CN217660106U - Radiofrequency ablation device - Google Patents

Abstract

The utility model provides a radio frequency ablation equipment includes electrode, sacculus and conveyer pipe, the electrode is the tubulose to be formed with at least one ablating loop, be equipped with at least one ablation district on the ablating loop, it is connected with outside electric connector through the electrode lead wire, the sacculus is located the electrode is inboard, is suitable for to push away the electrode, the conveyer pipe includes the electrode outer tube, sets up the inboard coolant pipe of electrode outer tube and set up in the sacculus pipe in the electrode outer tube outside, the one end of coolant pipe is in extend to in the electrode the pointed end of electrode, the other end links to each other with coolant joint, the sacculus pipe with the sacculus intercommunication, be used for to let in the sacculus coolant. Because this radiofrequency ablation equipment is equipped with the sacculus, it can provide the support for the electrode, strengthens the butt effect of electrode and bronchus inner wall, simultaneously, because the coolant both got into the electrode, got into the sacculus again, can realize dual cooling effect.

Description

Radio frequency ablation device

Technical Field

The utility model relates to a technical field that the tissue was ablated, concretely relates to radio frequency ablation equipment.

Background

Chronic Obstructive Pulmonary Disease (COPD) is a general term for diseases that cause obstruction of the airway or airway airflow, such as in particular chronic bronchitis and/or emphysema. Such diseases are chronic, and airflow obstruction is often permanent or irreversible, and may further progress to common chronic diseases such as pulmonary heart disease and/or respiratory failure.

The treatment of COPD is mainly aimed at alleviating current symptoms, reducing future risks. Traditional treatment measures are characterized in that serious patients need to undergo lung resection operations by controlling living environment and by means of drug treatment, oxygen therapy, ventilation support and the like.

The prevention and control of symptoms by drugs can actually reduce the frequency of acute and serious morbidity, thereby improving exercise endurance and quality of life, but patients need to insist on taking for a long time, and great physical and economic stress is generated to the patients.

With surgical treatment methods such as bullectomy, lung debulking (removal of a portion of lung tissue), bronchoscopic lung debulking, and lung transplantation, although the pain of patients taking medicine for a long time can be alleviated and the economic stress on patients can be reduced, the operation trauma is large, and the patients are subjected to excessive pain during the treatment period.

In a word, the patients are subjected to great pain in the existing treatment methods, such as pain caused by long-time medicine taking and pain caused by large surgical wounds.

The prior art discloses a catheter and an endotracheal interventional therapy system, wherein an electrode is annular, an ablation region is arranged on the electrode, the main material of the electrode is made of a conductive material, and an insulating layer covers the region outside the ablation region. The electrode is restrained in the conveying process, the annular shape is recovered after the electrode reaches the target position and is abutted against the inner wall of the bronchus, and then the electrode is communicated with the radio frequency ablation equipment, and radio frequency energy is provided for the electrode to ablate lesion tissues on the inner wall of the bronchus. The catheter and endotracheal intervention system also comprises a coolant tube, one end of which extends into the electrode and the other end of which is connected with the perfusion device, wherein, in the operation process, coolant enters the electrode from the perfusion device through the coolant tube to cool the electrode.

However, such a catheter and an endotracheal interventional treatment system have the following disadvantages:

1. the electrode is only abutted against the inner wall of the bronchus, the abutting effect is not good, and the ablation effect on the pathological tissue is influenced under the same radio frequency energy;

2. the electrode is cooled only by coolant delivered by a coolant pipe injected into the electrode, and the cooling effect is insufficient, so that the ablation effect is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the not good just not enough defect of cooling effect of electrode and bronchus inner wall butt effect among the prior art to provide a butt is effectual, the abundant radio frequency ablation equipment of cooling effect.

In order to solve the technical problem, an embodiment of the present invention provides a radio frequency ablation apparatus, which includes an electrode in a tubular shape and formed with at least one ablation ring, wherein the ablation ring is provided with at least one ablation region, and the electrode is connected with an external electric connector through an electrode lead; the balloon is positioned inside the electrode and is suitable for pushing against the electrode; the delivery pipe comprises an electrode outer pipe, a coolant pipe arranged on the inner side of the electrode outer pipe and a balloon catheter arranged on the outer side of the electrode outer pipe, one end of the coolant pipe extends to the tip end of the electrode in the electrode, the other end of the coolant pipe is connected with a coolant connector, and the balloon catheter is communicated with the balloon and used for introducing coolant into the balloon.

