Electrode catheter structure capable of releasing energy in multiple directions
By designing a multi-layer electrode assembly in the electrode conduit, including a first inner electrode, a second inner electrode, a first outer electrode and a second outer electrode, the ability to release shock waves in multiple directions is achieved, solving the problems of complex arrangement and inflexible structure of the electrode assembly in the prior art, and improving the flexibility and efficiency of energy release.
Patent Information
- Application Number
- CN202421388561.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-18
AI Technical Summary
When existing electrode conduits release shock waves in multiple directions, multiple electrode assemblies need to be installed, resulting in complex arrangements and large number of wires, and inflexible structures that cannot be expanded to more directions.
An electrode conduit structure for multi-directional energy release is adopted, including a conduit and an electrode assembly, which consists of a first inner electrode, a second inner electrode, a first outer electrode and a second outer electrode, through which shock waves in multiple directions are formed in the conductive dielectric.
The ability of a single electrode assembly to release shock waves in multiple directions is achieved, reducing the number of wires and catheter size, and improving the flexibility and efficiency of energy release.
Smart Images
Figure CN222853949U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment and relates to an electrode catheter, in particular to an electrode catheter structure capable of releasing energy in multiple directions. Background Art
[0002] With the development of cardiovascular interventional technology, the technologies for treating vascular stenosis are becoming increasingly diverse. For lesions with high degree of stenosis and severe calcification, existing technologies have developed devices that can generate shock waves, thereby opening up the hardened or calcified lesions in the stenotic blood vessels.
[0003] The electrode assembly is an important component for releasing shock waves. Two electrodes are placed in a conductive medium and connected to the positive and negative poles of a power source and energized. The electrodes form a conductive breakdown through the conductive medium, thereby forming a shock wave and generating energy release. In the prior art, a single electrode assembly usually generates a shock wave in one direction. When it is necessary to release shock waves in multiple directions, multiple electrode assemblies are often required. On the one hand, more electrode assemblies need to be arranged, and on the other hand, the number of wires is also large. Of course, a single electrode assembly usually generates a structure of shock waves in two directions, but the structure is not flexible enough and cannot be further expanded to more directions. Summary of the invention
[0004] The utility model aims to provide an electrode catheter structure capable of releasing energy in multiple directions, such as an electrode catheter structure for treating vascular lesions.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] An electrode catheter structure for multi-directional energy release includes a catheter and an electrode assembly, wherein the electrode assembly is arranged on the periphery of the catheter, and the electrode assembly includes:
[0007] First inner electrode, second inner electrode: the first inner electrode and the second inner electrode are used to connect the positive electrode and the negative electrode of the power supply respectively;
[0008] First outer electrode: the first outer electrode is arranged on the outer periphery of the first inner electrode and the second inner electrode,
[0009] Second external electrode: The second external electrode is arranged on the periphery of the first external electrode,
[0010] The first inner electrode, the second inner electrode, the first outer electrode and the non-conductive parts of the second outer electrode are insulated from each other, the first outer electrode includes at least one first conductive segment, and the second outer electrode includes at least one second conductive segment. When the electrode assembly is placed in a conductive medium and the first inner electrode and the second inner electrode are energized, shock waves are formed in multiple directions between the first inner electrode and the first conductive segment, between the first conductive segment and the second conductive segment, and between the first conductive segment and the second inner electrode.
[0011] Preferably, in the above technical solution, when a plurality of first conductive segments are provided, the plurality of first conductive segments are distributed on a first circumference; when a plurality of second conductive segments are provided, the plurality of second conductive segments are distributed on a second circumference, and the second circumference is located outside the first circumference.
[0012] Preferably, in the above technical solution, 2 to 3 first conductive segments are provided.
[0013] Preferably, in the above technical solution, 1-2 second conductive segments are provided.
[0014] Preferably, in the above technical solution, the multiple directions are ≥ 3, such as 3 directions, 4 directions, 5 directions, 6 directions, or even more.
[0015] Preferably, in the above technical solution, the first inner electrode and the second inner electrode are distributed in the circumferential direction of the catheter at an interval greater than 0° and less than or equal to 180°.
[0016] Preferably, in the above technical solution, the cross-sections of the first inner electrode and the second inner electrode are circular, elliptical or arc-shaped.
[0017] Preferably, in the above technical solution, the cross-sections of the first conductive segment and the second conductive segment are arc-shaped.
