Intelligent debris capturing and blood flow maintaining device for coronary rotary atherectomy

Abstract

The invention relates to the technical field of medical apparatus and instruments, and discloses an intelligent debris capturing and blood flow maintaining device for coronary artery rotary atherectomy, which comprises a capturing mechanism and a guide wire, and is characterized in that a capturing assembly is positioned outside the guide wire, a rotary atherectomy catheter is sleeved outside the guide wire, a rotary atherectomy head is mounted at one end of the rotary atherectomy catheter, and the other end of the rotary atherectomy catheter is provided with a blood flow maintaining device. The rotary grinding head is arranged outside the guide wire in a sleeving mode, a blood vessel expansion mechanism is arranged on the outer side of the rotary grinding head, the capturing mechanism comprises a capturing bin, a plug disc is fixedly connected to one end of the capturing bin, and a supporting frame is fixedly connected to the interior of the capturing bin. The semi-permeable membrane and a special structure are used for capturing debris, the arc-shaped plate is matched for expanding blood vessels, smooth blood flow is guaranteed, after an operation is finished, the device and most debris can be taken out by pulling the guide wire, a small amount of missed debris can be swallowed by macrophages or enter a capturing bin to be collected, compared with traditional negative pressure adsorption, a large amount of blood is prevented from being lost, and the operation safety is improved; the postoperative recovery of the patient is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy. Background Art

[0002] Coronary atherosclerotic heart disease is a common cardiovascular disease that poses a serious threat to human health. Coronary rotational atherectomy, as an important means of treating severe coronary artery calcification, can effectively remove hard plaques in blood vessels and improve vascular stenosis. During the coronary rotational atherectomy process, a large amount of plaque debris is generated. If these debris are not properly handled, they can easily flow with the blood flow to distal blood vessels, causing vascular embolism and triggering serious complications such as myocardial infarction. Therefore, an effective debris capture device has become a key link in the safe implementation of coronary rotational atherectomy. At present, the debris capture devices for coronary rotational atherectomy used in clinical practice are mainly designed based on the principle of negative pressure adsorption, hoping to remove debris by generating negative pressure.

[0003] Existing debris capture devices based on negative pressure adsorption are usually composed of a negative pressure generator, a connecting pipeline and a suction catheter. The negative pressure generator generates negative pressure, which is transmitted to the suction catheter through the connecting pipeline. The head of the suction catheter is placed in the blood vessel near the atherectomy site. When the atherectomy head grinds the plaque to produce debris, theoretically, under the action of negative pressure, the debris will be sucked into the suction catheter and then collected in a specific container. In terms of vascular dilation to maintain blood flow, a balloon is generally used to dilate the blood vessels before atherectomy. The balloon is delivered to the lesion site through the catheter and is inflated to expand the blood vessels to provide a certain space for the atherectomy operation. However, during the atherectomy process, the balloon cannot continuously and effectively maintain the vascular dilation state, and the balloon expansion and debris capture systems are independent of each other and lack synergy.

[0004] In actual surgical scenarios, existing negative pressure adsorption debris capture devices have exposed numerous problems. For example, during a coronary atherectomy procedure, due to severe vascular calcification, the amount of debris generated by the atherectomy was large. Although the negative pressure suction system was working at full capacity, due to inaccurate negative pressure control, the strong suction force caused a large amount of blood to be simultaneously extracted when aspirating the debris. This not only caused excessive blood loss for the patient, but also caused the negative pressure system to frequently clog, affecting the efficiency of debris capture. Ultimately, some debris still flowed into distal vessels, increasing the risk of vascular embolism. In addition, traditional balloon dilation cannot continuously maintain vascular dilation during atherectomy, resulting in poor blood flow during atherectomy and affecting cardiac blood supply. It also lacks coordination with the debris capture device, making it unable to efficiently capture debris while maintaining blood flow. The reason for this is that the negative pressure adsorption device lacks accurate identification and control of blood flow and debris, and each component operates independently without an overall coordinated design, making it difficult to adapt to the complex needs of coronary atherectomy surgery. Therefore, the present invention provides an intelligent debris capture and blood flow maintenance device for coronary atherectomy to address the shortcomings of the existing technology. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy, which solves the problems in the existing technology that the intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy can easily cause excessive blood loss in patients when capturing plaque debris, and it is difficult to dilate blood vessels to maintain blood flow during rotational atherectomy.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy, comprising a capture mechanism and a guide wire, characterized in that the capture component is located outside the guide wire, the outer sleeve of the guide wire is provided with a rotational atherectomy catheter, one end of the rotational atherectomy catheter is installed with a rotational atherectomy head, the rotational atherectomy head is provided on the outside of the guide wire, and a vascular expansion mechanism is provided on the outer side of the rotational atherectomy head.

