Electrode assembly

Abstract

The utility model discloses an electrode assembly. The electrode assembly comprises a catheter, an electrode contact, a supporting piece and an anti-bending piece. Wherein the catheter is internally provided with a hollow channel extending in the axial direction of the catheter, the hollow channel comprises a supporting section and an electrode contact, the electrode contact is arranged on the outer surface of the catheter and corresponds to the supporting section, the supporting piece is arranged in the hollow channel and extends in the extending direction of the hollow channel so as to support the supporting section, and one end of the anti-bending piece is fixedly arranged. And the other end of the supporting piece is overlapped with the supporting piece in the extending direction of the hollow channel, abuts against the supporting piece and is connected with the supporting piece in a bonding mode. According to the technical scheme, the electrode contact and other structures installed on the catheter can be prevented from being damaged due to stretching and bending.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an electrode assembly. BACKGROUND

[0002] Stereoelectroencephalography (SEEG) is a technique used to diagnose and treat brain disorders such as epilepsy. It helps doctors determine the exact location of abnormal electrical activity by placing an electrode assembly in the brain to record the electrical physiological signals inside the brain.

[0003] Since the electrode assembly needs to be placed in the human brain to record the electrical physiological signals inside the brain, in order to reduce damage to human tissue, in the related art, the electrode assembly generally includes an electrode contact and a catheter, and the electrode contact is arranged on the outer surface of the catheter. The catheter is generally soft, which can reduce damage to human tissue, but its tensile strength and bending strength are poor, and during use, the catheter is prone to stretching and bending, causing the electrode contact and other structures mounted on the catheter to be damaged by stretching and bending. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the present application is to provide an electrode assembly, which aims to improve the existing electrode assembly, which has poor tensile strength and bending strength, and during use, the catheter is prone to stretching and bending, causing the electrode contact and other structures mounted on the catheter to be damaged by stretching and bending.

[0005] To achieve the above-mentioned purpose, the electrode assembly provided by the present application includes a catheter, an electrode contact, a support member and a bending-resistant member; wherein,

[0006] The catheter has a hollow channel arranged along the axial direction of the catheter inside, and the hollow channel includes a support section;

[0007] The electrode contact is arranged on the outer surface of the catheter and corresponds to the support section;

[0008] The support member is arranged in the hollow channel and extends along the extension direction of the hollow channel to support the support section;

[0009] The bending-resistant member is fixed at one end and overlaps with the support member in the extension direction of the hollow channel, and the two abut against each other and are connected by adhesion.

[0010] In some embodiments of the present application, the length of the bending-resistant member overlapping with the support member in the extension direction of the hollow channel is defined as the overlapping length, and the length of the support member in the extension direction of the hollow channel is defined as the support length, and the overlapping length is 0.28-0.48 times the support length.

[0011] In some embodiments of the present application, the electrode assembly further comprises a filling material, which at least fills the support section to achieve an adhesive connection between the bending-resistant member and the support member, and a filling layer formed by curing of the filling material supports the support section.

[0012] In some embodiments of the present application, the support section is provided with an opening on the side away from the bending-resistant member, the support member extends out of the hollow channel through the opening, and the filling material further forms a sealing head wrapping the support member at the opening.

[0013] In some embodiments of the present application, the sealing head is hemispherical.

[0014] In some embodiments of the present application, the support section is provided with an opening on the side away from the bending-resistant member, and the electrode assembly further comprises an electrode head end, one side of the electrode head end is provided with a plug-in part, and the plug-in part is plug-in matched with the hollow channel through the opening.

[0015] In some embodiments of the present application, the plug-in part is provided with a receiving groove, and the support member is plug-in matched with the receiving groove.

[0016] In some embodiments of the present application, the electrode contact is a ring structure, and the electrode contact is arranged around the outer surface of the catheter.

