Balloon dilatation catheter for intracranial artery

Abstract

The invention discloses a balloon dilatation catheter for an intracranial artery, and belongs to the technical field of medical instruments. A balloon dilatation catheter for an intracranial artery comprises a balloon assembly, a head section catheter assembly, a tail section catheter assembly, a middle section catheter and a catheter sheath, the balloon assembly comprises a balloon body, two dredging hoses, a plurality of bowl-shaped bases and a plurality of adsorption hoses, and dredging holes are formed in the upper portion and the lower portion of the middle of the front end and the middle of the rear end of the balloon body; a plurality of containing holes are annularly and evenly formed in the periphery of the balloon body, medicine storage protrusions are fixedly arranged on the outer sides of the bowl-shaped bases, the head section catheter assembly comprises a head section catheter body, two developing rings and a connecting hose, the success rate and safety of blood vessel dilatation are improved, the risk of blood vessel injury in the dilatation process is reduced, and the safety of blood vessel dilatation is improved. The balloon body controls the expansion pressure of the blood vessel wall, and medicine is matched in the expansion process to prevent restenosis of the blood vessel and vasospasm.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a balloon dilation catheter for intracranial arteries. Background Technology

[0002] Intracranial artery balloon dilation catheters are key interventional devices for treating intracranial artery stenosis. Adapted to the delicate and tortuous anatomical characteristics of intracranial vessels, the main body consists of a balloon and a thin delivery catheter. The balloon combines dilation force with vascular compatibility, which can reduce the risk of vascular injury. Under image guidance, the catheter is precisely delivered to the stenosis site, and the balloon is slowly inflated with low pressure to open the stenotic vessel wall, restore blood flow, and improve blood supply to brain tissue. It must be operated by an experienced physician, and vascular monitoring is required during the procedure to ensure treatment safety.

[0003] When using a balloon dilation catheter for intracranial arteries, the artery is first punctured with a needle, a guidewire is inserted, and the needle is withdrawn. A catheter sheath is then advanced along the guidewire to establish a pathway. The catheter is then advanced through the sheath to the proximal end of the intracranial artery. The balloon catheter is then precisely advanced along the microguidewire to the stenosis. The balloon is slowly inflated with low pressure using a pressure pump to dilate the stenotic segment. After imaging confirms the restoration of blood flow, the balloon is deflated. During the vascular dilation process, the pressure exerted by the balloon on the blood vessel cannot be controlled, and the dilation process cannot be coordinated with medication, which can easily cause restenosis and vasospasm. To solve these problems, this application proposes a balloon dilation catheter for intracranial arteries. Summary of the Invention

[0004] The purpose of this invention is to provide a balloon dilation catheter for intracranial arteries to solve the problems mentioned in the background art: improve the success rate of vascular dilation, reduce the risk of vascular injury during dilation, and achieve real-time monitoring and precise control of dilation pressure throughout the vascular dilation process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A balloon dilation catheter for intracranial arteries includes a balloon assembly, a proximal catheter assembly, a distal catheter assembly, a mid-section catheter, and a catheter sheath. The balloon assembly includes a balloon body, two unblocking hoses, multiple bowl-shaped bases, and multiple adsorption hoses. Unblocking holes are provided at the middle of the front and rear ends of the balloon body, and multiple receiving holes are uniformly provided in a ring around the balloon body. Drug storage protrusions are fixedly provided on the outer side of each of the multiple bowl-shaped bases. The head section catheter assembly includes a head section catheter body, two imaging rings, and a connecting tubing. Two receiving grooves are spaced apart around the front end of the head section catheter body, and a pressure sensor is fixedly installed inside each of the two receiving grooves.

[0006] By adopting the above technical solution, the balloon assembly can deliver drugs while dilating the blood vessel, preventing restenosis and vasospasm, and allowing some blood to flow inside the blood vessel, thus prolonging the dilation time. The headpiece catheter assembly facilitates precise control and monitoring of the pressure during balloon dilation, preventing damage to the blood vessel.

