High-flow bending-resistant guiding catheter

Abstract

The invention discloses a high-flow anti-bending guide catheter, which relates to the technical field of medical catheters.The high-flow anti-bending guide catheter comprises a main catheter body, an infusion tube is slidably connected in the main catheter body in a penetrating manner, one end of the infusion tube is fixedly connected with a round head, and liquid outlet holes are annularly formed in one side, close to the round head, of the infusion tube at equal intervals; the infusion area adjusting mechanism comprises a limiting column, the limiting column is slidably connected to the position, close to the liquid outlet hole, in the infusion tube, a connecting column is rotatably connected to the end, away from the round head, of the limiting column in a penetrating mode and penetrates through the infusion tube, and a connecting frame is fixedly connected to the position, located outside the infusion tube, of the outer surface of the connecting column and can drive the limiting column to slide in the infusion tube. The liquid outlet holes in different areas are blocked, the infusion areas of the liquid outlet holes are changed, medical staff can flexibly adjust the infusion areas according to specific operation scenes and requirements, it is ensured that liquid can be accurately conveyed to the target position, and the accuracy and efficiency of an operation are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical catheters, in particular to a high-flow anti-bending guide catheter. BACKGROUND

[0002] In the field of vascular intervention, the guide catheter as a key medical device directly affects the smooth progress of the operation and the treatment effect of the patient. In vascular intervention surgery, such as coronary angiography and stent implantation, the guide catheter is required to have high-flow liquid delivery capacity to ensure that the contrast agent and other liquids can be quickly and uniformly injected into the blood vessel, thereby clearly displaying the blood vessel structure and providing accurate image guidance for the operation. The existing patent number CN208301962U discloses a high-flow anti-bending guide catheter, which includes a pipe body, a liquid injection cavity is formed in the main pipe body, a guide head is obliquely arranged at the outer front end of the main pipe body, a guide wire cavity is formed in the guide head, the guide wire cavity extends to the inside of the main pipe body, and the guide wire cavity inside the main pipe body is a spiral structure, which is wound outside the liquid injection cavity. The end of the guide wire cavity extends to the rear end of the main pipe body, and the end of the guide wire cavity is closed. A guide wire is arranged in the guide wire cavity. The front end of the main pipe body is fixedly connected with a press-type split locking connector, and the rear end of the main pipe body is fixedly provided with a liquid outlet head. The guide wire cavity with a spiral structure cooperates with the guide wire to increase the overall toughness and softness of the main pipe body, the travel route can be changed, the damage to the tissue or blood vessel is reduced, and the problems of folding, breaking and small flow are effectively solved. Although the above can increase the toughness and softness of the main pipe body, the liquid delivery area of the liquid outlet head cannot be adjusted. In different surgical scenarios, medical staff need different liquid delivery areas to meet the needs of the operation. The liquid outlet head with a fixed liquid delivery area cannot meet the diversity needs, resulting in reduced operation efficiency or poor operation effect. In addition, the blood vessel conditions of different patients, such as blood vessel diameter and blood vessel wall elasticity, are different. The liquid outlet head with a fixed liquid delivery area cannot adapt to these differences. In some cases, a fixed flow rate causes the liquid to be delivered too fast or too slow, which causes unnecessary pressure on the blood vessel or affects the accuracy of the operation.

[0003] Therefore, the present application provides a high-flow anti-bending guide catheter to solve the above problems. SUMMARY

[0004] (I) Technical problems to be solved In view of the shortcomings of the prior art, the present application provides a high-flow anti-bending guide catheter, which can effectively solve the problems in the prior art.

[0005] (II) Technical solutions To achieve the above-mentioned purposes, the purposes of the present application can be realized by the following technical solutions: The utility model provides a high flow anti -folding guide catheter, including the main pipe body, the inside sliding joint has the infusion pipe through, one end fixedly connected with the round head of infusion pipe, the infusion pipe is close to the side annular equidistance of round head and is equipped with the liquid outlet hole, still include infusion area adjusting mechanism and blockage cleaning mechanism, infusion area adjusting mechanism includes the limiting post, the limiting post is close to the side of the infusion pipe inside and is equipped with the air inlet hole, the limiting post outer surface is close to the air inlet hole and is equipped with the air outlet hole, the air outlet hole size and the liquid outlet hole are consistent, the air inlet hole and the air outlet hole inside all are provided with check valve.

