Spinous process balloon dilatation catheter

Abstract

The present invention relates to a spinous process balloon dilatation catheter, comprising a balloon, an outer tube and an inner tube coaxially slidably arranged inside the outer tube, one end of the inner tube extending from the outer tube to form an extended section, the balloon being arranged on the extended section of the inner tube, the extended section penetrating into the balloon and the extended section facing away from one end of the outer tube and connected to one end of the balloon, the other end of the balloon being connected to the outer tube, a plurality of spinous process wires being arranged on the balloon, the plurality of spinous process wires wrapping the balloon, a control member being arranged between the spinous process wires and the balloon, both ends of the spinous process wires being inserted into the control member and sliding on the control member along the length direction of the outer tube, the spinous process wires being made of a material with deformation characteristics, the present invention has the effect of restoring the spinous process wires to their original positions, thereby preventing the spinous process wires from getting stuck in the blood vessels, and preventing the balloon catheter from getting stuck by the lesion or the indwelling stent and being difficult to be removed when being removed, thereby making the withdrawal of the balloon catheter more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of balloon catheters, and in particular to a spinous process balloon dilatation catheter. Background Art

[0002] A balloon dilatation catheter is a medical interventional device that can be used to treat dilatation of heart and vascular stenosis. Special balloon dilatation catheters include cutting balloons and spinous process balloons. Among them, the coronary artery spinous process balloon catheter produced by Goldman Co., Ltd. of Japan is designed with three nylon spinous processes on the surface from the proximal to the distal end of the balloon. The spinous processes are used to eliminate possible balloon slippage during balloon dilatation. As balloon slippage is eliminated, a better dilatation effect is achieved.

[0003] Then, during the use of this spinous process balloon, when the balloon is deflated to remove the balloon catheter from the body, the spinous process wire often cannot return to its original state after the balloon is deflated, thereby affecting the withdrawal of the balloon catheter. There is a possibility that the balloon catheter is stuck by the lesion or the indwelling stent, etc., making it difficult to remove. Summary of the invention

[0004] Therefore, the present invention aims to solve the technical problem that the spinous process wire cannot return to its original state, thereby affecting the withdrawal of the balloon catheter, thereby providing a spinous process balloon dilatation catheter.

[0005] A spinous process balloon dilatation catheter comprises a balloon, an outer tube and an inner tube coaxially slidably arranged inside the outer tube, one end of the inner tube extends from the outer tube to form an extended section, the balloon is arranged on the extended section of the inner tube, the extended section penetrates into the balloon and is connected to one end of the balloon with its back facing one end of the outer tube, the other end of the balloon is connected to the outer tube, a plurality of spinous process wires are arranged on the balloon, the plurality of spinous process wires wrap the balloon, a control member is arranged between the spinous process wires and the balloon, both ends of the spinous process wires are inserted into the control member and slide on the control member along the length direction of the outer tube, and the spinous process wires are made of a material with deformation properties.

[0006] Furthermore, the control member includes a distal sleeve arranged on the end of the extended section facing away from the outer tube, the spinous process wire is arranged in the distal sleeve, a proximal sleeve is arranged at the connection between the balloon and the outer tube, a plurality of first movable grooves are opened on the proximal sleeve, one end of the spinous process wire extends into the first movable groove, and slides in the first movable groove.

[0007] Furthermore, a second movable groove is provided in the distal sleeve toward one end of the spinous process wire, and one end of the spinous process wire toward the second movable groove extends into the second movable groove and slides in the second movable groove.

[0008] Furthermore, the cross-sections of the first movable groove and the second movable groove decrease from the bottom of the groove to the groove mouth, and the two ends of the spinous process wire match the first movable groove and the second movable groove. When the end of the spinous process wire slides to the groove mouth position in the first movable groove and the second movable groove, the side walls at the two ends of the spinous process wire are respectively pressed against the side walls of the first movable groove and the second movable groove.

[0009] Furthermore, a boss is arranged on the outer surface of the spinous process wire facing away from the balloon, the boss is arranged along the length direction of the spinous process wire, the corners of the boss are arranged in arc shape, and the two ends of the boss and the spinous process wire form step surfaces.

[0010] Furthermore, the cross-section of the spinous process filament is set to be a triangle, a rhombus, a rectangle or a circle, and the cross-section of the boss is set to be a triangle.

