Artery blood vessel stent system

Abstract

The invention discloses an artery blood vessel stent system which comprises an inner tube, a fixing column is fixedly installed on the outer wall of the inner tube, a fixing ring is fixedly installed at one end of the fixing column, an outer tube is movably arranged at one end of the fixing ring, a blood vessel stent is arranged on the inner wall of the outer tube, and a balloon catheter is movably arranged on the outer wall of the inner tube. A balloon is fixedly connected to the outer wall of the balloon catheter in a sleeving mode, 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, an installation base and a connecting shell are fixedly installed on the outer wall of the inner tube, and a restraining block is rotationally installed on one side of the installation base; and one side of the restraining block is connected with a folding bag, the folding bag is located between the mounting base and the connecting shell, the bottom of one side of the folding bag is provided with a molding wire in a bonding mode, one side of the molding wire makes contact with the side wall of the connecting shell, and the problem that the current practicability is poor is solved through the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of vascular stents, and particularly relates to an arterial vascular stent system. Background Art

[0002] Most ischemia in clinical practice is mainly due to vascular stenosis (plaques). When the stenosis degree is greater than 70%, stent implantation is often considered. The conventional operation is to first expand the stenosis site with a balloon, and then place a stent for blood flow reconstruction. The treatment process is as follows: First, digital subtraction angiography (DSA) is performed to determine the lesion stenosis. An embolization filter is released at the distal end of the lesion. This device is mesh-shaped and can capture fine plaques to prevent the ruptured plaques from flowing to the distal end of the blood vessel and causing blockage of other blood vessel parts. A balloon is placed at the stenosis for dilation. After the balloon dilation is completed, the balloon is withdrawn, and a stent is placed at the stenosis. Most lesions cannot be fully expanded by the stent, and the stent needs to be expanded again with a balloon to achieve a better wall attachment effect.

[0003] In the above operation process, different instruments are used in sequence, and the instruments need to enter and exit the blood vessel multiple times, which is likely to cause damage to the blood vessel, and the operation time is relatively long. The medical staff is exposed to X-rays for a long time, and the practicability is poor. This phenomenon has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of the present invention is to provide an arterial vascular stent system for the existing skidding device to solve the problems mentioned in the above background art.

[0005] To solve the above technical problems, the present invention provides the following technical solution: An arterial vascular stent system includes an inner tube. A fixed column is fixedly installed on the outer wall of the inner tube. One end of the fixed column is fixedly installed with a fixed ring. One end of the fixed ring is movably provided with an outer tube. A vascular 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 also fixedly installed on the outer wall of the inner tube. An embolization filter is connected to one side of the filter fixing plate.

[0006] The present invention further explains that an installation seat and a connection shell are fixedly installed on the outer wall of the inner tube. A restraint block is rotatably installed on one side of the installation seat. A folding bladder is connected to one side of the restraint block. The folding bladder is located between the installation seat and the connection shell. One side bottom of the folding bladder is adhesively provided with a shaping wire. One side of the shaping wire is in contact with the side wall of the connection shell. A male clamping block is fixedly installed on the top of the shaping wire. The bottom of the male clamping block extends above the folding bladder, and the bottom of the male clamping block is in contact with the top of the folding bladder. A liquid injection port one is opened on the outer wall of the inner tube. An opening is arranged on one side of the folding bladder, and the opening is communicated with the liquid injection port one.

[0007] The present invention further illustrates that a wire winding disc is rotatably installed inside the connecting shell, several rotating supports are installed on the inner wall of the inner tube in a circumferential distribution, one end of each rotating support is rotatably provided with a control guide wire, one end of the control guide wire is fixed to the middle of the wire winding disc, several storage wires are wound around the outer wall of the wire winding disc, one end of each storage wire movably passes through the side wall of the connecting shell, and one end of the storage wire is connected to a male clamping block. Several female clamping blocks are installed on the inner wall of the embolization filter, and the female clamping blocks and the male clamping blocks are engaged with each other.

[0008] The present invention further illustrates that an external thread is provided on the outer wall of the inner tube, an internal thread is provided on the inner wall of the balloon catheter, and the external thread and the internal thread are screwed together. An elastic limiting block is installed at one end of the balloon catheter. 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 correspondingly provided on the outer wall of the outer tube. One side of the connecting block is connected with an elastic pulling wire. One end of the elastic pulling 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 pulling wire is in contact with the roller frame.

