CN114587569A - High-density mapping self-adaptive pulse ablation device with flower-shaped structure - Google Patents
High-density mapping self-adaptive pulse ablation device with flower-shaped structure Download PDFInfo
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- 238000002679 ablation Methods 0.000 title claims abstract description 24
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- 238000005452 bending Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 208000007536 Thrombosis Diseases 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 3
- 239000011780 sodium chloride Substances 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 206010003658 Atrial Fibrillation Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 229920002614 Polyether block amide Polymers 0.000 description 2
- 238000011298 ablation treatment Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 238000013153 catheter ablation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
- A61B5/283—Invasive
- A61B5/287—Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
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- A—HUMAN NECESSITIES
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1407—Loop
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
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Abstract
The invention relates to a high-density mapping self-adaptive pulse ablation device with a flower-shaped structure, which comprises a distal flower-shaped structure electrode bearing part (1), a transition section single-lumen tube (2), an adjustable bent section catheter (3), a main body section catheter (4) and a control handle (5), and is characterized in that: the electrode bearing part (1) of the far-end flower-shaped structure is provided with a plurality of supporting ridges (6), and the tail ends of two adjacent supporting ridges (6) are connected through a far-end flexible connecting piece (7) to form a supporting arm flower-shaped plane of a closed structure. The electrode bearing part of the invention is provided with a plurality of petal-shaped self-adaptive closed structures and a plurality of electrode array groups which are uniformly distributed, can collect electrocardiosignals in multiple directions, overcomes the limitation of electric conduction directions and avoids information omission caused by different conduction directions.
Description
Technical Field
The invention relates to an ablation catheter, in particular to a high-density mapping self-adaptive pulse ablation device with a flower-shaped structure.
Background
Atrial fibrillation (commonly known as atrial fibrillation) is one of the most common arrhythmia diseases in clinic and is a serious challenge in the global cardiovascular disease field in the 21 st century. About 1000 million people in China are suffering from the disease, and the quality of life is seriously affected. Catheter ablation therapy is one of the effective means for curing atrial fibrillation at present. The mapping catheter is an important tool for doctors to track disease sources and make ablation schemes. However, although the current high-density mapping catheter achieves the improvement of mapping density, the mapping of the electrical signals has errors because the signal transmission direction cannot be determined.
Disclosure of Invention
The invention designs a high-density mapping self-adaptive pulse ablation device with a flower-shaped structure, which solves the technical problems that: (1) the conventional ablation catheter cannot collect electrocardiosignals in multiple directions, and information omission is caused by different conduction directions due to the limitation of the electric conduction direction; (2) the existing market products do not adopt a closed-loop structure design, the probability of intracardiac winding and electrode touch of the catheter cannot be reduced, and the safety of clinical use cannot be ensured. (3) The existing product has high assembly difficulty.
In order to solve the technical problems, the invention adopts the following scheme:
a high-density mapping self-adaptive pulse ablation device with a flower-shaped structure comprises a distal flower-shaped structure electrode bearing part (1), a transition section single-lumen tube (2), an adjustable bending section catheter (3), a main body section catheter (4) and a control handle (5), and is characterized in that: the electrode bearing part (1) of the far-end flower-shaped structure is provided with a plurality of supporting ridges (6), and the tail ends of two adjacent supporting ridges (6) are connected through a far-end flexible connecting piece (7) to form a supporting arm flower-shaped plane of a closed structure.
Preferably, the plane of the flower-shaped supporting arm forms a certain included angle with the longitudinal axis of the tube body of the bendable section catheter (3) so as to be convenient to be attached to tissues.
Preferably, a plurality of ring electrodes (8) are arranged on the distal supporting ridge (6) and the flexible connecting piece (7), wherein the collection and recording of the multi-direction centripetal electric signals are realized by adjusting the spacing and the number of the ring electrodes (8) to realize high-density mapping or by different electrode arrangement combinations.
Preferably, the plurality of ring electrodes (8) are arranged in a rectangular and equilateral triangular array, 2 ring electrodes (8) on two adjacent supporting ridges (6) and 2 ring electrodes (8) on the flexible connecting piece (7) between two adjacent supporting ridges (6) form a regular quadrilateral array; the support ridges (6) connected with the two adjacent flexible connecting pieces (7) form an equilateral triangle array arrangement through the 1 ring electrodes (8).
