CN115813533A - Radio frequency ablation catheter and radio frequency ablation device - Google Patents

Abstract

The embodiment of the invention provides a radio frequency ablation catheter and a radio frequency ablation device, and relates to the technical field of radio frequency ablation. This radiofrequency ablation catheter includes the body, conductor silk and light source, the conductor silk sets up in the outer wall of body, the light source sets up in the body, when carrying out the radiofrequency ablation catheter operation, for example to varicose veins, after for the light source power supply and make the light source luminous, the light that sends of light source can see through blood vessel and skin, observed by operator's naked eye, in order to judge the position of conductor silk on the body, and then can accurately carry the conductor silk to the pathological change position, and carry high frequency circuit through the radiofrequency ablation appearance to the conductor silk, reach the purpose that the tissue was ablated, promptly, this radiofrequency ablation catheter can be under the condition with the help of external auxiliary observation equipment, accurately carry the radiofrequency ablation catheter to the pathological change position, reach the purpose that the tissue was ablated.

Description

Radio frequency ablation catheter and radio frequency ablation device

Technical Field

The invention relates to the technical field of radio frequency ablation, in particular to a radio frequency ablation catheter and a radio frequency ablation device.

Background

Radio frequency ablation is widely applied in minimally invasive surgery as a main thermal ablation means, for example, for heart diseases, varicose veins, neurological diseases and the like, lesion tissues can be ablated. The radiofrequency ablation catheter enters a blood vessel to reach a lesion part for ablation, moves under the action of a high-frequency electric field to form high-frequency current, generates joule heat at the same time, and rapidly rises the temperature, so that the tissue near the electrode is denatured and inactivated, and the purpose of tissue ablation is achieved.

In the prior art, in the process of the radio frequency ablation catheter operation, the position of the radio frequency ablation catheter is difficult to observe, the radio frequency ablation catheter is influenced to accurately reach a lesion position, or the position of the radio frequency ablation catheter needs to be observed with the help of CT equipment, and the complexity of the radio frequency ablation catheter operation is increased.

Disclosure of Invention

The invention provides a radio frequency ablation catheter and a radio frequency ablation device, which can accurately convey the radio frequency ablation catheter to a lesion position without the help of external auxiliary observation equipment, so as to achieve the purpose of tissue ablation.

Embodiments of the invention may be implemented as follows:

embodiments of the present invention provide a radio frequency ablation catheter comprising:

a pipe body;

the conductor wire is arranged on the outer wall of the pipe body; and

a light source disposed in the tube.

Optionally, the radiofrequency ablation catheter further comprises a tube wall sensor, a tube 5 cavity is defined in the tube body, a sensor mounting hole is arranged on the tube body, the sensor mounting hole is communicated with the tube cavity,

the pipe wall sensor is arranged in the sensor mounting hole.

Optionally, the pipe wall sensor is a temperature sensor or a pressure sensor.

Optionally, the number of the pipe wall sensors and the number of the sensor mounting holes are multiple, and each sensor mounting hole is provided with one pipe wall sensor;

and 0, or the number of the pipe wall sensors and the number of the sensor mounting holes are both one, and the pipe wall sensors are arranged in the sensor mounting holes. Optionally, the conductor wire is spirally wound on a part of the outer wall of the pipe body, and the pipe wall sensors are spirally distributed at intervals on the pipe body, wherein,

the conductor wire comprises a plurality of guide wire sections which are sequentially connected end to end along the axial lead direction of the pipe body, and a plurality of pipe wall sensors are exposed between adjacent guide wire sections.

Optionally, the rf ablation catheter site further comprises a displacement detection unit, and the displacement detection unit

The displacement detection unit is used for detecting the axial movement distance of the pipe body.

Optionally, the light source includes an annular light source and a light source conductive filament, the annular light source is electrically connected to the light source conductive filament, the annular light source is sleeved on the outer wall of the distal end of the tube body, and the light source conductive filament penetrates through the outer wall of the tube body and penetrates through the tube cavity.

Optionally, the radiofrequency ablation catheter further includes a tip and a distal end sensor, the tip is mounted to the distal end port of the catheter body, a sensor cavity is defined in the tip, and the distal end sensor is disposed in the sensor cavity.

Optionally, the number of the sensor chambers and the number of the distal sensors are both multiple, and one distal sensor is arranged in each sensor chamber;

or the number of the sensor cavities and the number of the far-end sensors are both one, and the far-end sensors are arranged in the sensor cavities.

