Radio frequency ablation needle with laser fiber
By integrating laser fibers in the radiofrequency ablation needle, the ablation effect is enhanced by using the photothermal principle, the problem of incomplete radiofrequency ablation is solved, and the integrity and safety of liver cancer treatment is improved.
Patent Information
- Application Number
- CN202421579063.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-07-05
AI Technical Summary
When performing radiofrequency ablation surgery for liver cancer, especially for irregular liver cancer, the prior art requires multiple punctures or multiple ablation needles to be treated simultaneously, resulting in unstable ablation temperature, which may lead to incomplete radiofrequency ablation, increase the probability of pain and complications in patients, and may promote the recurrence and metastasis of liver cancer.
A radio frequency ablation needle with laser fiber is designed. It is connected to the outer wall laser through the laser fiber, and emits laser light from one end of the sub-electrode needle at the tip of the needle. The principle of photothermal heat generation is used to continuously generate heat, combined with radio frequency ablation, reduce heat loss and ensure uniformity of the ablation temperature.
It effectively increases the ablation range, reduces the damage to peripheral tissues by repeated puncture, ensures the integrity of ablation, reduces the risk of tumor recurrence or metastasis, and improves the safety and effectiveness of treatment.
Smart Images
Figure CN222565936U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a radio frequency ablation needle with laser fiber. Background Art
[0002] Minimally invasive treatment is widely used in surgical operations due to its small trauma, less pain, fast patient recovery, and high efficiency. Among them, thermal ablation (including radiofrequency ablation and laser ablation) is a major means of eliminating tumor tissue. Radiofrequency ablation, as a thermal ablation procedure with minimal trauma, is widely used in the treatment of tumors in various organs such as the liver, lungs, kidneys, thyroid, prostate, and uterus. The treatment mechanism of this technology is to emit an alternating current of a certain frequency through a radio frequency generator, and excite the charged particles or ions in the surrounding tissues through the radio frequency electrode needle, oscillate at high speed, and generate heat through friction. The temperature can reach 50-110°C, causing coagulative necrosis of tumor cells around the electrode to directly damage the lesions and achieve the purpose of tumor treatment.
[0003] In the prior art, during the radiofrequency ablation surgical treatment of liver cancer, especially for irregular-shaped liver cancer, in order to ensure the ablation range, it is usually necessary to undergo multiple punctures or multiple ablation needles for simultaneous treatment. Moreover, due to factors such as excessive size of some lesions and fast blood flow, it is easy to cause unstable ablation temperature, which will lead to insufficient local temperature to kill tumor tissue, causing incomplete radiofrequency ablation. In clinical treatment, multiple punctures are often used to avoid this phenomenon in order to maximize the ablation effect. However, multiple punctures will increase the patient's physical pain and the probability of complications, and the latest studies have shown that incomplete ablation will promote the recurrence and metastasis of liver cancer. Therefore, the present application provides a radiofrequency ablation needle with a laser fiber to meet the needs. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a radiofrequency ablation needle with a laser fiber to solve the problem that in the existing radiofrequency ablation surgical treatment of liver cancer, especially radiofrequency ablation of irregular liver cancer, in order to ensure the ablation range, multiple punctures or multiple ablation needles are usually required to perform treatment simultaneously. In addition, due to factors such as some lesions are too large and the blood flow rate is fast, it is easy to cause unstable ablation temperature, which will lead to the local temperature being insufficient to kill the tumor tissue and cause incomplete radiofrequency ablation. In clinical treatment, multiple punctures are often used to avoid this phenomenon in order to maximize the ablation effect. However, multiple punctures will increase the patient's physical pain and the probability of complications, and the latest research shows that incomplete ablation will promote the recurrence and metastasis of liver cancer.