A radiofrequency and chemical ablation device

Abstract

The present invention discloses a radio frequency and chemical integrated ablation device, including a transmission catheter, a proximal interface for connecting a radio frequency ablation controller and / or a chemical ablation injector is arranged at the proximal end of the transmission catheter, a radio frequency ablation electrode for radio frequency ablation and an injection head for chemical ablation are arranged at the distal end of the transmission catheter, an electrical connector for connecting the radio frequency ablation controller and the radio frequency ablation electrode is arranged in the transmission catheter, and a hollow tube for connecting the chemical ablation injector and the injection head is also arranged, and the transmission catheter and the hollow tube are integrated. Through the integrated ablation device, radio frequency ablation and chemical ablation can be performed simultaneously, and radio frequency ablation and chemical ablation can also be performed in time. During the ablation process, cooling, disinfection and other treatments can also be performed, which is conducive to improving and enhancing the ablation effect, and can also reduce costs and treatment risks.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a radio frequency and chemical integrated ablation device. Background Art

[0002] Radiofrequency ablation is an interventional technique that inserts a radiofrequency ablation catheter into a specific part through a blood vessel, and releases radiofrequency current to cause coagulative necrosis of local nerves and tissues in a specific part, so as to block the conduction bundle or the origin point. Since radiofrequency current has the advantages of small damage range and no harm to the body, it has been widely used in the treatment of arrhythmia, hypertension, diabetes and cancer tumors.

[0003] Under existing technical conditions, the treatment effect of single radiofrequency ablation is not ideal for some complex lesions, and often requires further treatment through chemical ablation. However, under current conditions, these two ablation treatment processes need to be carried out separately, and they need to enter the human blood vessels through catheters and reach the lesions. Obviously, this method not only brings pain to patients in treatment, but also increases the cost and risk of treatment. Therefore, it is necessary to carry out research on the integration of radiofrequency ablation and chemical ablation. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a radiofrequency and chemical integrated ablation device, which solves the problem that the prior art lacks integrated equipment and radiofrequency ablation and chemical ablation can only be performed separately.

[0005] In order to solve the above-mentioned technical problems, a technical solution adopted by the present invention is to provide a radio frequency and chemical integrated ablation device, including a transmission catheter, a proximal interface for connecting a radio frequency ablation controller and / or a chemical ablation injector is arranged at the proximal end of the transmission catheter, a radio frequency ablation electrode for radio frequency ablation and an injection head for chemical ablation are arranged at the distal end of the transmission catheter, an electrical connector connecting the radio frequency ablation controller and the radio frequency ablation electrode is arranged in the transmission catheter, and a hollow tube connecting the chemical ablation injector and the injection head is also arranged, and the transmission catheter and the hollow tube are integrated.

[0006] Preferably, the hollow tube is arranged outside the transmission conduit, the outer layer of the transmission conduit is a covering layer, the electrical connector is sealed inside the covering layer, and the surface of the covering layer is also integrated with the outer surface of the hollow tube, thereby forming a double-pipe structure in which the outer surface of the transmission conduit and the outer surface of the hollow tube are integrated into one.

[0007] Preferably, the proximal interface includes a radiofrequency ablation proximal interface for connecting to the transmission catheter, and a chemical ablation proximal interface for sealingly connecting to the hollow tube.

[0008] Preferably, the hollow tube is arranged inside the transmission conduit, the outer layer of the transmission conduit is a coating layer, the center of the hollow tube is sleeved inside the coating layer, an isolation layer is arranged between the coating layer and the hollow tube, and the electrical connector is arranged in the isolation layer, thereby forming an integrated structure in which the hollow tube and the electrical connector are sleeved inside the transmission conduit.

[0009] Preferably, a medical fluid flow tube is further provided in the isolation layer, and the medical fluid flow tube extends all the way to the radio frequency ablation electrode. The radio frequency ablation electrode is provided with a flow guide hole and is in communication with the medical fluid flow tube.

[0010] Preferably, at least two cooling liquid flow pipes are provided in the isolation layer, and the cooling liquid flow pipes extend all the way to the radio frequency ablation electrode. A cooling pipe network is provided inside or on the inner side of the radio frequency ablation electrode, and the two ends of the cooling pipe network are respectively connected to the two cooling liquid flow pipes, thereby forming a cooling circuit through the two cooling liquid flow pipes and the cooling pipe network, and the radio frequency ablation electrode is cooled by injecting cooling liquid into the cooling circuit.