[0011] Furthermore, the spinous process wire is made of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyamide, nylon or PEBAX material.

[0012] Furthermore, a developing component is provided on the extending section, and the developing component is sleeved on the extending section.

[0013] Furthermore, a proximal sea wave tube is connected to one end of the outer tube extending backward, the proximal sea wave tube extends into the outer tube and slides inside the outer tube, the inner tube extends into the proximal sea wave tube and slides inside the proximal sea wave tube, and a distal sea wave tube is arranged at one end of the proximal sea wave tube facing backward to the outer tube.

[0014] Furthermore, a balloon catheter seat is provided at the end of the distal hypotube facing away from the balloon, a balloon catheter sheath is provided between the balloon catheter seat and the distal hypotube, and the end of the distal hypotube facing away from the proximal hypotube extends out of the balloon catheter seat and is connected to the balloon catheter seat.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. The spinous process balloon dilatation catheter provided by the present invention comprises a balloon, an outer tube and an inner tube coaxially slidably arranged inside the outer tube, one end of the inner tube extends from the outer tube to form an extended section, the balloon is arranged on the extended section of the inner tube, the extended section penetrates into the balloon and the extended section is connected to one end of the balloon with its back to one end of the outer tube, the other end of the balloon is connected to the outer tube, a plurality of spinous process wires are arranged on the balloon, the plurality of spinous process wires wrap the balloon, a control member is arranged between the spinous process wires and the balloon, both ends of the spinous process wires are inserted into the control member and slide on the control member along the length direction of the outer tube, the spinous process wires are made of a material with deformation properties, when the balloon is filled with contrast agent and expanded, since the balloon is located in the space surrounded by the spinous process wires, the balloon expands and continuously presses against the side walls of the spinous process wires. When the balloon is in use, the two ends of the spinous process wire move slightly closer to each other under the action of the control member. When the balloon is used well, the balloon stops expanding and recovers its deformation. After the balloon shrinks, due to the deformation recovery characteristics of the spinous process wire material, the spinous process wire can slide on the control member, so that the two ends of the spinous process wire move away from each other, so that the two ends of the spinous process wire return to their original positions, so that the spinous process wire can recover accordingly, and the spinous process wire will not be unable to return to its original position, which will cause the spinous process wire to get stuck in the blood vessel. When the balloon is removed, the balloon catheter is stuck by the lesion or the indwelling stent and is difficult to remove, which affects the withdrawal of the balloon catheter.

[0017] 2. The spinous process balloon dilatation catheter provided by the present invention comprises a control member including a distal sleeve arranged on the end of the extended section facing away from the outer tube, the spinous process wire is arranged in the distal sleeve, a proximal sleeve is arranged at the connection between the balloon and the outer tube, a plurality of first movable grooves are opened on the proximal sleeve, one end of the spinous process wire extends into the first movable groove and slides in the first movable groove, after the balloon is filled with contrast agent and expanded, since the balloon is located in the space surrounded by the spinous process wires, the balloon expands and continuously conflicts with the side wall of the spinous process wire, at this time the spinous process wire The expansion is supported by the radial force, so that one end of the spinous process wire moves slightly in the first movable groove. When the balloon stops expanding, the balloon contracts. At this time, due to the recovery deformation characteristics of the spinous process wire, the spinous process wire moves in the opposite direction of the first movable groove again until the end of the spinous process wire returns to its original position in the first movable groove, thereby enabling the spinous process wire to return to the position before the balloon is expanded, so that the spinous process wire will not get stuck in the blood vessel due to expansion, thereby allowing the dilatation catheter to be smoothly withdrawn from the human body.

[0018] 3. The spinous process balloon dilatation catheter provided by the present invention has a second movable groove in the distal sleeve facing one end of the spinous process wire, and the spinous process wire extends into the second movable groove towards one end of the second movable groove and slides in the second movable groove. The balloon expands and continuously contacts the side wall of the spinous process wire. At this time, the spinous process wire is expanded by the radial support force, and the end of the spinous process wire facing away from the first movable groove moves slightly in the second movable groove. When the balloon stops expanding, the balloon contracts, and again due to the spinous process wire's deformation recovery characteristics, the spinous process wire moves in the second movable groove in the opposite direction of the initial movement until the spinous process wire returns to its original position in the second movable groove, thereby further preventing the spinous process wire from getting stuck in the blood vessel due to unfolding, thereby allowing the dilatation catheter to be smoothly withdrawn from the human body.

