Electrode buffering piece and intracranial electrode fixing device

Abstract

The utility model discloses an electrode buffering piece and an intracranial electrode fixing device. The electrode buffering piece is used in the intracranial electrode fixing device, and comprises a base which is used for being detachably connected with a skull hole seat which can be mounted at a skull hole; the electrode connecting base is used for being connected with an intracranial electrode, the electrode connecting base is movably connected with the base, and the electrode connecting base has a preset movement range relative to the base. According to the electrode buffering piece, after the electrode connecting base of the electrode buffering piece clamps the intracranial electrode and is installed on the cranial hole base along with the base, when the head of a patient conducts some activities, the electrode buffering piece allows the intracranial electrode to conduct tiny activities relative to the cranial hole base, and therefore the intracranial electrode is prevented from being damaged. Therefore, the part, extending into the cranium, of the intracranial electrode is prevented from being bent when the head of the patient performs some activities, and the use reliability of the intracranial electrode is ensured.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to an electrode buffer and an intracranial electrode fixing device. Background Art

[0002] The deep brain stimulation system belongs to a kind of implantable nerve stimulation system, and mainly delivers pulse signals to the target position in the skull through intracranial electrodes placed in the skull.

[0003] At present, the intracranial electrode is fixed on the patient's head through an intracranial electrode fixing device. The intracranial electrode fixing device includes a cranial hole seat and an electrode clamping member. The cranial hole seat is installed at the cranial hole, and the electrode clamping member clamps the intracranial electrode and is installed on the cranial hole seat. In the prior art, after the electrode clamping member clamps the intracranial electrode and is connected to the cranial hole seat, the whole structure is a completely rigid connection structure, and there is no play between the intracranial electrode and the electrode fixing device. However, when the patient's head moves, the intracranial electrode needs to have a small amount of play with the cranial hole seat. Under the above completely rigid connection structure, it is easy to cause the part of the intracranial electrode extending into the skull to bend. Summary of the Utility Model

[0004] The utility model provides an electrode buffer and an intracranial electrode fixing device. The electrode buffer provides a certain amount of play for the intracranial electrode, thereby generating a buffering effect, and can solve the problem that the part of the intracranial electrode extending into the skull is easily bent.

[0005] In a first aspect, an embodiment of the utility model provides an electrode buffer for an intracranial electrode fixing device. The electrode buffer includes: a base for detachably connecting with a cranial hole seat capable of being installed at a cranial hole; an electrode connection seat for connecting the intracranial electrode. The electrode connection seat is movably connected to the base, and the electrode connection seat has a preset range of movement relative to the base.

[0006] An electrode buffer according to an embodiment of the present utility model includes a base and an electrode connection seat. The base is used for detachably connecting with a cranial hole seat that can be installed at a cranial hole. The electrode connection seat is used for connecting an intracranial electrode. The electrode connection seat is movably connected to the base, and the electrode connection seat has a preset range of movement relative to the base. Therefore, when the electrode connection seat of the electrode buffer connects the intracranial electrode and is installed on the cranial hole seat along with the base, when the patient's head makes some movements, the electrode buffer allows the intracranial electrode to make a small movement relative to the cranial hole seat, thereby avoiding the bending of the part of the intracranial electrode extending into the skull when the patient's head makes some movements, and ensuring the reliability of use of the intracranial electrode. Due to the buffering effect provided by the electrode buffer, the change in the curvature of the intracranial electrode near the cranial hole seat in the active state can be greatly reduced, and the bending force received by the intracranial electrode at the electrode connection seat can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connection seat, preventing the intracranial electrode from cracking and breaking, and ensuring the normal operation and service life of the intracranial electrode.

[0007] According to the foregoing embodiment of the first aspect of the present utility model, the electrode buffer further includes: a movable connecting member that movably connects the electrode connection seat to the base, and the movable connecting member limits the range of movement of the electrode connection seat relative to the base.

[0008] According to any one of the foregoing embodiments of the first aspect of the present utility model, a plurality of the movable connecting members are provided and are evenly distributed on the outer peripheral side of the electrode connection seat.

[0009] According to any one of the foregoing embodiments of the first aspect of the present utility model, at least a part of the structure of the base is a ring structure, there is a movable gap between the outer peripheral side wall of the electrode connection seat and the inner peripheral side wall of the base, and the movable connecting member is connected between the outer peripheral side wall of the electrode connection seat and the inner peripheral side wall of the base, and each of the movable connecting members is an elastic member.

[0010] According to any one of the foregoing embodiments of the first aspect of the present utility model, the movable connecting member is integrally formed with at least one of the electrode connection seat and the base, and each of the movable connecting members is an elastic member that bends and extends.

[0011] According to any one of the foregoing embodiments of the first aspect of the present utility model, the base includes a connection disk, the electrode connection seat is connected to the connection disk through a plurality of the movable connecting members, and a first through hole for the intracranial electrode to pass through is provided in the center of the connection disk.

[0012] According to any one of the foregoing embodiments of the first aspect of the present utility model, each of the movable connecting members includes a chute provided on the connection disk and a sliding column provided on the electrode connection seat and slidably matched with the chute.

[0013] According to any of the foregoing embodiments of the first aspect of the present utility model, each of the sliding grooves extends along the radial direction of the connection disk.

