High flow, kink resistant, guide catheter

Abstract

The application discloses a high-flow anti-bending guide catheter, and relates to the technical field of medical catheters, which comprises a main pipe body, a transfusion pipe is slidably connected in the main pipe body, a round head is fixedly connected to one end of the transfusion pipe, liquid outlet holes are equidistantly arranged on the side of the transfusion pipe close to the round head, and a transfusion area adjusting mechanism and a blockage cleaning mechanism are further included. The transfusion area adjusting mechanism comprises a limiting column which is slidably connected to the transfusion pipe close to the liquid outlet hole, a connecting column is rotatably connected to the end of the limiting column away from the round head, the connecting column penetrates the transfusion pipe, a connecting frame is fixedly connected to the outer surface of the connecting column outside the transfusion pipe, the limiting column can be driven to slide in the transfusion pipe, the liquid outlet holes in different areas can be blocked, and the transfusion area of the liquid outlet holes can be changed. Medical staff can flexibly adjust the transfusion area according to specific operation scenes and requirements, ensure that the liquid can be accurately delivered to the target position, and improve the accuracy and efficiency of the operation.

Description

Technical Field

[0001] This invention relates to the field of medical catheter technology, specifically a high-flow, anti-bend guiding catheter. Background Technology

[0002] In the field of vascular interventional therapy, the guiding catheter is a key medical device whose performance directly affects the smooth progress of the operation and the treatment effect of the patient. In vascular interventional surgery, such as coronary angiography and stent implantation, the guiding catheter is required to have a high flow rate of fluid delivery to ensure that contrast agents and other fluids can be injected into the blood vessels quickly and evenly, thereby clearly displaying the vascular structure and providing accurate image guidance for the surgical operation.

[0003] A high-flow, anti-bend guiding catheter disclosed in patent CN208301962U includes a tube body with an injection chamber inside. A guide head is inclinedly arranged at the front end of the tube body, and a guide wire chamber is arranged inside the guide head. The guide wire chamber extends into the tube body and has a spiral structure, which is wound around the outside of the injection chamber. The end of the guide wire chamber extends to the rear end of the tube body and is closed. A guide wire is arranged inside the guide wire chamber. A press-type split locking connector is fixedly connected to the front end of the tube body, and an outlet head is fixedly arranged at the rear end of the tube body. The spiral structure of the guide wire chamber, in conjunction with the guide wire, can increase the overall toughness and flexibility of the tube body, allowing for a variable travel path and reducing damage to tissues or blood vessels. This effectively solves problems such as kinking, breakage, and low flow rate.

[0004] While the above methods can increase the toughness and flexibility of the main body, the infusion area of ​​the infusion head cannot be adjusted. In different surgical scenarios, medical staff not only need different infusion areas to meet the surgical requirements, but infusion heads with fixed infusion areas cannot meet this diverse need, resulting in reduced surgical efficiency or poor surgical results. Moreover, different patients have different vascular conditions (such as blood vessel diameter, elasticity of blood vessel walls, etc.), and infusion heads with fixed infusion areas cannot adapt to these differences. In some cases, a fixed flow rate may cause the fluid to be delivered too fast or too slow, putting unnecessary pressure on the blood vessels or affecting the precision of the surgery.

[0005] Therefore, this invention proposes a high-flow, anti-bend guiding catheter to solve the above problems. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a high-flow, anti-bend guiding catheter that effectively solves the problems in existing technologies.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention can be accomplished through the following technical solutions:

[0010] A high-flow, anti-bend guiding catheter includes a main body with an infusion tube slidably connected through it. One end of the infusion tube is fixedly connected to a round head. The infusion tube has equidistantly spaced outlet holes on its side near the round head. The catheter also includes an infusion zone adjustment mechanism and a blockage removal mechanism. The infusion zone adjustment mechanism includes a limiting post slidably connected inside the infusion tube near the outlet holes. A connecting post is rotatably connected to the end of the limiting post away from the round head, penetrating the infusion tube. A connecting bracket is fixedly connected to the outer surface of the connecting post outside the infusion tube. The infusion zone adjustment mechanism is used to block different numbers of outlet holes, and the blockage removal mechanism is used to remove blockages inside the outlet holes.

