An electrode fixing device

Abstract

This application relates to an electrode fixing device. The electrode fixing device comprises a base, an electrode cap, a locking seat, and a clamping plate. The clamping plate is rotatably mounted on the locking seat and has a clamping position and a disengaged position. In the clamping position, a second clamping part on the clamping plate clamps the electrode close to the first clamping part. Position locking is achieved by a cantilever on a swing arm abutting against the side wall of the clamping notch, thus firmly clamping the electrode. When it is necessary to release the clamped electrode, simply press the cantilever, causing it to elastically deform downwards, disengaging from the side wall of the clamping notch. Therefore, the electrode fixing device of this application is simple to operate when releasing the clamped electrode, requiring no excessive pressure and preventing the clamping plate from easily detaching from the pivot.

Description

Technical Field

[0001] This application belongs to the field of implantable medical device technology, and in particular relates to an electrode fixation device. Background Technology

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

[0003] During the implantation surgery, the doctor first uses a three-dimensional positioning device to determine the location of the target point in the patient's brain. Based on the target point location, the doctor makes a small hole in the appropriate part of the patient's skull and inserts the brain electrode into the target point through the skull hole. When the doctor uses a test stimulator to test the implanted target point, the brain electrode needs to be reliably fixed to the skull using a fixation 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 used to fix electrodes to the brain. Both devices use rotating clips and a locking seat to hold and fix the electrodes. To maintain stability, a snap-fit ​​structure is usually used to hold the clips in place. However, in the prior art, releasing the electrodes requires applying significant pressure to deform the clips, eventually causing them to disengage from the locking seat. Excessive pressure can easily cause the clips to detach from the locking seat at the pivot point, 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 facilitates the release of the locking between the clip and the locking seat, in order to overcome the shortcomings of the prior art.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] An electrode fixing device, comprising:

[0008] The base has mounting holes on both sides, an electrode guide groove and a slot on the top of the base, an electrode hole in the middle of the base, a base platform at the bottom of the electrode hole, and screws installed in the mounting holes;

[0009] The electrode cap includes a snap fastener and an electrode fixing groove formed on the side wall. The snap fastener is used to cooperate with the groove to fix the electrode cap on the base. The electrode fixing groove and the electrode wire groove together form a channel for the electrode to pass through and fix the electrode. The electrode is bent within the electrode fixing device.

[0010] A lock seat is disposed in the electrode hole and includes a lock seat body, a lock seat platform and a lock seat buckle disposed 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 locked onto the base by the lock seat buckle. A clamping notch is provided on the lock seat body. A first clamping part is provided on the lock seat platform on one side of the clamping notch. A rotating shaft is provided at the bottom of the lock seat body.

[0011] A clamping piece is rotatably mounted on the lock seat. The clamping piece includes a swing arm, one end of which has a rotating shaft mounting hole that mates with the rotating shaft, and the other end has a protrusion. A limit block and a cantilever are provided on one side of the swing arm, and a second clamping part is provided on the other side of the swing arm. The protrusion abuts against the base platform, and the cantilever abuts against the bottom of the lock seat body. When the clamping piece rotates to the clamping position, the second clamping part approaches the first clamping part, and the second clamping part and the first clamping part together clamp the electrode. At the same time, the side of the cantilever abuts against the side wall of the clamping notch on the side opposite to the first clamping part. Pressing the cantilever causes it to elastically deform downward. After the cantilever disengages from the side wall of the clamping notch, the clamping piece can rotate to the disengagement position.

[0012] Preferably, in the electrode fixing device of the present invention, the bottom of the lock seat body is provided with a cantilever receiving groove, and when the clamp reaches the disengagement position, the cantilever can slide into the cantilever receiving groove.

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

[0014] Preferably, in the electrode fixing device of the present invention, the bottom of the rotating shaft has an enlarged portion, the enlarged portion being 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 curved inclined portion, the highest point of which is higher than the upper plane of the limiting 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, the second clamping part and the first clamping part are provided with a plurality of braces.

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

[0019] Preferably, in the electrode fixing device of the present invention, the sidewall of the electrode hole has internal teeth, and the sidewall of the lock seat platform is provided with external teeth that cooperate with the internal teeth.

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

[0021] The beneficial effects of this invention are:

[0022] The electrode fixing device of this application consists of a base, an electrode cap, a locking seat, and a clamping plate. The clamping plate is rotatably mounted on the locking seat and has a clamping position and a disengaged position. In the clamping position, the second clamping part on the clamping plate clamps the electrode close to the first clamping part. The position is locked by the cantilever on the swing arm abutting against the side wall of the clamping notch, which can firmly clamp the electrode. When it is necessary to release the clamped electrode, simply press the cantilever to cause it to elastically deform downwards, and the cantilever will disengage from the side wall of the clamping notch. Therefore, the electrode fixing device of this application is simple to operate when releasing the clamped electrode, requires no excessive pressure, and is less likely to cause the clamping plate to detach from the pivot. Attached Figure Description