[0006] As a further scheme of the utility model: the connecting frame is close to the side fixed connection of main pipe body and is equipped with the circular ring, the circular ring is set on the outer surface of infusion pipe, the outer surface of infusion pipe is fixedly connected with the fixed plate, the circular ring is connected on the fixed plate.

[0007] As a further scheme of the utility model: the upper end surface of fixed plate is equipped with the locating hole, the gap between locating hole and the gap between liquid outlet hole are same, the outer surface of circular ring is connected with the locating post through sliding, the locating post and locating hole are mutually clamped.

[0008] As a further scheme of the utility model: the upper end of locating post is fixedly connected with the fixed block, the both sides of fixed block are rotatably connected with the jacking plate, the both sides of jacking plate away from fixed block are rotatably connected with the pressing disc, the pressing disc is located at the both sides of circular ring respectively.

[0009] As a further scheme of the utility model: the both sides of pressing disc close to circular ring are fixedly connected with the extension column, the both sides of outer surface of circular ring close to extension column are fixedly connected with the hollow column, the both sides of extension column are connected with the hollow column through sliding.

[0010] As a further scheme of the utility model: the both sides of extension column close to hollow column are fixedly connected with the spring, the both sides of spring away from extension column are fixedly connected with the inside of hollow column.

[0011] As a further scheme of the utility model: the both sides of pressing disc are connected with the hollow column through sliding, the both sides of limiting post close to connecting column are equipped with the air inlet hole, the outer surface of limiting post close to air inlet hole is equipped with the air outlet hole, the air outlet hole size and the liquid outlet hole are consistent, the air inlet hole and the air outlet hole inside all are provided with check valve.

[0012] As a further scheme of the utility model: the both sides of pressing disc are set on the outer surface of connecting column, the outer surface of connecting column close to pressing disc is equipped with the reciprocating groove, the reciprocating groove is connected with the ball through sliding, the ball is fixedly connected with the inside of pressing disc.

[0013] As a further scheme of the application: the blockage cleaning mechanism further comprises a knob, the knob is sleeved on the connecting column close to one end of the connecting frame, a sliding groove is formed on the outer surface of the connecting column close to one side of the knob, a sliding block is slidably connected in the sliding groove, the sliding block is fixedly connected in the knob, a vertical plate is fixedly connected on the upper surface of the knob, a clamping column is fixedly connected on the side of the vertical plate close to the connecting frame, a connecting plate is fixedly connected on the upper end surface of the connecting frame, and the clamping column penetrates through and is clamped on the connecting plate.

[0014] (Three) beneficial effects Compared with the prior art, the application provides a high-flow anti-bending guide catheter, which has the following beneficial effects: 1. By setting the infusion area adjusting mechanism, the limiting column can be driven to slide in the infusion tube, block the liquid outlet holes in different areas, and change the infusion area of the liquid outlet holes. Medical staff can not only flexibly adjust the infusion area according to the specific operation scene and needs, but also ensure that the liquid can be accurately delivered to the target position, improve the accuracy and efficiency of the operation. Moreover, the blood vessel conditions (such as blood vessel diameter, blood vessel wall elasticity, etc.) of different patients are different. By adjusting the infusion area, these differences can be better adapted to, reducing damage to blood vessels and improving the safety of the operation. Moreover, by adjusting the infusion area, the flow of the liquid can be more accurately controlled, avoiding the liquid being delivered too fast or too slow due to fixed flow, reducing unnecessary pressure on the blood vessels, and improving the accuracy of the operation. By driving the limiting column to cover the liquid outlet holes, the situation that dust and impurities enter the inside of the infusion tube through the liquid outlet holes during storage can be avoided, the cleanliness and sterility of the infusion tube can be maintained, external pollutants can be prevented from entering the inside of the infusion tube, the risk of postoperative infection can be significantly reduced, and the safety of the operation can be improved. Moreover, preventing dust and impurities from entering can protect the mechanical components and structures inside the infusion tube, reduce mechanical failures caused by pollution, and prolong the service life of the infusion tube.

