mark adapted to the scale 26 may be provided on the second slider 21212. The scale mark cooperates with the scale 26 to accurately display the moving distance of the second slider 21212. The accuracy of the scale 26 can be configured according to actual needs. For example, it can be accurate to 1 mm or 0.5 mm.

[0101] In some non-limiting embodiments, the implantation travel of the implantation device 2 is not less than 10 mm.

[0102] Furthermore, the implantation stroke of the implantation device 2 is not less than 60 mm.

[0103] In a specific implementation, the flexible electrode is integrated into the flexible electrode assembly. The implantation device 2 further includes a slide rod 23 and a second mounting base 24. The slide rod 23 is connected to the base 213. The second mounting base 24 is slidably connected to the slide rod 23 and is used to mount an electrode plate 31. The electrode plate 31 is connected to the flexible electrode and is used to receive signals collected by the flexible electrode. The signal can be an electroencephalogram (EEG) signal.

[0104] The axis of the slide rod 23 is parallel to the linear motion direction of the transmission assembly 212. During implantation, the second mounting base 24 can move along the slide rod 23. For example, the flexible electrode assembly also includes a flexible electrode sheet 32, which is connected to the electrode plate 31 and can drive the electrode plate 31, thereby driving the second mounting base 24 to move relative to the slide rod 23.

[0105] In some modified embodiments, the implantation device 2 may further include a second mounting base 24. The second mounting base 24 may be slidably connected to the first transmission rod 2122 or the second transmission rod 2123.

[0106] Combination Figures 1 to 14 The present invention also provides a flexible electrode implantation system 100, which includes any of the above-described implantation heads 1 and any of the above-described flexible electrode implantation devices 2.

[0107] The specific structure and working principle of the implant head 1 and the implantation device 2 for the flexible electrode can be found in the description in the above embodiments, and will not be repeated here.

[0108] To facilitate a better understanding and implementation of the embodiments of the present invention by those skilled in the art, the assembly of the flexible electrode implantation device 2 and the workflow during implantation are described below in conjunction with a typical application scenario. In this scenario, the implantation of a flexible electrode into the brain is used as an example.

[0109] The assembly process of the implant head 1 is as follows: Insert the guide tube 121 into the shaft hole 12223 of the mounting part 1222, and insert the second end 12222 of the mounting part 1222 into the sleeve 1221. Insert the implant needle 11 into the hollow structure 1214 of the guide tube 121, and after passing through the receiving cavity 1223 of the sleeve 1221, insert it into the implant needle mounting hole 1233 of the sliding part 123. Insert part of the sliding part 123 into the sleeve 1221, with a portion protruding, such as about 5 mm. Apply a ring of adhesive tape to the protruding part of the sliding part 123. The applied tape can provide a certain resistance when docking with the first transmission rod 2122 later, so as to facilitate the insertion of the first transmission rod 2122 into the receiving groove 1234. The first mounting base 13 is fitted onto the sleeve 1221. An elastic plunger is fitted onto the locking screw. The locking screw passes through the locking hole. The elastic plunger can adjust the tightness of the locking screw and the sleeve 1221, and thus adjust the tightness of the rotation and sliding of the first mounting base 13 on the sleeve 1221.

[0110] The flexible electrode sheet 32 ​​is mounted onto the first mounting base 13. For example, double-sided adhesive tape can be used to attach the flexible electrode sheet 32 ​​to the first mounting base 13.

[0111] The flexible electrode sheet 32 ​​has one or more extremely fine flexible electrode wires (not shown in the figure) at its end. The end of the flexible electrode wire has an electrode ring. The electrode ring is threaded onto the implantation needle 11, thus completing the assembly of the entire implantation head 1.

[0112] Release the first locking member 222, the second locking member 223, and the locking part 282. Push the first slider 221 to the initial position and lock the second locking member 223. Operate the knob to slide the second slider 21212 and the third slider 21213 to the starting scale, such as the zero scale.

[0113] Insert the sleeve 1221 into the clamping space formed by the clamping segments 281. After inserting it to the bottom, tighten the locking part 282. Then operate the drive knob to make the second slider 21212 and the third slider 21213 move along the implantation direction. As the second slider 21212 and the third slider 21213 move (for example, about 2mm), a certain damping force will be felt. At this time, the first drive rod 2122 just touches the receiving groove 1234. Since the exposed part of the sliding part 123 is covered with a ring of tape, the tape will prevent the sliding part 123 from entering the receiving cavity 1223. So if you continue to screw it in, the first drive rod 2122 will be inserted into the receiving groove 1234, thereby completing the docking of the first drive rod 2122 and the sliding part 123.

