Microwave ablation needle suitable for vessel malformation of children

Abstract

The utility model relates to the technical field of microwave ablation needles, and discloses a microwave ablation needle suitable for children vessel malformation, which comprises a microwave ablation needle body, a fixed seat is fixedly connected to the outer side of the right end of the microwave ablation needle body, a replacement mechanism is mounted on the microwave ablation needle body, the replacement mechanism is detachably connected with a female seat mechanism, and the female seat mechanism is detachably connected with the microwave ablation needle body. By means of the replacement mechanism and the female seat mechanism, if the same controller is needed, the microwave ablation needle body can be replaced according to needs, the microwave ablation needle body is disposable, the controller is a common part, and when different controllers are needed, the whole replacement mechanism with the microwave ablation needle body is replaced. At the moment, the whole replacement mechanism with the microwave ablation needle body is disposable, the microwave ablation needle body can be independently replaced in the replacement mechanism in the two modes, cost is reduced, children of different age groups and different physical conditions can use the microwave ablation needle more easily, and replacement operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave ablation needles, in particular to a microwave ablation needle suitable for treating vascular malformations in children. Background Art

[0002] Microwave ablation needles are a commonly used therapeutic tool in the medical field, used to treat conditions such as tumors and arrhythmias. Their technical parameters are crucial to ensuring treatment efficacy and safety.

[0003] Compared with radiofrequency ablation, microwave ablation takes only half the time of multipolar radiofrequency ablation to ablate tumors of the same size. Furthermore, radiofrequency ablation requires multiple deployment and retraction of the umbrella-shaped electrode, significantly increasing the surgical time. Therefore, microwave ablation significantly shortens the surgical time compared to radiofrequency ablation, effectively reducing anesthesia and other surgical risks.

[0004] Microwave ablation causes the dipole molecules in the tissue to move violently and generate bioheat energy through friction, which in turn causes the lesion tissue to coagulate, dehydrate and necrotize.

[0005] Microwave ablation has been improved and developed. Currently, a single needle of a 2450 MHz instrument can ablate tumors larger than 5 cm, and a single needle of a 915 MHZ instrument can ablate up to 8 cm.

[0006] Traditional microwave ablation needles suitable for pediatric vascular malformations are firstly used because they are disposable and need to be replaced with new ones for use by other patients. The overall replacement cost is high and the replacement operation is relatively cumbersome. Secondly, due to the different ages and physical conditions of children, their ability to withstand treatment varies, and different controllers are required to control the output of different powers to different microwave ablation needles. The parts of the generator, external cable, and handle that do not need to be replaced are inconvenient to disassemble and connect with the replacement parts, and the operation is cumbersome. Utility Model Content

[0007] The purpose of the present utility model is to provide a microwave ablation needle suitable for pediatric vascular malformations, so as to solve the problem in the prior art mentioned in the above background art that it is inconvenient to replace the ablation needle body and the controller.

[0008] To achieve the above objectives, the present invention provides the following technical solutions: a microwave ablation needle suitable for pediatric vascular malformations, comprising a microwave ablation needle body, a fixing seat fixedly connected to the outer side of the right end of the microwave ablation needle body, a replacement mechanism mounted on the microwave ablation needle body, and a female seat mechanism detachably connected to the replacement mechanism;

[0009] The replacement mechanism includes a housing assembly, a controller, and a connecting assembly. The controller is installed inside the housing assembly, and the connecting assembly is installed inside the housing assembly.

[0010] The female seat mechanism includes a connecting shell, a limiting assembly, a supply assembly and a positioning assembly. The limiting assembly is clamped under the shell assembly, the connecting shell is installed at the bottom end of the limiting assembly, the supply assembly is installed on the inside of the connecting shell, and the positioning assembly is installed on the inside of the connecting shell.