[0011] Preferably, the RF ablation electrode is a hollow cylinder, one end of which is tightly combined with the transmission catheter, and the other end is an arc-shaped structure with an injection hole opened in the center of the arc; the injection head is arranged inside the RF ablation electrode, and an expansion body is also arranged inside the injection head, and the expansion body can push the needle of the injection head to expose the injection hole after being inflated.

[0012] Preferably, the proximal interface includes a medical liquid input port, which is sealed and connected to the medical liquid flow tube in the isolation layer, and the radiofrequency ablation controller includes a medical liquid input body, which is inserted and sealed and connected to the medical liquid input port.

[0013] Preferably, the proximal interface includes a cooling liquid input port and a cooling liquid output port, which are respectively sealed and connected with the two liquid flow tubes in the isolation layer, and the radiofrequency ablation controller includes a cooling liquid input body and a cooling liquid output body, which are respectively sealed and inserted into the cooling liquid input port and the cooling liquid output port.

[0014] Preferably, the proximal interface includes a chemical injection port and a gas injection port, and a chemical pipeline and a gas pipeline are arranged in the hollow tube. The chemical injection port is tightly connected to the chemical pipeline, and the chemical ablation syringe correspondingly includes a chemical injection body, which is inserted into the chemical injection port to inject chemotherapeutic drugs into the chemical pipeline and even the injection head at the distal end; the gas injection port is tightly connected to the gas pipeline, and the gas pipeline is also connected to the expansion body. The chemical ablation syringe correspondingly includes a gas injection body, which is inserted into the gas injection port to inject gas into the gas pipeline and even the expansion body at the distal end.

[0015] The beneficial effects of the present invention are as follows: the present invention discloses a radio frequency and chemical integrated ablation device, including a transmission catheter, a proximal interface for connecting a radio frequency ablation controller and / or a chemical ablation injector is provided at the proximal end of the transmission catheter, a radio frequency ablation electrode for radio frequency ablation and an injection head for chemical ablation are provided at the distal end of the transmission catheter, an electrical connector for connecting the radio frequency ablation controller and the radio frequency ablation electrode is provided in the transmission catheter, and a hollow tube for connecting the chemical ablation injector and the injection head is also provided, and the transmission catheter and the hollow tube are integrated. Through the integrated ablation device, radio frequency ablation and chemical ablation can be performed simultaneously, or radio frequency ablation and chemical ablation can be performed in time, and cooling, disinfection and other treatments can be performed during the ablation process, which is conducive to improving and enhancing the ablation effect, and can also reduce costs and treatment risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the transmission catheter and the hollow tube according to an embodiment of the radio frequency and chemical integrated ablation device of the present invention;

[0017] Figure 2 It is a schematic diagram of the composition of a radio frequency ablation controller according to an embodiment of a radio frequency and chemical integrated ablation device of the present invention;

[0018] Figure 3 It is a schematic diagram of the composition of a chemical ablation controller according to an embodiment of a radio frequency and chemical integrated ablation device of the present invention.

[0019] Figure 4 is a cross-sectional schematic diagram of a transmission catheter and a hollow tube according to an embodiment of a radio frequency and chemical integrated ablation device of the present invention;

[0020] Figure 5 is a cross-sectional view of a needle retracted in an injection head according to an embodiment of a radio frequency and chemical integrated ablation device of the present invention;

[0021] Figure 6 is a cross-sectional view of a needle extending out of an injection head according to an embodiment of a radio frequency and chemical integrated ablation device of the present invention;

[0022] Figure 7 is a cross-sectional schematic diagram of an expansion body according to an embodiment of a radio frequency and chemical integrated ablation device of the present invention;

[0023] Figure 8 2 is a schematic diagram of a proximal interface of an embodiment of a radio frequency and chemical integrated ablation device according to the present invention;

[0024] Fig. 9 It is a schematic diagram of the transmission catheter and the hollow tube of another embodiment of the radio frequency and chemical integrated ablation device according to the present invention;

[0025] Fig.10 is a cross-sectional schematic diagram of a transmission catheter and a hollow tube according to another embodiment of the radio frequency and chemical integrated ablation device of the present invention;