[0114] When the damping force is no longer felt when the drive knob is turned, it means that the first transmission rod 2122 and the sliding part 123 have been successfully connected, and the implantation of the flexible electrode can begin.

[0115] Secure the implantation device 2 to the positioning device or robotic arm, and adjust the relative position of the implantation head 1 to the brain surface using the height adjustment knob or position adjustment knob. For example, position the tip 1221 of the guide tube 121 of the implantation device 2 approximately 3 mm above the brain surface.

[0116] Tighten the first locking member 222, and then loosen the second locking member 223. Operate the drive knob. At this time, since the first locking member 222 locks and fixes the second transmission rod 2123 and the first slider 221 together, when the drive knob is turned in, the second transmission rod 2123 will move along with the first slider 221. The first slider 221 will then move along with the implantation needle 11 and the guide assembly 12 until the tip 1211 of the guide tube 121 in the guide assembly 12 punctures the brain surface, completing the membrane rupture.

[0117] After the membrane is broken, the first locking member 222 is released and the second locking member 223 is locked. At this time, the first slider 221 is locked to the base 213, and the second transmission rod 2123 is released from the lock with the first slider 221. Then, the drive knob is turned in. At this time, the first slider 221 will no longer move with the second transmission rod 2123, but only the first transmission rod 2122 moves against the sliding part 123. At this time, the implantation needle 11 will be implanted into the brain with the flexible electrode.

[0118] During the flexible electrode implantation process, the implantation depth can be read through the scale on the transmission base 213 and the drive knob. The reading accuracy can be, for example, 0.01mm (used in conjunction with the 100-division scale on the drive knob). The implantation is completed when the predetermined implantation depth is reached.

[0119] After implantation, operate the drive knob to retract the implantation needle 11. Once the implantation needle 11 is completely retracted, operate the positioning device or robotic arm to move the implantation device 2 away from the brain surface. The degree of distance depends on the distance between the installation and fixing position of the flexible electrode pad and the brain surface. Then, manually operate the first mounting base 13 up and down and rotate it to fix the electrode pad fixing plate. Finally, use light-curing adhesive to fix the electrode pad fixing plate and the first mounting base 13 together. The electrode pad fixing plate is used to support the flexible electrode pad 32.

[0120] This completes one flexible electrode implantation. To implant the next flexible electrode, simply repeat the above steps.

[0121] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An implant head, characterized in that, include: An implantation needle is used to form a physical connection with a flexible electrode; A guiding component is used to guide the movement of the implantation needle. The guiding component includes a guide tube sleeved on the implantation needle, the end of the guide tube being a pointed tip, the end of the guide tube pointing towards the implantation object. During the implantation of the flexible electrode, the implantation needle is first configured to be housed within the guide tube and not protrude from the pointed tip. The implantation needle and the guide tube as a whole move towards the implantation object, and the pointed tip pierces the implantation object. After the pointed tip pierces the implantation object, the implantation needle moves relative to the guide tube, and the implantation needle drives the flexible electrode to be implanted. The guide tube has a cut near the tip at its end, which exposes a portion of the surface of the implantation needle. The guide tube is cut along its axial direction to form the cut.

2. The implant head as described in claim 1, characterized in that, The tip includes a ramp with a slope angle ranging from 20 degrees to 50 degrees.

3. The implant head as described in claim 1, characterized in that, The boot component also includes: A sleeve assembly, one end of which is connected to the guide tube, the sleeve assembly having a receiving cavity; The sliding part has one end connected to the implantation needle and the other end connected to the drive mechanism. The sliding part moves within the accommodating cavity under the drive of the drive mechanism to move the implantation needle.

4. The implant head as described in claim 3, characterized in that, Along the direction of movement of the sliding part within the accommodating cavity, the sliding part has a first end and a second end disposed opposite to each other. The first end is provided with an implantation needle mounting hole for connecting the implantation needle, and the second end is provided with an accommodating groove for connecting the driving mechanism, wherein the first end is close to the implantation needle.

5. The implant head as described in claim 3, characterized in that, The sleeve assembly includes: A sleeve, wherein the accommodating cavity is disposed in the sleeve; The mounting part is connected to the guide tube and the sleeve, and is used to connect the guide tube to the sleeve.

6. The implant head as described in claim 5, characterized in that, The flexible electrode is integrated into the flexible electrode assembly, which further includes a flexible electrode sheet connected to the flexible electrode. The implantation head also includes a first mounting seat connected to the sleeve, the first mounting seat being used to mount the flexible electrode sheet.