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] A radiofrequency ablation needle with a laser fiber comprises a needle tip, a needle tube, a handle and an ablation electrode, wherein the needle tip is fixedly connected to one end of the needle tube, and the other end of the needle tube is fixedly connected to the inner wall of the handle, the needle tip is in a conical shape, and an axially distributed pipe one and a plurality of pipes two distributed circumferentially along the pipe are arranged in the needle tip, a tubular needle core is arranged in the pipe one, and the pipe two is bent outwardly and divergently distributed, a needle tip side hole is opened on the pipe two, a sub-electrode needle is arranged in the pipe two, and one end of the sub-electrode needle extends out from the needle tip side hole; a pipe three is fixedly connected in the needle tube, and one end of the pipe three is fixedly connected to the inner wall of the handle, the ablation electrode is arranged in the pipe three, and one end of the inner wall of the pipe three is fixedly connected to a temperature sensor, and the inner wall of the needle tube and the outer wall of the pipe three are fixedly connected to the same pair of baffles, A pair of water-blocking plates, the inner wall of the needle tube and the pipe three together form a condensation water chamber, and the condensation water chamber is connected to the pipe six and the pipe seven respectively; the handle includes a push-pull button, a scale panel and an internal lead wire chamber, and the push-pull button is fixedly connected to the ablation electrode through a push rod, and the lead wire chamber is arranged at one end of the handle, and the needle core is arranged in the lead wire chamber, and the lead wire chamber is also provided with an electrode wire, a laser fiber, and a temperature sensor cable, and one end of the temperature sensor cable is connected to the temperature sensor; the ablation electrode includes a sub-electrode needle, a pipe four, a plurality of pipes five and an electrode needle card block, and an electrode wire tube, a laser fiber wire tube and a temperature sensor wire tube are arranged on one side of the electrode needle card block, and the electrode wire is arranged in the electrode wire tube, the laser fiber wire tube is provided with a laser fiber, and the temperature sensor wire tube is provided with a temperature sensor cable.
[0007] Preferably, one end of the handle is fixedly connected to a wiring panel, and a water inlet and a drain outlet are respectively provided on the wiring panel, the pipe six is connected to the water inlet, and the pipe seven is connected to the drain outlet, a needle core fixing hole is provided on the wiring panel, one end of the needle core is fixedly connected to the needle core fixing hole, the wiring panel is also provided with an electrode interface and an optical fiber interface, the electrode interface is connected to the electrode wire tube, the optical fiber interface is connected to the laser fiber wire tube, and the wiring panel is provided with a temperature sensor interface connected to the temperature sensor cable.
[0008] Preferably, one end of the needle core is fixedly connected to one end of the inner wall of the needle tip, and the other end of the needle core is fixedly connected to the needle core fixing hole.
[0009] Preferably, the needle tube is provided with scale lines.
[0010] Preferably, the push-pull button can slide on the handle, and the scale panel is provided with scales and a central groove.
[0011] Preferably, laser fibers are fixed in each of the plurality of pipes 5, and one end of the laser fiber is connected to the sub-electrode needle.
[0012] Preferably, the electrode needle clamp block is slidably connected to the needle core, and the electrode wire contacts the electrode needle clamp block to make the needle core and the sub-electrode needle conductive.
[0013] Preferably, the condensed water in the condensed water chamber flows sequentially through the water injection port, the pipe six, the condensed water chamber, the pipe seven and the drain port.
[0014] Compared with the prior art, the utility model has at least the following beneficial effects:
[0015] In the above scheme, through the set laser fiber, during the radiofrequency ablation operation, the laser fiber is connected to the outer wall laser, and laser is emitted from one end of the sub-electrode needle at the needle tip, so as to utilize the principle of photothermal heating to make the irradiated tumor tissue continuously generate heat, which can effectively increase the ablation range, thereby reducing the damage caused by repeated punctures to the surrounding normal tissues. Secondly, radio frequency combined with photothermal ablation can effectively reduce heat loss, ensure the uniformity of ablation temperature, make ablation more complete, and effectively make up for the incomplete ablation caused by insufficient radiofrequency ablation temperature, which may lead to tumor recurrence or metastasis.
[0016] Through the fiber optic interface, lasers of different wavelengths can be selected for access during the operation, and photosensitizers can be injected into the tumor through the needle core to achieve tumor photodynamic therapy that produces active oxygen, thereby extending the treatment method of superficial tumors to deep tumors. The radiofrequency ablation needle provided by the utility model can simultaneously perform radiofrequency ablation, photothermal ablation, photodynamic therapy, or perform one of the treatment methods in time after puncturing into the tumor, thereby achieving better treatment effects.
[0017] Through the set temperature sensor, during surgical treatment, the set temperature sensor can monitor the surrounding temperature of the ablation electrode when it is working. The operator can control the input power of radio frequency and photothermal ablation according to the monitored temperature changes, thereby improving the performance of the entire ablation needle.