[0026] Fig.11 is a cross-sectional view of a radio frequency ablation electrode according to another embodiment of the radio frequency and chemical integrated ablation device of the present invention;

[0027] Fig.12 is a cross-sectional schematic diagram of a radio frequency ablation electrode according to another embodiment of the radio frequency and chemical integrated ablation device of the present invention;

[0028] Fig.13 is a schematic diagram of a proximal interface of another embodiment of a radio frequency and chemical integrated ablation device according to the present invention;

[0029] Fig.14 It is a schematic diagram of the composition of a radio frequency ablation controller according to another embodiment of the radio frequency and chemical integrated ablation device of the present invention. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0031] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0032] like Figures 1 to 3 As shown, the radio frequency and chemical integrated ablation device includes a transmission catheter 1, at the proximal end of which is provided a proximal interface 4 for connecting a radio frequency ablation controller 2 and / or a chemical ablation injector 3, and at the distal end of which is provided a radio frequency ablation electrode 5 for radio frequency ablation and an injection head 6 for chemical ablation.

[0033] Combination Figure 4 , Figure 4 Schematic diagram of the cross section of the transmission catheter 1 and the hollow tube 8. The transmission catheter 1 includes an electrical connector 7 connecting the radiofrequency ablation controller 2 and the radiofrequency ablation electrode 5. It also includes a hollow tube 8 connecting the chemical ablation injector 3 and the injection head 6. The transmission catheter 1 and the hollow tube 8 are integrated.

[0034] exist Figure 4 In the figure, the hollow tube 8 is arranged outside the transmission conduit 1, the outer layer of the transmission conduit 1 is the coating layer 101, the electrical connector 7 is sealed inside the coating layer 101, and the surface of the coating layer 101 is also combined with the outer surface of the hollow tube 8 as a whole, thereby forming a double-pipe structure in which the outer surface of the transmission conduit 1 and the outer surface of the hollow tube 8 are combined as a whole.

[0035] Inside the coating 101, the electrical connector 7 includes two independent connection cables, namely a positive connection cable 71 and a negative connection cable 72. The two connection cables are respectively connected to the positive and negative terminals of the radiofrequency ablation electrode 5. The outer layer of at least one of the two connection cables is wrapped with an insulating layer 9 to prevent the two connection cables from directly contacting each other inside the coating 101 and causing a short circuit.

[0036] Further preferably, a curved hard elastic metal strip 10 is provided inside the coating layer 101 and extends along the axial direction of the transmission conduit 1 , thereby improving the toughness and rigidity of the entire transmission conduit 1 and enhancing the bending resistance.

[0037] Preferably, an expansion body is further provided in the injection head, and the expansion body is tightly connected to the hollow tube. When no gas is injected into the expansion body through the hollow tube, the expansion body is in a contracted state and does not contact the outer surface of the radiofrequency ablation electrode. In this way, the heat generated when the radiofrequency ablation electrode performs radiofrequency ablation does not affect the expansion body. Preferably, after gas is injected into the expansion body, the expansion body expands and extends forward to expose the injection head at the front end.

[0038] Specific, combined Figure 5 and Figure 6 . Figure 5 This is a cross-sectional view of the needle retracted in the injection head. Figure 6 It is a cross-sectional view of the needle extending out of the injection head. The hollow tube 8 is tightly connected to the injection head 6. A chemical pipeline 81 and a gas pipeline 82 are arranged in the hollow tube 8. An expansion body 62 is also arranged in the injection head 6. When no gas is injected into the expansion body 62 through the gas pipeline 82, the expansion body 62 is in a contracted state and does not contact the outer surface of the radio frequency ablation electrode 5. In this way, the heat generated when the radio frequency ablation electrode 5 performs radio frequency ablation does not affect the expansion body 62. Preferably, after the gas is injected into the expansion body 62, the expansion body 62 expands and extends forward and pushes the needle 61 out of the circular hole 66 of the injection head 6.

[0039] It can be seen that the expansion body 62 is fixed by a fixing frame 64, and the cross section of the fixing frame 64 is concave, including a bottom wall and a side wall. The end of the expansion body 62 away from the needle 61 is fixed to the bottom wall of the fixing frame 64, and the end close to the needle 61 is connected to the moving plate 63. The moving plate 63 is provided with protrusions 631 on the upper and lower sides, and the side wall of the fixing frame 64 is correspondingly provided with a slide groove 65, and the protrusion 631 is located in the slide groove 65 and can slide in the slide groove 65.

