Coronary artery calcified plaque removing device capable of active rotary cutting and synchronous suction

Abstract

The invention discloses a coronary artery calcified plaque removing device capable of active rotary cutting and synchronous suction, and relates to the technical field of medical instruments.The coronary artery calcified plaque removing device comprises a machine body shell, an elastic pipe is fixedly connected to one end of the outer side of the machine body shell, and a drill bit is fixedly connected to one end of the elastic pipe; a transmission assembly and a cutter assembly are arranged between the drill bit and the transmission pipe fitting, a plurality of drainage key grooves are formed in the cutter assembly and formed in the outer side of the transmission pipe fitting, liquid is mixed with plaques cut down and smashed by the cutter assembly through rotation of the transmission pipe fitting, and the plaques form mixed liquid with good fluidity. The mixed liquid is good in flowability, the sewage pump pumps the mixed liquid through the first water guide piece, the multiple water guide holes and the suction pipe, due to the fact that the mixed liquid is good in flowability, the negative pressure needed for pumping the mixed liquid is low, it is guaranteed that plaques cleaned through cooperation of the cutter assembly and the drill bit are pumped out, and meanwhile blood vessel deformation caused by the negative pressure is avoided; and the possibility of injury of the cutter assembly to blood vessels is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a coronary artery calcified plaque removal device capable of active rotary cutting and simultaneous aspiration. Background Technology

[0002] Coronary calcification is a serious manifestation of coronary atherosclerosis (calcium salt deposition leads to plaque hardening and vascular stenosis). Its core treatment goal is to control plaque progression, reduce vascular stenosis, and prevent myocardial infarction, rather than simply "removing" it (once calcified plaques are formed, it is extremely difficult to completely eliminate them; clinically, the focus is on "improving blood supply and stabilizing plaques").

[0003] During the treatment of coronary calcified plaques, a rotary excision device is used to remove part of the plaque from the blood vessel. During the plaque removal process, a fluid aspiration structure is used to extract the plaque to increase the treatment effect. However, since the plaque is a near-solid substance, its fluidity remains poor even after it is removed. Therefore, extracting the plaque requires creating a large negative pressure in the blood vessel, which can easily cause stress on the blood vessel during the plaque aspiration process, increasing the surgical risk.

[0004] For example, invention publication number CN116549064A discloses a rotary cutting device and its usage method, including a body and a handle, a suction mechanism, and a rotary cutting mechanism mounted on the body. The rotary cutting mechanism has a drill bit and a rotary cutter with an adjustable cutting radius mounted at its distal end. The drill bit is mounted at the front end of the rotary cutter. The suction mechanism includes a suction tube with a suction port positioned near the rotary cutter. This invention, by adjusting the cutting angle and radius of the rotary cutter, can better cut plaques or thrombi, widening the intravascular channel. The small plaques or thrombi after rotary cutting can be quickly aspirated through the suction tube.

[0005] Taking the aforementioned rotary cutting device as an example, a suction structure is set behind the rotating cutter to extract the cut pieces, resulting in a large negative pressure near the suction piece location. Summary of the Invention

[0006] The purpose of this invention is to provide a coronary artery calcified plaque removal device that can actively rotate and simultaneously aspirate, so as to solve the problems mentioned in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a coronary artery calcified plaque removal device capable of active rotary cutting and synchronous aspiration, comprising a machine body shell, an elastic tube fixedly connected to one end of the outer side of the machine body shell, a drill bit fixedly connected to one end of the elastic tube, a transmission assembly and a cutting tool assembly disposed between the drill bit and the transmission tube, a plurality of drainage keyways disposed inside the cutting tool assembly, the drainage keyways being opened on the outer side of the transmission tube, liquid being output to multiple positions inside the cutting tool assembly through the plurality of drainage keyways, the rotation of the transmission tube causing the liquid to mix with the plaque cut and broken by the cutting tool assembly, a second water guide component connected to one end of the transmission tube disposed inside the machine body shell, the second water guide component being fixedly connected to a water inlet pipe, and a liquid aspiration assembly installed on the machine body shell.

