An EBUS radiofrequency ablation needle
By designing a radio frequency ablation needle combining EBUS and radio frequency technology, the problem of difficulty in ablation of lesions in the mediastinum area of the lung is solved, precise ablation and temperature control of the mediastinum lesions in the lung is achieved, and a new interventional ablation surgery method is provided.
Patent Information
- Application Number
- CN202420729524.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-10
AI Technical Summary
The existing treatment methods for lung ablation cannot reach the lung mediastinum area and ablate the lesions in this area, resulting in the inability to treat the lesions at the lung mediastinum area through interventional ablation.
An EBUS radio frequency ablation needle is designed, including the electrode body, water pipe assembly and radio frequency cable assembly. Through the combination of EBUS technology and radio frequency technology, EBUS RFA technology is formed. The energy output of the EBUS radio frequency ablation electrode is accurately controlled to achieve the ablation of the lung mediastinal lesions.
EBUS radiofrequency ablation needle can effectively solve the problem of lesions in the mediastinum area of the lung, providing a new interventional ablation surgery method that can accurately control the temperature and avoid damage to normal cells.
Smart Images
Figure CN222693513U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an EBUS radiofrequency ablation needle. Background Art
[0002] For ablation treatment of the lungs, existing technical means are divided into percutaneous ablation and bronchoscopic ablation; percutaneous ablation is performed by inserting the ablation needle into the lesion through percutaneous puncture, and ablation treatment is performed, which can solve the treatment of lesions in the peripheral and intermediate zones of the lungs. Bronchoscopic ablation is performed by inserting the ablation catheter into / close to the lesion through an endoscope, and ablation treatment can solve the lesions in the tracheal cavity; however, the instruments using the above methods cannot reach the mediastinum area of the lung and ablate the lesions in this area, and thus the lesions in the mediastinum of the lung cannot be treated by interventional ablation.
[0003] Therefore, an EBUS radiofrequency ablation needle is designed to solve the above technical problems. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the existing lung ablation treatment methods cannot reach the pulmonary mediastinum area and ablate the lesions in this area, thereby making it impossible to treat the lesions in the pulmonary mediastinum by interventional ablation.
[0005] The utility model provides the following technical solutions: an EBUS radiofrequency ablation needle, comprising an electrode body, a water pipe assembly and a radiofrequency cable assembly, wherein the water pipe assembly and the radiofrequency cable assembly are installed at one end of the electrode body;
[0006] The electrode body includes a flexible electrode needle, an outer sheath, a holding handle, an adjustment handle, and a rear handle;
[0007] The electrode body has an adjustment handle that slides along the second adjustment rod and cooperates with the second locking mechanism to adjust the sliding state and the locking state of the working length of the flexible electrode needle extending out of the outer sheath tube.
[0008] Preferably, the electrode body also has a sliding state and a locking state in which the gripping handle slides along the No. 1 adjustment rod and cooperates with the No. 1 locking mechanism to adjust the length of the outer sheath tube.
[0009] Preferably, a cavity is provided in the rear handle, and a water tank and a temperature-sensing thermocouple wire are installed in the cavity; the water tank is connected to the water pipe, and the temperature-sensing thermocouple wire is connected to the radio frequency cable plug.
[0010] Preferably, the flexible electrode needle comprises a radiofrequency ablation electrode and an insulating heat shrink film, the radiofrequency ablation electrode is installed inside the outer sheath tube, and the radiofrequency ablation electrode is wrapped with an insulating heat shrink film.
[0011] Preferably, the exposed length of the electrode wrapped by the insulating heat shrinkable film is the effective length of the electrode.
[0012] Preferably, the radiofrequency ablation electrode comprises a needle tube, a needle and an injection hole. The needle tube is installed inside the outer sheath tube, and the needle tube is equipped with a water pipe and a temperature-sensitive thermocouple wire. A needle is installed at one end of the needle tube, and an injection hole is arranged in an array on the needle tube, and the injection hole is connected to the water pipe.
[0013] Preferably, the portion of the needle tube exposed outside the insulating heat shrink film is subjected to a developing treatment process.
[0014] Preferably, the needle is in the shape of a triangular pyramid.