Optionally, the tip is provided with a guide wire through hole.

The embodiment of the invention also provides a radio frequency ablation device, which comprises a radio frequency ablation instrument and the radio frequency ablation catheter, wherein the conductor wire is electrically connected with the radio frequency ablation instrument.

Optionally, the rf ablation instrument includes a control module, an rf module, and a display, the control module is electrically connected to the rf module and electrically connected to the display, and the conductor wire is electrically connected to the rf module.

The radio frequency ablation catheter and the radio frequency ablation device of the embodiment of the invention have the beneficial effects of, for example:

the embodiment of the invention provides a radio frequency ablation catheter, which comprises a catheter body, a conductor wire and a light source, wherein the conductor wire is arranged on the outer wall of the catheter body, the light source is arranged on the catheter body, when the radio frequency ablation catheter is used for surgery, for example, varicose veins are treated, after the light source is powered and made to emit light, the light emitted by the light source can penetrate through blood vessels and skin and is observed by naked eyes of an operator so as to judge the position of the conductor wire on the catheter body, and then the conductor wire can be accurately conveyed to a lesion position, and a high-frequency circuit is conveyed to the conductor wire through a radio frequency ablation instrument so as to achieve the purpose of tissue ablation.

The embodiment of the invention also provides a radio frequency ablation device, which comprises a radio frequency ablation instrument and the radio frequency ablation catheter, wherein the conductor wire is electrically connected with the radio frequency ablation instrument, and the radio frequency ablation device has all functions of the radio frequency ablation catheter.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope.

FIG. 1 is a schematic electrical circuit connection diagram of a radio frequency ablation device provided in an embodiment of the present invention;

fig. 2 is a schematic view of a radio frequency ablation catheter provided in an embodiment of the present invention;

FIG. 3 is a partial schematic view of a radio frequency ablation catheter provided in an embodiment of the present invention;

fig. 4 is an exploded view of a radio frequency ablation catheter provided in an embodiment of the present invention;

fig. 5 is a partial cross-sectional view of a radio frequency ablation catheter provided in an embodiment of the invention.

Icon: 1000-a radio frequency ablation catheter; 100-a tube body; 101-sensor mounting holes; 200-conductor wire; 210-a guide wire section; 300-a light source; 310-ring light source; 320-light source conductive filaments; 400-tube wall sensor; 500-a displacement detection unit; 510-mounting the housing; 520-a displacement sensor; 600-end; 601-guide wire through hole; 700-a distal sensor; 710-signal lines; 10-a radio frequency ablation instrument; 11-a control module; 12-a radio frequency module; 13-a display; 20-guide wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

As mentioned in the background, radio frequency ablation is widely used in minimally invasive surgery as a main thermal ablation means, and for example, for cardiac lesions, varicose veins, neurological diseases, etc., lesion tissues can be ablated. The radiofrequency ablation catheter enters a blood vessel to reach a lesion part for ablation, moves under the action of a high-frequency electric field to form high-frequency current, generates joule heat at the same time, and rapidly rises the temperature, so that the tissue near the electrode is denatured and inactivated, and the purpose of tissue ablation is achieved.

However, in the prior art, in the process of the radiofrequency ablation catheter operation, the position of the radiofrequency ablation catheter is difficult to observe, which affects the radiofrequency ablation catheter to accurately reach the lesion position, or the position of the radiofrequency ablation catheter needs to be observed with the help of a CT device, thereby increasing the complexity of the radiofrequency ablation catheter operation. Of course, the position of the radiofrequency ablation catheter can be acquired by arranging the developing ring on the radiofrequency ablation catheter to assist in observation, but the position of the radiofrequency ablation catheter still needs to be acquired by additionally adopting X-ray observation.

In view of the above, referring to fig. 1-5, the rf ablation catheter 1000 and the rf ablation device provided in the embodiments of the present invention can solve this problem, which will be described in detail below.

First, in the present invention, for convenience of description, the end of the rf ablation catheter 1000 inserted into the human body is referred to as "distal end", and the end opposite to the inserted direction is referred to as "proximal end".