[0040] Preferably, combined Figure 7 The expansion body 62 has a ring-shaped cross section and has a through hole 621 for the chemical pipe 81 to pass through. The chemical pipe 81 also passes through the moving plate 63 and is connected to the needle 61 fixed on the moving plate 63.

[0041] The gas pipeline 82 is connected to the expansion body 62. When the gas pipeline 82 is ventilated to inflate the expansion body 62, the expansion body 62 expands in volume and pushes the moving plate 63 forward, and the needle 61 extends out of the injection head 6. At this time, chemical agents can be injected into the needle 61 through the chemical pipeline 81 for ablation. After chemical ablation, when the gas pipeline 82 is exhausted, the expansion body 62 becomes smaller in volume and pulls the moving plate 63 backward, and the needle 61 shrinks in the injection head 6.

[0042] like Figure 8 As shown, further preferably, the proximal interface 4 includes a radiofrequency ablation proximal interface for connecting to the electrical connector 7 in the transmission catheter 1, and the radiofrequency ablation proximal interface includes a positive electrode interface 41 and a negative electrode interface 42. The radiofrequency ablation proximal interface is used to Figure 2 The chemical ablation proximal interface is electrically connected to the RF ablation controller 2 in the hollow tube 8. The chemical ablation proximal interface includes a chemical pipeline interface 43 and a gas pipeline interface 44, which are connected to the chemical ablation injector 3 through the chemical main interface 33 in FIG. 3. The chemical ablation injector 3 includes a chemical injection body 31 and a gas injection body 32, which are connected to the chemical pipeline interface 43 and the gas pipeline interface 44 respectively.

[0043] It can be seen that the proximal interface of radiofrequency ablation and the proximal interface of chemical ablation are two independent interfaces, which are respectively connected to the radiofrequency ablation controller 2 and the chemical ablation injector 3. In this way, radiofrequency ablation and chemical ablation can be performed independently, such as performing radiofrequency ablation first and then chemical ablation. However, this method of performing ablation independently does not require taking out the integrated channel connecting tube. Instead, radiofrequency ablation is performed first and then chemical ablation, or chemical ablation is performed first and then radiofrequency ablation. The two ablation methods can also be performed simultaneously or synchronously according to the treatment needs, that is, radiofrequency ablation is performed on one side and chemical ablation is performed on the other side, so that the two methods can be implemented synchronously.

[0044] Preferably, as another embodiment of the present invention. Fig. 9 and Fig.10 The hollow tube 8 is arranged inside the transmission conduit 1, the outer layer of the transmission conduit 1 is a coating layer 101, the hollow tube 8 is sleeved inside the coating layer 101, an isolation layer 11 is arranged between the coating layer 101 and the hollow tube 8, and the electrical connector 7 is arranged on the isolation layer 11. Thus, an integrated structure is formed in which the hollow tube 8 and the electrical connector 7 are sleeved inside the transmission conduit 1. The isolation layer 11 here can be filled with soft materials.

[0045] Preferably, the electrical connector 7 includes two independent connection cables, namely a positive connection cable 71 and a negative connection cable 72. The two connection cables are connected to the positive and negative poles of the radiofrequency ablation electrode 5 respectively.

[0046] Preferably, a hard elastic metal strip 10 in the shape of an arc surface is further provided on the isolation layer 11 and extends along the axial direction of the transmission conduit 1 , thereby improving the toughness and rigidity of the entire transmission conduit 1 and enhancing the anti-bending performance.

[0047] Preferably, combined Fig.11 , Fig.11 1 is a cross-sectional view of the radiofrequency ablation electrode 5. A medical fluid flow tube 12 is also provided in the isolation layer 11. The medical fluid flow tube 12 extends all the way to the radiofrequency ablation electrode 5. The radiofrequency ablation electrode 5 is provided with a flow guide hole 51, which is connected to the medical fluid flow tube 12 and is used for injecting physiological saline or other liquid drugs for anti-inflammatory, sterilization and antiviral purposes during radiofrequency ablation. Fig. 9 In the figure, the medical fluid flow tube 12 has two.