[0007] Preferably, two unclogging hoses are respectively installed on opposite sides of the four unclogging holes, and multiple bowl-shaped bases are respectively fixed inside multiple receiving holes.

[0008] By adopting the above technical solution, the unblocking tube penetrating the unblocking hole allows blood inside the blood vessel to flow in the dilated position, and the bowl-shaped base is fixed inside the receiving hole, so that the bowl-shaped base is interconnected with the balloon body, and the bowl-shaped base rebounds after being squeezed.

[0009] Preferably, each of the multiple drug-storing protrusions has a drug-storing hole at the center of its outer side, and the inner side of the balloon body is fixed to the front end of the head section of the catheter body.

[0010] By adopting the above technical solution, a drug storage hole is opened on the outer side of the drug storage protrusion. During the expansion process, the drug storage protrusion is squeezed against the inner wall of the blood vessel, and the drug inside the drug storage protrusion is discharged through the drug storage hole. The drug is applied to the expansion position. The inner side of the balloon body is fixed to the head segment of the catheter body, so that the balloon body will not be displaced during the expansion process.

[0011] Preferably, the plurality of adsorption tubing are arranged in a ring and uniformly penetrate the middle of the balloon body, and the inner side of the plurality of adsorption tubing are arranged in a ring and penetrate the entire head section of the catheter body.

[0012] By adopting the above technical solution, the adsorption tubing is uniformly and circularly inserted through the middle of the balloon body and through the head section of the catheter body, which facilitates the adsorption tubing to be directly aligned with the inner wall of the blood vessel during the balloon body expansion, so as to adsorb the thrombus on the inner wall of the blood vessel.

[0013] Preferably, the two imaging rings are fixed around the head section of the catheter body and located at opposite ends of the two receiving grooves, with the outer sides of the two imaging rings pressed against the inner side of the balloon body.

[0014] By adopting the above technical solution, the imaging ring is fixed around the head section of the catheter body and squeezes the inside of the balloon body, which allows medical staff to more clearly understand the positional relationship between the balloon body and the diseased blood vessel under X-ray.

[0015] Preferably, the tail section catheter assembly includes a tail section catheter body, a first catheter interface is fixedly provided at the rear end of the tail section catheter body, and a second catheter interface is provided through the upper surface of the tail section catheter body at the rear.

[0016] By adopting the above technical solution, the first catheter interface at the rear end of the tail catheter body facilitates guidewire entry, adsorption and removal of thrombus on the inner wall of the blood vessel, and the second catheter interface facilitates connection with syringes and pressure pumps.

[0017] Preferably, the inlet of the connecting hose extends through the inside of the balloon body, and the connecting hose is embedded inside the walls of the head section catheter body, the middle section catheter body, and the tail section catheter body.

[0018] By adopting the above technical solution, the connecting tubing penetrates the inner side of the balloon body and is embedded in the walls of the head section, middle section, and tail section of the catheter body, which facilitates the injection of contrast agent and pressurization of the balloon body through the connecting tubing.

[0019] Preferably, the head section catheter body, the middle section catheter body, and the tail section catheter body are fixedly connected to each other, and each of the head section catheter body, the middle section catheter body, and the tail section catheter body has an axially penetrating guide wire channel with the same diameter on its inner side.

[0020] By adopting the above technical solution, the head section, middle section, and tail section of the catheter body are fixedly connected to form a complete catheter, and guidewire channels of the same diameter are opened to allow the guidewire to enter the head section, middle section, and tail section of the catheter body.

[0021] Preferably, the head section of the catheter is made of ultra-soft polyurethane, the middle section of the catheter is made of medium-hardness Pebax and sparse stainless steel braided mesh, and the tail section of the catheter is made of high-hardness nylon and high-density stainless steel braided mesh.

