Bimodal tumor ablation needle
By setting adjustment components and cooling components on the side of the ablation needle handle, the problem that the existing ablation needle cannot meet the small-pitch operation requirements is solved, convenient operation and high insulation performance are achieved, and surgical difficulty and cost are reduced.
Patent Information
- Application Number
- CN202420615182.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The existing ablation needle cannot meet the requirements of small spacing between needles when operating small-sized tumors, resulting in difficulty in operation.
A dual-modal tumor ablation needle is designed with an adjustment assembly located on the side of the handle, the exposed length of the needle is adjusted through a slide and elastic strip mechanism, and is equipped with a cooling assembly to improve insulation and dust-proof and waterproof performance.
It realizes convenient operation during small-sized tumor operation, enhances the electrical insulation performance of the handle, prevents coolant from entering the human body, and reduces the difficulty and cost of surgery.
Smart Images
Figure CN222285610U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ablation needles, and in particular to a dual-modality tumor ablation needle. Background Art
[0002] Currently, tumor ablation is the least invasive treatment option for some cancers. When performing tumor ablation, such as pulsed electric field, radiofrequency ablation, microwave ablation, etc., an ablation needle is used.
[0003] In the prior art, an insulating tube is provided on the outer sliding sleeve of the needle body, and a sliding mechanism is provided on the insulating tube. The operating part of the sliding mechanism passes through the top surface of the handle and extends out of the handle. The insulating tube can be slid by moving the position of the operating part, thereby adjusting the exposed length of the needle body. The design of the operating part protruding from the top surface of the handle makes the thickness of the handle part relatively large. For small-sized tumors, the minimum spacing between needles is 1 cm. Even if the handles of the two ablation needles are very close, they cannot meet the operation requirements of such a small spacing.
[0004] In view of this, it is necessary to propose a dual-modality tumor ablation needle to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a dual-mode tumor ablation needle, so as to improve the problem that the existing ablation needle cannot meet the operation requirement of small spacing between needles.
[0006] The utility model provides a dual-modal tumor ablation needle, comprising: a needle body, an insulating tube, a handle and an adjustment component, the handle is hollow inside, the insulating tube is slidably sleeved outside the needle body, one end of the needle body is arranged in the handle and the other end extends out of the handle, the insulating tube passes through the handle and is connected to the adjustment component, the adjustment component is slidably arranged on the side of the handle and connected to the insulating tube, and the exposed length of the needle body can be adjusted by moving the position of the adjustment component.
[0007] In a possible embodiment, a slide is formed in the handle near the side of the handle, the extension direction of the slide is consistent with the axial direction of the needle body, and the slide forms a pull-out opening on the side of the handle; the adjustment assembly includes an adjustment rod and a tube clamp, the adjustment rod is slidably arranged in the slide, an operating part is formed at the end of the adjustment rod, the operating part is located outside the pull-out opening, and the tube clamp is arranged on the insulating tube and connected to the adjustment rod.
[0008] In a possible embodiment, a plurality of grooves are provided at intervals on the opposite side walls of the slide; an opening is provided through the end of the adjusting rod away from the operating portion, and elastic clips are formed on both sides of the opening; a clip portion protruding outward is formed on one side of the elastic clip close to the groove, and the clip portion can be stuck in the groove.
[0009] In a possible embodiment, a length scale line is provided on the top surface of the handle corresponding to the operating portion, and the length scale line is used to indicate the exposed length of the needle body, and the scale values on the length scale line correspond one-to-one to the grooves.
[0010] In a possible embodiment, a guide groove is provided on the outer wall of the handle corresponding to the operating part, and an extension direction of the guide groove is consistent with an axial direction of the needle body. A guide member is provided on the operating part, and the guide member is slidably disposed in the guide groove.
[0011] In a possible embodiment, the dual-modal tumor ablation needle also includes a cooling component; the needle body includes an outer needle tube and an inner needle tube arranged in the outer needle tube, the inner needle tube includes a first end located outside the handle and a second end located inside the handle, the outer needle tube includes a puncture end located outside the handle and an open end located inside the handle, the first end of the inner needle tube is connected to the outer needle tube to form a cooling water path, the cooling component is respectively connected to the second end of the inner needle tube and the open end of the outer needle tube, and the cooling component is used to transport cooling liquid to the inner needle tube or the outer needle tube, and recover the outflowing cooling liquid.