[0011] Furthermore, the shell assembly includes a shell A, a card strip A, a shell B, a card strip B, a limit block and a card block A. The outer side of the fixed seat is slidably connected to the shell A, the front end face of the shell A is fixedly connected to the card strip A, the outer side of the card strip A is slidably connected to the shell B, the front end face of the shell B is fixedly connected to the card strip B, the limit block is provided on the right side of the fixed seat, the rear end face of the limit block is fixedly connected to the shell A, the inner side of the shell A is fixedly connected to the card strip A, the left end of the shell A and the left end of the shell B are provided with placement holes that are symmetrically arranged in the front and back, the outer side of the fixed seat and the inner side wall of the placement hole are fitted together, the bottom end of the shell A and the bottom end of the shell B are provided with splicing holes that are symmetrically arranged in the front and back, the connecting assembly is provided on the inner side of the splicing hole, and the left ends of the inner side wall of the splicing hole are fixedly connected to the card block A.

[0012] Furthermore, the connecting assembly includes a baffle rod, a splicing rod, a contact head and a connecting line A. The baffle rod is fixedly connected to the inner side of the shell A, the bottom end of the baffle rod is fixedly connected to the two splicing rods, the bottom end of the splicing rod is fixedly connected to the contact head, the top end of the contact head is fixedly connected to the connecting line A, the top end of the connecting line A is fixedly connected to the controller, the connecting line A passes through the surface of the splicing rod, and a positioning groove is opened on the right side of the splicing rod.

[0013] Furthermore, the limiting assembly includes an insertion seat and a block B. The top of the connecting shell is fixedly connected to the insertion seat, the left and right ends of the insertion seat are fixedly connected to the block B, and the outer side of the block B is slidably connected to the block A.

[0014] Furthermore, a connecting hole is provided on the inner side of the insertion seat, and the outer side of the splicing rod is slidably connected to the connecting hole, and the connecting hole passes through the surface of the connecting shell.

[0015] Furthermore, two groups of the supply item components are installed on the inner side of the bottom end of the connecting shell, and the two groups of the supply item components are symmetrically arranged on the left and right. The supply item components include an external wire, a mounting shell, a connecting wire B, a contact seat and a mounting block. The inner side of the bottom end of the connecting shell is fixedly connected to the mounting shell, the bottom end of the mounting shell is fixedly connected to the external wire, the top end of the mounting shell is fixedly connected to the connecting wire B, the top end of the connecting wire B is fixedly connected to the contact seat, the bottom end of the contact seat is fixedly connected to the mounting block, and one side of the mounting block is fixedly connected to the connecting shell.

[0016] Furthermore, the movement trajectory of the contact head is linear, and the contact seat is arranged on the movement trajectory of the contact head.

[0017] Furthermore, the positioning assembly includes a sliding sleeve, a sliding rod, a positioning block, a connecting seat, a rotating block and a threaded rod. The sliding sleeve is fixedly connected to the inner side of the left end of the connecting shell, the sliding rod is slidably connected to the inner side of the sliding sleeve, the rear end face of the sliding rod is fixedly connected to the positioning block, the inner side of the right end of the connecting shell is fixedly connected to the connecting seat, a rotating groove is provided on the inner side of the connecting seat, the rotating block is rotatably connected to the inner side wall of the rotating groove, the threaded rod is fixedly connected to the inner side of the rotating block, and a threaded hole is provided on the outer side of the sliding rod, and the inner side wall of the threaded hole is threadedly connected to the threaded rod.

[0018] Furthermore, the inner side wall of the sliding sleeve is square, the sliding rod is square strip-shaped, the movement trajectory of the positioning block is straight, the positioning groove of the splicing rod is arranged on the movement trajectory of the positioning block, and the outer side of the positioning block is slidably connected to the inner side wall of the positioning groove.

[0019] Furthermore, a connecting groove is provided on the inner side of the connecting seat, which passes through the surfaces of the left and right ends of the connecting seat, and the threaded rod is arranged on the inner side of the connecting groove. An adjustment groove is provided on the right end of the connecting shell, which is arranged in a "T" shape, passes through the surface of the connecting shell, and the threaded rod is arranged on the surface of the adjustment groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The utility model provides a replacement mechanism and a mother seat mechanism. If the same controller is needed, the microwave ablation needle body can be replaced as needed. The microwave ablation needle body is disposable and the controller is a common part. When a different controller is needed, the replacement mechanism with the microwave ablation needle body is replaced as a whole. At this time, the replacement mechanism with the microwave ablation needle body as a whole is used as a disposable. Both methods can replace the microwave ablation needle body separately in the replacement mechanism, which reduces costs, makes it easier to meet the use of children of different age groups and different physical conditions, and facilitates replacement operations. The total control connected on the outside of the external wire cooperates with different controllers to more accurately control the power output of the controller and other conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a microwave ablation needle suitable for children's vascular malformations in the present invention;