[0014] According to any of the foregoing embodiments of the first aspect of the present utility model, the connection disk includes opposite first and second surfaces. The electrode connection seat is located on the side where the first surface is located. The sliding groove penetrates from the first surface to the second surface. Each of the movable connectors further includes a locking member. The sliding column passes through the sliding groove, and the locking member is connected to the end of the sliding column away from the electrode connection seat on the side where the second surface is located. The width of the locking member is greater than the width of the sliding groove.

[0015] In a second aspect, an embodiment of the present utility model provides an intracranial electrode fixing device, which includes: a cranial hole seat that can be installed at a cranial hole; and an electrode buffer member according to any of the foregoing embodiments of the first aspect of the present utility model, and the electrode buffer member is detachably connected to the cranial hole seat.

[0016] The intracranial electrode fixing device according to the embodiment of the present utility model includes an electrode buffer member and a cranial hole seat, and the electrode buffer member is detachably connected to the cranial hole seat. The electrode buffer member includes a base and an electrode connection seat. The base is used for detachably connecting to the cranial hole seat, and the electrode connection seat is used for connecting an intracranial electrode. The electrode connection seat is movably connected to the base, and the electrode connection seat has a preset activity range relative to the base. Therefore, when the electrode connection seat of the electrode buffer member connects the intracranial electrode and is installed on the cranial hole seat along with the base, when the patient's head moves, the electrode buffer member allows the intracranial electrode to move slightly relative to the cranial hole seat, thereby avoiding bending of the part of the intracranial electrode extending into the skull when the patient's head moves, and ensuring the use reliability of the intracranial electrode. Due to the buffering effect provided by the electrode buffer member, the change in the curvature of the intracranial electrode near the intracranial electrode fixing device in the active state can be greatly reduced, and the bending force received by the intracranial electrode at the electrode connection seat can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connection seat, preventing the intracranial electrode from cracking and breaking, and ensuring the normal operation and service life of the intracranial electrode.

[0017] According to any of the foregoing embodiments of the second aspect of the present utility model, the cranial hole seat includes an installation portion and a fixing portion. The installation portion is tubular and is used for detachably connecting to the electrode buffer member. The fixing portion is provided on the outer periphery of the installation portion, and the fixing portion is used for connecting to the skull.

[0018] According to any of the foregoing embodiments of the second aspect of the present utility model, the fixing portion includes at least one groove. Each groove communicates with the inner side of the installation portion and extends to the outer peripheral side of the fixing portion, and the intracranial electrode can pass through the groove.

[0019] According to any of the foregoing embodiments of the second aspect of the present utility model, the intracranial electrode fixing device further includes: a cranial hole cover, which can be detachably covered on the cranial hole seat, so that the electrode buffer member is clamped between the cranial hole cover and the cranial hole seat.

[0020] In a third aspect, an embodiment of the present utility model provides an electrode buffer member, which includes: a base for detachably connecting to the skull; an electrode connecting seat, which is hermetically and movably connected to the base, and the electrode connecting seat is used for connecting an intracranial electrode; the electrode connecting seat is configured to be able to move relative to the base in at least one direction and has a preset range of movement.

[0021] For the electrode buffer member according to the embodiment of the present utility model, it includes a base and an electrode connecting seat. The base is used for detachably connecting to the skull, the electrode connecting seat is used for connecting the intracranial electrode, the electrode connecting seat is hermetically and movably connected to the base, and the electrode connecting seat is configured to be able to move relative to the base in at least one direction and has a preset range of movement. Therefore, when the electrode connecting seat of the electrode buffer member connects the intracranial electrode and is installed on the skull along with the base, when the patient's head makes some movements, the electrode buffer member allows the intracranial electrode to move slightly relative to the base, thereby avoiding the part of the intracranial electrode extending into the intracranial cavity from being bent when the patient's head makes some movements, and ensuring the reliability of the use of the intracranial electrode. Due to the buffering effect provided by the electrode buffer member, the change in the curvature of the intracranial electrode in the active state can be greatly reduced, and the bending force received by the intracranial electrode at the electrode connecting seat can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connecting seat, preventing the intracranial electrode from cracking and breaking, and ensuring the normal operation and service life of the intracranial electrode. In this embodiment, the electrode buffer member can be directly connected to the skull, no longer relying on the cranial hole seat, the structure is more compact, and the volume occupied by the intracranial electrode-related fixing structure on the skull is reduced.

[0022] According to the foregoing embodiment of the third aspect of the present utility model, the electrode buffer member further includes: a movable connecting member, which hermetically and movably connects the electrode connecting seat and the base, and the movable connecting member limits the range of movement of the electrode connecting seat relative to the base.

[0023] According to any of the foregoing embodiments of the third aspect of the present utility model, the base has a second through hole, and the second through hole is coaxially arranged with the cranial hole of the skull, and the intracranial electrode penetrates through the second through hole and the cranial hole of the skull.

[0024] According to any of the foregoing embodiments of the third aspect of the present utility model, the surface of the electrode connecting seat away from the skull is flush with the surface of the base away from the skull; or the surface of the electrode connecting seat away from the skull is recessed relative to the surface of the base away from the skull.

[0025] According to any of the foregoing embodiments of the third aspect of the present utility model, the surface of the electrode connection seat away from the skull protrudes relative to the surface of the base away from the skull.

[0026] In a fourth aspect, an intracranial electrode fixing device according to an embodiment of the present utility model includes an electrode buffer according to any of the foregoing embodiments of the third aspect of the present utility model, and the base of the electrode buffer is connected to a skull hole.

