Electrode implantation device

Abstract

The electrode implanting device comprises: a plurality of implanting assemblies corresponding to a plurality of electrode wires one by one, each implanting assembly has opposite first and second ends in a first direction, and the first end is pre-connected to the front end of the corresponding electrode wire; a fixing assembly for fixing the implanting assembly and a signal transmission module, the implanting assembly is located in front of the signal transmission module in a second direction, and the second direction is perpendicular to the first direction; the electrode wire comprises a first section extending from the front end to the second end along the first direction, and a second section connecting the first section and the signal transmission module; the interval between the first fixing position of the implanting assembly on the fixing assembly and the second fixing position of the signal transmission module on the fixing assembly in the second direction is adjustable, so as to adjust the length of the second section according to the target moving amount of the implanting assembly in the first direction. Through the scheme, the overhanging part of the electrode wire can be in a natural straightening state, the electrode wires are prevented from winding with each other, and the electrode wire implanting efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of electrode implantation technology, and more particularly to an electrode implantation device. Background Technology

[0002] Due to the excellent mechanical compatibility of electrode wires, they are less likely to form scars or cause rejection reactions in brain tissue, effectively reducing the damage to brain tissue caused by electrode implantation surgery. In the field of brain-computer interfaces, implantation robots capable of rapidly implanting electrode wires into biological tissues (such as the brain) to obtain physiological electrical signals are currently being developed. This technology aims to rapidly and densely implant electrode wires into brain tissue within the time required for brain fenestration. The general method for implanting electrode wires into brain tissue involves implanting the electrode wires into the brain tissue using an implantation needle.

[0003] However, at present, when implanting multiple electrode wires into brain tissue, the implantation needle (currently mostly a tungsten needle) on the implantation robot's implantation head needs to first pass through the electrode loop at the front end of one electrode wire. After visually confirming successful loop penetration, the implantation needle is moved to drive the electrode wire and implant the first electrode wire into the brain tissue. Then, the implantation needle is moved back to the initial position, and the tungsten needle is moved again to pass through the electrode loop on the second electrode wire. After visually confirming successful loop penetration, the tungsten needle is used to implant the second electrode wire into the brain tissue. This process is repeated until the nth electrode wire is implanted.

[0004] Because current electrode wire implantation involves reusing the same needle, the same needle is used to insert each electrode wire before inserting the next. For each electrode wire, the needle must be threaded through the electrode loop during the procedure. Furthermore, because the electrode wires are very thin, the electrode loops are also very small, typically around 20 micrometers (µm) in diameter. Therefore, whether the loop is threaded automatically under image recognition or manually, it takes a considerable amount of time. The implantation of n electrode wires will take n times longer. This increased time during the brain tissue window opening significantly increases the risk of infection.

[0005] On the other hand, due to the uncertainty of the internal environment of the brain tissue where the electrode wires are implanted, the implantation needle may be damaged during the implantation process. For example, the brain tissue may cause the needle tip to bend. Therefore, it is difficult to implant all n electrode wires into the brain tissue with only one needle without replacing the needle. Thus, if the implantation needle is damaged during the implantation process, it is necessary to replace the needle, which will take an additional long time and further increase the risk of infection during the surgery. Summary of the Invention

[0006] The technical problem solved by this invention is how to improve the efficiency of electrode wire implantation.

[0007] To address the aforementioned technical problems, this invention provides an electrode implantation device. The electrode includes a signal transmission module and multiple electrode wires. The signal transmission module is located at the rear end of the electrode wires along their extension direction. The electrode implantation device includes: multiple implantation components, each corresponding to one of the multiple electrode wires, wherein each implantation component has a first end and a second end along a first direction, and the first end is pre-connected to the front end of the corresponding electrode wire along its extension direction; a fixing component for fixing the multiple implantation components and the signal transmission module, wherein the multiple implantation components are located in front of the signal transmission module along a second direction, wherein the second direction is perpendicular to the first direction; wherein the electrode wire includes a first segment extending from the front end along the first direction toward the second end, and a second segment connecting the first segment and the signal transmission module; the distance between the first fixed position of the implantation component on the fixing component and the second fixed position of the signal transmission module on the fixing component in the second direction is adjustable to adjust the length of the second segment according to the target movement of the implantation component in the first direction.

[0008] Optionally, the sum of the lengths of the second segment and the first segment is equal to the length of the electrode wire, wherein the length of the first segment is not less than the target implantation depth of the electrode.

[0009] Optionally, the fixing component includes: a first fixing part for fixing the signal transmission module; and a second fixing part, wherein the plurality of implanted components are detachably connected to the second fixing part, and the second fixing part is movably connected to the first fixing part and can move relative to the first fixing part in the second direction.

[0010] Optionally, the first fixing part includes: a body; and a first locking part, the first locking part being used to apply a force to the body to fix the signal transmission module between the body and the first locking part.

[0011] Optionally, the body is provided with a first track, the extension direction of the first track being parallel to the second direction, and the first locking part being movable along the first track to adjust the relative position of the second fixed position on the body.

[0012] Optionally, the first locking portion includes: a base connected to the body, the base being located above the body along the first direction; and a first elastic member extending from the base toward the body in a bent manner, the bent section of the first elastic member abutting against the body and exhibiting elastic deformation.

[0013] Optionally, the first locking part includes: a gantry structure disposed on the body, the crossbeam of the gantry structure being located above the body along the first direction and having a non-zero gap with the body, the crossbeam having a first through hole with internal threads along the first direction; a rod with external threads, the rod passing through the first through hole and disposed above the body along the first direction, the rod being able to move away from or towards the body under the cooperation of the internal threads and the external threads; and a second elastic member disposed at one end of the rod near the body.

[0014] Optionally, the second fixing part includes: a bracket, the bracket being supported on the first fixing part; and a plurality of fixing rods, each of the fixing rods being detachably connected to the bracket, the plurality of fixing rods corresponding to the plurality of implantable components, and the implantable components being detachably connected to the corresponding fixing rods.

[0015] Optionally, the first fixing part is provided with a first track, the extension direction of the first track is parallel to the second direction, and the bracket can move along the first track to adjust the first fixing position and the relative position of the first fixing part in the second direction.

[0016] Optionally, the multiple fixing rods and the multiple implanted components correspond one-to-one.

[0017] Optionally, at least two of the implanted components correspond to the same fixation rod.

[0018] Optionally, along the second direction, the connection positions of the plurality of implanted components on their respective corresponding fixing rods are flush or extend in an arc shape.

[0019] Optionally, the fixing rod has a second through hole extending along the first direction. The second through hole has an opening that opens toward a third direction. The implanted component can enter or exit the second through hole through the opening. The third direction is perpendicular to the first direction and the second direction.

[0020] Optionally, the second fixing part further includes a second locking part, movably connected to the fixing rod, the second locking part being used to close or open the opening to limit the implanted component within the second through hole or to release the implanted component.

[0021] Optionally, the second locking part includes a baffle plate having opposing third and fourth ends, the third end being fixed to the fixing rod by a fastener, and the fourth end being rotatable about the fastener in the first direction to open or close the opening.

[0022] Optionally, the fourth end may also elastically deform relative to the third end in the third direction to open or close the opening.

[0023] Optionally, the implantation component is provided with a limiting portion to restrict the relative movement of the implantation component and the second fixing portion located within the second through hole in the first direction.

[0024] Optionally, the implantation assembly includes: an insertion rod having a fifth end and a sixth end opposite to each other along the first direction, the fifth end having a receiving hole; and an implantation needle inserted into the receiving hole and extending outward from the receiving hole, at least a portion of the implantation needle being pre-connected to the front end of the electrode wire.

[0025] Optionally, the extension rod includes a first segment extending from the fifth end along the first direction, and a second segment extending from the first segment in a direction away from the fifth end, the first segment and the second segment having a non-zero included angle, and the receiving hole being opened at the end of the second segment.

[0026] Optionally, the electrode wire has an electrode loop at its tip, and at least a portion of the implantation needle passes through the electrode loop beforehand.

[0027] Optionally, the implantation needle includes a stop portion for limiting the length of the implantation needle that can pass through the electrode ring.

[0028] Optionally, the sixth end is provided with a connecting portion for cooperating with an implant head to move the implant component under the drive of the implant head.

[0029] Optionally, the first fixed position is closer to the second end than the first end.