[0023] Figure 2 This is a schematic diagram of the installation structure of a replacement mechanism and a female seat mechanism of a microwave ablation needle suitable for pediatric vascular malformations in the present invention;

[0024] Figure 3 This is a schematic diagram of the unfolded installation structure of a shell assembly of a microwave ablation needle suitable for pediatric vascular malformations according to the present invention;

[0025] Figure 4 This is a schematic diagram of the installation structure of a connection assembly of a microwave ablation needle suitable for children with vascular malformations according to the present invention;

[0026] Figure 5 This is a schematic diagram of the installation structure of a limiter assembly of a microwave ablation needle suitable for children with vascular malformations according to the present invention;

[0027] Figure 6 This is a schematic diagram of the installation structure of a supply assembly of a microwave ablation needle suitable for pediatric vascular malformations according to the present invention;

[0028] Figure 7 This is a schematic diagram of the installation structure of a positioning assembly of a microwave ablation needle suitable for vascular malformations in children according to the present invention;

[0029] In the picture:

[0030] 1. Microwave ablation needle body; 11. Fixing seat;

[0031] 2. Replacement mechanism; 21. Housing assembly; 211. Housing A; 212. Card strip A; 213. Housing B; 214. Card strip B; 215. Limit block; 216. Card block A; 22. Controller; 23. Connecting assembly; 231. Stop rod; 232. Splicing rod; 233. Contact head; 234. Connecting wire A

[0032] 3. Female seat mechanism; 31. Connecting shell; 32. Limiting assembly; 321. Inserting seat; 322. Block B; 33. Supply assembly; 331. Mounting shell; 332. Connecting wire B; 333. Contact seat; 334. Mounting block; 34. Positioning assembly; 341. Sliding sleeve; 342. Sliding rod; 343. Positioning block; 344. Connecting seat; 345. Rotating block; 346. Threaded rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] See also Figure 1-Figure 7The present invention provides a technical solution: a microwave ablation needle suitable for pediatric vascular malformations, comprising a microwave ablation needle body 1, wherein the outer side of the right end of the microwave ablation needle body 1 is fixedly connected to the fixing seat 11, and the replacement mechanism 2 is installed on the microwave ablation needle body 1, and the replacement mechanism 2 is detachably connected to the female seat mechanism 3;

[0035] The replacement mechanism 2 includes a housing assembly 21, a controller 22 and a connecting assembly 23. The controller 22 is installed inside the housing assembly 21, and the connecting assembly 23 is installed inside the housing assembly 21.

[0036] The female seat mechanism 3 includes a connecting shell 31, a limiting component 32, a supply component 33 and a positioning component 34. The limiting component 32 is clamped at the bottom of the shell component 21, the connecting shell 31 is installed at the bottom end of the limiting component 32, the supply component 33 is installed on the inner side of the connecting shell 31, and the positioning component 34 is installed on the inner side of the connecting shell 31. The device is convenient for replacing the microwave ablation needle body 1, and the replacement mechanism 2 can also be replaced as a whole. The microwave ablation needle body 1 using the same controller 22 can be replaced in the replacement mechanism 2. Replacement. When using a different controller 22, the replacement mechanism 2 is replaced as a whole on the mother seat mechanism 3. It can be understood that if the same controller 22 is needed, the microwave ablation needle body 1 can be replaced as needed. The microwave ablation needle body 1 is disposable, and the controller 22 is a common part. When a different controller 22 is needed, the replacement mechanism 2 with the microwave ablation needle body 1 is replaced as a whole. At this time, the replacement mechanism 2 with the microwave ablation needle body 1 is used as a whole for disposable use. Both methods can replace the microwave ablation needle body 1 separately in the replacement mechanism 2 to reduce costs.