The embodiment of the invention provides a radio frequency ablation device, which comprises a radio frequency ablation instrument 10 and a radio frequency ablation catheter 1000, wherein the radio frequency ablation catheter 1000 is connected with the radio frequency ablation instrument 10, and the radio frequency ablation catheter 1000 can accurately convey the radio frequency ablation catheter 1000 to a lesion position without the help of external auxiliary observation equipment, so that the purpose of tissue ablation is achieved.

Specifically, the rf ablation catheter 1000 includes a tube 100, a conductor wire 200 and a light source 300, wherein the tube 100 is a hollow tube 100, the inner wall of the tube 100 defines a lumen, the conductor wire 200 is disposed on the outer wall of the tube 100, and the light source 300 is fixedly connected to the tube 100, wherein the conductor wire 200 and the light source 300 are both electrically connected to the rf ablation instrument 10.

The pipe body 100 is generally a non-metal pipe, and may be made of engineering plastics or resin, such as polypropylene (PP), polytetrafluoroethylene (PTFE), and/or polyethylene terephthalate (PET). The catheter body 100 may also be made of a part or all of a metal tube, such as stainless steel or aluminum, to ensure structural strength and to form the rf ablation catheter 1000 with high hardness.

Further, the rf ablatograph 10 includes a control module 11, an rf module 12 and a display 13, the light source 300 is electrically connected to the control module 11 to facilitate power supply or light emitting frequency control of the light source 300, and the control module 11 is electrically connected to the display 13.

The display 13 can display the frequency of the current supplied to the conductor wire 200, the conductor wire 200 is electrically connected to the radio frequency module 12, and the control module 11 controls the radio frequency module 12 to supply the high frequency current to the conductor wire 200, so that the temperature of the conductor wire 200 can be rapidly raised, and the tissue near the conductor wire 200 can be denatured and inactivated.

It should be noted that, in other embodiments, the light source 300 may not need to be powered by the control module 11 of the rf ablatograph 10, and the light source 300 itself has a battery to meet the power supply requirement of the light source 300.

Further, the light source 300 includes a ring-shaped light source 310 and a light source conductive filament 320, the ring-shaped light source 310 is a light source with a circular ring-shaped structure, so that the light emitted from the ring-shaped light source 310 can be observed under multiple viewing angles, but in other embodiments, the light source 300 may also be a point light source, such as an LED point light source.

The annular light source 310 may be an LED light source, or an infrared light source with a higher transmittance. The annular light source 310 is electrically connected to the light source conductive filament 320, and the light source conductive filament 320 penetrates through the outer wall of the tube 100 and is disposed in the tube cavity.

Specifically, one end of the power conductive wire, which is far away from the annular light source 310, is electrically connected to the control module 11, and the annular light source 310 is sleeved on the outer wall of the distal end of the tube body 100 and is located at the distal end of the conductive wire 200, so as to determine the position of the conductive wire 200.

When the radiofrequency ablation catheter 1000 is used for surgery, for example, after the radiofrequency ablation catheter 1000 is inserted into a blood vessel of a human body for varicose veins, after the light source 300 emits light, the light emitted by the light source 300 can penetrate through the blood vessel and the skin and be observed by naked eyes of an operator to judge the position of the conductor wire 200 on the catheter body 100, so that the conductor wire 200 can be accurately conveyed to a lesion position, and the high-frequency current is conveyed to the conductor wire 200 through the radiofrequency ablation instrument 10, so that the purpose of tissue ablation is achieved.

Namely, the radiofrequency ablation catheter 1000 can accurately deliver the radiofrequency ablation catheter 1000 to a lesion position without the help of external auxiliary observation equipment, so as to achieve the purpose of tissue ablation.

Meanwhile, under the illumination of the light source 300, the operator can also roughly observe the blood vessel image from the outside of the body.

It is understood that in this embodiment, the light source 300 can emit visible light to be observed by the operator 5, and in other embodiments, the ring-shaped light source 310 of the light source 300 can emit no visible light

The visible light may be, for example, an infrared light source that may emit infrared light, and at this time, the observation may be performed by an optical device, for example, an infrared imaging device, or, of course, other light sources that emit invisible light may also be used, and the invisible light is acquired by a photoelectric receiver or an optical imaging device, so that an operator may determine the position of the radiofrequency ablation catheter 1000.

0 in order to facilitate detection of an obstruction in a blood vessel, where the obstruction may be understood as a thrombus in the blood vessel, or may also be detected at a turn of the blood vessel, the rf ablation catheter 1000 further includes a tip 600 and a distal sensor 700, the tip 600 is mounted at a distal port of the catheter body 100, a sensor chamber is defined in the tip 600, and the distal sensor 700 is disposed in the sensor chamber.