[0018] The handle is designed to be smooth when in use, with a comfortable groove suitable for the operator to hold, and the angle is easy to adjust during the puncture process. At the same time, the tail of the handle is equipped with an electrode interface, optical fiber interface and water injection port through the wiring panel, which can quickly realize the connection of the ablation electrode, laser fiber and circulating water circuit, effectively shorten the operation preparation time, facilitate surgical operations, and improve the practicality of the entire ablation needle.
[0019] Through the set pipe six and pipe seven, when in use, water is introduced through the set water injection port, and the condensed water forms a circulation loop through the condensed water chamber, pipe six, pipe seven and the drain port, thereby preventing burns on the puncture path caused by the excessive temperature of the radiofrequency ablation needle body. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.
[0021] Figure 1 It is a schematic diagram of the top view and cross-sectional structure of a radiofrequency ablation needle with a laser fiber.
[0022] Figure 2 It is a schematic diagram of the top view structure of the radiofrequency ablation needle with laser fiber in two states of extension and retraction.
[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the needle tip position when the sub-electrode needle is extended.
[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the needle tip position when the sub-electrode needle is retracted.
[0025] Figure 5 It is a schematic diagram of the side view structure of the needle tip position.
[0026] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the needle tube when viewed from above.
[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the needle tube from the side.
[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the connection between the needle tube and the handle.
[0029] Fig. 9 A top view of the cross-sectional structure inside the handle Figure 1 .
[0030] Fig.10 A top view of the cross-sectional structure inside the handle Figure 2 .
[0031] Fig.11 It is a schematic diagram of the cross-sectional structure of the handle tail viewed from above.
[0032] Fig.12 This is a schematic diagram of the side structure of the wiring panel.
[0033] In the figure: 1. needle tip; 101. pipeline one; 102. pipeline two; 103. needle tip side hole; 2. needle tube; 201. pipeline three; 202. water barrier; 203. condensation water chamber; 204. pipeline six; 205. pipeline seven; 206. scale line; 3. handle; 4. ablation electrode; 401. sub-electrode needle; 402. push rod; 403. pipeline four; 404. pipeline five; 5. needle core; 6. push-pull button; 7. scale panel; 8. Wiring panel; 801. Water inlet; 802. Drain outlet; 803. Electrode interface; 804. Optical fiber interface; 805. Needle core fixing hole; 9. Lead cavity; 10. Electrode wire; 11. Laser fiber; 12. Temperature sensor; 1201. Temperature sensor interface; 1202. Temperature sensor cable; 1203. Temperature sensor wire tube; 13. Electrode needle block; 1301. Electrode wire tube; 1302. Laser fiber tube.
[0034] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION
[0035] The following is a detailed description of a radiofrequency ablation needle with a laser fiber provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.
[0036] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).
[0037] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.
[0038] It will be understood that the meaning of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.
[0039] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.
[0040] like Figure 1-Figure 12As shown, an embodiment of the utility model provides a radiofrequency ablation needle with a laser fiber, comprising a needle tip 1, a needle tube 2, a handle 3 and an ablation electrode 4, the needle tip 1 is fixedly connected to one end of the needle tube 2, the other end of the needle tube 2 is fixedly connected to the inner wall of the handle 3, the needle tip 1 is conical, an axially distributed pipeline 101 and a plurality of pipelines 102 distributed circumferentially along the pipeline 101 are arranged in the needle tip 1, a tubular needle core 5 is arranged in the pipeline 101, the pipeline 102 is bent outward and is distributed divergently, and the pipeline 202 is arranged in a cylindrical shape. A needle tip side hole 103 is opened on the tube 102, a sub-electrode needle 401 is arranged in the tube 102, and one end of the sub-electrode needle 401 extends out from the needle tip side hole 103; the tube 2 is fixedly connected to the tube 3 201, one end of the tube 3 201 is fixedly connected to the inner wall of the handle 3, the ablation electrode 4 is arranged in the tube 3 201, one end of the inner wall of the tube 3 201 is fixedly connected to the temperature sensor 12, the inner wall of the needle tube 2 and the outer wall of the tube 3 201 are fixedly connected to the same pair of baffles 202, a pair of baffles 202, the inner wall of the needle tube 2 and the pipeline three 201 together form a condensation water chamber 203, and the condensation water chamber 20 is connected to the pipeline six 204 and the pipeline seven 205 respectively; the handle 3 includes a push-pull button 6, a scale panel 7 and an internal lead wire chamber 9, the push-pull button 6 is fixedly connected to the ablation electrode 4 through a push rod 402, the lead wire chamber 9 is arranged at one end of the handle 3, the needle core 5 is arranged in the lead wire chamber 9, and the lead wire chamber 9 is also provided with an electrode line 10, a laser fiber 11, a temperature sensor cable 1202, and a temperature sensor One end of the cable 1202 is connected to the temperature sensor 12; the ablation electrode 4 includes a sub-electrode needle 401, a pipe four 403, multiple pipe fives 404 and an electrode needle card block 13, and one side of the electrode needle card block 13 is provided with an electrode wire tube 1301, a laser fiber wire tube 1302 and a temperature sensor wire tube 1203, the electrode wire tube 1301 is provided with an electrode wire 10, the laser fiber wire tube 1302 is provided with a laser fiber 11, and the temperature sensor wire tube 1203 is provided with a temperature sensor cable 1202.