[0037] The shell assembly 21 includes a shell A211, a card strip A212, a shell B213, a card strip B214, a limit block 215 and a card block A216. The outer side of the fixed seat 11 is slidably connected to the shell A211, the front end face of the shell A211 is fixedly connected to the card strip A212, the outer side of the card strip A212 is slidably connected to the shell B213, the front end face of the shell B213 is fixedly connected to the card strip B214, the right side of the fixed seat 11 is provided with the limit block 215, the rear end face of the limit block 215 is fixedly connected to the shell A211, the inner side of the shell A211 is fixedly connected to the card strip A212, and the left end of the shell A211 and the left end of the shell B213 are provided with a front-to-back symmetrical A placement hole is set, and the outer side of the fixing seat 11 fits with the inner side wall of the placement hole. The bottom end of the shell A211 and the bottom end of the shell B213 are provided with splicing holes that are symmetrically arranged in the front and back. The connecting component 23 is set on the inner side of the splicing hole. The left ends of the inner side wall of the splicing hole are fixedly connected with the card block A216. The controller 22 is used to assist in controlling the output power of the microwave ablation needle body 1. If the controller 22 to be used is different, the overall replacement mechanism 2 is replaced. The end of the threaded rod 346 is rotated by a screwdriver to drive the threaded rod 346 to rotate. The threaded rod 346 rotates in the connecting seat 344 through the turning block 345. The turning block 345 is limited by the connecting seat 344 to keep the position of the threaded rod 346 unchanged. The square of the sliding rod 342 The arrangement makes the outer side of the slide rod 342 fit with the inner wall of the sliding sleeve 341 to prevent the slide rod 342 from rotating at will, and then the threaded rod 346 cooperates with the thread of the splicing rod 232 to make the slide rod 342 move to the right, and the slide rod 342 drives the positioning block 343 to move to the right, and the positioning block 343 slides out of the positioning groove of the splicing rod 232, releasing the limit on the splicing rod 232, and then the shell assembly 21 and the connecting shell 31 are pulled in reverse respectively to separate the connecting shell 31 and the shell assembly 21, and the splicing rod 232 is pulled out of the connecting shell 31 and the insertion seat 321, and then a new replacement mechanism 2 with a microwave ablation needle body 1 is replaced, and then the new splicing rod 232 is passed through the insertion seat 321 and inserted into the connecting shell 31, and the contact head 23 is 3 is fitted with the contact seat 333. At this time, the block A216 on the shell A211 is placed under the block B322, so that the block B322 is engaged with the block A216 to limit the position, so that the engagement of the block B322 and the block A216 can also be understood as a similar interference fit. Then, the end of the threaded rod 346 is rotated in the adjustment groove by a screwdriver to drive the slide bar 342 to move to the left, and the slide bar 342 drives the positioning block 343 to move to the left. The two positioning blocks 343 are respectively inserted into the positioning grooves of the two splicing rods 232. The positioning blocks 343 are fitted with the corresponding positioning grooves. The positioning blocks 343 limit the splicing rods 232, further ensuring the stability of the connection between the connecting shell 31 and the shell assembly 21, and keeping the contact head 233 fitted with the contact seat 333.Complete the replacement of the replacement mechanism 2 as a whole, and make adjustments as needed.

[0038] The connecting assembly 23 includes a blocking rod 231, a splicing rod 232, a contact head 233 and a connecting line A234. The blocking rod 231 is fixedly connected to the inner side of the shell A211. The bottom end of the blocking rod 231 is fixedly connected to two of the splicing rods 232. The bottom end of the splicing rod 232 is fixedly connected to the contact head 233. The top of the contact head 233 is fixedly connected to the connecting line A234. The top of the connecting line A234 is fixedly connected to the controller 22. The connecting line A234 passes through the surface of the splicing rod 232. A positioning groove is provided on the right side of the splicing rod 232. A new replacement mechanism 2 with a microwave ablation needle body 1 is replaced, and then the new splicing rod 232 is passed through the insertion seat 321 and inserted into the connecting shell 31. The contact head 233 is connected to the contact head 234. The seat 333 fits, and at this time the block A216 on the shell A211 is placed under the block B322, so that the block B322 engages and limits the block A216, so that the engagement between the block B322 and the block A216 can also be understood as a similar interference fit, and then the end of the threaded rod 346 is rotated in the adjustment groove by a screwdriver to drive the slide rod 342 to move to the left, and the slide rod 342 drives the positioning block 343 to move to the left, and the two positioning blocks 343 are respectively inserted into the positioning grooves of the two splicing rods 232, and the positioning blocks 343 fit with the corresponding positioning grooves, and the positioning blocks 343 limit the splicing rod 232, further ensuring the stability of the connection between the connecting shell 31 and the shell assembly 21, and keeping the contact head 233 fit with the contact seat 333, completing the replacement of the entire replacement mechanism 2.