[0048] Preferably, combined Fig.12 . Fig.12 Schematic diagram of the cross section of the radiofrequency ablation electrode 5. At least two cooling liquid flow pipes 13 are also arranged in the isolation layer 11, and the cooling liquid flow pipes 13 extend all the way to the radiofrequency ablation electrode 5. A cooling pipe network 52 is arranged inside or on the inner side of the radiofrequency ablation electrode 5, and the two ends (53 and 54) of the cooling pipe network 52 are respectively connected to the two cooling liquid flow pipes 13, thereby forming a cooling circuit through the two cooling liquid flow pipes 13 and the cooling pipe network 52, and the radiofrequency ablation electrode 5 is cooled by injecting cooling liquid into the cooling liquid flow pipe 13.

[0049] Preferably, Fig.11 In the figure, the radiofrequency ablation electrode 5 is a hollow cylinder, one end of which is sealed with the transmission catheter 1, and the other end is an arc-shaped structure, and an injection hole 55 is opened in the center of the arc. The injection head 6 is arranged inside the radiofrequency ablation electrode 5, and an expansion body 62 is also arranged inside the injection head 6. After the expansion body 62 is inflated, it can push the needle 61 of the injection head 6 to expose the injection hole 55.

[0050] Specifically, in Fig.11 In the figure, the front end of the injection head 6 is a planar structure, which is convenient for installation in the radiofrequency ablation electrode 5. The radiofrequency ablation electrode 5 is in the shape of a hollow cylinder, and a cavity 56 for accommodating the chemical ablation injection head 6 is provided inside the radiofrequency ablation electrode 5. The cavity 56 extends from the center of the end of the radiofrequency ablation electrode 5 toward the head of the radiofrequency ablation electrode 5. The head of the radiofrequency ablation electrode 5 is an arc-shaped structure, and an injection hole 55 is provided in the center of the arc, and the injection hole 55 is connected to the cavity 56.

[0051] The chemical ablation injection head 6 is arranged in the cavity 56. A needle 61 for connecting to the chemical pipeline 81 and an expansion body 62 for connecting to the gas pipeline 82 are arranged in the chemical ablation injection head 6. The needle 61 is also connected to the expansion body 62. When no gas is injected into the expansion body 62 through the gas pipeline 82, the expansion body 62 is in a contracted state and does not contact the outer surface of the radio frequency ablation electrode 5. In this way, the heat generated when the radio frequency ablation electrode 5 performs radio frequency ablation does not affect the expansion body 62. After the gas is injected into the expansion body 62 through the gas pipeline 82, the expansion body 62 expands forward and pushes the needle 61 out of the injection hole 55. At this time, the chemical agent can be injected into the needle 61 through the chemical pipeline 81 for ablation. After chemical ablation, when the gas pipeline 82 is exhausted to the outside, the volume of the expansion body 62 becomes smaller and pulls the needle 61 to shrink in the radio frequency ablation electrode 5.

[0052] Preferably, the expansion body 62 pushes the needle 61 through the moving plate 63 to expose the injection hole 55, and the principle is the same as Figure 5 and Figure 6 The consistency expressed will not be repeated here.

[0053] Preferably, Figure 1 In the illustrated embodiment, a flow guide hole 51 and a cooling pipe network 52 are also provided on the radio frequency ablation electrode 5 , and a medical liquid flow pipe 12 and a cooling liquid flow pipe 13 are correspondingly provided in the transmission catheter 1 .

[0054] Preferably, Fig.13 The proximal interface 4 includes two RF electrode terminals, which are respectively electrically connected to two independent connection cables in the isolation layer 11. The two RF electrode terminals are respectively arranged in two RF electrode holes, namely, the RF positive electrode hole 41 and the RF negative electrode hole 42.

[0055] like Fig.14 The radio frequency ablation controller 2 includes two radio frequency electrode columns, namely a radio frequency positive electrode column and a radio frequency negative electrode column, which can be inserted into two radio frequency electrode holes respectively. The two radio frequency electrode columns are arranged on the radio frequency main interface 26 .

[0056] Preferably, the two RF electrode columns and the corresponding RF electrode holes have different cross-sections, thereby preventing mis-insertion. For example, the cross-section of one RF electrode column and the corresponding RF electrode hole is square, and the cross-section of the other RF electrode column and the corresponding RF electrode hole is circular. Preferably, a spring is provided in the RF electrode hole, thereby enabling the RF electrode column to be more tightly electrically connected to the RF electrode end in the RF electrode hole during insertion, thereby ensuring the reliability of the electrical connection.