[0018] Preferably, in the above technical solution, two first conductive segments are provided, and one second conductive segment is provided, and a shock wave in a first direction is formed between the first inner electrode and one first conductive segment and between one first conductive segment and the second conductive segment; a shock wave in a second direction is formed between the second conductive segment and another first conductive segment; and a shock wave in a third direction is formed between another first conductive segment and the second inner electrode.
[0019] Preferably, in the above technical solution, two first conductive segments are provided, two second conductive segments are provided, a shock wave in a first direction is formed between the first inner electrode and one of the first conductive segments; a shock wave in a second direction is formed between one of the first conductive segments and one of the second conductive segments; a shock wave in a third direction is formed between another of the second conductive segments and another of the first conductive segments; a shock wave in a fourth direction is formed between one of the second conductive segments and another of the second conductive segments and between another of the first conductive segments and the second inner electrode.
[0020] Preferably, in the above technical solution, three first conductive segments are provided, two second conductive segments are provided, a shock wave in a first direction is formed between the first inner electrode and one first conductive segment; a shock wave in a second direction is formed between one first conductive segment and one second conductive segment; a shock wave in a third direction is formed between one second conductive segment and another first conductive segment; a shock wave in a fourth direction is formed between another first conductive segment and another second conductive segment; a shock wave in a fifth direction is formed between another second conductive segment and another first conductive segment; and a shock wave in a sixth direction is formed between another first conductive segment and the second inner electrode.
[0021] Preferably, in the above technical solution, a plurality of electrode assemblies are arranged along the axial direction of the catheter.
[0022] Preferably, in the above technical solution, the electrode catheter structure further comprises a balloon for filling with a conductive medium, the balloon is arranged on the catheter, and the electrode assembly is arranged in the balloon.
[0023] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:
[0024] The utility model realizes multi-directional energy output of a single electrode assembly through an inner electrode, two layers of outer electrodes, and a total of three layers of inner and outer electrodes, which is more flexible in selecting the direction of energy release and increasing or decreasing; in addition, the size in the length direction is reduced, the number of wires is reduced, and the exhaust effect of the catheter is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Attached Figure 1 is a schematic diagram of the electrode catheter structure of this embodiment;
[0026] Attached Figure 2 is a radial cross-sectional schematic diagram of the electrode assembly of Example 1;
[0027] Attached Figure 3 is a radial cross-sectional schematic diagram of the electrode assembly of Example 2;
[0028] Attached Figure 4 It is a schematic radial cross-sectional view of the electrode assembly of Example 3.
[0029] In the above attached figure:
[0030] 1. Catheter;
[0031] 2. electrode assembly; 20. first inner electrode; 21. second inner electrode; 220-226. first conductive segment; 230-234. second conductive segment;
[0032] 3. Insulation layer. DETAILED DESCRIPTION
[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 invention 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 present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0035] like Figure 1-Figure 4 The electrode catheter structure for multi-directional energy release shown in the figure comprises a catheter 1 and an electrode assembly 2. The electrode assembly is arranged on the periphery of the catheter 1. Usually, a plurality of electrode assemblies 2 are arranged along the axial direction (length direction) of the catheter 1. Figure 1 Take 2 as examples.
[0036] In this embodiment, the electrode assembly includes a first inner electrode 20, a second inner electrode 21, a first outer electrode and a second outer electrode, and the non-conductive parts of the first inner electrode 20, the second inner electrode 21, the first outer electrode and the second outer electrode are insulated from each other, that is, each electrode only exposes the part that needs to be conductive. Specifically:
[0037] The first inner electrode 20 and the second inner electrode 21 are used to connect the positive electrode and the negative electrode of the power supply, respectively, such as the first inner electrode 20 is connected to the positive electrode of the power supply, and the second inner electrode 21 is connected to the negative electrode of the power supply. The first inner electrode 20 and the second inner electrode 21 are distributed in the circumferential direction of the catheter at intervals greater than 0° and less than or equal to 180°, such as 60°, 180°, etc. as shown in the figure, and the first inner electrode 20 and the second inner electrode 21 are insulated. The cross-sections of the first inner electrode 20 and the second inner electrode 21 are circular, elliptical or arc-shaped, etc., and the elliptical shape is taken as an example in the figure.