[0039] The limiting assembly 32 includes an insertion seat 321 and a block B322. The top of the connecting shell 31 is fixedly connected to the insertion seat 321. The left and right ends of the insertion seat 321 are fixedly connected to the block B322. The outer side of the block B322 is slidably connected to the block A216. A connecting hole is opened on the inner side of the insertion seat 321. The outer side of the splicing rod 232 is slidably connected to the connecting hole. The connecting hole passes through the surface of the connecting shell 31. Then, the shell assembly 21 and the connecting shell 31 are pulled in opposite directions by force, so that the connecting shell 31 1 and the shell assembly 21, pull the splicing rod 232 out of the connecting shell 31, and also pull out the insertion seat 321, then replace the new replacement mechanism 2 with the microwave ablation needle body 1, and then pass the new splicing rod 232 through the insertion seat 321 and insert it into the connecting shell 31, and the contact head 233 fits with the contact seat 333. At this time, the block A216 on the shell A211 is placed under the block B322, so that the block B322 engages and limits the block A216, so that the engagement of the block B322 and the block A216 can also be understood as a similar interference fit.

[0040] Two groups of the supply item components 33 are installed on the inner side of the bottom end of the connecting shell 31. The two groups of the supply item components 33 are arranged symmetrically on the left and right. The supply item components 33 include an external wire, a mounting shell 331, a connecting wire B332, a contact seat 333 and a mounting block 334. The inner side of the bottom end of the connecting shell 31 is fixedly connected to the mounting shell 331, the bottom end of the mounting shell 331 is fixedly connected to the external wire, the top of the mounting shell 331 is fixedly connected to the connecting wire B332, the top of the connecting wire B332 is fixedly connected to the contact seat 333, the bottom end of the contact seat 333 is fixedly connected to the mounting block 334, and one side of the mounting block 334 is fixed to the connecting shell 31 fixed connection, the movement trajectory of the contact head 233 is straight, the contact seat 333 is arranged on the movement trajectory of the contact head 233, the contact at the right end of the fixed seat 11 is in corresponding contact with the contact at the left end of the controller 22, the replacement operation is simple, the external wire is electrically connected to the mounting shell 331, the mounting shell 331 is electrically connected to the contact seat 333 through the connecting line B332, the contact seat 333 is in contact with the contact head 233, the contact seat 333 is electrically connected to the contact head 233, the contact head 233 is electrically connected to the controller 22 through the connecting line A234, the controller 22 runs and outputs to the contact of the fixed seat 11, and the microwave ablation needle body 1 can operate.

[0041] It should be noted that the contacts of the controller 22 and the contacts of the fixing base 11 can be understood as two elastic conductive sheets. After the two contacts are in contact, the controller 22 and the fixing base 11 are energized.

