Radiofrequency ablation catheter and radiofrequency ablation device

Abstract

Embodiments of the present invention provide a radiofrequency ablation catheter and a radiofrequency ablation device, relating to the technical field of radiofrequency ablation. The radiofrequency ablation catheter includes a catheter body, a conductor wire, and a light source. The conductor wire is disposed on the outer wall of the catheter body, and the light source is disposed in the catheter body. When performing a radiofrequency ablation catheter operation, for example, for varicose veins, after powering the light source and making it emit light, the light emitted by the light source can penetrate through the blood vessel and the skin and be observed by the operator with the naked eye to determine the position of the conductor wire on the catheter body. Furthermore, the conductor wire can be accurately delivered to the lesion site, and a high-frequency circuit is delivered to the conductor wire through a radiofrequency ablation instrument to achieve the purpose of tissue ablation. That is, the radiofrequency ablation catheter can accurately deliver the radiofrequency ablation catheter to the lesion site without the need to rely on external auxiliary observation equipment to achieve the purpose of tissue ablation.

Description

Technical Field

[0001] The present invention relates to the technical field of radiofrequency ablation, and in particular, to a radiofrequency ablation catheter and a radiofrequency ablation device. Background Art

[0002] Radiofrequency ablation, as a main thermal ablation method, is widely used in minimally invasive surgeries. For example, for heart diseases, varicose veins, and neurological diseases, etc., it can ablate diseased tissues. The radiofrequency ablation catheter enters the blood vessel and reaches the diseased site for ablation. Under the action of a high-frequency electric field, it moves to form a high-frequency current, and at the same time generates Joule heat, the temperature rises rapidly, causing the tissue near the electrode to denature and inactivate, achieving the purpose of tissue ablation.

[0003] In the prior art, during the process of radiofrequency ablation catheter surgery, the position of the radiofrequency ablation catheter is difficult to observe, which affects the accurate reaching of the radiofrequency ablation catheter to the diseased position, or it is necessary to use a CT device to assist in observing the position of the radiofrequency ablation catheter, increasing the complexity of the radiofrequency ablation catheter surgery. Summary of the Invention

[0004] The present invention provides a radiofrequency ablation catheter and a radiofrequency ablation device, which can accurately deliver the radiofrequency ablation catheter to the diseased position without the need to rely on external auxiliary observation equipment, achieving the purpose of tissue ablation.

[0005] Embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the present invention provides a radiofrequency ablation catheter, which includes:

[0007] A tube body;

[0008] A conductor wire, the conductor wire is arranged on the outer wall of the tube body; and

[0009] A light source, the light source is arranged on the tube body.

[0010] Optionally, the radiofrequency ablation catheter further includes a tube wall sensor. A tube cavity is defined in the tube body, and a sensor mounting hole is provided on the tube body. The sensor mounting hole communicates with the tube cavity.

[0011] The tube wall sensor is arranged in the sensor mounting hole.

[0012] Optionally, the tube wall sensor is a temperature sensor or a pressure sensor.

[0013] Optionally, the number of the tube wall sensors and the number of the sensor mounting holes are both multiple, and each sensor mounting hole is provided with one tube wall sensor;

[0014] Either 0 or the number of the tube wall sensors and the sensor mounting holes is one, and the tube wall sensor is disposed in the sensor mounting hole. Optionally, the conductor wire is spirally wound around a part of the outer wall of the tube body, and the tube wall sensors are spirally and spacedly distributed on the tube body, wherein,

[0015] The conductor wire includes a plurality of wire segments connected end to end in sequence along the axial center line direction of the tube body, and a plurality of the tube wall sensors are exposed between adjacent wire segments.

[0016] 5 Optionally, the radiofrequency ablation catheter further includes a displacement detection unit, and the displacement detection unit

[0017] is disposed on the tube body, and the displacement detection unit is used to detect the axial movement distance of the tube body.