[0015] 2. By setting the positioning column and the positioning hole, the position of the limiting column can be fixed after the movement of the limiting column is completed. Not only can the limiting column be accurately fixed after being moved to the specified position, avoiding inaccurate infusion area caused by position deviation, so that the limiting column will not be displaced during the operation due to external force or liquid pressure, but also medical staff can quickly move the limiting column to the required position and fix it through the positioning column and the positioning hole, reducing the operation time and complexity. Once the limiting column is fixed, it does not need to be adjusted frequently, improving the efficiency and smoothness of the operation. Wherein, by setting the spacing between the limiting hole and the liquid outlet hole is the same, not only can facilitate medical staff to accurately understand the position of the limiting column moving to block the liquid outlet hole of the specified area, without complex measurement or calculation, improve the accuracy and efficiency of operation, reduce the time of adjusting and confirming the position, simplify the operation process, and intuitive visual feedback reduces the misoperation caused by inaccurate position judgment, improves the safety and reliability of the operation.

[0016] 3、By setting the blockage cleaning mechanism, the extrusion disc can be driven to spray air from the inside of the liquid outlet hole, and the blockage inside the liquid outlet hole can be cleaned, which can effectively remove the impurities and blood clots in the liquid outlet hole, reduce the risk of blockage, ensure the smoothness of the infusion tube, prolong the service life of the infusion tube, reduce the frequency of replacing the catheter caused by blockage, reduce the medical cost, and in the operation process, the catheter blockage will cause the operation to be interrupted, and the catheter needs to be cleaned or replaced, through the automatic cleaning function, the interruption can be reduced, and the continuity and efficiency of the operation can be improved.

[0017] 4、Through the clamping of the clamping column and the connecting plate, the position of the extrusion disc can be limited, so that the extrusion disc is attached to the air inlet hole, avoiding the situation that the infusion tube enters the limiting column through the air inlet hole during the transportation of liquid, which not only can protect the mechanical parts inside the limiting column from corrosion and damage, prolong the service life, improve the overall reliability and stability, but also through the limiting design of the clamping column and the connecting plate, the operation process can be simplified, the adjustment and inspection required by medical staff in the operation process can be reduced, and the operation convenience can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to facilitate the understanding of those skilled in the art, the present application will be further described below with reference to the accompanying drawings.

[0019] Figure 1 The overall structure of the present application is shown in the figure; Figure 2 The internal structure of the infusion tube near the liquid outlet hole of the present application is shown in the figure; Figure 3 The internal structure of the limiting column of the present application is shown in the figure; Figure 4 The connecting structure of the connecting column and the extrusion disc of the present application is shown in the figure; Figure 5 The connecting structure of the ring and the connecting column of the present application is shown in the figure; Figure 6 The present application Figure 5 The enlarged structure of area A in the present application is shown in the figure; Figure 7 The connecting structure of the infusion tube and the ring of the present application is shown in the figure; Figure 8Schematic view of the connecting structure of the pressing disc and the hollow column of the present application; Figure 9 Schematic view of the connecting structure of the connecting column and the knob of the present application.

[0020] In the figure: 1, main pipe body; 2, infusion pipe; 3, liquid outlet hole; 401, connecting column; 402, limiting column; 403, connecting frame; 404, circular ring; 405, fixed plate; 406, positioning hole; 407, positioning column; 408, fixed block; 409, jacking plate; 410, pressing disc; 411, hollow column; 412, extension column; 413, spring; 501, air inlet hole; 502, air outlet hole; 503, extrusion disc; 504, reciprocating groove; 505, ball; 506, knob; 507, vertical plate; 508, clamping column; 509, connecting plate; 510, sliding groove; 511, sliding block; 6, round head. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] A high-flow anti-bending guide catheter of the present embodiment, as shown in Figure 1 - Figure 9 includes a main pipe body 1, an infusion pipe 2 is slidably connected inside the main pipe body 1, a round head 6 is fixedly connected to one end of the infusion pipe 2, a liquid outlet hole 3 is annularly and equidistantly provided on the side of the infusion pipe 2 close to the round head 6, and a infusion area adjusting mechanism and a blockage cleaning mechanism are further included. The infusion area adjusting mechanism includes a limiting column 402 which is slidably connected inside the infusion pipe 2 close to the liquid outlet hole 3, and a connecting column 401 which is rotatably connected to the end of the limiting column 402 away from the round head 6 and penetrates through the infusion pipe 2. The outer surface of the connecting column 401 is fixedly connected with a connecting frame 403 outside the infusion pipe 2, and the infusion area adjusting mechanism is used to block different numbers of liquid outlet holes 3.