[0042] The positioning assembly 34 includes a sliding sleeve 341, a sliding rod 342, a positioning block 343, a connecting seat 344 and a rotating block 345. The sliding sleeve 341 is fixedly connected to the inner side of the left end of the connecting shell 31. The sliding rod 342 is slidably connected to the inner side of the sliding sleeve 341. The rear end face of the sliding rod 342 is fixedly connected to the positioning block 343. The inner side of the right end of the connecting shell 31 is fixedly connected to the connecting seat 344. A rotating groove is provided on the inner side of the connecting seat 344. The rotating block 345 is rotatably connected to the inner side wall of the rotating groove. The threaded rod 346 is fixedly connected to the inner side of the rotating block 345. A threaded hole is provided on the outer side of the sliding rod 342. The inner side wall of the threaded hole is connected to the threaded rod 346. 6 threaded connection, the inner wall of the sliding sleeve 341 is set in a square shape, the sliding rod 342 is set in a square strip shape, the movement trajectory of the positioning block 343 is straight, the positioning groove of the splicing rod 232 is set on the movement trajectory of the positioning block 343, the outer side of the positioning block 343 is slidably connected with the inner wall of the positioning groove, the inner side of the connecting seat 344 is provided with a connecting groove, the connecting groove passes through the surfaces of the left and right ends of the connecting seat 344, the threaded rod 346 is set inside the connecting groove, the right end of the connecting shell 31 is provided with an adjustment groove, the adjustment groove is set in a "T" shape, the adjustment groove passes through the surface of the connecting shell 31, the threaded rod 346 is set in the adjustment groove On the surface, the controller 22 is used to assist in controlling the output power of the microwave ablation needle body 1. If a different controller 22 is required, the overall replacement mechanism 2 is replaced. The end of the threaded rod 346 is rotated by a screwdriver to drive the threaded rod 346 to rotate. The threaded rod 346 is rotated in the connecting seat 344 through the turning block 345. The turning block 345 is limited by the connecting seat 344 to keep the position of the threaded rod 346 stationary. The square setting of the slide rod 342 makes the outer side of the slide rod 342 fit with the inner wall of the sliding sleeve 341 to prevent the slide rod 342 from rotating at will. Then, the threaded rod 346 cooperates with the thread of the splicing rod 232 to make the slide rod 342 move to the right, and the slide rod 342 drives the positioning block 343 When the locking cam 330 is in the unlocked position, the locking cam 330 is in the unlocked position, and the cam 330 is unlocked, so that the cam 330 is unlocked.

[0043] Working principle: The device is convenient for replacing the microwave ablation needle body 1, and the replacement mechanism 2 can also be replaced as a whole. The microwave ablation needle body 1 using the same controller 22 can be replaced in the replacement mechanism 2. When using a different controller 22, the replacement mechanism 2 is replaced as a whole on the mother seat mechanism 3. The card strip A212 on the shell A211 and the card strip B214 on the shell B213 are engaged with each other, and then the shell A211 and the shell B213 are pried apart by external force, so that the card strip A212 and the card strip B214 are separated from each other, and then the shell B213 is opened to take the fixing seat 11 out of the shell A211, and a new microwave ablation needle body 1 with the fixing seat 11 is replaced, and then the fixing seat 11 is placed in the shell 333 is electrically connected to the contact seat 333 through the connecting line B332, and the contact seat 333 is in contact with the contact head 233. The contact seat 333 is electrically connected to the contact head 233, and the contact head 233 is electrically connected to the controller 22 through the connecting line A234. The controller 22 runs and outputs to the contacts of the fixed seat 11, and the microwave ablation needle body 1 can run. After the replacement of the microwave ablation needle body 1 is completed, the shell B213 is aligned with the shell A211 and pressed hard to engage the card strip A212 with the card strip B214, which can be understood as a card. The strip A212 and the card strip B214 have a similar interference fit. The controller 22 is used to assist in controlling the output power of the microwave ablation needle body 1. If a different controller 22 is required, the overall replacement mechanism 2 is replaced. The end of the threaded rod 346 is rotated by a screwdriver to drive the threaded rod 346 to rotate. The threaded rod 346 rotates in the connecting seat 344 through the turning block 345. The turning block 345 is limited by the connecting seat 344 to keep the position of the threaded rod 346 stationary. The square setting of the sliding rod 342 makes the outer side of the sliding rod 342 fit with the inner wall of the sliding sleeve 341 to prevent the sliding rod 342 from rotating at will. Then, the threaded rod 346 is matched with the thread of the splicing rod 232 to make the sliding rod 342 move to the right, and the sliding rod 342 drives the positioning block 343 to move to the right. After the cam 321 is released, the cam 322 is released and the cam 323 is released, so that the cam 323 and the housing 21 are separated and the cam 323 are pulled out of the cam 321. Then, a new replacement mechanism 2 with a microwave ablation needle body 1 is replaced. Then, the new cam 232 is passed through the insertion seat 321 and inserted into the housing 31. The contact head 233 is fitted with the contact seat 333. At this time, the block A216 on the housing A211 is placed under the block B322, so that the block B322 is engaged with the block A216 to limit the position. The engagement of the block B322 and the block A216 can also be understood as a similar interference fit.The end of the threaded rod 346 is then rotated in the adjustment slot by a screwdriver, driving the sliding rod 342 to move to the left, and the sliding rod 342 drives the positioning block 343 to move to the left, and the two positioning blocks 343 are respectively inserted into the positioning slots of the two splicing rods 232, and the positioning blocks 343 are fitted with the corresponding positioning slots. The positioning blocks 343 limit the splicing rods 232, further ensuring the stability of the connection between the connecting shell 31 and the shell assembly 21, and keeping the contact head 233 fitted with the contact seat 333, completing the replacement of the entire replacement mechanism 2, and adjusting the operation as needed is simple. In summary, it can be understood that if the same controller 22 is needed, the microwave ablation needle body 1 can be replaced as needed. The microwave ablation needle body 1 is disposable and the controller 22 is a common part. When a different controller 22 is needed, the replacement mechanism 2 with the microwave ablation needle body 1 is replaced as a whole. At this time, the replacement mechanism 2 with the microwave ablation needle body 1 is used as a single-use device. Both methods can replace the microwave ablation needle body 1 in the replacement mechanism 2 alone, reducing costs.