[0027] The intracranial electrode fixing device according to an embodiment of the present utility model includes an electrode buffer, and the base of the electrode buffer is connected to a skull hole. The electrode buffer includes a base and an electrode connection seat. The base is used for detachably connecting to the skull, and the electrode connection seat is used for connecting an intracranial electrode. The electrode connection seat is hermetically and movably connected to the base, and the electrode connection seat is configured to be able to move along at least one direction relative to the base and have a preset movement range. Therefore, when the electrode connection seat of the electrode buffer connects the intracranial electrode and is installed on the skull along with the base, when the patient's head makes some movements, the electrode buffer allows the intracranial electrode to move slightly relative to the base, thereby avoiding bending of the part of the intracranial electrode extending into the skull when the patient's head makes some movements, and ensuring the reliability of use of the intracranial electrode. Due to the buffering effect provided by the electrode buffer, the change in the bending degree of the intracranial electrode in the active state can be greatly reduced, and the bending force, tensile force or other stresses received by the intracranial electrode at the electrode connection seat can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connection seat, preventing the intracranial electrode from cracking, breaking, being pulled off, etc., and ensuring the normal operation and service life of the intracranial electrode. In this embodiment, the electrode buffer can be directly connected to the skull, no longer relying on a cranial hole seat, and the structure is more compact, reducing the volume occupied by the intracranial electrode fixing device on the skull. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0029] Figure 1 A three-dimensional schematic diagram of the first embodiment of the electrode buffer of the present utility model;

[0030] Figure 2 A three-dimensional schematic diagram of one perspective of the second embodiment of the electrode buffer of the present utility model;

[0031] Figure 3 A three-dimensional schematic diagram of another perspective of the second embodiment of the electrode buffer of the present utility model;

[0032] Figure 4 Schematic exploded perspective view of the first embodiment of the intracranial electrode fixing device of the present utility model;

[0033] Figure 5 Schematic exploded perspective view of the second embodiment of the intracranial electrode fixing device of the present utility model;

[0034] Figure 6 Top view schematic of the third embodiment of the electrode buffer of the present utility model;

[0035] Figure 7 Cross-sectional view schematic of the third embodiment of the electrode buffer of the present utility model;

[0036] Figure 8 Cross-sectional view schematic of the fourth embodiment of the electrode buffer of the present utility model.

[0037] Explanation of reference numerals:

[0038] 100 - Electrode buffer;

[0039] 110 - Base; 111 - First connection ring; 112 - Second connection ring; 113 - Connection plate; H1 - First through hole; H2 - Second through hole; S1 - First surface; S2 - Second surface; H3 - Mounting hole;

[0040] 120 - Electrode connection seat; 121 - Connection hole;

[0041] 130 - Movable connection member; 131 - Slide groove; 132 - Slide post; 133 - Locking member;

[0042] 200 - Cranial hole seat; 210 - Mounting part; 220 - Fixing part; 221 - Fixing hole; 222 - Groove; 223 - Card slot;

[0043] 300 - Cranial hole cover; 310 - Snap; 320 - Avoidance hole;

[0044] 900 - Skull; 910 - Skull hole.

[0045] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0047] It should be noted that all directional indications in the embodiments of the present utility model, such as up, down, left, right, front, back... are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture as shown in the accompanying drawings. If this specific posture changes, the directional indications will also change accordingly.

[0048] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0049] Figure 1 It is a three-dimensional schematic diagram of the first embodiment of the electrode buffer member of the present utility model. The electrode buffer member 100 is used in an intracranial electrode fixing device. The electrode buffer member 100 includes a base 110 and an electrode connection seat 120. The base 110 is used for detachably connecting with a cranial hole seat that can be installed at a cranial hole. The electrode connection seat 120 is used for connecting an intracranial electrode. The electrode connection seat 120 is movably connected to the base 110, and the electrode connection seat 120 has a preset movement range relative to the base 110. The intracranial electrode can be connected to a pulse device through an electrical connection wire or directly connected to the pulse device, so as to deliver the pulse signal generated by the pulse device to the target position where the intracranial electrode extends.

[0050] According to the electrode buffer 100 of the embodiment of the present utility model, it includes a base 110 and an electrode connection seat 120. The base 110 is used for detachably connecting with a cranial hole seat that can be installed at the cranial hole. The electrode connection seat 120 is used for connecting an intracranial electrode. The electrode connection seat 120 is movably connected with the base 110, and the electrode connection seat 120 has a preset activity range relative to the base 110. Therefore, when the electrode connection seat 120 of the electrode buffer 100 connects the intracranial electrode or connects the intracranial electrode and is installed on the cranial hole seat along with the base 110, when the patient's head makes some movements, the presence of the electrode buffer 100 allows the intracranial electrode to make slight movements relative to the cranial hole seat, thereby avoiding the bending of the part of the intracranial electrode extending into the skull when the patient's head makes some movements, and ensuring the reliability of the use of the intracranial electrode. Due to the buffering effect provided by the electrode buffer 100, the change in the curvature of the intracranial electrode near the cranial hole seat in the active state can be greatly reduced, and the bending force, tensile force and other stresses on the intracranial electrode at the electrode connection seat 120 can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connection seat 120, preventing the intracranial electrode from cracking, breaking or being pulled off, and ensuring the normal operation and service life of the intracranial electrode.

[0051] In some embodiments, the electrode connection seat 120 is provided with a connection hole 121, and the connection hole 121 can connect the intracranial electrode. In some other embodiments, the electrode connection seat 120 may be provided with a clamping structure, and the clamping structure can clamp and connect the intracranial electrode.