[0007] Preferably, the capture mechanism includes a capture bin, one end of which is fixedly connected to a plug disc, the interior of which is fixedly connected to a support frame, four multi-stage electric telescopic rods are installed on the outside of the support frame, and one end of the multi-stage electric telescopic rod is fixedly connected to an arc plate.

[0008] Preferably, the outer side of the arc plate fits with the outer notch of the capture chamber, the inner side of the four arc plates is provided with a semipermeable membrane, a movable ring is provided at the center of the semipermeable membrane, and the inner side of the movable ring is slidably connected to the outer side of the support frame.

[0009] Preferably, a combination groove is provided on the outer side of the plug disc, the inner side of the combination groove is made of a magnet, one end of the guide wire is fixedly connected to a magnet block 1, the outer side of the magnet block 1 is engaged in the inside of the combination groove, and the contact surface between the magnet block 1 and the combination groove is of opposite poles.

[0010] Preferably, the vascular expansion mechanism includes a rotating ring and two supporting components, the outer side of the rotating ring is rotatably connected to the outer side of the atherectomy head, the outer side of the atherectomy head is fixedly connected to two telescopic guide rods, one end of the two telescopic guide rods is fixedly connected to a connecting ring, and the adjacent sides of the rotating ring and the connecting ring are fixedly connected to a tension spring.

[0011] Preferably, the two support assemblies are axially symmetrically arranged on the outside of the connecting ring, and the support assembly includes magnet block 2 and a rotating rod. One end of magnet block 2 is fixedly connected to the outside of the connecting ring, and one end of magnet block 2 is rotatably connected to the outside of the connecting ring. The portion of the rotating rod adjacent to magnet block 2 is made of magnetic material and has the same pole as magnet block 2.

[0012] Preferably, the other end of the rotating rod is fixedly connected to an arc-shaped support rod, the outer side of the rotating rod is fixedly connected to a fixing ring, the outer side of the fixing ring is fixedly connected to a pull rope, and the outer side of the connecting ring is fixedly connected to two guide frames.

[0013] Preferably, two mounting blocks are fixedly connected to one side of the connecting ring, a micro motor is installed inside the mounting block, the output end of the micro motor is fixedly connected to the winding rod, and one end of the pull rope is passed around the outside of the guide frame and fixedly connected to the outside of the winding rod.

[0014] The present invention provides an intelligent debris capturing and blood flow maintaining device for coronary rotational atherectomy.

[0015] It has the following beneficial effects:

[0016] 1. The present invention captures debris by utilizing a semipermeable membrane and a special structure. The semipermeable membrane can block debris while allowing blood to pass through. The curved plate supports the blood vessels to ensure smooth blood flow. After the operation, the guide wire can be pulled out to remove the device and most of the debris. A small amount of missed debris can be phagocytosed by macrophages or collected in the capture chamber. Compared with traditional negative pressure adsorption, it avoids large amounts of blood loss, improves surgical safety, and is beneficial to the patient's postoperative recovery.

[0017] 2. The present invention uses a unique strong magnetic connection design to achieve a rapid and stable connection between the capture mechanism and the vascular expansion mechanism, which can resist the impact of blood flow and the pulling force of device movement, ensuring the stable coordination of various components during surgery. During the vascular expansion and plaque grinding process, the various components work closely together. Under the action of the tension spring and magnetic force, the support component can be flexibly adjusted as the inner diameter of the blood vessel changes, continuously and effectively supporting the blood vessel, maintaining blood flow, creating good conditions for grinding with the atherectomy head, and reducing the risk of surgical complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the capture chamber of the present invention;

[0020] Figure 3 This is a schematic diagram of the support structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the rotating ring structure of the present invention;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 Schematic diagram of the rotating rod structure of the present invention.

