Multi-lumen airway angiography guidewire catheter kit for delivery of Y-shaped airway stents

Abstract

The present invention relates to the field of medical devices, and specifically to a multi-lumen airway angiography guidewire catheter set for conveying a Y-shaped airway stent, comprising: a catheter, a first guidewire, a second guidewire, a first fixing piece, and a second fixing piece; the front end of the catheter is bent, and a main catheter cavity and a secondary catheter cavity that are independent of each other are opened in the catheter, the first guidewire is arranged in the main catheter cavity, the second guidewire is arranged in the secondary catheter cavity and extends out of the secondary catheter cavity to be bent, and the bending direction of the second guidewire is opposite to that of the catheter; the structures of the first fixing piece and the second fixing piece are the same. The catheter is used to pave the guide rail for the insertion of the first guidewire and the second guidewire, so that the two guidewires enter the two bronchi synchronously, and then the catheter is withdrawn from the two guidewires, and the first guidewire and the second guidewire of the withdrawn catheter are straightened by two fixing pieces to avoid entanglement with each other, so that the Y-shaped airway stent can be smoothly inserted into the two bronchi through the first guidewire and the second guidewire.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to a multi-lumen airway angiography guidewire catheter set for conveying a Y-shaped airway stent. Background Art

[0002] For various benign and malignant lesions that lead to stenosis or fistula in the airway carina area, the most effective treatment method is to use interventional radiology to insert an inverted Y-shaped airway stent. The catheter guidewire is used to insert a guidewire in each of the left and right bronchus in advance, and then the inverted Y-shaped airway stent is inserted along the guidewire. Currently, there are single-lumen angiography catheters on the market, and guidewires need to be inserted in the left and right bronchus in turn. This not only prolongs the operation time, but also the two guidewires are prone to entanglement, resulting in difficulty in stent placement or even failure. The operation is relatively complicated, which affects the widespread promotion and application of this technology.

[0003] In actual surgery, when doctors use a single-lumen airway angiography catheter to deliver a guidewire, the conventional operation is to deliver the guidewire twice, first into one bronchus and then into the other side. In this case, the guidewire often twists and entangles during delivery. When entanglement occurs, the doctor generally rotates the Y-type airway stent delivery device, straightens the guidewire by rotation, and then implants the Y-type airway stent. This process is complicated and cumbersome. During the operation, the patient's airway cannot inhale gas, and the doctor needs to complete the operation quickly to avoid the risk of suffocation. Therefore, if the guidewire cannot be straightened in a short time, it is easy to cause the Y-type airway stent to fail to release normally and cause implantation failure, thereby causing unnecessary pain to the patient during surgery and waste of the Y-type airway stent.

[0004] There are very few double-lumen airway angiography catheters on the market that can quickly enter the airway through the glottis and insert guide wires in the left and right bronchi respectively. However, when the guide wire turns from the same side and bends into the inside of the bronchus, it is guided and extended through the turning opening on the side of the catheter. The turning angle of the turning opening on the side of the catheter is too sharp and the bending length is too small, which may cause the guide wire to fail to pass smoothly or cause the guide wire to be broken. Summary of the invention

[0005] In order to solve the above problems, the object of the present invention is to provide a multi-lumen airway angiography guidewire catheter set for conveying a Y-shaped airway stent, which can smoothly insert a Y-shaped airway stent.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] The present invention provides a multi-lumen airway angiography guidewire catheter set for conveying a Y-shaped airway stent, comprising: a catheter, a first guidewire, a second guidewire, a first fixing piece, and a second fixing piece; the front end of the catheter is bent, and a main catheter lumen and a secondary catheter lumen independent of each other are opened in the catheter, the main catheter lumen passes through the bent front end and the rear end of the catheter, a secondary catheter lumen opening is opened on a side of the catheter bending part away from the bent front end of the catheter, the secondary catheter lumen passes through the secondary catheter lumen opening and the rear end of the catheter, the first guidewire is arranged in the main catheter lumen, the second guidewire is arranged in the secondary catheter lumen and extends out of the secondary catheter lumen opening for bending, and the bending direction of the second guidewire is opposite to the bending direction of the bent shape of the catheter;

[0008] The first fixing member and the second fixing member have the same structure and both include two-petal fixing blocks; one end of the two-petal fixing block is connected through an end head, and the two-petal fixing block can be opened and closed around the end head, and a buckle is provided at the other end of the two-petal fixing block. After the two-petal fixing block is closed, two grooves are formed on the adjacent inner walls for corresponding insertion of the first guide wire and the second guide wire.

