CN219000546U

CN219000546U - Cardiac pulse ablation device with electromagnetic navigation

Info

Publication number: CN219000546U
Application number: CN202222641822.0U
Authority: CN
Inventors: 石渌亿
Original assignee: Hangzhouready Biological Technology Co ltd
Current assignee: Hangzhouready Biological Technology Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-05-12
Anticipated expiration: 2032-10-09

Abstract

The utility model discloses a heart pulse ablation device with electromagnetic navigation, which comprises a distal end, a terminal catheter section and a proximal handle assembly, wherein the catheter section is provided with a multi-cavity tube and a three-cavity tube from near to far respectively, the head end is an annular section extending out of the three-cavity tube, the annular section comprises an annular ring extending out of the three-cavity tube and electrode rings which are arranged on the annular ring at intervals, each electrode ring is connected with a lead, the annular section comprises a first section and a second section, the first section and the second section extend out of different cavities of the three-cavity tube, the first section and the second section are in a center symmetrical semicircle shape which is connected end to end, and the first section and the second section are provided with straight sections; the annular section is formed by encircling two annular rings extending out of the three-cavity tube, each annular ring is provided with a straight line part and a semicircular part which are connected, and electrode rings on the annular rings are connected with wires, so that the annular rings can be electrified independently, not only can the isolation of the pulmonary veins be realized, but also the linear ablation can be realized.

Description

Cardiac pulse ablation device with electromagnetic navigation

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a heart pulse ablation device with electromagnetic navigation.

Background

In recent years, catheter ablation pulmonary vein isolation has been widely used to treat atrial arrhythmias, particularly atrial fibrillation, and has been accepted by various large arrhythmia centers. However, the recurrence rate, particularly the long-term recurrence rate, of atrial fibrillation pulmonary vein isolation treatment is still high. Therefore, how to reduce the recurrence rate of atrial fibrillation therapy becomes an urgent problem to be solved.

There are many factors that affect the effectiveness of atrial fibrillation therapy, and the force against tissue during ablation is an important factor. Within a certain range, the larger the ablation tissue clinging force is, the deeper the ablation depth is, the larger the damage area is, and the better the treatment effect is. Currently, there are many ablation catheters for treating atrial fibrillation, such as monopolar ablation catheters, cryo balloons, thermal balloons, and annular multipolar ablation catheters, which have some problems. In particular, monopolar ablation catheters have the disadvantage of long ablation times, long radiation exposure times, and high technical demands on the operator. The freezing saccule has the problems of complex preparation work and suitability for paroxysmal atrial fibrillation ablation only. In addition, poor ablation of thermal balloons has long been a problem. However, the advent of annular multipolar ablation catheters has largely overcome the above-mentioned drawbacks, with good advantages.

Due to the special structure of the pulmonary veins and individual differences, the ablation effect of the annular multipolar ablation catheter needs to be further improved, the existing annular electric pulse catheter with the head end is bent through an annular ring to form an annular ablation electrode, the annular ring cannot be spliced into a complete straight line and a complete circle when being bent, and the ablation catheter can only perform annular pulmonary vein isolation and cannot perform linear pulse ablation.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a heart pulse ablation device with electromagnetic navigation

And (3) a device.

The utility model adopts the following technical scheme:

the utility model provides a heart pulse ablation device with electromagnetic navigation, includes the catheter section and the handle subassembly of proximal end of distal end, terminal, catheter section sets up multicavity pipe and three-chamber pipe from nearly far-reaching respectively, the head end is for stretching out in the annular section of three-chamber pipe, and the annular section is including stretching out the annular ring and the annular ring interval setting on the three-chamber pipe, and every electrode ring all connects the wire, the annular section includes first section and second section, and first section and second section stretch out in the different cavitys of three-chamber pipe, first section and second section are the central symmetry semicircle of end to end, and first section and second section all are equipped with the straightway.

Preferably, the straight line segment is provided with one or a plurality of electrode rings at intervals.

Preferably, the three-cavity tube comprises a first cavity, a second cavity and a third cavity which are arranged at intervals in a straight line from top to bottom, wherein the first cavity and the third cavity are internally provided with a first section and a second section of an annular section respectively.

Preferably, the number of the multi-lumen tube chambers is two, three, four, five, six or more

Preferably, the cross section of the multi-lumen tube chamber is circular or fan-shaped with rounded corners.

Preferably, three cavities of the multi-cavity tube are opposite to the first cavity, the second cavity and the third cavity, a middle through tube is arranged in the cavity, opposite to the second cavity, of the multi-cavity tube, and the middle through tube is connected with the cavity, opposite to the second cavity, of the multi-cavity tube and the second cavity.