[0030] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects:

[0031] This application adjusts the distance between the signal transmission module and the implantation component so that the length of the second segment of the electrode wire in a suspended state is approximately equal to the target movement amount of the implantation component, avoiding excessively long electrode wires from tangling and affecting implantation efficiency. Furthermore, the implantation component is located in front of the signal transmission module. Apart from the second segment reserved according to the target movement amount, the remaining first segment of the electrode wire extends almost along the implantation component. Therefore, the entire segment of the electrode wire from the signal transmission module to the front end has no obvious folds or overlapping sections, preventing damage to the electrode wire. The larger gaps between adjacent electrode wires also help prevent tangling.

[0032] Furthermore, the various parts of the fixing component (e.g., the first fixing part and the second fixing part) can move relative to each other to adjust the distance between the first fixing position and the second fixing position. Thus, by adjusting the distance between the first fixing position and the second fixing position, the suspended portion of the electrode wire can be kept in a naturally straightened state, preventing the electrode wires from tangling together and thereby improving the electrode wire implantation efficiency.

[0033] Furthermore, each time the electrode implantation device is used, the target movement of the implantation component can be determined based on the target implantation depth of the electrode wire, thereby determining the actual fixed position of the signal transmission module. By moving the first locking part, the signal transmission module is fixed to this actual fixed position, realizing the dynamic adjustment of the target movement of the implantation component as needed.

[0034] Furthermore, the second locking part engages with the opening on the fixing rod, opening or closing via rotation or elastic deformation. This engagement design makes it more convenient to confine the implanted component within the second through hole or release it from the opening, thus improving the efficiency and effectiveness of electrode wire implantation.

[0035] Furthermore, since the perforation of the implantation needle and electrode wire is pre-completed during the implantation procedure using the electrode implantation device of this embodiment, there is no need to perforate the implantation needle and electrode wire or clean the implantation needle during the implantation process. Therefore, it is unnecessary to install corresponding perforation and cleaning equipment on the electrode implantation device. This simplifies the structural design of the electrode implantation device, reduces its overall size, and helps to reduce the difficulty of surgery in limited surgical spaces. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of an electrode implantation device according to an embodiment of the present invention;

[0037] Figure 2 yes Figure 1 Schematic diagram of the first fixed part;

[0038] Figure 3 yes Figure 2 A schematic diagram of a variation of the structure shown;

[0039] Figure 4 yes Figure 1 Schematic diagram of the second fixing part;

[0040] Figure 5 yes Figure 1 A schematic diagram of the embedded components;

[0041] Figure 6 yes Figure 5 A magnified view of a portion of region A in the middle;

[0042] Figure 7 yes Figure 5 A schematic diagram of another embodiment of the structure shown;

[0043] Figure 8 yes Figure 1 Schematic diagram of the middle electrode;

[0044] Figure 9 yes Figure 5 A schematic diagram of the implanted needle;

[0045] Figure 10 This is a schematic diagram of a typical application scenario of an embodiment of the present invention. Detailed Implementation

[0046] As described in the background section, current electrode wire implantation involves reusing the same implantation needle. After implanting one electrode wire, the same needle is used to repeat the insertion process before implanting the next wire. This method is extremely inefficient, time-consuming, and the implantation needle is easily damaged. This prolongs the operation time and increases the risk of infection.

[0047] Therefore, in recent studies, some implantation devices are considering using multiple implantation needles pre-threaded with multiple electrode wires. During implantation, these needles are operated sequentially to insert the electrode wires, thus shortening the operation time. However, in existing multi-electrode-wire implantation devices, the needles are usually arranged side-by-side and densely packed, with the electrode wires very close together. Since the electrode wires are typically quite long, they are prone to tangling if not secured and restrained, still affecting implantation efficiency.

[0048] Existing technologies address the entanglement problem by folding and fixing the implantation portion (i.e., the middle section of the electrode wire) onto the electrode interface unit. However, folding and fixing the electrode wire is difficult, and improper operation may damage the wire, affecting the implantation effect. Furthermore, the electrode interface unit itself is very small; folding and fixing multiple electrode wires within such a small area still carries the risk of overlap and entanglement, failing to truly solve the anti-entanglement problem.

[0049] To address the aforementioned technical problems, this invention provides an electrode implantation device. The electrode includes a signal transmission module and multiple electrode wires. The signal transmission module is located at the rear end of the electrode wires along their extension direction. The electrode implantation device includes: multiple implantation components, each corresponding to one of the multiple electrode wires, wherein each implantation component has a first end and a second end along a first direction, and the first end is pre-connected to the front end of the corresponding electrode wire along its extension direction; a fixing component for fixing the multiple implantation components and the signal transmission module, wherein the multiple implantation components are located in front of the signal transmission module along a second direction, wherein the second direction is perpendicular to the first direction; wherein the electrode wire includes a first segment extending from the front end along the first direction toward the second end, and a second segment connecting the first segment and the signal transmission module; the distance between the first fixed position of the implantation component on the fixing component and the second fixed position of the signal transmission module on the fixing component in the second direction is adjustable to adjust the length of the second segment according to the target movement of the implantation component in the first direction.

[0050] By employing this implementation scheme, the length of the second segment of the electrode wire in a suspended state can be adjusted to be approximately equal to the target movement of the implantation component by adjusting the spacing between the signal transmission module and the implantation component. This avoids excessively long electrode wires from tangling together and affecting implantation efficiency. Furthermore, the implantation component is located in front of the signal transmission module. Apart from the second segment reserved according to the target movement, the remaining first segment of the electrode wire extends almost along the implantation component. As a result, the entire segment of the electrode wire from the signal transmission module to the front end has no obvious folds or overlapping parts, avoiding damage to the electrode wire. The larger gap between adjacent electrode wires also helps prevent tangling.

[0051] To make the above-mentioned objectives, features and beneficial effects of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] Figure 1 This is a schematic diagram of an electrode implantation device 1 according to an embodiment of the present invention.

[0053] In one specific embodiment, the electrode implantation device 1 is used to implant an electrode 2 (e.g., ...) into the target tissue. Figure 8 (As shown). The target tissue can be, for example, biological tissue (e.g., brain tissue). The following uses human brain tissue as an example to illustrate and explain the specific structure and application of this embodiment.

[0054] For ease of description, in this embodiment, the width direction of the electrode implantation device 1 is denoted as the x-direction, the length direction as the y-direction, and the height direction as the z-direction. In this embodiment, front and back refer to the y-direction and its opposite, and up and down refer to the z-direction and its opposite.

[0055] Further, refer to Figure 8 The electrode 2 includes a signal transmission module 21 and multiple electrode wires 22. The electrode wires 22 may have opposite front and rear ends along their extension direction, and the signal transmission module 21 is located at the rear end of the electrode wires 22.

[0056] Compared to traditional rigid neural electrodes, the flexible electrode wire 22 has better biocompatibility and mechanical compliance, and is less likely to form scars or cause rejection reactions in brain tissue. Therefore, using electrode wire 22 for implantation can reduce the damage to brain tissue caused by electrode implantation surgery and improve the electrode implantation effect.

[0057] Furthermore, the actual number of the multiple electrode wires 22 can be set according to actual needs. Furthermore, the electrode wires 22 can be made of a flexible material with biocompatibility and mechanical compliance to reduce the risk of intraoperative damage and postoperative rejection. The biocompatible flexible material can be, for example, polyimide.

[0058] Furthermore, the signal transmission module 21 is used to connect to a signal processing device (not shown) to transmit the brain signals collected by the electrode wire 22 to the signal processing device for analysis and processing. In some embodiments, the signal transmission module 21 may be, for example, an integrated chip or an integrated circuit board.

[0059] Furthermore, due to the flexibility of the electrode wire 22 itself, the rigidity of its implantation end cannot independently complete the puncture and implantation. Therefore, it is necessary to use the electrode implantation device 1 to complete the implantation operation.

[0060] Further reference Figure 8 The electrode wire 22 (e.g., at the implantation end) has an electrode ring 221, the electrode ring 221 and the signal transmission module 21 being located at opposite ends of the electrode wire 22 along its extension direction. Figure 1 The electrode implantation device 1 can cooperate with the electrode ring 221 to implant at least a portion of the electrode wire 22 into the target region E of the brain tissue (e.g., Figure 10 (As shown).

[0061] refer to Figure 1In some embodiments, the electrode implantation device 1 may include: a plurality of implantation components 11, the plurality of implantation components 11 corresponding one-to-one with the plurality of electrode wires 22, wherein each of the implantation components 11 has a first end 111 and a second end 112 along a first direction, the first end 111 passing through the corresponding electrode ring 221 in advance.

