Macro-micro composite electrode

Abstract

The utility model relates to a macro-micro composite electrode. The macro-micro combined electrode comprises a macro electrode outer tube, a connector assembly, a macro electrode connecting line and a micro electrode connecting line. A microelectrode outer tube is arranged in the inner tube, a microelectrode tow is arranged in the microelectrode outer tube, and the microelectrode outer tube and the microelectrode tow can slide in the inner tube. The macro-electrode outer tube and the micro-electrode wire bundle are collected into the connector assembly and connected with the macro-electrode connecting line and the micro-electrode connecting line respectively, the micro-electrode connecting line is pushed and pulled to drive the micro-electrode outer tube to move, and therefore the front end of the micro-electrode wire bundle stretches out or retracts from the front end of the outer sleeve. The macro electrode outer tube and the wire extend in one direction, the macro electrode catheter serves as a guide column of the microelectrode tow pushing mechanism, due to the fact that the microelectrode tow is small in diameter and low in strength, the microelectrode tow is effectively prevented from being bent in the pushing process, pushing operation and pushing precision are not affected, and meanwhile the macro electrode and the microelectrode are coaxial, so that surgical operation of a doctor is facilitated.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices and equipment, and in particular, relates to a macro-micro composite electrode. Background Art

[0002] Macroelectrodes are electrodes with larger shapes. They are mainly used to measure the potential of larger parts of organisms or to apply electrical stimulation to larger parts of organisms. Microelectrodes are electrodes with fine tips, good mechanical properties, and can detect cellular electrical activity. Macro-micro composite electrodes refer to electrodes that have both macroelectrodes and microelectrodes.

[0003] CN109431486A discloses a macro-micro composite electrode, comprising: an electrode wire outer sleeve, a macro electrode ring and a micro electrode wire bundle, wherein the macro electrode ring is sleeved on the outer side wall of the detection end of the electrode wire outer sleeve; the detection end of the electrode wire outer sleeve is provided with a micro electrode wire shunt device, and the micro electrode wire shunt device is provided with a plurality of conduction holes respectively connected with the inner cavity of the electrode wire outer sleeve, the micro electrode wire bundle is passed through the inner cavity of the electrode wire outer sleeve, and the single micro electrode wire in the micro electrode wire bundle is respectively passed through each conduction hole.

[0004] However, in this composite electrode, the macroelectrode and the microelectrode are separated at the front end. During the pushing process, the microelectrode wire bundle has low strength and is prone to bending, which affects the microelectrode pushing operation and the control accuracy of the pushing position. At the same time, the separation of the macroelectrode and the microelectrode is not convenient for doctors to operate and fix the surgery. Utility Model Content

[0005] The technical problem to be solved by the utility model is to solve the deficiencies in the prior art and thus provide a macro-micro composite electrode which is convenient and accurate to push.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A macro-micro composite electrode, comprising:

[0008] The macroelectrode outer tube is a hollow structure with a macroelectrode ring at the front end. The inner tube is provided inside the macroelectrode outer tube. The inner tube is provided with a microelectrode outer tube. The microelectrode outer tube is provided with a microelectrode wire bundle. The microelectrode outer tube and the microelectrode wire bundle can slide inside the inner tube.

[0009] The connector assembly comprises a hollow sleeve, a connecting block is arranged in the sleeve, the two ends of the sleeve are respectively a front end block and a rear end block, the rear end block is hollow and is provided with a limit block; the microelectrode wire bundle passes through the wall of the microelectrode inner tube and extends into the inner tube after passing through the front end block;

[0010] The macro electrode connecting wire passes through the connector assembly and is connected to the macro electrode outer tube through the wire protective sleeve. The end of the macro electrode connecting wire has a first connecting contact, and the first connecting contact is electrically connected to the macro electrode ring. The connected wires are sequentially led out from the first connecting contact and connected to the macro electrode ring through the inside of the macro electrode connecting wire, the inside of the wire protective sleeve, and the gap between the macro electrode outer tube and the inner tube. The macro electrode connecting wire only passes through the connecting block but is not fixed to the connecting block.