[0015] The beneficial effects of the utility model are as follows:
[0016] 1. The utility model introduces a new surgical method in the field of respiratory interventional lung ablation by setting an electrode body and then cooperating with the EBUS radiofrequency ablation system to solve the ablation of mediastinal lesions, such as lymph node cancer and squamous cell carcinoma of malignant metastasis of lung cancer. By combining EBUS technology with radiofrequency technology, EBUS RFA technology is formed to create an EBUS radiofrequency ablation needle that reaches the mediastinum outside the tracheal cavity through ultrasonic bronchoscope-guided puncture, solving the treatment area that cannot be reached clinically today. The radiofrequency ablation device accurately controls the energy output of the EBUS radiofrequency ablation electrode to achieve the effect of ablating the lesion.
[0017] 2. The utility model sets a water circulation path on the electrode body, and circulates water to the lesion through the cooperation of the water pipe, the water tank and the injection hole, so as to achieve precise control of the temperature between 60-100°C, thereby avoiding the phenomenon of excessive temperature and damage to normal cells during radiofrequency ablation. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the holding handle and the adjusting handle of the utility model;
[0021] Figure 3 This is a schematic diagram of the flexible electrode structure of the utility model;
[0022] Figure 4 This is a schematic diagram of the effective length structure of the radio frequency ablation electrode of the utility model;
[0023] Figure 5 This is a schematic diagram of the internal structure of the radiofrequency ablation electrode of the utility model;
[0024] Figure 6 This is a schematic diagram of the internal structure of the handle of the utility model.
[0025] In the figure: 1. electrode body; 11. holding handle; 111. locking mechanism No. 1; 112. adjusting rod No. 1; 12. outer sheath; 13. flexible electrode needle; 131. radiofrequency ablation electrode; 1311. needle tube; 1312. needle head; 1313. injection hole; 132. insulating heat shrink film; 14. adjusting handle; 141. locking mechanism No. 2; 142. adjusting rod No. 2; 15. rear handle; 151. cavity; 2. water pipe assembly; 21. water pipe; 22. water tank; 3. radio frequency cable assembly; 31. radio frequency cable plug; 32. temperature sensing thermocouple wire. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model for which protection is sought, but merely represents some embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invention product is usually placed when in use. Such terms are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention.
[0029] It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] The disclosed embodiments are intended to solve the problem that existing lung ablation treatment methods cannot reach the mediastinum area of the lung and ablate the lesions in this area, thereby making the lesions in the mediastinum of the lung unable to be treated by interventional ablation. In view of this, the disclosed embodiments propose an EBUS radiofrequency ablation needle. This product introduces a new procedure in the field of respiratory interventional lung ablation through an EBUS radiofrequency ablation system to solve the ablation of mediastinal lesions, such as lymph node cancer and squamous cell carcinoma of malignant metastasis of lung cancer. By combining EBUS technology with radiofrequency technology, EBUS RFA technology is formed to create an EBUS radiofrequency ablation needle that reaches the mediastinum outside the tracheal cavity through ultrasonic bronchoscope-guided puncture, solving the treatment area that cannot be reached clinically today. The energy output of the EBUS radiofrequency ablation electrode is precisely controlled by the radiofrequency ablation device to achieve the effect of ablating the lesion.