[0012] In a possible embodiment, the cooling assembly includes a first pipeline, a second pipeline and a liquid supply assembly; one end of the first pipeline is connected to the second end of the inner needle tube and the other end is connected to the liquid supply assembly, one end of the second pipeline is connected to the open end of the outer needle tube, or one end of the first pipeline is connected to the second end of the inner needle tube, one end of the second pipeline is connected to the open end of the outer needle tube and the other end is connected to the liquid supply assembly.
[0013] In a possible embodiment, the ablation needle also includes an adapter seat disposed in the handle, the adapter seat includes a first channel and a second channel that are connected to each other and a third channel connected to the first channel, the first channel is adapted to the outer needle tube, and the second channel is adapted to the inner needle tube; the open end of the outer needle tube is sealed in the first channel, the inner needle tube extends out of the outer needle tube and passes through the first channel, the second end of the inner needle tube is sealed in the second channel, one end of the first pipeline is disposed on the adapter seat and connected to the second channel, and one end of the second pipeline is disposed on the adapter seat and connected to the third channel.
[0014] In a possible embodiment, the adapter includes a first connecting member, a second connecting member and a third connecting member, the end of the first connecting member is installed and connected to the end of the second connecting member, the first channel is provided on the first connecting member, the second channel is provided on the second connecting member, the third connecting member is provided on the side of the first connecting member, the third channel is provided on the third connecting member, and the first connecting member is also provided with a fourth channel connected to the first channel and the third channel.
[0015] In a possible embodiment, the ablation needle also includes a thermocouple cable and a first wire, one end of the thermocouple cable is connected to the inner wall of the puncture end of the outer needle tube, and the other end passes through the inner needle tube and is connected to the first wire, and the first wire is connected to the host at one end away from the thermocouple cable; and / or, it also includes a second wire, the outer wall of the needle body is provided with a conductive part, one end of the second wire is connected to the conductive part, and the other end is connected to the host.
[0016] The beneficial effects of the dual-modal tumor ablation needle provided by the utility model are as follows: the adjustment component is located on the side of the handle, which reduces the thickness of the handle and enables the operator to operate more conveniently when handling small-sized tumors. The gap at the adjustment component is shortened to the size of a vertical pull-out opening, which enhances the electrical insulation performance of the handle. The cooling component cools the needle body during the ablation process, and the closed cooling water circuit prevents the coolant from entering the human body. In addition, the insulation performance and dust and water resistance of the ablation needle handle are also improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the dual-modality tumor ablation needle of the present invention.
[0018] Figure 2 It is a cross-sectional view of the dual-modality tumor ablation needle of the present invention.
[0019] Figure 3 for Figure 2 A partial enlarged schematic diagram of area A in the middle.
[0020] Figure 4 This is a cross-sectional view of the installation location of the adjustment component in the dual-modality tumor ablation needle of the utility model.
[0021] Figure 5 for Figure 4 Cross-sectional view along the BB direction.
[0022] Figure 6 It is a side view of the dual-modality tumor ablation needle of the present invention.
[0023] Figure 7 It is a partial cross-sectional view of the needle body of the dual-modality tumor ablation needle of the utility model.
[0024] Figure 8 This is a cross-sectional view of the cooling component and the needle body in the dual-modality tumor ablation needle of the utility model.
[0025] Fig. 9 for Figure 8 A partial enlarged schematic diagram of the C area in the middle.