[0038] The first outer electrode is arranged at the periphery of the first inner electrode 20 and the second inner electrode 21. In this embodiment: the first outer electrode includes at least one first conductive segment, such as 2 to 3 or more. When multiple first conductive segments are provided, the multiple first conductive segments are distributed on the first circumference. The cross section of the first conductive segment is arc-shaped, that is, the first conductive segments are all arc-shaped segments, which is also more conducive to being surrounded on the first circumference when multiple first conductive segments are provided.
[0039] The second outer electrode is arranged on the periphery of the first outer electrode. In this embodiment: the second outer electrode includes at least one second conductive segment, such as 1 to 2, or more. When multiple second conductive segments are arranged, the multiple second conductive segments are distributed on the second circumference, and the second circumference is located on the periphery of the first circumference. The cross-section of the second conductive segment is also arc-shaped, that is, the second conductive segments are also arc-shaped segments, which is also more conducive to being surrounded on the second circumference when multiple second conductive segments are arranged.
[0040] That is, in the present embodiment: the first inner electrode 20 and the second inner electrode 21 , the first outer electrode and the second outer electrode are distributed from the inside to the outside in the radial direction of the catheter 1 .
[0041] When the electrode assembly is placed in a conductive medium and the first inner electrode 20 and the second inner electrode 21 are energized, shock waves are formed in multiple directions between the first inner electrode 20 and the first conductive segment, between the first conductive segment and the second conductive segment, and between the first conductive segment and the second inner electrode 21, and the multiple directions are ≥3, such as 3 directions, 4 directions, 5 directions, 6 directions, or even more.
[0042] The insulation between the electrodes can be formed by an insulating layer 3, and the electrodes can be flexibly fixed by the insulating layer 3. The insulating layer 3 can be formed by PI tube, PET tube, PA tube, pebax tube, etc., or the insulating layer 3 can be formed by curing with UV glue, epoxy glue, etc., or the insulating layer 3 can be formed by Parylene coating.
[0043] In addition, the electrode catheter structure also includes a balloon, which is arranged on the catheter 1 and the electrode assembly 2 is arranged inside the balloon. The balloon can be filled with a conductive medium, and the shock waves released from multiple directions by the electrode assembly 2 act on the lesion through the balloon.
[0044] Embodiment 1:
[0045] like Figure 2 The electrode catheter structure for multi-directional energy release shown in the figure includes a catheter 1 and an electrode assembly 2, and the electrode assembly is arranged on the periphery of the catheter 1. In this embodiment: the electrode assembly includes a first inner electrode 20, a second inner electrode 21, a first outer electrode and a second outer electrode, and the non-conductive parts of the first inner electrode 20, the second inner electrode 21, the first outer electrode and the second outer electrode are insulated from each other. Specifically:
[0046] In this embodiment, taking the first inner electrode 20 connected to the positive pole of the power supply and the second inner electrode 21 connected to the negative pole of the power supply as an example, the first inner electrode 20 and the second inner electrode 21 are distributed 180° apart in the circumferential direction of the catheter. The cross-sections of the first inner electrode 20 and the second inner electrode 21 are elliptical.
[0047] The first outer electrode is disposed on the outer periphery of the first inner electrode 20 and the second inner electrode 21. In this embodiment, the first outer electrode includes a first conductive segment 220 and a first conductive segment 221, which are arc segments distributed on the first circumference.
[0048] The second outer electrode is disposed on the outer periphery of the first outer electrode. In this embodiment, the second outer electrode includes a second conductive segment 230, which is an arc segment distributed on a second circumference, and the second circumference is located on the outer periphery of the first circumference.
[0049] When the electrode assembly 2 is placed in a conductive medium and the first inner electrode 20 and the second inner electrode 21 are energized, the conductive breakdown between the first inner electrode 20 connected to the positive electrode and the first conductive segment 220 and the conductive breakdown between the first conductive segment 220 and the second conductive segment 230 form a shock wave in the first direction. Here, two breakdowns occur between the first inner electrode 20 and the first conductive segment 220 and between the first conductive segment 220 and the second conductive segment 230. The shock waves of the two breakdowns are superimposed and released in the first direction, that is, nearly twice the energy of a single breakdown is generated; the current forms a shock wave in the second direction through the conductive breakdown between the second conductive segment 230 and the first conductive segment 221; the current forms a shock wave in the third direction through the conductive breakdown between the first conductive segment 221 and the second inner electrode 21 connected to the negative electrode. In other words, in the process of the current flowing back from the first inner electrode 20 to the second inner electrode 21, shock waves are generated in three directions.