Preferably, heparin water or guide wires or physiological saline is introduced into the middle through pipe.

Preferably, the electrode ring is a developing ring, and a magnetic inductor is arranged in the multi-cavity tube and is electrically connected with the electrode ring.

Preferably, the tail end of the handle assembly is provided with a luer connector and an electrode connecting wire, heparin water is injected into the luer connector, and the electrode connecting wire is connected with external three-dimensional measuring equipment and a magnetic inductor.

Preferably, the luer connects the chamber of the multi-lumen tube opposite the second lumen and the second lumen.

Compared with the prior art, the utility model has the following advantages:

1. the annular section is formed by encircling two annular rings extending out of the three-cavity tube, each annular ring is provided with a straight line part and a semicircular part which are connected, and electrode rings on the annular rings are connected with wires, so that the annular rings can be electrified independently, not only can the isolation of the pulmonary veins be realized, but also the linear ablation can be realized.

2. The magnetic sensor is arranged in the multi-cavity tube, the bending of the catheter can be accurately displayed on the three-dimensional surface measurement equipment, the two annular tubes are enclosed into a whole round shape, the head end of the two annular tubes is not convex, the heart can be subjected to mapping modeling again, and a doctor is prevented from switching the ablation catheter and the mapping catheter back and forth in the operation process.

3. The multi-cavity and three-cavity built-in middle through pipe can be placed in a catheter, the middle through pipe is connected with the handle assembly in a direction, heparin water can be injected through the luer connector at the tail end, and the catheter is prevented from staying in the heart for a long time to cause thrombus.

Drawings

Fig. 1 is a block diagram of a head end and a conduit segment of the present disclosure.

Fig. 2 is a schematic view of a headend structure according to the present utility model.

Fig. 3 is a block diagram of a handle segment of the present utility model.

Fig. 4 is a schematic view of a headend structure according to the present utility model.

Fig. 5 is a cross-sectional view of a triple lumen tube of the present utility model.

FIG. 6 is a cross-sectional view of a multilumen tubing of the present utility model.

In the figure:

the electrode comprises an annular section 1, an electrode ring 1-1, an annular ring 1-2, a first section 1-3, a second section 1-4, a three-cavity tube 2, a first cavity 2-1, a second cavity 2-2, a third cavity 2-3, a multi-cavity tube 3, a middle through tube 4, a luer connector 5, a handle assembly 6 and a magnetic inductor 7.

Detailed Description

In order to facilitate understanding of the technical scheme of the present utility model, the following detailed description is made with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-6, the utility model discloses a heart pulse ablation device with electromagnetic navigation, which comprises a distal head end, a terminal catheter section and a proximal handle assembly 6, wherein the catheter section is provided with a multi-cavity tube 3 and a three-cavity tube 2 from near to far, the head end is an annular section 1 extending out of the three-cavity tube, the annular section 1 comprises an annular ring 1-2 extending out of the three-cavity tube and electrode rings 1-1 arranged on the annular ring 1-2 at intervals, each electrode ring 1-1 is connected with a lead wire, the annular section 1 comprises a first section 1-3 and a second section 1-4, the first section 1-3 and the second section 1-4 extend out of different cavities of the three-cavity tube 2, the first section 1-3 and the second section 1-4 are in a symmetrical semicircle shape with the center connected with each other end to end, and the first section 1-3 and the second section 1-4 are provided with straight sections 1-5.

The three-cavity tube 2 comprises a first cavity 2-1, a second cavity 2-2 and a third cavity 2-3 which are arranged at intervals in a straight line from top to bottom, wherein a first section 1-3 and a second section 1-4 of annular sections are respectively communicated in the first cavity 2-1 and the third cavity 2-3; the annular section is formed by encircling two annular rings extending out of the three-cavity tube, each annular ring is provided with a straight line part and a semicircular part which are connected, and electrode rings on the annular rings are connected with wires, so that the annular rings can be electrified independently, not only can the isolation of the pulmonary veins be realized, but also the linear ablation can be realized.

The number of chambers of the multi-lumen tube 3 is two, three, four, five, six or more, and the extra chambers of the multi-lumen tube are used for internally introducing pull wires for deforming the first and second sections 1-3, 1-4.

The cross section of the chamber of the multi-cavity tube 3 is circular or fan-shaped with round corners.

Three chambers of the multi-chamber tube 3 are opposite to the first chamber 2-1, the second chamber 2-2 and the third chamber 2-3, a middle through tube 4 is arranged in the chamber of the multi-chamber tube 3 opposite to the second chamber 2-2, and the middle through tube 4 is connected with the chamber of the multi-chamber tube 3 opposite to the second chamber 2-2 and the second chamber; heparin water or guide wires or physiological saline water is filled in the middle through pipe 4.