[0026] Description of reference numerals: needle body 100; outer needle tube 110; puncture end 111; open end 112; inner needle tube 120; first end 121; second end 122; insulating tube 200; handle 300; first horizontal section 310; inclined section 320; pull-out opening 321; second horizontal section 330; guide groove 331; slideway 301; groove 302; adjustment assembly 400; adjustment rod 410; opening 411; elastic clip strip 412; clip block 413; operating part 414; indicator line 4141; guide member 420; tube Clamp 430; clamp block 431; connecting plate 432; fixing rod 433; length scale line 500; cooling assembly 600; first pipeline 610; second pipeline 620; first Luer connector 630; second Luer connector 640; adapter 700; first connector 710; first channel 711; fourth channel 712; fifth channel 713; second connector 720; second channel 721; third connector 730; third channel 731; thermocouple cable 810; first wire 820; second wire 830. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] In view of the problems existing in the prior art, the embodiments of the present invention provide a dual-modality tumor ablation needle. Figures 1 to 3The dual-mode tumor ablation needle includes: a needle body 100, an insulating tube 200, a handle 300 and an adjustment component 400. The handle 300 is hollow inside, the insulating tube 200 is slidably sleeved outside the needle body 100, and the insulating tube 200 is tightly sleeved outside the needle body 100. The needle body 100 and the insulating tube 200 are tightly matched, and the gap is extremely small, so that no tissue, especially the lesion tissue, will enter the gap between the needle body 100 and the insulating tube 200 during the puncture process. The insulating tube 200 has sufficient insulation performance and can isolate the needle body 100 from the human body in any mode to ensure that energy is not output to the human body from an unexpected path. One end of the needle body 100 is arranged in the handle 300 and connected to the host, and the other end extends out of the handle 300. The other end of the needle body 100 is a sharp needle tip, and the outer wall of the needle tip has a chamfer, which can reduce resistance during the puncture process and protect the insulating tube 200 from bending and deformation. The insulating tube 200 passes through the handle 300 and is connected to the adjusting component 400 . The adjusting component 400 is slidably disposed on the side of the handle 300 and is connected to the insulating tube 200 . By moving the position of the adjusting component 400 , the exposed length of the needle body 100 can be adjusted.
[0029] In this embodiment, the host can realize dual-mode switching of pulsed electric field and radio frequency energy on a single needle body 100, and different modes can be switched for tumors of different sizes, reducing the difficulty and risk of surgery. The adjustment component 400 is slidably arranged on the side of the handle 300, rather than protruding from the top surface of the handle 300, thereby reducing the overall thickness of the handle 300. During operation, the operation requirements of a small distance between needles can be met, and even if the handles 300 of two tumor ablation needles are close to each other, the adjustment component 400 located on the side can be conveniently operated.
[0030] Better, see Figure 6 , the thickness of the handle 300 is less than or equal to 1 cm. The material, structure, and pressure resistance of the needle body 100 meet the requirements of the electrical and mechanical properties of the dual mode. The adjustment component 400 is connected to one end of the insulating tube 200 located in the handle 300. The handle 300 has a highly insulating shell that can isolate the output energy of the dual mode to avoid harming the user.
[0031] In a preferred embodiment, see Figures 3 to 5A slideway 301 is formed in the handle 300 near the side of the handle 300. The extension direction of the slideway 301 is consistent with the axial direction of the needle body 100. The slideway 301 forms a pull-out opening 321 on the side of the handle 300. The pull-out opening 321 is perpendicular to the axial direction of the needle body 100. The adjustment assembly 400 includes an adjustment rod 410 and a tube clamp 430. The adjustment rod 410 is slidably arranged in the slideway 301. An operating portion 414 is formed at the end of the adjustment rod 410. The operating portion 414 is located outside the pull-out opening 321. The cross-sectional size of the operating portion 414 is larger than the cross-sectional size of the pull-out opening 321. The tube clamp 430 is arranged on the insulating tube 200 and connected to the adjustment rod 410. Preferably, the tube clamp 430 is arranged at one end of the insulating tube 200 located in the handle 300. The tube clamp 430 includes a pair of clamping blocks 431 symmetrically arranged on both sides of the insulating tube 200 and a connecting plate 432 arranged on a pair of clamping plates. A fixing rod 433 is provided on the connecting plate 432. The fixing rod 433 is connected to the adjusting rod 410 at one end away from the connecting plate 432.