[0017] In some embodiments of the present application, the number of electrode contacts is multiple, and multiple electrode contacts are arranged on the outer surface of the support section at intervals along the axial direction of the catheter and respectively collect electrophysiological signals.

[0018] In some embodiments of the present application, the support section is provided with multiple wire passing holes, multiple wire passing holes are respectively communicated with the hollow channel, and multiple wire passing holes and multiple electrode contacts are one-to-one correspondingly arranged;

[0019] The electrode assembly further comprises a plug-in part and multiple wires, one end of each wire is connected with the plug-in part, the other end of each wire extends into the hollow channel and is connected with the corresponding electrode contact through one wire passing hole, so that the plug-in part is electrically connected with multiple electrode contacts through multiple wires respectively.

[0020] In some embodiments of the present application, multiple wire passing holes are distributed at intervals along the axial direction of the catheter on the outer surface of the support section.

[0021] Alternatively, multiple wire passing holes are helically distributed around the circumference of the catheter on the outer surface of the support section.

[0022] In some embodiments of the present application, the plug-in part is connected with the catheter through a silica gel hose.

[0023] The electrode assembly provided by the present application has the advantages that the support member provides support force for the support section, so that the support section with the electrode contact installed thereon is not easy to be bent, the bending strength of the support section is improved, the electrode contact arranged on the surface of the catheter can be prevented from being damaged due to bending of the support section, one end of the bending-resistant member is fixedly arranged, the other end of the bending-resistant member is adhesively fixed to the support member, when the catheter is subjected to force in the extension direction of the hollow channel, the catheter can be prevented from being stretched and lengthened by interaction between the bending-resistant member and the support member, the tensile strength of the catheter is improved, and the electrode contact and other structures installed on the catheter can be prevented from being damaged due to stretching of the catheter. It can be seen that the technical scheme of the present application improves the tensile strength and the bending strength, so that the catheter is not easy to be stretched and bent during use, and thus the electrode contact and other structures installed on the catheter can be prevented from being damaged due to stretching and bending. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the drawings shown.

[0025] Figure 1 FIG. 1 is a structural schematic view of an electrode assembly according to an embodiment of the present application;

[0026] Figure 2 FIG. 2 is a partial structural sectional view of the electrode assembly according to the embodiment of the present application; Figure 1

[0027] Figure 3 FIG. 3 is an enlarged view of portion A in FIG. 2; Figure 2

[0028] Figure 4 FIG. 4 is a structural schematic view of a catheter according to an embodiment of the present application; Figure 1

[0029] Figure 5 FIG. 5 is a structural schematic view of another embodiment of the catheter according to the present application; Figure 1

[0030] FIG. 6 is a partial structural sectional view of another embodiment of the electrode assembly according to the present application. Figure 6 BRIEF DESCRIPTION OF DRAWINGS

[0031]

[0032] ​​​​100, electrode assembly; 10, catheter; 11, hollow channel; 111, support section; 112, opening; 113, wire passing hole; 20, electrode contact; 30, support; 40, anti-bending piece; 50, filling layer; 51, sealing head; 60, plug-in piece; 70, wire; 80, silicone hose; 90, electrode head end; 91, plug-in part; 92, accommodating groove.

[0033] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0037] Stereoelectroencephalography (SEEG) is a technique used to diagnose and treat brain disorders such as epilepsy. It helps doctors determine the exact location of abnormal electrical activity by placing electrode assemblies in the brain to record electrical physiological signals inside the brain.

[0038] Since the electrode assembly needs to be placed in the brain of a human being to record the electrical physiological signals inside the brain, in order to reduce the damage to the human tissue, in the related art, the electrode assembly generally comprises an electrode contact and a catheter, and the electrode contact is arranged on the outer surface of the catheter. The catheter is generally soft in material, which can reduce the damage to the human tissue, but the tensile strength and the bending strength of the catheter are poor, and in the use process, the catheter is easy to stretch and bend, resulting in that the electrode contact and other structures mounted on the catheter are damaged by stretching and bending.