[0008] Preferably, the tool assembly includes two mounting brackets, one of which is fixedly mounted on the outside of the transmission tube, and the other is fixedly mounted on the outside of the drill bit. Multiple rotary cutters are hinged between the two mounting brackets. The relative distance between the drill bit and the transmission tube is adjusted, the relative distance between the two mounting brackets is adjusted, and the rotary cutting angle and rotary cutting radius of the multiple rotary cutters are adjusted.

[0009] Preferably, the liquid extraction assembly includes a suction tube sleeved on the outside of the transmission pipe, an externally threaded pipe, and a water guide component. The water guide component is rotatably installed on the outside of the transmission pipe and fixedly connected to the inner wall of the machine body. Multiple water guide holes are provided on one side of the inside of the water guide component. The water guide holes are opened on the side wall of the machine body. The externally threaded pipe is fixedly installed on the outside of the machine body. The water guide holes connect the inside of the water guide component to the inside of the externally threaded pipe. The suction tube is threadedly installed on the outside of the externally threaded pipe. The suction tube can be disassembled. The water guide holes are connected to the inside of the externally threaded pipe. The sewage pump works by extracting the mixed liquid through the water guide component, the multiple water guide holes, and the suction tube.

[0010] Preferably, the outer casing of the machine body is equipped with a water storage tank and a sewage pump. The sewage pump is fixedly installed at the bottom of the inner cavity of the outer casing. The water inlet of the sewage pump is internally connected to a water guide. The water outlet of the sewage pump is fixedly connected to a drain bend. A connecting short pipe is fixedly installed on one side of the water storage tank. A rubber tube is fixedly installed inside the connecting short pipe. One end of the rubber tube has an arc-shaped groove. The rubber tube is sleeved on the outside of the drain bend. The arc-shaped groove at one end of the rubber tube facilitates the sleeve of the rubber tube on the outside of the drain bend. The water storage tank can be quickly installed and disassembled.

[0011] Preferably, a snap-fit ​​plate is fixedly connected to one end of the water storage tank near the sewage pump. Multiple plug-in plates are embedded on one side of the snap-fit ​​plate, supporting and limiting the snap-fit ​​plate and the water storage tank to prevent the water storage tank from shaking inside the machine casing. The plug-in plates are fixedly installed inside the machine casing. A square groove is formed on the outer side of the water storage tank, and a sliding limit frame is provided on one side of the square groove. The sliding limit frame is slidably installed on the machine casing and is fixedly connected to an operating plate. The operating plate operates the sliding limit frame to slide, causing one end of the sliding limit frame to enter or leave the square groove. The sliding limit frame and the machine casing are in an interference fit state, so the sliding limit frame can only move after being subjected to a certain force. The operating plate is located on the outer side of the machine casing.

[0012] Preferably, a flat needle roller bearing is fixedly connected between the second water guide component and the transmission pipe, the second water guide component is fixedly connected to a water inlet pipe, and a flow controller is fixedly connected to one end of the water inlet pipe. The flow controller controls the water pressure of the liquid flowing into the water inlet pipe to ensure the stability of the water pressure inside the water inlet pipe, the second water guide component, and the transmission pipe. The water inlet end of the flow controller extends to the outside of the outer casing of the machine body.

[0013] Preferably, the transmission assembly includes a first transmission shaft, a hexagonal column, a forward and reverse motor, and a clutch. One end of the first transmission shaft is rotatably connected to the hexagonal column, and one end of the hexagonal column is fixedly connected to the drill bit. An inner hexagonal sleeve is fitted on the outer side of the hexagonal column, and the inner hexagonal sleeve is fixedly installed inside the transmission tube. Under the action of the inner hexagonal sleeve, the hexagonal column and the drill bit rotate synchronously with the transmission tube. A fixing frame is fixedly connected between the forward and reverse motor and the clutch and the top of the inner cavity of the machine body. When the forward and reverse motor is working, the transmission tube rotates under the transmission of the second transmission shaft and the first gear. The transmission tube drives the hexagonal column and the drill bit to rotate through the inner hexagonal sleeve.