[0032] In this embodiment, in the prior art, a long slide groove is provided on the top surface of the handle 300 for installing the sliding mechanism. Since the sliding mechanism is connected to the needle body 100, the slide groove is usually connected to the internal space of the handle 300. The movement of the sliding mechanism causes the internal space of the handle 300 to be exposed, which reduces the electrical insulation performance. In this solution, the slideway 301 is provided inside the handle 300, and the adjustment rod 410 passes through the draw-out opening 321. The gap between the adjustment rod 410 and the draw-out opening 321 is very small. By cooperating with the adjustment rod 410 and the draw-out opening 321, the internal space of the handle 300 is prevented from being exposed, and the handle 300 has good sealing performance, which enhances the electrical insulation performance of the handle 300. Moreover, this design method can make the ablation needle structure more compact.
[0033] In a preferred embodiment, see Figure 5 , a plurality of grooves 302 are provided at intervals on the opposite side walls of the slideway 301, the adjustment rod 410 is adapted to the slideway 301, an end of the adjustment rod 410 away from the operating portion 414 is provided with an opening 411, and elastic clips 412 are formed on both sides of the opening 411, and a block portion 413 protruding outward is formed on the side of the elastic clip 412 close to the groove 302, and the block portion 413 can be stuck in the groove 302. Specifically, a protrusion is formed between two adjacent grooves 302, and the grooves 302 and the protrusions on the two side walls of the slideway 301 are symmetrically arranged.
[0034] In this embodiment, the adjustment rod 410 is moved along the slide 301 by applying a pushing force or a pulling force to the operating part 414. When the elastic clip 412 passes through the non-groove 302 position of the slide 301, it is squeezed and deformed and contracted; when the block part 413 moves to the groove 302, the elastic clip 412 resumes its expansion, and the block part 413 is snap-connected with the groove 302 to achieve locking of the adjustment component 400 and the insulating tube 200. The locking force can ensure that the insulating tube 200 will not be relatively displaced with the needle body 100 during the puncture process.
[0035] In a specific embodiment, see Figure 1 , the top surface of the handle 300 is provided with a length scale line 500 corresponding to the operating part 414, and the length scale line 500 is used to indicate the exposed length of the needle body 100. The scale value on the length scale line 500 corresponds to the groove 302 one by one, and each groove 302 position corresponds to the distance between the insulating tube 200 and the needle tip, that is, the current length of the needle body 100 not covered by the insulating tube 200. Specifically, an indicator line 4141 is provided in the middle of the operating part 414, and the scale value corresponding to the indicator line 4141 is the current actual exposed length of the needle body 100. When the needle body 100 has been punctured, the current exposed length of the needle body 100 can be accurately obtained, and the exposed length of the needle body 100 can be adjusted with precise control.
[0036] In a specific embodiment, see Figure 3 , Figure 4 and Figure 6 A guide groove 331 is provided on the outer wall of the handle 300 corresponding to the operating part 414 , and the extending direction of the guide groove 331 is consistent with the axial direction of the needle body 100 . A guide member 420 is provided on the operating part 414 , and the guide member 420 is slidably disposed in the guide groove 331 . Preferably, one side of the handle 300 on which the adjustment rod 410 is provided includes a horizontally arranged first horizontal section 310, an inclined section 320 arranged at an angle, and a horizontally arranged second horizontal section 330, the inclined section 320 is connected between the first horizontal section 310 and the second horizontal section 330, the adjustment rod 410 is located on the inner side of the first horizontal section 310, the pull-out opening 321 is provided on the inclined section 320, the guide groove 331 is provided on the second horizontal section 330, the first horizontal section 310 is farther away from the center line of the handle 300 than the operating part 414, that is, the first horizontal section 310 and the inclined section 320 protrude from the second horizontal section 330, which has a shielding effect on the operating part 414, so that the operating part 414 is not easily operated by mistake.
[0037] In a preferred embodiment, see Figures 7 to 9The ablation needle also includes a cooling component 600. The needle body 100 includes an outer needle tube 110 and an inner needle tube 120 arranged in the outer needle tube 110. The inner needle tube 120 includes a first end 121 located outside the handle 300 and a second end 122 located inside the handle 300. The outer needle tube 110 includes a puncture end 111 located outside the handle 300 and an open end 112 located inside the handle 300. The first end 121 of the inner needle tube 120 is connected to the outer needle tube 110 to form a cooling water path. The cooling component 600 is respectively connected to the second end 122 of the inner needle tube 120 and the open end 112 of the outer needle tube 110. The cooling component 600 is used to transport cooling liquid to the inner needle tube 120 or the outer needle tube 110, and to recover the outflowing cooling liquid.