[0039] Embodiments of the present application provide an electrode assembly 100 which can be applied to stereotactic electroencephalogram (SEEG) technology, which can also be referred to as a deep electrode, an intracranial deep electrode, etc., which can be placed in the brain of a human being and record the electrical physiological signals inside the brain. In order to improve the tensile strength and the bending strength of the electrode assembly 100, the electrode assembly 100 is improved in the present application. Please refer to Figures 1 to 3 In embodiments of the present application, the electrode assembly 100 comprises a catheter 10, an electrode contact 20, a support 30 and a bending-resistant piece 40.

[0040] The catheter 10 has a hollow channel 11 arranged along the axial direction of the catheter 10 inside the catheter 10, and the hollow channel 11 comprises a support section 111. The hollow channel 11 inside the catheter 10 is generally through both ends, that is, the hollow channel 11 generally penetrates the catheter 10 along the axial direction of the catheter 10. The material of the catheter 10 is soft, and the catheter 10 can be a hollow tube made of TPU or the like.

[0041] The electrode contact 20 is arranged on the outer surface of the catheter 10 and corresponds to the support section 111. Since the electrode contact 20 is arranged on the outer surface of the catheter 10, after the electrode assembly 100 is placed in the brain, the electrode contact 20 can directly contact the brain tissue to collect and transmit the electrical physiological signals of the deep brain tissue of the patient.

[0042] The support 30 is arranged in the hollow channel 11 and extends along the extension direction of the hollow channel 11 to support the support section 111. The bending-resistant piece 40 is fixedly arranged at one end and overlaps with the support 30 in the extension direction of the hollow channel 11, and abuts against each other, and is connected with the support 30 by adhesion.

[0043] The support 30 is arranged in the hollow channel 11 in various specific manners. The support 30 can be fixed to the hollow channel 11 by insertion, and fixedly connected to the pipe wall of the hollow channel 11 by adhesion. The support 30 can be accommodated in the hollow channel 11, and fixed to the hollow channel 11 by filling the gap between the support 30 and the pipe wall of the hollow channel 11 with a filling material. It should be emphasized that the main purpose of arranging the support 30 in the hollow channel 11 is to support the support section 111. That is, the support 30 can not support other parts of the hollow channel 11 except the support section 111. Generally, the length of the support 30 is greater than the length of the support section 111, so as to better support the support section 111. The material of the support 30 can be nickel-titanium alloy, tungsten rod, etc., so that the support 30 has sufficient strength to support the support section 111. The material of the support 30 can also be a shape memory material, such as shape memory alloy material or shape memory ceramic material, etc. When the support 30 is deformed by external force and the amplitude of the deformation does not exceed the bending limit of the shape memory material, the support 30 can restore the original shape.

[0044] The anti-bending member 40 is an elongated wire, and the material thereof can be nylon, Kevlar, etc., which has good tensile properties. The fixed arrangement of one end of the anti-bending member 40 means that one end of the anti-bending member 40 is fixedly connected to the catheter 10 or other components of the electrode assembly 100, and will not move relatively. Specifically, in some examples, the catheter 10 is provided with a fixing member at the end away from the electrode contact 20, and the fixing member is fixedly connected to the anti-bending member 40 to fix one end of the anti-bending member 40.

[0045] The other end of the anti-bending member 40 overlaps the support 30 in the extension direction of the hollow channel 11, and the mutual abutment means that at least part of the anti-bending member 40 is located in the support section 111 of the hollow channel 11, and the part of the anti-bending member 40 is adjacent to the support 30. Generally, the part of the anti-bending member 40 also contacts the support 30 in parallel, or the part of the anti-bending member 40 is arranged around the side of the support 30.

[0046] The connection of the anti-bending member 40 to the support 30 by adhesion means that the anti-bending member 40 and the support 30 are fixed together by an adhesive. That is, the other end of the anti-bending member 40 is also fixedly arranged by the support 30.