[0024] Among them, 1. Capture chamber; 2. Stopper plate; 3. Support frame; 4. Multi-stage electric telescopic rod; 5. Arc plate; 6. Semipermeable membrane; 7. Movable ring; 8. Combination groove; 9. Guide wire; 10. Grinding catheter; 11. Grinding head; 12. Magnet block 1; 13. Rotating ring; 14. Telescopic guide rod; 15. Connecting ring; 16. Tension spring; 17. Rotating rod; 18. Arc support rod; 19. Magnet block 2; 20. Guide frame; 21. Fixed ring; 22. Pull rope; 23. Mounting block; 24. Winding rod. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Please see the attached Figure 1 -Attached Figure 6An embodiment of the present invention provides an intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy, comprising a capture mechanism and a guidewire 9. The capture assembly is located outside the guidewire 9, which is sheathed with a rotational atherectomy catheter 10. A rotational atherectomy head 11 is mounted on one end of the rotational atherectomy catheter 10. The rotational atherectomy head 11 is sheathed on the outside of the guidewire 9, and a vascular dilation mechanism is disposed on the outside of the rotational atherectomy head 11. The capture mechanism includes a capture chamber 1, which serves as the core component for debris collection. One end of the capture chamber 1 is closed by a plug disc 2, and a support frame 3 is fixedly connected to the interior of the capture chamber 1. The plug disc 2 is fixedly connected to one end of the capture chamber 1. A combination groove 8 is formed on the outside of the plug disc 2 and is made of a magnetic material. It forms a strong magnetic connection with a magnet block 12 fixedly connected to one end of the guidewire 9. This design ensures that the capture mechanism is connected to the guide wire 9 quickly and firmly, and because the contact surface of the magnet block 12 and the combined slot 8 is of opposite poles, the magnetic force is strong, which can resist the impact of blood flow in the blood vessels and the tension caused by the movement of the device during the operation, ensuring the stability of the overall structure. Four multi-stage electric telescopic rods 4 are installed on the outside of the support frame 3. The multi-stage electric telescopic rods 4 can accurately adjust the length according to the needs of the operation, and the support size can be adjusted intelligently. One end of the multi-stage electric telescopic rod 4 is fixedly connected to the arc plate 5. When the telescopic rod is extended, the arc plate 5 moves accordingly. The outer side of the arc plate 5 fits with the external notch of the capture chamber 1 to ensure the sealing effect. The inner side of the four arc plates 5 is provided with a semipermeable membrane 6. The semipermeable membrane 6 has a special selective permeability, which allows blood to pass through. Small molecules and blood cells can pass through, while plaque debris produced by grinding is blocked, achieving efficient debris capture without affecting the normal circulation of blood. A movable ring 7 is provided at the center of the semipermeable membrane 6, and the inner side of the movable ring 7 is slidably connected to the outer side of the support frame 3, so that the semipermeable membrane 6 can flexibly adapt when the arc plate 5 is expanded or contracted. When the arc plate 5 contracts, the movable ring 7 can be moved and involved in the semipermeable membrane 6 under the action of gravity, which can prevent the arc plate 5 from clamping the semipermeable membrane 6 and causing damage. A combination groove 8 is provided on the outer side of the plug disc 2, and the inner side of the combination groove 8 is made of magnets. One end of the guide wire 9 is fixedly connected to a magnet block 12, and the outer side of the magnet block 12 is engaged with the inside of the combination groove 8, and the contact surface of the magnet block 12 and the combination groove 8 is of opposite poles.The vascular expansion mechanism includes a rotating ring 13 and two support assemblies. The rotating ring 13 can be flexibly rotated and connected to the outside of the atherectomy head 11, providing a basis for the movement of the support assembly. The outside of the rotating ring 13 is rotatably connected to the outside of the atherectomy head 11. The outside of the atherectomy head 11 is fixedly connected to two telescopic guide rods 14, and one end of the two telescopic guide rods 14 is fixedly connected to the connecting ring 15. The adjacent sides of the rotating ring 13 and the connecting ring 15 are fixedly connected with a tension spring 16. The weak tension provided by the tension spring 16 can maintain the relative position relationship between the support assembly and the atherectomy head 11 when the atherectomy head 11 is working, and will not interfere with the supporting action of the support assembly on the blood vessel. During the process of atherectomy head 11 grinding plaque, the elasticity of the tension spring 16 can buffer the vibration and displacement of the support assembly to ensure the stability of the support. The two support assemblies are axially symmetrically arranged on the outside of the connecting ring 15. The support assembly includes a magnet block 19 and a rotating rod 17. One end of magnet block 19 is fixedly connected to the outside of connecting ring 15, and the other end of magnet block 19 is rotatably connected to the outside of connecting ring 15. The portion of rotating rod 17 adjacent to magnet block 19 is made of magnetic material and has the same polarity as magnet block 19. The rotation of rotating rod 17 is controlled by the principle of like poles repelling each other. The other end of rotating rod 17 is fixedly connected to arc-shaped support rod 18, which supports and expands the blood vessel wall when rotating rod 17 rotates. A fixing ring 21 is fixedly connected to the outside of rotating rod 17, and a pull rope 22 is fixedly connected to the outside of fixing ring 21. Two guide frames 20 are fixedly connected to the outside of the connecting ring 15. The guide frames 20 guide the pull rope 22, ensuring that the pull rope 22 operates stably during the winding or releasing process. Two mounting blocks 23 are fixedly connected to one side of the connecting ring 15. A micromotor is installed inside the mounting block 23. The micromotor can intelligently adjust the number of rotations of the rotating shaft to control the expansion range of the arc support rod 18 on the blood vessel wall. The output end of the micromotor is fixedly connected to the winding rod 24. One end of the pull rope 22 passes around the outside of the guide frame 20 and is fixedly connected to the outside of the winding rod 24. By adjusting the speed and direction of the micromotor, the support strength and range of the arc support rod 18 can be flexibly controlled, ensuring that the blood vessel wall is evenly stressed and avoiding localized excessive pressure that may cause blood vessel damage. At the same time, when the atherectomy head 11 abrades the plaque and causes the inner diameter of the blood vessel to change, the position of the arc support rod 18 can be adjusted in time to continuously maintain the blood vessel expansion state and ensure smooth blood flow.

