Coronary papillary balloon dilatation catheter

Abstract

The application belongs to the technical field of medical instruments, and particularly relates to a coronary artery papillary balloon dilatation catheter, which comprises a dilatation catheter body, a fixed ring fixedly connected to the dilatation catheter body, a balloon body connected to the fixed ring, a hole provided on the dilatation catheter body, a flow channel provided on the inner wall of the dilatation catheter body, a silica gel head fixedly connected to the other end of the dilatation catheter body, a stop block fixedly arranged in the silica gel head, a piston block movably arranged in the silica gel head, a connecting rod, a ring-shaped block fixedly connected to one end of the connecting rod, and an impact head fixedly connected to the side surface of the ring-shaped block. The coronary artery papillary balloon dilatation catheter is convenient for removing thrombus through the impact head, avoids the influence of thrombus on the dilatation effect of the blood vessel, makes gas flow into the silica gel head, drives the piston block to move, drives the ring-shaped block and the impact head to move through the connecting rod, and removes the thrombus after the impact head moves out of the silica gel head and contacts the thrombus, so that the dilatation treatment of the coronary artery of a patient is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically a coronary papillary balloon dilation catheter. Background Technology

[0002] The term "papillary artery" generally refers to the anatomical structures within the coronary artery system, particularly the papillary projections or anatomical features located within the coronary artery lumen. These areas can, in certain situations, form the anatomical basis for lesions, affecting blood flow. The coronary papillary balloon dilation catheter is used in coronary interventional procedures to mechanically dilate local blood vessels to improve blood flow and alleviate blood flow restriction caused by stenosis, plaque, or anatomical abnormalities (such as papillary-related lesions). An inflatable balloon is attached to the catheter tip; inflation of the balloon compresses the plaque and dilates the vessel lumen, thereby improving local perfusion. It is primarily used when anatomical or lesion-related narrowing of the papillary region necessitates local dilation to restore blood flow.

[0003] A Chinese patent with publication number CN113262381A discloses a balloon dilation catheter, including an air delivery tube. An inflation head is connected to the surface of the air delivery tube, and a valve is connected to the surface of the inflation head. A drug delivery tube is disposed inside the air delivery tube, with a drug delivery head connected to one end of the drug delivery tube. A drug outlet is provided at one end of the drug delivery tube. The surface of the air delivery tube is coated with a hydrophobic layer made of fluorinated polyethylene hydrophobic coating. This invention achieves hydrophobicity of the catheter by avoiding the application of a hydrophobic layer to the air delivery tube, preventing blood from adhering to the catheter surface, preventing contamination of the instrument or the ground, and reducing workload. Furthermore, by designing the dilation balloon as hollow and supporting it with a supporting balloon, this invention enables prolonged use, increases treatment time, ensures treatment quality, and reduces patient suffering.

[0004] Existing coronary papillary balloon dilation catheters have limited ability to remove thrombi attached to the vessel wall during the dilation process. If the thrombus density on the vessel wall is high or the adhesion is strong, it may reduce the effect of balloon dilation on changing the lumen diameter, increasing the risk of complications such as uneven local perfusion, reperfusion injury, and embolism.

[0005] Therefore, the present invention provides a coronary papillary balloon dilation catheter. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the problem of difficulty in removing thrombi adhering to the inner wall of blood vessels, this invention proposes a coronary papillary balloon dilation catheter.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a coronary papillary balloon dilation catheter, comprising a dilation catheter body, a fixing ring fixedly connected to the dilation catheter body, a balloon body connected to the fixing ring, a hole provided on the dilation catheter body and the hole located on one side of the balloon body, a connecting mechanism provided at one end of the dilation catheter body, a flow channel provided on the inner wall of the dilation catheter body, a silicone head fixedly connected to the other end of the dilation catheter body, a stop block fixedly provided inside the silicone head, a piston block movably provided inside the silicone head and the piston block located on one side of the stop block, a connecting rod fixedly provided at the center of the piston block, a reset mechanism for resetting the piston block provided inside the silicone head, an annular block fixedly connected to one end of the connecting rod, an impact head fixedly connected to the side of the annular block, a pipe connected to one end of the silicone head and the other end of the pipe communicating with the flow channel, and a scraping mechanism provided on the annular block.