Preferably, the flower-shaped support arm plane is composed of 8 closed structures, and the ring electrode (8) on each support ridge 6 and the two ring electrodes (8) on the two adjacent flexible connectors (7) form an equilateral triangle array structure, so that multi-direction angle electrocardiosignal collection of 60 degrees and 120 degrees is realized.
Preferably, the flower-shaped electrode bearing part (1) is internally supported by a support ridge (6) and a flexible connecting piece (7), the support ridge (6) is a support arm bracket (10), the flexible connecting piece (7) is a flexible connecting rod (11), and two ends of the flexible connecting rod (11) are respectively connected with the tail end of one support arm bracket (10).
Preferably, a convex structure (111) is designed in the middle of each flexible connecting rod (11), which is beneficial to reducing the branch drawing force value and is convenient for drawing the supporting arm bracket (10) into a sheath.
Preferably, the support arm supports (10) and the flexible connecting rods (11) are made into an integrated structure (12), the tail ends of the flexible connecting rods of the integrated structure (12) are connected with the folding points of the adjacent support arm supports (10) to form a far-end connecting point (13), and each support arm support and the adjacent connecting rod are connected only once.
Preferably, the support arm support (10) is internally designed with a saline pipe (15), the far end of the saline pipe (15) is parallel to the near end of the support arm plane, saline is infused in the use process of the catheter, and thrombus generation at the near end of the support ridge (6) is avoided.
Preferably, 2 5D magnetic inductors (17) are arranged in a bracket base of the transition section single-cavity tube (2), and the two 5D magnetic inductors (17) are fixed through a coaxial piece (18) and are respectively fixed in a first magnetic inductor fixing groove (20) and a second magnetic inductor fixing groove (21) of the coaxial piece (15); wherein, one 5D magnetic inductor (17) is parallel to the main body axis of the transition section single cavity tube (2), and the other 5D magnetic inductor (17) forms a certain included angle with the main body axis of the transition section single cavity tube (2); two magnetic inductor fixed slots of coaxial piece (15) are designed to be near-end installation intersection structures, so that 2 5D magnetic inductor leads can be converged in the same channel at the near end of coaxial piece (15), and then enter a sensor lead hole of main body section catheter (4) together.
The high-density mapping self-adaptive pulse ablation device with the flower-shaped structure has the following beneficial effects:
(1) the electrode bearing part of the invention is provided with a plurality of petal-shaped closed structures which are uniformly distributed and a plurality of electrode array groups, can collect electrocardiosignals in multiple directions, overcomes the limitation of electric conduction directions and avoids information omission caused by different conduction directions.
(2) The invention uses a plurality of closed structures to form the supporting part to improve the intracardiac mapping efficiency, and can also carry out ablation treatment by applying high-voltage pulses to the equidistant array electrode group.
(3) Compared with the multi-branch products in the market at present, the electrode bearing part of the invention has a plurality of petal-shaped closed structures which are uniformly distributed, has safer closed-loop structure design, can greatly reduce the probability of intracardiac winding of the catheter, and improves the safety of clinical use.
(4) The far-end supporting arm adopts an L-shaped structure, so that the assembly difficulty can be further reduced, the hardness of a connecting point can be reduced, and the sheath collecting tube of the catheter is more facilitated.
Drawings
FIG. 1: the invention has a three-dimensional structure schematic diagram of a high-density mapping self-adaptive pulse ablation device with a flower-shaped structure;
FIG. 2: the plane of the supporting arm forms a schematic diagram of patterns;
FIG. 3: the ring electrode position schematic in FIG. 2;
FIG. 4: FIG. 2 is a schematic view of a ring electrode angle;
FIG. 5: the invention discloses a first connection schematic diagram of a connecting rod and a bracket;
FIG. 6: the connecting rod and the bracket are connected in a second connecting schematic diagram;
FIG. 7: a cross-sectional view of a support arm of the present invention;
FIG. 8: the structure of the saline perfusion at the far end of the catheter is schematic;
FIG. 9: the first schematic diagram of the magnetic inductor assembly mode in the invention;
FIG. 10: a second schematic view of an assembly of the magnetic sensor of the present invention;
FIG. 11: the invention relates to a sectional view of a bendable section conduit.