[0052] In some embodiments, the electrode buffer 100 further includes a movable connecting piece 130. The connecting piece 130 movably connects the electrode connection seat 120 with the base 110, and the movable connecting piece 130 limits the activity range of the electrode connection seat 120 relative to the base 110. On the one hand, the movable connecting piece 130 movably connects the electrode connection seat 120 with the base 110, so that the electrode connection seat 120 and the connected intracranial electrode can move appropriately. On the other hand, the movable connecting piece 130 limits the activity range of the electrode connection seat 120 relative to the base 110, so that the activity range of the intracranial electrode is within the preset range, thereby avoiding excessive movement of the intracranial electrode and ensuring the reliability of the intracranial electrode.

[0053] In some embodiments, there are multiple movable connectors 130, which are evenly distributed on the outer peripheral side of the electrode connection base 120. In this embodiment, it is described by taking the electrode buffer 100 including three movable connectors 130 as an example. In some other embodiments, the number of the movable connectors 130 can be four, five, six or other numbers. When the electrode connection base 120 moves relative to the base 110, the multiple movable connectors 130 are linked with each other and pull the electrode connection base 120, so as to limit the movement range of the electrode connection base 120 while the electrode connection base 120 moves relative to the base 110, to avoid excessive displacement of the electrode connection base 120, and at the same time ensure the movement space of the intracranial electrode and reduce the friction between the intracranial electrode and the electrode fixing device.

[0054] In some embodiments, at least part of the structure of the base 110 is an annular structure. There is an activity gap between the outer peripheral side wall of the electrode connection base 120 and the inner peripheral side wall of the base 110. The movable connector 130 is connected between the outer peripheral side wall of the electrode connection base 120 and the inner peripheral side wall of the base 110, and each movable connector 130 is an elastic member.

[0055] In this embodiment, the base 110 includes a first connection ring 111 and a second connection ring 112 connected to the first connection ring 111 as a whole. The first connection ring 111 is used for detachable connection with the cranial hole seat. The electrode connection base 120 is connected to the inner side of the inner circumference of the second connection ring 112 through a plurality of movable connectors 130.

[0056] In this embodiment, there is an activity gap between the outer peripheral side wall of the electrode connection base 120 and the inner peripheral side wall of the second connection ring 112. The movable connector 130 is connected between the outer peripheral side wall of the electrode connection base 120 and the inner peripheral side wall of the second connection ring 112. Each movable connector 130 is an elastic member.

[0057] On the one hand, the multiple elastic movable connectors 130 provide support for the electrode connection base 120 together with the clamped intracranial electrode, and on the other hand, they also provide a certain movement margin for the electrode connection base 120 within the range of its elastic deformation.

[0058] In some embodiments, the movable connector 130, the electrode connection base 120, and the base 110 are integrally formed, or the movable connector 130, the electrode connection base 120, and the base 110 are detachably connected to each other, or the movable connector 130 is integrally formed with at least one of the electrode connection base 120 and the base 110. In this embodiment, the movable connector 130 is integrally formed with at least one of the electrode connection base 120 and the second connection ring 112. Each movable connector 130 is an elastic member that bends and extends. In this embodiment, the movable connector 130 is integrally formed with the electrode connection base 120 and the second connection ring 112. There is a movable gap between the outer peripheral side wall of the electrode connection base 120 and the inner peripheral side wall of the second connection ring 112, and the compression limit and / or extension limit of each movable connector 130 jointly limit the movement range of the electrode connection base 120 relative to the base 110, so as to ensure that the movement of the electrode connection base 120 relative to the base 110 is within a preset allowable range.

[0059] Figure 2 , Figure 3 is a three-dimensional schematic diagram of different perspectives of the second embodiment of the electrode buffer 100 of the present invention. The electrode buffer 100 includes a base 110 and an electrode connection base 120. The base 110 is used for detachably connecting with a cranial hole base that can be installed at a cranial hole. The electrode connection base 120 is used for connecting an intracranial electrode. The electrode connection base 120 is movably connected to the base 110, and the electrode connection base 120 has a preset movement range relative to the base 110. The intracranial electrode can be connected to a pulse device through an electrical connection wire or directly connected to the pulse device, so as to deliver the pulse signal generated by the pulse device to the target position where the intracranial electrode extends.

[0060] The electrode buffer 100 further includes a movable connector 130. The movable connector 130 movably connects the electrode connection base 120 to the base 110, and the movable connector 130 limits the movement range of the electrode connection base 120 relative to the base 110.

[0061] In some embodiments, the base 110 includes a connection disk 113. In this embodiment, the base 110 includes a first connection ring 111 and a connection disk 113 connected to the first connection ring 111 as a whole. The first connection ring 111 is used for detachably connecting with the cranial hole base. The electrode connection base 120 is connected to the connection disk 113 through a plurality of movable connectors 130. A first through hole H1 for the intracranial electrode to pass through is provided in the center of the connection disk 113.

[0062] In this embodiment, each movable connecting member 130 includes a chute 131 provided on the connecting disk 113 and a sliding column 132 provided on the electrode connecting seat 120 and slidably engaged with the chute 131. The sliding column 132 slides relative to the chute 131 under the guidance of the chute 131, enabling the electrode connecting seat 120 to move relative to the base 110. The chute 131 has a preset extension length, which defines the sliding range of the sliding column 132. A plurality of pairs of chutes 131 and sliding columns 132 jointly limit the movement range of the electrode connecting seat 120 relative to the base 110.