[0031] like Figures 1 to 6 As shown, an EBUS radiofrequency ablation needle comprises an electrode body 1, a water pipe assembly 2 and a radiofrequency cable assembly 3. The electrode body 1 is used to cooperate with an ultrasonic bronchoscope to ablate lesions in the mediastinum of the lung; the water pipe assembly 2 and the radiofrequency cable assembly 3 are installed at one end of the electrode body 1; the water pipe assembly 2 is used to simultaneously realize the function of injecting medicine or water during ablation;
[0032] The water pipe assembly 2 includes a water pipe 21 and a water tank 22; the water pipe 21 is used to transport liquid into the electrode body 1, and the water tank 22 is used to buffer the liquid flowing into the electrode body;
[0033] The electrode body 1 includes a flexible electrode needle 13, an outer sheath 12, a gripping handle 11, an adjusting handle 14, and a rear handle 15; the flexible electrode needle 13 has sufficient hardness for lesion puncture and has flexibility that is easy to adapt to bending deformation, and can be inserted along the working channel of the ultrasonic bronchoscope and puncture to reach the lesion location;
[0034] The electrode body 1 has an adjustment handle 14 that slides along a No. 2 adjustment rod 142 and cooperates with a No. 2 locking mechanism 141 to adjust the sliding state and locking state of the working length of the flexible electrode needle 13 extending out of the outer sheath 12; the No. 2 adjustment rod 142 is provided with a scale mark; the staff will unlock the No. 2 locking mechanism 141 according to the required working length of the flexible electrode needle 13, move the No. 2 locking mechanism 141 to the corresponding distance according to the scale mark on the No. 2 adjustment rod 142, and then move the adjustment handle 14 to the corresponding distance, thereby adjusting the working length of the flexible electrode needle 13 extending out of the outer sheath 12.
[0035] like Figures 1 to 6 As shown, the electrode body 1 also has a gripping handle 11 that slides along a No. 1 adjusting rod 112 and cooperates with a No. 1 locking mechanism 111 to adjust a sliding state and a locking state of the outer sheath tube 12; the gripping handle 11 is made of PC or other materials, and a scale mark is provided on the No. 1 adjusting rod 112, and the scale mark is used to adjust and lock the matching length between the outer sheath tube 12 and the ultrasonic bronchoscope; the staff unlocks by pressing the No. 1 locking mechanism 111 and adjusts the position of the gripping handle 11 according to the scale mark on the No. 1 adjusting rod 112 and locks it, thereby adjusting the matching position relationship between the outer sheath tube 12 and the ultrasonic bronchoscope.
[0036] The No. 1 locking mechanism 111 and the No. 2 locking mechanism 141 complete locking and adjustment work by pressing the buckles inside them to slide on the No. 1 adjustment rod 112 and the No. 2 adjustment rod 142 respectively.
[0037] like Figures 1 to 6 As shown, a cavity 151 is provided in the rear handle 15, and the cavity 151 is used to store the water tank 22; the water tank 22 is installed in the cavity 151, and one end of the temperature-sensing thermocouple wire 32 passes through the water tank 22 along the inside of the water pipe 21 and is connected to a thermocouple arranged at one end of the water pipe 21 near the radio frequency ablation electrode, and the temperature of the radio frequency ablation electrode is monitored by the thermocouple, and the other end of the temperature-sensing thermocouple wire 32 is connected to the radio frequency cable assembly 3; wherein the water tank 22 is connected to the water pipe 21.
[0038] like Figures 1 to 6 As shown, the flexible electrode needle 13 includes a radio frequency ablation electrode 131 and an insulating heat shrink film 132. The radio frequency ablation electrode 131 is installed inside the outer sheath 12. The material of the radio frequency ablation electrode 131 is 06Cr19Ni10 or other metal alloy materials; the radio frequency ablation electrode 131 is used to achieve radio frequency ablation of the lesion after being connected to the radio frequency energy generator through a radio frequency line; the radio frequency ablation electrode 131 is wrapped with an insulating heat shrink film 132, and the exposed part of the radio frequency ablation electrode 131 is the effective length of the radio frequency ablation electrode 131.
[0039] like Figures 1 to 6As shown, the radiofrequency ablation electrode 131 includes a needle tube 1311, a needle 1312 and an injection hole 1313. The needle tube 1311 is installed inside the outer sheath 12; a water pipe 21 and a temperature-sensing thermocouple wire 32 are installed in the needle tube 1311, a needle 1312 is installed at one end of the needle tube 1311, and injection holes 1313 are arranged in an array on the needle tube 1311. The injection holes 1313 are used to output liquid medicine or water to the ablation area, and the injection holes 1313 are connected to the water pipe 21.
[0040] like Figures 1 to 6 As shown, the portion of the needle tube 1311 exposed outside the insulating heat shrink film 132 is subjected to a development treatment process, and the distal end of the radiofrequency ablation electrode 131 is subjected to a development enhancement process by sandblasting or laser engraving to ensure that the effective electrode portion is clearly visible under the ultrasonic bronchoscope.
