Electrode fixing device

Abstract

The invention relates to an electrode fixing device. The electrode fixing device is composed of the base, the electrode cap, the lock seat and the clamping piece, the clamping piece is rotationally arranged on the lock seat, the clamping piece is provided with the clamping position and the separating position, and when the clamping position is achieved, the second clamping part on the clamping piece is close to the first clamping part to clamp an electrode; the cantilever arranged on the swing arm abuts against the side wall of the clamping notch to achieve position locking, and the electrode can be firmly clamped. When the clamping electrode needs to be released, only the cantilever needs to be pressed, so that the cantilever elastically deforms downwards, and the cantilever is separated from the side wall of the clamping notch. Therefore, when the electrode fixing device releases the clamped electrode, operation is simple, excessive pressure is not needed, and the clamping pieces are not prone to being integrally disengaged from the rotating shaft.

Description

Technical Field

[0001] This application belongs to the technical field of implantable medical devices, and in particular relates to an electrode fixing device. Background Art

[0002] Deep brain stimulation (DBS) is a widely used clinical neuroregulation method. It applies electrical stimulation to the target nucleus through a nerve stimulator to achieve the effect of treating diseases. It has become the main surgical treatment method for movement disorder diseases (such as Parkinson's disease, dystonia, essential tremor, intractable obsessive-compulsive disorder), and is also a potential treatment method for many neuropsychiatric diseases.

[0003] During the implantation surgery of the patient, the doctor first needs to determine the target position in the patient's brain through a three-dimensional stereotactic device. The doctor makes a small hole in the appropriate skull part of the patient according to the target position, inserts the brain electrode through the skull hole into the brain target. When the doctor uses a test stimulator to test the implanted target, the brain electrode needs to be reliably fixed on the skull using a fixing device.

[0004] Chinese Utility Model Patent Document CN219743688U and Chinese Invention Patent Publication Document CN114652955A both disclose a deep brain stimulation electrode fixing device, both of which are used to fix the electrode in the brain, and both clamp and fix the electrode together with a rotatable clip and a lock seat. To maintain the stability of the fixation, a buckle structure is usually set to maintain the position of the clip. However, in the prior art, when releasing the fixation of the electrode, a large amount of pressure needs to be applied to deform the clip, and finally the clip is disengaged from the buckle connection with the lock seat. The excessive pressure easily causes the clip and the lock seat to be disengaged at the rotating shaft, and the operation is also inconvenient. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide an electrode fixing device that is convenient for releasing the lock between the clip and the lock seat to solve the deficiencies in the prior art.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

[0007] An electrode fixing device, comprising:

[0008] A base, both sides of the base have screw mounting holes, the top of the base is provided with an electrode guiding groove and a card slot, the middle of the base has an electrode hole, and the bottom of the electrode hole has a base platform;

[0009] The electrode cap includes a buckle and an electrode fixing groove provided on the side wall, wherein the buckle is used to cooperate with the buckle groove to fix the electrode cap on the base, and the electrode fixing groove and the electrode wire groove together form a channel for the electrode to pass through and fix the electrode, and the electrode is bent in the electrode fixing device;

[0010] A lock seat, the lock seat is arranged in the electrode hole, including a lock seat body, a lock seat platform and a lock seat buckle arranged on the side wall of the lock seat body, the lock seat platform can be placed in the base platform and the lock seat is clamped on the base through the lock seat buckle, a clamping notch is opened on the lock seat body, a first clamping part is arranged on the lock seat platform at one side of the clamping notch, and a rotating shaft is arranged at the bottom of the lock seat body;

[0011] The clamp is rotatably arranged on the lock seat, and the clamp includes a swing arm, one end of the swing arm has a shaft mounting hole that matches the shaft, and the other end is provided with a protrusion, one side of the swing arm is provided with a limit block and a cantilever, and the other side of the swing arm is a second clamping part, the protrusion abuts against the base platform, and the cantilever abuts against the bottom of the lock seat body, when the clamp is rotated to reach the clamping position, the second clamping part is close to the first clamping part, and the second clamping part and the first clamping part clamp the electrode together, and at the same time, the side surface of the cantilever abuts against the side wall of the clamping notch on the side opposite to the first clamping part; the cantilever is pressed to cause the cantilever to undergo elastic deformation downward, and after the cantilever is separated from the abutment with the side wall of the clamping notch, the clamp can be rotated to reach the disengaged position.

[0012] Preferably, in the electrode fixing device of the present invention, a cantilever accommodating groove is provided at the bottom of the lock seat body, and when the clip reaches the disengaged position, the cantilever can slide into the cantilever accommodating groove.