[0011] As a further embodiment of the present invention: a ring is fixedly connected to the side of the connecting frame near the main tube body, the ring is sleeved on the outer surface of the infusion tube, a fixing plate is fixedly connected to the outer surface of the infusion tube, and the ring is slidably connected to the fixing plate.

[0012] As a further embodiment of the present invention: positioning holes are provided at equal intervals on the upper surface of the fixing plate, the gap between the positioning holes is the same as the gap between the liquid outlet holes, and a positioning post is slidably connected through the outer surface of the ring, the positioning post and the positioning hole are engaged with each other.

[0013] As a further embodiment of the present invention: a fixing block is fixedly connected to the upper end of the positioning column, and a lifting plate is rotatably connected to both sides of the fixing block. A pressing plate is rotatably connected to the side of the lifting plate away from the fixing block, and the pressing plates are respectively located on both sides of the ring.

[0014] As a further embodiment of the present invention: each of the pressing discs is fixedly connected to an extension post near the end of the ring, and each of the outer surfaces of the rings is fixedly connected to a hollow post near the extension post, and each of the extension posts is slidably connected to the hollow post.

[0015] As a further aspect of the present invention: each of the extension columns is fixedly connected to a spring at the end near the hollow column, and the springs are fixedly connected to the interior of the hollow column at the end away from the extension column.

[0016] As a further aspect of the present invention: the blockage clearing mechanism includes a squeezing disc, which is slidably connected to a limiting post. The limiting post has symmetrical air inlets on the side near the connecting post, and an air outlet is annularly formed on the outer surface of the limiting post near the air inlets. The size of the air outlet is the same as that of the liquid outlet. Both the air inlets and the air outlets are equipped with one-way valves.

[0017] As a further aspect of the present invention: the extrusion disc is sleeved on the outer surface of the connecting column, and a reciprocating groove is provided on the outer surface of the connecting column near the extrusion disc. A ball is slidably connected in the reciprocating groove, and the ball is fixedly connected inside the extrusion disc.

[0018] As a further aspect of the present invention: the blockage clearing mechanism further includes a knob, the knob being sleeved on one end of the connecting column near the connecting frame, a groove being provided on the outer surface of the connecting column near the knob, a slider being slidably connected in the groove, the slider being fixedly connected inside the knob, a vertical plate being fixedly connected above the outer surface of the knob, a locking post being fixedly connected on the side of the vertical plate near the connecting frame, a connecting plate being fixedly connected to the upper end face of the connecting frame, and the locking post being inserted and locked onto the connecting plate.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, the present invention provides a high-flow, anti-bend guiding catheter, which has the following beneficial effects:

[0021] 1. The infusion area adjustment mechanism allows the limiting column to slide within the infusion tube, blocking different outlets and changing the infusion area. Medical staff can flexibly adjust the infusion area according to specific surgical scenarios and needs, ensuring that the fluid is accurately delivered to the target location, improving the precision and efficiency of the surgery. Furthermore, different patients have different vascular conditions (such as blood vessel diameter and elasticity of the blood vessel wall). By adjusting the infusion area, these differences can be better accommodated, reducing damage to blood vessels and improving the safety of the surgery. In addition, by adjusting the infusion area, the flow rate of the fluid can be more precisely controlled, avoiding the fluid delivery being too fast or too slow due to a fixed flow rate, reducing unnecessary pressure on blood vessels, and improving the precision of the surgery.

[0022] By using a drive limiting post to completely cover the outlet hole, dust and impurities can be prevented from entering the infusion tubing during storage. This maintains the cleanliness and sterility of the infusion tubing, significantly reducing the risk of postoperative infection and improving surgical safety. Furthermore, preventing dust and impurities from entering protects the internal mechanical components and structure of the infusion tubing, reducing mechanical failures caused by contamination and extending its service life.

[0023] 2. The positioning post and positioning hole can fix the position of the limiting post after it has moved. This not only ensures that the limiting post is accurately fixed after it has moved to the designated position, avoiding inaccurate infusion area due to positional deviation, but also prevents the limiting post from shifting due to external force or fluid pressure during the operation. Moreover, medical staff can quickly move the limiting post to the required position and fix it through the positioning post and positioning hole, reducing operation time and complexity. Once the limiting post is fixed, there is no need for frequent adjustments, which improves the efficiency and smoothness of the operation.

