CN-117426843-B - Electrode implantation device

Abstract

An electrode implantation device comprises a plurality of implantation components, a fixing component, an electrode wire, a first section and a second section, wherein the implantation components are in one-to-one correspondence with a plurality of electrode wires, each implantation component is provided with a first end and a second end which are opposite along a first direction, the first ends are connected with the front ends of the corresponding electrode wires in advance, the fixing component is used for fixing the implantation components and the signal transmission module, the implantation components are positioned in front of the signal transmission module along a second direction, the second direction is perpendicular to the first direction, the electrode wires comprise a first section extending from the front ends towards the second ends along the first direction, the second section is connected with the first section and the signal transmission module, and the distance between a first fixing position of the implantation components on the fixing component and a second fixing position of the signal transmission module on the fixing component in the second direction is adjustable so as to adjust the length of the second section according to the target movement amount of the implantation components in the first direction. According to the scheme, the suspension part of the electrode wire can be in a natural straightening state, so that the electrode wire is prevented from being wound with each other, and the implantation efficiency of the electrode wire is improved.

Inventors

• JI SIJIE
• ZHANG SHIQIANG

Assignees

• 上海阶梯医疗科技有限公司

Dates

Publication Date

20260508

Application Date

20231020

Claims (20)

1. 1. An electrode implantation device for implanting an electrode, the electrode comprising a signal transmission module and a plurality of electrode wires, the signal transmission module being located at a rear end of the electrode wires along an extension direction thereof, the electrode implantation device comprising: the electrode wires are connected with the first end of the electrode wire in a corresponding mode, and the first end of the electrode wire is connected with the second end of the electrode wire in a corresponding mode; The fixing assembly is used for fixing the plurality of implant assemblies and the signal transmission module, and the plurality of implant assemblies are positioned in front of the signal transmission module along a second direction, wherein the second direction is perpendicular to the first direction; Wherein the wire electrode comprises a first section extending from the front end along the first direction towards the second end, and a second section connecting the first section and the signal transmission module; The distance between a first fixed position of the implant assembly on the fixed assembly and a second fixed position of the signal transmission module on the fixed assembly in the second direction is adjustable, so that the length of the second section is adjusted according to the target movement amount of the implant assembly in the first direction; The sum of the lengths of the second section and the first section is equal to the length of the wire electrode, wherein the length of the first section is not less than the target implantation depth of the electrode.
2. 2. The electrode implantation device of claim 1, wherein the fixation assembly comprises: The first fixing part is used for fixing the signal transmission module; The implant assembly comprises a first fixing part, a second fixing part and a plurality of implant assemblies, wherein the implant assemblies are respectively detachably connected to the first fixing part, and the second fixing part is movably connected to the first fixing part and can move in the first direction relative to the first fixing part.
3. 3. The electrode implant device of claim 2, wherein the first fixation portion comprises: A body; And the first locking part is used for applying a force to the body so as to fix the signal transmission module between the body and the first locking part.
4. 4. An electrode implant device according to claim 3, wherein the body is provided with a first track, the first track extending in a direction parallel to the second direction, the first locking portion being movable along the first track to adjust the relative position of the second fixed position on the body.
5. 5. The electrode implant device of claim 3, wherein the first locking portion comprises: A base connected to the body, the base being located above the body in the first direction; the first elastic piece is bent and extended from the base part towards the body, and the bending section of the first elastic piece is propped against the body and is elastically deformed.
6. 6. The electrode implant device of claim 3, wherein the first locking portion comprises: The gantry structure is arranged on the body, a cross beam of the gantry structure is positioned above the body along the first direction and has a non-zero gap with the body, and a first through hole with internal threads is formed in the cross beam along the first direction; a rod portion having an external thread, the rod portion being disposed above the body in the first direction through the first through hole, the rod portion being movable in a direction away from or toward the body under the cooperation of the internal thread and the external thread; The second elastic piece is arranged at one end of the rod part, which is close to the body.
7. 7. The electrode implant device of claim 2, wherein the second fixation portion comprises: A bracket supported by the first fixing portion; The fixing rods are detachably connected to the support, the fixing rods correspond to the implanting components, and the implanting components are detachably connected to the corresponding fixing rods.
8. 8. The electrode implantation device according to claim 7, wherein the first fixing portion is provided with a first rail, an extending direction of the first rail is parallel to the second direction, and the holder is movable along the first rail to adjust a relative position of the first fixing portion and the first fixing portion in the second direction.
9. 9. The electrode implant device of claim 7, wherein the plurality of fixation bars and the plurality of implant components are in one-to-one correspondence or at least two of the implant components correspond to the same fixation bar, and/or wherein the connection locations of the plurality of implant components on the respective fixation bars in the second direction are flush or arc-shaped.
10. 10. The electrode implant device of claim 7, wherein the fixation rod is provided with a second through hole extending in the first direction, the second through hole having an opening that is open toward a third direction, the implant assembly being capable of entering or exiting the second through hole from the opening, the third direction being perpendicular to the first and second directions.
11. 11. The electrode implant device of claim 10, wherein the second securing portion further comprises a second locking portion movably coupled to the securing rod, the second locking portion for closing or opening the opening to retain the implant assembly within the second through hole or to release the implant assembly.
12. 12. The electrode implant device of claim 11, wherein the second locking portion comprises a flap having opposed third and fourth ends, the third end being secured to the fixation rod by a fastener, the fourth end being rotatable about the fastener in the first direction to open or close the opening.
13. 13. The electrode implant device of claim 12, wherein the fourth end is further elastically deformable in the third direction relative to the third end to open or close the opening.
14. 14. The electrode implant device of claim 10, wherein the implant assembly is provided with a stop for limiting relative movement of the implant assembly and the second fixation portion in the first direction within the second through hole.
15. 15. The electrode implant device of claim 1, wherein the implant assembly comprises: The extending rod is provided with a fifth end and a sixth end which are opposite 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 outwards from the receiving hole, and at least one part of the implantation needle is connected with the front end of the electrode wire in advance.
16. 16. The electrode implant device of claim 15, wherein the projecting rod includes a first segment extending from the fifth end in 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, the receiving aperture opening at a distal end of the second segment.
17. 17. The electrode implant device of claim 15, wherein the front end of the wire electrode has an electrode ring through which at least a portion of the implant needle passes in advance.
18. 18. The electrode implant device of claim 17, wherein the implant needle includes a stop for limiting the length of the electrode ring through which the implant needle can pass.
19. 19. The electrode implant device of claim 15, wherein the sixth end is provided with a connection portion for cooperating with an implant head to move the implant assembly under the drive of the implant head.
20. 20. The electrode implantation device of claim 1, wherein the first fixed position is closer to the second end than the first end.

