An arterial vascular stent system

Abstract

The application discloses an arterial blood vessel stent system, which comprises an inner tube, a fixed column is fixedly installed on the outer wall of the inner tube, a fixed ring is fixedly installed on one end of the fixed column, an outer tube is movably arranged at one end of the fixed ring, a blood vessel stent is arranged on the inner wall of the outer tube, a balloon catheter is movably arranged on the outer wall of the inner tube, a balloon is fixedly sleeved on the outer wall of the balloon catheter, a filter fixing plate is further fixedly installed on the outer wall of the inner tube, an embolism filter is connected to one side of the filter fixing plate, a mounting seat and a connecting shell are fixedly installed on the outer wall of the inner tube, a constraint block is rotatably installed on one side of the mounting seat, a folding capsule is connected to one side of the constraint block, the folding capsule is located between the mounting seat and the connecting shell, a plastic wire is arranged on the bottom of one side of the folding capsule in a bonding mode, and one side of the plastic wire is in contact with the side wall of the connecting shell. The device solves the problem of poor practicability.

Description

Technical Field

[0001] This invention belongs to the field of vascular stent technology, and specifically relates to an arterial vascular stent system. Background Technology

[0002] In clinical practice, most ischemic attacks are primarily due to vascular stenosis (plaque). When the stenosis exceeds 70%, stent implantation is often considered. The standard procedure involves first balloon dilation at the stenosis site, followed by stent placement and blood flow restoration. The treatment process is as follows: Digital subtraction angiography (DSA) is performed to locate the stenosis. An embolic filter is deployed distal to the lesion. This mesh-like device captures small plaques, preventing ruptured plaques from flowing further into the vessel and causing blockages in other parts of the blood vessel. A balloon is placed at the stenosis site for dilation. After dilation, the balloon is withdrawn, and a stent is placed at the stenosis site. In most cases, the stent cannot be fully dilated by the balloon alone, requiring further balloon dilation to achieve better apposition to the vessel wall.

[0003] The above procedures require the use of different instruments in a specific sequence, with instruments needing to enter and exit the blood vessel multiple times, which can easily damage the vessel. Furthermore, the procedures are lengthy, and medical staff and patients are exposed to X-rays for extended periods, making the procedures impractical. This phenomenon has become a problem that urgently needs to be solved by those in the field. Summary of the Invention

[0004] The purpose of this invention is to provide an arterial vascular stent system for existing manure collection devices, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an arterial vascular stent system, comprising an inner tube, a fixing post fixedly installed on the outer wall of the inner tube, a fixing ring fixedly installed at one end of the fixing post, an outer tube movably disposed at one end of the fixing ring, a vascular stent disposed on the inner wall of the outer tube, a balloon catheter movably disposed on the outer wall of the inner tube, a balloon fixedly sleeved on the outer wall of the balloon catheter, and a filter fixing plate fixedly installed on the outer wall of the inner tube, with an embolization filter connected to one side of the filter fixing plate.

[0006] The present invention further describes that an installation base and a connecting shell are fixedly installed on the outer wall of the inner tube. A constraint block is rotatably installed on one side of the installation base, and a folded bladder is connected to one side of the constraint block. The folded bladder is located between the installation base and the connecting shell. A molding wire is bonded to the bottom of one side of the folded bladder. One side of the molding wire is in contact with the side wall of the connecting shell. A male clamping block is fixedly installed on the top of the molding wire. The bottom of the male clamping block extends to the top of the folded bladder, and the bottom of the male clamping block is in contact with the top of the folded bladder. An injection port is opened on the outer wall of the inner tube. An opening is provided on one side of the folded bladder, and the opening communicates with the injection port.

[0007] The present invention further describes that a winding disc is rotatably installed inside the connecting shell, and several rotating supports are circumferentially distributed on the inner wall of the inner tube. A control guide wire is rotatably provided at one end of the rotating support, and one end of the control guide wire is fixed to the middle of the winding disc. Several take-up wires are wound around the outer wall of the winding disc. One end of the take-up wires moves through the side wall of the connecting shell and is connected to the male locking block. Several female locking blocks are installed on the inner wall of the plug filter, and the female locking blocks and male locking blocks are engaged with each other.