[0024] By setting the same spacing between the limiting hole and the outlet hole, medical staff can accurately understand the position of the limiting column to block the outlet hole in the designated area without complicated measurement or calculation, which improves the accuracy and efficiency of the operation, reduces the time for adjusting and confirming the position, simplifies the operation process, and the intuitive visual feedback reduces the misoperation caused by inaccurate position judgment, thus improving the safety and reliability of the surgery.

[0025] 3. The built-in blockage-clearing mechanism drives the squeezing disc to eject air from the inside of the fluid outlet, clearing blockages inside the outlet. This not only effectively removes impurities and blood clots from the outlet, reducing the risk of blockage and ensuring unobstructed flow of the infusion tubing, but also extends its lifespan, reduces the frequency of catheter replacement due to blockage, and lowers medical costs. Furthermore, during surgery, catheter blockage can cause surgical interruptions, requiring cleaning or replacement of the catheter. The automatic cleaning function can reduce such interruptions, improving the continuity and efficiency of the surgery.

[0026] 4. The interlocking of the clamping post and connecting plate limits the position of the squeezing plate, ensuring it fits snugly against the air inlet. This prevents the infusion tubing from entering the limiting post through the air inlet during fluid delivery. This not only protects the internal mechanical components of the limiting post from corrosion and damage by the liquid, extending their service life and improving overall reliability and stability, but also simplifies the operation process by reducing adjustments and checks required by medical personnel, thus enhancing operational convenience. Attached Figure Description

[0027] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the infusion tube near the outlet hole of the present invention;

[0030] Figure 3This is a schematic diagram of the internal structure of the limiting post of the present invention;

[0031] Figure 4 This is a schematic diagram of the connection structure between the connecting column and the extrusion plate of the present invention;

[0032] Figure 5 This is a schematic diagram of the connection structure between the ring and the connecting post of the present invention;

[0033] Figure 6 For the present invention Figure 5 Enlarged structural diagram of region A in the middle;

[0034] Figure 7 This is a schematic diagram of the connection structure between the infusion tube and the annulus of the present invention;

[0035] Figure 8 This is a schematic diagram of the connection structure between the pressing plate and the hollow column of the present invention;

[0036] Figure 9 This is a schematic diagram of the connection structure between the connecting column and the knob of the present invention.

[0037] In the diagram: 1. Main tube; 2. Infusion tube; 3. Infusion port;

[0038] 401. Connecting post; 402. Limiting post; 403. Connecting frame; 404. Ring; 405. Fixing plate; 406. Positioning hole; 407. Positioning post; 408. Fixing block; 409. Lifting plate; 410. Pressing plate; 411. Hollow post; 412. Extension post; 413. Spring;

[0039] 501. Air inlet; 502. Air outlet; 503. Extrusion plate; 504. Reciprocating groove; 505. Sphere; 506. Knob; 507. Vertical plate; 508. Locking post; 509. Connecting plate; 510. Slide groove; 511. Slider;

[0040] 6. Round head. Detailed Implementation

[0041] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] This embodiment provides a high-flow, anti-bending guiding catheter, such as... Figure 1 - Figure 9As shown, the device includes a main body 1, through which an infusion tube 2 is slidably connected. One end of the infusion tube 2 is fixedly connected to a round head 6. The infusion tube 2 has outlet holes 3 equidistantly arranged in an annular pattern on the side near the round head 6. The device also includes an infusion area adjustment mechanism and a blockage removal mechanism. The infusion area adjustment mechanism includes a limiting post 402, which is slidably connected to the inside of the infusion tube 2 near the outlet hole 3. The end of the limiting post 402 away from the round head 6 is rotatably connected to a connecting post 401, which passes through the infusion tube 2. A connecting bracket 403 is fixedly connected to the outer surface of the connecting post 401 outside the infusion tube 2. The infusion area adjustment mechanism is used to block different numbers of outlet holes 3.

[0043] In this embodiment, as Figure 7 As shown, a ring 404 is fixedly connected to the side of the connecting frame 403 near the main body 1. The ring 404 is sleeved on the outer surface of the infusion tube 2. A fixing plate 405 is fixedly connected to the outer surface of the infusion tube 2. The ring 404 is slidably connected to the fixing plate 405. When the ring 404 is moved to slide on the fixing plate 405, it can drive the connecting frame 403 to move synchronously.