[0047] The electrode assembly 100 provided by the embodiments of the present application has the support piece 30 providing support force for the support section 111, so that the support section 111, on which the electrode contact 20 is mounted, is not easy to bend, the bending strength of the support section 111 is improved, and the electrode contact 20 arranged on the surface of the catheter 10 can be prevented from being damaged due to bending of the support section 111. Since one end of the bending-resistant piece 40 is fixedly arranged and the other end is adhesively fixed to the support piece 30, when the catheter 10 is subjected to force in the extension direction of the hollow channel 11, the catheter 10 can be prevented from being stretched and lengthened by the interaction between the bending-resistant piece 40 and the support piece 30, the tensile strength of the catheter 10 is improved, and the electrode contact 20 and other structures mounted on the catheter 10 can be prevented from being damaged due to stretching of the catheter 10. It can be seen that the technical solution of the present application improves the tensile strength and the bending strength, so that the catheter 10 is not easy to stretch and bend during use, thereby preventing the electrode contact 20 and other structures mounted on the catheter 10 from being damaged due to stretching and bending.

[0048] Further, the electrode assembly 100 provided by the present application not only significantly enhances the tensile strength and the bending strength, but also has a certain hardness characteristic of the support section 111, which is particularly important for the performance of the electrode assembly 100 during brain implantation, and is specifically manifested in the following aspects.

[0049] 1. Improving the accuracy of implantation operation: The electrode assembly 100 has appropriate hardness, which can keep the shape stable during the operation, which helps the doctor to control the position and direction of the electrode assembly 100 more accurately, and ensures that it can smoothly reach the predetermined target position. This accuracy is particularly important for brain surgery that requires high precision, and can significantly improve the success rate of the operation.

[0050] 2. Reducing surgical trauma: The appropriate hardness design allows the electrode assembly 100 to be more smooth and hard when entering the brain tissue, reducing the pressure and damage to the surrounding healthy tissue, thereby reducing unnecessary harm that may be caused during the operation. This is of great significance to the protection of sensitive brain areas, especially those close to important functional areas.

[0051] 3. Enhancing patient safety: The hardness characteristic of the electrode assembly 100 also helps to prevent it from bending or deforming accidentally during implantation, avoiding various complications such as bleeding and infection that may be caused thereby, thereby improving the safety of the entire operation process.

[0052] 4. Improving patient comfort: After implantation, the electrode assembly 100 can maintain a stable shape and will not produce unnecessary displacement or stimulation due to slight movement of the patient's head, improving the comfort of the patient and reducing postoperative discomfort.

[0053] It can be understood that other parts of the catheter 10 are softer than the support section 111, so that the electrode assembly 100 has flexibility and is not easily damaged.

[0054] In some examples, as shown in Figure 2 The length of the anti-bending member 40 overlapping with the support member 30 in the extension direction of the hollow channel 11 is defined as the overlapping length, and the length of the support member 30 in the extension direction of the hollow channel 11 is defined as the support length. The overlapping length is 0.28-0.48 times the support length.

[0055] In this way, the stability of the bonding between the anti-bending member 40 and the support member 30 is ensured by limiting the relationship between the overlapping length and the support length, so as to avoid the problem that the anti-bending member 40 and the support member 30 are separated from each other and the tensile strength of the catheter 10 is reduced when the catheter 10 is subjected to excessive force in the extension direction of the hollow channel 11.

[0056] In some preferred examples, the overlapping length is 0.38 times the support length.

[0057] In some preferred examples, the overlapping length is 10 mm.

[0058] In some examples, as shown in Figure 2 and Figure 3 The electrode assembly 100 further includes a filling material, which at least fills the support section 111 to achieve the adhesive connection between the anti-bending member 40 and the support member 30, and the filling layer 50 formed by curing the filling material supports the support section 111.