Optionally, a sensor is disposed on the electrode, and the sensor is connected to the electrical connector through a sensor lead.

Optionally, the electrode lead and the sensor lead are both located between the electrode outer tube and the coolant tube.

Optionally, the balloon catheter extends from one end of the balloon into the interior of the balloon and extends to the other end of the balloon.

Optionally, the surface of the balloon is provided with a plurality of micropores at least at the region corresponding to the electrodes.

Optionally, the balloon catheter comprises a delivery lumen adapted to inject a coolant into the balloon and a recovery lumen adapted to provide a return channel for the coolant to flow out of the balloon.

Optionally, the coolant tube comprises an input cavity adapted to input coolant into the electrode and an output cavity adapted to provide a passage for coolant out of the electrode.

Optionally, the surface of the electrode is provided with a plurality of irrigation holes adapted to direct coolant flow towards the inner bronchial wall.

Optionally, a skeleton made of a memory alloy is disposed within the electrode, the skeleton being located within the coolant tube and extending to the tip of the electrode.

Optionally, the electrode is made of a memory alloy.

Optionally, the entire electrode constitutes the ablation zone.

Optionally, the radiofrequency ablation device further comprises a negative plate; the radio frequency equipment is electrically connected with the negative plate and is connected with the electric connector; the filling equipment comprises a filling pump and a filling pipeline, and the filling pipeline is connected with the coolant joint; bronchial endoscope apparatus comprising a bronchial endoscope having a working channel adapted for the passage of said delivery tube, an endoscopic visualization device and suction means.

The utility model discloses technical scheme has following advantage:

1. the embodiment of the utility model provides a radio frequency ablation equipment, owing to be equipped with the sacculus, it can provide the support for the electrode, strengthens the butt effect of electrode and bronchus inner wall, simultaneously, because the coolant both got into the electrode, got into the sacculus again, can realize dual cooling effect.

2. The embodiment of the utility model provides a radio frequency ablation equipment, its electrode surface are equipped with fills the hole, and the coolant can be via filling the hole flow direction bronchus inner wall, cools off it, and multiplicable ablation degree of depth.

3. The embodiment of the utility model provides a radio frequency ablation equipment, sacculus pipe extend to the other end of sacculus from the one end of sacculus, and it can provide the support for the sacculus to after coolant gets into the sacculus, the sacculus tenesmus warp, influences the supporting effect to the electrode.

4. The embodiment of the utility model provides a radio frequency ablation equipment is equipped with the skeleton in its electrode, and it is made by memory alloy, and the skeleton is located the coolant pipe and extends to the most advanced of electrode, can provide the support for the electrode, further improves the butt dynamics of electrode and bronchus inner wall.

5. The embodiment of the utility model provides a radio frequency ablation equipment, its sensor is located on the electrode for the sensor is located between tracheal inner wall and the electrode, and the security and the accuracy of operation are melted in the temperature variation of monitoring electrode that can be accurate fast and bronchus inner wall, simultaneously, because the sensor is located between electrode and the tracheal inner wall, can accurately monitor the pressure variation between the two, and then can monitor whether good butt between the two.

6. The embodiment of the utility model provides a radio frequency ablation equipment, its sensor lead wire and electrode lead wire all are located between electrode outer tube and the coolant pipe, so design, can avoid in the use, sensor lead wire and electrode lead wire are because of being dragged for sensor lead wire and sensor contact failure and/or electrode lead wire and electrode contact failure influence operation effect, simultaneously, can make the outward appearance of conveyer pipe clean and tidy, easily accomodate, regular.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a radiofrequency ablation device according to an embodiment of the present invention;

fig. 2 is a schematic partial structural view of a radiofrequency ablation device according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating the cooperation between the balloon and the electrode in the rf ablation device according to the embodiment of the present invention;

fig. 4 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A delivery tube atbase:Sub>A-base:Sub>A position inbase:Sub>A radiofrequency ablation device according to an embodiment of the present invention;

fig. 5 is a schematic view of an electrode in an embodiment of the present invention;

FIG. 6 is a schematic view of another embodiment of an electrode according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of an electrode at position B-B with the skeleton positioned between the electrode and coolant tube in an embodiment of the invention;

FIG. 8 is a schematic cross-sectional view of an electrode in a B-B position with the skeleton positioned within the coolant tube in an embodiment of the invention;

FIG. 9 is a schematic cross-sectional view of an electrode at position B-B when the frame is located in the added return pipe in an embodiment of the present invention;

fig. 10 is a schematic cross-sectional view of an electrode at position B-B with no backbone and coolant tube self-chambered in an embodiment of the invention.