In this embodiment, the tip 600 is made of a flexible material with biosafety, where the flexible material for bio-installation of 5 can be Pebax (polyether block polyamide), and the distal sensor 700

The remote sensor 700 is electrically connected to the control module 11 through a signal line 710, the signal line 710 of the remote sensor 700 can penetrate through the lumen of the catheter body 100 and then is electrically connected to the control module 11, and the data information fed back by the remote sensor 700 can be processed by the control module 11 and then displayed on the display 13 as a specific pressure value.

0 number and distal Transmission of sensor Chambers to enhance the sensing capability of the RF ablation catheter 1000

The number of the sensors 700 is plural, and one remote sensor 700 is disposed in each sensor chamber, specifically, in the present embodiment, the number of the remote sensors 700 is four, and the number of the sensor chambers is also four.

Of course, in other embodiments, the number of sensor chambers and the number of remote sensors may both be one, with the remote sensors being disposed within the sensor chambers.

In order to conveniently deliver the whole rf ablation catheter 1000 to the lesion position, a guide wire may be used to deliver the rf ablation catheter 1000, specifically, a guide wire through hole 601 is formed in the tip 600, and the guide wire 20 may sequentially pass through the guide wire through hole 601 and the inner cavity of the catheter body 100.

Specifically, when performing the rf ablation catheter operation, the guide wire 20 needs to be inserted into a blood vessel to form a delivery track, and then the guide wire through hole 601 of the rf ablation catheter 1000 and the inner cavity of the tube body 100 are sequentially penetrated by the guide wire 20, so that the rf ablation catheter 1000 can be delivered into the blood vessel along the guide wire 20.

In addition, in this embodiment, the rf ablation catheter 1000 further includes a tube wall sensor 400, the tube body 100 is provided with a sensor mounting hole 101, the sensor mounting hole 101 is communicated with the lumen, the tube wall sensor 400 is provided in the sensor mounting hole 101, and the tube wall sensor 400 is a temperature sensor or a pressure sensor.

And the number of the pipe wall sensors 400 and the number of the sensor mounting holes 101 are plural, and the number of the sensor mounting holes 101 is plural, and it can be understood that there are at least two, and each sensor mounting hole 101 is provided with one pipe wall sensor 400, wherein the conductor wire 200 is spirally wound on a part of the outer wall of the pipe body 100, and the pipe wall sensors 400 are spirally distributed at intervals on the pipe body 100.

Of course, in other embodiments, the number of the pipe wall sensors 400 and the number of the annular light source sensor mounting holes 101 may be one, and the pipe wall sensors 400 are disposed in the sensor mounting holes 101, where the number of the pipe wall sensors 400 and the number of the sensor mounting holes 101 are not limited. Specifically, the conductor wire 200 includes a plurality of guide wire sections 210 connected end to end in sequence along the axial lead direction of the pipe body 100, and a plurality of pipe wall sensors 400 are exposed between adjacent guide wire sections 210, that is, the conductor wire 200 in a thread shape has a thread pitch, so as to conveniently set the pipe wall sensors 400, and simultaneously, the influence on the data information collected by the pipe wall sensors 400 is also avoided.

In addition, since the conductor wire 200 is spirally wound on a part of the outer wall of the pipe body 100, the pipe wall sensors 400 are spirally spaced on the pipe body 100, and in other embodiments, the conductor wire can be used according to the present invention

The distribution of the conductor wires 200 can be adjusted to adjust the positions of the tube wall sensors 400 distributed on the tube 100 to 5 degrees, so long as the conductor wires 200 do not block the tube wall sensors 400.

In this embodiment, the tube wall sensor 400 may be a temperature sensor, and the tube wall sensor 400 is located between the adjacent wire segments 210, so as to accurately obtain the temperature of the wire segments 210, thereby avoiding the blood vessel from being damaged due to the overhigh temperature of the wire segments 210, and meanwhile, avoiding the purpose that the tissue ablation cannot be completed due to the overlow temperature of the wire segments 210.

Specifically, the pipe wall sensor 400 is electrically connected to the control module 11, and the acquired temperature information is transmitted

The information is fed back to the control module 11, and the control module 11 processes the temperature information and then transmits the processed temperature information to the display 13 for displaying, so that an operator can know the temperature of the conductor wire 200 conveniently.