[0008] By employing the above-mentioned procedure, preoperative preparations are made. Under sterile conditions, the dilator catheter is inserted into the vascular system through channels such as the femoral artery and radial artery. Image guidance is used to guide the catheter to the target coronary artery segment, ensuring the balloon is aligned with the lesion area. Inflation of the balloon compresses the plaque and dilates the vessel lumen until it reaches the target diameter, maintaining this expansion for a certain period to achieve the desired effect. Real-time angiography or blood flow monitoring is used to assess post-dilation blood flow and lumen changes, thereby achieving dilation of stenotic or anatomically restricted areas within the patient's coronary arteries. After treatment, the balloon is repositioned, and the dilator catheter is withdrawn from the body. Postoperative management is then performed. This procedure achieves the goal of dilating the patient's coronary arteries. During the movement of the dilator catheter within the patient's blood vessels, thrombi at the dilation site may be stubborn and require further investigation. During dilation, the device connects to an external gas supply system via a connecting mechanism. Gas flow, through channels and pipes, allows compressed air to enter the silicone head, pushing a piston block to move. This piston block movement, via a connecting rod, moves an annular block and an impact head. Once the impact head exits the silicone head, it contacts the thrombus, allowing for its removal and facilitating coronary artery dilation. If further thrombus removal is needed, increased atmospheric pressure pushes the piston block further, causing it to move the annular block out of the silicone head. This movement activates a scraping mechanism, which contacts thrombi on the side. Controlling the movement of the dilation catheter body, the scraping mechanism further removes thrombi adhering to the blood vessels, achieving the goal of coronary artery dilation and improving treatment efficacy.

[0009] Preferably, the reset mechanism includes a support block, a guide cylinder, and a first spring. The support block is fixedly disposed inside the silicone head, the guide cylinder is fixedly disposed inside the support block, and the connecting rod passes through the guide cylinder. The first spring is arranged around the connecting rod, and one end of the first spring is fixedly connected to the piston block, and the other end of the first spring is fixedly connected to the support block.

[0010] By adopting the above scheme, a sealing ring is arranged around the inside of the guide cylinder. The sealing ring is used to seal the gap between the guide cylinder and the connecting rod, which further improves the sealing effect. After the air pressure entering the silicone head flows back, it no longer puts pressure on the piston block. The first spring resets, which pushes the piston block to reset. The piston block reset will drive the annular block to reset through the connecting rod.

[0011] Preferably, the connecting mechanism includes a connecting pipe, a first connector, a gas supply pipe, and a second connector. The connecting pipe is connected to one end of the expansion conduit body, the first connector is connected to one end of the connecting pipe, the gas supply pipe is installed on the side of the connecting pipe, the second connector is connected to the gas supply pipe, the gas supply pipe is connected to the flow channel, and an opening and closing mechanism is rotatably provided inside the connecting pipe.

[0012] By adopting the above scheme, connector No. 1 is used to connect with the pressure pump. After the pressure pump delivers air pressure into the connecting tube, it will flow into the body of the expansion tube, and then the gas will flow into the body of the balloon. This allows the balloon to expand or shrink. The opening and closing mechanism can close or open the connecting tube, allowing the balloon to maintain its volume. Connector No. 2 is connected to the external gas delivery equipment. The air pressure, through the gas delivery pipe and flow channel, will cause the gas to flow into the silicone head.

[0013] Preferably, the opening and closing mechanism includes a ball valve and a knob. The ball valve is rotatably disposed inside the connecting pipe, and the knob is disposed on the connecting pipe. The center of the knob is fixedly connected to the top of the ball valve via a shaft.

[0014] By adopting the above scheme, turning the knob will drive the ball valve to rotate, and the rotation of the ball valve can close or open the space inside the connecting pipe.

[0015] Preferably, the first connector is connected to a pressure pump, and the pressure pump is equipped with a pressure gauge.

[0016] By adopting the above scheme, the pressure pump operates by connecting the No. 1 connector, which allows gas to flow into the connecting pipe, and the gas pressure can be detected by a pressure gauge.

[0017] Preferably, the scraping mechanism includes a storage tube, a scraping head, and a driving assembly. The storage tube array is embedded inside the annular block, the scraping head passes through the storage tube, and the driving assembly for driving the scraping head to move is disposed inside the storage tube.