[0062] Specifically, the first direction refers to Figure 1 The extension direction of the implanted component 11 is, for example, the z-direction. That is, from the perspective shown in the figure, the first end 111 refers to the lower end of the implanted component 11 along the z-direction, and the second end 112 refers to the upper end of the implanted component 11 along the z-direction.

[0063] During the preparation phase of the electrode implantation surgery, the first end 111 of the implantation assembly 11 can be pre-passed through the electrode ring 221. In some embodiments, the first end 111 and the tip of the electrode wire 22 (e.g., the end where the electrode ring 221 is located) can be bonded together using a soluble biocompatible material. The soluble biocompatible material can be, for example, proteins, carbohydrates, etc. Thus, the tip of the electrode wire 22 is pre-bonded to the first end 111 of the implantation assembly 11, and the movement of the implantation assembly 11 drives the tip of the electrode wire 22 into the brain tissue. After entering the brain tissue, the soluble biocompatible material used for bonding is dissolved by the brain tissue fluid, causing the tip of the electrode wire 22 to separate from the first end 111 of the implantation assembly 11. Then, the implantation assembly 11 is removed to complete the implantation of a single electrode wire 22. The implantation of all electrode wires 22 can be completed sequentially following the aforementioned steps.

[0064] In practical applications, the front end of the electrode wire 22 can be provided with an electrode ring 221. Correspondingly, the first end 111 of the implantation component 11 can pass through the electrode ring 221 beforehand to complete the fixation with the electrode wire 22. Alternatively, the electrode ring 221 structure can be omitted from the front end of the electrode wire 22, and the first end 111 of the implantation component 11 can be directly connected (e.g., bonded) to the front end of the electrode wire 22 to achieve fixation. In this invention, this embodiment is specifically described using the example of the electrode wire 22 having an electrode ring 221 at its front end.

[0065] Continue to refer to Figure 1The electrode implantation device 1 may further include a fixing component 12 for fixing the plurality of implantation components 11 and the signal transmission module 21. The plurality of implantation components 11 are located in front of the signal transmission module 21 along a second direction, wherein the second direction is perpendicular to the first direction. Thus, during the preparation stage of the implantation surgery, the implantation components 11 and the electrode 2 to be implanted can be pre-fixed in a ready position for subsequent electrode implantation operations. When the electrode implantation device 1 and the electrode 2 are in the ready position, the entire device can be considered to be in a ready state. Subsequently, by operating the relevant components, the electrode wire 22 can be efficiently implanted into the target area E.

[0066] In some embodiments, the preparatory position can be determined based on the operating habits of the implantation surgeon (e.g., a doctor) and can be adjusted in a timely manner according to the progress of the surgery and the actual situation.

[0067] In some embodiments, the second direction may be, for example, the y-direction. Accordingly, in the ready state, the implanted component 11 is located in front of the signal transmission module 21 along the y-direction. The ready state may be, for example, Figure 1 The state shown indicates that the implantation component 11 is pre-threaded with the corresponding electrode wire 22, and both the signal transmission module 21 and the implantation component 11 are fixed by the fixing component 12. Furthermore, the surgical operator can adjust the electrode implantation device 1 from its preparatory state to the preparatory position according to the actual situation to facilitate the smooth progress of the surgery.

[0068] Furthermore, since both the signal transmission module 21 and the implantation component 11 are fixed by the fixing component 12, the position of the electrode wire 22 is also fixed.

[0069] Furthermore, the electrode wire 22 includes a first segment 222 extending from the electrode ring 221 along the first direction (e.g., the z-direction) toward the second end 112, and a second segment 223 connecting the first segment 222 and the signal transmission module 21.

[0070] In one specific embodiment, after the electrode loop 221 of the electrode wire 22 is bound or sleeved with the corresponding implantation component 11, the electrode wire 22 may include a first segment 222 extending from the electrode loop 221 along the first direction (e.g., the z-direction). The first segment 222 may be in close contact with the implantation component 11 or have a non-zero gap. This prevents most of the segment of the electrode wire 22 in the pre-positioned position from dangling downwards under gravity and becoming entangled. Furthermore, the extension direction of the first segment 222 is consistent with the extension direction of the implantation component 11, minimizing the contact area between the electrode wire 22 and brain tissue during movement with the implantation component 11, thus avoiding damage to the brain tissue. It also prevents the implantation direction of the electrode wire 22 from deviating from the vertical direction of the target area, such as oblique insertion into the brain tissue, which would affect the implantation effect. Furthermore, the entire segment of the electrode wire 22 from the signal transmission module 21 to the electrode loop 221 has no obvious folds or overlapping portions, preventing damage to the electrode wire 22.

[0071] Further, refer to Figure 1 The distance between the first fixed position of the implanted component 11 on the fixation component 12 and the second fixed position of the signal transmission module 21 on the fixation component 12 in the second direction (e.g., the y direction) is adjustable to adjust the length of the second segment 223 according to the target movement of the implanted component 11 in the first direction (e.g., the z direction).

[0072] Specifically, the first fixed position may be, for example, the position where the implantation component 11 is connected to the fixing component 12 in the preparatory state.

[0073] The second fixed position may be, for example, the position where the signal transmission module 21 is connected to the fixed component 12 in the preparatory state.

[0074] Furthermore, the distance between the first fixed position and the second fixed position in the second direction (e.g., the y direction) is adjustable to adjust the length of the second segment 223 according to the target movement of the implanted component 11 in the first direction (e.g., the z direction).

[0075] Furthermore, the adjustable spacing between the first fixed position and the second fixed position in the second direction (e.g., the y-direction) is equivalent to the adjustable relative position of the fixed component 12 and the signal transmission module 21 in the second direction (e.g., the y-direction).

[0076] Furthermore, the length of the second segment 223 can be, for example, the straight-line distance from the end of the second segment 223 furthest from the signal transmission module 21 (i.e., the boundary point between the second segment 223 and the first segment 222) to the end closest to the signal transmission module 21 in the preparatory state; it can also be called the straight-line length. When the second segment 223 is in a naturally straightened state, the straight-line length of the second segment 223 is approximately equal to the actual length of the second segment 223; when the second segment 223 is in a relaxed, suspended state, the straight-line length of the second segment 223 is less than the actual length of the second segment 223. The actual length of the second segment 223 refers to the value obtained by subtracting the length of the first segment 222 from the total length of the electrode wire 22.

[0077] In other words, adjusting the length of the second segment 223 according to the target movement amount essentially involves adjusting the distance between the first and second fixed positions in the second direction (e.g., the y-direction), so that the straight-line distance between the two ends of the second segment 223 in the suspended state of the electrode wire 22 is approximately equal to the actual length of the second segment 223. At this time, the second segment 223 is in a naturally straightened state. In this state, there is no stress or only small stress that will not damage the electrode wire 22 between points inside the electrode wire 22. Visually, the second segment 223 of the electrode wire 22 can extend in a straight line or exhibit a loose bend at a small angle (within an acceptable range). This effectively prevents the suspended portions of multiple electrode wires 22 from tangling with each other.

[0078] Furthermore, the target movement amount can be, for example, the length by which the implantation component 11 needs to move the electrode ring 221 downwards in a first direction (e.g., the z-direction) during electrode implantation surgery. Thus, when the implantation component 11 implants the electrode ring 221 downwards in the z-direction into the target region E, the length of the pre-reserved, suspended section of the electrode wire 22 (i.e., the length of the second section) can be substantially equal to the straight-line distance from the target region E to the second fixed position, preventing the electrode wire 22 from being pulled and breaking before successful implantation into the target region E.

[0079] Furthermore, the sum of the lengths of the second segment 223 and the first segment 222 can be equal to the length of the electrode wire 22, wherein the length of the first segment 222 is not less than the target implantation depth of the electrode 2.

[0080] Specifically, in combination Figure 1 The electrode wire 22 can be functionally divided into a first section 222 and a second section 223.

[0081] In some embodiments, a fixing structure (not shown) may be provided on the implantation component 11, which may be, for example, a hook. The fixing structure secures the end of the first segment 222 away from the electrode ring 221 to the implantation component 11. In this case, the first segment 222 refers to the segment of the electrode wire 22 from the electrode ring 221 to the fixing structure, and the second segment 223 refers to the segment from the fixing structure to the signal transmission module 21.

[0082] In some embodiments, the first segment 222, or at least the junction (i.e., the boundary) between the first segment 222 and the second segment 223, can also be bonded to the implantation component 11 with a soluble biocompatible material. This can also serve to fix at least a portion of the electrode wire 22, preventing excessively long electrode wires 22 from arbitrarily dangling and tangling, thus affecting implantation efficiency.

