CN216394233U

CN216394233U - Arrhythmia radio frequency ablation catheter capable of entering ventricular wall for treatment

Info

Publication number: CN216394233U
Application number: CN202122501193.7U
Authority: CN
Inventors: 涂清鲜; 张�杰; 姜黔峰
Original assignee: Zunyi First Peoples Hospital
Current assignee: Zunyi First Peoples Hospital
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-29
Anticipated expiration: 2031-10-18

Abstract

The utility model relates to the technical field of medical auxiliary instruments, in particular to an arrhythmia radio frequency ablation catheter capable of entering a ventricular wall for treatment, which comprises: an ablation electrode lead is arranged in the catheter body; the probe is a conical body and is arranged in the catheter body, one end with the large diameter of the probe is connected to one end of the ablation electrode lead, and the probe is provided with an ablation electrode; the handle is detachably connected with one end of the catheter body, which is far away from the probe, a radio frequency generator is arranged in the catheter body, the radio frequency generator and one end, which is far away from the probe, of the ablation electrode lead are fixed, and a negative pressure suction device is arranged on the handle; the power supply mechanism is arranged in the handle and is electrically connected with the radio frequency generator and the negative pressure suction device; the plurality of suckers are arranged in the circumferential direction of the catheter body; the controller is arranged at one end of the handle, which is far away from the catheter body, and is electrically connected with the radio frequency generator and the negative pressure suction device through a control switch, and the control switch is electrically connected with the power supply mechanism. The utility model has the advantages that the ablation catheter can be fixed on the cardiac muscle during ablation, thereby improving the efficiency of the operation.

Description

Arrhythmia radio frequency ablation catheter capable of entering ventricular wall for treatment

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to an arrhythmia radio frequency ablation catheter capable of entering a ventricular wall for treatment.

Background

The radiofrequency ablation is to insert an electrode catheter into the heart by puncturing femoral vein, femoral artery or subclavian vein under the monitoring of an X-ray angiography machine, firstly check and determine the position of an abnormal structure causing tachycardia, then locally release high-frequency current at the position, generate higher temperature in a very small range, evaporate water in local tissues through thermal efficiency, ablate local myocardial cells at a specific part, so as to block a reentry loop or eliminate a focus, and treat tachyarrhythmia.

In the field of electrocardiographic therapy and the like, an interventional catheter is widely used to realize temperature parameter monitoring of a treatment site, extraction of electrophysiological signals, delivery of therapeutic energy, and the like. In particular, in cardiac rf ablation, reliable attachment or ring ablation is required for the high-bottom uneven portion of the beating heart to achieve successful operation. Some ablation points need to enter the wall of the chamber for ablation on the endocardium, but the existing ablation catheter cannot be well fixed, sometimes contacts with the myocardium and sometimes separates, the focus cannot be accurately found, the operation time is long, and the operation efficiency is low or unsuccessful.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems in the prior art, provides an arrhythmia radio frequency ablation catheter capable of entering a ventricular wall for treatment, and can solve the problem that the ablation catheter entering the ventricular wall for treatment in the prior art cannot be fixedly attached to cardiac muscle.

The technical scheme of the utility model is as follows:

an arrhythmic radio frequency ablation catheter that can be accessed within a ventricular wall for treatment, comprising:

the catheter body is internally provided with an ablation electrode lead;

the probe is a conical body and is arranged in the catheter body, one end with the large diameter of the probe is connected to one end of the ablation electrode lead, the ablation electrode is arranged on the outer wall of the probe, and the ablation electrode lead is electrically connected with the ablation electrode;

the handle is detachably connected to one end, away from the probe, of the catheter body, a radio frequency generator is arranged in the handle, the radio frequency generator and one end, away from the probe, of the ablation electrode lead are fixed, and a negative pressure suction device is arranged on the handle;

the power supply mechanism is arranged in the handle, and the radio frequency generator and the negative pressure suction device are respectively and electrically connected with the power supply mechanism;

a plurality of suckers arranged in the circumferential direction of the catheter body;

the controller is arranged at one end of the handle, which is far away from the catheter body, the radio frequency generator and the negative pressure suction device are respectively and electrically connected with the controller through a control switch, and the control switch is electrically connected with the power supply mechanism.

Preferably, a guide wire is arranged in the catheter body and used for guiding the catheter body to enter a focus.

Preferably, the method further comprises the following steps: and the heat conduction element is sleeved on the catheter body and is respectively and electrically connected with the power supply mechanism and the controller.

Preferably, the heat conducting element is a metal coil.

Preferably, a plurality of filling holes are formed in the circumferential direction of the probe and used for filling cooling liquid.