[0011] A microelectrode connecting wire, wherein the microelectrode connecting wire extends from one end of the rear end block into the sleeve and is fixed to the connecting block, and a microelectrode outer tube extends from one end of the front end block into the connector assembly and is fixedly connected to the microelectrode connecting wire. The microelectrode outer tube can be driven to move by pushing and pulling the microelectrode connecting wire, so that the front end of the microelectrode wire bundle extends out of or retracts from the front end of the outer sleeve. The end of the microelectrode connecting wire has a second connecting contact, which is electrically connected to the microelectrode wire bundle. The limit block can fix the microelectrode connecting wire or release the fixation of the microelectrode connecting wire.

[0012] Preferably, in the macro-micro composite electrode of the utility model, the connecting wire between the macro electrode connecting wire and the macro electrode outer tube is located in the wire protection sleeve, the inner tube and the wire protection sleeve between the macro electrode outer tube and the front end block are both located inside the outer sleeve, and the two ends of the wire protection sleeve extend into the macro electrode outer tube and the macro electrode connecting wire respectively.

[0013] Preferably, in the macro-micro composite electrode of the utility model, the wall of the sleeve is made of a transparent material and has scales on the wall.

[0014] Preferably, in the macro-micro composite electrode of the utility model, the front end block is fixedly connected to the outer sleeve, the wire protection sleeve and the microelectrode outer tube and inner tube are located in the outer sleeve, and the macroelectrode outer tube extends into the outer sleeve.

[0015] Preferably, in the macro-micro composite electrode of the utility model, the rear end block has an internal thread, and the limit block has an external thread, and the microelectrode connecting wire can be fixed when the limit block is tightened.

[0016] Preferably, in the macro-micro composite electrode of the utility model, the macro electrode connecting wire and the micro electrode connecting wire are both hoses.

[0017] Preferably, in the macro-micro composite electrode of the utility model, the microelectrode filament bundle has a forked front end and is emitted outward in a scattered manner. It is made of platinum alloy, platinum-iridium alloy or nickel-cobalt alloy and has a certain elasticity.

[0018] Preferably, in the macro-micro composite electrode of the utility model, the front end of the inner tube is free of a microelectrode outer tube at a position corresponding to the bifurcation and movement of the front end of the microelectrode filament bundle.

[0019] The beneficial effects of the utility model are:

[0020] The macro-micro composite electrode of the present application comprises a macro-electrode outer tube, a connector assembly, a macro-electrode connecting wire and a micro-electrode connecting wire. A micro-electrode outer tube is arranged inside the inner tube, and a micro-electrode wire bundle is arranged inside the micro-electrode outer tube, and the micro-electrode outer tube together with the micro-electrode wire bundle can slide inside the inner tube. The macro-electrode outer tube and the micro-electrode wire bundle are collected in the connector assembly, and are respectively connected to the macro-electrode connecting wire and the micro-electrode connecting wire. Pushing and pulling the micro-electrode connecting wire can drive the micro-electrode outer tube to move, so that the front end of the micro-electrode wire bundle extends or retracts from the front end of the outer sleeve. The macro-electrode outer tube and the wire extend in one direction. The macro-electrode catheter serves as a guide column of the micro-electrode wire bundle pushing mechanism, which effectively prevents the micro-electrode wire bundle (micro-electrode wire bundle has a small diameter and low strength) from bending during pushing, affecting the pushing operation and pushing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 is a schematic diagram of the structure of a macro-micro composite electrode according to an embodiment of the present application;

[0023] Figure 2 is a schematic structural diagram of a connector assembly according to an embodiment of the present application;

[0024] Figure 3 is a cross-sectional view of a connector assembly according to an embodiment of the present application;

[0025] Figure 4 is a schematic structural diagram of the front end of the macro electrode outer tube of an embodiment of the present application;

[0026] Figure 5 It is a schematic diagram of the structure after the outer sleeve is hidden between the macro electrode outer tube and the connector assembly in an embodiment of the present application.