[0023] In the present embodiment, as shown in Figure 7 the connecting frame 403 is fixedly connected to a circular ring 404 on the side close to the main pipe body 1, the circular ring 404 is sleeved on the outer surface of the infusion pipe 2, the outer surface of the infusion pipe 2 is fixedly connected with a fixed plate 405, and the circular ring 404 is slidably connected to the fixed plate 405. When the circular ring 404 is slid on the fixed plate 405, the connecting frame 403 can be moved synchronously.

[0024] In the present embodiment, asFigure 7 As shown, equidistant positioning holes 406 are arranged on the upper end surface of the fixing plate 405, the gap between the positioning holes 406 is the same as the gap between the liquid outlet holes 3, and a positioning column 407 is slidably connected to the outer surface of the ring 404. The positioning column 407 and the positioning holes 406 are mutually clamped, and the ring 404 can be fixed on the upper end surface of the fixing plate 405 at a specified position through the mutual clamping of the positioning column 407 and the positioning holes 406.

[0025] In this embodiment, as shown in Figure 7 The upper end of the positioning column 407 is fixedly connected with a fixing block 408, both sides of the fixing block 408 are rotatably connected with a jacking plate 409, and both sides of the jacking plate 409 away from the fixing block 408 are rotatably connected with a pressing disc 410. The pressing disc 410 is located on both sides of the ring 404, and when the two pressing discs 410 are pressed close to each other, the jacking plate 409 can push the fixing block 408 to drive the positioning column 407 to rise synchronously.

[0026] In this embodiment, as shown in Figure 7 and Figure 8 The end of the pressing disc 410 close to the ring 404 is fixedly connected with an extension column 412, and the outer surface of the ring 404 close to the extension column 412 is fixedly connected with a hollow column 411. When the pressing disc 410 is pressed, the extension column 412 will slide into the hollow column 411.

[0027] In this embodiment, as shown in Figure 8 The end of the extension column 412 close to the hollow column 411 is fixedly connected with a spring 413, and the end of the spring 413 away from the extension column 412 is fixedly connected to the inside of the hollow column 411. When the extension column 412 is forced to slide into the hollow column 411, the spring 413 will be extruded, and when the force disappears, the extension column 412 will be automatically pushed out of the hollow column 411 through the rebound force of the spring 413.

[0028] In the prior art, the infusion area of the liquid outlet head cannot be adjusted, and in different surgical scenarios, medical staff need different infusion areas to meet the surgical needs. The liquid outlet head with a fixed infusion area cannot meet this diversity requirement, resulting in reduced surgical efficiency or poor surgical results. Moreover, the blood vessel conditions (such as blood vessel diameter, blood vessel wall elasticity, etc.) of different patients differ, and the liquid outlet head with a fixed infusion area cannot adapt to these differences. In some cases, a fixed flow rate can cause liquid to be delivered too quickly or too slowly, causing unnecessary pressure on the blood vessel or affecting the accuracy of the surgery. Compared with the prior art, the limiting column 402 can be driven to slide within the infusion tube 2 to block the liquid outlet hole 3 in different areas, changing the infusion area of the liquid outlet hole 3. Medical staff can not only flexibly adjust the infusion area according to the specific surgical scenario and needs to ensure that the liquid can be accurately delivered to the target position, improving the accuracy and efficiency of the surgery, but also adapt to the differences in blood vessel conditions (such as blood vessel diameter, blood vessel wall elasticity, etc.) of different patients by adjusting the infusion area, reducing damage to the blood vessel, and improving the safety of the surgery. Moreover, by adjusting the infusion area, the flow rate of the liquid can be more accurately controlled to avoid liquid being delivered too quickly or too slowly due to a fixed flow rate, reducing unnecessary pressure on the blood vessel and improving the accuracy of the surgery. By driving the limiting column 402 to completely cover the liquid outlet hole 3, the situation where dust and impurities enter the interior of the infusion tube 2 through the liquid outlet hole 3 during storage can be avoided, maintaining the cleanliness and sterility of the infusion tube 2. Preventing external contaminants from entering the interior of the infusion tube 2 can significantly reduce the risk of postoperative infection and improve the safety of the surgery. Moreover, preventing dust and impurities from entering can protect the mechanical components and structures inside the infusion tube 2, reducing mechanical failures caused by contamination and prolonging the service life of the infusion tube 2.