Description of reference numerals:

1. an electrode; 10. a perfusion hole; 11. an ablation zone; 12. a balloon; 13. the inner wall of the bronchus; 14. a tip; 120. micropores; 2. a bronchoscope; 20. an endoscopic visualization device; 21. a suction device; 3. a sensor; 4. a delivery pipe; 40. a main pipe; 41. an electrode outer tube; 42. a balloon catheter; 43. a coolant pipe; 44. an electrode lead; 45. a sensor lead; 46. a framework; 5. a handle; 50. a balloon joint; 51. an electrical connector; 52. an input cavity joint; 53. an output cavity joint; 6. a perfusion pump; 60. a first docking pipe; 61. a second pair of adapter tubes; 62. a third butt joint pipe; 7. a radio frequency device; 8. a negative plate; 9. a pressure pump.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 10, the present embodiment provides a radio frequency ablation apparatus for ablating diseased tissue in a human body, and particularly, in the present embodiment, for ablating tissue on a diseased bronchial inner wall 13.

The radiofrequency ablation equipment comprises an electrode 1, a balloon 12 for supporting the electrode 1, a sensor 3 arranged on the electrode 1, a delivery pipe 4, a handle 5 connected with the delivery pipe 4, a perfusion pump 6, radiofrequency equipment 7, a negative plate 8 and a pressure pump 9.

The electrode 1 is tubular, and the whole body is made of conductive material, specifically, a memory alloy tube, such as a nickel-titanium alloy tube, but other alloy tubes with shape memory function can be used. As shown in fig. 5, the electrode 1 is bent to form an ablating loop having four ablating regions 11. Because the electrode 1 is made of a memory alloy tube, when the electrode 1 reaches a target position, the electrode 1 can be automatically unfolded and abutted against the inner wall 13 of the bronchus so as to ablate lesion tissues on the inner wall 13 of the bronchus. Of course, the electrode 1 may also perform rf ablation on other tissues of the human body, and is not limited herein. Of course, two or three ablation zones 11, or even more, can be provided on the ablating loop. The arrangement of the ablation zones 11 can realize ablation of multiple zones by one ablation operation, thereby improving the ablation efficiency. In addition, since the electrode 1 is made of a conductive material, the ablation region 11 is a part of the electrode 1 itself, and there is no risk that the ablation region 11 will fall off the electrode 1. The electrode 1 is covered with an insulating layer in the region outside the ablation region 11, and can be formed in a spraying and dip-coating mode, or can be arranged in a bonding and sleeving mode. The insulating layer can prevent the leakage or dispersion of radio frequency energy and can also prevent other non-pathological tissues from being damaged.

In other embodiments, the main body of the electrode 1 may be made of resilient rubber or plastic, and then the surface of the main body of the electrode 1 is partially or completely coated with conductive material to form one, two or more ablation regions 11.

In other embodiments, the electrode 1 may also be bent to form two, three, or even more ablating loops, so that the electrode 1 is in a spiral shape, and is specifically disposed according to needs, which is not limited herein.

As shown in fig. 6, in another embodiment of the electrode 1, the entire electrode 1 forms the ablation region 11, which is in a ring shape and can form a ring ablation on the inner wall of the bronchus, so that, on one hand, no insulating material is required to be arranged on the electrode 1, and thus the manufacturing process of the electrode 1 can be simplified, on the other hand, only one electrode lead wire is required to be connected with an external electrical connector for the electrode 1, the control is simple, and furthermore, for the tubular bronchus, the ring-shaped ablation region 11 is adapted to the shape of the tubular bronchus, so that lesion tissues of the same trachea section can be ablated for one time and one whole circle, and the ablation efficiency is improved, and compared with the design that a plurality of ablation regions 11 are arranged, the ring-shaped ablation region 11 formed by the entire electrode 1 can be prevented from being ablated due to the failure of one ablation region 11 of the plurality of ablation regions 11, and the lesion tissues on the bronchus corresponding to the failed ablation region 11 can not be ablated.