[0014] Preferably, the other end of the transmission shaft passes through the water guide and is rotatably connected to a brake. The brake is located inside the machine housing, and a guide frame passes through the brake. The guide frame is fixedly installed inside the machine housing, and the brake is fixedly positioned outside the guide frame, preventing it from moving. The brake is rotatably connected to the transmission shaft, and the hexagonal prism rotatably connected to the transmission shaft is fixedly connected to the drill bit. Therefore, the relative position between the drill bit and the transmission pipe remains unchanged. A rack is fixedly connected to one side of the brake, and a gear three is fixedly installed on the outside of the clutch output end, meshing with the rack.

[0015] Preferably, a second transmission shaft is fixedly connected between the output end of the forward and reverse motor and the input end of the clutch. A second gear is fixedly installed on the outside of the second transmission shaft. A first gear meshes with one side of the second gear. When the forward and reverse motor is working, the transmission tube rotates under the transmission of the second transmission shaft and the first gear. The transmission tube drives the hexagonal column and the drill bit to rotate through the internal hexagonal sleeve. The first gear is fixedly installed on the outside of the transmission tube.

[0016] Preferably, a knob and an operation button are fixedly installed on the outer side of the machine body shell.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. When this application is used, the flow controller controls the water pressure of the liquid flowing into the inlet pipe, ensuring the stability of the water pressure inside the inlet pipe, the second water guide component, and the transmission pipe. The liquid is output to the inside of the blade assembly through multiple drainage keyways. The rotation of the transmission pipe mixes the liquid with the plaque cut and broken by the blade assembly, making the plaque form a fluid mixture. The fluidity of the mixture is good. The sewage pump works to extract the mixture through the first water guide component, multiple water guide holes, and suction pipe. Because the mixture is fluid, the negative pressure required to extract the mixture is low. This ensures that the plaque cleaned by the blade assembly and drill bit is extracted without causing vascular deformation due to negative pressure, reducing the possibility of damage to the blood vessel by the blade assembly, reducing the possibility of harm to the patient during the use of the plaque removal device, and reducing the stress on the blood vessel where the plaque is located during treatment, thus reducing the possibility of rupture of the diseased blood vessel.

[0018] 2. When this application is used, the brake drives the transmission shaft to move, and the drill bit moves. By controlling the forward or reverse rotation of the forward and reverse motors, the direction of the brake movement is controlled, the direction of the drill bit movement is controlled, the relative distance between the drill bit and the transmission tube is adjusted, the relative distance between the two mounting brackets is adjusted, and the swirl angle and swirl radius of multiple rotary cutters are adjusted. Through the cooperation of the clutch, gear three and rack, the position of the drill bit is directly controlled to adjust the state of the tool assembly, improve the controllability of the tool assembly adjustment, reduce the force on the transmission tube, and ensure the stability of the transmission tube operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the rotating cutter of the present invention; Figure 3 This is a partial sectional view of the transmission tube of the present invention; Figure 4 for Figure 3 Enlarged view of the structure at point A; Figure 5 This is a schematic diagram of the hexagonal prism structure of the present invention; Figure 6This is a cross-sectional view of the outer casing of the present invention; Figure 7 This is a cross-sectional view of the water guide component of the present invention; Figure 8 This is a partial cross-sectional view of the outer casing of the present invention; Figure 9 This is a schematic diagram of the structure of the transmission shaft component two of the present invention; Figure 10 This is a schematic diagram of the connecting short tube structure of the present invention; Figure 11 This is a schematic diagram of the brake of the present invention; Figure 12 This is a schematic diagram of the structure of the second water guide component of the present invention; Figure 13 This is a schematic diagram of the rack structure of the present invention.