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

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

[0025] Figure 2 This is a schematic diagram of the structure of the base according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the electrode cap structure according to an embodiment of this application;

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

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

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

[0030] Figure 7a and Figure 7b This is a schematic diagram of the structure of the lock base and clamping plate after assembly according to an embodiment of this application;

[0031] The attached figures are labeled as follows:

[0032] 1. Base;

[0033] 2. Electrode caps;

[0034] 3. Lock base;

[0035] 4 clips;

[0036] 10 mounting holes;

[0037] 11. Electrode wire groove;

[0038] 12 electrode holes;

[0039] 13 Card slots;

[0040] 21. Buckle;

[0041] 22. Electrode fixing groove;

[0042] 31 Lock seat body;

[0043] 32 Locking platform;

[0044] 33 External teeth;

[0045] 34 Lock seat latch;

[0046] 35 swivels;

[0047] 36 First clamping part;

[0048] 37. Clamping notch;

[0049] 38. Deformation groove;

[0050] 40 swivel mounting holes;

[0051] 41. Swing arm;

[0052] 42 bumps;

[0053] 43. Cantilever;

[0054] 44 Limit blocks;

[0055] 45 Second clamping part;

[0056] 121 Base platform;

[0057] 122 Internal teeth;

[0058] 311 Cantilever receiving groove;

[0059] 361. Leggings;

[0060] 432 Inclined section. Detailed Implementation

[0061] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0062] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0065] Example

[0066] This embodiment provides an electrode fixing device, such as... Figure 1 As shown, it includes:

[0067] The base 1 has mounting holes 10 on both sides, an electrode guide groove 11 and a slot 13 on the top of the base 1, an electrode hole 12 in the middle of the base 1, a base platform 121 at the bottom of the electrode hole 12, and a screw in the mounting hole 10, which can fix the base 1 to the bone.

[0068] Electrode cap 2 includes a buckle 21 and an electrode fixing groove 22 formed on the side wall. The buckle 21 is used to cooperate with the 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. The electrode is bent in the electrode fixing device.

[0069] The lock seat 3 is disposed in the electrode hole 12 and includes a lock seat body 31, a lock seat platform 32 and a lock seat buckle 34 disposed on the side wall of the lock seat body 31. The lock seat platform 32 can be placed in the base platform 121 and the lock seat 3 is locked onto the base 1 by the lock seat buckle 34. The lock seat body 31 has a clamping notch 37. The lock seat platform 32 has a first clamping part 36 disposed on one side of the clamping notch 37. The bottom of the lock seat body 31 has a rotating shaft 35.

[0070] A clamping piece 4 is rotatably mounted on the lock seat 3. The clamping piece 4 includes a swing arm 41. One end of the swing arm 41 has a rotating shaft mounting hole 40 that mates with the rotating shaft 35, and the other end has a protrusion 42. A limit block 44 and a cantilever 43 are provided on one side of the swing arm 41, and a second clamping part 45 is located on the other side. The protrusion 42 abuts against the base platform 121, and the cantilever 43 abuts against the bottom of the lock seat body 31. The clamping piece 4 rotates to... When the clamping position is reached, the second clamping part 45 approaches the first clamping part 36, and the second clamping part 45 and the first clamping part 36 together clamp the electrode. At the same time, the side of the cantilever 43 abuts against the side wall of the clamping notch 37 on the side opposite to the first clamping part 36. Pressing the cantilever 43 causes the cantilever 43 to undergo elastic deformation downward. After the cantilever 43 disengages from the side wall of the clamping notch 37, the clamping piece 4 can rotate to reach the disengagement position.

[0071] In the vertical direction, the lock seat platform 32 and the lock seat buckle 34 are located at the bottom and top of the base platform 121, respectively, fixing the lock seat 3 inside the electrode hole 12 of the base 1. The top of the limiting block 44 is in close contact with the bottom wall of the lock seat body 31.

[0072] The electrode fixing device of this embodiment consists of a base 1, an electrode cap 2, a locking seat 3, and a clamping piece 4. The clamping piece 4 is rotatably mounted on the locking seat 3 and has a clamping position and a disengaging position. In the clamping position, the second clamping part 45 on the clamping piece 4 clamps the electrode close to the first clamping part 36. The position is locked by the cantilever 43 on the swing arm 41 abutting against the side wall of the clamping notch 37, which can firmly clamp the electrode. When it is necessary to release the clamped electrode, simply press the cantilever 43 to cause it to elastically deform downwards, and the cantilever 43 will disengage from the side wall of the clamping notch 37. Therefore, the electrode fixing device of this embodiment is simple to operate when releasing the clamped electrode, does not require excessive pressure, and is not likely to cause the clamping piece 4 to detach from the pivot.

[0073] Furthermore, the bottom of the lock seat body 31 is provided with a cantilever receiving groove 311, so that when the clamping piece 4 reaches the disengagement position, the cantilever 43 can slide into the cantilever receiving groove 311.