Preferably, the outer wall of the probe is wrapped with a hydrophilic coating for reducing surface friction.

Preferably, the detachable connection structure of the handle and the catheter body is in threaded connection.

Compared with the prior art, the arrhythmia radio frequency ablation catheter capable of entering the ventricular wall for treatment has the beneficial effects that:

not only can melt the pathological change department on the myocardium, but also can get into the ventricular wall in to the endocardium department melt, and can make the sucking disc on the pipe that melts adsorb to the myocardium through negative pressure suction device suction air when melting, with the contact of myocardium, can be accurate melt the focus department, improved the efficiency of operation, the degree of depth of probe can be adjusted and control through the handle is accurate, has avoided the perforation condition of myocardium to take place, still is equipped with heat-conducting element, can make pathological change department thermally equivalent. In addition, the ablation catheter is a disposable and disposable catheter, is convenient and sanitary, has low production cost and is convenient to popularize and use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial schematic view of a probe of the present invention.

Detailed Description

The utility model provides an arrhythmia radio frequency ablation catheter capable of entering a ventricular wall for treatment, and the utility model is described below with reference to the schematic structural diagrams of fig. 1 to 2, but it should be understood that the scope of the utility model is not limited by the specific embodiments.

Examples

As shown in fig. 1, the present invention provides an arrhythmia rf ablation catheter capable of accessing the wall of a heart chamber for treatment, comprising: the device comprises a catheter body 1, a probe 2, a handle 3, a power supply mechanism, a sucker 4 and a controller. An ablation electrode lead 11 is arranged in the catheter body 1, and the ablation electrode lead 11 is used for transmitting energy; the probe 2 is a conical body and is arranged in the catheter body 1, one end of the probe 2 with a large diameter is connected to one end of the ablation electrode lead wire 11, the outer wall of the probe 2 is provided with an ablation electrode 21, and the ablation electrode lead wire 11 is electrically connected with the ablation electrode 21; the handle 3 is detachably connected with one end of the catheter body 1, which is far away from the probe 2, a radio frequency generator is arranged in the handle, the radio frequency generator and one end of the ablation electrode lead 11, which is far away from the probe 2, are fixed, and a negative pressure suction device is arranged on the handle 3; the power supply mechanism is arranged in the handle 3, the radio frequency generator and the negative pressure suction device are respectively and electrically connected with the power supply mechanism, and the power supply mechanism can be a storage battery or an external power supply arranged outside the handle 3; a plurality of suction cups 4 are arranged in the circumferential direction of the catheter body 1; the controller is arranged at one end of the handle 3, which is far away from the catheter body 1, the radio frequency generator and the negative pressure suction device are respectively electrically connected with the controller through the control switch, the control switch is electrically connected with the power supply mechanism, the radio frequency generator and the negative pressure suction device are opened and closed through the control switch during use, and the negative pressure suction device can be a micro air pump. Wherein, as shown in fig. 2, the probe 2 is a cone so that the tip part of the probe is convenient to enter the ventricular wall for treatment. When the catheter body 1 is close to the focus on the cardiac muscle, the negative pressure suction device can be started to suck, the sucker 4 can be adsorbed on the cardiac muscle, so that the ablation catheter is fixed, when the focus is on the endocardium of the cardiac wall, the catheter body 1 can be adsorbed on the cardiac muscle, and then the probe 2 is stretched into the cardiac wall to perform treatment. Further, the actual length of the catheter body 1 is longer than the scale drawn in fig. 1.

Furthermore, a guide silk thread is arranged in the catheter body 1 and used for guiding the catheter body 1 to enter a focus. The guide wire plays a role in guiding and controls the catheter body 1 to advance in the body, and the guide wire can be an alloy memory wire.

Further, the method also comprises the following steps: the heat conducting element 5 is sleeved on the catheter body 1, and the heat conducting element 5 is electrically connected with the power supply mechanism and the controller respectively. Wherein, the effect of heat conduction component 5 is for better transmission radio frequency current, makes pathological change department be heated evenly, reaches better ablation effect, has reduced the probability of postoperative relapse. When the heat conducting device is used, the heat conducting element 5 is opened and closed through a control switch on the controller.

Further, the heat conducting element 5 is a metal coil. The metal coil may be formed by spirally winding a metal wire, or a plurality of metal rings which are sleeved in parallel outside the catheter body 1. The metal coil may be made of metal materials such as stainless steel, copper, nichrome, titanium, or alloys between these metal materials, or the like, and the material of the metal coil is not limited.

Furthermore, a plurality of filling holes are formed in the circumferential direction of the probe 2 and used for filling cooling liquid. The cooling liquid is poured into the ablation electrode 21 through the pouring hole to cool the ablation electrode.