[0009] Furthermore, after the two halves of the fixing block are closed, one-way cards are formed in the grooves, the two one-way cards in the first fixing piece face the second fixing piece, and the two one-way cards in the second fixing piece face the first fixing piece.

[0010] Furthermore, two semicircular grooves are provided on the opposite inner walls of the two halves of the fixing block, and half of a one-way card is arranged in each semicircular groove; when the two halves of the fixing block are closed, two complete circular grooves are formed, and a complete one-way card is formed in each circular groove.

[0011] Furthermore, the main catheter cavity is located on the catheter towards the curved side of the catheter, and the auxiliary catheter cavity is located on the catheter away from the curved side of the catheter.

[0012] Furthermore, the main catheter lumen is located on the side of the catheter facing away from the bend of the catheter, and the secondary catheter lumen is located on the side of the catheter facing the bend of the catheter; at the bend of the catheter, the main catheter lumen and the secondary catheter lumen are spirally wound around each other for half a circle; the guidewire catheter set also includes a branch catheter, which is arranged in the secondary catheter lumen and extends out of the secondary catheter lumen to be bent, the bending direction of the branch catheter is opposite to the bending direction of the bend of the catheter, and a second guidewire is arranged in the branch catheter.

[0013] Furthermore, a guide groove is provided on the portion of the branch catheter extending out of the secondary catheter cavity opening, and a guide strip is provided at the secondary catheter cavity opening; when the branch catheter extends out of the secondary catheter cavity opening, the guide strip is clamped in the guide groove to guide the extension of the branch catheter and limit the extension length of the branch catheter; marks are provided on the portion of the branch catheter extending out of the secondary catheter cavity opening, on the bent portion of the catheter and on the straight portion of the catheter.

[0014] Furthermore, a drug lumen is provided in the catheter which is independent of the main catheter lumen and the auxiliary catheter lumen, and a drug hole is provided on the catheter, and the drug lumen runs through the drug hole and the rear end of the catheter.

[0015] Furthermore, the number of the drug liquid holes is more than two, and the more than two drug liquid holes are evenly arranged along the same circumference of the catheter, and a circle of drug liquid grooves is opened on the tube wall of the same circumference of the catheter.

[0016] Furthermore, the guidewire catheter set also includes a triangular catheter joint, which is connected to the rear end of the catheter. The triangular catheter joint includes a main joint and a secondary joint that are connected to each other. The ends of the first guidewire and the second guidewire pass through the main joint, and the secondary joint is connected to the drug solution lumen.

[0017] Furthermore, the guidewire catheter kit also includes a mouthpiece and a head strap connected to the mouthpiece.

[0018] In the multi-lumen airway angiography guidewire catheter set for conveying a Y-shaped airway stent of the present invention, a catheter is first used to lay a guide rail for inserting a first guidewire and a second guidewire, so that the two guidewires can smoothly enter the two bronchi synchronously, and then the catheter is slid out from the two guidewires and withdrawn, and the first guidewire and the second guidewire of the withdrawn catheter are straightened by two fixing members to avoid entanglement with each other, so that the Y-shaped airway stent can be smoothly inserted into the two bronchi through the first guidewire and the second guidewire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 This is a structural application diagram of the guidewire catheter set of the present invention;

[0021] Figure 2 is a structural diagram of a guidewire catheter set of the present invention;

[0022] Figure 3 yes Figure 2 A cutaway view at an angle;

[0023] Figure 4 yes Figure 2 Another cutaway view from another angle;

[0024] Figure 5 It is a cross-sectional view of a guidewire catheter set of the present invention after the branch catheter is extended at an angle;

[0025] Figure 6 It is a cross-sectional view at another angle after the branch catheter in the guidewire catheter set of the present invention is extended;

[0026] Figure 7 It is a structural diagram of the first guide wire and the second guide wire in the guide wire catheter set of the present invention being intertwined with each other;

[0027] Figure 8 yes Figure 7 Partial structural diagram of

[0028] Fig. 9 This is a structural diagram of the guidewire catheter set of the present invention after a triangular catheter joint is provided;

[0029] Fig.10 yes Fig. 9 sectional view of

[0030] Fig.11 It is a front view of the rear end of the catheter in the guidewire catheter set of the present invention;

[0031] Fig.12 This is a structural application diagram of the guidewire catheter set of the present invention after the catheter is withdrawn;