[0083] In one variation, the position of the fixation structure on the implantation assembly 11 is adjustable. This allows for adaptive adjustment of the actual lengths of the first segment 222 and the second segment 223 according to the length of the electrode wire 22 to be implanted.

[0084] In some embodiments, the extension direction of the first segment 222 can be consistent with the extension direction of the implantation component 11. In this case, the movement direction of the implantation component 11 is the implantation direction of the electrode wire 22. Thus, the movement direction of the segment of the electrode wire 22 to be implanted in the brain tissue can be consistent with the movement direction of the implantation component 11. The implantation direction of the electrode wire 22 can be adjusted in real time by adjusting the movement direction of the implantation component 11, avoiding situations such as oblique insertion of the electrode wire 22 and optimizing the electrode implantation effect.

[0085] Furthermore, the length of the first segment 222 is not less than the target implantation depth of the electrode. In other words, the length of the first segment 222 is not less than the length of the portion of the electrode wire 22 to be implanted into the brain tissue. Thus, the portion of the electrode wire 22 extending along the implantation assembly 11 is long enough to ensure successful arrival at the target region E.

[0086] Continue to refer to Figure 1The fixing component 12 may include: a first fixing part 121 for fixing the signal transmission module 21; and a second fixing part 122, to which the plurality of implanted components 11 are detachably connected, and which is movably connected to the first fixing part 121 and can move relative to the first fixing part 121 in a second direction (e.g., the y-direction). Thus, the first fixing part 121 and the second fixing part 122 of the fixing component 12 can move relative to each other to adjust the distance between the first fixing position and the second fixing position. Furthermore, by adjusting the relative position of the first fixing part 121 and the second fixing part 122, the length of the second segment 223 can be adjusted.

[0087] Specifically, in combination Figure 1 In the ready state, the signal transmission module 21 is fixed by the first fixing part 121, the implantation assembly 11 of the pre-assembled electrode ring 221 is fixed by the second fixing part 122, and the electrode ring 221 of the electrode wire 22 is also fixed. At this time, both ends of the electrode wire 22 are directly or indirectly fixed by the fixing assembly 12.

[0088] Furthermore, multiple implantation components 11 are detachably connected to the second fixing part 122. Thus, during electrode implantation surgery, only one implantation component 11 needs to be removed from the second fixing part 122 each time, and the corresponding electrode wire 22 can be implanted conveniently and quickly by moving it downward, making the operation simpler.

[0089] Furthermore, the second fixing part 122 is movably connected to the first fixing part 121 and can move relative to the first fixing part 121 in a second direction (e.g., the y direction).

[0090] In some embodiments, reference Figure 1 A third through hole 1226 may be provided on the second fixing part 122. The third through hole 1226 is suitable for adding a fastener (not shown in the figure) to limit the relative displacement between the second fixing part 122 and the first fixing part 121.

[0091] In a variation, the first fixing part 121 may also be provided with a fourth through hole (not shown in the figure) corresponding to the third through hole 1226. The first fixing part 121 and the second fixing part 122 can be pre-adjusted to their relative positions according to the length of the second section 223 of the electrode wire 22 that needs to be reserved, so that the actual length of the second section 223 is substantially equal to the length of the second section 223. At this time, the second section 223 of the electrode wire 22 is in a naturally straightened state, which can effectively prevent multiple electrode wires 22 from dangling and tangling. Furthermore, after determining the relative positions of the first fixing part 121 and the second fixing part 122 in the preparatory state, they can be fixed by means of, for example, a pin, to prevent unexpected relative displacement between the first fixing part 121 and the second fixing part 122 during the electrode implantation surgery, which could cause the electrode wires 22 to break or become tangled, affecting the operation.

[0092] In one variation, a clamping structure (not shown in the figure) may be provided at the connection between the first fixing part 121 and the second fixing part 122, clamping the first fixing part 121 and closely abutting both sides of the second fixing part 122 along the y-direction. This also restricts relative displacement between the second fixing part 122 and the first fixing part 121.

[0093] In some embodiments, such as Figure 2 As shown, the first fixing part 121 may further include a clamping part 1227, which is disposed behind the first fixing part 121 along the y-direction. After the pre-assembly of the electrode implantation assembly 11 is completed, the electrode implantation device 1 is fixed in the prepared position by the clamping part 1227 to facilitate the subsequent electrode implantation surgery.

[0094] For example, the electrode implantation device 1 is connected to a brain-body locator (not shown) via a clamping part 1227. The brain-body locator moves the entire device to a suitable position in the fenestration area, such as... Figure 10 As shown.

[0095] Combination Figure 1 and Figure 2 In some embodiments, the first fixing part 121 may include a body 1211 and a first locking part 1212, wherein the first locking part 1212 is used to apply a force to the body 1211 to fix the signal transmission module 21 between the body 1211 and the first locking part 1212. Thus, the signal transmission module 21 can be fixed by the cooperation of the body 1211 and the first locking part 1212.

[0096] Continue to refer to Figure 2In some embodiments, the body 1211 may be provided with a first track 12111, the extension direction of the first track 12111 being parallel to the second direction (e.g., the y-direction). The first locking part 1212 can move along the first track 12111 to adjust the relative position of the second fixed position on the body 1211. Thus, the target movement amount can be determined based on the target implantation depth, thereby determining the actual fixed position of the signal transmission module 21. By moving the first locking part 1212, the signal transmission module 21 is fixed to this actual fixed position, achieving dynamic adjustment of the target movement amount of the electrode wire 22 as needed. Furthermore, by adjusting the relative position of the second fixed position on the body 1211, the straightening degree of the second segment 223 of the electrode wire 22 can be adjusted, avoiding excessive drooping that leads to entanglement and affects the surgical effect, and also avoiding excessive straightening that causes the electrode wire 22 to break.

[0097] Further reference Figure 2 The first locking part 1212 includes: a base 12121 connected to the body 1211, the base 12121 being located above the body 1211 along the first direction (e.g., the z-direction); and a first elastic member 12122 extending from the base 12121 toward the body 1211, the bent segment 12122a of the first elastic member 12122 abutting against the body 1211 and exhibiting elastic deformation. In a typical application scenario, such as... Figure 1 As shown, the signal transmission module 21 is reliably held against the surface of the body by the bent section 12122a. This simplifies the operation of fixing the signal transmission module 21, and the first elastic element 12122 can be periodically disassembled and replaced to prevent aging.

[0098] Specifically, in some embodiments, the base 12121 may include a gantry structure 12123 mounted on the body 1211. The base 12121 has a crossbeam 12124 and support portions 12125 connected to both ends of the crossbeam 12124 along the x-direction. The support portions 12125 enable a non-zero gap between the crossbeam 12124 and the upper surface of the body 1211 along the z-direction for assembling the first elastic member 12122. The upper surface of the body 1211 may be, for example, the top surface of the body 1211 facing upwards along the z-direction.

[0099] In some embodiments, a first protrusion 12112 extends upward from the upper surface of the body 1211. The first protrusion 12112 may be, for example, two ribs extending in the y-direction, disposed inside the support portion 12125 of the base 12121 in the x-direction, and contacting the inner surface of the support portion 12125 in the x-direction. Thus, the first protrusion 12112 and the support portion 12125 cooperate to limit the relative displacement of the first locking portion 1212 and the body 1211 in the x-direction.

[0100] Furthermore, the length of the first protrusion 12112 extending from the upper surface of the body 1211 can be adapted to the distance from the crossbeam 12124 to the upper surface of the body 1211, so that the upper end of the first protrusion 12112 abuts against the crossbeam 12124, further increasing the stability of the overall structure of the first fixing part 121.

[0101] In some embodiments, a fifth through hole 12125a may be provided on the support portion 12125 of the base 12121. The fifth through hole 12125a may have a threaded structure inside, suitable for installing fasteners (not shown in the figure). The fastener is used to clamp the first protrusion 12112 inward along the x-direction to limit the relative displacement between the first locking portion 1212 and the body 1211.

[0102] Furthermore, the body 1211 has grooves on its two outer sides in the x direction, and the grooves extend in the y direction to form the first track 12111. The first locking part 1212 can move along the first track 12111 to adjust the position of the signal transmission module 21 of the electrode 2 on the body 1211.