[0022] By adopting the above technical solutions, the soft design of the proximal catheter body reduces damage to the blood vessel, the mid-section catheter can improve the torsional control and support in the blood vessel, and the tail section catheter body can improve the overall pushability.

[0023] Preferably, the head section of the catheter body has a flexible head end fixedly provided at the front end, and the tail section of the catheter body passes through the inside of the catheter sheath.

[0024] By adopting the above technical solution, the flexible tip of the proximal catheter body reduces the damage to the inner side of the blood vessel caused by the movement of the proximal catheter body within the blood vessel, while the tail catheter body penetrates the inner side of the catheter sheath, limiting the tail catheter and providing a channel for entering the blood vessel.

[0025] Compared with the prior art, the beneficial effects of the present invention are: 1) When using this intracranial artery balloon dilation catheter, after the balloon body is dilated in the blood vessel, the drug-reservoir protrusion connected to the bowl-shaped base squeezes the inner wall of the blood vessel, releasing the antiproliferative and antispasmodic drugs stored inside the drug-reservoir protrusion through the drug-reservoir hole, preventing restenosis and vasospasm. The unblocking tube installed in the unblocking hole allows blood to flow in the unblocking tube when the balloon body dilates the obstructed blood vessel, supplying blood to the distal brain tissue and prolonging the safe dilation time.

[0026] 2) When using this intracranial artery balloon dilation catheter, it is connected by the head section, the middle section, and the tail section of the catheter body. The head section, the middle section, and the tail section of the catheter body are made of different materials. The head section of the catheter body adopts a non-invasive soft tip design to prevent damage to the blood vessel. The middle section of the catheter body improves the torsional control and support in the blood vessel. The tail section of the catheter body improves the overall pushing ability in the blood vessel.

[0027] 3) When using this intracranial artery balloon dilation catheter, the connecting tubing is inserted through the balloon body and embedded in the walls of the head, middle, and tail sections of the catheter body. The contrast agent is injected into the balloon body through a syringe connected to the second catheter interface. The balloon body's expansion pattern is observed in real time to determine its position. The balloon body's expansion can be controlled by a pressure pump connected to the second catheter interface, and the balloon body's expansion pressure is fed back in real time by a pressure sensor to avoid over-inflation that could lead to vascular rupture. The suction tubing is inserted through the balloon body and the head section of the catheter body, with the inlet of the suction tubing adhering to the inner wall of the blood vessel. Thrombi at the dilation site are aspirated through a negative pressure device connected to the first catheter interface, thus dilating the blood vessel while clearing the thrombus within the vessel. Attached Figure Description

[0028] Figure 1 This is an isometric view of the present invention; Figure 2 This is an axial view of the balloon assembly of the present invention; Figure 3 This is a schematic diagram of the head section catheter assembly of the present invention from an axial perspective; Figure 4 This is a first axial cross-sectional view of the balloon assembly of the present invention; Figure 5 This is a second axial cross-sectional view of the balloon assembly of the present invention; Figure 6 This is a top-section axial view of the balloon assembly of the present invention; Figure 7 This is a side-projection axis schematic diagram of the balloon assembly of the present invention; Figure 8 This is a side-section axial view of the tail section duct assembly of the present invention; Figure 9This is a schematic diagram of the axial side of the bowl-shaped base of the present invention; Figure 10 This is a schematic diagram of the axial side of the drug storage protrusion of the present invention; Figure 11 This is an enlarged schematic diagram of point A in the present invention; Figure 12 This is an enlarged schematic diagram of point B in the present invention; Figure 13 This is an enlarged schematic diagram of point C in the present invention.