[0027] The reference numerals in the figure are:

[0028] 1 Macro electrode outer tube;

[0029] 2 Connector assembly;

[0030] 3 Macro electrode connection wire;

[0031] 4 Microelectrode connecting wire;

[0032] 10 inner tube;

[0033] 11 Microelectrode wire bundle;

[0034] 12 macroelectrode ring;

[0035] 13 microelectrode outer tube;

[0036] 19 outer sleeve;

[0037] 21 sleeve;

[0038] 22 connection blocks;

[0039] 23 limit block;

[0040] 24 rear end block;

[0041] 25 front end block;

[0042] 31 wire protection cover;

[0043] 32 first connection point;

[0044] 42 Second connection point. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 therefore cannot be understood as limiting the scope of protection 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 number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of the present utility model, unless otherwise specified, "multiple" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0048] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0049] Example

[0050] This embodiment provides a macro-micro composite electrode, such as Figure 1 As shown, including:

[0051] The macroelectrode outer tube 1 is a hollow structure, with a macroelectrode ring 12 at the front end, an inner tube 10 is arranged inside the macroelectrode outer tube 1, a microelectrode outer tube 13 is arranged inside the inner tube 10, and a microelectrode wire bundle 11 is arranged inside the microelectrode outer tube 13, and the microelectrode outer tube 13 together with the microelectrode wire bundle 11 can slide inside the inner tube 10; (the microelectrode outer tube 13 may not extend to the front end of the inner tube 10)

[0052] The connector assembly 2 comprises a hollow sleeve 21, a connecting block 22 is arranged in the sleeve 21, and the two ends of the sleeve 21 are respectively a front end block 25 and a rear end block 24, and the rear end block 24 is hollow and provided with a limit block 23; the microelectrode wire bundle 11 passes through the wall of the microelectrode inner tube 10 and extends into the inner tube 10 after passing through the front end block 25;

[0053] The macro electrode connection line 3 passes through the connector assembly 2 and is connected to the macro electrode outer tube 1 through the wire protection sleeve 31. The end of the macro electrode connection line 3 has a first connection contact 32. The first connection contact 32 is electrically connected to the macro electrode ring 12. The connected wires are sequentially led out from the first connection contact 32 and connected to the macro electrode ring 12 through the inside of the macro electrode connection line 3, the inside of the wire protection sleeve 31, and the gap between the macro electrode outer tube 1 and the inner tube 10. The macro electrode connection line 3 only passes through the connection block 22, but is not fixed to the connection block 22.

[0054] The microelectrode connecting wire 4 extends from one end of the rear end block 24 into the sleeve 21 and is fixed to the connecting block 22. The microelectrode outer tube 13 extends from one end of the front end block 25 into the connector assembly 2 and is fixedly connected to the microelectrode connecting wire 4. The microelectrode outer tube 13 can be driven to move by pushing and pulling the microelectrode connecting wire 4, so that the front end of the microelectrode wire bundle 11 extends out from or retracts from the front end of the macroelectrode outer tube 1. The end of the microelectrode connecting wire 4 has a second connecting contact 42, and the second connecting contact 42 is electrically connected to the microelectrode wire bundle 11 (connected by a wire, the wire is led out from the second connecting contact 42, and extends into the inner tube 10 through the inside of the microelectrode connecting wire 4). The limit block 23 can fix the microelectrode connecting wire 4 or release the fixation of the microelectrode connecting wire 4 (when the limit block 23 can fix the microelectrode connecting wire 4, the microelectrode connecting wire 4 cannot be pushed or pulled).