[0038] In the embodiment, the tube part of the needle body 100 is a double-tube structure, and the inner needle tube 120 and the outer needle tube 110 together form a cooling water path near the needle tip. The cooling water path is completely sealed by the needle body 100, has high pressure-resistant sealing, and will not discharge the coolant in the cooling water path into the human body. The structure of the inner and outer tubes is designed to minimize the overall fluid pressure. The cooling water path uses a cooling liquid, such as injection water, ultrapure water, deionized water, physiological saline, fluoride liquid and other media, to cool the needle body 100 during the ablation process, ensuring that the temperature of the ablation area and the temperature of the needle body 100 during ablation will not cause unexpected burns to the patient.
[0039] In some embodiments, see Figure 8 and Fig. 9 The cooling assembly 600 includes a first pipeline 610, a second pipeline 620 and a liquid supply assembly (not shown in the figure), one end of the first pipeline 610 is connected to the second end 122 of the inner needle tube 120 and the other end is connected to the liquid supply assembly, one end of the second pipeline 620 is connected to the open end 112 of the outer needle tube 110, or one end of the first pipeline 610 is connected to the second end 122 of the inner needle tube 120, one end of the second pipeline 620 is connected to the open end 112 of the outer needle tube 110 and the other end is connected to the liquid supply assembly. Specifically, the liquid supply assembly includes a water pump and a storage box. The first pipeline 610 and the second pipeline 620 are isolated from each other. A first Luer connector 630 is provided at one end of the first pipeline 610 away from the inner needle tube 120, and a second Luer connector 640 is provided at one end of the second pipeline 620 away from the outer needle tube 110. In this solution, the first pipeline 610 can be used as the liquid supply pipeline, and the second pipeline 620 can also be used as the liquid supply pipeline, which is not limited here. The discharged coolant can be cooled and then connected to the liquid supply component to achieve the recycling of the coolant. It can also be directly discarded.
[0040] In yet another embodiment, see Fig. 9The ablation needle also includes an adapter 700 disposed in the handle 300. The adapter 700 includes a first channel 711 and a second channel 721 that are connected to each other, and a third channel 731 that is connected to the first channel 711. The first channel 711 is adapted to the outer needle tube 110, and the second channel 721 is adapted to the inner needle tube 120. The open end 112 of the outer needle tube 110 is sealed in the first channel 711 by a sealant, the inner needle tube 120 extends out of the outer needle tube 110 and passes through the first channel 711, and the second end 122 of the inner needle tube 120 is sealed in the second channel 721 by a sealant. One end of the first pipeline 610 is disposed on the adapter 700 and is connected to the second channel 721, and one end of the second pipeline 620 is disposed on the adapter 700 and is connected to the third channel 731. Preferably, the first channel 711 leaves a flow area corresponding to the third channel 731 to circulate the cooling liquid. In this embodiment, the outer needle tube 110 is sealed and fixed in the first channel 711, and the inner needle tube 120 is sealed and fixed in the second channel 721. The outer needle tube 110 and the inner needle tube 120 are fixed by the adapter 700, and the connection between the needle body 100 and the cooling assembly 600 is realized.
[0041] In a specific embodiment, see Fig. 9 , the adapter 700 includes a first connector 710, a second connector 720 and a third connector 730, the end of the first connector 710 is sealed and installed with the end of the second connector 720, the first channel 711 is provided on the first connector 710, the second channel 721 is provided on the second connector 720, the third connector 730 is sealed and provided on the side of the first connector 710, the third channel 731 is provided on the third connector 730, and the first connector 710 is further provided with a fourth channel 712 connected with the first channel 711 and the third channel 731. Taking the first pipeline 610 as a liquid supply pipeline as an example, the coolant is input into the second channel 721 through the first pipeline 610, passes through the inner needle tube 120, the outer needle tube 110, the flow area of the first channel 711, the fourth channel 712, the third channel 731 in sequence, and then discharged from the second pipeline 620.