[0044] In this embodiment, as Figure 7 As shown, positioning holes 406 are equidistantly provided on the upper 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. A positioning post 407 is slidably connected through the outer surface of the ring 404. The positioning post 407 and the positioning hole 406 are engaged with each other. By engaging the positioning post 407 and the positioning hole 406 with each other, the ring 404 can be fixed at a specified position on the upper surface of the fixing plate 405.

[0045] In this embodiment, as Figure 7 As shown, a fixing block 408 is fixedly connected to the upper end of the positioning column 407. A lifting plate 409 is rotatably connected to both sides of the fixing block 408. A pressing plate 410 is rotatably connected to the side of the lifting plate 409 away from the fixing block 408. The pressing plates 410 are located on both sides of the ring 404. When the pressing plates 410 on both sides are pressed and brought closer to each other, the lifting plate 409 can push the fixing block 408 to drive the positioning column 407 to rise synchronously.

[0046] In this embodiment, as Figure 7 and Figure 8 As shown, each end of the pressing plate 410 near the ring 404 is fixedly connected to an extension post 412. Each side of the outer surface of the ring 404 near the extension post 412 is fixedly connected to a hollow post 411. The extension posts 412 are slidably connected to the hollow post 411. When pressure is applied to the pressing plate 410, the extension posts 412 will be pushed into the hollow post 411.

[0047] In this embodiment, as Figure 8As shown, each of the extension columns 412 is fixedly connected to a spring 413 at the end near the hollow column 411, 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 subjected to force and slides into the hollow column 411, it will compress the spring 413. When the force on the extension column 412 disappears, the rebound force of the spring 413 can push the extension column 412 to slide out automatically from the inside of the hollow column 411.

[0048] In existing technologies, the infusion area of ​​the infusion head cannot be adjusted. However, in different surgical scenarios, medical staff need different infusion areas to meet surgical requirements. Infusion heads with fixed infusion areas cannot meet this diverse need, leading to reduced surgical efficiency or poor surgical outcomes. Moreover, different patients have different vascular conditions (such as blood vessel diameter and elasticity of blood vessel walls), and infusion heads with fixed infusion areas cannot adapt to these differences. In some cases, a fixed flow rate can cause the fluid to be delivered too fast or too slow, putting unnecessary pressure on the blood vessels or affecting the precision of the surgery. Compared with existing technologies, the limiting column 402 can be driven to slide within the infusion tube 2, allowing for adjustment of different infusion areas. By blocking the outlet 3 in the area, the infusion area of ​​the outlet 3 is changed. Medical staff can not only flexibly adjust the infusion area according to the specific surgical scenario and needs, ensuring that the fluid can be accurately delivered to the target location, thus improving the accuracy and efficiency of the surgery, but also better adapt to the differences in vascular conditions (such as vascular diameter, elasticity of vascular walls, etc.) among different patients. By adjusting the infusion area, damage to blood vessels can be reduced, the safety of the surgery can be improved, and the flow rate of the fluid can be more precisely controlled, avoiding the fluid delivery being too fast or too slow due to a fixed flow rate, reducing unnecessary pressure on blood vessels, and improving the accuracy of the surgery.

[0049] By driving the limiting post 402 to completely cover the outlet hole 3, it is possible to prevent dust and impurities from entering the infusion tube 2 through the outlet hole 3 during storage. This keeps the infusion tube 2 clean and sterile, and prevents external contaminants from entering the infusion tube 2, which can significantly reduce the risk of postoperative infection and improve the safety of the operation. Moreover, preventing dust and impurities from entering can protect the internal mechanical components and structure of the infusion tube 2, reduce mechanical failures caused by contamination, and extend the service life of the infusion tube 2.

[0050] At other levels, this embodiment also provides a blockage removal mechanism for clearing blockages inside the liquid outlet 3, such as... Figure 1 - Figure 6 , Figure 9As shown, the blockage removal mechanism includes a squeezing disc 503, which is slidably connected to a limiting post 402. The limiting post 402 has symmetrical air inlets 501 on the side near the connecting post 401. The outer surface of the limiting post 402 has an annular air outlet 502 near the air inlet 501. The size of the air outlet 502 is the same as that of the liquid outlet 3. Both the air inlet 501 and the air outlet 502 are equipped with one-way valves.