[0018] By adopting the above scheme, when the annular block moves out of the silicone head, the drive component moves, which pushes the scraping head to move. One end of the scraping head extends into a storage tube, and the scraping head can contact the thrombus on the inner wall of the blood vessel, thereby controlling the movement of the dilation catheter body and scraping away the thrombus.

[0019] Preferably, the top of the scraping head is spherical.

[0020] By adopting the above method, damage to blood vessels can be effectively avoided when scraping the thrombus with the scraping head.

[0021] Preferably, the driving assembly includes a driving spring, a sliding rod, and a plate. The sliding rod is disposed inside the storage cylinder, and one end of the sliding rod is fixedly connected to the scraping head. The driving spring is arranged around the sliding rod, and the plate is fixedly disposed on the sliding rod, with one end of the driving spring fixedly connected to the plate.

[0022] By adopting the above solution, after the scraping head moves out of the storage tube, the drive spring will push the plate to move the sliding rod, which in turn will move the scraping head.

[0023] Preferably, a guide block is fixedly installed inside the storage tube, and one end of the sliding rod passes through the inside of the guide block, while the other end of the drive spring is fixedly connected to the top of the guide block.

[0024] By adopting the above solution, the sliding rod moves smoothly. When the annular block resets and enters the silicone head, it applies pressure to the top of the scraping head, which is then compressed and enters the storage tube.

[0025] Preferably, a circular block is fixedly installed inside the storage tube, and the sliding rod passes through the circular block.

[0026] By adopting the above scheme, the circular block facilitates the guidance of the sliding rod, allowing it to move smoothly.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. The coronary papillary balloon dilation catheter of this invention, with its specially designed impact head, facilitates the removal of thrombi, preventing thrombi from affecting the vasodilation effect. The second connector connects to an external gas delivery device; gas pressure, through the gas delivery tube and flow channel, causes gas to flow into the silicone head, which in turn pushes the piston block to move. The piston block's movement, via the connecting rod, drives the annular block and the impact head to move. After the impact head moves out of the silicone head, it comes into contact with the thrombus, thus removing it and facilitating the dilation of the patient's coronary arteries, ensuring the vasodilation effect of the coronary papillary balloon dilation catheter.

[0029] 2. The coronary papillary balloon dilation catheter of this invention, with its scraping head and receiving tube, facilitates further treatment of thrombi and dilation of blood vessels. During thrombus removal, increasing atmospheric pressure pushes a piston block, which in turn moves an annular block out of the silicone head. Once the scraping head is out of the receiving tube, a driving spring activates a plate that moves a sliding rod, which in turn moves the scraping head. The scraping head can then contact the thrombus on the inner wall of the blood vessel, controlling the movement of the dilation catheter body to scrape away the thrombus and further remove thrombi adhering to the blood vessel. This achieves the goal of dilating the patient's coronary arteries, improving treatment efficacy.

[0030] 3. The coronary papillary balloon dilation catheter of the present invention uses a ball valve to facilitate the maintenance of stable pressure inside the balloon body, preventing gas flow that could affect the balloon's dilation effect. After the balloon body is dilated, rotating the knob will drive the ball valve to rotate. The rotation of the ball valve can close or open the space inside the connecting tube. When the ball valve closes the space inside the connecting tube, it can prevent gas flow inside the balloon body from affecting the balloon's expansion effect, thus achieving the purpose of maintaining the balloon body's expansion effect and ensuring the coronary papillary balloon dilation catheter's vascular dilation effect. Attached Figure Description

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 This is a three-dimensional view of the coronary papillary balloon dilation catheter of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the balloon body in this invention;

[0034] Figure 3 This is a schematic diagram of the flow channel structure in this invention;

[0035] Figure 4 This is a schematic diagram of the connecting pipe in this invention;

[0036] Figure 5 This is a schematic diagram of the silicone head structure in this invention;

[0037] Figure 6 This is a schematic diagram of the structure of the balloon body in this invention;

[0038] Figure 7 This is a schematic diagram of the ring block structure in this invention;

[0039] Figure 8 This is a schematic diagram of the structure of the storage tube in this invention.