[0008] The present invention further describes that the outer wall of the inner tube is provided with an external thread, the inner wall of the balloon catheter is provided with an internal thread, and the external thread and the internal thread are screwed together. An elastic limiting block is installed at one end of the balloon catheter, and a limiting groove is provided on the outer wall of the inner tube, and the elastic limiting block and the limiting groove are engaged with each other.

[0009] The present invention further illustrates that a connecting block is provided on the outer wall of the outer tube, and an elastic traction wire is connected to one side of the connecting block. One end of the elastic traction wire is connected to the outer wall of the balloon catheter. A roller frame is installed on the outer wall of the inner tube, and the elastic traction wire is in contact with the roller frame.

[0010] The present invention further illustrates that the outer wall of the inner tube is provided with a third injection port, and the side wall of the balloon catheter is provided with a liquid inlet hole. The liquid inlet hole communicates with the interior of the balloon, and the third injection port communicates with the liquid inlet hole.

[0011] The present invention further illustrates that the outer wall of the inner tube is provided with a second injection port, and a movable retaining ring is slidably sleeved on the outer wall of the inner tube, the movable retaining ring covering the second injection port.

[0012] The present invention further illustrates that an arc-shaped magnetic block is installed on the outer wall of the control guidewire, and an arc-shaped magnetic strip is embedded in the inner wall of the balloon catheter, and the arc-shaped magnetic block and the arc-shaped magnetic strip are magnetically attracted to each other.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention allows the system to enter the lesion site as a whole, control the release and retrieval of the embolization filter and the release of the stent by controlling the guidewire, and control the inflation of the balloon through the injection port. The entire process does not require instrument exchange and the operation time is short. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the folding pouch installation of the present invention;

[0017] Figure 3 This is a schematic diagram of the installation of the plug filter and the molding wire of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the connecting shell of the present invention;

[0019] Figure 5 This is a schematic diagram of the installation of the outer tube and vascular stent of the present invention;

[0020] Figure 6 This is a schematic diagram of the installation of the arc-shaped magnetic strip and arc-shaped magnetic block of the present invention;

[0021] Figure 7 This is a schematic diagram of the balloon installation of the present invention;

[0022] In the diagram: 1. Inner tube; 2. Fixing ring; 3. Balloon; 4. Vascular stent; 5. Embolization filter; 11. Control guidewire; 12. Rotating support; 13. Injection port one; 14. Limiting groove; 15. Injection port two; 16. Injection port three; 17. Movable retaining ring; 21. Outer tube; 22. Connecting block; 23. Fixing column; 24. Elastic traction wire; 31. Balloon catheter; 311. Elastic limiting block; 32. Inlet port; 51. Filter fixing plate; 52. Folded balloon; 521. Restraining block; 522. Mounting seat; 53. Molding wire; 531. Male clamping block; 54. Connecting shell; 55. Retractable wire; 56. Female clamping block; 57. Winding reel; 61. Arc-shaped magnetic strip; 62. Arc-shaped magnetic block; 99. Roller frame. Detailed Implementation

[0023] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-7This invention provides a technical solution: an arterial vascular stent system, comprising an inner tube 1, a fixing post 23 fixedly installed on the outer wall of the inner tube 1, a fixing ring 2 fixedly installed at one end of the fixing post 23, an outer tube 21 movably disposed at one end of the fixing ring 2, a vascular stent 4 disposed on the inner wall of the outer tube 21, a balloon catheter 31 movably disposed on the outer wall of the inner tube 1, a balloon 3 fixedly sleeved on the outer wall of the balloon catheter 31, a filter fixing plate 51 fixedly installed on the outer wall of the inner tube 1, an embolization filter 5 connected to one side of the filter fixing plate 51, the fixing ring 2 being made of platinum-iridium alloy and having imaging function under X-ray, the embolization filter 5 being made of nickel-titanium alloy woven into a mesh shape with a pore size of 30-50 micrometers, with imaging points installed at one end, and the vascular stent 4 having 6-8 imaging points installed at both ends, being made of nickel-titanium alloy, laser-engraved, and pre-heat-set to form a hollow tubular structure, and... With shape memory function, it will expand and release when not squeezed by external force. The balloon 3 is generally made of polymer materials such as nylon and Pebax, and has imaging points on both sides. When in use, the entire stent system is introduced into the blood vessel through the inner tube 1. The position of the outer tube 21 is restricted by the fixing ring 2. The outer tube 21 squeezes the vascular stent 4, making it housed inside. When the outer tube 21 is translated, the vascular stent 4 will expand. The balloon catheter 31 is used to provide the installation position for the balloon 3 and can drive the balloon 3 to move on the inner tube 1. The balloon 3 is used to initially open the embolism at the narrow position of the blood vessel, and after moving, it enters the vascular stent 4 to further open the vascular stent 4. The vascular stent 4 is used to open the blood vessel and prevent rebound and re-narrowing. The embolism filter 5 is used to collect any emboli that fall out during the expansion process, and plays a filtering role.