[0059] It should be emphasized that the electrode contact 20 is provided on the outer surface of the catheter 10 and corresponds to the support section 111, and the filling layer 50 formed by curing the filling material supports the support section 111, that is, the filling layer 50 also provides support force for the electrode contact 20 through the catheter 10.

[0060] The filling material includes but is not limited to epoxy resin, silicone rubber, etc., and is intended to ensure the reliability of the bonding between the support member 30 and the anti-bending member 40, and to form a stable filling layer 50 to stably support the support section 111.

[0061] In this way, the bending strength of the support section 111 is further enhanced by the filling layer 50 formed after the curing of the filling material, and the catheter 10 is sealed to prevent human tissue fluid from entering the hollow channel 11 and affecting the stability of the internal structure of the catheter 10.

[0062] In some examples, as shown in Figure 2 and Figure 3As shown, the support section 111 is provided with an opening 112 on the side away from the bending-resistant piece 40, and the support piece 30 extends out of the hollow channel 11 through the opening 112. The filling material also forms a sealing head 51 at the opening 112 to wrap the support piece 30.

[0063] In this way, the strength of the sealing head 51 is improved by the support section 111, i.e., the strength of the end of the electrode assembly 100 is improved, which facilitates the insertion of the electrode assembly 100 into the human head. Moreover, the filling material has a lower hardness than the support piece 30, which reduces the damage to the human tissue caused by the electrode assembly 100.

[0064] Preferably, in some examples, as shown in Figure 2 and Figure 3 As shown, the diameter of the sealing head 51 is the same as the outer diameter of the catheter 10, which better seals the hollow channel 11.

[0065] Preferably, in some examples, as shown in Figure 2 and Figure 3 As shown, the sealing head 51 is hemispherical to reduce the sharp end and further reduce the damage to the human tissue caused by the electrode assembly 100.

[0066] In some examples, as shown in Figure 6 As shown, the support section 111 is provided with an opening 112 on the side away from the bending-resistant piece 40, and the electrode head end 90 is provided with a plug-in portion 91 on one side, which is plugged into the hollow channel 11 through the opening 112.

[0067] It should be noted that the electrode head end 90 has the same function as the electrode contact 20 mentioned above. In this way, the electrode assembly 100 can more comprehensively collect and transmit the electrophysiological signals of the deep brain tissue of the patient, and the electrode head end 90 can enhance the strength of the head end of the electrode assembly 100, which facilitates the insertion of the electrode assembly 100 into the head of the patient.

[0068] In some examples, as shown in Figure 6 As shown, the plug-in portion 91 is provided with a receiving groove 92, and the support piece 30 is plugged into the receiving groove 92. In this way, the stability of the installation of the electrode head end 90 on the catheter 10 is improved.

[0069] In some examples, the support piece 30 also extends out of the hollow channel 11 through the opening 112 and is plugged into the receiving groove 92.

[0070] In some examples, as shown in Figure 1As shown, the electrode contact 20 is in a ring structure, and the electrode contact 20 is arranged around the outer surface of the catheter 10. In this way, the production of the electrode contact 20 is facilitated, and the electrode contact 20 is facilitated to be mounted on the outer surface of the catheter 10, thereby improving the production efficiency of the electrode assembly 100.

[0071] In some examples, the outer surface of the catheter 10 is further recessed with a ring-shaped groove, and the electrode contact 20 is at least partially accommodated in the groove. In this way, the smoothness of the surface of the catheter 10 is improved to reduce the resistance of the electrode assembly 100 when placed in the brain, and the electrode contact 20 cooperates with the groove wall to improve the stability of the electrode contact 20 mounted on the outer surface of the catheter 10.

[0072] The material of the electrode contact 20 includes but is not limited to platinum-iridium alloy, SUS304, etc.

[0073] In some examples, as shown in Figure 1 As shown, the number of electrode contacts 20 is multiple, and the multiple electrode contacts 20 are arranged on the outer surface of the support section 111 along the axial direction of the catheter 10 and respectively collect electrophysiological signals.