Of course, when the temperature of the conductor wire 200 is too high, the control module 11 may send a signal to the rf module 12 to increase the current frequency, or when the temperature of the conductor wire 200 is too low 5, the control module 11 may send a signal to the rf module 12 to decrease the current frequency.

In addition, the vessel wall sensor 400 may also be a pressure sensor to conveniently determine whether the purpose of vessel ablation is achieved, and it is easily understood that after ablation of a diseased region of a vessel is completed, a blood vessel near the conductive wire 200 may be atrophied, resulting in an increase in blood flow rate near the conductive wire 200, which is a problem that a blood vessel is not ablated

In the meantime, the pressure value obtained by the tube wall sensor 400 may be reduced, and at the same time, the pressure value may tend to be stable after being reduced to 0 to a certain degree.

At this time, the ablation of the vascular lesion site is completed, and the pressure value can be displayed on the display 13, so that the operator can determine whether the ablation of the vascular lesion site is completed according to the pressure value or the stable signal characteristic of the pressure value region.

In addition, it should be noted that, in order to accurately obtain the length of the rf ablation catheter 1000 inserted into the blood vessel of the human body or the length of the rf ablation catheter 1000 extracted from the blood vessel of the human body, the rf ablation catheter 1000 further includes a displacement detection unit 500, the displacement detection unit 500 is disposed on the catheter body 100, and the displacement detection unit 500 is configured to detect the axial movement distance of the catheter body 100.

Specifically, the displacement sensing unit includes a mounting housing 510 and a displacement sensor 520, the displacement sensor 520 is fixed in the mounting housing 510, for example, the displacement sensor 520 may be a grating sensor, the tubular body 100 of the rf ablation catheter 1000 is slidably disposed on the mounting housing 510, for example, a through hole is formed on the mounting housing 510, so as to facilitate the tubular body 100 of the rf ablation catheter 1000 to pass through the mounting housing 510.

The displacement sensor 520 is electrically connected with the control module 11, and the control module 11 can transmit the displacement information of the catheter body 100 acquired by the displacement sensor 520 to the display 13, so that an operator can intuitively acquire the length of the radiofrequency ablation catheter 1000 inserted into a human blood vessel or the extracted length of the radiofrequency ablation catheter 1000 from the human blood vessel.

In addition, in the case that the wall sensor 400 is a pressure sensor, the cross-sectional shape of the blood vessel at the corresponding position can be obtained by combining the value fed back by the displacement sensor 520, and the shape of the blood vessel through which the rf ablation catheter 1000 passes can be obtained through continuous position information.

Specifically, under the condition that the distance between the inner wall of the blood vessel and the wall sensor 400 is different, the speed of the blood flow also changes, for example, the smaller the distance between the inner wall of the blood vessel and the wall sensor 400 is, the faster the blood flow flows through the blood vessel at this time, the smaller the pressure value obtained by the wall sensor 400 is, the larger the distance between the inner wall of the blood vessel and the wall sensor 400 is, the slower the blood flow flows through the blood vessel at this time, and the larger the pressure value obtained by the wall sensor 400 is.

Meanwhile, the tube wall sensors 400 are distributed on the tube body 100 in a spiral shape, and then the shape of the blood vessel can be obtained according to the plurality of tube wall sensors 400 distributed on the tube body 100, and meanwhile, the displacement sensor 520 can record the position of the radiofrequency ablation catheter 1000 at the moment, namely, the position of the tube wall sensor 400, and further the shape of the specific position of the blood vessel can be obtained, and the shape of the blood vessel through which the radiofrequency ablation catheter 1000 passes can be obtained by continuously recording the shape of the blood vessel under the condition of the positions of different radiofrequency ablation catheters 1000, namely, the overall shape of the blood vessel at the interventional position is judged.

For the convenience of observation by an operator, the tube wall sensor 400 and the displacement sensor 520 are both fed back to the control module 11, processed by the control module 11, and then transmitted to the display 13, so that the two-dimensional or three-dimensional shape of the blood vessel can be more visually seen on the display 13.