[0063] In this embodiment, each chute 131 extends along the radial direction of the connecting disk 113. In some other embodiments, the chute 131 may be inclined relative to the radial direction of the connecting disk 113.

[0064] The connecting disk 113 includes opposite first surface S1 and second surface S2. The electrode connecting seat 120 is located on the side where the first surface S1 is located, and the chute 131 penetrates from the first surface S1 to the second surface S2. In some embodiments, each movable connecting member 130 further includes a locking member 133. The sliding column 132 passes through the chute 131. The locking member 133 is connected to the end of the sliding column 132 away from the electrode connecting seat 120 on the side where the second surface S2 is located, and the width of the locking member 133 is greater than the width of the chute 131. The locking member 133 can prevent the sliding column 132 from falling off the chute 131, thereby ensuring the stability of the connection between the electrode connecting seat 120 and the base 110. In some embodiments, the locking member 133 is detachably connected to the sliding column 132, thereby enabling a detachable connection between the electrode connecting seat 120 and the base 110.

[0065] For the electrode buffer 100 according to the above embodiment, the electrode connecting seat 120 is used to connect the intracranial electrode, and the electrode connecting seat 120 is movably connected to the base 110. Among them, the sliding column 132 slides relative to the chute 131 under the guidance of the chute 131, enabling the electrode connecting seat 120 to move relative to the base 110. A plurality of pairs of chutes 131 and sliding columns 132 jointly limit the movement range of the electrode connecting seat 120 relative to the base 110. Therefore, when the electrode connecting seat 120 of the electrode buffer 100 clamps the intracranial electrode and is installed on the cranial hole seat together with the base 110, when the patient's head makes some movements, the above structure allows the intracranial electrode to make slight movements relative to the cranial hole seat, thereby preventing the part of the intracranial electrode extending into the skull from being bent when the patient's head makes some movements, and ensuring the reliability of use of the intracranial electrode. Due to the buffering effect provided by the electrode buffer 100, the bending degree change of the intracranial electrode near the cranial hole seat in the active state can be greatly reduced, and the bending force received by the intracranial electrode at the electrode connecting seat 120 can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connecting seat 120, preventing the intracranial electrode from cracking and breaking, and ensuring the normal operation and service life of the intracranial electrode.

[0066] An embodiment of the present utility model further provides an intracranial electrode fixing device, which includes a cranial hole seat and the electrode buffer member 100 of any of the foregoing embodiments.

[0067] Figure 4 It is a three-dimensional exploded view of the first embodiment of the intracranial electrode fixing device of the present utility model. The intracranial electrode fixing device of the first embodiment includes the electrode buffer member 100 of the above first embodiment. Figure 5 It is a three-dimensional exploded view of the second embodiment of the intracranial electrode fixing device of the present utility model. The intracranial electrode fixing device of the second embodiment includes the electrode buffer member 100 of the above second embodiment. The cranial hole seat 200 can be installed at the cranial bone hole. The electrode buffer member 100 is detachably connected to the cranial hole seat 200. Specifically, the electrode buffer member 100 includes a base 110 and an electrode connection seat 120. The base 110 is used for detachably connecting to the cranial hole seat 200. The electrode connection seat 120 is used for connecting the intracranial electrode. The electrode connection seat 120 is movably connected to the base 110, and the electrode connection seat 120 has a preset movement range relative to the base 110. The intracranial electrode can be connected to the pulse device through an electrical connection wire or the intracranial electrode is directly connected to the pulse device, so as to deliver the pulse signal generated by the pulse device to the target position where the intracranial electrode extends.

[0068] In some embodiments, the electrode connection seat 120 is provided with a connection hole 121, and the connection hole 121 can connect the intracranial electrode. In some other embodiments, the electrode connection seat 120 may be provided with a clamping structure, and the clamping structure can clamp and connect the intracranial electrode.

[0069] An intracranial electrode fixing device according to an embodiment of the present invention includes an electrode buffer member 100 and a cranial hole seat 200, and the electrode buffer member 100 is detachably connected to the cranial hole seat 200. The electrode buffer member 100 includes a base 110 and an electrode connection seat 120. The base 110 is used for detachably connecting to the cranial hole seat 200, and the electrode connection seat 120 is used for connecting an intracranial electrode. The electrode connection seat 120 is movably connected to the base 110, and the electrode connection seat 120 has a preset activity range relative to the base 110. Therefore, when the electrode connection seat 120 of the electrode buffer member 100 connects the intracranial electrode and is installed on the cranial hole seat 200 along with the base 110, when the patient's head makes some movements, the electrode buffer member 100 allows the intracranial electrode to make a small movement relative to the cranial hole seat 200, thereby avoiding the part of the intracranial electrode extending into the intracranial cavity from being bent when the patient's head makes some movements, and ensuring the reliability of use of the intracranial electrode. Due to the buffering effect provided by the electrode buffer member 100, the change in the curvature of the intracranial electrode near the intracranial electrode fixing device in the active state can be greatly reduced, and the bending force, tensile force or other stresses received by the intracranial electrode at the electrode connection seat 120 can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connection seat 120, preventing damage such as cracking, breaking and pulling off of the intracranial electrode, and ensuring the normal operation and service life of the intracranial electrode.