[0020] Numbered components in the diagram: 1. Machine casing; 2. Suction pipe; 3. External threaded pipe; 4. Transmission fittings; 5. Transmission shaft component one; 6. Hexagonal prism; 7. Drill bit; 8. Internal hexagonal sleeve; 10. Mounting bracket one; 11. Rotary cutter; 12. Drainage keyway; 13. Water guide component one; 14. Water guide hole; 15. Flat needle roller bearing; 16. Water guide component two; 17. Gear one; 18. Forward and reverse motor; 19. Transmission shaft component two; 20. Gear two; 21. Clutch 22. Gear 3; 23. Rack; 24. Brake; 25. Guide frame; 26. Inlet pipe; 27. Flow controller; 28. Sewage pump; 29. ​​Drainage bend; 30. Connecting short pipe; 31. Rubber hose; 32. Arc groove; 33. Water storage tank; 34. Snap-fit ​​plate; 35. Plug-in plate; 36. Square groove; 37. Sliding limit frame; 38. Control panel; 39. Elastic tube; 40. Operation button; 41. Knob; 42. Fixing frame. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Figures 1-13As shown, this invention provides a coronary artery calcified plaque removal device capable of active rotary cutting and synchronous aspiration. An elastic tube 39 is fixedly connected to one end of the outer shell 1, and a drill bit 7 is fixedly connected to the other end of the elastic tube 39. A transmission assembly and a cutting tool assembly are arranged between the drill bit 7 and the transmission tube 4. The transmission assembly includes a transmission shaft 5, a hexagonal column 6, a forward / reverse motor 18, and a clutch 21. One end of the transmission shaft 5 is rotatably connected to the hexagonal column 6, and one end of the hexagonal column 6 is fixedly connected to the drill bit 7. The outer side of the hexagonal column 6 is fitted with... The system includes an internal hexagonal sleeve 8, which is fixedly installed inside the transmission pipe 4. A mounting bracket 42 is fixedly connected between the forward / reverse motor 18 and the clutch 21 and the top of the inner cavity of the machine body 1. The tool assembly includes two mounting brackets 10, one of which is fixedly installed on the outside of the transmission pipe 4, and the other is fixedly installed on the outside of the drill bit 7. Multiple rotating cutters 11 are hinged between the two mounting brackets 10. Multiple drainage keyways are provided inside the tool assembly. 12. A drain keyway 12 is located on the outside of the transmission pipe 4. One end of the transmission pipe 4, located inside the outer casing 1, is connected to a second water guide 16. A flat needle roller bearing 15 is fixedly connected between the second water guide 16 and the transmission pipe 4. A water inlet pipe 26 is fixedly connected to the second water guide 16. A flow controller 27 is fixedly connected to one end of the water inlet pipe 26. The water inlet end of the flow controller 27 extends to the outside of the outer casing 1. A liquid pumping assembly is installed on the outer casing 1. The liquid extraction assembly includes a suction tube 2, an externally threaded tube 3, and a water guide component 13 sleeved on the outside of the transmission tube 4. The water guide component 13 is rotatably installed on the outside of the transmission tube 4 and fixedly connected to the inner wall of the outer casing 1. Multiple water guide holes 14 are provided on one side of the inside of the water guide component 13. The water guide holes 14 are opened on the side wall of the outer casing 1. The externally threaded tube 3 is fixedly installed on the outside of the outer casing 1. The water guide holes 14 communicate with the inside of the externally threaded tube 3. The suction tube 2 is threadedly installed on the outside of the externally threaded tube 3.