Description of reference numerals:
1-a flower-shaped structure electrode carrying part; 2-transition section single cavity tube; 3-a bendable section conduit; 4-a main body section catheter; 5, operating a handle; 6-supporting ridges; 7-a distal flexible connector; an 8-ring electrode; 9-outer insulating material layer; 10-a support arm support; 11-a connecting rod; 12-a one-piece construction; 13-a distal connection point; 14-a lumen tube; 15-saline pipe; 16-ring electrode leads; 17-5D magnetic inductors; 18-a coaxial member; 19-a pull line; 20-a first magnetic inductor fixing groove; 21-second magnetic inductor groove.
Detailed Description
The invention is further described below with reference to fig. 1 to 11:
as shown in fig. 1, the invention provides a high-density mapping adaptive pulse ablation device with a flower-shaped structure, which comprises a distal flower-shaped structure electrode bearing part 1, a transition section single-lumen tube 2, an adjustable bent section catheter 3, a main body section catheter 4 and a control handle 5.
The flower shape in the present invention can be defined as: the small closed-loop structures are combined into a large closed-loop structure which is formed by connecting the small closed-loop structures with each other.
The electrode bearing part 1 with the distal end flower-shaped structure, the transition section single-cavity tube 2 and the bendable section catheter 3 are connected through glue, the bendable section catheter 3 and the main body section catheter 4 are connected through high-frequency welding, and the main body section catheter 4 and the control handle 5 are connected through glue. The tail socket is arranged on the proximal end side of the control handle 5 and is connected with each lead in the catheter. The side wall of the control handle 5 also comprises a main body bending control part which is connected with the adjustable bending section catheter 3 through a traction line and is used for realizing the distal bending adjustment of the catheter.
As shown in fig. 2, the distal branch of the catheter forms a flower-shaped support arm plane structure, and is provided with a plurality of support ridges 6, the tail ends of two adjacent support ridges 6 are connected through a distal flexible connecting piece 7 to form a small closed loop structure, and a plurality of small closed loop structures form a large closed loop structure support arm plane. The supporting ridges 6 are uniformly distributed outwards along the tube body, the plane of the supporting arm and the longitudinal axis of the tube body of the bendable section catheter 3 form a certain included angle, the preferred angle is 90-120 degrees, the supporting arm is convenient to be attached to tissues, and the supporting ridges are uniformly distributed in the extending plane.
As shown in fig. 3, the support arm plane of the flower-shaped structure at the far end of the catheter is preferably composed of 6 support ridges 6 which are uniformly distributed and a flexible connecting piece 7, wherein two ends of the flexible connecting piece 7 are respectively connected with the tail ends of two adjacent support ridges 6 through glue to form the far end of a 'petal' structure. A plurality of ring electrodes 8 are arranged on the distal support ridge 6 and the flexible connecting piece 7, wherein high-density mapping is realized by adjusting the spacing and the number of the ring electrodes 8. Meanwhile, the collection and the recording of the multi-direction centripetal electric signals can be realized through different electrode arrangement combinations. The combination mode can realize the collection of electrocardiosignals in 60 degrees, 90 degrees and 120 degrees respectively, and the mapping efficiency is improved.
In fig. 3, a plurality of ring electrodes 8 are arranged in a rectangular and equilateral triangular array, and 2 ring electrodes 8 on two adjacent supporting ridges 6 and 2 ring electrodes 8 on the flexible connecting piece 7 between two adjacent supporting ridges 6 form a regular quadrilateral array; and 1 ring electrode 8 respectively provided on two adjacent flexible connectors 7, and the support ridges 6 connected with two adjacent flexible connectors 7 form an equilateral triangle array arrangement through the 1 ring electrodes 8.
Each group of 4+3 electrode array combination structure can realize electrode combination in four directions simultaneously, high-voltage pulse is applied to the array electrode group for ablation treatment by adjusting the combination mode among the electrodes at the equipment end, and pulse application to the equidistant array electrodes is preferred for convenience of pulse ablation.
As shown in fig. 4, 8 "petal" structures may be provided at the distal end of the catheter in order to further increase the mapping density of the catheter; each supporting ridge is provided with a plurality of ring electrodes 8, the mapping density per unit area is further increased, the ring electrode a3 on each supporting ridge 6 and the two ring electrodes a1 and a2 on the two adjacent flexible connectors 7 form an equilateral triangle array structure, electrocardiosignal collection at multi-direction angles of 60 degrees and 120 degrees can be realized, compared with 6 branch structures, the number of the electrode array groups is further increased by 8 groups of electrode array structures at the far end, and mapping and ablation can be carried out more efficiently.