[0027] Specifically, first, the capture chamber 1 and the guide wire 9 are placed in the blood vessel from both ends of the vascular plaque respectively, and the capture chamber 1 is placed at one end of the plaque to prepare for the subsequent capture of debris generated by grinding. The selection of its position must ensure that the debris can be effectively intercepted to prevent it from spreading with the blood flow to the distal blood vessel and causing embolism, and the guide wire 9 is sent into the blood vessel from the other end of the plaque and passes through the plaque. The role of the guide wire 9 is to provide guidance and connection basis for the entire device. It is like a bridge that enables various components to work together. After the guide wire 9 passes through the plaque, the magnet block 12 is inserted into the interior of the combination slot 8. Under the action of strong magnetic attraction, the guide wire 9 connects the capture mechanism and the vascular expansion mechanism into a whole. This strong magnetic connection method has many advantages. On the one hand, the connection process is fast. The invention is fast and convenient, which can save precious time during the operation; on the other hand, the connection is stable and reliable, and can resist the impact of blood flow in the blood vessels and the tension generated when the device moves during the subsequent operation, ensuring that the capture mechanism and the vascular expansion mechanism maintain a stable connection state during the entire operation, avoiding the influence of the surgical effect due to loose connection, and then start the two micro motors to drive the winding rod 24 to rotate, thereby pulling the pull rope 22 to drive the fixed ring 21 to move, so that the rotating rod 17 drives the arc-shaped support rod 18 to rotate. When the micro motor is started, the winding rod 24 rotates according to the set direction and speed, and the pull rope 22 is tightened under the action of the winding rod 24, thereby driving the fixed ring 21 to move. Since the fixed ring 21 is fixed on the rotating rod 17, the rotating rod 17 will rotate with the fixed ring 2 1 moves and rotates, so that the two arc-shaped support rods 18 will support the blood vessels, causing the blood vessels to expand to maintain blood flow, which can effectively increase the inner diameter of the blood vessels, improve blood flow conditions, and create good conditions for subsequent plaque grinding operations. At the same time, stable blood flow also helps to maintain normal blood supply to the heart, reducing the risk of complications such as myocardial ischemia in patients during surgery. At this time, the atherectomy head 11 can be started to grind the plaque. The atherectomy head 11 rotates at a high speed, and the abrasive particles on its surface can gradually grind the hard plaque. The tension of the tension spring 16 is relatively weak, and will not pull the arc-shaped support rod 18 in the supporting state when the atherectomy head 11 is grinding. This ensures that the dilated state of the blood vessels will not be disturbed when the atherectomy head 11 is working, and the arc-shaped support rod 18 can Continuously and stably support the blood vessel wall, maintain the expansion effect of the blood vessel, and ensure that the blood can flow continuously and smoothly. When a part of the plaque is polished away, the inner diameter of the blood vessel will change to a certain extent. At this time, the micro motor releases the traction on the pull rope 22, and the repulsive force between the magnet block 219 and the rotating rod 17 will cause the rotating rod 17 to rotate. Since the part close to the magnet block 219 and the rotating rod 17 is a magnet of the same pole, according to the principle of like poles repel, when the tension of the pull rope 22 disappears, the repulsive force will cause the rotating rod 17 to rotate automatically, so that the outer part of the arc-shaped support rod 18 will be out of contact with the blood vessel wall. The purpose of this step is to allow the support component to adapt to the change in the inner diameter of the blood vessel, and to avoid the arc-shaped support rod 18 from exerting excessive pressure on the blood vessel wall due to the reduction in the inner diameter of the blood vessel, causing blood vessel damage.Then, under the tension of the tension spring 16, the support assembly moves toward the position of the atherectomy head 11. The elasticity of the tension spring 16 allows the support assembly to move smoothly to the appropriate position to continue supporting the blood vessel. The micromotor is then activated again to allow the curved support rod 18 to support the blood vessel wall. By activating the micromotor again, the position and angle of the curved support rod 18 are adjusted so that it can effectively support the blood vessel wall again according to the change in the blood vessel's inner diameter, continuously maintaining the blood vessel's dilation state and ensuring normal blood flow. At the same time, the four multi-stage electric telescopic rods 4 inside the capture chamber 1 are activated, causing the curved plates 5 to drive the semipermeable membrane 6 to expand, thereby blocking the ground plaque debris. The multi-stage electric telescopic rods 4 can precisely control the movement distance of the curved plates 5, thereby evenly expanding the semipermeable membrane 6. The properties of the semipermeable membrane 6 allow blood to pass through. The four curved plates 5 can also expand the blood vessel wall and cooperate with the support assembly to ensure that the blood vessels at both ends of the plaque are expanded. This not only effectively blocks plaque debris and prevents it from entering the distal blood vessels, but also further improves blood flow in the blood vessels, ensuring smooth blood flow.