7. An implantation device for a flexible electrode, characterized in that, The implantation device is used to drive the implantation head as described in any one of claims 1 to 6 to implant a flexible electrode, the implantation device for the flexible electrode comprising: A driving mechanism includes: a driving part and a transmission assembly, wherein the driving part is used to drive the transmission assembly to linear motion; A transmission switching mechanism connected to the transmission assembly, and a guide assembly for connecting the implant head; When the transmission switching mechanism and the transmission component are locked, the transmission component is in a first transmission state, and the transmission component drives the implantation needle and the guide tube to move toward the implantation object as a whole; when the transmission switching mechanism and the transmission component are unlocked, the transmission component is in a second transmission state, and the transmission component drives the implantation needle to move relative to the guide tube until the implantation stroke reaches the set stroke.

8. The implantation device for the flexible electrode as described in claim 7, characterized in that, The drive mechanism also includes a base for mounting the drive mechanism and the transmission switching mechanism.

9. The implantation device for the flexible electrode as described in claim 8, characterized in that, The transmission assembly includes: The transmission unit is connected to the drive unit; The first transmission rod is connected to the transmission unit and to the guide assembly via the transmission switching mechanism; When the transmission component is in the first transmission state, the transmission switching mechanism can move relative to the base, and the first transmission rod and the transmission switching mechanism are locked together; when the transmission component is in the second transmission state, the transmission switching mechanism and the base are locked together, the first transmission rod and the transmission switching mechanism are unlocked, and the first transmission rod can slide relative to the transmission switching mechanism.

10. The implantation device for the flexible electrode as described in claim 8, characterized in that, The transmission assembly includes: The transmission unit is connected to the drive unit; The first transmission rod is connected to the transmission unit and to the guide assembly via the transmission switching mechanism; The second transmission rod is connected to the transmission part and the transmission switching mechanism. The axial direction of the second transmission rod is parallel to the axial direction of the first transmission rod and parallel to the linear motion direction of the transmission assembly. When the transmission component is in the first transmission state, the transmission switching mechanism can move relative to the base, and the second transmission rod and the transmission switching mechanism are locked together; when the transmission component is in the second transmission state, the transmission switching mechanism and the base are locked together, the second transmission rod and the transmission switching mechanism are unlocked, and the second transmission rod can slide relative to the transmission switching mechanism.

11. The implantation device for the flexible electrode as described in claim 10, characterized in that, The transmission switching mechanism includes: The first slider is connected to the base; The first locking member locks the second transmission rod and the first slider when the transmission assembly is in the first transmission state, and releases the locking between the second transmission rod and the first slider when the transmission assembly is in the second transmission state. The second locking member releases the locking between the first slider and the base when the transmission assembly is in the first transmission state, and locks the first slider and the base when the transmission assembly is in the second transmission state.

12. The implantation device for the flexible electrode as described in claim 11, characterized in that, It also includes a connector for connecting the first slider to the base, the axis of the connector being parallel to the direction of linear motion of the transmission assembly, and when the transmission assembly is in the first transmission state, the first slider moves toward the implanted object along the axis of the connector.

13. The implantation device for the flexible electrode as described in claim 11, characterized in that, Also includes: The clamping part is disposed on the first slider, and the clamping part is used to clamp the sleeve in the sleeve assembly to connect the sleeve assembly to the first slider.

14. The implantation device for the flexible electrode as described in claim 13, characterized in that, The clamping part includes multiple clamping segments and a locking part. The multiple clamping segments form a clamping space, and the locking part is used to tighten the multiple clamping segments to clamp the sleeve located in the clamping space.

15. The implantation device for the flexible electrode as described in claim 10, characterized in that, The transmission unit includes: A lead screw is mounted on the base, and the axial direction of the lead screw is parallel to the linear motion direction of the transmission part; The second slider is sleeved on the lead screw, and the second slider is connected to the first transmission rod and the second transmission rod; The third slider is fixedly connected to the second slider; A guide rail is fixedly connected to the base. The extension direction of the guide rail is parallel to the axial direction of the lead screw and is adapted to the third slider to guide the movement direction of the third slider.

16. The implantation device for the flexible electrode as described in claim 15, characterized in that, The drive unit includes a drive knob or a drive motor for driving the lead screw to rotate.

17. The implantation device for the flexible electrode as described in claim 8, characterized in that, The flexible electrode is integrated into the flexible electrode assembly, and the implantation device further includes: The slide bar is connected to the base; The second mounting base is slidably connected to the slide rod. The second mounting base is used to mount the electrode plate, which is connected to the flexible electrode assembly and is used to receive the signals collected by the flexible electrode assembly.

18. The implantation device for the flexible electrode as described in claim 7, characterized in that, The implantation depth of the flexible electrode implantation device is not less than 60 mm.

19. A flexible electrode implantation system, characterized in that, An implantation device including the implant head as described in any one of claims 1 to 6 and the flexible electrode as described in any one of claims 7 to 18.

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