[0103] In some embodiments, the groove can be a dovetail groove, and the support portion 12125 of the base 12121 is provided with a second protrusion 12125b at its lower end in the z direction, facing the first track 12111. The second protrusion 12125b can be inserted into the first track 12111. Thus, the first locking portion 1212 and the body 1211 can move smoothly relative to each other in the y direction, while the relative displacement between the first locking portion 1212 and the body 1211 in the x and z directions can be restricted.

[0104] In a typical application scenario, when adjusting the first and second fixed positions, the fastener added to the fifth through hole 12125a can be initially in a relaxed state. The relative position of the first locking part 1212 on the body 1211 is adjusted according to the actual length of the second segment 223 of the electrode wire 22, so that the second segment 223 is in a naturally straightened state. After the relative position is determined, the fastener is clamped to limit the relative displacement between the first locking part 1212 and the body 1211. The relative displacement may include relative displacement along the x-direction, y-direction, or z-direction.

[0105] In some embodiments, continue to refer to Figure 2 The first elastic element 12122 is disposed on the lower surface of the crossbeam 12124 along the z direction.

[0106] Furthermore, the first elastic member 12122 includes a straight section 12122b and a bent section 12122a formed by bending one end of the straight section 12122b toward the body 1211. The straight section 12122b is used for fixed connection with the base 12121, and the connection method can be, for example, through a fastener 4, which can be, for example, a screw.

[0107] Furthermore, the lower end of the bent segment 12122a along the z-direction abuts against the upper surface of the body 1211 to fix the signal transmission module 21. Furthermore, the bent segment 12122a has a certain degree of elasticity; it can be pried open or bent further along the z-direction using tools such as tweezers to create a gap for placing the signal transmission module 21 below it. When the force on the bent segment 12122a disappears, it can spring back to hold the signal transmission module 21 against the body 1211.

[0108] exist Figure 2 In the illustrated embodiment, the first elastic element 12122 may have two bending structures along the x-direction. In this case, the first elastic element 12122 has two straight segments 12122b, each connected to the base 12121 via a fixing member 4. A downwardly protruding bent segment 12122a connects the two straight segments 12122b, used to hold the signal transmission module 21 against the body 1211. Therefore, the clamping force of the first elastic element 12122 can be further enhanced to prevent the signal transmission module 21 from loosening during implantation and affecting the surgery.

[0109] In one variation, the first elastic member 12122 may include a straight section 12122b, one end of which is connected to a bent section 12122a. Thus, the bent section 12122a can be used to hold the signal transmission module 21 against the body 1211.

[0110] In one variation, refer to Figure 3 The first locking part 1212 may include: a gantry structure 12123, which is disposed on the body 1211, the crossbeam 12124 of the gantry structure 12123 being located above the body 1211 along the first direction (e.g., the z-direction) and having a non-zero gap with the body 1211, the crossbeam 12124 having a first through hole 12126 with internal threads along the first direction (e.g., the z-direction); a rod part 12127 with external threads, which is disposed above the body 1211 along the first direction (e.g., the z-direction) through the first through hole 12126, and the rod part 12127 can move away from or towards the body 1211 under the cooperation of the internal threads and the external threads; and a second elastic member 12128, which is disposed at the end of the rod part 12127 near the body 1211.

[0111] Specifically, the non-zero gap between the crossbeam 12124 and the body 1211 is used to place and fix the signal transmission module 21 of the electrode wire 22. Furthermore, the external thread of the rod 12127 is adapted to the internal thread of the first through hole 12126, and the rod 12127 can be rotated to move up and down relative to the crossbeam 12124 in the z direction to release or clamp the signal transmission module 21 placed on the body 1211.

[0112] Furthermore, a second elastic element 12128 may be provided at one end of the rod 12127 near the body 1211. The second elastic element 12128 can move downward with the rod 12127 until the signal transmission module 21 is held against the body 1211. At this time, the second elastic element 12128 undergoes elastic deformation, making the signal transmission module 21 more firmly held against the body 1211.

[0113] Furthermore, the second elastic element 12128 only moves up and down in the z direction with the rod 12127, and does not rotate in the plane formed by the x and y directions, so as to avoid driving the signal transmission module 21 to rotate after contacting the signal transmission module 21, causing the electrode wire 22 to become entangled.

[0114] Furthermore, the second elastic member 12128 (or at least the head of the second elastic member 12128 that contacts the signal transmission module 21) can be made of a soft elastic material such as silicone to avoid damage to the signal transmission module 21 when fixing it.

[0115] In some embodiments, the second elastic member 12128 is detachably connected to the rod portion 12127 to facilitate the replacement of the second elastic member 12128.

[0116] Therefore, the signal transmission module 21 can be fixed by rotating the rod 12127, making operation simpler. Furthermore, the amount of pressure applied can be controlled by the downward displacement of the rod 12127, which helps to avoid damaging the signal transmission module 21 due to excessive pressure during the application process.

[0117] In a specific implementation, combined with Figure 1 and Figure 4 The second fixing part 122 may include: a bracket 1221, the bracket 1221 being supported on the first fixing part 121; and multiple fixing rods 1222, each of the fixing rods 1222 being detachably connected to the bracket 1221, the multiple fixing rods 1222 corresponding to the multiple implantation components 11, and the implantation components 11 being detachably connected to the corresponding fixing rods 1222.

[0118] Specifically, the lower end of the bracket 1221 along the z-direction contacts the first fixing part 121.

[0119] In some embodiments, such as Figure 4 As shown, the bracket 1221 includes two side panels 12211 opposite each other in the x direction, and a connecting plate 12212 is provided between the two side panels 12211 to enhance the structural stability of the bracket 1221.

[0120] Furthermore, the bracket 1221 also includes an upper panel 12213, which is connected to the upper ends of the two side panels 12211 along the z-direction.

[0121] Furthermore, the fixing rod 1222 has a corresponding head 12221 and a tail 12222. The tail 12222 is detachably connected to the upper panel 12213.

[0122] In some embodiments, the upper panel 12213 is provided with a plurality of mounting slots 12214 spaced apart along the x direction and facing the y direction, each of the plurality of mounting slots 12214 being used to receive the tail 12222 of the corresponding fixing rod 1222.

[0123] In some embodiments, the mounting groove 12214 may be provided with an insert (not shown) extending toward the fixing rod 1222, and the tail 12222 of the fixing rod 1222 may be provided with a corresponding receiving groove (not shown). When the tail 12222 of the fixing rod 1222 is inserted into the mounting groove 12214, the insert is also inserted into the receiving groove of the tail 12222. This restricts the relative displacement of the fixing rod 1222 and the bracket 1221 in the z-direction.

[0124] In some embodiments, reference Figure 4The fixing rod 1222 and the upper panel 12213 can also be detachably connected via the fixing member 4. Therefore, the fixing rod 1222 of different lengths can be adjusted and replaced according to actual factors such as the length of the electrode wire 22, so as to improve the applicability of the overall device.

[0125] Furthermore, multiple fixing rods 1222 correspond to multiple implantable components 11, and the implantable components 11 can be detachably connected to the corresponding fixing rods 1222. Specifically, the implantable components 11 are connected to the head 12221 of the fixing rods 1222.

[0126] As described above, the bracket 1221 and the fixing rod 1222 extend along a first direction (e.g., the z-direction) and a second direction (e.g., the y-direction), respectively, to increase the distance between the first fixing position and the second fixing position. This helps to avoid collisions with the bracket 1221 or the first fixing part 121 when the implanted component 11 is retrieved. Simultaneously, the cooperation of the bracket 1221 and the fixing rod 1222 also provides sufficient space for the suspension of the second segment 223 of the electrode wire 22, preventing the electrode wire 22 from becoming entangled due to the suspension of the second segment 223.

[0127] Continue to refer to Figure 1 , Figure 2 and Figure 4 In some embodiments, the first fixing part 121 is provided with a first track 12111, the extension direction of the first track 12111 being parallel to the second direction (e.g., the y-direction). The bracket 1221 can move along the first track 12111 to adjust the relative position of the first fixing position and the first fixing part 121 in the second direction (e.g., the y-direction). Thus, the length of the second segment 223 can be adjusted by changing the relative position of the bracket 1221 and the first fixing part 121, so that the second segment 223 naturally straightens and avoids tangling.

[0128] In some embodiments, the lower ends of a pair of side panels 12211 of the bracket 1221 are respectively provided with third protrusions 12215 extending toward the first track 12111, and the third protrusions 12215 can be inserted into the first track 12111. Thus, the bracket 1221 can move along the first track 12111. Simultaneously, the cooperation between the third protrusions 12215 and the first track 12111 can also limit the relative displacement of the first fixing part 121 and the second fixing part 122 in the z-direction.