[0010] The present invention further illustrates that a third liquid injection port is provided on the outer wall of the inner tube. A liquid inlet hole is provided on the side wall of the balloon catheter. The liquid inlet hole communicates with the inside of the balloon. The third liquid injection port and the liquid inlet hole communicate with each other.

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

[0012] The present invention further illustrates that arc-shaped magnetic blocks are correspondingly installed on the outer wall of the control guide wire. Arc-shaped magnetic strips are correspondingly embedded in the inner wall of the balloon catheter, and the arc-shaped magnetic blocks and the arc-shaped magnetic strips are magnetically attracted to each other.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, as a whole, the system enters the lesion site. The release and recovery of the embolization filter and the release of the stent are controlled through the control guide wire, and the inflation of the balloon is controlled through the liquid injection port. The whole process does not require instrument exchange, and the operation time is short. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2It is a schematic diagram of the installation of the folding capsule of the present invention; Figure 3 It is a schematic diagram of the installation of the embolization filter and the shaping wire of the present invention; Figure 4 It is a schematic diagram of the internal structure of the connection shell of the present invention; Figure 5 It is a schematic diagram of the installation of the outer tube and the vascular stent of the present invention; Figure 6 It is a schematic diagram of the installation of the arc-shaped magnetic strip and the arc-shaped magnetic block of the present invention; Figure 7 It is a schematic diagram of the installation of the balloon of the present invention; In the figure: 1, inner tube; 2, fixing ring; 3, balloon; 4, vascular stent; 5, embolization filter; 11, control guide wire; 12, rotating support; 13, injection port 1; 14, limiting groove; 15, injection port 2; 16, injection port 3; 17, movable retaining ring; 21, outer tube; 22, connecting block; 23, fixing column; 24, elastic pulling wire; 31, balloon catheter; 311, elastic limiting block; 32, liquid inlet hole; 51, filter fixing plate; 52, folding capsule; 521, restraining block; 522, mounting seat; 53, shaping wire; 531, male clamping block; 54, connection shell; 55, storage wire; 56, female clamping block; 57, wire winding disc; 61, arc-shaped magnetic strip; 62, arc-shaped magnetic block; 99, roller frame. Specific embodiments

[0015] The technical solution of the present invention will be further described in detail below in conjunction with the preferred embodiments and their accompanying drawings in a non-limiting manner. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the scope of protection of the present invention.