[0023] Specifically, such as Figure 1 and Figure 2 In the tool assembly, one of the two mounting brackets 10 is fixedly mounted on the outside of the transmission tube 4, and the other mounting bracket 10 is fixedly mounted on the outside of the drill bit 7. Multiple rotary cutters 11 are hinged between the two mounting brackets 10. The multiple rotary cutters 11 rotate synchronously with the transmission tube 4. In this application, the rotary cutter 11 is a V-shaped flexible blade that can be bent outward in the middle. At least one side of the V-shaped flexible blade is provided with a cutting edge.

[0024] Specifically, such as Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9and Figure 10 In the liquid extraction assembly, the suction tube 2, the external threaded tube 3, and the water guide component 13 are all located in the transmission tube 4. The water guide component 13 is located inside the outer shell 1 of the machine body. The water guide component 13 is rotatably installed on the outside of the transmission tube 4 and fixedly connected to the inner wall of the outer shell 1 of the machine body. The water guide component 13 does not affect the rotation of the transmission tube 4. Multiple water guide holes 14 are provided on one side of the inside of the water guide component 13 and are opened on the side wall of the outer shell 1 of the machine body. The external threaded tube 3 is fixedly installed on the outside of the outer shell 1 of the machine body. The water guide holes 14 connect the inside of the water guide component 13 with the inside of the external threaded tube 3. The suction tube 2 is threadedly installed on the outside of the external threaded tube 3. The suction tube 2 can be disassembled.

[0025] The outer casing 1 contains a water storage tank 33 and a sewage pump 28. The sewage pump 28 is fixedly installed at the bottom of the inner cavity of the outer casing 1 and cannot move. The water inlet of the sewage pump 28 is connected to the inside of the water guide 13, and the sewage pump 28 can draw water from inside the water guide 13. The water outlet of the sewage pump 28 is fixedly connected to a drain bend 29. A rubber tube 31 is fixedly installed inside a connecting short pipe 30 fixedly installed on one side of the water storage tank 33. An arc groove 32 is opened at one end of the rubber tube 31 to facilitate the rubber tube 31 to be sleeved on the outside of the drain bend 29. The water storage tank 33 can be quickly installed and disassembled.

[0026] A snap-fit ​​plate 34 is fixedly connected to one end of the water storage tank 33 near the sewage pump 28. Multiple plug-in plates 35 embedded on one side of the snap-fit ​​plate 34 are fixedly installed inside the outer casing 1 of the machine body. The plug-in plates 35 support and limit the snap-fit ​​plate 34 and the water storage tank 33 to prevent the water storage tank 33 from shaking inside the outer casing 1 of the machine body.

[0027] A sliding limit frame 37 is provided on one side of the square groove 36 opened on the outside of the water storage tank 33. The sliding limit frame 37 is slidably installed on the outer shell 1 of the machine body. The operating plate 38 fixedly connected to the sliding limit frame 37 is located on the outside of the outer shell 1 of the machine body. The sliding limit frame 37 is operated by the operating plate 38 to slide, so that one end of the sliding limit frame 37 enters or leaves the inside of the square groove 36. The sliding limit frame 37 and the outer shell 1 of the machine body are in an interference fit state, so the sliding limit frame 37 can only move after being subjected to a certain force.

[0028] Specifically, such as Figure 6 and Figure 7 A flat needle roller bearing 15 is fixedly connected between the water guide component 2 16 and the transmission pipe 4. The water guide component 2 16 does not affect the rotation of the transmission pipe 4. One end of the water inlet pipe 26 fixedly connected to the water guide component 2 16 is fixedly connected to a flow controller 27. The flow controller 27 is fixedly installed inside the outer shell 1 of the machine body. The water inlet end of the flow controller 27 extends to the outside of the outer shell 1 of the machine body and is connected to the water supply equipment (the water supply equipment and the flow controller 27 are connected by a hose, which will not affect the normal movement of the outer shell 1 of the machine body). Water can be supplied to the inside of the transmission pipe 4 through the water guide component 2 16.