[0051] In this embodiment, as Figure 4 As shown, the extrusion plate 503 is sleeved on the outer surface of the connecting column 401. A reciprocating groove 504 is provided on the outer surface of the connecting column 401 near the extrusion plate 503. A ball 505 is slidably connected in the reciprocating groove 504. The ball 505 is fixedly connected inside the extrusion plate 503. When the connecting column 401 rotates, the extrusion plate 503 can be moved horizontally back and forth on the outer surface of the connecting column 401 through the reciprocating groove 504 and the ball 505.

[0052] In this embodiment, as Figure 6 and Figure 9 As shown, the blockage clearing mechanism also includes a knob 506, which is sleeved on the end of the connecting post 401 near the connecting frame 403. A groove 510 is formed on the outer surface of the connecting post 401 near the knob 506. A slider 511 is slidably connected within the groove 510 and is fixedly connected to the knob 506. A vertical plate 507 is fixedly connected above the outer surface of the knob 506. A locking post 508 is fixedly connected to the vertical plate 507 near the connecting frame 403. A connecting plate 509 is fixedly connected to the upper surface of the connecting frame 403. The post 508 is inserted and snapped onto the connecting plate 509. When the knob 506 is moved horizontally, it slides through the slider 511 and the groove 510, causing the knob 506 to move horizontally on the outer surface of the connecting post 401. At the same time, the knob 506 will drive the snap-on post 508 to move through the vertical plate 507, so that the snap-on post 508 snaps into the connecting plate 509 and separates from the connecting plate 509. When the knob 506 is rotated, the knob 506 will move the groove 510 through the slider 511, causing the connecting post 401 to rotate synchronously.

[0053] Compared with existing technologies, the automatic cleaning function can drive the squeezing disc 503 to eject air from the inside of the outlet hole 3 to clear blockages inside the outlet hole 3. This not only effectively removes impurities and blood clots from the outlet hole 3, reducing the risk of blockage and ensuring the smooth flow of the infusion tube 2, but also extends the service life of the infusion tube 2, reduces the frequency of catheter replacement due to blockage, and reduces medical costs. Furthermore, during surgery, catheter blockage can cause surgical interruptions, requiring cleaning or replacement of the catheter. The automatic cleaning function can reduce such interruptions and improve the continuity and efficiency of the surgery.

[0054] The overall working process and principles involved in the above embodiments are as follows:

[0055] During intravenous infusion using infusion tubing 2, when medical personnel need to adjust the infusion area of ​​the infusion port 3 on infusion tubing 2 according to needs or the patient's vascular condition, they first squeeze the pressure plates 410 on both sides of the circular ring 404, bringing the pressure plates 410 closer to the circular ring 404. Simultaneously, they push the extension column 412 connected to the side of the pressure plate 410 closest to the circular ring 404 into the hollow column 411, and compress the spring 413 connecting the extension column 412 and the hollow column 411. Since the upper end of the pressure plates 410 is rotatably connected to lifting plates 409, the two... A fixing block 408 is rotatably connected between the lifting plates 409. A positioning post 407 is fixedly connected to the lower end of the fixing block 408. Therefore, as the pressing plates 410 on both sides approach the ring 404, the lifting plates 409 can push the fixing block 408 to drive the positioning post 407 to slide vertically upward on the outer surface of the ring 404. At the same time, the positioning post 407 slides out from one of the positioning holes 406 opened on the upper end face of the fixing plate 405. After the positioning post 407 and the positioning hole 406 are completely separated, the medical staff can horizontally move the ring 404 on the fixing plate. As the ring 404 slides away from the main tube 1, a connecting frame 403 is fixedly connected to the side of the ring 404 away from the main tube 1. 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 synchronously through the connecting frame 403, and drive the limiting column 402 connected to the end of the connecting column 401 inside the infusion tube 2 to move, blocking the outlet hole 3 from inside the infusion tube 2, changing the infusion area of ​​the outlet hole 3. Medical staff can not only adjust the infusion area according to the specific situation... Depending on the surgical scenario and needs, the infusion area can be flexibly adjusted to ensure that the fluid can be accurately delivered to the target location, thereby improving the precision and efficiency of the surgery. Moreover, different patients have different vascular conditions (such as blood vessel diameter, elasticity of blood vessel walls, etc.). By adjusting the infusion area, these differences can be better adapted, reducing damage to blood vessels and improving the safety of the surgery. Furthermore, by adjusting the infusion area, the flow rate of the fluid can be more precisely controlled, avoiding the fluid delivery being too fast or too slow due to a fixed flow rate, reducing unnecessary pressure on blood vessels, and improving the precision of the surgery.