[0019] 4. The spinous process balloon dilatation catheter provided by the present invention has a cross-section of the first movable groove and the second movable groove that decreases from the groove bottom to the groove opening, and the two ends of the spinous process wire match the first movable groove and the second movable groove. When the end of the spinous process wire slides to the groove opening position in the first movable groove and the second movable groove, the side walls of the two ends of the spinous process wire are respectively pressed against the side walls of the first movable groove and the second movable groove. After the balloon is filled with contrast agent and expanded, since the balloon is located in the space surrounded by the spinous process wires, the balloon expands and continuously contacts the side walls of the spinous process wire, so that the spinous process wire is subjected to radial thrust, so that the two ends of the spinous process wire are respectively in the first movable groove and the second movable groove. When the two ends of the spinous process wire are about to slide to the notches of the first movable groove and the second movable groove, the side walls of the end of the spinous process wire and the inner walls at the notches gradually contact and press against each other, thereby effectively limiting the spinous process wire and limiting the position of the spinous process wire, thereby preventing the spinous process wire from sliding out of the first movable groove and the second movable groove. At the same time, the two ends of the spinous process wire have a range of movement, which can better prevent the spinous process wire from breaking when the balloon is inflated too much. In addition, after the spinous process wire recovers its deformation, the deflection of the spinous process wire is effectively limited, so that the spinous process wire can better restore its original position and state, preventing the spinous process wire from getting stuck during the withdrawal of the balloon catheter.

[0020] 5. The spinous process balloon dilatation catheter provided by the present invention has a boss arranged on the outer surface of the spinous process wire facing away from the balloon, the boss is arranged along the length direction of the spinous process wire, the corners of the boss are arranged in arc shape, the two ends of the boss and the spinous process wire form step surfaces, the arrangement of the boss enables the catheter to pass through the plaque-like lesions in the blood vessels better by forming a step surface between the boss and the spinous process wire, and at the same time, when the balloon reaches the lesion, the contrast agent is rushed into the catheter to expand and hold the opening, so that the catheter can be better embedded in the plaque and anchor the balloon, and the corners on the boss are arranged in arc shape, thereby preventing the outer periphery of the spinous process wire from being too sharp and damaging the blood vessels.

[0021] 6. The spinous process balloon dilatation catheter provided by the present invention has a developing component on the extended end, and the developing component is arranged on the extended section. Through the arrangement of the developing component, the developing property of the balloon can be improved under X-ray fluoroscopy, thereby helping doctors understand the precise position of the balloon, and further facilitating the doctor to locate and perform medical operations.

[0022] 7. The spinous process balloon dilatation catheter provided by the present invention has a proximal sea wave tube connected to one end of the outer tube's dorsal extension section, the proximal sea wave tube extends into the outer tube and slides inside the outer tube, the inner tube extends into the proximal sea wave tube and slides inside the proximal sea wave tube, and a distal sea wave tube is provided at the end of the proximal sea wave tube facing away from the outer tube. Since the sea wave tube has the highest strength in the balloon dilatation catheter, it can effectively transmit force and torque to the distal end, and the inner tube is flexible, so it can better pull the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the spinous process balloon dilatation catheter of the present invention;

[0025] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0026] Figure 3 for Figure 1 Enlarged view of middle part B;

[0027] Figure 4 It is a partial schematic diagram of the structure on the inner extension section of the balloon of the present invention;

[0028] Figure 5 is a cross-sectional view of the spinous process balloon dilatation catheter of the present invention;

[0029] Figure 6 for Figure 5 Enlarged view of the middle C part;

[0030] Figure 7 It is a partial cross-sectional view of the connection relationship between the control member and the spinous process wire of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the spinous process filaments in the present invention.