[0040] In the diagram: 1. Dilation catheter body; 2. Fixing ring; 3. Balloon body; 4. Hole; 5. Connecting tube; 6. Connector No. 1; 7. Pressure pump; 8. Pressure gauge; 9. Gas delivery tube; 10. Connector No. 2; 11. Ball valve; 12. Knob; 13. Flow channel; 14. Silicone head; 15. Pipe; 16. Stop block; 17. Piston block; 18. Support block; 19. Guide tube; 20. Spring No. 1; 21. Connecting rod; 22. Annular block; 23. Impact head; 24. Storage tube; 25. Circular block; 26. Scraping head; 27. Sliding rod; 28. Drive spring; 29. ​​Guide block; 30. Plate. Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0042] like Figures 1 to 8 As shown in the embodiment of the present invention, a coronary papillary balloon dilation catheter includes a dilation catheter body 1, a fixing ring 2 fixedly connected to the dilation catheter body 1, a balloon body 3 connected to the fixing ring 2, a hole 4 provided on the dilation catheter body 1, and the hole 4 located on one side of the balloon body 3, a connecting mechanism provided at one end of the dilation catheter body 1, a flow channel 13 provided on the inner wall of the dilation catheter body 1, a silicone head 14 fixedly connected to the other end of the dilation catheter body 1, a stop block 16 fixedly provided inside the silicone head 14, a piston block 17 movably provided inside the silicone head 14, and the piston block 17 located on one side of the stop block 16, a connecting rod 21 fixedly provided at the center of the piston block 17, a reset mechanism for resetting the piston block 17 provided inside the silicone head 14, an annular block 22 fixedly connected to one end of the connecting rod 21, an impact head 23 fixedly connected to the side of the annular block 22, a pipe 15 connected to one end of the silicone head 14, and the other end of the pipe 15 communicating with the flow channel 13, and a scraping mechanism provided on the annular block 22;

[0043] The coronary papillary balloon dilation catheter is used to dilate narrowed or anatomically restricted areas within the patient's coronary arteries through the balloon body 3, improving local blood perfusion. Coronary angiography is performed to clarify the location, extent, and anatomical features of the lesion. Preoperative preparations are then made. Under sterile conditions, the dilation catheter body 1 is inserted into the vascular system through channels such as the femoral or radial artery. Image guidance is used to advance the dilation catheter body 1 to the target coronary segment, ensuring that the balloon body 3 is aligned with the lesion area. Inflation of the balloon body 3 causes the balloon body 3 to expand, thereby compressing the plaque and dilating the vessel lumen. The balloon body 3 is inflated to the target diameter and maintained for a certain period to achieve the dilation effect. Real-time angiography or blood flow monitoring is performed to assess the blood flow and lumen changes after dilation, thereby achieving the goal of dilating narrowed or anatomically restricted areas within the patient's coronary arteries. After treatment, the balloon body 3 is repositioned, and the dilation catheter body 1 is withdrawn from the body. Postoperative management is then performed, achieving the goal of dilating the patient's coronary arteries.

[0044] When the dilator catheter body 1 moves through the patient's blood vessel, if the thrombus at the dilation site is particularly stubborn and cannot be dilated, it connects to an external gas delivery device via a connecting mechanism. Gas flows through the flow channel 13 and pipe 15, causing compressed air to enter the silicone head 14, which in turn pushes the piston block 17 to move. The movement of the piston block 17, via the connecting rod 21, drives the annular block 22 and the impact head 23 to move. After the impact head 23 moves out of the silicone head 14, it comes into contact with the thrombus, thereby clearing the thrombus and facilitating the dilation of the patient's coronary artery. When it is necessary to continue clearing the thrombus, the atmospheric pressure is increased, which will push the piston block 17 to continue moving. The movement of the piston block 17 will push the annular block 22 to move out of the silicone head 14, which will cause the scraping mechanism to move and come into contact with the thrombus on the side. In turn, when the dilation catheter body 1 moves, the thrombus adsorbed on the blood vessel can be further cleared by the movement of the scraping mechanism, thereby achieving the purpose of dilating the patient's coronary artery and improving the treatment effect. A sealing ring is provided around the piston block 17 to prevent air pressure from penetrating to the other side of the piston block 17.