[0042] Better, see Fig. 9 The first connecting piece 710 is also provided with a fifth channel 713 adapted to the inner needle tube 120. The fifth channel 713 is connected to the first channel 711 and the second channel 721 and is located between the first channel 711 and the second channel 721. The inner needle tube 120 extends out of the outer needle tube 110, passes through the first channel 711 and the fifth channel 713, and the inner needle tube 120 is sealed in the fifth channel 713 by a sealant.
[0043] In one possible embodiment, see Figure 3 and Fig. 9, the ablation needle also includes a thermocouple cable 810 and a first wire 820, one end of the thermocouple cable 810 is connected to the inner wall of the puncture end 111 of the outer needle tube 110, and the other end passes through the inner needle tube 120 and is connected to the first wire 820, and the first wire 820 is connected to the host at one end away from the thermocouple cable 810; and / or, the ablation needle also includes a second wire 830, the outer wall of the needle body 100 is provided with a conductive part, one end of the second wire 830 is connected to the conductive part, and the other end is connected to the host. The thermocouple cable 810 has a temperature monitoring function, which realizes real-time monitoring of the temperature of the needle body 100, thereby effectively preventing the needle body 100 from being overheated and damaging normal tissue.
[0044] In this embodiment, when the ablation needle is in pulse mode, the exposed length of the needle body 100 is adjusted by moving the position of the adjustment component 400 to adapt to tumor tissues of various sizes, without the need to replace the ablation needle. At the same time, the insulating tube 200 plays an isolating and protective role to prevent the exposed needle body 100 from contacting other normal tissues outside the tumor tissue and causing damage. When the ablation needle is in radio frequency mode, the cooling component 600 is used to cool the needle body 100 and the tumor tissue near the needle body 100.
[0045] The technical effects of the dual-modality tumor ablation needle of the utility model are described in detail below.
[0046] 1. The needle body 100 adopts an insulation and water channel design that is compatible with pulsed electric fields and radio frequencies, and can meet the needs of using a single type of electrode needle to complete treatment in multimodal surgery. It expands the surgical capabilities, enhances the feasibility, safety, and effectiveness of complex diseases, and increases convenience.
[0047] 2. The installation structure of the adjustment rod 410 of the handle 300 will not cause a sliding gap in the handle 300, thereby preventing the non-insulated portion of the needle body 100 located in the handle 300 from being exposed to the outside, thereby ensuring safety.
[0048] 3. Dual-modality compatibility: adding radio frequency to pulse ablation therapy can avoid needle tract transfer during needle withdrawal. Adding pulsed electric field to radio frequency therapy can enhance the boundary effect.
[0049] 4. The adjustment rod 410 is disposed inside the handle 300 , and the gap between the adjustment rod 410 and the draw-out opening 321 is very small, so that the exposed area of the handle 300 does not change during the pushing and pulling process, thereby simplifying the structure and enhancing the compactness of the structure.
[0050] 5. The adjustable design of the insulating tube 200 increases the convenience of the test, avoids the operation of selecting electrodes in specific exposure areas according to the disease or replacing electrodes during the operation, and reduces the cost of the operation.
[0051] Although the embodiments of the utility model are described in detail above, it is obvious to those skilled in the art that various modifications and changes can be made to these embodiments. However, it should be understood that such modifications and changes are within the scope and spirit of the utility model described in the claims. Moreover, the utility model described herein may have other embodiments and may be implemented or realized in a variety of ways. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the field to which the utility model belongs. The words "including" and the like used herein mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.
Claims
1. A dual-modality tumor ablation needle, characterized in that: include: A needle body, an insulating tube, a handle and an adjusting component, wherein the handle is hollow inside, the insulating tube is slidably mounted outside the needle body, one end of the needle body is disposed inside the handle and the other end extends outside the handle, the insulating tube passes through the handle and is connected to the adjusting component, the adjusting component is slidably mounted on the side of the handle and is connected to the insulating tube, and the exposed length of the needle body can be adjusted by moving the position of the adjusting component.