Furthermore, the outer wall of the probe 2 is wrapped with a hydrophilic coating for reducing the surface friction. The puncture ventricular wall and the guiding capability of the probe 2 are improved. The hydrophilic coating can adopt polyurethane urea, polyacrylic acid, polyacrylamide, polyallyl alcohol, polyacrylic acid-acrylamide and other high molecular polymers or monomer materials.

Further, the handle 3 is in threaded connection with the detachable connection structure of the catheter body 1. Wherein, the position that handle 3 and catheter body 1 are connected is equipped with the screw rod, and catheter body 1 inner wall is equipped with the internal thread that matches threaded connection with the screw rod, and rotatory screw rod can drive in the catheter body 1 and remove outside rather than fixed probe 2 to catheter body 1, can get into the ventricular wall and melt, controls the degree of depth that probe 2 got into the ventricular wall through the length of control screw rod whirl, can carry out accurate regulation and control, avoids the fenestrate condition of cardiac muscle to take place.

When the ablation catheter is used, the whole ablation catheter is extended to a focus, if the ablation catheter is positioned on a cardiac muscle, air can be sucked through the negative pressure suction device, the sucker 4 can be adsorbed on the cardiac muscle to fix the ablation catheter, when the focus is positioned on an inner membrane of the ventricular wall, the catheter body 1 can be adsorbed on the cardiac muscle, then the probe 2 is extended into the ventricular wall to enable the radio frequency generator to work, energy is transmitted to the ablation electrode 21 for treatment, the depth of the probe 2 entering the ventricular wall is controlled by controlling the length of the rotating screw rod, and accurate regulation and control can be carried out. The utility model has the advantages that the ablation can be carried out on the lesion position on the myocardium, the ablation can also be carried out on the endocardium position in the chamber wall, in addition, air can be sucked by the negative pressure suction device during the ablation so that the sucking disc on the ablation catheter is adsorbed to the myocardium and is contacted with the myocardium, the lesion position can be accurately ablated, the operation efficiency is improved, the depth of the probe can be accurately regulated and controlled by the handle, the myocardial perforation condition is avoided, and the heat conducting element is also arranged, so that the lesion position can be uniformly heated. In addition, the ablation catheter is a disposable and disposable catheter, is convenient and sanitary, has low production cost and is convenient to popularize and use.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. An arrhythmic radio frequency ablation catheter that can be accessed within a ventricular wall for treatment, comprising:

the catheter comprises a catheter body (1) which is internally provided with an ablation electrode lead (11);

the catheter comprises a catheter body (1), a probe (2) and a catheter tip, wherein the probe (2) is a conical body and is arranged in the catheter body (1), one end, with the large diameter, of the probe (2) is connected to one end of an ablation electrode lead (11), an ablation electrode (21) is arranged on the outer wall of the probe (2), and the ablation electrode lead (11) is electrically connected with the ablation electrode (21);

the handle (3) is detachably connected to one end, away from the probe (2), of the catheter body (1), a radio frequency generator is arranged in the handle, the radio frequency generator and one end, away from the probe (2), of the ablation electrode lead (11) are fixed, and a negative pressure suction device is arranged on the handle (3);

the power supply mechanism is arranged in the handle (3), and the radio frequency generator and the negative pressure suction device are respectively and electrically connected with the power supply mechanism;

a plurality of suction cups (4) provided in the circumferential direction of the catheter body (1);

the controller is arranged at one end, deviating from the catheter body (1), of the handle (3), the radio frequency generator and the negative pressure suction device are electrically connected with the controller through control switches respectively, and the control switches are electrically connected with the power supply mechanism.

2. An arrhythmia rf ablation catheter as claimed in claim 1 wherein the catheter body (1) has a guide wire for guiding the catheter body (1) into the lesion.

3. The arrhythmia rf ablation catheter as defined in claim 1 further comprising: and the heat conduction element (5) is sleeved on the catheter body (1), and the heat conduction element (5) is electrically connected with the power supply mechanism and the controller respectively.

4. An arrhythmic rf ablation catheter according to claim 3, wherein the heat conducting element (5) is a metal coil.

5. The arrhythmia radio frequency ablation catheter capable of entering the ventricular wall for treatment according to claim 1, wherein the probe (2) is provided with a plurality of perfusion holes in the circumferential direction for perfusion of cooling liquid.

6. An arrhythmia rf ablation catheter as claimed in claim 1 wherein the probe (2) is coated with a hydrophilic coating to reduce surface friction.

7. An arrhythmia rf ablation catheter as claimed in claim 1 wherein the detachable connection of the handle (3) to the catheter body (1) is a screw thread.