[0029] In other aspects, the present embodiment also provides a clogging cleaning mechanism for cleaning the clogging inside the liquid outlet hole 3, as shown in Figure 1 Figure 6 , Figure 9 The clogging cleaning mechanism includes an extrusion disc 503 that is slidingly connected to the limiting column 402. The limiting column 402 is symmetrically provided with an air inlet hole 501 near one side of the connecting column 401. An air outlet hole 502 is annularly provided on the outer surface of the limiting column 402 near the air inlet hole 501. The size of the air outlet hole 502 is consistent with that of the liquid outlet hole 3. A one-way valve is arranged inside the air inlet hole 501 and the air outlet hole 502.

[0030] In the present embodiment, as shown in Figure 4 ​As shown, the extrusion disk 503 is sleeved on the outer surface of the connecting column 401, and a reciprocating groove 504 is provided on the outer surface of the connecting column 401 near the extrusion disk 503. A ball 505 is slidably connected in the reciprocating groove 504, and the ball 505 is fixedly connected to the inside of the extrusion disk 503. When the connecting column 401 rotates, the extrusion disk 503 can be moved back and forth horizontally on the outer surface of the connecting column 401 through the reciprocating groove 504 and the ball 505.

[0031] In this embodiment, Figure 6 and Figure 9 As shown, the blockage cleaning mechanism also includes a knob 506, which is sleeved on the end of the connecting column 401 near the connecting frame 403, and a sliding groove 510 is provided on the outer surface of the connecting column 401 near the knob 506. A slider 511 is slidably connected in the sliding groove 510, and the slider 511 is fixedly connected to the knob 506. A vertical plate 507 is fixedly connected to the upper surface of the knob 506, and a card column 508 is fixedly connected to the side of the vertical plate 507 near the connecting frame 403. The upper end surface of the connecting frame 403 is fixedly connected to the connecting plate 509. The column 508 is connected to the connecting plate 509 through the card. When the knob 506 is moved horizontally, the slider 511 and the slide groove 510 are slidably connected, which will cause the knob 506 to move horizontally on the outer surface of the connecting column 401. At the same time, the knob 506 will drive the card column 508 to move through the vertical plate 507, so that the card column 508 is carded into the connecting plate 509 and separated from the connecting plate 509. When the knob 506 is rotated, the knob 506 will move the slide groove 510 through the slider 511, driving the connecting column 401 to rotate synchronously.

[0032] Compared with the existing technology, the extrusion disk 503 can be driven to eject air from the inside of the liquid outlet 3 to clean the blockage inside the liquid outlet 3. It can not only effectively remove impurities and blood clots in the liquid outlet 3, reduce the risk of blockage, ensure the smooth flow of the infusion tube 2, extend the service life of the infusion tube 2, reduce the frequency of catheter replacement due to blockage, and reduce medical costs, but also during the operation, catheter blockage will lead to interruption of the operation, and the catheter needs to be cleaned or replaced. The automatic cleaning function can reduce such interruptions and improve the continuity and efficiency of the operation.