[0029] The following are the labeling instructions in the diagram: 1. Balloon assembly; 2. Head section catheter assembly; 3. Mid section catheter; 4. Catheter sheath; 5. Tail section catheter assembly; 6. Flexible tip; 101. Balloon body; 102. Unblocking tubing; 103. Adsorption tubing; 104. Drug reservoir protrusion; 105. Drug reservoir hole; 106. Bowl-shaped base; 107. Unblocking hole; 108. Receiving hole; 201. Head section catheter body; 202. Connecting tubing; 203. Receiving groove; 204. Pressure sensor; 205. Imaging ring; 501. Tail section catheter body; 502. First catheter interface; 503. Second catheter interface. Detailed Implementation

[0030] For examples, please refer to Figures 1-13 A balloon dilation catheter for intracranial arteries includes a balloon assembly 1, a proximal catheter assembly 2, a distal catheter assembly 5, a mid-section catheter 3, and a catheter sheath 4. A flexible tip 6 is fixedly disposed at the front end of the proximal catheter body 201. The distal catheter body 501 penetrates the inner side of the catheter sheath 4. The length of the mid-section catheter 3 is greater than that of the proximal catheter body 201 and the distal catheter body 501. The flexible tip 6 is disposed at the front end of the proximal catheter body 201 and is made of an ultra-soft thermoplastic elastomer that is softer than the proximal catheter body 201. It is conical in shape to minimize stimulation and damage to the blood vessel wall, making it safer for the proximal catheter assembly 2 to enter the blood vessel with the guidewire. The distal catheter body 501 penetrates the inner side of the catheter sheath 4, providing a limit to the distal catheter body 501 within the catheter sheath 4, allowing the proximal catheter body 201, the mid-section catheter 3, and the distal catheter body 501 to penetrate the catheter sheath 4 and enter the blood vessel.

[0031] Specifically, the balloon assembly 1 includes a balloon body 101, two unblocking hoses 102, multiple bowl-shaped bases 106, and multiple adsorption hoses 103. Unblocking holes 107 are provided at the middle of the front and rear ends of the balloon body 101, and multiple receiving holes 108 are uniformly provided in a ring around the balloon body 101. Drug storage protrusions 104 are fixedly provided on the outer side of the multiple bowl-shaped bases 106. Two unblocking hoses 102 are respectively inserted through the four unblocking holes 107 on opposite sides. The multiple bowl-shaped bases 106 are respectively fixed inside the multiple receiving holes 108. Multiple drug storage protrusions 104 have drug storage holes 105 on their outer middle parts. The inner side of the balloon body 101 is fixed to the front end of the head tube body 201. Multiple adsorption tubes 103 are evenly inserted in a ring around the middle of the balloon body 101. The inner side of the multiple adsorption tubes 103 are inserted in a ring around the head tube body 201.

[0032] Furthermore, the balloon body 101 is fixed around the catheter body, and the balloon body 101 is in an expanded state. The two ends of the balloon body 101 have a tapered, gradually transitioning design to eliminate hard steps and greatly improve its passage within the blood vessel. Unblocking holes 107 are opened at both ends of the balloon body 101, and an unblocking tube 102 is inserted through the unblocking holes 107. When the balloon body 101 expands within the blood vessel, blood flows through the unblocking tube 102 from the expanded blockage location, supplying blood to the distal brain tissue, extending the safe expansion time, and preventing surgical risks caused by interrupted blood supply. During the expansion of the blood vessel, blood flow within the blood vessel is not affected. The bowl-shaped base 106 is fixed within the receiving hole 108, and the receiving hole 108 and the bowl-shaped base... The shape of the 106 fits perfectly, with the bowl-shaped base 106 communicating with the balloon body 101. During expansion, the medium fills the balloon, forming an elastic buffer. The bowl-shaped base 106 is fixedly connected to the drug-storing protrusion 104. The drug-storing protrusion 104 is pre-stored with anti-proliferative drugs and antispasmodic drugs. During the expansion of the balloon body 101, the drug-storing protrusion 104 squeezes the bowl-shaped base 106, causing the drug-storing protrusion 104 to deform. The drugs are then discharged onto the blood vessel wall through the drug-storing hole 105, preventing restenosis and vasospasm, and improving the effect of vasodilation. The drug-storing protrusion 104 can also increase the friction on the blood vessel to prevent displacement. Since the drug-storing protrusion 104 is made of ultra-soft thermoplastic elastomer, it increases the friction on the blood vessel surface without damaging the blood vessel wall. When the balloon body 103 expands, its inlet adheres to the blood vessel wall. The suction tube 103 runs through the balloon body 101 and the head catheter body 201. It can use negative pressure to adsorb the thrombus at the point where the suction tube 103 is attached, improving the efficiency of thrombus removal in blood vessels. It not only dilates blood vessels to improve blood flow but also removes thrombi that cause blood vessel blockage. Both the suction tube 103 and the unblocking tube 102 are made of fluorinated ethylene propylene. When the balloon body 101 is not expanded, the suction tube 103 and the unblocking tube 102 are in a pleated state inside the balloon body 101 and will not affect the movement of the balloon body 101 within the blood vessel by the head catheter body 201. During the expansion of the balloon body 101, the suction tube 103 and the unblocking tube 102 gradually change from a pleated state to a cylindrical tube. After the balloon body 101 is expanded, it adaptively facilitates blood flow and adsorbs thrombi.