[0129] In some embodiments, such as Figure 1 As shown, the first locking part 1212 and the bracket 1221 can share the same first track 12111. For example, they can be respectively arranged one in front of the other on the first track 12111 along the y direction.

[0130] In some embodiments, in the y direction, the first locking part 1212 is disposed in front of the bracket 1221 to avoid mutual interference between the bracket 1221 and the electrode wire 22, which would affect the normal progress of the electrode implantation surgery.

[0131] Continue to refer to Figure 1 Each of the multiple fixing rods 1222 can correspond one-to-one with one of the multiple implantable components 11. Thus, in the ready state, each implantable component 11 can be fixed to its respective fixing rod 1222 without interference, avoiding falling off or colliding with each other and affecting the surgical outcome.

[0132] Specifically, in the ready state, each fixing rod 12222 has an implantation component 11 fixed to its head 12221 so that the implantation component 11 can be used during the electrode implantation surgery.

[0133] Continue to refer to Figure 1 and Figure 4 The fixing rod 1222 may have a second through hole 1223 extending along the first direction (e.g., the z-direction). The second through hole 1223 has an opening 1224 opening towards a third direction (e.g., the x-direction). The implanted component 11 can enter or exit the second through hole 1223 through the opening 1224. The third direction (e.g., the x-direction) is perpendicular to the first direction (e.g., the z-direction) and the second direction (e.g., the y-direction).

[0134] Specifically, the second through hole 1223 is formed at the head 12221 of the fixing rod 1222. For a single implant component 11, during the surgical preparation stage, the implant component 11 is housed in the second through hole 1223. During the electrode implantation surgery, the implant component 11 is removed from the second through hole 1223 to complete the implantation of the electrode wire 22. Thus, the implant component 11 is easy to access.

[0135] In some embodiments, the fixation rod 1222 and the implantation component 11 can also be magnetically connected. For example, the fixation rod 1222 is a magnetic material, and the implantation component 11 is a magnetic conductor. Alternatively, the fixation rod 1222 is a magnetic conductor, and the implantation component 11 is a magnetic material. Yet another example is that both the fixation rod 1222 and the implantation component 11 are magnetic materials, and they can be magnetically connected. This further enhances the binding force of the fixation rod 1222 on the implantation component 11, preventing the implantation component 11 from falling off during the procedure and affecting the surgical process.

[0136] In one variation, the fixing rod 1222 may have multiple second through holes 1223 to accommodate and fix multiple implantable components 11. Thus, at least two implantable components 11 can correspond to the same fixing rod 1222.

[0137] In some embodiments, along the second direction (e.g., the y-direction), the connection positions of the plurality of implanted components 11 on their respective corresponding fixing rods 1222 are flush, such as... Figure 1 As shown.

[0138] In one variation, the lengths of the multiple fixation rods 1222 along the y-direction can vary, with longer fixation rods 122 accommodating a greater number of implantable components 11 at intervals along the y-direction. For example, the heads of the multiple 1222 extend in an arc shape within the plane formed by the x and y directions, with the fixation rods 122 closer to the center along the x-direction being longer, thus allowing for the fixation of more implantable components 11. Consequently, more implantable components 11 can be accommodated in a single preparatory state, which is beneficial for further improving implantation efficiency.

[0139] Furthermore, the second fixing part 122 may also include a second locking part 1225, which is movably connected to the fixing rod 1222. The second locking part 1225 is used to close or open the opening 1224 to limit the implanted component 11 within the second through hole 1223 or to release the implanted component 11.

[0140] Specifically, refer to Figure 1 and Figure 4 In some embodiments, the second locking part 1225 is disposed on the surface of the opening 1224 in the opening direction and is movably connected to the fixing rod 1222. The movable connection can be, for example, a threaded connection, a keyed connection, or a pin connection. Thus, when the second locking part 1225 closes the opening 1224, the implanted component 11 is fixed within the second through hole 1223, preventing the implanted component 11 from falling out during surgery and affecting the surgical outcome.

[0141] Further reference Figure 1 and Figure 4 The second locking part 1225 may include a baffle plate having a third end 12251 and a fourth end 12252 opposite to each other. The third end 12251 is fixed to the fixing rod 1222 by a fastener 4. The fourth end 12252 is rotatable about the fastener 4 in a plane formed by the y and z directions to open or close the opening 1224.

[0142] In some embodiments, the third end 12251 of the baffle is fixed by the fastener 4 to one side of the opening 1224 along the y direction, and the fourth end 12252 naturally extends to the other side of the opening 1224 along the y direction in the ready state, so that the baffle can close the opening 1224 in the ready state.

[0143] Furthermore, the fourth end 12252 of the baffle can rotate around the fixing member 4 in the plane of the opening 1224. During the preoperative preparation stage, the fourth end 12252 of the baffle is rotated until the opening 1224 is fully opened. The implantation component 11 is placed inside the second through-hole 1223 through the opening 1224. Then, the fourth end 12252 is rotated in the opposite direction until the opening 1224 is closed. Thus, in the x-direction, the second through-hole 1223 is closed, and the implantation component 11 is fixed inside the second through-hole 1223. Correspondingly, during the electrode implantation stage, the implantation component 11 can be easily removed by rotating the fourth end 12252 of the baffle.

[0144] In some embodiments, a torsion spring structure (not shown in the figure) may be provided at the connection between the third end 12251 and the fixed rod 1222 so that the fourth end 12252 can automatically return to the position of closing the opening 1224 after the corresponding operation is performed by opening the opening 1224.

[0145] Furthermore, such as Figure 4 As shown, the fourth end 12252 of the baffle is provided with a corresponding recess 12253 along the z direction, which is suitable for surgical tools (such as forceps) to hold it to open or close the opening 1224.

[0146] In a variation, the fourth end 12252 may also elastically deform relative to the third end 12251 in the third direction (e.g., the x direction) to open or close the opening 1224.

[0147] In a specific application scenario, the fourth end 12252 can be pried open away from the fixing rod 1222 using a tool, or the implantation component 11 itself can be used to push the fourth end 12252 open. At this time, the baffle undergoes elastic deformation, and the opening 1224 is opened. When it is necessary to close the opening 1224, the external force that pried open the fourth end 12252 is removed, and the baffle will automatically spring back to the position when the opening 1224 is closed. Therefore, the opening and closing of the opening 1224 is convenient, which helps to improve the efficiency of electrode implantation surgery.

[0148] Figure 5 yes Figure 1 A schematic diagram of the embedded component 11.

[0149] like Figure 5 As shown, in some embodiments, the implantation component 11 may be provided with a limiting portion 118 for limiting the relative movement of the implantation component 11 and the second fixing portion 122 located within the second through hole 1223 in the first direction (e.g., the z direction).

[0150] Specifically, the limiting part 118 is disposed at the second end 112 of the implantation component 11. In the ready state, the projection of the limiting part 118 along the z-direction at least partially exceeds the projection range of the second through hole 1223. Thus, in the ready state, the limiting part 118 contacts the non-through hole area of ​​the upper surface of the fixing rod 1222 along the z-direction, so that the implantation component 11 can be suspended on the fixing rod 1222, preventing the implantation component 11 from falling off, affecting the surgical outcome, and causing surgical accidents.

[0151] Figure 6 yes Figure 5 A magnified view of region A where component 11 is implanted.

[0152] Combination Figure 5 In some embodiments, the implantation assembly 11 may include: an extension rod 113 having a fifth end 1131 and a sixth end 1132 opposite each other along the first direction (e.g., the z-direction), the fifth end 1131 having a receiving hole 114; and an implantation needle 115 inserted into the receiving hole 114 and extending outward from the receiving hole 114, at least a portion of the implantation needle 115 being pre-connected to the front end of the electrode wire, for example, pre-passing through the electrode ring 221.

[0153] In one specific embodiment, the sixth end 1132 is adapted to form the second end 112 of the implantation assembly 11, and the end of the implantation needle 115 away from the extension rod 113 forms the first end 111.

[0154] Furthermore, the extension rod 113 is used to move the implantation needle 115 and the electrode ring 221, and to implant the electrode ring 221 into the target area E of the brain tissue according to the target movement amount and the target implantation depth.

[0155] Furthermore, the fifth end 1131 is provided with a receiving hole 114 for receiving the implantation needle 115.

[0156] In some embodiments, the cross-sectional area of ​​the receiving hole 114 is the same as or slightly smaller than the cross-sectional area of ​​the implantation needle 115, so that the inner wall of the receiving hole 114 is squeezed against the implantation needle 115, increasing friction and preventing the implantation needle 115 from falling off.