[0033] The working process and principles involved in the overall content of the above embodiment are as follows: In the process of medical staff using the infusion tube 2 for infusion, when it is necessary to adjust the infusion area of the liquid outlet hole 3 on the infusion tube 2 according to the needs or the blood vessel conditions of the patient, first squeeze the pressing discs 410 on both sides of the ring 404, so that the pressing discs 410 are close to the ring 404, and push the extension column 412 connected to one side of the pressing disc 410 close to the ring 404 into the hollow column 411, and squeeze the spring 413 connected between the extension column 412 and the hollow column 411. Since the upper end of the pressing disc 410 is rotationally connected with the jacking plate 409, the two jacking plates 409 are rotationally connected with the fixed block 408, and the lower end of the fixed block 408 is fixedly connected with the positioning column 407, therefore, as the pressing discs 410 on both sides are close to the ring 404, the jacking plate 409 is arranged to push the fixed block 408 to drive the positioning column 407 to slide vertically upward on the outer surface of the ring 404, and at the same time, the positioning column 407 slides out of one of the positioning holes 406 on the upper end surface of the fixed plate 405. After the positioning column 407 and the positioning hole 406 are completely separated, the medical staff can horizontally move the ring 404 to slide away from the main tube body 1. Since the ring 404 is fixedly connected to the connecting frame 403 on the side away from the main tube body 1, and the connecting frame 403 is fixedly connected to the outer surface of the connecting column 401, therefore, during the movement of the ring 404, the ring 404 will drive the connecting column 401 to slide out of the infusion tube 2 through the connecting frame 403, and drive the limiting column 402 connected to one end of the connecting column 401 in the infusion tube 2 to move, thereby blocking the liquid outlet hole 3 from the inside of the infusion tube 2, changing the infusion area of the liquid outlet hole 3. The medical staff can not only flexibly adjust the infusion area according to the specific operation scene and needs, but also ensure that the liquid can be accurately delivered to the target position, improve the accuracy and efficiency of the operation. Moreover, the blood vessel conditions of different patients (such as the diameter of the blood vessel, the elasticity of the blood vessel wall, etc.) are different. By adjusting the infusion area, these differences can be better adapted to, the damage to the blood vessel is reduced, the safety of the operation is improved, and by adjusting the infusion area, the flow of the liquid can be more accurately controlled, the liquid is prevented from being delivered too fast or too slow due to fixed flow, unnecessary pressure on the blood vessel is reduced, and the accuracy of the operation is improved. After the movement of the limiting column 402 is completed, the staff can release the two sides of the pressing disc 410, and through the rebounding force of the spring 413 connected between the extension column 412 and the hollow column 411, the extension column 412 will automatically slide out of the inside of the hollow column 411, driving the pressing disc 410 to move away from the ring 404. At this time, during the reverse movement of the pressing disc 410, the pressing disc 410 can pull the positioning column 407 to automatically descend through the jacking plate 409 and the fixed block 408, and then be clamped into other positioning holes 406 on the upper end face of the fixed plate 405 again, thereby fixing the position of the ring 404. After the ring 404 is fixed, the ring 404 can fix the position of the limiting column 402 through the connecting frame 403 and the connecting column 401. Not only can it ensure that the limiting column 402 can be accurately fixed after being moved to the specified position, avoid the inaccuracy of the infusion area caused by the position deviation, and make the limiting column 402 not be displaced due to external force or liquid pressure during the operation, but also the medical staff can quickly move the limiting column 402 to the required position and fix it through the positioning column 407 and the positioning hole 406, reducing the operation time and complexity. Once the limiting column 402 is fixed, it does not need to be adjusted frequently, improving the efficiency and smoothness of the operation; During the adjustment of the horizontal movement of the limiting column 402 to block the liquid outlet hole 3, since the distance between the positioning holes 406 and the distance between the liquid outlet holes 3 are the same, the medical staff can determine the area of the liquid outlet hole 3 blocked by the limiting column 402 during the movement of the limiting column 402 by the position of the positioning column 407 clamped into the inside of the positioning