2. The dual-modality tumor ablation needle according to claim 1, characterized in that: A slideway is formed in the handle near the side of the handle, the extension direction of the slideway is consistent with the axial direction of the needle body, and the slideway forms a pull-out opening on the side of the handle; The adjustment assembly includes an adjustment rod and a pipe clamp. The adjustment rod is slidably arranged in the slideway. An operating portion is formed at the end of the adjustment rod. The operating portion is located outside the pull-out port. The pipe clamp is arranged on the insulating tube and connected to the adjustment rod.
3. The dual-modality tumor ablation needle according to claim 2, characterized in that: The two opposite side walls of the slideway are provided with a plurality of grooves at intervals; An opening is formed through one end of the adjusting rod away from the operating part, and elastic clamping strips are formed on both sides of the opening. A clamping block portion protruding outward is formed on one side of the elastic clamping strip close to the groove, and the clamping block portion can be clamped in the groove.
4. The dual-modality tumor ablation needle according to claim 3, characterized in that: A length scale line is provided on the top surface of the handle corresponding to the operating portion, and the length scale line is used to indicate the exposed length of the needle body, and the scale values on the length scale line correspond to the grooves one by one.
5. The dual-modality tumor ablation needle according to claim 2, characterized in that: A guide groove is provided on the outer side wall of the handle corresponding to the operating part, and the extending direction of the guide groove is consistent with the axial direction of the needle body. A guide piece is provided on the operating part, and the guide piece is slidably arranged in the guide groove.
6. The dual-modality tumor ablation needle according to claim 1, characterized in that: Also included is a cooling assembly; The needle body includes an outer needle tube and an inner needle tube arranged in the outer needle tube, the inner needle tube includes a first end located outside the handle and a second end located inside the handle, the outer needle tube includes a puncture end located outside the handle and an open end located inside the handle, the first end of the inner needle tube is connected to the outer needle tube to form a cooling water path, the cooling component is respectively connected to the second end of the inner needle tube and the open end of the outer needle tube, and the cooling component is used to transport cooling liquid to the inner needle tube or the outer needle tube, and recover the flowing cooling liquid.
7. The dual-modality tumor ablation needle according to claim 6, characterized in that: The cooling assembly includes a first pipeline, a second pipeline and a liquid supply assembly; One end of the first pipeline is connected to the second end of the inner needle tube and the other end is connected to the liquid supply assembly, and one end of the second pipeline is connected to the open end of the outer needle tube, or, One end of the first pipeline is connected to the second end of the inner needle tube, one end of the second pipeline is connected to the open end of the outer needle tube and the other end is connected to the liquid supply assembly.
8. The dual-modality tumor ablation needle according to claim 7, characterized in that: The adapter is also provided in the handle, the adapter comprising a first channel and a second channel connected to each other and a third channel connected to the first channel, the first channel is adapted to the outer needle tube, and the second channel is adapted to the inner needle tube; The open end of the outer needle tube is sealed in the first channel, the inner needle tube extends out of the outer needle tube and passes through the first channel, the second end of the inner needle tube is sealed in the second channel, one end of the first pipeline is arranged on the adapter and communicated with the second channel, and one end of the second pipeline is arranged on the adapter and communicated with the third channel.
9. The dual-modality tumor ablation needle according to claim 8, characterized in that: The adapter includes a first connecting member, a second connecting member and a third connecting member, the end of the first connecting member is installed and connected to the end of the second connecting member, the first channel is arranged on the first connecting member, the second channel is arranged on the second connecting member, the third connecting member is arranged on the side of the first connecting member, the third channel is arranged on the third connecting member, and the first connecting member is also provided with a fourth channel connected to the first channel and the third channel.
10. The dual-modality tumor ablation needle according to claim 6, characterized in that: It also includes a thermocouple cable and a first wire, wherein one end of the thermocouple cable is connected to the inner wall of the puncture end of the outer needle tube, and the other end passes through the inner needle tube and is connected to the first wire, and the first wire is connected to the host away from one end of the thermocouple cable; and / or, It also includes a second wire. The outer wall of the needle body is provided with a conductive part. One end of the second wire is connected to the conductive part, and the other end is connected to the host.