[0025] An mounting base 522 and a connecting shell 54 are fixedly installed on the outer wall of the inner tube 1. A constraint block 521 is rotatably mounted on one side of the mounting base 522. A folding bladder 52 is connected to one side of the constraint block 521. The folding bladder 52 is located between the mounting base 522 and the connecting shell 54. A molding wire 53 is bonded to the bottom of one side of the folding bladder 52. One side of the molding wire 53 contacts the side wall of the connecting shell 54. A male locking block 531 is fixedly installed on the top of the molding wire 53. The bottom of the male locking block 531 extends to the top of the folding bladder 52, and the bottom of the male locking block 531 contacts the top of the folding bladder 52. An injection port 13 is opened on the outer wall of the inner tube 1. An opening is provided on one side of the folding bladder 52, and the opening communicates with the injection port 13. When the pleated sac 52 is filled with liquid, it expands. Because the constraint block 521 restricts one side of the pleated sac from expanding, the pleated sac 52 expands obliquely when filled with liquid. This causes the embolization filter 5 to be squeezed by the outer wall of the pleated sac 52 and also expand obliquely. Compared with applying force to one end, this method distributes the force evenly. The embolization filter 5 is a net-like shape with one side smaller than the other. During the expansion of the pleated sac 52, one end will lift the male clamp block 531 upward, thereby driving the shaping wire 53 to expand upward. The shaping wire 53 is used to shape the embolization filter 5 and prevent it from rebounding after expansion. After the liquid in the pleated sac 52 is discharged, it will contract, but the shape of the shaping wire 53 remains unchanged, preventing the pleated sac 52 from expanding and blocking the embolus, and improving the blood flow.

[0026] Inside the connecting shell 54, a winding disc 57 is rotatably mounted. Several rotating supports 12 are circumferentially distributed on the inner wall of the inner tube 1. A control guide wire 11 is rotatably mounted at one end of each rotating support 12. One end of the control guide wire 11 is fixed to the center of the winding disc 57. Several take-up wires 55 are wound around the outer wall of the winding disc 57. One end of each take-up wire 55 movably passes through the side wall of the connecting shell 54 and is connected to a male locking block 531. Several female locking blocks 56 are installed on the inner wall of the plug filter 5, and the female locking blocks 56 and male locking blocks 531 engage with each other. When the molding wire 53 unfolds, the male locking block 531 at its top engages with the female locking block connected to the plug filter 5. The locking blocks 56 are interlocked to fix the control wire 11. First, the control wire 11 is coiled on the winding reel 57. As the shaping wire 53 unfolds, one end of the control wire 11 is pulled outward. After the shaping wire 53 is fully unfolded, the control wire 11 will be fully unfolded from the winding reel 57. When the control plug filter 5 needs to be retracted, the winding reel 57 is rotated to make the control wire 11 rewound around the outer wall of the winding reel 57. As the number of rotations increases, the male locking block 531 is gradually pulled downward, so that the shaping wire 53 returns to the folded state. When the control wire 11 rotates, the winding reel 57 at one end rotates, thereby retracting the plug filter 5 by controlling the rotation of the winding reel 57.

[0027] The outer wall of the inner tube 1 is provided with external threads, and the inner wall of the balloon catheter 31 is provided with internal threads. The external threads and internal threads are screwed together. One end of the balloon catheter 31 is equipped with an elastic limiting block 311. The outer wall of the inner tube 1 is provided with a limiting groove 14, and the elastic limiting block 311 and the limiting groove 14 are engaged with each other. When the balloon catheter 31 rotates, because it is threadedly connected to the inner tube 1, the rotation will cause the balloon catheter 31 to slide linearly along the outer wall of the inner tube 1. When the balloon catheter 31 slides to the extreme position of the left end, the elastic limiting block 311 at one end will be locked inside the limiting groove 14, thereby restricting the position of the balloon catheter 31 and preventing it from sliding at will.