[0157] In one variation, the portion of the implantation needle 115 extending into the receiving hole 114 may have an external thread structure, and correspondingly, the inner wall of the receiving hole 114 has an internal thread structure. The implantation needle 115 is assembled with the extension rod 113 by rotation. This makes the connection between the implantation needle 115 and the extension rod 113 more secure, effectively preventing accidents such as the implantation needle 115 falling off during implantation.

[0158] Furthermore, the portion of the implantation needle 115 extending out of the receiving hole 114 is used to pre-pass through the electrode ring 221 to improve the efficiency of the implantation surgery and avoid repeated insertion of the electrode ring 221 during the operation, which would prolong the operation time and increase the risk of infection.

[0159] Considering the significant diameter difference between the insertion rod 113 and the implantation needle 115, and that the implantation needle 115 is typically a tungsten needle with a hardness potentially much greater than that of the insertion rod 113, integrated manufacturing would require more sophisticated processes and result in higher production costs. Therefore, this embodiment employs a modular design for the implantation component 11, making it easier to manufacture. Furthermore, the modular design saves on consumable costs; after each use, only the implantation needle 115 needs to be replaced, without needing to replace the insertion rod 113, which also helps reduce medical device costs.

[0160] In some embodiments, the diameter of the insertion rod 113 may be, for example, about 20 micrometers, and the diameter of the implantation needle 115 may be, for example, about 12 micrometers.

[0161] In one specific implementation, during the preparation state and electrode implantation, the outer surfaces of the electrode wire 22 and the insertion rod 113 can be kept dry to avoid adhesion between the electrode wire 22 (e.g., the first segment 222 of the electrode wire 22) and the insertion rod 113. Such adhesion would cause the insertion rod 113 to pull on the electrode wire 22 when it is withdrawn from the target area E, affecting the implantation effect.

[0162] Figure 7 yes Figure 5 A schematic diagram of another embodiment of the structure shown.

[0163] like Figure 7 As shown, in some embodiments, the insertion rod 113 may include a first segment 1133 extending from the fifth end 1131 along the first direction (e.g., the z-direction), and a second segment 1134 extending from the first segment 1133 in a direction away from the fifth end 1131, the first segment 1133 and the second segment 1134 having a non-zero included angle, and the receiving hole 114 being opened at the end of the second segment 1134. Thus, the implantation assembly 11 is generally L-shaped, which is suitable for surgical scenarios where the implantation opening is on the side.

[0164] In the cochlear nuclear electrode implantation scenario, the implantation component 11 first moves up and down (e.g., in the z direction) to the appropriate position and then moves laterally (e.g., in the y or x direction) to complete the lateral window implantation operation.

[0165] In some embodiments, the angle between the first segment 1133 and the second segment 1134 is adjustable to further improve the applicability of the implanted component 11.

[0166] Figure 9 yes Figure 5 A schematic diagram of the implanted needle 115.

[0167] like Figure 9 As shown, the implantation needle 115 includes a stop portion 116 for limiting the length of the implantation needle 115 that can pass through the electrode ring 221. This prevents the implantation needle 115 from excessively passing through and damaging the electrode ring 221.

[0168] In some embodiments, the implantation needle 115 may include a needle tip 1151, a needle shaft 1152, and a needle tail 1153. The cross-sectional area of ​​the needle tail 1153 is adapted to the cross-sectional area of ​​the receiving hole 114, and the needle tail 1153 can be inserted into the receiving hole 114 to complete the assembly with the extension rod 113.

[0169] Furthermore, the end of the needle bar 1152 near the needle tip 1151 has a significantly different diameter from the needle tip 1151, forming a step as a stop portion 116. Furthermore, the cross-sectional area of ​​the stop portion 116 is larger than the cross-sectional area of ​​the needle tip 1151 but smaller than the cross-sectional area of ​​the needle tail 1153.

[0170] In a typical application scenario, the diameter of the cross-section of the needle shaft 1152 (and the stop portion 116) can be, for example, 50 micrometers, the diameter of the cross-section of the needle tip 1151 can be, for example, 12 micrometers, and the diameter of the electrode ring can be, for example, 20 micrometers. Thus, the needle tip 1151 can easily pass through the electrode ring 221, while the electrode ring 221 can be secured at the end of the stop portion 116 near the needle tip 1151. Compared to the needle-like structure commonly used in existing implantation needles, i.e., a design with a naturally transitioning diameter (overall conical shape), the implantation needle 115 used in this application adopts a three-segment cylindrical structure. The stepped design from the needle shaft 1152 to the needle tip 1151 prevents the implantation needle 115 from excessively penetrating and damaging the electrode ring 221.

[0171] In one variation, the stop portion 116 may also be a ring of protrusions surrounding the needle bar 1152. When the electrode ring 221 is pre-passed through, the electrode ring 221 can be secured to the stop portion 116, which can also prevent the implantation needle 115 from excessively passing through and damaging the electrode ring 221.

[0172] Figure 10 This is a schematic diagram of a typical application scenario of an embodiment of the present invention. In this application scenario, the above-described... Figures 1 to 9 The electrode implantation device 1 shown implants the electrode wire 22 into the target area E.

[0173] Electrode implantation surgery using the electrode implantation device 1 includes the following two stages:

[0174] During the preoperative preparation stage, the implantation needle 115 on the implantation component 11 is pre-passed through the corresponding electrode ring 221, and the first segment 222 of the electrode wire 22 is extended and fixed along the extension direction of the implantation component 11. After the pre-passing operation is completed, multiple implantation components 11 are fixed in the first fixed position. Further, the first locking part 1212 fixes the signal transmission module 21 in the second fixed position. Then, the distance between the first fixed position and the second fixed position is adjusted according to the slack of the second segment 223 of the electrode wire 22, so that the second segment 223 is naturally straightened. At this time, the electrode implantation device 1 and the electrode 2 fixed thereon are in a ready state.

[0175] During the electrode wire 22 implantation stage, the implantation head 3 approaches the implantation assembly 11 and captures the implantation assembly 11 by connecting to the connection part 117. After capturing the implantation assembly 11, the implantation head 3 detaches the implantation assembly 11 from the electrode implantation device 1. Specifically, the opening 1224 on the fixing rod 1222 can be opened by moving the baffle to detach the implantation assembly 11 from the fixing rod 1222. Further, after the implantation head 3 moves the implantation assembly 11 to the target area E, the implantation needle 115 moves the electrode ring 221 to implant the electrode wire 22 into the brain tissue. Subsequently, the implantation needle 115 is withdrawn, leaving the electrode wire 22 in the brain tissue, thus completing the implantation of a single electrode wire 22.

[0176] Repeat the above operation until all the pre-pierced electrode wires 22 have been implanted into the brain tissue.

[0177] In some embodiments, combined with Figure 5 and Figure 7 The sixth end 1132 is provided with a connecting part 117, which is used to cooperate with the implant head 3 to move the implant component 11 under the drive of the implant head 3.

[0178] In some embodiments, the connecting portion 117 is magnetically connected to the implant head 3. For example, the connecting portion 117 is a magnetic material, and the implant head 3 is a magnetic conductor. Alternatively, the connecting portion 117 is a magnetic conductor, and the implant head 3 is a magnetic material. Yet another example is that both the connecting portion 117 and the implant head 3 are magnetic materials, and they can be magnetically connected. Thus, when the implant head 3 approaches the implant assembly 11, the connecting portion 117 can be acquired by the implant head 3 due to magnetic attraction and move with the implant head 3.

[0179] In some embodiments, the connection between the implant head 3 and the connecting part 117 may be, for example, a pneumatic gripper or a mechanical gripper.

[0180] Furthermore, a needle cap structure (not shown in the figure) can be provided on the implant head 3. The needle cap structure can be fitted onto the connecting part 117. This increases the contact area between the connecting part 117 and the implant head 3, making the connection between the connecting part 117 and the implant head 3 more stable and preventing it from falling off during surgery, thus affecting the surgical outcome.

[0181] refer to Figure 1 and Figure 10 In some embodiments, the first fixing position is closer to the second end 112 than the first end 111. In other words, in the ready state, the first fixing position can be on the upper side of the implantation component 11 along the z-direction. This reduces the overall space occupied by the electrode implantation device 1, facilitating the operation of the electrode implantation surgery. At the same time, it also helps to lower the center of gravity of the electrode implantation device 1 and improve the structural stability of the electrode implantation device 1.