[0070] In the intracranial electrode fixing device of the first embodiment, at least part of the structure of the base 110 is a ring structure, there is an activity gap between the outer peripheral side wall of the electrode connection seat 120 and the inner peripheral side wall of the base 110, and an activity connecting member 130 is connected between the outer peripheral side wall of the electrode connection seat 120 and the inner peripheral side wall of the base 110, and each activity connecting member 130 is an elastic member.

[0071] In the intracranial electrode fixing device of the second embodiment, the base 110 includes a connecting disk 113, and each activity connecting member 130 includes a sliding groove 131 provided on the connecting disk 113 and a sliding column 132 provided on the electrode connection seat 120 and slidably matched with the sliding groove 131. The sliding column 132 slides relative to the sliding groove 131 under the guidance of the sliding groove 131, so that the electrode connection seat 120 can move relative to the base 110. Optionally, each activity connecting member 130 further includes a locking member 133, and the locking member 133 is connected to the sliding column 132.

[0072] In some embodiments, the cranial hole seat 200 includes an installation part 210 and a fixing part 220. The installation part 210 is tubular and is used for detachably connecting to the electrode buffer member 100, and the fixing part 220 is provided on the outer periphery of the installation part 210, and the fixing part 220 is used for connecting to the skull.

[0073] In some embodiments, the fixing portion 220 includes at least two fixing holes 221 through which the connecting member can pass to be connected to the skull, thereby realizing the connection between the fixing portion 220 and the skull. For example, a screw can pass through the fixing hole 221 and be threadedly connected to the skull.

[0074] In some embodiments, the fixing portion 220 includes at least one groove 222, and each groove 222 communicates with the inner side of the mounting portion 210 and extends to the outer peripheral side of the fixing portion 220, and the intracranial electrode can pass through the groove 222. When the above intracranial electrode fixing device is used to fix the intracranial electrode, after the intracranial electrode is connected to the electrode buffer 100, it is installed on the cranial hole seat 200 together with the electrode buffer 100. One end of the intracranial electrode extends into the skull, and the intracranial electrode located on the side of the electrode buffer 100 away from the skull can pass through the groove 222. In some embodiments, the intracranial electrode can be clamped in the groove 222. The intracranial electrode is electrically connected to the pulse device.

[0075] In some embodiments, the surface of the fixing portion 220 facing the skull has a curved surface structure matching the skull, so that the cranial hole seat 200 can be tightly installed on the skull.

[0076] In some embodiments, the intracranial electrode fixing device further includes a cranial hole cover 300. The cranial hole cover 300 can be detachably covered on the cranial hole seat 200, so that the electrode buffer 100 is clamped between the cranial hole cover 300 and the cranial hole seat 200.

[0077] In some embodiments, a clamping groove 223 is provided on the cranial hole seat 200, and a clamping buckle 310 is provided on the cranial hole cover 300. The clamping buckle 310 is engaged with the clamping groove 223 to realize the detachable connection between the cranial hole cover 300 and the cranial hole seat 200. In some other embodiments, other detachable connection methods can be used to connect the cranial hole cover 300 and the cranial hole seat 200.

[0078] In some embodiments, the cranial hole cover 300 is provided with an avoidance hole 320, and the avoidance hole 320 is correspondingly arranged with the groove 222 on the fixing portion 220. In a state where the cranial hole cover 300 is covered on the cranial hole seat 200, the avoidance hole 320 and the groove 222 are correspondingly communicated.

[0079] During the installation process of the intracranial electrode, first, the cranial hole cover 300 is fixedly installed at the cranial hole of the skull, the intracranial electrode is connected to the electrode buffer 100, and then the electrode buffer 100 is installed on the cranial hole cover 300, so that a part of the intracranial electrode extends into the skull. The part of the intracranial electrode exposed outside the electrode buffer 100 is combed and guided into the groove 222 on the cranial hole seat 200, and then the cranial hole cover 300 is covered on the cranial hole seat 200 to complete the installation process of the intracranial electrode.

[0080] In some of the above embodiments, the electrode buffer member 100 is connected to the skull through the cranial hole seat 200. In some other embodiments, the electrode buffer member 100 may be connected to the skull in other ways.

[0081] Figure 6 , Figure 7 FIG. 18 is a top view and a cross-sectional view of a third embodiment of the electrode buffer member of the present invention. In this embodiment, the electrode buffer member 100 includes a base 110 and an electrode connection seat 120. The base 110 is used for detachably connecting to the skull 900. The electrode connection seat 120 is hermetically and movably connected to the base 110. The electrode connection seat 120 is used for connecting an intracranial electrode. The electrode connection seat 120 is configured to be able to move relative to the base 110 in at least one direction and has a preset range of movement to adjust the relative positions of the electrode connection seat 120 and / or the intracranial electrode and / or the base 110. The intracranial electrode can be connected to the pulse device through an electrical connection wire or the intracranial electrode is directly connected to the pulse device, so as to deliver the pulse signal generated by the pulse device to the target position where the intracranial electrode extends.