[0044] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A microwave ablation needle suitable for pediatric vascular malformations, characterized by: It comprises a microwave ablation needle body (1), a fixing seat (11) is fixedly connected to the outer side of the right end of the microwave ablation needle body (1), a replacement mechanism (2) is installed on the microwave ablation needle body (1), and the replacement mechanism (2) is detachably connected to a female seat mechanism (3); The replacement mechanism (2) comprises a housing assembly (21), a controller (22) and a connection assembly (23); the controller (22) is mounted on the inner side of the housing assembly (21); and the connection assembly (23) is mounted on the inner side of the housing assembly (21); The female seat mechanism (3) comprises a connecting shell (31), a limiting assembly (32), a supply assembly (33) and a positioning assembly (34); the limiting assembly (32) is clamped below the shell assembly (21); the connecting shell (31) is mounted on the bottom end of the limiting assembly (32); the supply assembly (33) is mounted on the inner side of the connecting shell (31); and the positioning assembly (34) is mounted on the inner side of the connecting shell (31).

2. The microwave ablation needle for pediatric vascular malformations according to claim 1, characterized in that: The housing assembly (21) comprises a housing A (211), a clipping strip A (212), a housing B (213), a clipping strip B (214), a limit block (215) and a clipping block A (216); the housing A (211) is slidably connected to the outside of the fixing seat (11); the clipping strip A (212) is fixedly connected to the front end of the housing A (211); the housing B (213) is slidably connected to the outside of the clipping strip A (212); the clipping strip B (214) is fixedly connected to the front end of the housing B (213); the limit block (215) is provided on the right side of the fixing seat (11); The rear end face of the limit block (215) is fixedly connected to the shell A (211), the inner side of the shell A (211) is fixedly connected to the clamping strip A (212), the left end of the shell A (211) and the left end of the shell B (213) are provided with placement holes arranged symmetrically in the front and back, the outer side of the fixing seat (11) is in contact with the inner side wall of the placement hole, the bottom end of the shell A (211) and the bottom end of the shell B (213) are provided with splicing holes arranged symmetrically in the front and back, the connecting component (23) is arranged inside the splicing hole, and the two ends of the left end of the inner side wall of the splicing hole are fixedly connected to the clamping block A (216).