[0041] like Figure 4 As shown, the needle 1312 is in the shape of a triangular pyramid. Compared with the existing needle 1312, the triangular pyramid needle 1312 is more conducive to puncturing the lesion site.
[0042] Working process: First, obtain the location of the lesion through ultrasonic bronchoscope examination. After the location of the lesion is determined, insert the radiofrequency ablation electrode into the ultrasonic bronchoscope. According to the working length of the ultrasonic bronchoscope and the location of the lesion, adjust the working length of the flexible electrode needle 13 extending out of the outer sheath 12 by adjusting the handle 14. Hold the handle 11 to adjust the matching length between the outer sheath 12 and the ultrasonic bronchoscope. After observing the radiofrequency ablation electrode reaching the lesion location through the image, connect the radiofrequency cable assembly 3 to the radiofrequency energy generator, turn on the radiofrequency energy generator to provide radiofrequency current, and heat the temperature of the lesion location to above 60°C through the radiofrequency ablation electrode, so that the protein of the lesion cells denatures and coagulates, resulting in irreversible necrosis, thereby achieving the purpose of killing tumor cells. In the process of radiofrequency ablation, water is transported to the lesion through the cooperation of the water pipe 21, the water tank 22 and the injection hole 1313, so as to achieve accurate control of the temperature between 60-100°C, thereby avoiding the phenomenon of excessive temperature and damage to normal cells during radiofrequency ablation. After the ablation operation is completed, the instruments are removed from the patient's body in turn.
[0043] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An EBUS radiofrequency ablation needle, characterized in that: It comprises an electrode body (1), a water pipe assembly (2) and a radio frequency cable assembly (3); one end of the electrode body (1) is installed with the water pipe assembly (2) and the radio frequency cable assembly (3); the radio frequency cable assembly (3) comprises a radio frequency cable plug (31) and a temperature-sensing thermocouple wire (32); The electrode body (1) comprises a flexible electrode needle (13), an outer sheath (12), a holding handle (11), an adjustment handle (14), and a rear handle (15); The electrode body (1) has a sliding state and a locking state for adjusting the working length of the flexible electrode needle (13) extending out of the outer sheath (12) by sliding along a second adjusting rod (142) and cooperating with a second locking mechanism (141).
2. The EBUS radiofrequency ablation needle according to claim 1, characterized in that: The electrode body (1) also has a sliding state and a locking state in which the gripping handle (11) slides along the No. 1 adjustment rod (112) and cooperates with the No. 1 locking mechanism (111) to adjust the length of the outer sheath tube (12).
3. The EBUS radiofrequency ablation needle according to claim 2, characterized in that: A cavity (151) is provided in the rear handle (15), and a water tank (22) and a temperature-sensing thermocouple wire (32) are installed in the cavity (151); the water tank (22) is connected to the water pipe (21), and the temperature-sensing thermocouple wire (32) is connected to the radio frequency cable plug (31).
4. The EBUS radiofrequency ablation needle according to claim 3, characterized in that: The flexible electrode needle (13) comprises a radiofrequency ablation electrode (131) and an insulating heat shrink film (132); the radiofrequency ablation electrode (131) is installed inside the outer sheath tube (12); and the radiofrequency ablation electrode (131) is wrapped with the insulating heat shrink film (132).
5. The EBUS radiofrequency ablation needle according to claim 4, characterized in that: The radiofrequency ablation electrode (131) comprises a needle tube (1311), a needle head (1312) and an injection hole (1313); the needle tube (1311) is installed inside the outer sheath tube (12), and a water pipe (21) and a temperature-sensing thermocouple wire (32) are installed inside the needle tube (1311); a needle head (1312) is installed at one end of the needle tube (1311), and injection holes (1313) are arranged in an array on the needle tube (1311); the injection holes (1313) are connected to the water pipe (21).
6. The EBUS radiofrequency ablation needle according to claim 5, characterized in that: The portion of the needle tube (1311) exposed outside the insulating heat shrink film (132) is subjected to a developing treatment process.
7. The EBUS radiofrequency ablation needle according to claim 6, characterized in that: The needle (1312) is in the shape of a triangular pyramid.