In summary, the embodiment of the present invention provides a radio frequency ablation catheter 1000, which includes a tube 100, a conductive wire 200 and a light source 300, wherein the conductive wire 200 is disposed on an outer wall of the tube 100, and the light source 300 is disposed on the tube 100, when a radio frequency ablation catheter 1000 is used for surgery, for example, for varicose veins, after the light source 300 is powered and the light source 300 emits light, the light emitted by the light source 300 can penetrate through blood vessels and skin to be observed by naked eyes of an operator, so as to determine a position of the conductive wire 200 on the tube 100, and further, the conductive wire 200 can be accurately conveyed to a lesion position, and a radio frequency ablation instrument 10 is used to convey a high frequency current to the conductive wire 200, so as to achieve a purpose of tissue ablation, that is, the radio frequency ablation catheter 1000 can accurately convey the radio frequency ablation catheter 1000 to the lesion position without an external auxiliary observation device, and achieve a purpose of tissue ablation.

The embodiment of the invention also provides a radio frequency ablation device, which comprises a radio frequency ablation instrument 10 and the radio frequency ablation catheter 1000, wherein the conductor wire 200 and the light source 300 are electrically connected with the radio frequency ablation instrument 10, and the radio frequency ablation device has all functions of the radio frequency ablation catheter 1000.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (12)

1. A radio frequency ablation catheter, comprising:

a pipe body (100);

a conductor wire (200), wherein the conductor wire (200) is arranged on the outer wall of the pipe body (100); and

a light source (300), the light source (300) being disposed at the tube (100).

2. The radiofrequency ablation catheter as recited in claim 1, further comprising a wall sensor (400), wherein a lumen is defined in the catheter body (100), a sensor mounting hole (101) is formed in the catheter body (100), the sensor mounting hole (101) is communicated with the lumen, and the wall sensor (400) is disposed in the sensor mounting hole (101).

3. The rf ablation catheter according to claim 2, wherein the wall sensor (400) is a temperature sensor or a pressure sensor.

4. The rf ablation catheter according to claim 2, wherein the number of the wall sensor (400) and the sensor mounting hole (101) is plural, and one wall sensor (400) is provided for each sensor mounting hole (101);

or the number of the pipe wall sensor (400) and the number of the sensor mounting holes (101) are both one, and the pipe wall sensor (400) is arranged in the sensor mounting holes (101).

5. The radiofrequency ablation catheter as recited in claim 4, wherein the conductor wire (200) is spirally wound around a portion of the outer wall of the tubular body (100), and the wall sensors (400) are spirally spaced around the tubular body (100), wherein the conductor wire (200) comprises a plurality of guide wire segments (210) connected end to end in sequence along the axial direction of the tubular body (100), and the wall sensors (400) are exposed between adjacent guide wire segments (210).

6. The radiofrequency ablation catheter as recited in claim 4, further comprising a displacement detection unit (500), wherein the displacement detection unit (500) is disposed on the catheter body (100), and the displacement detection unit (500) is configured to detect an axial movement distance of the catheter body (100).

7. The radiofrequency ablation catheter of claim 2, wherein the light source (300) comprises an annular light source (310) and a light source conductive wire (320), the annular light source (310) and the light source conductive wire (320) are electrically connected, the annular light source (310) is sleeved on the outer wall of the distal end of the tube body (100), and the light source conductive wire (320) penetrates through the outer wall of the tube body (100) and is arranged in the lumen.

8. The rf ablation catheter as recited in claim 1, further comprising a tip (600) and a distal sensor (700), the tip (600) being mounted to the distal port of the catheter body (100), the tip (600) defining a sensor chamber therein, the distal sensor (700) being disposed within the sensor chamber.

9. The rf ablation catheter of claim 8, wherein the number of sensor chambers and the number of distal sensors (700) are each plural, one distal sensor (700) being disposed in each sensor chamber;

or the number of sensor chambers and the number of distal sensors (700) are both one, the distal sensors (700) being disposed within the sensor chambers.

10. The radiofrequency ablation catheter of claim 8, wherein the tip (600) is provided with a guidewire through hole (601).

11. A radiofrequency ablation device, comprising a radiofrequency ablator (10) and the radiofrequency ablation catheter of any one of claims 1-10, the conductor wire (200) being electrically connected to the radiofrequency ablator (10).

12. The radiofrequency ablation device of claim 11, wherein the radiofrequency ablator (10) comprises a control module (11), a radiofrequency module (12), and a display (13), the control module (11) and the radiofrequency module (12) being electrically connected, and being electrically connected to the display (13), the conductor wire (200) being electrically connected to the radiofrequency module (12).

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