[0074] Furthermore, the distance from the cantilever 43 to the protrusion 42 is less than the distance from the cantilever 43 to the pivot mounting hole 40. That is, the cantilever 43 is closer to the protrusion 42, so when the cantilever 43 is pressed, most of the pressure can be applied to the protrusion 42, reducing the pressure on the pivot 35, thus making it less likely for the pivot 35 to slip out of the pivot mounting hole 40.

[0075] Furthermore, the bottom of the rotating shaft 35 has an enlarged portion, which 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, and polyurethane, and has elastic deformation capability. Therefore, when the enlarged portion and the inner diameter of the rotating shaft mounting hole 40 are not significantly different, pressure can be applied to rotate the clamp 4 onto the rotating shaft 35.

[0076] Furthermore, the end of the cantilever 43 has an upwardly curved inclined portion 432, the highest point of which is higher than the upper plane of the limiting block 44. This allows the inclined portion 432 to abut against the side wall of the clamping notch 37, and the cantilever receiving groove 311 is an inclined sliding groove corresponding to the inclined portion 432. The inclined portion 432 facilitates its sliding into the inclined cantilever receiving groove 311 during disengagement, making disengagement smoother.

[0077] Furthermore, a blind hole is provided on the cantilever 43 to allow the tool to position and press the cantilever 43, and the blind hole facilitates the application of pressure by the tool.

[0078] Furthermore, the second clamping part 45 and the first clamping part 36 are provided with a plurality of reinforcing bars 361. The reinforcing bars 361 can enhance the clamping force when clamping the electrode.

[0079] Furthermore, the second clamping portion 45 extends upward to form a protrusion, which is higher than the limiting block 44. The protrusion forms a force application point for convenient operation by the operator, making it easier for the operator to rotate the clamping piece 4 to reach the clamping position.

[0080] Furthermore, the sidewall of the electrode hole 12 has internal teeth 122, and the sidewall of the lock seat platform 32 is provided with external teeth 33 that cooperate with the internal teeth 122. The cooperation between the internal teeth 122 and the external teeth 33 prevents relative rotation between the lock seat 3 and the base 1.

[0081] Furthermore, a deformation groove 38 is provided on the lock base 3 near the lock base buckle 34. The deformation groove 38 facilitates elastic deformation at the lock base buckle 34, making it easier to assemble the lock base 3.

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

[0083] Based on the above-described preferred embodiments according to this application, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An electrode fixing device, characterized in that, include: The base has mounting holes, an electrode guide groove and a slot at the top, an electrode hole in the middle, a base platform at the bottom of the electrode hole, and screws inside the mounting holes. The electrode cap includes a snap fastener and an electrode fixing groove formed on the side wall. The snap fastener is used to cooperate with the groove to fix the electrode cap on the base. The electrode fixing groove and the electrode wire groove together form a channel for the electrode to pass through and fix the electrode. The electrode is bent within the electrode fixing device. A lock seat is disposed in the electrode hole and includes a lock seat body, a lock seat platform and a lock seat buckle disposed 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 locked onto the base by the lock seat buckle. A clamping notch is provided on the lock seat body. A first clamping part is provided on the lock seat platform on one side of the clamping notch. A rotating shaft is provided at the bottom of the lock seat body. A clamping piece is rotatably mounted on the lock seat. The clamping piece includes a swing arm, one end of which has a rotating shaft mounting hole that mates with the rotating shaft, and the other end has a protrusion. A limit block and a cantilever are provided on one side of the swing arm, and a second clamping part is provided on the other side of the swing arm. The protrusion abuts against the base platform, and the cantilever abuts against the bottom of the lock seat body. When the clamping piece rotates to the clamping position, the second clamping part approaches the first clamping part, and the second clamping part and the first clamping part together clamp the electrode. At the same time, the side of the cantilever abuts against the side wall of the clamping notch on the side opposite to the first clamping part. Pressing the cantilever causes it to elastically deform downward. After the cantilever disengages from the side wall of the clamping notch, the clamping piece can rotate to the disengagement position.

2. The electrode fixing device according to claim 1, characterized in that, The bottom of the lock seat body is provided with a cantilever receiving groove. When the clamp reaches the disengagement position, the cantilever can slide into the cantilever receiving groove.

3. The electrode fixing device according to claim 1, characterized in that, The distance from the cantilever to the protrusion is less 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 shaft has an enlarged portion, which is larger than the inner diameter of the shaft mounting hole.

5. The electrode fixing device according to claim 1, characterized in that, The end of the cantilever has an upward-curving inclined portion, the highest point of which is higher than the upper plane of the limiting block.

6. The electrode fixing device according to claim 1, characterized in that, The cantilever has blind holes.

7. The electrode fixing device according to claim 1, characterized in that, The second clamping part and the first clamping part are provided with a plurality of reinforcing bars.

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

9. The electrode fixing device according to claim 1, characterized in that, The electrode hole sidewall has internal teeth, and the lock seat platform sidewall is provided with external teeth that cooperate with the internal teeth.

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

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