[0013] Preferably, in the electrode fixing device of the present invention, the distance from the cantilever to the protrusion is smaller than the distance from the cantilever to the shaft mounting hole.

[0014] Preferably, in the electrode fixing device of the present invention, the bottom of the rotating shaft has an enlarged portion, and the enlarged portion is larger than the inner diameter of the rotating shaft mounting hole.

[0015] Preferably, in the electrode fixing device of the present invention, the end of the cantilever has an upwardly tilted portion, and the highest point of the tilted portion is higher than the upper plane of the limit block.

[0016] Preferably, in the electrode fixing device of the present invention, a blind hole is provided on the cantilever.

[0017] Preferably, in the electrode fixing device of the present invention, a plurality of tie bars are provided on the second clamping portion and the first clamping portion.

[0018] Preferably, in the electrode fixing device of the present invention, the height of the second clamping portion extends upward to form a protruding portion, and the protruding portion is higher than the limit block.

[0019] Preferably, in the electrode fixing device of the present invention, the side wall of the electrode hole has internal teeth, and external teeth matching with the internal teeth are arranged on the side wall of the lock seat platform.

[0020] Preferably, in the electrode fixing device of the present invention, a deformation groove is arranged on the lock seat near the position of the lock seat buckle.

[0021] The beneficial effects of the present invention are as follows:

[0022] The electrode fixing device of the present application is composed of a base, an electrode cap, a lock seat and a clip. The clip is rotatably arranged on the lock seat. The clip has a clamping position and a disengaging position. In the clamping position, the second clamping portion on the clip approaches the first clamping portion to clamp the electrode. The position is locked by the cantilever arranged on the swing arm abutting against the side wall of the clamping notch, and the electrode can be firmly clamped. When it is necessary to release the clamped electrode, only need to press the cantilever to make the cantilever elastically deform downward. After the cantilever disengages from the abutment against the side wall of the clamping notch, it can be done. Therefore, the operation of the electrode fixing device of the present application is simple when releasing the clamped electrode, does not require too much pressure, and is not likely to cause the whole clip to disengage from the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technical solutions of the present application will be further described below with reference to the drawings and embodiments.

[0024] Figure 1 is a schematic structural diagram of the electrode fixing device according to an embodiment of the present application;

[0025] Figure 2 is a schematic structural diagram of the base according to an embodiment of the present application;

[0026] Figure 3 is a schematic structural diagram of the electrode cap according to an embodiment of the present application;

[0027] Figure 4 is a schematic structural diagram of the electrode fixing device according to an embodiment of the present application with the electrode cap hidden;

[0028] Figure 5 is a schematic structural diagram of the lock seat according to an embodiment of the present application;

[0029] Figure 6a and Figure 6b is a schematic structural diagram of the clip according to an embodiment of the present application;

[0030] Figure 7a and Figure 7b is a schematic structural diagram of the assembled lock seat and clip according to an embodiment of the present application;

[0031] The reference numerals in the figure are as follows:

[0032] 1 Base;

[0033] 2 Electrode cap;

[0034] 3 Lock seat;

[0035] 4 Clip;

[0036] 10 Screw mounting hole;

[0037] 11 Electrode wire groove;

[0038] 12 Electrode hole;

[0039] 13 Card slot;

[0040] 21 Snap;

[0041] 22 Electrode fixing groove;

[0042] 31 Lock seat body;

[0043] 32 Lock seat platform;

[0044] 33 External teeth;

[0045] 34 Lock seat snap;

[0046] 35 Rotating shaft;

[0047] 36 First clamping part;

[0048] 37 Clamping notch;

[0049] 38 Deformation groove;

[0050] 40 Rotating shaft mounting hole;

[0051] 41 Swing arm;

[0052] 42 Protrusion;

[0053] 43 Cantilever;

[0054] 44 Limit block;

[0055] 45 Second clamping part;

[0056] 121 Base platform;

[0057] 122 Internal teeth;

[0058] 311 Cantilever accommodation groove;

[0059] 361 Rib;

[0060] 432 Tilted part. Detailed implementation mode

[0061] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0062] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0063] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific situations.