[0057] When performing radiofrequency ablation, the radiofrequency ablation control body 21 in the radiofrequency ablation controller 2 is electrically connected to the radiofrequency electrode columns in the two radiofrequency electrode holes, and the radiofrequency ablation control body 21 controls power on and off and the current during radiofrequency ablation.

[0058] Preferably, the proximal interface 4 further includes a medical liquid input port 45, which is correspondingly and tightly connected to the medical liquid flow tube 12 in the isolation layer 11. Preferably, the radiofrequency ablation controller 2 correspondingly includes a medical liquid input body 22, which is inserted into the corresponding medical liquid input port 45, thereby injecting medical liquid into the distal radiofrequency ablation electrode 5.

[0059] Preferably, the proximal interface 4 further includes a coolant input port 46 and a coolant output port 47, which are respectively and correspondingly connected to the two liquid flow tubes in the isolation layer 11. The radiofrequency ablation controller 2 correspondingly includes a coolant input body 23 and a coolant output body 24, which are respectively inserted into the corresponding coolant input port 46 and coolant output port 47. In this way, coolant can be continuously injected from the radiofrequency ablation controller 2 to the distal radiofrequency ablation electrode 5, thereby reducing the high temperature generated by the radiofrequency ablation electrode 5 during the ablation process.

[0060] from Fig.13 It can be seen that the proximal interface 4 is stepped, including a first stepped interface 401 and a second stepped interface 402. Among them, the RF positive electrode hole 41 and the RF negative electrode hole 42, the medical liquid input port 45, the coolant input port 46 and the coolant output port 47 are all arranged on the first stepped interface 401, and the first stepped interface 401 is correspondingly connected with the RF main interface 26 of the RF ablation controller 2. The second stepped interface 402 is used to connect with the chemical ablation injector 3.

[0061] Preferably, combined Figure 3 and Fig.13 The proximal interface 4 includes a chemical injection port 43, which is tightly connected to the chemical pipeline 81 of the hollow tube 8. The chemical ablation injector 3 correspondingly includes a chemical injection body 31, which can be inserted into the chemical injection port 43 to inject chemotherapeutic drugs into the chemical pipeline 81 and the distal injection body 6.

[0062] The proximal interface 4 also includes a gas injection port 44, and the chemical ablation injector 3 also includes a gas injection body 32, which can inject gas into the gas pipeline 82 and the distal expansion body 62 after being inserted into the gas injection port 44. The chemical main interface 33 of the chemical ablation injector 3 is connected to the second step interface 402 accordingly.

[0063] It can be seen that the proximal interface here is a common interface, which can be connected to the radiofrequency ablation controller and the chemical ablation injector respectively, and further connected to the corresponding input body through the corresponding interface, which is isolated and independent from each other, and will not be confused and inserted incorrectly. It has a special interface to connect the dedicated input body, thereby realizing a dedicated function. For example, for the chemical ablation injector, the proximal interface has only one chemical injection port that is connected to it. The chemical injection port and the aforementioned coolant input port, coolant output port, medical liquid input port, radiofrequency electrode end, etc. are arranged in different positions, so they will not affect each other and can be used separately and independently. Therefore, the radiofrequency ablation controller and the chemical ablation injector here are used in a time-sharing manner. Usually, the radiofrequency ablation controller is first connected to perform radiofrequency ablation. After completion, the connection between the radiofrequency ablation controller and the proximal interface is released, and then the connection between the chemical ablation injector and the proximal interface is connected, and then chemical ablation is performed.

[0064] It can be seen that the present invention discloses a radio frequency and chemical integrated ablation device, including a transmission catheter, a proximal interface for connecting a radio frequency ablation controller and / or a chemical ablation injector is provided at the proximal end of the transmission catheter, a radio frequency ablation electrode for radio frequency ablation and an injection head for chemical ablation are provided at the distal end of the transmission catheter, an electrical connector for connecting the radio frequency ablation controller and the radio frequency ablation electrode is provided in the transmission catheter, and a hollow tube for connecting the chemical ablation injector and the injection head is also provided, and the transmission catheter and the hollow tube are integrated. Through the integrated ablation device, radio frequency ablation and chemical ablation can be performed simultaneously, or radio frequency ablation and chemical ablation can be performed in time, and cooling, disinfection and other treatments can be performed during the ablation process, which is conducive to improving and enhancing the ablation effect, and can also reduce costs and treatment risks.