As shown in fig. 5, the flower-shaped structured electrode carrying section 1 is composed of an inner supporting and outer insulating material layer 9. The inside support comprises support arm support 10 and flexible connecting rod 11, and 11 both ends of connecting rod are connected with the end of a support arm support 10 respectively, and the equipment is accomplished the back and is fixed with the connecting rod 11 and the support arm support 10 end at both ends respectively through glue. The adjacent support arm brackets 10 are connected through the connecting rod 11 to form a closed annular structure, so that the moving range of the support arms is limited, and the connection stability of the far end of the catheter is improved. The middle part of each connecting rod 11 is provided with a convex structure 111 which is beneficial to reducing the branch drawing force value and is convenient for drawing the support arm bracket 10 into a sheath. The support arm bracket 10 and the connecting rod 11 are preferably made of a metal material having a shape memory function, such as nitinol. An outer insulating material layer 9 is arranged outside the support arm support 10 and the connecting rod 11, the outer insulating material layer 9 is an insulating single-cavity tube, and the insulating single-cavity tube can be made of polymer materials such as pebax, TPU and the like.
As shown in fig. 6, in order to further simplify the assembly process, the hardness of the connection points is reduced; the distal support arm/connector bar arrangement is a one-piece structure 12, i.e. the support arm support 10 and the connector bar 11 are made in one piece. After the single-lumen tube is assembled, the tail ends (free ends) of the connecting rods of the integrated structure 12 are connected with the folding points of the adjacent support arm supports to form a far-end connecting point 13, and each support arm support and the adjacent connecting rod are connected only once.
As shown in fig. 7, the outer insulating material layer 9 of the flower-shaped structure at the distal end of the catheter may be provided with a two-lumen tube 14 structure, and the material of the two-lumen tube 14 is a polymer insulating material, such as: one of the lumens of the pebax and TPU is through the support arm bracket 10 and the connecting rod 11, the other lumen is through the ring electrode lead 16, and the two-lumen design can avoid the lead from being wound and damaged, thereby ensuring that the catheter has good insulating property.
As shown in fig. 8, the proximal end of the electrode carrier arm of the catheter is provided with a saline tube 15, the inner part of the support arm support 10 is provided with the distal end of the saline tube 15 parallel to the proximal end of the support arm plane, and saline is infused during the use of the catheter to avoid thrombus at the proximal end of the support spine 6. The support arm support base is sleeved in the transition section single-cavity tube 2, and the transition section single-cavity tube 2 and the support arm support base are sealed through glue; the distal electrode lead and the saline tube 15 respectively enter 2 cavities corresponding to four cavities in the main body bendable section catheter 2 through the transition section single cavity tube 2.
As shown in fig. 9-11, 2 5D magnetic inductors 17 are arranged in the base of the transition section single-lumen tube 2 support, and two 5D magnetic inductors 17 are fixed by a coaxial member 18 and respectively fixed in a first magnetic inductor fixing groove 20 and a second magnetic inductor groove 21 of the coaxial member 15; wherein, one 5D magnetic inductor 17 is parallel to the main body axis of the transition section single cavity tube 2, and the other 5D magnetic inductor 17 forms a certain included angle with the main body axis of the transition section single cavity tube 2, preferably about 5-10 degrees. The two magnetic inductor fixing grooves of the coaxial piece 15 are designed to be of a near-end intersection structure, so that 2 5D magnetic inductor leads can be converged in the same channel at the near end of the coaxial piece 15 and then enter the sensor lead hole of the main body section catheter 4 together.
A step part at the far end of the bendable section catheter 3 is provided with a pull wire far end fixing point; the far end of the pull wire is fixed on the inner wall of the cavity in the bendable section catheter 3 through a T-shaped plug-in unit; the independent bending control of the bendable section of the main body is realized. Wherein the four lumens of the bendable section catheter 3 are respectively arranged to be accessible through the ring electrode lead 16, the sensor lead, the saline tube 15 and the puller wire 19.
The invention is described above with reference to the accompanying drawings, it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (10)
1. A high-density mapping self-adaptive pulse ablation device with a flower-shaped structure comprises a distal flower-shaped structure electrode bearing part (1), a transition section single-lumen tube (2), an adjustable bending section catheter (3), a main body section catheter (4) and a control handle (5), and is characterized in that: the electrode bearing part (1) of the far-end flower-shaped structure is provided with a plurality of supporting ridges (6), and the tail ends of two adjacent supporting ridges (6) are connected through a far-end flexible connecting piece (7) to form a supporting arm flower-shaped plane of a closed structure.
2. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 1, characterized in that: the plane of the flower-shaped supporting arm and the longitudinal axis of the tube body of the bendable section catheter (3) form a certain included angle so as to be convenient to be attached to tissues.
3. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 1, characterized in that: the far-end supporting ridge (6) and the flexible connecting piece (7) are respectively provided with a plurality of ring electrodes (8), wherein the high-density mapping is realized by adjusting the distance and the number of the ring electrodes (8) or the collection and the recording of the multi-directional centripetal electrical signals are realized by different electrode arrangement combinations.
4. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 3, wherein: the plurality of ring electrodes (8) are arranged in a rectangular and equilateral triangular array, 2 ring electrodes (8) on two adjacent supporting ridges (6) and 2 ring electrodes (8) on the flexible connecting piece (7) between two adjacent supporting ridges (6) form a regular quadrilateral array; the support ridges (6) connected with the two adjacent flexible connecting pieces (7) form an equilateral triangle array arrangement through the 1 ring electrodes (8).
5. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 3, wherein: the flower-shaped support arm plane is composed of 8 closed structures, and the ring electrode (8) on each support ridge 6 and the two ring electrodes (8) on the two adjacent flexible connecting pieces (7) form an equilateral triangle array structure, so that the acquisition of electrocardiosignals at multidirectional angles of 60 degrees and 120 degrees is realized.
6. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 1, characterized in that: the flower-shaped structure electrode bearing part (1) is composed of an internal support and an outer layer insulating material (9), the internal support is formed by a support ridge (6) and a flexible connecting piece (7), the support ridge (6) is a support arm support (10), the flexible connecting piece (7) is a flexible connecting rod (11), and two ends of the flexible connecting rod (11) are respectively connected with the tail end of one support arm support (10).
7. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 6, wherein: a convex structure (111) is designed in the middle of each flexible connecting rod (11), which is beneficial to reducing the branch drawing force value and is convenient for drawing the supporting arm bracket (10) into the sheath.
8. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 6, wherein: the support arm support (10) and the flexible connecting rod (11) are made into an integral structure (12), the tail end of the flexible connecting rod of the integral structure (12) is connected with the break point of the adjacent support arm support (10) to form a far-end connecting point (13), and each support arm support and the adjacent connecting rod are provided with and only need to be connected once.
9. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 6, wherein: the inside design of support arm support (10) has salt water pipe (15), and salt water pipe (15) distal end is parallel with support arm plane near-end, and the pipe use process salt water is poured into, avoids supporting spine (6) near-end production thrombus.
10. The high-density mapping adaptive impulse ablation device with a flower-shaped structure according to claim 6, wherein: 2 5D magnetic inductors (17) are arranged in a support base of the transition section single-cavity tube (2), and the two 5D magnetic inductors (17) are fixed through a coaxial piece (18) and are respectively fixed in a first magnetic inductor fixing groove (20) and a second magnetic inductor groove (21) of the coaxial piece (15); wherein, one 5D magnetic inductor (17) is parallel to the main body axis of the transition section single cavity tube (2), and the other 5D magnetic inductor (17) forms a certain included angle with the main body axis of the transition section single cavity tube (2); two magnetic inductor fixed slots of coaxial piece (15) are designed to be near-end installation intersection structures, so that 2 5D magnetic inductor leads can be converged in the same channel at the near end of coaxial piece (15), and then enter a sensor lead hole of main body section catheter (4) together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210267204.6A CN114587569A (en) | 2022-03-17 | 2022-03-17 | High-density mapping self-adaptive pulse ablation device with flower-shaped structure |
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| CN202210267204.6A CN114587569A (en) | 2022-03-17 | 2022-03-17 | High-density mapping self-adaptive pulse ablation device with flower-shaped structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117752404A (en) * | 2024-02-22 | 2024-03-26 | 四川锦江电子医疗器械科技股份有限公司 | Cardiac electrophysiology mapping and ablation catheter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117752404A (en) * | 2024-02-22 | 2024-03-26 | 四川锦江电子医疗器械科技股份有限公司 | Cardiac electrophysiology mapping and ablation catheter |
| CN117752404B (en) * | 2024-02-22 | 2024-05-07 | 四川锦江电子医疗器械科技股份有限公司 | Cardiac electrophysiology mapping and ablation catheter |
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