[0016] Please refer to Figures 1-7, the present invention provides a technical solution: an arterial vascular stent system, comprising an inner tube 1, a fixing column 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 column 23, an outer tube 21 is movably arranged at one end of the fixing ring 2, a vascular stent 4 is arranged on the inner wall of the outer tube 21, a balloon catheter 31 is movably arranged 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 embolism filter 5 is connected to one side of the filter fixing plate 51, the fixing ring 2 is made of platinum-iridium alloy and has a radiographic function under X-rays, the embolism filter 5 is woven into a mesh shape by nitinol alloy, the pore diameter is 30-50 microns, a radiographic point is installed at one end, 6-8 radiographic points are installed at both ends of the vascular stent 4, which is made of nitinol alloy and is formed by laser engraving. It has been heat-set in the early stage to form a hollow tubular structure and has a shape memory function. It will expand and release when not externally squeezed. The material of the balloon 3 is generally a polymer material such as nylon and Pebax, and radiographic points are provided 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, and the vascular stent 4 is squeezed by the outer tube 21 to be received inside. When the outer tube 21 is translated, the vascular stent 4 will expand. The balloon catheter 31 is used to provide an 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 expand the embolism at the stenotic position of the blood vessel and enter the inside of the vascular stent 4 after moving to further expand the vascular stent 4. The vascular stent 4 is used to expand the blood vessel to prevent rebound and restenosis. The embolism filter 5 is used to recover any embolism that falls off during the expansion process into the embolism filter 5 to perform a filtering function; On the outer wall of the inner tube 1, a mounting seat 522 and a connecting shell 54 are fixedly installed. On one side of the mounting seat 522, a restraint block 521 is rotatably installed. On one side of the restraint block 521, a folding bladder 52 is connected. The folding bladder 52 is located between the mounting seat 522 and the connecting shell 54. On the bottom of one side of the folding bladder 52, a shaping wire 53 is adhesively provided. One side of the shaping wire 53 is in contact with the side wall of the connecting shell 54. At the top of the shaping wire 53, a male clamping block 531 is fixedly installed. The bottom of the male clamping block 531 extends above the folding bladder 52, and the bottom of the male clamping block 531 is in contact with the top of the folding bladder 52. On the outer wall of the inner tube 1, a first liquid injection port 13 is provided. On one side of the folding bladder 52, there is an opening, and the opening communicates with the first liquid injection port 13. When the folding bladder 52 is filled with liquid, it unfolds. Since the restraint block 521 restricts one side from unfolding, the folding bladder 52 will unfold obliquely when filled with liquid, causing the embolism filter 5 to be squeezed by the outer wall of the folding bladder 52 and also unfold obliquely. Compared with applying a force at one end, this method has a uniform force. The embolism filter 5 is in the shape of a net pocket with one side smaller and the other side larger. During the process of the folding bladder 52 unfolding when filled with liquid, one end of it will lift the male clamping block 531 upward, thereby driving the shaping wire 53 to unfold upward. The shaping wire 53 is used to shape the embolism filter 5 to prevent it from rebounding after unfolding. After the liquid in the folding bladder 52 is discharged, it will contract, but the shape of the shaping wire 53 remains unchanged, preventing the folding bladder 52 from expanding and blocking the embolus, and improving the blood flow in the blood vessel; Inside the connecting shell 54, a wire winding disc 57 is rotatably installed. On the inner wall of the inner tube 1, a number of rotating supports 12 are installed in a circumferential distribution. At one end of the rotating support 12, a control guide wire 11 is rotatably provided. One end of the control guide wire 11 is fixed to the middle of the wire winding disc 57. A number of storage wires 55 are wound around the outer wall of the wire winding disc 57. One end of the storage wire 55 movably passes through the side wall of the connecting shell 54, and one end of the storage wire 55 is connected to the male clamping block 531. A number of female clamping blocks 56 are installed on the inner wall of the embolism filter 5, and the female clamping blocks 56 are engaged with the male clamping blocks 531. When the shaping wire 53 unfolds, the male clamping block 531 at its top will be engaged with the female clamping blocks 56 connected to the embolism filter 5 to be fixed. First, the control guide wire 11 will be coiled on the wire winding disc 57. As the shaping wire 53 unfolds, one end of the control guide wire 11 will be pulled outwards. After the shaping wire 53 is completely unfolded, the control guide wire 11 will be completely unfolded from the wire winding disc 57. When it is necessary to control the retraction of the embolism filter 5, rotating the wire winding disc 57 can cause the control guide wire 11 to be re-wound around the outer wall of the wire winding disc 57. As the number of rotation turns increases, the male clamping block 531 will be gradually pulled downwards, causing the shaping wire 53 to return to the folded state again. When the control guide wire 11 rotates, it will cause the wire winding disc 57 at one end of it to rotate, thereby retracting the embolism filter 5 by controlling the rotation of the wire winding disc 57; The outer wall of the inner tube 1 is provided with an external thread, and the inner wall of the balloon catheter 31 is provided with an internal thread, and the external thread and the internal thread are screwed together. One end of the balloon catheter 31 is installed with an elastic limit block 311. The outer wall of the inner tube 1 is provided with a limit groove 14, and the elastic limit block 311 and the limit groove 14 are engaged with each other. When the balloon catheter 31 rotates, due to its threaded connection with 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 at the left end, the elastic limit block 311 at one end thereof will be stuck inside the limit groove 14, thereby restricting the position of the balloon catheter 31 and preventing it from sliding randomly; A connection block 22 is correspondingly arranged on the outer wall of the outer tube 21. One side of the connection block 22 is connected with an elastic pulling wire 24. One end of the elastic pulling 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 pulling wire 24 is in contact with the roller frame 99. When the balloon catheter 31 slides linearly, it will drive one end of the elastic pulling wire 24 to move, so that the connection block 22 connected to the other end of the elastic pulling wire 24 moves to the right, causing the outer tube 21 to be separated from the fixing ring 2, so that the vascular stent 4 can be successfully deployed. Due to the elastic deformation of the elastic pulling wire 24, it will not affect the deployment of the balloon 3 when the balloon 3 is deployed; The outer wall of the inner tube 1 is provided with a third liquid injection port 16. A liquid inlet hole 32 is provided on the side wall of the balloon catheter 31. The liquid inlet hole 32 communicates with the inside of the balloon 3. The third liquid injection port 16 and the liquid inlet hole 32 communicate with each other. Since the liquid inlet hole 32 and the third liquid injection port 16 are in communication, when the inner tube 1 is filled with liquid, the liquid will enter the inside of the balloon 3 through the communication position of the two, so that the balloon 3 can be deployed. When the balloon catheter 31 moves to other axial positions, since the liquid inlet hole 32 and the third liquid injection port 16 are staggered from each other, the liquid in the third liquid injection port 16 will be blocked by the inner wall of the balloon catheter 31 to prevent liquid leakage; The outer wall of the inner tube 1 is further provided with a second liquid injection port 15. An activity retaining ring 17 is slidably sleeved on the outer wall of the inner tube 1. The activity retaining ring 17 covers the second liquid injection port 15. Generally, the second liquid injection port 15 will be blocked by the activity retaining ring 17 and will not leak when the inner tube 1 is filled with liquid. After the balloon catheter 31 moves to a suitable position, it will push the activity retaining ring 17 away, and when the balloon catheter 31 moves to the extreme position at the leftmost end, the liquid inlet hole 32 and the second liquid injection port 15 are aligned with each other, so that when the balloon 3 moves into the vascular stent 4, it can be filled with liquid and deployed to expand the vascular stent 4 outward; An arc-shaped magnetic block 62 is correspondingly installed on the outer wall of the control guide wire 11, and an arc-shaped magnetic strip 61 is correspondingly embedded on the inner wall of the balloon catheter 31, and the arc-shaped magnetic block 62 and the arc-shaped magnetic strip 61 are magnetically attracted to each other. When the control guide wire 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 follow the rotation, thereby driving the balloon catheter 31 to rotate, so that the position of the balloon catheter 31 is controlled by rotating the control guide wire 11. The axial length of the arc-shaped magnetic strip 61 is much larger than the axial length of the arc-shaped magnetic block 62, so that when the balloon catheter 31 moves to any axial position, it can still be driven to move by magnetic attraction.