[0018] Optionally, the light source includes an annular light source and a light source conducting wire, the annular light source and the light source conducting wire are electrically connected, the annular light source is sleeved on the outer wall of the distal end of the tube body, and the light source conducting wire penetrates through the outer wall of the tube body and is disposed in the tube cavity.

[0019] 0 Optionally, the radiofrequency ablation catheter further includes a tip and a distal sensor, the tip is installed at the distal end port of the tube body, a sensor chamber is defined in the tip, and the distal sensor is disposed in the sensor chamber.

[0020] Optionally, the number of the sensor chambers and the number of the distal sensors are both multiple, and one distal sensor is disposed in each sensor chamber;

[0021] or the number of the sensor chambers and the number of the distal sensors is one, and the distal sensor is disposed in the sensor chamber.

[0022] Optionally, the tip is provided with a guide wire through hole.

[0023] An embodiment of the present invention further provides a radiofrequency ablation device, including a radiofrequency ablation instrument and the above-mentioned radiofrequency ablation catheter, and the conductor wire is electrically connected to the radiofrequency ablation instrument.

[0024] Optionally, the radiofrequency ablation instrument includes a control module, a radiofrequency module and a display, the control module and the radiofrequency module are electrically connected and are electrically connected to the display, and the conductor wire and the radiofrequency module are electrically connected.

[0025] The beneficial effects of the radiofrequency ablation catheter and the radiofrequency ablation device according to the embodiments of the present invention include, for example:

[0026] Embodiments of the present invention provide a radiofrequency ablation catheter, which includes a catheter body, a conductor wire, and a light source. The conductor wire is disposed on the outer wall of the catheter body, and the light source is disposed in the catheter body. When performing a radiofrequency ablation catheter operation, for example, for varicose veins, after powering the light source and making it emit light, the light emitted by the light source can penetrate through the blood vessel and the skin and be observed by the operator with the naked eye to determine the position of the conductor wire on the catheter body. Furthermore, the conductor wire can be accurately delivered to the lesion site, and a high-frequency circuit is delivered to the conductor wire through a radiofrequency ablation instrument to achieve the purpose of tissue ablation. That is, the radiofrequency ablation catheter can accurately deliver the radiofrequency ablation catheter to the lesion site without the need to rely on external auxiliary observation equipment to achieve the purpose of tissue ablation.

[0027] Embodiments of the present invention also provide a radiofrequency ablation device, which includes a radiofrequency ablation instrument and the above-mentioned radiofrequency ablation catheter. The conductor wire is electrically connected to the radiofrequency ablation instrument, and this radiofrequency ablation device has all the functions of the radiofrequency ablation catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope.

[0029] Figure 1 It is a schematic circuit connection diagram of the radiofrequency ablation device provided in the embodiments of the present invention;

[0030] Figure 2 It is a schematic diagram of the radiofrequency ablation catheter provided in the embodiments of the present invention;

[0031] Figure 3 It is a partial schematic diagram of the radiofrequency ablation catheter provided in the embodiments of the present invention;

[0032] Figure 4 It is an exploded view of the radiofrequency ablation catheter provided in the embodiments of the present invention;

[0033] Figure 5 It is a partial cross-sectional view of the radiofrequency ablation catheter provided in the embodiments of the present invention.

[0034] ICON: 1000 - Radiofrequency ablation catheter; 100 - Catheter body; 101 - Sensor mounting hole; 200 - Conductor wire; 210 - Guide wire segment; 300 - Light source; 310 - Ring light source; 320 - Light source conductive wire; 400 - Wall sensor; 500 - Displacement detection unit; 510 - Mounting housing; 520 - Displacement sensor; 600 - End head; 601 - Guide wire through hole; 700 - Distal sensor; 710 - Signal wire; 10 - Radiofrequency ablation instrument; 11 - Control module; 12 - Radiofrequency module; 13 - Display; 20 - Guide wire. Detailed implementation manners