[0082] According to the electrode buffer member 100 of the embodiment of the present invention, it includes a base 110 and an electrode connection seat 120. The base 110 is used for detachably connecting to the skull 900. The electrode connection seat 120 is used for connecting an intracranial electrode. The electrode connection seat 120 is hermetically and movably connected to the base 110. The electrode connection seat 120 is configured to be able to move relative to the base 110 in at least one direction and has a preset range of movement to adjust the relative positions of the electrode connection seat 120 and / or the intracranial electrode and / or the base 110, which can not only ensure the freedom of movement of the intracranial electrode but also avoid damage to the intracranial electrode during movement. Therefore, when the electrode connection seat 120 of the electrode buffer member 100 is connected to the intracranial electrode and installed on the skull 900 along with the base 110, when the patient's head makes some movements, the electrode buffer member 100 allows the intracranial electrode to make a slight movement relative to the base 110, thereby avoiding bending of the part of the intracranial electrode extending into the intracranial cavity when the patient's head makes some movements and ensuring the reliability of use of the intracranial electrode. Due to the buffering effect provided by the electrode buffer member 100, the change in the curvature of the intracranial electrode in the active state can be greatly reduced, and the bending force, tensile force or other stresses received by the intracranial electrode at the electrode connection seat 120 can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connection seat 120, preventing the intracranial electrode from cracking, breaking or being pulled off, and ensuring the normal operation and service life of the intracranial electrode. In this embodiment, the electrode buffer member 100 can be directly connected to the skull 900, no longer relying on the cranial hole seat, with a more compact structure and reduced volume occupation of the intracranial electrode-related fixing structure on the skull 900.

[0083] In some embodiments, both the electrode connection base 120 and the base 110 are integrally formed, or the electrode connection base 120 and the base 110 are detachably connected.

[0084] In some embodiments, the electrode connection base 120 is provided with a connection hole 121, and the connection hole 121 can be connected to an intracranial electrode. In some other embodiments, the electrode connection base 120 may be provided with a clamping structure that can clamp and connect the intracranial electrode.

[0085] In some embodiments, the base 110 is provided with a mounting hole H3, and the base 110 is connected to the skull 900 through the mounting hole H3. For example, a threaded connector passes through the mounting hole H3 and is connected to the skull 900, so that the base 110 is mounted on the skull 900.

[0086] In some embodiments, the electrode buffer 100 further includes a movable connector 130. The movable connector 130 seals and movably connects the electrode connection base 120 and the base 110, and the movable connector 130 limits the range of movement of the electrode connection base 120 relative to the base 110. In this embodiment, the movable connector 130 seals the electrode connection base 120 and the base 110 in the circumferential direction. Optionally, the movable connector 130 is in a folded sleeve structure.

[0087] In some embodiments, the movable connector 130, the electrode connection base 120, and the base 110 are integrally formed, or the movable connector 130, the electrode connection base 120, and the base 110 are all detachably connected, or the movable connector 130 is integrally formed with at least one of the electrode connection base 120 and the base 110.

[0088] In some embodiments, the base 110 has a second through hole H2, and the second through hole H2 is coaxially arranged with the skull hole 910 of the skull 900, and the intracranial electrode penetrates through the second through hole H2 and the skull hole 910.

[0089] Such as Figure 7 , in this embodiment, the surface of the electrode connection base 120 away from the skull 900 protrudes relative to the surface of the base 110 away from the skull 900. Due to the protruding arrangement of the electrode connection base 120, it is more convenient to perform the connection operation of the intracranial electrode on the electrode connection base 120.

[0090] Figure 8This is a cross-sectional schematic view of the fourth embodiment of the electrode buffer of the present utility model. Some structures of the electrode buffer 100 in the fourth embodiment are similar to those in the foregoing third embodiment. The differences between the two will be described below, and the same parts will not be elaborated. Optionally, the surface of the electrode connection base 120 away from the skull 900 is flush with the surface of the base 110 away from the skull 900; or the surface of the electrode connection base 120 away from the skull 900 is recessed relative to the surface of the base 110 away from the skull 900. For example, in this embodiment, the surface of the electrode connection base 120 away from the skull 900 is recessed relative to the surface of the base 110 away from the skull 900. When the electrode connection base 120 is flush with the base 110 or recessed relative to the base 110, the overall electrode buffer 100 is flatter after being installed on the skull 900, reducing the foreign body sensation of protrusion.

[0091] The embodiment of the present utility model also provides an intracranial electrode fixing device, which includes the electrode buffer 100 of the foregoing embodiment. The electrode buffer 100 includes a base 110 and an electrode connection base 120. The base 110 is used for detachably connecting to the skull 900. The electrode connection base 120 is hermetically and movably connected to the base 110. The electrode connection base 120 is used for connecting an intracranial electrode. The electrode connection base 120 is configured to be movable relative to the base 110 along at least one direction and have a preset movement range to adjust the relative positions of the electrode connection base 120 and / or the intracranial electrode and / or the base 110. The base 110 of the electrode buffer 100 is connected to the skull hole 910. In this embodiment, the intracranial electrode fixing device includes, for example, the electrode buffer 100 of the foregoing third embodiment or fourth embodiment.

[0092] An intracranial electrode fixing device according to an embodiment of the present invention includes an electrode buffer member 100, and a base 110 of the electrode buffer member 100 is connected to a skull hole 910. The electrode buffer member 100 includes a base 110 and an electrode connection seat 120. The base 110 is used for detachably connecting to the skull 900, and the electrode connection seat 120 is used for connecting an intracranial electrode. The electrode connection seat 120 is hermetically and movably connected to the base 110, and the electrode connection seat 120 is configured to be able to move along at least one direction relative to the base 110 and have a preset movement range. Therefore, when the electrode connection seat 120 of the electrode buffer member 100 is connected to the intracranial electrode and installed on the skull 900 together with the base 110, when the patient's head makes some movements, the electrode buffer member 100 allows the intracranial electrode to make a small movement relative to the base 110, thereby avoiding the bending of the part of the intracranial electrode extending into the skull when the patient's head makes some movements, and ensuring the reliability of the use of the intracranial electrode. Due to the buffering effect provided by the electrode buffer member 100, the change in the curvature of the intracranial electrode in the active state can be greatly reduced, and the bending force, tensile force or other stresses received by the intracranial electrode at the electrode connection seat 120 can be reduced, effectively reducing the wear between the intracranial electrode and the electrode connection seat 120, preventing the intracranial electrode from cracking, breaking or being pulled off, and ensuring the normal operation and service life of the intracranial electrode. In this embodiment, the electrode buffer member 100 can be directly connected to the skull 900 without relying on a cranial hole seat, the structure is more compact, and the volume occupied by the intracranial electrode fixing device on the skull 900 is reduced.