[0029] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 11 , Figure 12 and Figure 13 The transmission assembly consists of a transmission shaft 5, a hexagonal column 6, a forward and reverse motor 18, a clutch 21, and other structures. One end of the transmission shaft 5 is rotatably connected to the hexagonal column 6, and the other end of the hexagonal column 6 is fixedly connected to the drill bit 7. The transmission shaft 5, the hexagonal column 6, and the drill bit 7 move synchronously left and right. The inner hexagonal sleeve 8, which is fitted on the outside of the hexagonal column 6, is fixedly installed inside the transmission tube 4. Under the action of the inner hexagonal sleeve 8, the hexagonal column 6 and the drill bit 7 rotate synchronously with the transmission tube 4. The forward and reverse motor 18 and the clutch 21 are fixedly connected to the top of the inner cavity of the machine body shell 1 by a fixing bracket 42, so that the forward and reverse motor 18 and the clutch 21 cannot move.

[0030] The other end of the drive shaft 5 passes through the water guide 16 and is rotatably connected to the brake 24. The brake 24 is located inside the outer shell 1 of the machine body. The guide frame 25 passing through the brake 24 is fixedly installed inside the outer shell 1 of the machine body. The movement of the brake 24 is guided. A rack 23 is fixedly connected to one side of the brake 24. The gear 22 fixedly installed on the outer side of the output end of the clutch 21 meshes with the rack 23.

[0031] A transmission shaft 19 is fixedly connected between the output end of the forward and reverse motor 18 and the input end of the clutch 21. A gear 17 is meshed on one side of a gear 20 fixedly installed on the outside of the transmission shaft 19. The gear 17 is fixedly installed on the outside of the transmission tube 4 and controls the operation of the forward and reverse motor 18. Under the transmission of the transmission shaft 19 and the gear 17, the transmission tube 4 rotates. The transmission tube 4 drives the hexagonal column 6 and the drill bit 7 to rotate through the internal hexagonal sleeve 8.

[0032] In summary, the plaque removal device consists of the outer casing 1, transmission pipe 4, elastic tube 39, drill bit 7, transmission assembly, cutting tool assembly, multiple drainage keyways 12, water guide component 16, liquid extraction assembly, and water inlet pipe 26. The working principle of the plaque removal device is as follows: The knob 41, fixedly mounted on the outer side of the operating body 1, rotates clockwise or counterclockwise to control the forward and reverse motors 18 to operate in the corresponding speeds. Driven by the transmission shaft 19, gear 20, and gear 17, the transmission tube 4 rotates. The transmission tube 4, through the hexagonal sleeve 8 and hexagonal column 6, drives the drill bit 7 to rotate. The rotating drill bit 7 first breaks up plaques or thrombi. At this time, the drill bit 7 and the transmission tube 4 rotate synchronously. The tool assembly, fixedly mounted between the drill bit 7 and the transmission tube 4, rotates, and multiple rotating cutters 11 within the tool assembly... Rotation occurs because the brake 24 is fixed to the outside of the guide frame 25 at this time, so the brake 24 cannot move. The brake 24 is rotatably connected to the transmission shaft 5. The hexagonal column 6 rotatably connected to the transmission shaft 5 is fixedly connected to the drill bit 7. Therefore, the relative position between the drill bit 7 and the transmission tube 4 remains unchanged, the state of the rotating cutter 11 remains unchanged, and the maximum diameter of the ring cutter composed of multiple rotating cutters 11 remains unchanged, so that the cutter assembly can further cut off the plaque or thrombus. The elastic tube 39 fixedly installed between the transmission tube 4 and the drill bit 7 plays a sealing role.

[0033] Simultaneously, the water supply equipment is controlled to deliver liquid (which can be a liquid that does not cause harm to the human body, such as saline) into the flow controller 27. The flow controller 27 controls the water pressure of the liquid flowing into the inlet pipe 26 to ensure the stability of the water pressure inside the inlet pipe 26, the water guide component 16, and the transmission pipe 4. The liquid is output to multiple positions inside the cutter assembly through multiple drainage keyways 12. The rotation of the transmission pipe 4 causes the liquid to mix with the patches cut and broken by the cutter assembly, so that the patches form a fluid mixture with good fluidity.