[0041] By setting the laser fiber 11, during the radiofrequency ablation operation, the laser fiber 11 is connected to the outer wall laser, and the laser is emitted from one end of the sub-electrode needle 401 of the needle tip 1, so as to utilize the principle of photothermal heating to make the irradiated tumor tissue continuously generate heat, which can effectively increase the ablation range, thereby reducing the damage caused by repeated punctures to the surrounding normal tissues. Secondly, radiofrequency combined with photothermal ablation can effectively reduce heat loss, ensure the uniformity of ablation temperature, make ablation more complete, and effectively make up for the incomplete ablation caused by insufficient radiofrequency ablation temperature, which may lead to tumor recurrence or metastasis.
[0042] Through the provided optical fiber interface 804, lasers of different wavelengths can be selectively connected during the operation, and photosensitizers can be injected into the tumor through the needle core 5 to achieve tumor photodynamic therapy that produces active oxygen, thereby extending the treatment method of superficial tumors to deep tumors. The radiofrequency ablation needle provided by the utility model can simultaneously perform radiofrequency ablation, photothermal ablation, photodynamic therapy, or perform one of the treatment methods in time after puncturing into the tumor, thereby achieving a better treatment effect.
[0043] Through the temperature sensor 12, during surgical treatment, the temperature sensor 12 can monitor the ambient temperature of the ablation electrode 4 when it is working. The operator can control the input power of radio frequency and photothermal ablation according to the monitored temperature changes, thereby improving the performance of the entire ablation needle.
[0044] like Figure 1-Figure 12 As shown, one end of the handle 3 is fixedly connected to a wiring panel 8, and a water inlet 801 and a drain outlet 802 are respectively provided on the wiring panel 8, the pipe six 204 is connected to the water inlet 801, and the pipe seven 205 is connected to the drain outlet 802, a needle core fixing hole 805 is provided on the wiring panel 8, and one end of the needle core 5 is fixedly connected to the needle core fixing hole 805, the wiring panel 8 is also provided with an electrode interface 803 and an optical fiber interface 804, the electrode interface 803 is connected to the electrode wire tube 1301, the optical fiber interface 804 is connected to the laser fiber wire tube 1302, and the wiring panel 8 is provided with a temperature sensor interface 1201 connected to the temperature sensor cable 1202.
[0045] The handle 3 is provided, when in use, the surface of the handle 3 is smooth, and is provided with a comfortable groove suitable for the operator to hold, and the angle is easy to adjust during the puncture process. At the same time, the tail of the handle 3 is provided with an electrode interface 803, an optical fiber interface 804 and a water injection port 801 through the wiring panel 8, which can quickly realize the connection between the ablation electrode 4, the laser fiber 11 and the circulating water circuit, can effectively shorten the operation preparation time, facilitate the operation, and improve the practicality of the entire ablation needle.
[0046] Through the set pipe six 204 and pipe seven 205, when in use, water is introduced through the set water injection port 801, and condensed water forms a circulation loop through the condensed water chamber 203, pipe six 204, pipe seven 205 and drain port 802, thereby preventing burns on the puncture path caused by excessive temperature of the radiofrequency ablation needle body.