[0033] Specifically, the head section catheter assembly 2 includes a head section catheter body 201, two imaging rings 205 and a connecting hose 202. The head section catheter body 201 has two receiving grooves 203 spaced apart around its front end, and pressure sensors 204 are fixedly installed inside each of the two receiving grooves 203. Two imaging rings 205 are fixed around the head section of the catheter body 201 and located at opposite ends of the two receiving grooves 203. The outer sides of the two imaging rings 205 are pressed against the inner side of the balloon body 101.

[0034] Furthermore, the receiving groove 203 of the headpiece catheter assembly 2 is annular, and the pressure sensor 204 is placed inside the receiving groove 203. When the balloon body 101 expands, the pressure generated by the balloon body 101 is monitored to prevent the balloon body 101 from over-expanding and causing blood vessel rupture. By monitoring the pressure of the balloon body 101 in real time and observing the blood vessel status based on X-ray, the expansion pressure of the balloon body 101 can be precisely adjusted to ensure the safety of the surgical procedure and prevent blood vessel damage that could lead to medical accidents. The contrast ring 205 is squeezed inside the balloon body 101. Medical staff can use the X-ray imaging of the contrast ring 205 to more clearly understand the positional relationship between the balloon body 101 and the diseased blood vessel, accurately positioning the balloon body 101 at the point of effective expansion of the blood vessel narrowing, preventing the balloon body 101 from failing to fully support the narrowed blood vessel after expansion, and improving the success rate of blood vessel dilation.

[0035] Specifically, the tail section catheter assembly 5 includes a tail section catheter body 501, a first catheter interface 502 is fixedly provided at the rear end of the tail section catheter body 501, and a second catheter interface 503 is provided through the rear end of the upper surface of the tail section catheter body 501. The inlet of the connecting hose 202 passes through the inside of the balloon body 101. The connecting hose 202 is embedded in the wall of the head section catheter body 201, the middle section catheter 3, and the tail section catheter body 501. The head section catheter body 201, the middle section catheter 3, and the tail section catheter body 501 are fixedly connected to each other. The inner sides of the head section catheter body 201, the middle section catheter 3, and the tail section catheter body 501 are all provided with axially penetrating guide wire channels of the same diameter. The head section catheter body 201 is made of ultra-soft polyurethane, the middle section catheter 3 is made of medium-hardness Pebax and sparse stainless steel braided mesh, and the tail section catheter body 501 is made of high-hardness nylon and high-density stainless steel braided mesh.