[0045] Furthermore, the reset mechanism includes a support block 18, a guide cylinder 19, and a first spring 20. The support block 18 is fixedly disposed inside the silicone head 14, the guide cylinder 19 is fixedly disposed inside the support block 18, and the connecting rod 21 passes through the guide cylinder 19. The first spring 20 is arranged around the connecting rod 21, and one end of the first spring 20 is fixedly connected to the piston block 17, and the other end of the first spring 20 is fixedly connected to the support block 18.

[0046] A sealing ring is arranged around the inside of the guide cylinder 19. The sealing ring is used to seal the gap between the guide cylinder 19 and the connecting rod 21, which further improves the sealing effect. After the air pressure entering the silicone head 14 flows back, it no longer puts pressure on the piston block 17. The first spring 20 resets, which pushes the piston block 17 to reset. The reset of the piston block 17 will drive the annular block 22 to reset through the connecting rod 21.

[0047] Furthermore, the connecting mechanism includes a connecting pipe 5, a first connector 6, a gas supply pipe 9, and a second connector 10. The connecting pipe 5 is connected to one end of the expansion conduit body 1, the first connector 6 is connected to one end of the connecting pipe 5, the gas supply pipe 9 is installed on the side of the connecting pipe 5, the second connector 10 is connected to the gas supply pipe 9, the gas supply pipe 9 is connected to the flow channel 13, and the connecting pipe 5 is rotatably equipped with an opening and closing mechanism.

[0048] Connector 6 is used to connect to pressure pump 7. After the pressure pump 7 delivers air pressure into the connecting tube 5, it flows into the expansion tube body 1, which in turn causes the gas to flow into the balloon body 3. This allows the balloon body 3 to expand or contract. The opening and closing mechanism can close or open the connecting tube 5, allowing the balloon body 3 to maintain its volume. Connector 10 is connected to external gas delivery equipment. The air pressure, through the gas delivery tube 9 and the flow channel 13, causes the gas to flow into the silicone head 14.

[0049] Furthermore, the opening and closing mechanism includes a ball valve 11 and a knob 12. The ball valve 11 is rotatably disposed inside the connecting pipe 5, and the knob 12 is disposed on the connecting pipe 5. The center position of the knob 12 is fixedly connected to the top of the ball valve 11 via a shaft.

[0050] After the balloon body 3 is expanded, turning the knob 12 will drive the ball valve 11 to rotate. The rotation of the ball valve 11 can close or open the space inside the connecting tube 5. When the ball valve 11 closes the space inside the connecting rod 5, it can prevent the gas flow inside the balloon body 3 from affecting the expansion effect of the balloon body 3, so as to maintain the expansion effect of the balloon body 3 and ensure the vasodilation effect.

[0051] Furthermore, a pressure pump 7 is connected to connector 6, and a pressure gauge 8 is installed on the pressure pump 7. When the pressure pump 7 operates in conjunction with connector 6, gas will flow into the inside of the connecting pipe 5, and the pressure can be detected by the pressure gauge 8.

[0052] Furthermore, the scraping mechanism includes a storage cylinder 24, a scraping head 26, and a drive assembly. The storage cylinder 24 is arrayed and embedded inside the annular block 22. The scraping head 26 is inserted inside the storage cylinder 24. The drive assembly for driving the scraping head 26 to move is located inside the storage cylinder 24. The top of the scraping head 26 is spherical.

[0053] When the annular block 22 moves out of the silicone head 14, the drive assembly moves and pushes the scraping head 26 to move. One end of the scraping head 26 extends into the storage tube 24. The scraping head 26 can contact the thrombus on the inner wall of the blood vessel, thereby controlling the movement of the dilation catheter body 1 and scraping away the thrombus.

[0054] Furthermore, the drive assembly includes a drive spring 28, a sliding rod 27, and a plate 30. The sliding rod 27 is disposed inside the storage cylinder 24, and one end of the sliding rod 27 is fixedly connected to the scraping head 26. The drive spring 28 is arranged around the sliding rod 27, and the plate 30 is fixedly disposed on the sliding rod 27, with one end of the drive spring 28 fixedly connected to the plate 30. When the scraping head 26 moves out of the storage cylinder 24, the drive spring 28 works to push the plate 30, which in turn drives the sliding rod 27 to move, thereby driving the scraping head 26 to move.