[0017] Working process: first, the entire stent system is placed into the patient's blood vessel, and the balloon 3 is aligned with the patient's vascular embolism and stenosis. At this time, liquid is passed into the inner tube 1, and the folded balloon 52 and the balloon 3 will expand due to the pressure of the liquid. The embolic filter 5 expands and filters the detached emboli. The balloon 3 expands and initially expands the vascular stenosis. After expansion, the liquid in the inner tube 1 is sucked out, the folded balloon 52 is folded, the balloon 3 is folded, and the inner tube 1 is pulled to align the outer tube 21 with the vascular stenosis. At this time, the control guide wire 11 is rotated clockwise, the embolic filter 5 is folded, and the arc-shaped magnetic block 62 drives the balloon catheter 31 to rotate and adjust its axial position through magnetic force, so that the balloon 3 enters under the vascular stent 4 and And it is fixed by the limiting groove 14, so that the axial position of the balloon 3 is fixed. With the axial movement of the balloon 3, the elastic pulling wire 24 will drive the outer tube 21 to move and detach from the vascular stent 4. 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 embolic filter 5 is re-expanded, and the balloon 3 no longer moves. Then liquid is introduced into the inner tube 1 so that the liquid fills the balloon 3. The expansion of the balloon 3 will make the vascular stent 4 unfold more fully. Finally, the liquid is sucked out, the balloon 3 is retracted, and the control guide wire 11 is rotated clockwise to retract the embolic filter 5. Then the inner tube 1 is pulled out, and only the vascular stent 4 remains in the patient's blood vessel, and all other components are retracted.