[0064] The technical solution of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0065] Embodiment

[0066] This embodiment provides an electrode fixing device, as Figure 1 shown, including:

[0067] A base 1, with screw mounting holes 10 on both sides of the base 1, an electrode guiding groove 11 and a clamping groove 13 opened at the top of the base 1, an electrode hole 12 in the middle of the base 1, and a base platform 121 at the bottom of the electrode hole 12;

[0068] An electrode cap 2, including a buckle 21 and an electrode fixing groove 22 opened on the side wall. The buckle 21 is used to cooperate with the clamping groove 13 to fix the electrode cap 2 on the base 1. The electrode fixing groove 22 and the electrode wire groove 11 together form a channel for the electrode to pass through and fix the electrode, and the electrode is bent inside the electrode fixing device;

[0069] A lock base 3, the lock base 3 is arranged in the electrode hole 12, and includes a lock base body 31, a lock base platform 32 and a lock base buckle 34 arranged on the side wall of the lock base body 31. The lock base platform 32 can be placed in the base platform 121 and the lock base 3 is clamped on the base 1 through the lock base buckle 34. A clamping notch 37 is formed on the lock base body 31. A first clamping portion 36 is arranged on the lock base platform 32 on one side of the clamping notch 37. A rotating shaft 35 is arranged at the bottom of the lock base body 31;

[0070] A clip 4, the clip 4 is rotatably arranged on the lock base 3. The clip 4 includes a swing arm 41. One end of the swing arm 41 has a rotating shaft mounting hole 40 for cooperating with the rotating shaft 35, and the other end is provided with a convex block 42. A limiting block 44 and a cantilever 43 are arranged on one side of the swing arm 41. The other side of the swing arm 41 is a second clamping portion 45. The convex block 42 abuts against the base platform 121, and the cantilever 43 abuts against the bottom of the lock base body 31. When the clip 4 rotates to the clamping position, the second clamping portion 45 approaches the first clamping portion 36, and the second clamping portion 45 and the first clamping portion 36 clamp the electrode together. At the same time, the side surface of the cantilever 43 abuts against the side wall on the side of the clamping notch 37 opposite to the first clamping portion 36; pressing the cantilever 43 causes the cantilever 43 to elastically deform downward. After the cantilever 43 is disengaged from the abutment with the side wall of the clamping notch 37, the clip 4 can rotate to the disengaged position.

[0071] In the height direction, the lock base platform 32 and the lock base buckle 34 are respectively located at the bottom and top of the base platform 121, and the lock base 3 is fixed in the electrode hole 12 of the base 1. The top of the limiting block 44 closely abuts against the bottom wall of the lock base body 31.

[0072] The electrode fixing device of this embodiment is composed of a base 1, an electrode cap 2, a lock base 3 and a clip 4. The clip 4 is rotatably arranged on the lock base 3. The clip 4 has a clamping position and a disengaged position. At the clamping position, the second clamping portion 45 on the clip 4 approaches the first clamping portion 36 to clamp the electrode, and the position is locked by the cantilever 43 arranged on the swing arm 41 abutting against the side wall of the clamping notch 37, and the electrode can be firmly clamped. When it is necessary to release the clamped electrode, only need to press the cantilever 43 to make the cantilever 43 elastically deform downward. After the cantilever 43 is disengaged from the abutment with the side wall of the clamping notch 37, it can be done. Therefore, the operation of the electrode fixing device of this embodiment is simple when releasing the clamped electrode, does not require too much pressure, and is not easy to cause the whole clip 4 to disengage from the rotating shaft.

[0073] Further, a cantilever receiving groove 311 is arranged at the bottom of the lock base body 31. When the clip 4 reaches the disengaged position, the cantilever 43 can slide into the cantilever receiving groove 311.

[0074] Furthermore, the distance between the cantilever 43 and the protrusion 42 is smaller than the distance between the cantilever 43 and the shaft mounting hole 40. That is, the cantilever 43 is closer to the protrusion 42, and when the cantilever 43 is pressed, most of the pressure can be applied to the protrusion 42, thereby reducing the pressure on the shaft 35, so that the shaft 35 is not easy to slip out of the shaft mounting hole 40.

[0075] Furthermore, the bottom of the rotating shaft 35 has an enlarged portion, and the enlarged portion is larger than the inner diameter of the rotating shaft mounting hole 40. The electrode fixing device is made of materials such as PEEK, PSU, PPSU, polyurethane, etc., and has elastic deformation ability. Therefore, when the inner diameter of the enlarged portion and the rotating shaft mounting hole 40 is not much different, the clip 4 can be transferred to the rotating shaft 35 by applying pressure.

[0076] Furthermore, the end of the cantilever 43 has an upwardly tilted portion 432, and the highest point of the tilted portion 432 is higher than the upper plane of the limit block 44. The tilted portion 432 can be pressed against the side wall of the clamping notch 37, and the cantilever receiving groove 311 is an inclined sliding groove corresponding to the tilted portion 432. The inclined portion 432 is provided to facilitate the tilted portion 432 to slide into the inclined cantilever receiving groove 311 when disengaging, making the disengagement smoother.