hole 406. Not only can it facilitate the medical staff to accurately understand the position of the limiting column 402 to block the specified area of the liquid outlet hole 3, without the need for complex measurement or calculation, improving the operation accuracy and efficiency, reducing the time for adjusting and confirming the position, and simplifying the operation process, but also the intuitive visual feedback reduces the misoperation caused by inaccurate position judgment, improving the safety and reliability of the operation; When the liquid outlet hole 3 on the infusion tube 2 is blocked, the medical staff can pull the infusion tube 2 out of the patient's body, and then drive the limiting post 402 to slide inside the infusion tube 2, so that the air outlet holes 502 opened on the outer surface of the limiting post 402 are aligned with each liquid outlet hole 3 in turn. After the air outlet holes 502 are aligned with the liquid outlet holes 3, the staff can pull the knob 506 horizontally, and the sliding block 511 connected to the inside of the knob 506 and the sliding groove 510 opened on the outer surface of the connecting post 401 are slidably connected, which can drive the knob 506 to move horizontally on the outer surface of the connecting post 401, away from the infusion tube 2, and at the same time, the vertical plate 502 connected to the outer surface of the knob 506 is 07, drives the clamping column 508 to move horizontally synchronously, so that the clamping column 508 slides out from the connecting plate 509 connected to the upper end surface of the connecting frame 403 and separates from the connecting plate 509. After the clamping column 508 and the connecting plate 509 are completely separated, the medical staff can turn the knob 506, and use the slider 511 to toggle the slide 510 to drive the connecting column 401 to rotate, so that the connecting column 401 rotates on the infusion tube 2 and the limiting column 402. Since the outer surface of the connecting column 401 is located on one side of the inner side of the limiting column 402, a reciprocating groove 504 is opened, and a ball 505 is slidably connected in the reciprocating groove 504, and the ball 505 is fixedly connected to the extrusion disk 503 is located at the inner center of the limiting column 402. Therefore, as the connecting column 401 rotates, the connecting column 401 will change the position of the reciprocating groove 504, so that the reciprocating groove 504 squeezes the ball 505. At the same time, the ball 505 will move along the path of the reciprocating groove 504, driving the extrusion plate 503 to move horizontally back and forth inside the limiting column 402. When the extrusion plate 503 moves away from the air inlet 501 inside the limiting column 402, the air outside the limiting column 402 will be sucked into the limiting column 402. On the contrary, when the extrusion plate 503 moves horizontally close to the air inlet 501, the air inside the limiting column 402 will be blown out through the air outlet 502. The air outlet 502 corresponds to the liquid outlet 3, and the air outlet 502 and the liquid outlet 3 are of the same size. Therefore, when the gas is discharged from the air outlet 502, it will be discharged from the liquid outlet 3 at the same time, and the blockage inside the liquid outlet 3 will be discharged. This can not only effectively remove impurities and blood clots in the liquid outlet 3, reduce the risk of blockage, ensure the smooth flow of the infusion tube 2, extend the service life of the infusion tube 2, reduce the frequency of catheter replacement due to blockage, and reduce medical costs, but also during the operation, catheter blockage will lead to interruption of the operation, requiring cleaning or replacement of the catheter. The automatic cleaning function can reduce such interruption and improve the continuity and efficiency of the operation. After the liquid outlet hole 3 on the infusion tube 2 is cleaned, the medical staff can rotate the knob 506 to drive the clamping column 508 to move to the top, then horizontally reverse push the knob 506 close to the connecting plate 509, so that the knob 506 drives the clamping column 508 to be clamped into the connecting plate 509 again, after the clamping column 508 and the connecting plate 509 are clamped, the knob 506 cannot be rotated, at this time, the extrusion disc 503 in the limiting column 402 is attached to the inner wall of the limiting column 402 close to the air inlet hole 501, and the air inlet hole 501 is blocked, so that the infusion tube 2 cannot enter the limiting column 402 through the air inlet hole 501 during the liquid conveying process, which not only can protect the mechanical parts in the limiting column 402 from corrosion and damage by liquid, prolong the service life and improve the overall reliability and stability, but also can simplify the operation process, reduce the adjustment and inspection of the medical staff during the operation process, and improve the operation convenience.