[0050] Embodiment 2:
[0051] like Figure 3The electrode catheter structure for multi-directional energy release shown in the figure includes a catheter 1 and an electrode assembly 2, and the electrode assembly is arranged on the periphery of the catheter 1. In this embodiment: the electrode assembly includes a first inner electrode 20, a second inner electrode 21, a first outer electrode and a second outer electrode, and the non-conductive parts of the first inner electrode 20, the second inner electrode 21, the first outer electrode and the second outer electrode are insulated from each other. Specifically:
[0052] In this embodiment, taking the first inner electrode 20 connected to the positive pole of the power supply and the second inner electrode 21 connected to the negative pole of the power supply as an example, the first inner electrode 20 and the second inner electrode 21 are distributed 180° apart in the circumferential direction of the catheter. The cross-sections of the first inner electrode 20 and the second inner electrode 21 are elliptical.
[0053] The first outer electrode is disposed on the outer periphery of the first inner electrode 20 and the second inner electrode 21. In this embodiment, the first outer electrode includes a first conductive segment 222 and a first conductive segment 223, which are arc segments distributed on the first circumference.
[0054] The second outer electrode is disposed on the periphery of the first outer electrode. In this embodiment, the second outer electrode includes a second conductive segment 231 and a second conductive segment 232, which are arc segments distributed on a second circumference, and the second circumference is located on the periphery of the first circumference.
[0055] When the electrode assembly 2 is placed in a conductive medium and the first inner electrode 20 and the second inner electrode 21 are energized, the first inner electrode 20 connected to the positive electrode and the first conductive segment 222 are electrically conductively broken down to form a shock wave in the first direction; the current is electrically conductively broken down between the first conductive segment 222 and the second conductive segment 231 to form a shock wave in the second direction; the current is electrically conductively broken down between the second conductive segment 231 and the second conductive segment 232 to form a shock wave in the fourth direction; the current is electrically conductively broken down between the second conductive segment 232 and the first conductive segment 223 to form a shock wave in the third direction; the current is electrically conductively broken down between the first conductive segment 223 and the second inner electrode 21 connected to the negative electrode to form a shock wave in the fourth direction. Here, two breakdowns occur between the second conductive segment 231 and the second conductive segment 232 and between the first conductive segment 223 and the second inner electrode 21. The shock waves of the two breakdowns are superimposed and released in the fourth direction, but a time difference may occur between the two breakdowns, and the superimposed energy may be slightly weaker. That is, when the current flows back from the first inner electrode 20 to the second inner electrode 21 , shock waves are generated in four directions.
[0056] Embodiment three:
[0057] like Figure 3The electrode catheter structure for multi-directional energy release shown in the figure includes a catheter 1 and an electrode assembly 2, and the electrode assembly is arranged on the periphery of the catheter 1. In this embodiment: the electrode assembly includes a first inner electrode 20, a second inner electrode 21, a first outer electrode and a second outer electrode, and the non-conductive parts of the first inner electrode 20, the second inner electrode 21, the first outer electrode and the second outer electrode are insulated from each other. Specifically:
[0058] The first inner electrode 20 and the second inner electrode 21 are used to connect the positive electrode and the negative electrode of the power supply, respectively. For example, the first inner electrode 20 is connected to the positive electrode of the power supply, and the second inner electrode 21 is connected to the negative electrode of the power supply. The first inner electrode 20 and the second inner electrode 21 are distributed at intervals of 60° in the circumferential direction of the catheter. The cross-sections of the first inner electrode 20 and the second inner electrode 21 are elliptical.
[0059] The first outer electrode is disposed on the outer periphery of the first inner electrode 20 and the second inner electrode 21. In this embodiment, the first outer electrode includes a first conductive segment 224, a first conductive segment 225, and a first conductive segment 226, which are arc segments distributed on the first circumference.
[0060] The second outer electrode is disposed on the periphery of the first outer electrode. In this embodiment, the second outer electrode includes a second conductive segment 233 and a second conductive segment 234, which are arc segments distributed on a second circumference, and the second circumference is located on the periphery of the first circumference.