The surface of the electrode 1 is provided with a plurality of infusion holes 10, the infusion holes 10 being formed by laser cutting, although other conventional means may be used. The perfusion holes 10 are distributed on the surface of the electrode 1, and the coolant can flow to the inner wall 13 of the bronchus through the perfusion holes 10, so as to achieve the purpose of cooling the electrode 1 and the inner wall 13 of the bronchus, and increase the ablation depth. The coolant may be cooling water, or other fluid with a relatively low temperature.

The balloon 12 is in a deflated state when in the non-operative state and in an inflated state when in the operative state, and in this embodiment, the balloon 12 is inflated by the injection of a coolant. When the saccule 12 is in an inflated state, the diameter of the position where the saccule 12 abuts against the electrode 1 is larger than that of the position where the saccule 12 abuts against the electrode 1, so that the saccule 12 can abut against the electrode 1 to push the electrode 1 to the inner wall 13 of the bronchus, and the abutting effect of the electrode 1 and the inner wall 13 of the bronchus is further enhanced. The balloon 12 may be cylindrical, spherical, gourd-shaped or other shape, the part supporting the electrode 1 is adapted to the inner shape of the electrode 1, and the material of the balloon 12 is preferably a material with good compliance such as TPU.

The sensor 3 is arranged on the electrode 1, and in the embodiment, the sensor 3 is an integrated sensor which can monitor temperature and pressure. Of course, the sensor 3 may be a temperature sensor and a pressure sensor which are independently arranged and are both arranged on the electrode 1. In the use, sensor 3 is pressed from both sides between electrode 1 and bronchus inner wall 13, both can monitor electrode 1's temperature, can monitor bronchus inner wall 13's temperature again, can also monitor the pressure between electrode 1 and the bronchus inner wall 13, so, the butt effect between the two of judgement that can be better.

As shown in fig. 3, 4 and 7, the delivery tube 4 connects the electrodes 1, balloon 12 and sensors 3 to an external device. The delivery tube 4 includes a main tube 40, which has an outer electrode tube 41 and a balloon catheter 42, and in fig. 4, the balloon catheter 42 is located above the outer electrode tube 41, and the balloon catheter 42 extends out of the delivery tube 4 and into the balloon 12, and extends from one end to the other end of the balloon 12, and has a small hole (not shown) at its distal end to communicate with the balloon 12. The coolant enters the balloon catheter 42 and then enters the balloon 12 through the small holes, which reduces the impact of the coolant on the balloon 12. Meanwhile, the balloon catheter 42 extends from one end to the other end of the balloon 12 to provide support for the balloon 12, so that the balloon 12 is prevented from dropping and deforming after coolant enters the balloon 12, and the support effect on the electrode 1 is not affected.

As shown in fig. 4, a coolant pipe 43 and a skeleton 46, both of which are located inside the electrode outer tube 41, are further provided inside the delivery pipe 4. The coolant pipe 43 extends to the tip 14 of the electrode 1, and conveys the coolant into the electrode 1 to cool the electrode 1, and meanwhile, the coolant can flow to the inner wall 13 of the bronchus through the filling hole 10 on the electrode 1, so as to cool the inner wall 13 of the bronchus, and achieve the purpose of dual cooling of the electrode 1 and the inner wall 13 of the bronchus, and in addition, the coolant flows out through the filling hole 10 and flows to the electrode 1, so that the inner side and the outer side of the electrode 1 are cooled, the cooling efficiency can be improved, and further the ablation depth can be increased. The frame 46 is made of memory alloy and has a shape memory function, but may be made of a spring metal tube or a plastic tube with a conductive coating, and the like, and is located between the electrode outer tube 41 and the coolant tube 43 and extends into the tip 14 of the electrode 1 to provide support for the electrode 1, so as to improve the strength of the electrode 1 and further enhance the abutting effect of the electrode 1 and the inner wall 13 of the bronchus. Of course, the skeleton 46 may be disposed at other positions in the outer tube 41 of the electrode, as shown in fig. 8, which is a schematic sectional view of the electrode 1 at the position B-B, and it can be seen that the skeleton 46 is disposed in the coolant tube 43.