[0056] After the limiting post 402 has moved, the operator can release the pressing plates 410 on both sides. The spring 413 connecting the extension post 412 and the hollow post 411 will then push the extension post 412 to slide automatically out of the hollow post 411, causing the pressing plate 410 to move away from the ring 404. During the reverse movement of the pressing plate 410, the pressing plate 410, through the lifting plate 409 and the fixing block 408, can pull the positioning post 407 to automatically descend and re-engage into the other positioning holes 406 on the upper surface of the fixing plate 405, thus fixing the position of the ring 404. After the ring 404 is fixed... The ring 404, through the connecting bracket 403 and the connecting column 401, can fix the position of the limiting column 402. This not only ensures that the limiting column 402 can be accurately fixed after being moved to the designated position, avoiding inaccurate infusion area due to positional deviation, but also prevents the limiting column 402 from shifting due to external force or fluid pressure during the operation. Furthermore, 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 operation time and complexity. Once the limiting column 402 is fixed, there is no need for frequent adjustments, improving the efficiency and smoothness of the operation.

[0057] During the process of adjusting the horizontal movement of the limiting post 402 to block the discharge hole 3, since the spacing between the positioning holes 406 and the spacing between the discharge holes 3 are the same, medical personnel can determine the area of ​​the discharge hole 3 blocked by the limiting post 402 by observing the position of the positioning post 407 that is inserted into the positioning hole 406 while driving the limiting post 402 to move. This not only makes it easier for medical personnel to accurately understand the position of the limiting post 402 to block the discharge hole 3 in the designated area without complicated measurement or calculation, thus improving the accuracy and efficiency of the operation, reducing the time for adjusting and confirming the position, and simplifying the operation process, but also reduces the misoperation caused by inaccurate position judgment due to intuitive visual feedback, thereby improving the safety and reliability of the surgery.

[0058] When the outlet hole 3 on the infusion tube 2 becomes blocked, medical personnel can remove the infusion tube 2 from the patient's body and then drive the limiting post 402 to slide inside the infusion tube 2, so that the vent holes 502 on the outer surface of the limiting post 402 are aligned with each outlet hole 3 in turn. After the vent holes 502 are aligned with the outlet holes 3, the staff can pull the knob 506 horizontally. Through the sliding connection between the slider 511 connected inside the knob 506 and the sliding groove 510 on the outer surface of the connecting post 401, the knob 506 can be moved horizontally away from the infusion tube 2 on the outer surface of the connecting post 401. At the same time, through the vertical plate 5 connected to the outer surface of the knob 506... 07. The locking post 508 moves horizontally synchronously, causing it to slide out of the connecting plate 509 connected to the upper end of the connecting frame 403 and separate from the connecting plate 509. After the locking post 508 and the connecting plate 509 are completely separated, the medical staff can turn the knob 506 to move the sliding groove 510 through the slider 511, causing the connecting post 401 to rotate. This causes the connecting post 401 to rotate on the infusion tube 2 and the limiting post 402. Since the outer surface of the connecting post 401 has a reciprocating groove 504 on the side inside the limiting post 402, a ball 505 is slidably connected in the reciprocating groove 504. The ball 505 is fixedly connected to the squeezing plate. At the center of 503, as the connecting column 401 rotates, it changes the position of the reciprocating groove 504, causing the reciprocating groove 504 to compress the ball 505. Simultaneously, the ball 505 moves along the path of the reciprocating groove 504, driving the extrusion disc 503 to reciprocate horizontally within the limiting column 402. When the extrusion disc 503 moves away from the air inlet 501 within the limiting column 402, it draws air from outside the limiting column 402 into its interior. Conversely, when the extrusion disc 503 moves horizontally closer to the air inlet 501, it blows air out of the limiting column 402 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 the same size. Therefore, when gas is discharged from the air outlet 502, it will be discharged from the liquid outlet 3 at the same time, which will remove the blockage inside the liquid outlet 3. 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 reduce the interruption of surgery caused by catheter blockage during operation, which requires cleaning or replacement of the catheter. The automatic cleaning function can reduce such interruptions and improve the continuity and efficiency of the operation.