[0018] The system enters the lesion site as a whole, releases and recovers the embolic filter and releases the stent by controlling the guidewire, and controls the filling of the balloon through the injection port. The entire process does not require instrument exchange and the operation time is short.

[0019] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements 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 stent system, comprising an inner tube (1), characterized in that: A fixing column (23) is fixedly mounted on the outer wall of the inner tube (1); a fixing ring (2) is fixedly mounted on one end of the fixing column (23); an outer tube (21) is movably mounted on one end of the fixing ring (2); a blood vessel stent (4) is mounted on the inner wall of the outer tube (21); a balloon catheter (31) is movably mounted 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 mounted on the outer wall of the inner tube (1); an embolic filter (5) is connected to one side of the filter fixing plate (51).

2. An arterial stent system according to claim 1, characterized in that: The outer wall of the inner tube (1) is fixedly mounted with a mounting seat (522) and a connecting shell (54); a restraining block (521) is rotatably mounted on one side of the mounting seat (522); a folding capsule (52) is connected to one side of the restraining block (521); the folding capsule (52) is located between the mounting seat (522) and the connecting shell (54); a molding thread (53) is provided on the bottom of one side of the folding capsule (52) by bonding; one side of the molding thread (53) is in contact with the side wall of the connecting shell (54); a male clamping block (531) is fixedly mounted on the top of the molding thread (53); the bottom of the male clamping block (531) extends to the top of the folding capsule (52); and the bottom of the male clamping block (531) is in contact with the top of the folding capsule (52); a liquid injection port (13) is provided on the outer wall of the inner tube (1); an opening is provided on one side of the folding capsule (52); and the opening and the liquid injection port (13) are mutually connected.

3. An arterial stent system according to claim 2, characterized in that: A winding drum (57) is rotatably mounted inside the connecting shell (54), a plurality of rotating supports (12) are circumferentially mounted on the inner wall of the inner tube (1), a control guide wire (11) is rotatably mounted on one end of the rotating support (12), one end of the control guide wire (11) is fixed to the middle of the winding drum (57), a plurality of storage wires (55) are wound around the outer wall of the winding drum (57), one end of the storage wire (55) movably passes through the side wall of the connecting shell (54), and one end of the storage wire (55) is connected to a male clamping block (531), and a plurality of female clamping blocks (56) are mounted on the inner wall of the embolic filter (5), and the female clamping block (56) and the male clamping block (531) are engaged with each other.

4. The arterial stent system according to claim 3, characterized in that: The outer wall of the inner tube (1) is provided with an external thread, the inner wall of the balloon catheter (31) is provided with an internal thread, and the external thread and the internal thread are screwed together, one end of the balloon catheter (31) is installed with an elastic limit block (311), the outer wall of the inner tube (1) is provided with a limit groove (14), and the elastic limit block (311) and the limit groove (14) are mutually engaged.

5. The arterial stent system according to claim 4, characterized in that: A connecting block (22) is correspondingly arranged on the outer wall of the outer tube (21), one side of the connecting block (22) is connected to an elastic pulling wire (24), one end of the elastic pulling wire (24) is connected to the outer wall of the balloon catheter (31), and a roller frame (99) is installed on the outer wall of the inner tube (1), and the elastic pulling wire (24) is in contact with the roller frame (99).

6. The arterial stent system according to claim 5, characterized in that: The outer wall of the inner tube (1) is provided with a third injection port (16), and the side wall of the balloon catheter (31) is provided with a liquid inlet hole (32), the liquid inlet hole (32) is connected to the interior of the balloon (3), and the third injection port (16) and the liquid inlet hole (32) are connected to each other.

7. An arterial stent system according to claim 6, characterized in that: The outer wall of the inner tube (1) is also provided with a second liquid 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 upper part of the second liquid injection port (15).

8. An arterial stent system according to claim 7, characterized in that: An arc-shaped magnetic block (62) is correspondingly mounted on the outer wall of the control guide wire (11), and an arc-shaped magnetic strip (61) is correspondingly embedded in the inner wall of the balloon catheter (31), and the arc-shaped magnetic block (62) and the arc-shaped magnetic strip (61) are magnetically attracted to each other.

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