[0055] The macro-micro composite electrode of this embodiment includes a macro electrode outer tube 1, a connector assembly 2, a macro electrode connecting wire 3 and a micro electrode connecting wire 4. A micro electrode outer tube 13 is arranged inside the inner tube 10, and a micro electrode wire bundle 11 is arranged inside the micro electrode outer tube 13. The micro electrode outer tube 13 and the micro electrode wire bundle 11 can slide inside the inner tube 10. The macro electrode outer tube 1 and the micro electrode wire bundle 11 are collected in the connector assembly 2, and are respectively connected to the macro electrode connecting wire 3 and the micro electrode connecting wire 4. Pushing and pulling the micro electrode connecting wire 4 can drive the micro electrode outer tube 13 to move, so that the front end of the micro electrode wire bundle 11 extends or retracts from the front end of the outer sleeve 1. The macro electrode outer tube 1 and the wire extend in one direction. The macro electrode catheter serves as a guide column of the micro electrode wire bundle pushing mechanism, which effectively prevents the micro electrode wire bundle (micro electrode wire bundle has a small diameter and low strength) from bending during pushing, which affects the pushing operation and pushing accuracy.

[0056] Furthermore, if Figure 5 As shown, the connecting wire between the macro electrode connecting wire 3 and the macro electrode outer tube 1 is located in the wire protection sleeve 31, the inner tube 10 and the wire protection sleeve 31 between the macro electrode outer tube 1 and the front end block 25 are both located inside the outer sleeve 19, and the two ends of the wire protection sleeve 31 extend into the macro electrode outer tube 1 and the macro electrode connecting wire 3 respectively. The part of the wire located in the macro electrode outer tube 1 no longer has the wire protection sleeve 31, and the wire is connected to the macro electrode ring 12 through the gap between the macro electrode outer tube 1 and the inner tube 10.

[0057] Furthermore, the wall of the sleeve 21 is made of a transparent material and has scales on the wall to facilitate the operator to observe the position of the connecting block 22 in the sleeve 21 , thereby allowing the operator to understand the length of the front end of the microelectrode wire bundle 11 extending therefrom.

[0058] Furthermore, the front end block 25 is fixedly connected to the outer sleeve 19, the wire protection sleeve 31 and the microelectrode outer tube 13 and the inner tube 10 are located in the outer sleeve 19, and the macroelectrode outer tube 1 extends into the outer sleeve 19, that is, there is an outer sleeve 19 between the macroelectrode outer tube 1 and the front end block 25, and the microelectrode outer tube 13 and the wire protection sleeve 31 are protected by the macroelectrode outer tube 1).

[0059] Furthermore, the rear end block 24 has an internal thread, and the stopper block 23 has an external thread, and the microelectrode connecting wire 4 can be fixed when the stopper block 23 is tightened. The stopper structure in CN210020860U can be referred to.

[0060] Furthermore, both the macroelectrode connecting wire 3 and the microelectrode connecting wire 4 are soft tubes (medical plastic products). It should be noted that applying a force along the length direction to the microelectrode connecting wire 4 can still push the microelectrode connecting wire 4 to move.

[0061] Furthermore, the front end of the microelectrode wire bundle 11 is bifurcated and radiates outward in a scattered manner, and is made of platinum alloy or platinum-iridium alloy, and has a certain elasticity, which facilitates the folding and unfolding of the front end of the microelectrode wire bundle 11. The microelectrode wire bundle 11 is composed of a plurality of wires.

[0062] Furthermore, the microelectrode outer tube 13 is not provided at the position where the front end of the inner tube 10 corresponds to the bifurcation of the front end of the microelectrode wire bundle 11, thereby increasing the storage space of the front end of the microelectrode wire bundle 11 (that is, increasing the gap between the microelectrode wire bundle 11 and the inner tube 10).

[0063] The first connection contact 32 and the second connection contact 42 are respectively used to connect to corresponding devices to form a stimulation current or input the collected signal into the device.