[0059] After cleaning the outlet hole 3 on the infusion tube 2, medical staff can rotate knob 506 to move the locking pin 508 to the top via vertical plate 507. Then, they can push knob 506 horizontally in the opposite direction towards connecting plate 509, causing knob 506 to move the locking pin 508 back into the connecting plate 509 via vertical plate 507. After the locking pin 508 and connecting plate 509 are engaged, knob 506 will be unable to rotate. At this time, the squeezing disc 503 inside the limiting post 402 will fit against the limiting post 402 near the air inlet 50. On one side of the inner wall, the air inlet 501 is blocked to prevent the infusion tube 2 from entering the limiting post 402 through the air inlet 501 during the delivery of liquid. This not only protects the mechanical parts inside the limiting post 402 from corrosion and damage by the liquid, extending its service life and improving the overall reliability and stability, but also simplifies the operation process through the limiting design of the locking post 508 and the connecting plate 509, reducing the adjustments and checks that medical staff need to make during the operation and improving the convenience of operation.

[0060] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full 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 through the main body (1), one end of the infusion tube (2) is fixedly connected to a round head (6), and the infusion tube (2) has annularly spaced outlet holes (3) near the round head (6), characterized in that, It also includes an infusion zone adjustment mechanism and a blockage removal mechanism; The infusion area adjustment mechanism includes a limiting post (402), which is slidably connected to the inside of the infusion tube (2) near the outlet hole (3). A connecting post (401) is rotatably connected to the end of the limiting post (402) away from the round head (6). The connecting post (401) passes through the infusion tube (2). A connecting bracket (403) is fixedly connected to the outer surface of the connecting post (401) outside the infusion tube (2). The infusion area adjustment mechanism is used to block different numbers of outlet holes (3). The blockage removal mechanism includes a squeezing disc (503), which is slidably connected to a limiting post (402). The limiting post (402) has symmetrical air inlets (501) on the side near the connecting post (401). The outer surface of the limiting post (402) near the air inlets (501) has annular air outlets (502). The size of the air outlets (502) is the same as that of the liquid outlet (3). Both the air inlets (501) and the air outlets (502) are equipped with one-way valves. The squeezing disc (503) is sleeved on the outer surface of the connecting post (401). The outer surface of the connecting post (401) near the squeezing disc (503) has a reciprocating groove (504). A ball (505) is slidably connected in the reciprocating groove (504). The ball (505) is fixedly connected to the inside of the squeezing disc (503). The blockage removal mechanism is used to remove blockages inside the liquid outlet (3).

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

3. A high-flow, anti-bend guiding catheter according to claim 2, characterized in that, The upper surface of the fixed plate (405) is provided with positioning holes (406) at equal intervals. The gap between the positioning holes (406) is the same as the gap between the liquid outlet holes (3). A positioning post (407) is slidably connected above the outer surface of the ring (404). The positioning post (407) and the positioning hole (406) are engaged with each other.

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

5. A high-flow, anti-bend guiding catheter according to claim 4, characterized in that, Each of the pressing discs (410) has an extension column (412) fixedly connected to one end near the ring (404). A hollow column (411) is fixedly connected through the outer surface of the ring (404) near the extension column (412). The extension column (412) is slidably connected through the hollow column (411).

6. A high-flow, anti-bend guiding catheter according to claim 5, characterized in that, Each of the extension columns (412) is fixedly connected to a spring (413) at the end near the hollow column (411), 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. A high-flow, anti-bend guiding catheter according to claim 1, characterized in that, The blockage clearing mechanism also includes a knob (506), which is sleeved on one end of the connecting post (401) near the connecting frame (403). A groove (510) is provided on the outer surface of the connecting post (401) near the knob (506). A slider (511) is slidably connected in the groove (510). The slider (511) is fixedly connected in the knob (506). A vertical plate (507) is fixedly connected above the outer surface of the knob (506). A locking post (508) is fixedly connected on the side of the vertical plate (507) near the connecting frame (403). A connecting plate (509) is fixedly connected to the upper end face of the connecting frame (403). The locking post (508) is inserted and locked onto the connecting plate (509).

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