[0055] Furthermore, a guide block 29 is fixedly installed inside the storage tube 24, and one end of the sliding rod 27 passes through the inside of the guide block 29. The other end of the drive spring 28 is fixedly connected to the top of the guide block 29. A circular block 25 is fixedly installed inside the storage tube 24, and the sliding rod 27 passes through the circular block 25.

[0056] The inner wall of the circular block 25 is provided with a sealing ring to seal the gap between the sliding rods 27. The guide block 29 is used to guide the sliding rods 27 so that the sliding rods 27 move smoothly. When the annular block 22 resets and enters the silicone head 14, it will apply pressure to the top of the scraping head 26, and the scraping head 26 will be compressed and enter the storage tube 24.

[0057] Working principle: First, the coronary papillary balloon dilation catheter is used to dilate the narrowed or anatomically restricted area of ​​the patient's coronary artery through the balloon body 3, improving local blood perfusion. Coronary angiography is then performed to clarify the location, extent, and anatomical features of the lesion. Next, preoperative preparations are made. Under sterile conditions, the dilation catheter body 1 is inserted into the vascular system through channels such as the femoral artery or radial artery. Image guidance is used to advance the dilation catheter body 1 to the target coronary segment, ensuring that the balloon body 3 is aligned with the lesion area. Inflation of the balloon body 3 causes it to expand, thereby compressing the plaque and dilating the vessel lumen until the balloon body 3 expands to the target diameter. After the balloon body 3 expands, turning the knob 12 will rotate the ball valve 11. Rotation of the ball valve 11 allows for connection... The space inside tube 5 is closed or opened. When the ball valve 11 closes the space inside the connecting rod 5, it prevents gas flow inside the balloon body 3, thus avoiding affecting the deployment effect of the balloon body 3. This ensures that the balloon body 3 maintains its deployment effect, guaranteeing the vascular dilation effect for a certain period of time to achieve the desired dilation effect. Real-time angiography or blood flow monitoring is performed to assess the blood flow and lumen changes after dilation, thereby achieving dilation of narrowed or anatomically restricted areas within the patient's coronary arteries. After treatment, the balloon body 3 is reset, and the dilation catheter body 1 is withdrawn from the body. Postoperative management is then performed to achieve the goal of dilating the patient's coronary arteries. As the dilation catheter body 1 moves within the patient's blood vessels, it reaches the dilation site... When the thrombus is stubborn and cannot be dilated, connector 10 connects to an external gas supply device. Gas pressure, through the gas supply pipe 9 and flow channel 13, causes gas to flow into the silicone head 14, which in turn pushes the piston block 17 to move. The movement of the piston block 17, via the connecting rod 21, drives the annular block 22 and the impact head 23 to move. After the impact head 23 moves out of the silicone head 14, it comes into contact with the thrombus, thus clearing it and facilitating the dilation of the patient's coronary artery. If further thrombus removal is needed, increasing the atmospheric pressure will push the piston block 17 to move further. The movement of the piston block 17 will push the annular block 22 out of the silicone head 14. When the scraping head 26 moves out of the receiving cylinder 24, the drive spring 28 operates to push the plate. 30 will drive the sliding rod 27 to move, which in turn will drive the scraping head 26 to move. The scraping head 26 can contact the thrombus on the inner wall of the blood vessel, thereby controlling the movement of the dilation catheter body 1, which can scrape off the thrombus and further remove the thrombus adsorbed in the blood vessel, thereby achieving the purpose of dilating the patient's coronary artery and improving the treatment effect. After the air pressure entering the silicone head 14 flows back, it no longer puts pressure on the piston block 17. The first spring 20 resets and pushes the piston block 17 to reset. The reset of the piston block 17 will drive the annular block 22 to reset through the connecting rod 21. When the annular block 22 resets and enters the silicone head 14, it will put pressure on the top of the scraping head 26, and the scraping head 26 will be compressed and enter the storage cylinder 24.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coronary papillary balloon dilation catheter, characterized in that: The device includes a dilating catheter body (1), a fixing ring (2) is fixedly connected to the dilating catheter body (1), a balloon body (3) is connected to the fixing ring (2), a hole (4) is provided on the dilating catheter body (1), and the hole (4) is located on one side of the balloon body (3), and a connecting mechanism is provided at one end of the dilating catheter body (1). The inner wall of the expansion catheter body (1) is provided with a flow channel (13). The other end of the expansion catheter body (1) is fixedly connected to a silicone head (14). A stop block (16) is fixedly provided inside the silicone head (14). A piston block (17) is movably provided inside the silicone head (14), and the piston block (17) is located on one side of the stop block (16). A connecting rod (21) is fixedly provided at the center of the piston block (17). A reset mechanism for resetting the piston block (17) is provided inside the silicone head (14). An annular block (22) is fixedly connected to one end of the connecting rod (21). An impact head (23) is fixedly connected to the side of the annular block (22). A pipe (15) is connected to one end of the silicone head (14), and the other end of the pipe (15) is connected to the flow channel (13). The annular block (22) is provided with a scraping mechanism; The connecting mechanism includes a connecting pipe (5), a first connector (6), a gas supply pipe (9), and a second connector (10). The connecting pipe (5) is connected to one end of the expansion tube body (1), the first connector (6) is connected to one end of the connecting pipe (5), the gas supply pipe (9) is installed on the side of the connecting pipe (5), the second connector (10) is connected to the gas supply pipe (9), the gas supply pipe (9) is connected to the flow channel (13), and the connecting pipe (5) is rotatably equipped with an opening and closing mechanism inside. The scraping mechanism includes a storage tube (24), a scraping head (26), and a driving component. The storage tubes (24) are arrayed and embedded inside the annular block (22). The scraping head (26) is inserted inside the storage tube (24). The driving component for driving the scraping head (26) to move is located inside the storage tube (24). When the thrombus at the dilation site is too stubborn to be dilated, the impact head (23) moves out of the silicone head (14) and comes into contact with the thrombus; When it is necessary to continue removing the thrombus, the scraping head (26) moves out of the storage tube (24) and comes into contact with the thrombus on the inner wall of the blood vessel.