[0047] like Figure 1 , Figure 3 and Fig.11 As shown, one end of the needle core 5 is fixedly connected to one end of the inner wall of the needle tip 1, and the other end of the needle core 5 is fixedly connected to the needle core fixing hole 805, so that the operator can inject the drug solution from the needle core 5 through the needle tip 1 to the affected area.
[0048] like Figure 1 As shown, the needle tube 2 is provided with scale lines 206, each small grid represents one centimeter, five small grids form a large grid, and the total length of the needle tube 2 exposed outside the handle 3 is twenty centimeters. The scale lines 206 can indicate the puncture depth.
[0049] like Figure 2 As shown, the push-pull button 6 can slide on the handle 3, and the scale panel 7 is provided with scales and a central groove. The push-pull button 6 drives the ablation electrode 4 body, the sub-electrode needle 401 and the electrode needle block 13 to slide left and right through the push rod 402, so that the sub-electrode needle 401 passes through the needle tip side hole 103. After the sub-electrode needle 401 extends out of the needle tip 1, it will naturally bend due to elasticity, so that it stretches around the needle tip 1 to form a pattern structure. The greater the extension distance, the more obvious the deformation, so that the radio frequency range and the laser irradiation range are larger, which can be observed through the display panel of the handle 3. The scale set on the scale panel 7 can display the radio frequency ablation diameter at the front end of the push-pull button 6, and the central groove allows the push rod 402 to move left and right.
[0050] like Figure 7 and Figure 4 As shown, laser fibers 11 are fixed in the multiple pipes 5 404, one end of the laser fiber 11 is connected to the sub-electrode needle 401, and the distance that the sub-electrode needle 401 and the laser fiber 11 pass through the needle tip side hole 103 is controlled by pushing and pulling the button 6 to achieve the effect of controlling the ablation range.
[0051] As shown in 10 , the electrode needle block 13 is slidably connected to the needle core 5 , and the electrode wire 10 makes the needle core 5 and the sub-electrode needle 401 conductive by contacting the electrode needle block 13 . The electrode needle block 13 is mainly used to limit the sliding distance of the ablation electrode 4 toward one end.
[0052] like Figure 9-11 As shown, the condensed water in the condensed water chamber 203 flows through the water inlet 801, pipe six 204, condensed water chamber 203, pipe seven 205 and drain port 802 in sequence, and the condensed water forms a circulation loop to prevent burns on the puncture path caused by excessive temperature of the radiofrequency ablation needle body.
[0053] The technical solution provided by the utility model is that, through the laser fiber that is set, during the radiofrequency ablation operation, the laser fiber is connected to the outer wall laser, and laser is emitted from one end of the sub-electrode needle at the needle tip, so as to utilize the principle of photothermal heating to make the irradiated tumor tissue continuously generate heat, which can effectively increase the ablation range, thereby reducing the damage caused by repeated punctures to the surrounding normal tissues. Secondly, radio frequency combined with photothermal ablation can effectively reduce heat loss, ensure the uniformity of ablation temperature, make ablation more complete, and effectively compensate for tumor recurrence or metastasis caused by incomplete ablation due to insufficient radiofrequency ablation temperature.
[0054] Through the fiber optic interface, lasers of different wavelengths can be selected for access during the operation, and photosensitizers can be injected into the tumor through the needle core to achieve tumor photodynamic therapy that produces active oxygen, thereby extending the treatment method of superficial tumors to deep tumors. The radiofrequency ablation needle provided by the utility model can simultaneously perform radiofrequency ablation, photothermal ablation, photodynamic therapy, or perform one of the treatment methods in time after puncturing into the tumor, thereby achieving better treatment effects.
[0055] Through the set temperature sensor, during surgical treatment, the set temperature sensor can monitor the surrounding temperature of the ablation electrode when it is working. The operator can control the input power of radio frequency and photothermal ablation according to the monitored temperature changes, thereby improving the performance of the entire ablation needle.
[0056] The handle is designed to be smooth when in use, with a comfortable groove suitable for the operator to hold, and the angle is easy to adjust during the puncture process. At the same time, the tail of the handle is equipped with an electrode interface, optical fiber interface and water injection port through the wiring panel, which can quickly realize the connection of the ablation electrode, laser fiber and circulating water circuit, effectively shorten the operation preparation time, facilitate surgical operations, and improve the practicality of the entire ablation needle.