[0074] In this way, the electrophysiological signals of the brain are respectively collected by the multiple electrode contacts 20, so that the electrode assembly 100 can simultaneously collect electrophysiological signals of different depths of the brain, thereby improving the working efficiency of the electrode assembly 100, shortening the diagnosis or treatment time, and reducing the damage of the electrode assembly 100 to the human body.

[0075] It should be noted that when the electrode assembly 100 is applied to the stereotactic electroencephalogram (SEEG) technology, the electrode assembly 100 is used in conjunction with an electroencephalogram instrument.

[0076] In some examples, as shown in Figure 1 and Figure 5 As shown, the support section 111 is provided with multiple wire passing holes 113, the multiple wire passing holes 113 are respectively in communication with the hollow channel 11, and the multiple wire passing holes 113 are arranged in one-to-one correspondence with the multiple electrode contacts 20; the electrode assembly 100 further includes a plug-in piece 60 and multiple wires 70, one end of each wire 70 is connected with the plug-in piece 60, the other end of each wire 70 extends into the hollow channel 11 and is connected with the corresponding electrode contact 20 through a wire passing hole 113, so that the plug-in piece 60 is electrically connected with the multiple electrode contacts 20 through the multiple wires 70.

[0077] In this way, the multiple electrode contacts 20 are facilitated to be connected with the plug-in piece 60, the integration of the electrode assembly 100 is improved, and the electrode assembly 100 is facilitated to be connected with the electroencephalogram instrument.

[0078] Considering that the support 30 will come into contact with the wire 70, in some examples, the surface of the support 30 is also provided with an insulating coating to prevent the support 30 from being electrically connected to the wire 70, which could affect the diagnostic or treatment effect.

[0079] Based on the above description of the anti-bending member 40, one end of the anti-bending member 40 can be fixedly connected to the connector 60.

[0080] In some examples, such as Figure 4 As shown, multiple wire through holes 113 are distributed at intervals along the axial direction of the conduit 10 on the outer surface of the support section 111. This arrangement is intended to facilitate the connection of the wire 70 to the electrode contact 20, and also to facilitate drilling, thereby improving the installation efficiency of the electrode contact 20.

[0081] In some examples, such as Figure 5 As shown, multiple wire-passing holes 113 are spirally distributed around the circumference of the conduit 10 on the outer surface of the support section 111. This arrangement aims to optimize the distribution of the multiple wire-passing holes 113. The spirally distributed wire-passing holes 113 can more evenly disperse the stress inside and outside the conduit 10, preventing material fatigue or fracture caused by local stress concentration, thereby improving the overall mechanical properties of the conduit 10. By avoiding the wire-passing holes 113 being arranged in a straight line, the structural integrity of the conduit 10 can be better maintained, ensuring that it can maintain its shape stability when subjected to external tension or bending, and will not easily deform or break, thereby reducing the impact of the multiple wire-passing holes 113 on the tensile strength, bending strength, etc. of the conduit 10. At the same time, by optimizing the distribution of the multiple wire-passing holes 113, the distribution of multiple wires 70 in the hollow channel 11 can be optimized, which is conducive to the rational arrangement of the wires 70 and avoids the messy wiring of multiple wires 70 in the hollow channel 11. The spiral distribution design also allows the wires 70 to pass through the various wire holes 113 more smoothly inside the conduit 10, reducing the tangling and friction between the wires 70 and improving the working efficiency and reliability of the electrode assembly 100.

[0082] Electrode contacts 20 are typically electrically connected to wires 70 by welding.

[0083] In some examples, such as Figure 1 As shown, the connector 60 is connected to the conduit 10 via the silicone hose 80.