[0077] Furthermore, a blind hole is provided on the cantilever 43 for a tool to position and press the cantilever 43 , and the tool can apply pressure through the blind hole.

[0078] Furthermore, a plurality of tie bars 361 are provided on the second clamping portion 45 and the first clamping portion 36. The tie bars 361 can strengthen the clamping force when clamping the electrode.

[0079] Furthermore, the height of the second clamping portion 45 extends upward to form a protrusion, and the protrusion is higher than the limit block 44. The protrusion forms a force application point for the operator to operate conveniently, so that the operator can more conveniently rotate the clip 4 to reach the clamping position.

[0080] Furthermore, the side wall of the electrode hole 12 has an inner tooth 122, and the side wall of the lock seat platform 32 is provided with an outer tooth 33 that cooperates with the inner tooth 122. The cooperation between the inner tooth 122 and the outer tooth 33 prevents the lock seat 3 and the base 1 from rotating relative to each other.

[0081] Furthermore, a deformation groove 38 is provided on the lock seat 3 near the lock seat buckle 34. The deformation groove 38 facilitates elastic deformation of the lock seat buckle 34 and facilitates the assembly of the lock seat 3.

[0082] It should be noted that the electrode locking device proposed by the present invention is applicable not only to deep brain stimulation electrode systems, but also to electrode fixation required for nerve stimulation in other similar regions.

[0083] Inspired by the above ideal embodiments based on this application, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this application. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electrode fixing device, characterized in that, include: A base, wherein both sides of the base have screw mounting holes, the top of the base is provided with an electrode guide groove and a clamping groove, the middle of the base has an electrode hole, and the bottom of the electrode hole has a base platform; The electrode cap includes a buckle and an electrode fixing groove provided on the side wall, wherein the buckle is used to cooperate with the buckle groove to fix the electrode cap on the base, and the electrode fixing groove and the electrode wire groove together form a channel for the electrode to pass through and fix the electrode, and the electrode is bent in the electrode fixing device; A lock seat, the lock seat is arranged in the electrode hole, including a lock seat body, a lock seat platform and a lock seat buckle arranged on the side wall of the lock seat body, the lock seat platform can be placed in the base platform and the lock seat is clamped on the base through the lock seat buckle, a clamping notch is opened on the lock seat body, a first clamping part is arranged on the lock seat platform at one side of the clamping notch, and a rotating shaft is arranged at the bottom of the lock seat body; The clamp is rotatably arranged on the lock seat, and the clamp includes a swing arm, one end of the swing arm has a shaft mounting hole that matches the shaft, and the other end is provided with a protrusion, one side of the swing arm is provided with a limit block and a cantilever, and the other side of the swing arm is a second clamping part, the protrusion abuts against the base platform, and the cantilever abuts against the bottom of the lock seat body, when the clamp is rotated to reach the clamping position, the second clamping part is close to the first clamping part, and the second clamping part and the first clamping part clamp the electrode together, and at the same time, the side surface of the cantilever abuts against the side wall of the clamping notch on the side opposite to the first clamping part; the cantilever is pressed to cause the cantilever to undergo elastic deformation downward, and after the cantilever is separated from the abutment with the side wall of the clamping notch, the clamp can be rotated to reach the disengaged position.

2. The electrode fixing device according to claim 1, wherein A cantilever accommodating groove is arranged at the bottom of the lock seat body, and when the clip reaches the disengaged position, the cantilever can slide into the cantilever accommodating groove.

3. The electrode fixing device according to claim 1, wherein, The distance from the cantilever to the protrusion is smaller than the distance from the cantilever to the shaft mounting hole.

4. The electrode fixing device according to claim 1, characterized in that The bottom of the rotating shaft has an enlarged portion, and the enlarged portion is larger than the inner diameter of the rotating shaft mounting hole.

5. The electrode fixing device according to claim 1, characterized in that The end of the cantilever has an upwardly tilted portion, and the highest point of the tilted portion is higher than the upper plane of the limit block.

6. The electrode fixing device according to claim 1, characterized in that, A blind hole is provided on the cantilever.

7. The electrode fixing device according to claim 1, wherein A plurality of tie bars are provided on the second clamping portion and the first clamping portion.

8. The electrode fixing device according to claim 1, characterized in that, The height of the second clamping portion extends upward to form a protrusion, and the protrusion is higher than the limiting block.

9. The electrode fixing device according to claim 1, characterized in that, The side wall of the electrode hole is provided with inner teeth, and the side wall of the lock seat platform is provided with outer teeth matching with the inner teeth.

10. The electrode fixing device according to claim 1, characterized in that, A deformation groove is arranged on the lock seat near the lock seat buckle position.

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