As shown in fig. 9, another embodiment of a coolant tube 43 is shown, which consists of two tubes, thereby forming an inlet chamber 430a and an outlet chamber 430b for coolant, which enters the electrode 1 via the inlet chamber 430a, and the outlet chamber 430b provides a passage for coolant to flow out of the electrode 1.

As shown in fig. 10, another embodiment of the coolant tubes 43 is provided in which the coolant tubes 43 are in the form of single tubes, but are divided by a partition plate into an inlet chamber 430a and an outlet chamber 430b. Further, as shown in fig. 10, since the electrode 1 is made of a memory alloy tube, the electrode 1 is not supported by the frame 46, and the electrode 1 can be brought into good contact with the inner wall 13 of the bronchus.

As shown in fig. 4, an electrode lead 44 and a sensor lead 45 are arranged between the electrode outer tube 41 and the coolant tube 43, so that the thin electrode lead 44 and the thin sensor lead 45 can be prevented from being dragged during use, and the electrode lead 44 and the sensor lead 45 are prevented from being in poor contact with the electrode 1 and/or the sensor lead 45 and the sensor 3. One end of the electrode lead 44 is connected to the tail end of the electrode 1, and the tail end of the electrode 1 enters the inner side of the electrode outer tube 41, so that the electrode 1 can be stabilized well. The electrode 1 is tubular and a sensor lead 45 extends into the interior of the electrode 1 and is connected to a sensor 3 provided on the electrode 1 to transmit detected information.

The handle 5 provides a gripping location for the operator to facilitate the operator pushing and/or rotating the delivery tube 4, electrode 1, and balloon 12 to adjust the ablation site. The handle 5 contains a balloon connector 50, an electrical connector 51, and a coolant connector (not labeled).

The balloon connector 50 is connected to the balloon catheter 42, the electrical connector 51 is connected to the electrode lead 44, and the electrical connector 51 is also connected to the sensor lead 45.

The coolant connection includes an inlet chamber connection 52 and an outlet chamber connection 53. The inlet chamber 430a of the coolant tube 43 is connected to the inlet chamber connection 52, and the outlet chamber 430b of the coolant tube 43 is connected to the outlet chamber connection 53.

The infusion pump 6 is connected to the handle 5 via an infusion line, in particular to the inlet chamber connection 52 via a first connection 60 of the infusion line and to the outlet chamber connection 53 via a second connection 61 of the infusion line.

The radio frequency device 7 is connected to the negative plate 8, and the radio frequency device 7 is electrically connected to the electrical connector 51, so that the electrode 1 is connected to the radio frequency device 7 through the electrode lead 44 and the electrical connector 51, and the sensor 3 is connected to the radio frequency device through the sensor lead 45 and the electrical connector 51.

The pressure pump 9 is connected to the balloon connector 50 through a third docking tube 62. The pressure pump 9 is activated to inject a coolant into the balloon 12 through the balloon catheter 42 and the small hole at the end of the balloon catheter 42 to inflate the balloon 12, and the coolant in the balloon 12 can further cool the electrode 1.

The radiofrequency ablation device further comprises a bronchial endoscope device (not labeled) which comprises a bronchial endoscope 2, an endoscope visual device 20 and a suction device 21, wherein the bronchial endoscope 2 provides a passage for the delivery tube 4 to enter the bronchus, the endoscope visual device 20 provides images to guide the delivery tube 4 and the electrodes 1 and the saccule 12 connected with the delivery tube 4 to a treatment site, and the suction device 21 performs suction treatment on cooling liquid perfused into the bronchus during the operation.

In the present embodiment, it is considered that the coolant is provided with a passage for flowing out of the electrode 1, so that the coolant pipe 43 is provided with an input chamber 430a and an output chamber 430b correspondingly, and the coolant joint (not labeled) on the handle 5 is provided with an output chamber joint 53 communicating with the output chamber 430b in addition to the input chamber joint 52 communicating with the input chamber 430 a. Due to the design, the surface of the electrode 1 can be free of the filling hole 10, so that the coolant does not enter the human body, and the phenomenon that the nerve of airway tissues is stimulated to cause discomfort of the human body and influence on treatment is avoided. Meanwhile, the operation does not need to extract the coolant, so that the operation time can be shortened.