[0065] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A radiofrequency and chemical integrated ablation device, characterized in that: It comprises a transmission catheter, at the proximal end of which a proximal interface for connecting a radiofrequency ablation controller and / or a chemical ablation injector is arranged, at the distal end of which a radiofrequency ablation electrode for radiofrequency ablation and an injection head for chemical ablation are arranged, inside which an electrical connector for connecting the radiofrequency ablation controller and the radiofrequency ablation electrode is arranged, and a hollow tube for connecting the chemical ablation injector and the injection head is also arranged, and the transmission catheter and the hollow tube are integrated; The hollow tube is arranged inside the transmission conduit, the outer layer of the transmission conduit is a coating layer, the center of the hollow tube is sleeved inside the coating layer, an isolation layer is arranged between the coating layer and the hollow tube, and the electrical connector is arranged in the isolation layer, thereby forming an integrated structure in which the hollow tube and the electrical connector are sleeved inside the transmission conduit; The RF ablation electrode is a hollow cylinder, one end of which is tightly combined with the transmission catheter, and the other end is an arc-shaped structure with an injection hole in the center of the arc; the injection head is arranged inside the RF ablation electrode, and an expansion body is also arranged inside the injection head, and the expansion body can push the needle of the injection head to expose the injection hole after being inflated; the injection head is also provided with a fixing frame for fixing the expansion body, and the cross-section of the fixing frame is concave, including a bottom wall and a side wall; the end of the expansion body away from the needle is fixed to the bottom wall of the fixing frame, and the end of the expansion body close to the needle is connected to a movable plate; the movable plate is slidably matched with the side wall of the fixing frame.

2. The radiofrequency and chemical integrated ablation device according to claim 1, characterized in that: A medical fluid flow tube is also arranged in the isolation layer. The medical fluid flow tube extends all the way to the radio frequency ablation electrode. The radio frequency ablation electrode is provided with a flow guide hole and is in communication with the medical fluid flow tube.

3. The radiofrequency and chemical integrated ablation device according to claim 2, characterized in that: At least two cooling liquid flow pipes are also arranged in the isolation layer, and the cooling liquid flow pipes extend all the way to the radio frequency ablation electrode. A cooling pipe network is arranged inside or on the inner side of the radio frequency ablation electrode, and the two ends of the cooling pipe network are respectively connected to the two cooling liquid flow pipes, thereby forming a cooling circuit through the two cooling liquid flow pipes and the cooling pipe network, and the radio frequency ablation electrode is cooled by injecting cooling liquid into the cooling circuit.

4. The radiofrequency and chemical integrated ablation device according to claim 2, characterized in that: The proximal interface includes a medical liquid input port, which is sealed and connected with the medical liquid flow tube in the isolation layer. The radiofrequency ablation controller includes a medical liquid input body, which is inserted and sealed and connected with the medical liquid input port.

5. The radiofrequency and chemical integrated ablation device according to claim 3, characterized in that: The proximal interface includes a cooling liquid input port and a cooling liquid output port, which are respectively sealed and connected with the two liquid flow tubes in the isolation layer. The radiofrequency ablation controller includes a cooling liquid input body and a cooling liquid output body, which are respectively sealed and inserted into the cooling liquid input port and the cooling liquid output port.

6. The radiofrequency and chemical integrated ablation device according to claim 1, characterized in that: The proximal interface includes a chemical injection port and a gas injection port. A chemical pipeline and a gas pipeline are arranged in the hollow tube. The chemical injection port is tightly connected to the chemical pipeline. The chemical ablation syringe correspondingly includes a chemical injection body. After being inserted into the chemical injection port, chemotherapeutic drugs are injected into the chemical pipeline and even the injection head at the distal end; the gas injection port is tightly connected to the gas pipeline. The gas pipeline is also connected to the expansion body. The chemical ablation syringe correspondingly includes a gas injection body. After being inserted into the gas injection port, gas is injected into the gas pipeline and even the expansion body at the distal end.

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