[0032] Description of reference numerals:

[0033] 1. Balloon; 2. Outer tube; 3. Inner tube; 31. Extension section; 4. Spinous process wire; 5. Control member; 51. Distal sleeve; 52. Proximal sleeve; 53. First movable groove; 54. Second movable groove; 6. Boss; 7. Development member; 71. First development ring; 72. Second development ring; 8. Proximal hypotube; 9. Distal hypotube; 10. Balloon catheter seat; 11. Balloon catheter sheath. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Example

[0039] Reference Figure 1-Figure 8As shown, the present invention provides a spinous process balloon dilatation catheter, comprising a balloon 1, an outer tube 2 and an inner tube 3 coaxially slidably arranged inside the outer tube 2, one end of the inner tube 3 extends from the outer tube 2 to form an extended section 31, the balloon 1 is arranged on the extended section 31 of the inner tube 3, the extended section 31 penetrates into the balloon 1 and the extended section 31 is connected to one end of the balloon 1 with its back to the outer tube 2, the other end of the balloon 1 is connected to the outer tube 2, a plurality of spinous process wires 4 are arranged at the balloon 1, the plurality of spinous process wires 4 wrap the balloon 1, a control part 5 is arranged between the spinous process wires 4 and the balloon 1, both ends of the spinous process wires 4 are inserted into the control part 5 and slide on the control part 5 along the length direction of the outer tube 2, and the spinous process wires 4 are made of a material with deformation properties.

[0040] When the balloon 1 is filled with contrast agent and expanded, since the balloon 1 is located in the space surrounded by the spinous process filaments 4, the balloon 1 expands and continuously contacts the side walls of the spinous process filaments 4. At this time, the spinous process filaments 4 are expanded by the radial support force and then embedded in the plaque at the lesion. During the expansion of the balloon 1, under the action of the control member 5, the two ends of the spinous process filaments 4 move slightly closer to each other. When the balloon 1 is used well, the balloon 1 stops expanding and recovers its deformation. After the balloon 1 is contracted, due to the deformation recovery characteristics of the material of the spinous process filaments 4, the spinous process filaments 4 can slide on the control member 5, so that the two ends of the spinous process filaments 4 move in a direction away from each other, so that the two ends of the spinous process filaments 4 return to their original positions, so that the spinous process filaments 4 can recover accordingly, and the spinous process filaments 4 will not be unable to return to their original positions, which will cause the spinous process filaments 4 to get stuck in the blood vessel. When the balloon 1 catheter is removed, it is difficult to remove because it is stuck by the lesion or the indwelling stent, which affects the withdrawal of the balloon 1 catheter.

[0041] The control member 5 includes a distal sleeve 51 arranged on the end of the extended section 31 facing away from the outer tube 2, the spinous process wire 4 is arranged in the distal sleeve 51, and a proximal sleeve 52 is provided at the connection between the balloon 1 and the outer tube 2. A plurality of first movable grooves 53 are opened on the proximal sleeve 52, and one end of the spinous process wire 4 extends into the first movable groove 53 and slides in the first movable groove 53. After the balloon 1 is inflated by filling with contrast agent, since the balloon 1 is located in the space surrounded by the spinous process filaments 4, the balloon 1 expands and continuously contacts the side walls of the spinous process filaments 4. At this time, the spinous process filaments 4 are expanded by the radial support force, and one end of the spinous process filaments 4 moves slightly in the first movable groove 53. When the balloon 1 stops expanding, the balloon 1 contracts. At this time, due to the deformation recovery characteristics of the spinous process filaments 4, the spinous process filaments 4 move in the opposite direction of the first movable groove 53 again until the end of the spinous process filaments 4 returns to their original position in the first movable groove 53, thereby allowing the spinous process filaments 4 to return to their original position before the balloon 1 is inflated, so that the spinous process filaments 4 will not get stuck in the blood vessels due to unfolding, so that the dilatation catheter can be smoothly withdrawn from the human body.

[0042] A second movable groove 54 is opened in the distal sleeve 51 towards one end of the spinous process wire 4, and the end of the spinous process wire 4 extending towards the second movable groove 54 is inserted into the second movable groove 54 and slides in the second movable groove 54. The balloon 1 expands and continuously contacts the side wall of the spinous process wire 4. At this time, the spinous process wire 4 is expanded by the radial support force. At this time, the end of the spinous process wire 4 facing away from the first movable groove 53 moves slightly in the second movable groove 54. When the balloon 1 stops expanding, the balloon 1 contracts, and again due to the deformation recovery characteristics of the spinous process wire 4, the spinous process wire 4 moves in the second movable groove 54 in the opposite direction of the initial movement until the spinous process wire 4 returns to its original position in the second movable groove 54, thereby further preventing the spinous process wire 4 from getting stuck in the blood vessel due to unfolding, so that the dilatation catheter can be smoothly withdrawn from the human body.