[0182] Therefore, by adopting the technical solution of this application, by adjusting the distance between the signal transmission module 21 and the implantation component 11, the length of the second segment 223 of the electrode wire 22 in the suspended state is basically equal to the target movement amount of the implantation component 11, thus avoiding excessively long electrode wires 22 from being suspended and tangling with each other, affecting the implantation efficiency. Furthermore, the implantation component 11 is located in front of the signal transmission module 21. Except for the second segment 223 reserved according to the target movement amount, the remaining first segment 222 of the electrode wire 22 extends basically along the implantation component 11. Thus, the entire segment of the electrode wire 22 from the signal transmission module 21 to the electrode ring 221 has no obvious folds or overlapping parts, avoiding damage to the electrode wire 22. The gap between adjacent electrode wires 22 is larger, which helps to prevent tangling.

[0183] Furthermore, the various parts of the fixing component 12 (e.g., the first fixing part 121 and the second fixing part 122) can move relative to each other to adjust the distance between the first fixing position and the second fixing position. Thus, by adjusting the distance between the first fixing position and the second fixing position, the suspended portion (second segment 223) of the electrode wire 22 can be kept in a naturally straightened state, preventing the electrode wires 22 from tangling together, thereby improving the implantation efficiency of the electrode wire 22.

[0184] Furthermore, each time the electrode implantation device 1 is used, the operator can determine the target movement amount of the implantation component 11 based on the target implantation depth of the electrode wire 22, and thus determine the actual fixed position of the signal transmission module 21. By moving the first locking part 1212, the signal transmission module 21 is fixed to this actual fixed position, thereby realizing the dynamic adjustment of the target movement amount of the implantation component 11 as needed.

[0185] Furthermore, the second locking part 1225 engages with the opening 1224 on the fixing rod 1222, and the opening 1224 is opened or closed by rotation or elastic deformation. This engagement design makes it more convenient to limit the implantation component 11 within the second through hole 1223 or to release the implantation component 11, which is beneficial to improving the efficiency and effectiveness of electrode wire implantation.

[0186] Furthermore, since the perforation of the implantation needle 115 and electrode wire 22 is pre-completed during the implantation operation using the electrode implantation device 1 of this embodiment, there is no need to perforate the implantation needle 115 and electrode wire 22 or clean the implantation needle 115 during the implantation process. Therefore, it is unnecessary to install corresponding perforation and cleaning equipment on the electrode implantation device 1. This simplifies the structural design of the electrode implantation device 1, reduces its overall size, and helps to reduce the difficulty of surgery in a limited surgical space.

[0187] In the embodiments of this application, "multiple" refers to two or more.

[0188] The descriptions of "first," "second," "third," etc., appearing in the embodiments of this application are for illustrative purposes and to distinguish the objects being described. They have no order and do not indicate any special limitation on the number of devices in the embodiments of this application, nor do they constitute any limitation on the embodiments of this application.

[0189] 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 electrode implantation device, the electrode implantation device being used to implant an electrode, the electrode comprising a signal transmission module and multiple electrode wires, the signal transmission module being located at the rear end of the electrode wires along their extension direction, characterized in that, The electrode implantation device includes: Multiple implantable components, each corresponding to one of the multiple electrode wires, wherein each implantable component has a first end and a second end along a first direction, and the first end is pre-connected to the front end of the corresponding electrode wire along its extension direction. A fixing component is provided for fixing the plurality of implantable components and the signal transmission module, wherein the plurality of implantable components are located in front of the signal transmission module along a second direction, wherein the second direction is perpendicular to the first direction; The electrode wire includes a first section extending from the front end along the first direction toward the second end, and a second section connecting the first section and the signal transmission module. The spacing between the first fixed position of the implanted component on the fixation component and the second fixed position of the signal transmission module on the fixation component in the second direction is adjustable to adjust the length of the second segment according to the target movement of the implanted component in the first direction; The sum of the lengths of the second segment and the first segment is equal to the length of the electrode wire, wherein the length of the first segment is not less than the target implantation depth of the electrode.

2. The electrode implantation device according to claim 1, characterized in that, The fixing component includes: A first fixing part is used to fix the signal transmission module; The second fixation part is detachably connected to the plurality of implanted components, and the second fixation part is movably connected to the first fixation part and can move relative to the first fixation part in the second direction.

3. The electrode implantation device according to claim 2, characterized in that, The first fixing part includes: ontology; A first locking part is used to apply a force to the body to fix the signal transmission module between the body and the first locking part.

4. The electrode implantation device according to claim 3, characterized in that, The body is provided with a first track, the extension direction of the first track is parallel to the second direction, and the first locking part can move along the first track to adjust the relative position of the second fixed position on the body.

5. The electrode implantation device according to claim 3, characterized in that, The first locking part includes: A base, connected to the body, the base being located above the body along the first direction; A first elastic element extends from the base toward the body in a bent manner, and the bent section of the first elastic element abuts against the body and undergoes elastic deformation.

6. The electrode implantation device according to claim 3, characterized in that, The first locking part includes: A gantry structure is provided on the body. The crossbeam of the gantry structure is located above the body along the first direction and has a non-zero gap with the body. The crossbeam has a first through hole with internal threads along the first direction. A rod portion with external threads is disposed above the body along the first direction, passing through the first through hole. With the cooperation of the internal threads and the external threads, the rod portion can move in a direction away from or towards the body. The second elastic element is disposed at one end of the rod near the body.

7. The electrode implantation device according to claim 2, characterized in that, The second fixing part includes: The bracket is supported on the first fixing part; Multiple fixing rods, each of which is detachably connected to the bracket, the multiple fixing rods corresponding to the multiple implantable components, the implantable components being detachably connected to the corresponding fixing rods.

8. The electrode implantation device according to claim 7, characterized in that, The first fixing part is provided with a first track, the extension direction of the first track is parallel to the second direction, and the bracket can move along the first track to adjust the first fixing position and the relative position of the first fixing part in the second direction.

9. The electrode implantation device according to claim 7, characterized in that, The plurality of fixing rods correspond one-to-one with the plurality of implantable components, or at least two of the implantable components correspond to the same fixing rod; and / or, along the second direction, the connection positions of the plurality of implantable components on their respective corresponding fixing rods are flush or extend in an arc shape.

10. The electrode implantation device according to claim 7, characterized in that, The fixing rod has a second through hole extending along the first direction. The second through hole has an opening that opens toward a third direction. The implanted component can enter or exit the second through hole through the opening. The third direction is perpendicular to the first direction and the second direction.

11. The electrode implantation device according to claim 10, characterized in that, The second fixing part further includes a second locking part, which is movably connected to the fixing rod. The second locking part is used to close or open the opening to limit the implanted component within the second through hole or to release the implanted component.

12. The electrode implantation device according to claim 11, characterized in that, The second locking part includes a baffle plate having a third end and a fourth end opposite to each other. The third end is fixed to the fixing rod by a fastener, and the fourth end is rotatable about the fastener in the first direction to open or close the opening.

13. The electrode implantation device according to claim 12, characterized in that, The fourth end can also elastically deform relative to the third end in the third direction to open or close the opening.

14. The electrode implantation device according to claim 10, characterized in that, The implantation component is provided with a limiting part to restrict the relative movement of the implantation component and the second fixing part located in the second through hole in the first direction.

15. The electrode implantation device according to claim 1, characterized in that, The implantable component includes: An extension rod has a fifth end and a sixth end opposite to each other along the first direction, and the fifth end is provided with a receiving hole; An implantation needle is inserted into the receiving hole and extends outward from the receiving hole, at least a portion of which is pre-connected to the front end of the electrode wire.

16. The electrode implantation device according to claim 15, characterized in that, The extension rod includes a first segment extending from the fifth end along the first direction, and a second segment extending from the first segment in a direction away from the fifth end, the first segment and the second segment having a non-zero included angle, and the receiving hole being opened at the end of the second segment.

17. The electrode implantation device according to claim 15, characterized in that, The electrode wire has an electrode loop at its front end, and at least a portion of the implantation needle passes through the electrode loop beforehand.

18. The electrode implantation device according to claim 17, characterized in that, The implantation needle includes a stop portion for limiting the length of the implantation needle that can pass through the electrode ring.

19. The electrode implantation device according to claim 15, characterized in that, The sixth end is provided with a connecting part for cooperating with an implant head to move the implant component under the drive of the implant head.

20. The electrode implantation device according to claim 1, characterized in that, The first fixed position is closer to the second end than the first end.

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