[0035] To make the objectives, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0037] It should be noted that: like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0039] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0040] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0041] As mentioned in the background art, radiofrequency ablation, as a major thermal ablation method, is widely used in minimally invasive surgeries. For example, for heart diseases, varicose veins, and neurological diseases, etc., it can ablate diseased tissues. The radiofrequency ablation catheter enters the blood vessel and reaches the diseased site for ablation. Under the action of a high-frequency electric field, it moves to form a high-frequency current, and at the same time generates Joule heat, the temperature rises rapidly, causing the tissues near the electrode to denature and inactivate, achieving the purpose of tissue ablation.

[0042] However, in the prior art, during the radiofrequency ablation catheter surgery, the position of the radiofrequency ablation catheter is difficult to observe, which affects the accurate reaching of the radiofrequency ablation catheter to the lesion site. Or it is necessary to use a CT device to assist in observing the position of the radiofrequency ablation catheter, increasing the complexity of the radiofrequency ablation catheter surgery. Of course, it is also possible to set a radiopaque ring on the radiofrequency ablation catheter to assist in observation, but still need to use X-ray for observation to obtain the position of the radiofrequency ablation catheter.

[0043] In view of this, please refer to Figures 1 - 5 , in the embodiments of the present invention, the radiofrequency ablation catheter 1000 and the radiofrequency ablation device provided can solve this problem, and the following will be described in detail.

[0044] First of all, it should be noted that in the present invention, for the convenience of description, one end of the radiofrequency ablation catheter 1000 in the direction of piercing into the human body is called the "distal end", and the end facing away from the direction of piercing into the human body is called the "proximal end".

[0045] The embodiments of the present invention provide a radiofrequency ablation device, which includes a radiofrequency ablation instrument 10 and a radiofrequency ablation catheter 1000. The radiofrequency ablation catheter 1000 is connected to the radiofrequency ablation instrument 10. The radiofrequency ablation catheter 1000 can accurately deliver the radiofrequency ablation catheter 1000 to the lesion site without the need to rely on external auxiliary observation equipment, so as to achieve the purpose of tissue ablation.

[0046] Specifically, the radiofrequency ablation catheter 1000 includes a tube body 100, a conductor wire 200, and a light source 300. The tube body 100 is a hollow tube body 100, and the inner wall of the tube body 100 defines a lumen. The conductor wire 200 is disposed on the outer wall of the tube body 100, and the light source 300 is fixedly connected to the tube body 100. Among them, both the conductor wire 200 and the light source 300 are electrically connected to the radiofrequency ablation instrument 10.

[0047] Among them, the tube body 100 is usually a non-metallic tube, for example, it can be made of engineering plastics or resins, such as polypropylene (PP), polytetrafluoroethylene (PTFE), and / or polyethylene terephthalate (PET), etc. The tube body 100 can also be made of a partial or all-metal tube, such as stainless steel or aluminum tube, to ensure the structural strength and make the radiofrequency ablation catheter 1000 with higher hardness.

[0048] Furthermore, the radiofrequency ablation instrument 10 includes a control module 11, a radiofrequency module 12, and a display 13. The light source 300 is electrically connected to the control module 11 to facilitate the power supply or the control of the emission frequency of the light source 300. In addition, the control module 11 is electrically connected to the display 13.

[0049] The display 13 can display the current frequency supplied to the conductor wire 200. The conductor wire 200 is electrically connected to the RF module 12, and the control module 11 controls the RF module 12 to supply high-frequency current to the conductor wire 200, so that the conductor wire 200 can be quickly heated up, and the tissue near the conductor wire 200 is denatured and inactivated.

[0050] It should be noted that in other embodiments, the light source 300 may also be powered without the control module 11 of the RF ablation instrument 10. The light source 300 is provided with its own battery to meet the power supply requirements of the light source 300.