In other embodiments, the coolant flows directly out of the electrode 1 through the fill hole 10, and the coolant tube 43 may be eliminated from the output chamber 430b.

The surface of the balloon 12 is provided with micropores 120 which are uniformly or non-uniformly distributed around the balloon 12, or only arranged in the area corresponding to the electrode 1. Coolant entering the balloon 12 via the balloon catheter 42 may be expelled via the micropores 120. The micropores 120 provide a channel for the coolant to flow to the inner wall 13 of the bronchus, so as to realize the cooling effect on the inner wall 13 of the bronchus, and thus, the double cooling effect on the electrode 1 and the inner wall 13 of the bronchus can be realized, and further the ablation depth can be increased. And by controlling the total area of the micropores 120, the coolant can be both partially expelled from the micropores 120 of the balloon 12 and partially exit the balloon 12 through the coolant outflow passages provided by the balloon catheter 42. When it is desired to provide a pathway for coolant to exit the balloon 12, the balloon catheter 42 is divided into a delivery lumen (not shown) and a recovery lumen (not shown), respectively.

The following describes a specific procedure of using the rf ablation apparatus provided in the present embodiment:

when in use, the negative plate 8 is arranged on the skin of a patient, the negative plate 8 is connected to the radio frequency device 7, and the bronchoscope 2 is sent to a target part in the trachea through the oral cavity of a human body;

the electrode 1, the balloon 12 and the sensor 3 connected to the delivery tube 4 are delivered to a target site along the working channel of the bronchoscope 2 via the delivery tube 4. During the delivery process, whether the electrode 1 is in place or not is determined through endoscopic images, meanwhile, during the delivery process, the electrode 1 is restrained by the inner wall of the working cavity and is in a contraction state, and the balloon 12 is also in the contraction state so as to pass through the working cavity. After the electrode 1 reaches the target position and extends out of the bronchoscope 2, the electrode 1 is unfolded into a ring shape, and of course, when the electrode 1 has a plurality of ablating rings, the electrode 1 is unfolded into a spiral shape. The unfolded electrode 1 is attached to the inner wall 13 of the bronchus;

connecting the balloon joint 50 on the handle 5 with the pressure pump 9 through a third butt joint pipe 62, connecting the electric connector 51 on the handle 5 with the radio frequency device 7, connecting the input cavity joint 52 with the perfusion pump 6 through a first butt joint pipe 60, and connecting the output cavity joint 53 with the perfusion device through a second butt joint pipe 61;

starting the pressure pump 9, injecting coolant into the balloon 12 through the third butt joint pipe 62, the balloon catheter 42 and the small hole arranged at the tail end of the balloon catheter 42, so that the balloon 12 is expanded, and the electrode 1 is further forced to be attached to the inner wall 13 of the bronchus more tightly;

starting the radio frequency device 7, forming a complete radio frequency loop between the electrode 1, the inner wall 13 of the bronchus, the human body, the negative plate 8 and the radio frequency device 7, wherein radio frequency current enters the inner wall 13 of the bronchus through the electrode 1, positive ions and negative ions in cells on the inner wall move rapidly due to rapid change of an electromagnetic field, and then the positive ions and the negative ions in the cells on the inner wall and the negative ions rub against each other and other molecules and ions in adjacent cells, so that the temperature of a diseased region is rapidly increased, water inside and outside the cells is evaporated, dried, shrunk and falls off, the purpose of treatment is achieved, heat is transferred to the electrode 1, and the electrode 1 also becomes hot;

when the radiofrequency device 7 is activated, and the perfusion device 6 is simultaneously activated, the coolant enters the interior of the electrode 1 via the first adapter 60, the input cavity connector 52 and the input cavity 430a and flows out from the portion of the perfusion hole 10 on the surface of the electrode 1 to cool the electrode 1 and the tissues on the inner bronchial wall 13. Part of the coolant flows out of the electrode 1 via the outlet chamber 430b, the outlet chamber connection 53, the second connecting piece 61 back to the perfusion apparatus 6.