3. The microwave ablation needle for pediatric vascular malformations according to claim 2, characterized in that: The connecting assembly (23) comprises a blocking rod (231), a splicing rod (232), a contact head (233) and a connecting line A (234); the blocking rod (231) is fixedly connected to the inner side of the housing A (211); the bottom end of the blocking rod (231) is fixedly connected to two splicing rods (232); the bottom end of the splicing rod (232) is fixedly connected to the contact head (233); the top end of the contact head (233) is fixedly connected to the connecting line A (234); the top end of the connecting line A (234) is fixedly connected to the controller (22); the connecting line A (234) passes through the surface of the splicing rod (232); and a positioning groove is provided on the right side of the splicing rod (232).

4. The microwave ablation needle for pediatric vascular malformations according to claim 3, characterized in that: The limiting assembly (32) comprises an insertion seat (321) and a clamping block B (322); the top of the connecting shell (31) is fixedly connected to the insertion seat (321); the left and right ends of the insertion seat (321) are fixedly connected to the clamping block B (322); and the outer side of the clamping block B (322) is slidably connected to the clamping block A (216).

5. The microwave ablation needle for pediatric vascular malformations according to claim 4, characterized in that: A connecting hole is provided on the inner side of the insertion seat (321), and the outer side of the splicing rod (232) is slidably connected to the connecting hole, and the connecting hole passes through the surface of the connecting shell (31).

6. The microwave ablation needle for pediatric vascular malformations according to claim 5, characterized in that: Two groups of the supply item components (33) are installed on the inner side of the bottom end of the connection shell (31). The two groups of the supply item components (33) are arranged symmetrically on the left and right. The supply item components (33) include an external wire, a mounting shell (331), a connecting wire B (332), a contact seat (333) and a mounting block (334). The inner side of the bottom end of the connection shell (31) is fixedly connected to the mounting shell (331). The bottom end of the mounting shell (331) is fixedly connected to the external wire. The top end of the mounting shell (331) is fixedly connected to the connecting wire B (332). The top end of the connecting wire B (332) is fixedly connected to the contact seat (333). The bottom end of the contact seat (333) is fixedly connected to the mounting block (334). One side of the mounting block (334) is fixedly connected to the connection shell (31).

7. The microwave ablation needle for pediatric vascular malformations according to claim 6, characterized in that: The movement track of the contact head (233) is linear, and the contact seat (333) is arranged on the movement track of the contact head (233).

8. The microwave ablation needle for pediatric vascular malformations according to claim 6, characterized in that: The positioning assembly (34) includes a sliding sleeve (341), a sliding rod (342), a positioning block (343), a connecting seat (344), a rotating block (345) and a threaded rod (346). The sliding sleeve (341) is fixedly connected to the inner side of the left end of the connecting shell (31). The sliding rod (342) is slidably connected to the inner side of the sliding sleeve (341). The rear end face of the sliding rod (342) is fixedly connected to the positioning block (343). The connecting seat (344) is fixedly connected to the inner side of the right end of the connecting shell (31). A rotating groove is provided on the inner side of the connecting seat (344). The rotating block (345) is rotatably connected to the inner side wall of the rotating groove. The threaded rod (346) is fixedly connected to the inner side of the rotating block (345). A threaded hole is provided on the outer side of the sliding rod (342). The inner side wall of the threaded hole is threadedly connected to the threaded rod (346).

9. The microwave ablation needle for pediatric vascular malformations according to claim 8, characterized in that: The inner side wall of the sliding sleeve (341) is arranged in a square shape, the sliding rod (342) is arranged in a square strip shape, the movement track of the positioning block (343) is linear, the positioning groove of the splicing rod (232) is arranged on the movement track of the positioning block (343), and the outer side of the positioning block (343) is slidably connected to the inner side wall of the positioning groove.

10. The microwave ablation needle for pediatric vascular malformations according to claim 9, characterized in that: A connecting groove is provided on the inner side of the connecting seat (344), and the connecting groove passes through the surfaces of the left and right ends of the connecting seat (344). The threaded rod (346) is arranged on the inner side of the connecting groove. An adjusting groove is provided on the right end of the connecting shell (31), and the adjusting groove is arranged in a "T" shape. The adjusting groove passes through the surface of the connecting shell (31), and the threaded rod (346) is arranged on the surface of the adjusting groove.

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