[0028] Working principle: First, the capture chamber 1 and the guide wire 9 are placed in the blood vessel from both ends of the vascular plaque respectively. After the guide wire 9 passes through the plaque, the magnet block 12 is inserted into the interior of the combined slot 8. Under the action of strong magnetic attraction, the guide wire 9 connects the capture mechanism and the vascular expansion mechanism into a whole. Then, the two micro motors are started to drive the winding rod 24 to rotate, thereby pulling the pull rope 22 to drive the fixed ring 21 to move, so that the rotating rod 17 drives the arc-shaped support rod 18 to rotate. In this way, the two arc-shaped support rods 18 will support the blood vessel, causing the blood vessel to expand to maintain blood flow. At this time, the atherectomy head 11 can be started to grind the plaque. The tension of the tension spring 16 is relatively weak and will not pull the arc-shaped support rod 18 in the supporting state when the atherectomy head 11 is grinding. When a part of the plaque is ground off, the micro motor releases the traction of the pull rope 22, and the repulsive force between the magnet block 2 19 and the rotating rod 17 will cause the rotating rod 17 to rotate, so that the outer part of the arc-shaped support rod 18 will be out of contact with the blood vessel wall. Then, under the tension of the tension spring 16, the support assembly will move toward the position of the grinding head 11, and then continue to start the micro motor to allow the arc support rod 18 to support the blood vessel wall. At the same time, the four multi-stage electric telescopic rods 4 inside the capture chamber 1 will be started to drive the arc plate 5 to drive the semipermeable membrane 6 to open to block the ground plaque debris. The characteristics of the semipermeable membrane 6 allow blood to pass through. The four arc plates 5 can also expand the blood vessel wall and cooperate with the support assembly to ensure that the blood vessels at both ends of the plaque are opened, so that the blood can flow smoothly. When all the plaques are ground, pulling the guide wire 9 can drag the entire device to move, and the semipermeable membrane 6 will move most of the plaque debris together. A small amount of missed debris will be phagocytosed by the macrophages in the blood vessels, and some debris will also enter the interior of the capture chamber 1 and be collected. Finally, it will be taken away from the blood vessel with the device. Compared with the traditional negative pressure adsorption capture method, it will not cause a large amount of blood loss in the patient and is safer.