2. The coronary papillary balloon dilation catheter according to claim 1, characterized in that: The reset mechanism includes a support block (18), a guide cylinder (19), and a first spring (20). The support block (18) is fixedly installed inside the silicone head (14). The guide cylinder (19) is fixedly installed inside the support block (18), and the connecting rod (21) passes through the guide cylinder (19). The first spring (20) is arranged around the connecting rod (21), and one end of the first spring (20) is fixedly connected to the piston block (17), and the other end of the first spring (20) is fixedly connected to the support block (18).

3. The coronary papillary balloon dilation catheter according to claim 2, characterized in that: The opening and closing mechanism includes a ball valve (11) and a knob (12). The ball valve (11) is rotatably disposed inside the connecting pipe (5), and the knob (12) is disposed on the connecting pipe (5). The center position of the knob (12) is fixedly connected to the top of the ball valve (11) via a shaft.

4. The coronary papillary balloon dilation catheter according to claim 3, characterized in that: The No. 1 connector (6) is connected to a pressure pump (7), and a pressure gauge (8) is installed on the pressure pump (7).

5. The coronary papillary balloon dilation catheter according to claim 4, characterized in that: The top of the scraping head (26) is spherical.

6. The coronary papillary balloon dilation catheter according to claim 1, characterized in that: The drive assembly includes a drive spring (28), a sliding rod (27), and a plate (30). The sliding rod (27) is disposed inside the storage cylinder (24), and one end of the sliding rod (27) is fixedly connected to the scraping head (26). The drive spring (28) is arranged around the sliding rod (27). The plate (30) is fixedly disposed on the sliding rod (27), and one end of the drive spring (28) is fixedly connected to the plate (30).

7. The coronary papillary balloon dilation catheter according to claim 6, characterized in that: The storage tube (24) has a guide block (29) fixedly installed inside, and one end of the sliding rod (27) passes through the guide block (29), while the other end of the driving spring (28) is fixedly connected to the top of the guide block (29).

8. The coronary papillary balloon dilation catheter according to claim 7, characterized in that: The storage tube (24) has a circular block (25) fixedly installed inside, and the sliding rod (27) passes through the circular block (25).

Images