The electrode ring 1-1 is a developing ring, a magnetic inductor 7 is arranged in the multi-cavity tube, and the magnetic inductor 7 is electrically connected with the electrode ring 1-1.

The tail end of the handle assembly 6 is provided with a luer connector 5 and an electrode connecting wire, heparin water is injected into the luer connector 5, and the electrode connecting wire is connected with external three-dimensional measuring equipment and a magnetic inductor 7; the magnetic sensor is arranged in the multi-cavity tube, the bending of the catheter can be accurately displayed on the three-dimensional surface measurement equipment, the two annular tubes are enclosed into a whole round shape, the head end of the two annular tubes is not convex, the heart can be subjected to mapping modeling again, and a doctor is prevented from switching the ablation catheter and the mapping catheter back and forth in the operation process.

The luer connector 5 is communicated with the cavity of the multi-cavity tube 3 opposite to the second cavity 2-2 and the second cavity; the multi-cavity and three-cavity built-in middle through pipe can be placed in a catheter, the middle through pipe is connected with the handle assembly in a direction, heparin water can be injected through the luer connector at the tail end, and the catheter is prevented from staying in the heart for a long time to cause thrombus.

The foregoing is merely a preferred embodiment of the present utility model, and the scope of the utility model is defined by the claims, and those skilled in the art should also consider the scope of the present utility model without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a heart pulse ablation device with electromagnetic navigation, includes the catheter section and the handle subassembly (6) of proximal end of distal end, terminal, its characterized in that, catheter section sets up multicavity pipe (3) and three lumen pipe (2) from nearly far away respectively, the head end is for stretching out in the annular section (1) of three lumen pipe, and annular section (1) is including stretching out electrode ring (1-1) that set up on annular ring (1-2) and annular ring (1-2) interval of three lumen pipe, every electrode ring (1-1) all connects the wire, annular section (1) includes first section (1-3) and second section (1-4), and first section (1-3) and second section (1-4) stretch out in the different cavitys of three lumen pipe (2), first section (1-3) and second section (1-4) are the central symmetry semicircle of end to end, and first section (1-3) and second section (1-4) all are equipped with straightway section (1-5).

2. A heart pulse ablation device with electromagnetic navigation according to claim 1, characterized in that the straight line segment (1-5) is provided with one or a plurality of electrode rings (1-1) at intervals.

3. The heart pulse ablation device with electromagnetic navigation according to claim 1, wherein the three-lumen tube (2) comprises a first lumen (2-1), a second lumen (2-2) and a third lumen (2-3) which are arranged at intervals in a straight line from top to bottom, and the first lumen (2-1) and the third lumen (2-3) are respectively communicated with a first section (1-3) and a second section (1-4) of an annular section.

4. A cardiac pulse ablation device with electromagnetic navigation according to claim 1, characterized in that the number of chambers of the multi-lumen tube (3) is two, three, four, five, six or more.

5. A heart pulse ablation device with electromagnetic navigation according to claim 3, characterized in that the cross section of the chamber of the multi-lumen tube (3) is circular or fan-shaped with rounded corners.

6. The heart pulse ablation device with electromagnetic navigation according to claim 1, wherein three chambers of the multi-chamber tube (3) are opposite to the first chamber (2-1), the second chamber (2-2) and the third chamber (2-3), a middle through tube (4) is arranged in the chamber, opposite to the second chamber (2-2), of the multi-chamber tube (3), and the middle through tube (4) is connected with the chamber, opposite to the second chamber (2-2), of the multi-chamber tube (3).

7. The heart pulse ablation device with electromagnetic navigation according to claim 6, wherein heparin water or guide wire or physiological saline is introduced into the middle through tube (4).

8. The heart pulse ablation device with electromagnetic navigation according to claim 1, wherein the electrode ring (1-1) is a developing ring, a magnetic inductor (7) is arranged inside the multi-cavity tube,

the magnetic sensor (7) is electrically connected with the electrode ring (1-1).

9. The heart pulse ablation device with electromagnetic navigation according to claim 1, wherein the tail end of the handle assembly (6) is provided with a luer connector (5) and an electrode connecting wire, heparin water is injected into the luer connector (5), and the electrode connecting wire is connected with external three-dimensional measuring equipment and a magnetic inductor (7).

10. A heart pulse ablation device with electromagnetic navigation according to claim 9, characterized in that the luer fitting (5) communicates the chamber of the multi-lumen tube (3) opposite the second lumen (2-2) with the second lumen.