[0093] In some alternative embodiments, the intracranial electrode fixing device further includes a cranial hole cover. The cranial hole cover can be detachably covered on the base 110.

[0094] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An electrode buffer for use in an intracranial electrode fixing device, characterized in that: The electrode buffer comprises: A base, the base being used for detachably connecting with a cranial hole seat that can be installed at a cranial hole; An electrode connection seat, the electrode connection seat is used to connect intracranial electrodes, the electrode connection seat is movably connected to the base, and the electrode connection seat has a preset range of movement relative to the base.

2. The electrode buffer according to claim 1, characterized in that: Also includes: A movable connecting member movably connects the electrode connecting seat with the base, and the movable connecting member limits the movable range of the electrode connecting seat relative to the base.

3. The electrode buffer according to claim 2, characterized in that: There are multiple movable connecting members, which are evenly distributed on the outer peripheral side of the electrode connecting seat.

4. The electrode buffer according to claim 3, characterized in that: At least part of the structure of the base is an annular structure, there is a movable gap between the outer peripheral side wall of the electrode connecting seat and the inner peripheral side wall of the base, the movable connecting member is connected between the outer peripheral side wall of the electrode connecting seat and the inner peripheral side wall of the base, and each of the movable connecting members is an elastic member.

5. The electrode buffer according to claim 4, characterized in that: The movable connecting member is integrally formed with at least one of the electrode connecting seat and the base, and each of the movable connecting members is a bent and extended elastic member.

6. The electrode buffer according to claim 2, characterized in that: The base comprises a connection disk, the electrode connection seat is connected to the connection disk through a plurality of movable connecting members, and a first through hole for the intracranial electrode to pass through is arranged in the center of the connection disk.

7. The electrode buffer according to claim 6, characterized in that: Each of the movable connecting parts includes a slide groove arranged on the connecting plate and a sliding column arranged on the electrode connecting seat and slidingly matched with the slide groove.

8. The electrode buffer according to claim 7, characterized in that: Each of the slide grooves extends along the radial direction of the connecting disk.

9. The electrode buffer according to claim 7, characterized in that: The connecting plate includes a first surface and a second surface that are opposite to each other, the electrode connecting seat is located on the side where the first surface is located, and the slide groove extends from the first surface to the second surface. Each of the movable connecting parts also includes a locking part, the sliding column passes through the slide groove, and the locking part is connected to an end of the sliding column away from the electrode connecting seat on the side where the second surface is located, and the width of the locking part is greater than the width of the slide groove.

10. An intracranial electrode fixing device, characterized in that: include: A cranial hole seat, which can be installed at the skull hole; as well as The electrode buffer according to any one of claims 1 to 9, wherein the electrode buffer is detachably connected to the cranial hole seat.

11. The intracranial electrode fixing device according to claim 10, characterized in that: The cranial hole seat comprises a mounting part and a fixing part, wherein the mounting part is tubular and used for being detachably connected with the electrode buffer, and the fixing part is arranged on the periphery of the mounting part and used for being connected with the skull.

12. The intracranial electrode fixing device according to claim 11, characterized in that: The fixing portion includes at least one groove, each of which is communicated with the inner side of the mounting portion and extends to the outer peripheral side of the fixing portion, and the intracranial electrode can pass through the groove.

13. The intracranial electrode fixing device according to claim 10, characterized in that: Also includes: The skull hole cover can be detachably covered on the skull hole seat, so that the electrode buffer is clamped between the skull hole cover and the skull hole seat.

14. An electrode buffer, characterized in that: include: a base for removable connection to the skull; An electrode connection seat, sealed and movably connected to the base, and used for connecting intracranial electrodes; The electrode connection seat is configured to be movable in at least one direction relative to the base and has a preset range of motion.

15. The electrode buffer according to claim 14, characterized in that: Also includes: A movable connecting member seals and movably connects the electrode connecting seat and the base, and the movable connecting member limits the movable range of the electrode connecting seat relative to the base.

16. The electrode buffer according to claim 14 or 15, characterized in that: The base has a second through hole, the second through hole is coaxially arranged with the skull hole of the skull, and the intracranial electrode passes through the second through hole and the skull hole.

17. The electrode buffer according to claim 14 or 15, characterized in that: The surface of the electrode connection base away from the skull is arranged flush with the surface of the base away from the skull; or The surface of the electrode connection seat away from the skull is recessed relative to the surface of the base away from the skull.

18. The electrode buffer according to claim 14 or 15, characterized in that: The surface of the electrode connection seat away from the skull is protruded relative to the surface of the base away from the skull.

19. An intracranial electrode fixing device, characterized in that: The electrode buffer comprises the electrode buffer as claimed in any one of claims 14 to 18, wherein the base of the electrode buffer is connected to a skull hole.

Images