[0028] A connecting block 22 is provided on the outer wall of the outer tube 21. An elastic traction wire 24 is connected to one side of the connecting block 22. One end of the elastic traction wire 24 is connected to the outer wall of the balloon catheter 31. A roller frame 99 is installed on the outer wall of the inner tube 1, and the elastic traction wire 24 is in contact with the roller frame 99. When the balloon catheter 31 slides in a straight line, it will drive one end of the elastic traction wire 24 to move, thereby causing the connecting block 22 connected to the other end of the elastic traction wire 24 to move to the right, so that the outer tube 21 and the fixing ring 2 are separated from each other, so that the vascular stent 4 can be deployed smoothly. Due to the elastic deformation of the elastic traction wire 24, it will not affect the deployment of the balloon 3 when it is deployed.

[0029] The inner tube 1 has an injection port 36 on its outer wall and an inlet hole 32 on its side wall. The inlet hole 32 is connected to the inside of the balloon 3. The injection port 36 is connected to the inlet hole 32. When the inner tube 1 is filled with liquid, the liquid will enter the inside of the balloon 3 through the connection between the two, so that the balloon 3 can be deployed. When the balloon catheter 31 moves to other axial positions, the liquid in the injection port 36 will be blocked by the inner wall of the balloon catheter 31 because the inlet hole 32 and the injection port 36 are staggered, thus preventing the liquid from leaking.

[0030] The outer wall of the inner tube 1 is also provided with a second injection port 15. A movable retaining ring 17 is slidably sleeved on the outer wall of the inner tube 1. The movable retaining ring 17 covers the second injection port 15. Under normal circumstances, the second injection port 15 will be blocked by the movable retaining ring 17. When the inner tube 1 is filled with liquid, there will be no leakage. After the balloon catheter 31 moves to the appropriate position, it will push the movable retaining ring 17 open. When the balloon catheter 31 moves to the leftmost extreme position, the inlet hole 32 and the second injection port 15 are aligned with each other. Thus, after the balloon 3 moves into the vascular stent 4, it can be filled with liquid and expand outward to expand the vascular stent 4.

[0031] An arc-shaped magnetic block 62 is installed on the outer wall of the control guidewire 11, and an arc-shaped magnetic strip 61 is embedded in the inner wall of the balloon catheter 31. The arc-shaped magnetic block 62 and the arc-shaped magnetic strip 61 are magnetically attracted to each other. When the control guidewire 11 is rotated, the arc-shaped magnetic block 62 will also move in a circular motion. Due to the magnetic attraction, the arc-shaped magnetic block 62 will rotate, thereby driving the balloon catheter 31 to rotate. Thus, the position of the balloon catheter 31 can be controlled by rotating the control guidewire 11. The axial length of the arc-shaped magnetic strip 61 is much greater than the axial length of the arc-shaped magnetic block 62, so that the balloon catheter 31 can still be moved by magnetic attraction when it moves to any axial position.

[0032] Working process: First, the entire stent system is placed into the patient's blood vessel, aligning balloon 3 with the thrombosed area. Fluid is then introduced into the inner tube 1. The pleated balloon 52 and balloon 3 expand due to the fluid pressure. The embolization filter 5 deploys and filters out any dislodged emboli. Balloon 3 expands and initially dilates the thrombus. After dilation, the fluid in the inner tube 1 is aspirated, the pleated balloon 52 retracts, and balloon 3 retracts. The inner tube 1 is then withdrawn, aligning the outer tube 21 with the thrombus. The guidewire 11 is then rotated clockwise, retracting the embolization filter 5. The arc-shaped magnetic block 62 uses magnetic force to rotate the balloon catheter 31 and adjust its axial position, allowing balloon 3 to enter below the vascular stent 4. The balloon 3 is fixed by the limiting groove 14, which fixes the axial position of the balloon 3. As the balloon 3 moves axially, the outer tube 21 moves and detaches from the vascular stent 4 through the elastic traction wire 24. The vascular stent 4 then returns to its original shape and unfolds to support the blood vessel. At this time, the control guide wire 11 is rotated counterclockwise, the embolization filter 5 unfolds again, and the balloon 3 stops moving. Then, liquid is introduced into the inner tube 1 to fill the balloon 3. The expansion of the balloon 3 will make the vascular stent 4 unfold more fully. Finally, the liquid is aspirated, the balloon 3 retracts, and the control guide wire 11 is rotated clockwise to retract the embolization filter 5. Then, the inner tube 1 is withdrawn, leaving only the vascular stent 4 in the patient's blood vessel, and all other components are retracted.