In the working process, the sensor 3 is arranged on the electrode 1 and clamped between the electrode 1 and the tissue of the inner bronchial wall 13, so that the temperature of the tissue on the electrode 1 and the tissue of the inner bronchial wall 13 can be rapidly monitored, the purposes of safe operation and accurate treatment can be guaranteed, meanwhile, the pressure between the electrode 1 and the tissue of the inner bronchial wall 13 can be monitored, and whether the contact between the electrode 1 and the tissue of the inner bronchial wall 13 is good or not can be judged, so that the ablation effect can be guaranteed.

In the operation process, the thermal ablation treatment of lesion tissues with different degrees on the inner wall 13 of the bronchus can be realized by adjusting the parameters of the ablation radio frequency.

By rotating the handle 5, the lesion tissues at different parts of the same section of the inner wall 13 of the bronchus can be ablated.

By pushing the handle 5, the lesion tissues of different sections of the inner wall 13 of the bronchus can be ablated.

When nerve ablation treatment needs to be carried out on the left trachea and the right trachea respectively, or when a plurality of groups of separated control electrodes are used, the conveying pipe 4 can be marked, and therefore the position of the conveying pipe 4 can be judged through medical imaging technologies such as X-ray, doppler ultrasound and the like.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (11)

1. A radio frequency ablation device, comprising:

the ablation electrode comprises an electrode (1) and a plurality of ablation rings, wherein the electrode (1) is tubular and is provided with at least one ablation zone (11), and the electrode (1) is connected with an external electric connector (51) through an electrode lead (44);

a balloon (12) inside the electrode (1) adapted to push against the electrode (1);

the delivery pipe (4) comprises an electrode outer pipe (41), a coolant pipe (43) arranged on the inner side of the electrode outer pipe (41), and a balloon catheter (42) arranged on the outer side of the electrode outer pipe (41), one end of the coolant pipe (43) extends to the tip (14) of the electrode (1) in the electrode (1), the other end of the coolant pipe is connected with a coolant joint, and the balloon catheter (42) is communicated with the balloon (12) and used for introducing coolant into the balloon (12).

2. The radiofrequency ablation device of claim 1, wherein: the electrode (1) is provided with a sensor (3), and the sensor (3) is connected with the electric connector (51) through a sensor lead (45).

3. The radiofrequency ablation device of claim 2, wherein: the electrode lead (44) and the sensor lead (45) are both located between the electrode outer tube (41) and the coolant tube (43).

4. The radiofrequency ablation device of claim 1, wherein: the balloon catheter (42) extends from one end of the balloon (12) into the interior of the balloon (12) and to the other end of the balloon (12).

5. The radiofrequency ablation device of claim 1, wherein: the surface of the balloon (12) is provided with a plurality of micropores (120) at least at the area corresponding to the electrode (1).

6. The radiofrequency ablation device of claim 1, wherein: the coolant tube (43) includes an input cavity (430 a) and an output cavity (430 b), the input cavity (430 a) being adapted to input coolant into the electrode (1), and the output cavity (430 b) being adapted to provide a passage for coolant out of the electrode (1).

7. The radiofrequency ablation device of claim 1, wherein: the surface of the electrode (1) is provided with a plurality of perfusion holes (10) adapted to direct a coolant flow towards the inner bronchial wall (13).

8. The radiofrequency ablation device of claim 1, wherein: a skeleton (46) made of a memory alloy is arranged in the electrode (1), and the skeleton (46) is located in the coolant pipe (43) and extends to the tip (14) of the electrode (1).

9. The radiofrequency ablation device of claim 1, wherein: the electrode (1) is made of a memory alloy.

10. The radiofrequency ablation device of claim 1, wherein: the entire electrode (1) forms the ablation zone (11).

11. The radiofrequency ablation device of any one of claims 1-10, wherein: further comprising:

a negative plate (8);

a radio frequency device (7) electrically connected to the negative plate (8) and to the electrical connector (51);

the filling equipment comprises a filling pump (6) and a filling pipeline, and the filling pipeline is connected with the coolant joint;

bronchial endoscopic apparatus comprising a bronchial endoscope (2), an endoscopic visualization device (20) and suction means (21), said bronchial endoscope (2) having a working channel adapted for the passage of said delivery tube (4).

Images