Description

Electrode implantation device Technical Field The invention relates to the technical field of electrode implantation, in particular to an electrode implantation device. Background Based on the excellent mechanical compatibility of the electrode wire, scars are not easy to form in brain tissues or rejection reactions are not easy to generate, the damage of electrode implantation operation to the brain tissues can be effectively reduced, and implantation robots capable of rapidly implanting the electrode wire into biological tissues (such as brain) to acquire physiological electrical signals are currently being developed in the field of brain-computer interfaces. The technology aims at implanting electrode wires into brain tissue rapidly and densely within the brain windowing time. The general method of implanting the electrode wire into brain tissue is to implant the electrode wire into brain tissue with the implantation needle. However, in the present stage, when a plurality of electrode wires are implanted into brain tissue, an implantation needle (currently, a tungsten needle is used mostly) on an implantation head of an implantation robot is required to pass through electrode rings at the front ends of 1 electrode wire, after the success of ring penetration is confirmed visually, the implantation needle is moved to drive the electrode wires to implant the 1 st electrode wire into the brain tissue, then the implantation needle is moved to retract to an initial position, then the tungsten needle is moved to pass through electrode rings on the 2 nd electrode wire continuously, after the success of ring penetration is confirmed visually, the 2 nd electrode wire is implanted into the brain tissue by using the tungsten needle, and the n electrode wires are sequentially implanted. Because the existing electrode wire implantation is repeatedly used by the same implantation needle, after the previous electrode wire is implanted, the same implantation needle is used for repeatedly threading the needle, and then the next electrode wire is implanted. For each wire implant, the operation of the implant needle through the electrode ring is required during surgery. In addition, since the electrode wire itself is very thin, the electrode ring is very small, and the diameter is usually about 20 micrometers (um), so that it takes a long time to insert n electrode wires, and the time taken to insert n electrode wires is correspondingly n times, regardless of whether the ring is to be inserted under automatic image recognition or manually. Thus, there is a significant risk of infection during the time that the brain tissue is windowed, due to this n-fold time. On the other hand, since there is uncertainty in the internal environment of the brain tissue in which the wire electrode is implanted, the implant needle may be damaged during the operation of implanting the wire electrode, for example, the brain tissue may bend the tip of the implant needle, so that it is difficult to implant all of the n wire electrodes into the brain tissue by only one implant needle without replacing the implant needle. Thus, when the implantation needle is damaged during the implantation operation, the operation of replacing the implantation needle needs to be increased, and the replacement of the implantation needle takes longer, so that the risk of infection in the operation is increased again. Disclosure of Invention The invention solves the technical problem of how to improve the implantation efficiency of the electrode wire. In order to solve the technical problems, the embodiment of the invention provides an electrode implantation device, wherein the electrode comprises a signal transmission module and a plurality of electrode wires, the signal transmission module is positioned at the rear end of the electrode wires along the extending direction of the electrode wires, the electrode implantation device comprises a plurality of implantation assemblies, the implantation assemblies are in one-to-one correspondence with the electrode wires, each implantation assembly is provided with a first end and a second end which are opposite, the first end is connected with the front end of the corresponding electrode wire along the extending direction of the electrode wires in advance, a fixing assembly is used for fixing the implantation assemblies and the signal transmission module, the implantation assemblies are positioned in front of the signal transmission module along a second direction, the second direction is perpendicular to the first direction, the electrode wires comprise a first section extending from the front end along the first direction towards the second end, the second section is connected with the first section, the signal transmission module is fixed on the first section, the implantation assembly is fixed at a first position of the implantation assembly and the second section along the first direction, and the distance between the