[0033] The system enters the lesion site as a whole, controls the release and retrieval of the embolization filter and the release of the stent by controlling the guidewire, and controls the inflation of the balloon through the injection port. The whole process does not require instrument exchange and the operation time is short.

[0034] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An arterial vascular stent system, comprising an inner tube (1), characterized in that: A fixing post (23) is fixedly installed on the outer wall of the inner tube (1). A fixing ring (2) is fixedly installed at one end of the fixing post (23). An outer tube (21) is movably installed at one end of the fixing ring (2). A vascular stent (4) is installed on the inner wall of the outer tube (21). A balloon catheter (31) is movably installed on the outer wall of the inner tube (1). A balloon (3) is fixedly sleeved on the outer wall of the balloon catheter (31). A filter fixing plate (51) is also fixedly installed on the outer wall of the inner tube (1). An embolization filter (5) is connected to one side of the filter fixing plate (51). The outer wall of the inner tube (1) is fixedly installed with a mounting base (522) and a connecting shell (54). A constraint block (521) is rotatably installed on one side of the mounting base (522). A folding bladder (52) is connected to one side of the constraint block (521). The folding bladder (52) is located between the mounting base (522) and the connecting shell (54). A molding wire (53) is bonded to the bottom of one side of the folding bladder (52). One side of the molding wire (53) is in contact with the side wall of the connecting shell (54). A male clamping block (531) is fixedly installed on the top of the molding wire (53). The bottom of the male clamping block (531) extends to the top of the folding bladder (52), and the bottom of the male clamping block (531) is in contact with the top of the folding bladder (52). An injection port (13) is opened on the outer wall of the inner tube (1). An opening is provided on one side of the folding bladder (52), and the opening is connected to the injection port (13). The connecting shell (54) is rotatably mounted with a winding disc (57). The inner wall of the inner tube (1) is circumferentially distributed with several rotating supports (12). One end of the rotating support (12) is rotatably provided with a control guide wire (11). One end of the control guide wire (11) is fixed to the middle of the winding disc (57). The outer wall of the winding disc (57) is wound with several take-up wires (55). One end of the take-up wire (55) moves through the side wall of the connecting shell (54) and is connected to the male clamping block (531). The inner wall of the plug filter (5) is equipped with several female clamping blocks (56), and the female clamping blocks (56) and the male clamping blocks (531) are engaged with each other. The outer wall of the inner tube (1) is provided with external threads, the inner wall of the balloon catheter (31) is provided with internal threads, and the external threads and internal threads are screwed together. One end of the balloon catheter (31) is equipped with an elastic limiting block (311), and the outer wall of the inner tube (1) is provided with a limiting groove (14), and the elastic limiting block (311) and the limiting groove (14) are engaged with each other. The outer wall of the outer tube (21) is provided with a connecting block (22), and an elastic traction wire (24) is connected to one side of the connecting block (22). One end of the elastic traction wire (24) is connected to the outer wall of the balloon catheter (31). The outer wall of the inner tube (1) is equipped with a roller frame (99), and the elastic traction wire (24) is in contact with the roller frame (99).

2. The arterial vascular stent system according to claim 1, characterized in that: The inner tube (1) has an injection port three (16) on its outer wall, and the balloon catheter (31) has an inlet hole (32) on its side wall. The inlet hole (32) is connected to the interior of the balloon (3), and the injection port three (16) is connected to the inlet hole (32).

3. The arterial vascular stent system according to claim 2, characterized in that: The outer wall of the inner tube (1) is also provided with a second injection port (15), and a movable retaining ring (17) is slidably sleeved on the outer wall of the inner tube (1), and the movable retaining ring (17) covers the second injection port (15).

4. An arterial vascular stent system according to claim 3, characterized in that: The outer wall of the control guidewire (11) is fitted with an arc-shaped magnetic block (62), and the inner wall of the balloon catheter (31) is fitted with an arc-shaped magnetic strip (61), and the arc-shaped magnetic block (62) and the arc-shaped magnetic strip (61) are magnetically attracted to each other.

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