[0034] Simultaneously, the operation of the sewage pump 28 creates a negative pressure inside the water guide 13, the external threaded pipe 3, and the suction pipe 2. The open end of the suction pipe 2 is located on one side of the blade assembly. Therefore, the sewage pump 28 extracts the mixed liquid through the water guide 13, multiple water guide holes 14, and the suction pipe 2. Because the mixed liquid has good fluidity, the negative pressure required to extract the mixed liquid is low. This ensures that the plaque removed by the blade assembly and the drill bit 7 is extracted without causing vascular deformation due to negative pressure. This reduces the possibility of damage to the blood vessels caused by the blade assembly, lowers the possibility of harm to the patient during the use of the plaque removal device, and reduces the stress on the blood vessels where the plaque is located during the treatment process, thus reducing the possibility of rupture of the diseased blood vessels.

[0035] After reducing the speed of the forward and reverse motors 18 by turning knob 41, press and hold operation button 40. At this time, clutch 21 engages, brake 24 stops and can move along guide frame 25. The forward and reverse motors 18 drive rack 23 through transmission shaft 19, clutch 21 and gear 22. Rack 23 drives brake 24, brake 24 drives transmission shaft 5, and drill bit 7. By controlling the forward or reverse rotation of the forward and reverse motors 18, the direction of brake 24 is controlled, the direction of drill bit 7 is controlled, the relative distance between drill bit 7 and transmission tube 4 is adjusted, the relative distance between the two mounting brackets 10 is adjusted, and the cutting angle and cutting radius of multiple rotating cutters 11 are adjusted. Through the cooperation of clutch 21, gear 22 and rack 23, the position of drill bit 7 is directly controlled to adjust the state of the tool assembly, improve the controllability of tool assembly adjustment, reduce the force on transmission tube 4, and ensure the stability of transmission tube 4.

[0036] Alternatively, a microcontroller can be installed inside the outer casing 1 to work with the knob 41 and operation button 40 to control the forward and reverse motor 18, clutch 21 and brake 24. This is an existing technology application and will not be described in detail here.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An active rotational atherectomy and simultaneous aspiration device for removing coronary calcified plaque, comprising a body shell (1), characterized in that: The machine body shell (1) outside one end is fixedly connected with the elastic pipe (39), one end of the elastic pipe (39) is fixedly connected with the drill bit (7), the drill bit (7) and the transmission pipe (4) are provided with transmission assembly and cutter assembly, the cutter assembly is provided with a plurality of drainage key grooves (12) inside, the drainage key grooves (12) are opened on the outside of the transmission pipe (4), one end of the transmission pipe (4) is communicated with the water guide (16) in the machine body shell (1), the water guide (16) is fixedly connected with the water inlet pipe (26), the machine body shell (1) is provided with the liquid pumping assembly.

2. The device of claim 1, wherein the device is capable of active rotational atherectomy and simultaneous aspiration. The cutter assembly includes two mounting frames (10), one of the mounting frames (10) is fixedly installed on the outside of the transmission pipe (4), the other mounting frame (10) is fixedly installed on the outside of the drill bit (7), and a plurality of rotary cutters (11) are hinged between the two mounting frames (10).

3. The device of claim 1, wherein the device is capable of active rotational atherectomy and simultaneous aspiration. The liquid pumping assembly includes a suction pipe (2), an external thread pipe (3) and a water guide (13) sleeved on the outside of the transmission pipe (4), the water guide (13) is rotatably installed on the outside of the transmission pipe (4) and fixedly connected with the inner wall of the machine body shell (1), a plurality of water guide holes (14) are formed in the inner side of the water guide (13), the water guide holes (14) are formed on the side wall of the machine body shell (1), the external thread pipe (3) is fixedly installed on the outside of the machine body shell (1), the water guide holes (14) are communicated with the inside of the external thread pipe (3), and the suction pipe (2) is screwed on the outside of the external thread pipe (3).