[0051] Further, the light source 300 includes an annular light source 310 and a light source conductive wire 320. The annular light source 310 is a light source with a circular ring structure, so that the light emitted by the annular light source 310 can be observed from multiple perspectives. Of course, in other embodiments, the light source 300 may also use a point light source, such as an LED point light source.

[0052] Among them, the annular light source 310 can be an LED light source or an infrared light source with stronger penetrability. The annular light source 310 is electrically connected to the light source conductive wire 320. The light source conductive wire 320 penetrates through the outer wall of the tube body 100 and is disposed in the lumen.

[0053] Specifically, one end of the power conductive wire far from the annular light source 310 is electrically connected to the control module 11. 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 conductor wire 200, so as to be able to determine the position of the conductor wire 200.

[0054] During the operation of the RF ablation catheter 1000, for example, for varicose veins, after the RF ablation catheter 1000 is inserted into the human blood vessel, 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 the operator with the naked eye, so as to judge the position of the conductor wire 200 on the tube body 100. Furthermore, the conductor wire 200 can be accurately delivered to the lesion site, and the RF ablation instrument 10 is used to supply high-frequency current to the conductor wire 200 to achieve the purpose of tissue ablation.

[0055] That is, the RF ablation catheter 1000 can accurately deliver the RF ablation catheter 1000 to the lesion site without the need to rely on external auxiliary observation equipment, so as to achieve the purpose of tissue ablation.

[0056] At the same time, under the illumination of the light source 300, the operator can also roughly observe the blood vessel image from outside the body.

[0057] It is easy to understand that in this embodiment, the light source 300 can emit visible light and be directly observed by the operator. In other embodiments, the annular light source 310 of the light source 300 can also emit invisible light.

[0058] It can be visible light, such as an infrared light source that can emit infrared rays. At this time, it can be observed through an optical device, such as an infrared imaging device. Of course, it can also be a light source that emits invisible light, and the invisible light can be obtained through a photoelectric receiver or an optical imaging device, which is convenient for the operator to judge the position of the radiofrequency ablation catheter 1000.

[0059] 0 In order to conveniently detect whether there are obstacles in the blood vessel, the obstacles here can be understood as blood clots in the blood vessel, or it can also detect the turning of the blood vessel. The radiofrequency ablation catheter 1000 further includes a tip 600 and a distal sensor 700. The tip 600 is installed at the distal port of the tube body 100, and a sensor chamber is defined in the tip 600. The distal sensor 700 is disposed in the sensor chamber.

[0060] In this embodiment, the tip 600 is made of a flexible material with biosecurity. The flexible material for biosecurity here can be Pebax (polyether block polyamide), and the distal sensor 700

[0061] is a pressure sensor. The distal sensor 700 is electrically connected to the control module 11 through a signal line 710. The signal line 710 of the distal sensor 700 can pass through the lumen of the tube body 100 and then be electrically connected to the control module 11. After the data information fed back by the distal sensor 700 is processed by the control module 11, the specific pressure value can be displayed on the display 13.

[0062] 0 In order to enhance the sensing ability of the radiofrequency ablation catheter 1000, the number of sensor chambers and the number of distal sensors

[0063] 700 are both multiple. One distal sensor 700 is disposed in each sensor chamber. Specifically, in this embodiment, the number of distal sensors 700 is four, and the number of sensor chambers is also four.

[0064] Of course, in other embodiments, the number of sensor chambers and the number of distal sensors can also be both one, and the distal sensor is disposed in the sensor chamber.

[0065] Among them, in order to conveniently deliver the entire radiofrequency ablation catheter 1000 to the lesion location, a guide wire can be used to deliver the radiofrequency ablation catheter 1000. Specifically, a guide wire through hole 601 is provided on the tip 600, and the guide wire 20 can sequentially pass through the guide wire through hole 601 and the lumen of the tube body 100.