[0029] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy, comprising a capture mechanism and a guide wire (9), characterized in that: The capture component is located outside the guide wire (9), the guide wire (9) is provided with a atherectomy catheter (10) on the outside, one end of the atherectomy catheter (10) is installed with a atherectomy head (11), the atherectomy head (11) is provided outside the guide wire (9), and a vascular expansion mechanism is provided on the outside of the atherectomy head (11).

2. The intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy according to claim 1, characterized in that: The capture mechanism comprises a capture chamber (1), one end of the capture chamber (1) is fixedly connected to a plug disc (2), the interior of the capture chamber (1) is fixedly connected to a support frame (3), four multi-stage electric telescopic rods (4) are installed on the outside of the support frame (3), and one end of the multi-stage electric telescopic rod (4) is fixedly connected to an arc plate (5).

3. The intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy according to claim 2, characterized in that: The outer sides of the arc-shaped plates (5) are fitted with the outer notches of the capture chamber (1); the inner sides of the four arc-shaped plates (5) are provided with semipermeable membranes (6); a movable ring (7) is provided at the center of the semipermeable membrane (6); the inner side of the movable ring (7) is slidably connected with the outer side of the support frame (3).

4. The intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy according to claim 2, characterized in that: A combination groove (8) is provided on the outer side of the plug disc (2), the inner side of the combination groove (8) is made of a magnet, one end of the guide wire (9) is fixedly connected to a magnet block (12), the outer side of the magnet block (12) is engaged with the inside of the combination groove (8), and the contact surface between the magnet block (12) and the combination groove (8) is of opposite poles.

5. The intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy according to claim 1, characterized in that: The vascular expansion mechanism comprises a rotating ring (13) and two supporting assemblies. The outer side of the rotating ring (13) is rotatably connected to the outer side of the atherectomy head (11). The outer side of the atherectomy head (11) is fixedly connected to two telescopic guide rods (14). One end of the two telescopic guide rods (14) is fixedly connected to a connecting ring (15). The adjacent sides of the rotating ring (13) and the connecting ring (15) are fixedly connected to a tension spring (16).

6. The intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy according to claim 5, characterized in that: The two support assemblies are axially symmetrically arranged on the outside of the connecting ring (15), and the support assembly includes a second magnet block (19) and a rotating rod (17). One end of the second magnet block (19) is fixedly connected to the outside of the connecting ring (15), and one end of the second magnet block (19) is rotatably connected to the outside of the connecting ring (15). The adjacent part of the rotating rod (17) and the second magnet block (19) is made of magnetic material and has the same pole as the second magnet block (19).

7. The intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy according to claim 6, characterized in that: The other end of the rotating rod (17) is fixedly connected to an arc-shaped support rod (18), the outer side of the rotating rod (17) is fixedly connected to a fixing ring (21), the outer side of the fixing ring (21) is fixedly connected to a pull rope (22), and the outer side of the connecting ring (15) is fixedly connected to two guide frames (20).

8. The intelligent debris capture and blood flow maintenance device for coronary rotational atherectomy according to claim 7, characterized in that: One side of the connecting ring (15) is fixedly connected to two mounting blocks (23), a micro motor is installed inside the mounting block (23), an output end of the micro motor is fixedly connected to a winding rod (24), and one end of the pull rope (22) is passed around the outside of the guide frame (20) and fixedly connected to the outside of the winding rod (24).

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