[0036] Furthermore, the first catheter interface 502 facilitates guidewire entry and thrombus removal, while the second catheter interface 503 facilitates connection to a syringe and pressure pump. A connecting tubing 202 passes through the inner side of the balloon body 101 and is embedded within the walls of the head section catheter body 201, the middle section catheter 3, and the tail section catheter body 501. A syringe can be connected to the second catheter interface 503. Air is expelled from the balloon body 101 through the connecting tubing 202, and contrast agent is injected. After contrast agent injection, the balloon body 101 expands within the blood vessel by connecting to the pressure pump through the second catheter interface 503. The head section catheter body 201, the middle section catheter 3, and the tail section catheter body 501 are fixedly connected in pairs to form integral catheters of different diameters. Guidewire channels of the same diameter facilitate guidewire passage. The head section catheter body 201 is composed of… Made of ultra-soft polyurethane, it conforms to the natural curvature of blood vessels to the maximum extent, achieving non-invasive passage. The mid-section catheter 3 is made of medium-hardness Pebax and sparse stainless steel braided mesh, which can better absorb and transmit torque, while providing a certain amount of support to accurately execute the doctor's operation for rotation. The tail catheter body 501 is made of high-hardness nylon and high-density stainless steel braided mesh to prevent bending and wrinkling in the push path, ensuring that the thrust and response are directly transmitted to the head catheter body 201. The head catheter body 201, mid-section catheter 3 and tail catheter body 501 have different diameters, with the diameter increasing from the head catheter body 201 to the tail catheter body 501. This makes it easier for the head catheter body 201 to enter the narrow blood vessel position and prevents the blood vessel from being too narrow to expand.

[0037] The procedure for using this invention is as follows: During the treatment of intracranial arterial stenosis, the artery is first punctured, and the catheter sheath 4 is inserted into the blood vessel. Then, the tail section of the catheter body 501 is pushed, driving the middle section of the catheter 3 to advance the head section of the catheter body 201 along the guidewire to the target blood vessel. The flexible tip 6 at the front end of the head section of the catheter body 201 ensures smooth passage through the aortic arch and tortuous intracranial blood vessels to reach the lesion location without damaging the vessels along the way. The contrast agent is connected to the syringe through the second catheter interface 503 and delivered to the balloon body 101 through the connecting tubing 202. This contrast agent is diluted and needs to be diluted with saline according to the specified ratio. Dilution reduces the osmotic pressure of the contrast agent, minimizing stimulation to the intracranial vascular endothelium. Simultaneously, the contrast agent can be visualized under imaging, allowing real-time observation of the balloon's expansion morphology and position to ensure it fits the stenotic segment, avoiding blind operation. The visualization rings 205 around the head section of the catheter body 201 are displayed under image guidance, clearly showing the balloon... The balloon body 101 is positioned directly opposite the narrowed blood vessel. The second catheter interface 503 is connected to a pressure pump. The balloon body 101 is expanded through the connecting tubing 202. The pressure of the balloon body 101 is monitored in real time by the pressure sensor 204. A pressure threshold alarm function is designed. When the pressure exceeds the preset value, the inflation automatically stops, improving the safety of the operation. During expansion, the drug storage protrusion 104 connected to the bowl-shaped base 106 squeezes the blood vessel wall. After being squeezed, the drug storage protrusion 104 releases the pre-stored antiproliferative drugs and antispasmodic drugs through the drug storage hole 105, preventing the blood vessel from narrowing again and causing vasospasm. The drug storage protrusion 104 also increases the friction of the blood vessel wall to prevent the balloon body 101 from shifting. After the narrowed blood vessel is expanded, the unblocking tubing 102 allows some blood to flow, supplying blood to the distal brain tissue and prolonging the safe expansion time. After vasodilation, the inlet of the suction tubing 103 is attached to the vessel wall. When there is a thrombus on the vessel wall, the first catheter interface 502 is connected to a negative pressure machine, so that the suction tubing 103 discharges the thrombus into the inner side of the head catheter body 201, removing the thrombus on the vessel wall. The removed thrombus is then discharged and cleaned through the head catheter body 201, the middle catheter 3, and the tail catheter body 501, reducing restenosis after vasodilation and achieving simultaneous vasodilation and thrombectomy of the narrowed vessel.