[0043] The cross-sections of the first movable groove 53 and the second movable groove 54 decrease from the groove bottom to the groove opening, and the two ends of the spinous process wire 4 match the first movable groove 53 and the second movable groove 54. When the ends of the spinous process wire 4 slide to the groove opening position in the first movable groove 53 and the second movable groove 54, the side walls at the two ends of the spinous process wire 4 are respectively pressed against the side walls of the first movable groove 53 and the second movable groove 54. After the balloon 1 is filled with contrast agent and expanded, since the balloon 1 is located in the space surrounded by the spinous process wires 4, the balloon 1 expands and continuously contacts the side walls of the spinous process wire 4, so that the spinous process wire 4 is subjected to radial thrust, so that the two ends of the spinous process wire 4 slide in the first movable groove 53 and the second movable groove 54 respectively. When the spinous process wire 4 is inflated, the balloon 1 is inflated and the side walls of the spinous process wire 4 are continuously pressed against each other. When the two ends of the spinous process 4 are about to slide to the notches of the first movable groove 53 and the second movable groove 54, the side walls of the ends of the spinous process 4 and the inner walls at the notches gradually contact and press against each other, thereby effectively limiting the spinous process 4 and limiting the position of the spinous process 4, thereby preventing the spinous process 4 from sliding out of the first movable groove 53 and the second movable groove 54. At the same time, the two ends of the spinous process 4 have a range of movement, which can better prevent the spinous process 4 from breaking when the balloon 1 is expanded too much. In addition, after the spinous process 4 recovers its deformation, the deflection of the spinous process 4 is effectively limited, so that the spinous process 4 can better restore its original position and state, preventing the spinous process 4 from getting stuck during the withdrawal of the balloon 1 catheter.

[0044] A boss 6 is provided on the outer surface of the spinous process filament 4 facing away from the balloon 1, and the boss 6 is provided along the length direction of the spinous process filament 4. The corners of the boss 6 are provided in arc shape, and the two ends of the boss 6 and the spinous process filament 4 form step surfaces. The provision of the boss 6 enables the plaque to be better cut through and passed through when passing through the plaque-like lesions in the blood vessels due to the step surface formed between the boss 6 and the spinous process filament 4. At the same time, when the balloon 1 reaches the lesion, the contrast agent is rushed into it to expand and open the opening, so that it can be better embedded in the plaque to anchor the balloon 1. In addition, the corners on the boss 6 are provided in arc shape, thereby preventing the outer periphery of the spinous process filament 4 from being too sharp and damaging the blood vessels.

[0045] Specifically, the cross section of the spinous process wire 4 is set to be triangular, rhombus, rectangular or circular, and the cross section of the boss 6 is set to be triangular. The spinous process wire 4 is made of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyamide, nylon or PEBAX material.

[0046] The extended end is provided with a developing member 7, which is provided on the extended section 31. The development member 7 can improve the developing property of the balloon 1 under X-ray fluoroscopy, thereby helping doctors understand the precise position of the balloon 1, and facilitating doctors to locate and perform medical operations. The developing member 7 includes a first developing ring 71 and a second developing ring 72, which are sleeved on the extended section 31 and are evenly arranged on the extended section 31.

[0047] The end of the outer tube 2 facing away from the extension section 31 is connected with a proximal hypotube 8, which extends into the outer tube 2 and slides inside the outer tube 2, and the inner tube 3 extends into the proximal hypotube 8 and slides inside the proximal hypotube 8. The end of the proximal hypotube 8 facing away from the outer tube 2 is provided with a distal hypotube 9, and the distal hypotube 9 extends into the outer tube 2 toward the end of the proximal hypotube 8 and is connected to the proximal hypotube 8. The proximal hypotube 8 and the distal hypotube 9 are both arranged along the length direction of the outer tube 2, and the proximal hypotube 8 and the distal hypotube 9 are both slidably arranged inside the outer tube 2. Since the hypotube has the highest strength in the balloon 1 dilation catheter, it can effectively transmit force and torque to the distal end, and the inner tube 3 is flexible, so that the inner tube 3 can be pulled better.