[0057] Through the set pipe six and pipe seven, when in use, water is introduced through the set water injection port, and the condensed water forms a circulation loop through the condensed water chamber, pipe six, pipe seven and the drain port, thereby preventing burns on the puncture path caused by the excessive temperature of the radiofrequency ablation needle body.
[0058] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details.
[0059] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.
[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A radiofrequency ablation needle with a laser fiber, characterized in that: include: A needle tip, a needle tube, a handle and an ablation electrode, wherein the needle tip is fixedly connected to one end of the needle tube, and the other end of the needle tube is fixedly connected to the inner wall of the handle. The needle tip is conical, and an axially distributed pipeline 1 and a plurality of pipelines 2 distributed along the pipeline are arranged in the needle tip. A tubular needle core is arranged in the pipeline 1, and the pipeline 2 is bent outwardly and distributed divergently. A needle tip side hole is opened on the pipeline 2, and a sub-electrode needle is arranged in the pipeline 2, and one end of the sub-electrode needle extends out from the needle tip side hole; A pipe three is fixedly connected inside the needle tube, one end of which is fixedly connected to the inner wall of the handle, the ablation electrode is arranged inside the pipe three, one end of the inner wall of the pipe three is fixedly connected to a temperature sensor, the inner wall of the needle tube and the outer wall of the pipe three are fixedly connected to the same pair of baffles, the pair of baffles, the inner wall of the needle tube and the pipe three together form a condensation water chamber, and the condensation water chamber is respectively connected to pipe six and pipe seven; The handle comprises a push-pull button, a scale panel and an internal lead wire cavity, wherein the push-pull button is fixedly connected to the ablation electrode via a push rod, the lead wire cavity is arranged at one end of the handle, the needle core is arranged in the lead wire cavity, an electrode wire, a laser fiber and a temperature sensor cable are also arranged in the lead wire cavity, and one end of the temperature sensor cable is connected to the temperature sensor; The ablation electrode includes a sub-electrode needle, a pipe four, a plurality of pipes five and an electrode needle card block. An electrode wire tube, a laser fiber wire tube and a temperature sensor wire tube are arranged on one side of the electrode needle card block. The electrode wire tube is arranged inside the electrode wire tube, the laser fiber wire tube is arranged with a laser fiber, and the temperature sensor wire tube is arranged with a temperature sensor cable.
2. The radiofrequency ablation needle with laser fiber according to claim 1, characterized in that: One end of the handle is fixedly connected to a wiring panel, and a water inlet and a drain outlet are respectively provided on the wiring panel. The pipe six is connected to the water inlet, and the pipe seven is connected to the drain outlet. A needle core fixing hole is provided on the wiring panel, and one end of the needle core is fixedly connected to the needle core fixing hole. The wiring panel is also provided with an electrode interface and an optical fiber interface, the electrode interface is connected to the electrode wire tube, and the optical fiber interface is connected to the laser fiber wire tube. The wiring panel is provided with a temperature sensor interface connected to the temperature sensor cable.
3. The radiofrequency ablation needle with laser fiber according to claim 1, characterized in that: One end of the needle core is fixedly connected to one end of the inner wall of the needle tip, and the other end of the needle core is fixedly connected to the needle core fixing hole.
4. The radiofrequency ablation needle with laser fiber according to claim 1, characterized in that: The needle tube is provided with scale lines.
5. The radiofrequency ablation needle with laser fiber according to claim 1, characterized in that: The push-pull button can slide on the handle, and the scale panel is provided with scales and a central groove.
6. The radiofrequency ablation needle with laser fiber according to claim 1, characterized in that: Laser fibers are fixed in the plurality of pipes 5, and one end of the laser fiber is connected to the sub-electrode needle.
7. The radiofrequency ablation needle with laser fiber according to claim 1, characterized in that: The electrode needle clamp block is slidably connected to the needle core, and the electrode wire contacts the electrode needle clamp block to make the needle core and the sub-electrode needle conductive.
8. The radiofrequency ablation needle with laser fiber according to claim 2, characterized in that: The condensed water in the condensed water chamber flows sequentially through the water injection port, the pipe six, the condensed water chamber, the pipe seven and the drain port.