[0034] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments described. Obviously, according to the content of the present application, many modifications and changes can be made. The present application is selected and described in detail, in order to better explain the principles and practical application of the present application, so that those skilled in the art can well understand and use the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A high-flow anti-bend guiding catheter, comprising a main body (1), wherein an infusion tube (2) is slidably connected to the inside of the main body (1), one end of the infusion tube (2) is fixedly connected to a round head (6), and a liquid outlet hole (3) is equidistantly provided in an annular manner on one side of the infusion tube (2) near the round head (6), characterized in that: It also includes an infusion area adjustment mechanism and a blockage clearing mechanism; The infusion area adjustment mechanism includes a limiting column (402), the limiting column (402) is slidably connected to the inside of the infusion tube (2) near the liquid outlet (3), the limiting column (402) is rotatably connected to a connecting column (401) at one end away from the round head (6), the connecting column (401) passes through the infusion tube (2), and the outer surface of the connecting column (401) is located outside the infusion tube (2) and is fixedly connected to a connecting frame (403), and the infusion area adjustment mechanism is used to block different numbers of liquid outlets (3); The blockage cleaning mechanism is used to clean blockages inside the liquid outlet hole (3).

2. A high flow rate anti-kink guiding catheter according to claim 1, characterized in that: The connecting frame (403) is fixedly connected to a ring (404) on one side close to the main body (1); the ring (404) is sleeved on the outer surface of the infusion tube (2); the outer surface of the infusion tube (2) is fixedly connected to a fixing plate (405); the ring (404) is slidably connected to the fixing plate (405).

3. The high-flow anti-kink guiding catheter according to claim 2, characterized in that: Positioning holes (406) are equidistantly formed on the upper end surface of the fixing plate (405), and the gaps between the positioning holes (406) are the same as the gaps between the liquid outlet holes (3). Positioning posts (407) are slidably connected to the upper surface of the outer surface of the ring (404), and the positioning posts (407) and the positioning holes (406) are mutually engaged.

4. The high-flow anti-kink guiding catheter according to claim 3, characterized in that: The upper end of the positioning column (407) is fixedly connected to a fixed block (408), and both sides of the fixed block (408) are rotatably connected to a lifting plate (409), and the side of the lifting plate (409) away from the fixed block (408) is rotatably connected to a pressing plate (410), and the pressing plates (410) are respectively located on both sides of the ring (404).

5. The high-flow anti-kink guiding catheter according to claim 4, characterized in that: The pressing plate (410) is fixedly connected to an extension column (412) at one end close to the circular ring (404), and a hollow column (411) is fixedly connected to the outer surface of the circular ring (404) close to the extension column (412). The extension column (412) is slidably connected to the hollow column (411).

6. The high-flow anti-kink guiding catheter according to claim 5, characterized in that: The end of the extension column (412) close to the hollow column (411) is fixedly connected to the spring (413), and the end of the spring (413) away from the extension column (412) is fixedly connected to the inside of the hollow column (411).

7. The high-flow anti-kink guiding catheter according to claim 1, characterized in that: The blockage cleaning mechanism comprises an extrusion disc (503), the extrusion disc (503) being slidably connected to the inside of the limiting column (402), the limiting column (402) being symmetrically provided with an air inlet (501) on one side close to the connecting column (401), the outer surface of the limiting column (402) being provided with an annular air outlet (502) close to the air inlet (501), the size of the air outlet (502) being consistent with that of the liquid outlet (3), and a one-way valve being provided inside both the air inlet (501) and the air outlet (502).

8. The high-flow anti-kink guiding catheter according to claim 7, characterized in that: The extrusion disc (503) is sleeved on the outer surface of the connecting column (401), and a reciprocating groove (504) is provided on the outer surface of the connecting column (401) near the extrusion disc (503). A sphere (505) is slidably connected in the reciprocating groove (504), and the sphere (505) is fixedly connected to the inside of the extrusion disc (503).

9. The high-flow anti-kink guiding catheter according to claim 8, characterized in that: The blockage cleaning mechanism also includes a knob (506), which is sleeved on one end of the connecting column (401) close to the connecting frame (403), and a sliding groove (510) is provided on the outer surface of the connecting column (401) close to the knob (506), and a slider (511) is slidably connected in the sliding groove (510), and the slider (511) is fixedly connected in the knob (506), and a vertical plate (507) is fixedly connected above the outer surface of the knob (506), and a clamping column (508) is fixedly connected to the side of the vertical plate (507) close to the connecting frame (403), and a connecting plate (509) is fixedly connected to the upper end surface of the connecting frame (403), and the clamping column (508) passes through and is clamped on the connecting plate (509).

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