[0066] Specifically, when performing a radiofrequency ablation catheter operation, the guide wire 20 needs to be first inserted into a blood vessel to form a delivery track. Then, the guide wire through-hole 601 of the radiofrequency ablation catheter 1000 and the inner cavity of the catheter body 100 are sequentially penetrated by the guide wire 20, and thus the radiofrequency ablation catheter 1000 can be delivered into the blood vessel along the guide wire 20.

[0067] In addition, in this embodiment, the radiofrequency ablation catheter 1000 further includes a wall sensor 400. The catheter body 100 is provided with a sensor mounting hole 101. The sensor mounting hole 101 communicates with the lumen. The wall sensor 400 is disposed in the sensor mounting hole 101. The wall sensor 400 is a temperature sensor or a pressure sensor.

[0068] Moreover, the number of both the wall sensor 400 and the sensor mounting hole 101 is multiple. Herein, the multiple can be understood as at least two. Each sensor mounting hole 101 is provided with one wall sensor 400. Among them, the conductor wire 200 is spirally wound around a part of the outer wall of the catheter body 100, and the wall sensors 400 are spirally and spacedly distributed on the catheter body 100.

[0069] Of course, in other embodiments, the number of both the wall sensor 400 and the annular light source sensor mounting hole 101 can also be one. The wall sensor 400 is disposed in the sensor mounting hole 101. Herein, the number of the wall sensor 400 and the number of the sensor mounting hole 101 are not limited. Specifically, the conductor wire 200 includes a plurality of wire segments 210 that are sequentially connected end to end along the axis of the catheter body 100. A plurality of wall sensors 400 are exposed between adjacent wire segments 210. That is, the spiral-shaped conductor wire 200 has a thread pitch to facilitate the setting of the wall sensors 400 and at the same time avoid affecting the wall sensors 400 from collecting data information.

[0070] In addition, since the conductor wire 200 is spirally wound around a part of the outer wall of the catheter body 100, the wall sensors 400 are spirally and spacedly distributed on the catheter body 100. In other embodiments, it can be adjusted according to the specific

[0071] distribution pattern of the conductor wire 200 so that the multiple wall sensors 400 are distributed at the 5 positions on the catheter body 100, as long as it can be ensured that the conductor wire 200 does not block the wall sensors 400.

[0072] In this embodiment, the wall sensor 400 can be a temperature sensor, and the wall sensor 400 is located between adjacent wire segments 210, which can accurately obtain the temperature of the wire segments 210, avoid damage to the blood vessel due to too high temperature of the wire segments 210, and at the same time avoid the temperature of the wire segments 210 being too low to achieve the purpose of tissue ablation.

[0073] 0 Specifically, the tube wall sensor 400 is electrically connected to the control module 11, and feeds back the acquired temperature information to the control module 11. The control module 11 processes the temperature information and then transmits it to the display 13 for display, so that the operator can know the temperature of the conductor wire 200.

[0074] Of course, when the temperature of the conductor wire 200 is too high, the control module 11 can send a signal to the radio frequency module 12 to increase the current frequency. Or, when the temperature of the conductor wire 200 is too low, the control module 11 can send a signal to the radio frequency module 12 to decrease the current frequency.

[0075] In addition, the tube wall sensor 400 can also be a pressure sensor to facilitate judging whether the purpose of blood vessel ablation is achieved. It is easy to understand that after the ablation of the blood vessel lesion site is completed, the blood vessels near the conductor wire 200 will atrophy, resulting in an increase in the blood flow velocity near the conductor wire 200.

[0076] At this time, the pressure value obtained by the tube wall sensor 400 will decrease. At the same time, after the pressure value decreases to a certain extent, it can tend to be stable.

[0077] At this time, the ablation of the blood vessel lesion site is completed. At the same time, the pressure value can be displayed on the display 13, and the operator can judge whether the ablation of the blood vessel lesion site is completed according to the pressure value or the signal characteristics of the pressure value region being stable.