[0084] It is important to emphasize that there can be multiple silicone tubing 80s, and the diameter of each silicone tubing 80 can be different. For example, the connector 60 can connect to a larger silicone tubing 80, the larger silicone tubing 80 can connect to a smaller silicone tubing 80, and the smaller silicone tubing 80 can then connect to the conduit 10. This allows the diameter of the electrode needle assembly 100 to gradually change, facilitating the installation of the electrode assembly 100 and making it easier for the operator to use.

[0085] The silica gel hose 80 can be sleeved with the plug-in part 10 and the catheter 10 respectively, and an adhesive is added at the connection to bond them together. Further, a silica gel sleeve can be sleeved at the connection.

[0086] In this way, the structure of the electrode assembly 100 is optimized to facilitate the use of the electrode assembly 100 by the operator.

[0087] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields under the inventive concept of the present application is included in the patent protection scope of the present application.

Claims

1. An electrode assembly, characterized in that, The electrode assembly includes a conduit, electrode contacts, a support, and a bending-resistant component; wherein... The conduit has an internal hollow channel extending along the axial direction of the conduit, and the hollow channel includes a support section; The electrode contacts are located on the outer surface of the conduit and are positioned corresponding to the support section. The support member is disposed in the hollow channel and extends along the extension direction of the hollow channel to support the support segment; The bending-resistant member is fixed at one end and overlaps with the support member in the extension direction of the hollow channel at the other end, and abuts against each other, and is connected to the support member by adhesive.

2. The electrode assembly as described in claim 1, characterized in that, The overlap length between the anti-bending member and the support member in the extension direction of the hollow channel is defined as the overlap length, and the length of the support member in the extension direction of the hollow channel is defined as the support length. The overlap length is 0.28 to 0.48 times the support length.

3. The electrode assembly as described in claim 1, characterized in that, The electrode assembly further includes a filler material that fills at least the support segment to achieve an adhesive connection between the bending member and the support member, and the support segment is supported by a filler layer formed by the curing of the filler material.

4. The electrode assembly as described in claim 3, characterized in that, The support section has an opening on the side away from the bending member, the support member extends out of the hollow channel through the opening, and the filling material also forms a sealing head at the opening to wrap the support member.

5. The electrode assembly as described in claim 4, characterized in that, The sealing head is hemispherical.

6. The electrode assembly as described in claim 3, characterized in that, The support section has an opening on the side away from the bending member. The electrode assembly also includes an electrode head end, and a plug-in part is provided on one side of the electrode head end. The plug-in part is inserted into the hollow channel through the opening.

7. The electrode assembly as claimed in claim 6, characterized in that, The insertion part is provided with a receiving groove, and the support member is inserted into the receiving groove.

8. The electrode assembly as claimed in claim 1, characterized in that, The electrode contacts are in a ring shape and are arranged around the outer surface of the conduit.

9. The electrode assembly as claimed in claim 8, characterized in that, The number of electrode contacts is multiple, and the multiple electrode contacts are arranged at intervals along the axial direction of the catheter on the outer surface of the support section, and respectively collect electrophysiological signals.

10. The electrode assembly as claimed in claim 9, characterized in that, The support section has multiple wire-passing holes, which are respectively connected to the hollow channel, and each of the multiple wire-passing holes is set to correspond one-to-one with a multiple of the electrode contacts; The electrode assembly also includes a connector and multiple wires. One end of each wire is connected to the connector, and the other end of each wire extends into the hollow channel and is connected to the corresponding electrode contact through a wire hole, so that the connector is electrically connected to multiple electrode contacts through the multiple wires respectively.

11. The electrode assembly as claimed in claim 10, characterized in that, The plurality of the wire-passing holes are distributed at intervals along the axial direction of the conduit on the outer surface of the support section; Alternatively, multiple of the wire-passing holes are spirally distributed around the circumference of the conduit on the outer surface of the support section.

12. The electrode assembly as claimed in claim 10, characterized in that, The connector is connected to the conduit via a silicone hose.

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