4. The device of claim 3, wherein the device is capable of active rotational atherectomy and simultaneous aspiration. The machine body shell (1) is provided with a water storage tank (33) and a sewage pump (28), the sewage pump (28) is fixedly installed on the bottom of the inner cavity of the machine body shell (1), the water inlet end of the sewage pump (28) is communicated with the inside of the water guide (13), the water outlet end of the sewage pump (28) is fixedly connected with the drain elbow (29), one side of the water storage tank (33) is fixedly installed with a connecting short pipe (30), the inside of the connecting short pipe (30) is fixedly installed with a rubber pipe (31), one end of the rubber pipe (31) is formed with an arc-shaped groove (32), and the rubber pipe (31) is sleeved on the outside of the drain elbow (29).

5. The device of claim 4, wherein the device is capable of active rotational atherectomy and simultaneous aspiration of the calcified plaque. One end of the water storage tank (33) close to the sewage pump (28) is fixedly connected with a clamping plate (34), a plurality of plug-in plates (35) are embedded on one side of the clamping plate (34), the plug-in plates (35) are fixedly installed in the machine body shell (1), a square groove (36) is formed on the outside of the water storage tank (33), a sliding limiting frame (37) is arranged on one side of the square groove (36), the sliding limiting frame (37) is slidingly installed on the machine body shell (1), the sliding limiting frame (37) is fixedly connected with an operating plate (38), and the operating plate (38) is arranged on the outside of the machine body shell (1).

6. The device of claim 1, wherein the device is capable of active rotational atherectomy and simultaneous aspiration. The water guide two (16) and the transmission pipe (4) are fixedly connected with a plane needle bearing (15), the water guide two (16) is fixedly connected with a water inlet pipe (26), one end of the water inlet pipe (26) is fixedly connected with a flow controller (27), and the water inlet end of the flow controller (27) extends to the outside of the machine body shell (1).

7. The device of claim 1, wherein the device is capable of active rotational atherectomy and simultaneous aspiration. The transmission assembly includes a transmission shaft (5), a hexagonal column (6), a forward and reverse motor (18) and a clutch (21), one end of the transmission shaft (5) is rotatably connected with the hexagonal column (6), one end of the hexagonal column (6) is fixedly connected with the drill bit (7), the outer side of the hexagonal column (6) is sleeved with an inner hexagonal sleeve (8), the inner hexagonal sleeve (8) is fixedly installed in the transmission pipe (4), and the forward and reverse motor (18) and the clutch (21) are fixedly connected with the fixed frame (42) between the top of the inner cavity of the machine body shell (1).

8. The device of claim 7, wherein the device is capable of active rotational atherectomy and simultaneous aspiration. The other end of the transmission shaft (5) is rotatably connected with a brake (24) penetrating through the water guide two (16), the brake (24) is arranged in the machine body shell (1), a guide frame (25) is arranged on the brake (24), the guide frame (25) is fixedly installed in the machine body shell (1), a rack (23) is fixedly connected to one side of the brake (24), a gear three (22) is fixedly installed on the outer side of the output end of the clutch (21), and the gear three (22) is engaged with the rack (23).

9. The device of claim 7, wherein the device is capable of active rotational atherectomy and simultaneous aspiration. The output end of the forward and reverse motor (18) is fixedly connected with the transmission shaft two (19), the transmission shaft two (19) is fixedly installed with a gear two (20) on the outer side, one side of the gear two (20) is engaged with a gear one (17), and the gear one (17) is fixedly installed on the outer side of the transmission pipe (4).

10. The device of claim 1, wherein the device is capable of active rotational atherectomy and simultaneous aspiration. The machine body shell (1) is fixedly installed with a rotary knob (41) and an operation button (40) on the outer side.

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