[0078] In addition, it should be noted that in order to accurately obtain the length of the radiofrequency ablation catheter 1000 inserted into the human blood vessel or the length withdrawn from the human blood vessel, the radiofrequency ablation catheter 1000 further includes a displacement detection unit 500. The displacement detection unit 500 is arranged on the tube body 100, and the displacement detection unit 500 is used to detect the axial movement distance of the tube body 100.

[0079] Specifically, the displacement sensing unit includes an installation housing 510 and a displacement sensor 520. The displacement sensor 520 is fixed in the installation housing 510. For example, the displacement sensor 520 can be a grating sensor. The tube body 100 of the radiofrequency ablation catheter 1000 is slidably arranged in the installation housing 510. For example, the installation housing 510 is provided with a through hole to facilitate the tube body 100 of the radiofrequency ablation catheter 1000 to pass through the installation housing 510.

[0080] The displacement sensor 520 is electrically connected to the control module 11. The control module 11 can transmit the displacement information of the tube body 100 obtained by the displacement sensor 520 to the display 13, so that the operator can intuitively obtain the length of the radiofrequency ablation catheter 1000 inserted into the human blood vessel or the length withdrawn from the human blood vessel.

[0081]

[0082] In addition, it should be noted that when the tube wall sensor 400 is a pressure sensor, by combining the value feedback by the displacement sensor 520, the cross-sectional shape of the blood vessel at the corresponding position can be obtained, and through continuous position information, the shape of the blood vessel through which the radiofrequency ablation catheter 1000 passes can be obtained.

[0083] Specifically, when the distance between the inner wall of the blood vessel and the tube wall sensor 400 is different, the blood flow velocity will also change. For example, the smaller the distance between the inner wall of the blood vessel and the tube wall sensor 400, the faster the blood flow velocity at this time, and the smaller the pressure value obtained by the tube wall sensor 400. The larger the distance between the inner wall of the blood vessel and the tube wall sensor 400, the slower the blood flow velocity at this time, and the larger the pressure value obtained by the tube wall sensor 400.

[0084] At the same time, the tube wall sensors 400 are spirally distributed on the tube body 100. Therefore, based on the multiple tube wall sensors 400 distributed on the tube body 100, the shape of the blood vessel can be known. At the same time, the displacement sensor 520 can record the position of the radiofrequency ablation catheter 1000 at this time, that is, the position of the tube wall sensor 400. Therefore, the shape of the specific position of the blood vessel can be obtained. By continuously recording the shape of the blood vessel in the case of different positions of the radiofrequency ablation catheter 1000, the shape of the blood vessel through which the radiofrequency ablation catheter 1000 passes can be obtained, that is, the overall shape of the blood vessel at the intervention position can be judged.

[0085] For the convenience of the operator to observe, both the tube wall sensor 400 and the displacement sensor 520 feedback to the control module 11. After being processed by the control module 11, it is sent to the display 13, and the two-dimensional or three-dimensional shape of the blood vessel can be more intuitively seen on the display 13.

[0086] In summary, the embodiment of the present invention provides a radiofrequency ablation catheter 1000, which includes a tube body 100, a conductor wire 200, and a light source 300. The conductor wire 200 is arranged on the outer wall of the tube body 100, and the light source 300 is arranged on the tube body 100. When performing a radiofrequency ablation catheter 1000 operation, for example, for varicose veins, after powering the light source 300 and making the light source 300 emit light, the light emitted by the light source 300 can pass through the blood vessel and the skin and be observed by the operator's naked eyes to judge the position of the conductor wire 200 on the tube body 100. Then, the conductor wire 200 can be accurately delivered to the lesion position, and a high-frequency current is delivered to the conductor wire 200 through the radiofrequency ablation instrument 10 to achieve the purpose of tissue ablation. That is, the radiofrequency ablation catheter 1000 can accurately deliver the radiofrequency ablation catheter 1000 to the lesion position without the need to rely on external auxiliary observation equipment and achieve the purpose of tissue ablation.