[0064] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. 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. A macro-micro composite electrode, characterized in that: include: The macroelectrode outer tube (1) is a hollow structure, and has a macroelectrode ring (12) at the front end. The inner tube (10) is provided inside the macroelectrode outer tube (1), and a microelectrode outer tube (13) is arranged inside the inner tube (10). The microelectrode outer tube (13) has a microelectrode wire bundle (11), and the microelectrode outer tube (13) together with the microelectrode wire bundle (11) can slide inside the inner tube (10); The connector assembly (2) comprises a hollow sleeve (21), a connecting block (22) being arranged in the sleeve (21), the two ends of the sleeve (21) being respectively a front end block (25) and a rear end block (24), the rear end block (24) being hollow and provided with a limit block (23); the microelectrode wire bundle (11) passes through the wall of the microelectrode inner tube (10) and then extends into the inner tube (10) after passing through the front end block (25); A macro electrode connecting wire (3) passes through the connector assembly (2) and is connected to the macro electrode outer tube (1) through a wire protection sleeve (31); the end of the macro electrode connecting wire (3) has a first connecting contact (32); the first connecting contact (32) is electrically connected to the macro electrode ring (12); the connecting wires are sequentially led out from the first connecting contact (32) and connected to the macro electrode ring (12) through the inside of the macro electrode connecting wire (3), the inside of the wire protection sleeve (31), and the gap between the macro electrode outer tube (1) and the inner tube (10); the macro electrode connecting wire (3) only passes through the connecting block (22) but is not fixed to the connecting block (22); A microelectrode connecting wire (4), wherein the microelectrode connecting wire (4) extends from one end of the rear end block (24) into the sleeve (21) and is fixed to the connecting block (22); the microelectrode outer tube (13) extends from one end of the front end block (25) into the connector assembly (2) and is fixedly connected to the microelectrode connecting wire (4); the microelectrode outer tube (13) can be driven to move by pushing and pulling the microelectrode connecting wire (4), so that the front end of the microelectrode wire bundle (11) extends out from or retracts from the front end of the macroelectrode outer tube (1); the end of the microelectrode connecting wire (4) has a second connecting contact (42), and the second connecting contact (42) is electrically connected to the microelectrode wire bundle (11); the limit block (23) can fix the microelectrode connecting wire (4) or release the fixation of the microelectrode connecting wire (4).

2. The macro-micro composite electrode according to claim 1, characterized in that: The connecting wire between the macroelectrode connecting wire (3) and the macroelectrode outer tube (1) is located in a wire protection sleeve (31); the inner tube (10) and the wire protection sleeve (31) between the macroelectrode outer tube (1) and the front end block (25) are both located inside the outer sleeve (19); and the two ends of the wire protection sleeve (31) extend into the macroelectrode outer tube (1) and the macroelectrode connecting wire (3), respectively.

3. The macro-micro composite electrode according to claim 1, characterized in that: The wall of the sleeve (21) is made of a transparent material and has scales on the wall.

4. The macro-micro composite electrode according to claim 1, characterized in that: The front end block (25) is fixedly connected to the outer sleeve (19), the wire protection sleeve (31) and the microelectrode outer tube (13) and inner tube (10) are located inside the outer sleeve (19), and the macroelectrode outer tube (1) extends into the outer sleeve (19).

5. The macro-micro composite electrode according to claim 1, characterized in that: The rear end block (24) has an internal thread, and the limit block (23) has an external thread. When the limit block (23) is tightened, the microelectrode connecting wire (4) can be fixed.

6. The macro-micro composite electrode according to claim 1, characterized in that: The macroelectrode connecting wire (3) and the microelectrode connecting wire (4) are both soft tubes.

7. The macro-micro composite electrode according to claim 1, characterized in that: The microelectrode wire bundle (11) has a forked front end, emits outward in a scattered manner, and is made of platinum alloy, platinum-iridium alloy or nickel-cobalt alloy.

8. The macro-micro composite electrode according to claim 1, characterized in that: The microelectrode outer tube (13) is not provided at the position where the front end of the inner tube (10) corresponds to the bifurcated position of the front end of the microelectrode wire bundle (11).

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