[0048] A balloon catheter seat 10 is provided at the end of the distal hypotube 9 facing away from the balloon 1, a balloon catheter sheath 11 is provided between the balloon catheter seat 10 and the distal hypotube 9, and the end of the distal hypotube 9 facing away from the proximal hypotube 8 extends out of the balloon catheter seat 10 and is connected to the balloon catheter seat 10.

[0049] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A spinous process balloon dilatation catheter, characterized in that: The invention comprises a balloon (1), an outer tube (2), and an inner tube (3) coaxially slidably arranged inside the outer tube (2), one end of the inner tube (3) extending from the outer tube (2) to form an extended section (31), the balloon (1) being arranged on the extended section (31) of the inner tube (3), the extended section (31) penetrating into the balloon (1) and one end of the extended section (31) facing away from the outer tube (2) being connected to one end of the balloon (1), the other end of the balloon (1) being connected to the outer tube (2), the balloon (1) being arranged at A plurality of spinous process wires (4) are provided, the plurality of spinous process wires (4) wrapping the balloon (1), a control member (5) is provided between the spinous process wires (4) and the balloon (1), both ends of the spinous process wires (4) are inserted into the control member (5) and slide on the control member (5) along the length direction of the outer tube (2), and the spinous process wires (4) are made of a material having deformation characteristics; a developing member (7) is provided on the extending section (31), and the developing member (7) is sleeved on the extending section (31); The control member (5) comprises a distal sleeve (51) arranged on the end of the extended section (31) facing away from the outer tube (2), the spinous process wire (4) being arranged in the distal sleeve (51), a proximal sleeve (52) being arranged at the connection between the balloon (1) and the outer tube (2), a plurality of first movable grooves (53) being formed on the proximal sleeve (52), one end of the spinous process wire (4) extending into the first movable groove (53) and sliding in the first movable groove (53); A second movable groove (54) is formed in the distal sleeve (51) at one end facing the spinous process wire (4), and the spinous process wire (4) at one end facing the second movable groove (54) extends into the second movable groove (54) and slides in the second movable groove (54); The cross-sections of the first movable groove (53) and the second movable groove (54) decrease from the groove bottom to the groove opening, and the two ends of the spinous process wire (4) match the first movable groove (53) and the second movable groove (54). When the end of the spinous process wire (4) slides to the groove opening position in the first movable groove (53) and the second movable groove (54), the side walls of the two ends of the spinous process wire (4) are respectively pressed against the side walls of the first movable groove (53) and the second movable groove (54).

2. The spinous process balloon dilatation catheter according to claim 1, characterized in that: A boss (6) is arranged on the outer surface of the spinous process wire (4) facing away from the balloon (1); the boss (6) is arranged along the length direction of the spinous process wire (4); the corners of the boss (6) are arranged in arc shape; and the two ends of the boss (6) and the spinous process wire (4) form step surfaces.

3. The spinous process balloon dilatation catheter according to claim 2, characterized in that: The cross-section of the spinous process filament (4) is arranged to be triangular, rhombus-shaped, rectangular or circular, and the cross-section of the boss (6) is arranged to be triangular.

4. The spinous process balloon dilatation catheter according to claim 1, characterized in that: The spinous process wire (4) is made of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyamide, nylon or PEBAX material.

5. The spinous process balloon dilatation catheter according to any one of claims 1 to 4, characterized in that: A proximal hypotube (8) is connected to one end of the outer tube (2) that is facing away from the extended section (31); the proximal hypotube (8) extends into the outer tube (2) and slides in the outer tube (2); the inner tube (3) extends into the proximal hypotube (8) and slides in the proximal hypotube (8); and a distal hypotube (9) is provided at one end of the proximal hypotube (8) that is facing away from the outer tube (2).

6. The spinous process balloon dilatation catheter according to claim 5, characterized in that: A balloon catheter seat (10) is arranged at the end of the distal hypotube (9) facing away from the balloon (1), a balloon catheter sheath (11) is arranged between the balloon catheter seat (10) and the distal hypotube (9), and an end of the distal hypotube (9) facing away from the proximal hypotube (8) extends out of the balloon catheter seat (10) and is connected to the balloon catheter seat (10).

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