[0087] An embodiment of the present invention further provides a radiofrequency ablation device, which includes a radiofrequency ablation instrument 10 and the above-mentioned radiofrequency ablation catheter 1000. The conductor wire 200 and the light source 300 are both electrically connected to the radiofrequency ablation instrument 10, and this radiofrequency ablation device has all the functions of the radiofrequency ablation catheter 1000.

[0088] As described above, the foregoing are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A radiofrequency ablation catheter, characterized in that, Comprising: A tube body (100); A conductor wire (200), which is arranged on the outer wall of the tube body (100); A light source (300), which is arranged on the tube body (100); A tube wall sensor (400), a tube cavity is defined inside the tube body (100), a sensor mounting hole (101) is provided on the tube body (100), the sensor mounting hole (101) communicates with the tube cavity, and the tube wall sensor (400) is arranged in the sensor mounting hole (101); The tube wall sensor (400) is a pressure sensor; The number of the tube wall sensors (400) and the number of the sensor mounting holes (101) are both multiple, and each sensor mounting hole (101) is provided with one tube wall sensor (400); The conductor wire (200) is spirally wound around a part of the outer wall of the tube body (100), and the tube wall sensors (400) are spirally and spacedly distributed on the tube body (100). Among them, the conductor wire (200) includes a plurality of wire segments (210) connected end to end in sequence along the axis direction of the tube body (100), and a plurality of the tube wall sensors (400) are exposed between adjacent wire segments (210); A displacement detection unit (500), which is arranged on the tube body (100), and the displacement detection unit (500) is used to detect the axial movement distance of the tube body (100); Among them, the tube wall sensors (400) are spirally distributed on the tube body (100). According to the multiple tube wall sensors (400) distributed on the tube body (100), the shape of the blood vessel is obtained; at the same time, a displacement sensor (520) records the position of the radiofrequency ablation catheter (1000) at this time, that is, the position of the tube wall sensor (400), and then the shape of the specific position of the blood vessel is obtained. By continuously recording the shapes of the blood vessels in the case of different positions of the radiofrequency ablation catheter (1000), the shape of the blood vessel passed by the radiofrequency ablation catheter (1000) is obtained, that is, the overall shape of the blood vessel at the intervention position is judged.

2. The radiofrequency ablation catheter according to claim 1, wherein The light source (300) includes an annular light source (310) and a light source conductive wire (320). The annular light source (310) is electrically connected to the light source conductive wire (320). 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 tube cavity.

3. The radiofrequency ablation catheter according to claim 1, wherein The radiofrequency ablation catheter further includes a tip (600) and a distal sensor (700). The tip (600) is installed at the distal end port of the tube body (100), a sensor chamber is defined inside the tip (600), and the distal sensor (700) is arranged in the sensor chamber.

4. The radiofrequency ablation catheter according to claim 3, characterized in that, The number of the sensor chambers and the number of the distal sensors (700) are both multiple, and each sensor chamber is provided with one distal sensor (700); Or both the number of the sensor chambers and the number of the distal sensors (700) are one, and the distal sensors (700) are arranged in the sensor chambers.

5. The radiofrequency ablation catheter according to claim 3, wherein The head (600) is provided with a guide wire through hole (601).

6. A radiofrequency ablation device, characterized in that, Comprising a radiofrequency ablation instrument (10) and the radiofrequency ablation catheter according to any one of claims 1-5, wherein the conductor wire (200) is electrically connected to the radiofrequency ablation instrument (10).

7. The radiofrequency ablation device according to claim 6, wherein The radiofrequency ablation instrument (10) includes a control module (11), a radiofrequency module (12) and a display (13), the control module (11) is electrically connected to the radiofrequency module (12) and is electrically connected to the display (13), and the conductor wire (200) is electrically connected to the radiofrequency module (12).

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