[0038] 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 preferred examples and are not intended to limit 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 balloon dilation catheter for intracranial arteries, comprising a balloon assembly (1), a proximal catheter assembly (2), a distal catheter assembly (5), a mid-section catheter (3), and a catheter sheath (4), characterized in that: The balloon assembly (1) includes a balloon body (101), two unblocking hoses (102), multiple bowl-shaped bases (106) and multiple adsorption hoses (103). Unblocking holes (107) are provided at the middle of the front and rear ends of the balloon body (101) at both the top and bottom. Multiple receiving holes (108) are uniformly provided in a ring around the balloon body (101). Drug storage protrusions (104) are fixedly provided on the outer side of each of the multiple bowl-shaped bases (106). The head section catheter assembly (2) includes a head section catheter body (201), two imaging rings (205) and a connecting hose (202). The head section catheter body (201) has two receiving grooves (203) spaced apart at the front end. Pressure sensors (204) are fixedly installed inside the two receiving grooves (203).

2. The intracranial artery balloon dilation catheter according to claim 1, characterized in that: Two unclogging hoses (102) are respectively installed through each of the four unclogging holes (107) on opposite sides, and multiple bowl-shaped bases (106) are respectively fixed inside multiple receiving holes (108).

3. The intracranial artery balloon dilation catheter according to claim 1, characterized in that: Each of the multiple drug storage protrusions (104) has a drug storage hole (105) in the middle of its outer side, and the inner side of the balloon body (101) is fixed to the front end of the head section catheter body (201).

4. The intracranial artery balloon dilation catheter according to claim 1, characterized in that: Multiple adsorption tubing (103) are evenly arranged in a ring around the middle of the balloon body (101), and multiple adsorption tubing (103) are arranged in a ring around the head section catheter body (201).

5. The intracranial artery balloon dilation catheter according to claim 1, characterized in that: The two imaging rings (205) are respectively fixed around the head section of the catheter body (201) and located at opposite ends of the two receiving grooves (203), with the outer sides of the two imaging rings (205) pressed against the inner side of the balloon body (101).

6. The intracranial artery balloon dilation catheter according to claim 1, characterized in that: The tail section catheter assembly (5) includes a tail section catheter body (501), a first catheter interface (502) is fixedly provided at the rear end of the tail section catheter body (501), and a second catheter interface (503) is provided through the upper surface of the tail section catheter body (501) at the rear.

7. The intracranial artery balloon dilation catheter according to claim 1, characterized in that: The inlet of the connecting hose (202) passes through the inside of the balloon body (101), and the connecting hose (202) is embedded in the tube wall of the head section catheter body (201), the middle section catheter (3) and the tail section catheter body (501).

8. The intracranial artery balloon dilation catheter according to claim 1, characterized in that: The head section catheter body (201), the middle section catheter (3) and the tail section catheter body (501) are fixedly connected to each other, and the inner sides of the head section catheter body (201), the middle section catheter (3) and the tail section catheter body (501) are all provided with axially penetrating guide wire channels of the same diameter.

9. A balloon dilation catheter for intracranial arteries according to claim 8, characterized in that: The head section catheter body (201) is made of ultra-soft polyurethane, the middle section catheter (3) is made of medium-hardness Pebax and sparse stainless steel braided mesh, and the tail section catheter body (501) is made of high-hardness nylon and high-density stainless steel braided mesh.

10. A balloon dilation catheter for intracranial arteries according to claim 9, characterized in that: The head section of the catheter body (201) is fixedly provided with a flexible head end (6) at the front end, and the tail section of the catheter body (501) passes through the inside of the catheter sheath (4).

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