[0061] When the electrode assembly 2 is placed in a conductive medium and the first inner electrode 20 and the second inner electrode 21 are energized, the first inner electrode 20 connected to the positive electrode and the first conductive segment 224 are electrically conductively broken down to form a shock wave in the first direction; the current is electrically conductively broken down between the first conductive segment 224 and the second conductive segment 233 to form a shock wave in the second direction; the current is electrically conductively broken down between the second conductive segment 233 and the first conductive segment 225 to form a shock wave in the third direction; the current is electrically conductively broken down between the first conductive segment 225 and the second conductive segment 234 to form a shock wave in the fourth direction; the current is electrically conductively broken down between the second conductive segment 234 and the first conductive segment 226 to form a shock wave in the fifth direction; the current is electrically conductively broken down between the first conductive segment 226 and the second inner electrode 21 connected to the negative electrode to form a shock wave in the sixth direction. In other words, in the process of the current flowing back from the first inner electrode 20 to the second inner electrode 21, shock waves are generated in six directions.
[0062] For the electrodes that do not need to generate conductive breakdown in the first to third embodiments, the conductive paths can be extended or insulation treatment can be performed.
[0063] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. An electrode catheter structure for multi-directional energy release, comprising a catheter and an electrode assembly, wherein the electrode assembly is arranged on the periphery of the catheter, and is characterized in that: The electrode assembly comprises: First inner electrode, second inner electrode: the first inner electrode and the second inner electrode are used to connect the positive electrode and the negative electrode of the power supply respectively; First outer electrode: the first outer electrode is arranged on the outer periphery of the first inner electrode and the second inner electrode, Second external electrode: The second external electrode is arranged on the periphery of the first external electrode, The first inner electrode, the second inner electrode, the first outer electrode and the non-conductive parts of the second outer electrode are insulated from each other, the first outer electrode includes at least one first conductive segment, and the second outer electrode includes at least one second conductive segment. When the electrode assembly is placed in a conductive medium and the first inner electrode and the second inner electrode are energized, shock waves are formed in multiple directions between the first inner electrode and the first conductive segment, between the first conductive segment and the second conductive segment, and between the first conductive segment and the second inner electrode.
2. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: When there are multiple first conductive segments, the multiple first conductive segments are distributed on a first circumference; when there are multiple second conductive segments, the multiple second conductive segments are distributed on a second circumference, and the second circumference is located outside the first circumference.
3. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: The first conductive segments are provided with 2 to 3; The second conductive segments are provided in 1-2 numbers; The multiple directions are ≥3.
4. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: The first inner electrode and the second inner electrode are distributed in the circumferential direction of the catheter at intervals greater than 0° and less than or equal to 180°.
5. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: The cross-sections of the first inner electrode and the second inner electrode are circular, elliptical or arc-shaped; The cross sections of the first conductive segment and the second conductive segment are arc-shaped.
6. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: There are two first conductive segments, and one second conductive segment. A shock wave in a first direction is formed between the first inner electrode and one first conductive segment, and between the first conductive segment and the second conductive segment; a shock wave in a second direction is formed between the second conductive segment and another first conductive segment; and a shock wave in a third direction is formed between another first conductive segment and the second inner electrode.
7. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: There are two first conductive segments, and two second conductive segments. A shock wave in a first direction is formed between the first inner electrode and one of the first conductive segments; a shock wave in a second direction is formed between one of the first conductive segments and one of the second conductive segments; a shock wave in a third direction is formed between another of the second conductive segments and another of the first conductive segments; and a shock wave in a fourth direction is formed between one of the second conductive segments and another of the second conductive segments and between another of the first conductive segments and the second inner electrode.
8. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: There are three first conductive segments, and two second conductive segments. A shock wave in a first direction is formed between the first inner electrode and one of the first conductive segments; a shock wave in a second direction is formed between one of the first conductive segments and one of the second conductive segments; a shock wave in a third direction is formed between one of the second conductive segments and another of the first conductive segments; a shock wave in a fourth direction is formed between another of the first conductive segments and another of the second conductive segments; a shock wave in a fifth direction is formed between another of the second conductive segments and another of the first conductive segments; and a shock wave in a sixth direction is formed between another of the first conductive segments and the second inner electrode.
9. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: A plurality of electrode assemblies are arranged along the axial direction of the catheter.
10. The electrode catheter structure for multi-directional energy release according to claim 1, characterized in that: The electrode catheter structure also includes a balloon for filling with a conductive medium. The balloon is arranged on the catheter, and the electrode assembly is arranged in the balloon.