[0032] Fig.13 It is a diagram of the installation of the guidewire catheter set and the Y-shaped airway stent of the present invention;

[0033] Fig.14 It is a structural diagram of the first fixing member and the second fixing member in the guidewire catheter set of the present invention;

[0034] The figures are marked as follows: 1. catheter; 2. first guide wire; 3. second guide wire; 4. first fixing member; 5. second fixing member; 6. main catheter cavity; 7. auxiliary catheter cavity; 8. auxiliary catheter cavity opening; 9. terminal; 10. buckle; 11. groove; 12. one-way card; 13. branch catheter; 14. guide groove; 15. guide strip; 16. mark; 17. drug solution cavity; 18. drug solution hole; 19. drug solution tank; 20. main joint; 21. auxiliary joint; 22. mouthpiece; 23. head strap; 24. main trachea; 25. bronchus; 26. Y-type airway delivery device. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0036] like Figures 1 to 14As shown, a multi-lumen airway angiography guidewire catheter set for conveying a Y-shaped airway stent according to an embodiment of the present invention comprises: a catheter 1, a first guidewire 2, a second guidewire 3, a first fixing member 4, and a second fixing member 5; the front end of the catheter 1 is bent, and a main catheter lumen 6 and a secondary catheter lumen 7 which are independent of each other are opened in the catheter 1, the main catheter lumen 6 passes through the bent front end of the catheter 1 and the rear end of the catheter 1, a secondary catheter lumen opening 8 is opened on the side of the bending part of the catheter 1 away from the bent front end of the catheter 1, the secondary catheter lumen 7 passes through the secondary catheter lumen opening 8 and the rear end of the catheter 1, the first guidewire 2 is arranged in the main catheter lumen 6, the second guidewire 3 is arranged in the secondary catheter lumen 7 and extends out of the secondary catheter lumen opening 8 for bending, and the bending direction of the second guidewire 3 is opposite to the bending direction of the bending shape of the catheter 1;

[0037] The first fixing member 4 and the second fixing member 5 have the same structure, both of which include two-petal fixing blocks; one end of the two-petal fixing blocks is connected through an end head 9, and the two-petal fixing blocks can be opened and closed around the end head 9, and the other end of the two-petal fixing blocks is provided with a buckle 10, and two grooves 11 are formed on the inner wall adjacent to each other after the two-petal fixing blocks are closed, which are convenient for correspondingly inserting the first guide wire 2 and the second guide wire 3. The grooves 11 here can be pieced together on both sides, or can only exist on a single inner wall, as long as the guide wire can be inserted.

[0038] The material of the catheter 1 is polyvinyl chloride. The shape of the catheter 1 is similar to an L shape. The bend is an arc transition, the bending angle is an obtuse angle, the long straight section is cylindrical, the short section has a certain taper, and the end is a rounded transition, which is convenient for passing through the trachea to enter the accurate position.

[0039] In the multi-lumen airway angiography guidewire catheter set for conveying a Y-shaped airway stent of the present invention, the catheter 1 is first used to lay a guide rail for the insertion of the first guidewire 2 and the second guidewire 3, so that the two guidewires can smoothly enter the two bronchi 25 synchronously, and then the catheter 1 is slid out from the two guidewires, and the first guidewire 2 and the second guidewire 3 of the withdrawn catheter 1 are straightened by two fixing parts to avoid mutual entanglement, so that the Y-shaped airway stent can be smoothly inserted into the two bronchi 25 through the first guidewire 2 and the second guidewire 3.

[0040] As a preferred technical solution, after the two halves of the fixing block are closed, one-way cards 12 are formed in the groove 11, and the two one-way cards 12 in the first fixing member 4 face the second fixing member 5, and the two one-way cards 12 in the second fixing member 5 face the first fixing member 4. The one-way cards 12 can be used to more conveniently straighten the first guide wire 2 and the second guide wire 3. Because the one-way cards 12 in the two fixing members face each other, one of the fixing members can be used to fix the guide wire, and the other fixing member can be used to slide and straighten.

[0041] As a preferred technical solution, two semicircular grooves 11 are provided on the opposite inner walls of the two halves of the fixing block, and half of a one-way card 12 is arranged in each semicircular groove 11; when the two halves of the fixing block are closed, two complete circular grooves 11 are formed, and a complete one-way card 12 is formed in each circular groove 11, which is more convenient, more evenly stressed, and more stable and reliable.

[0042] As a preferred technical solution, the main catheter lumen 6 is located on the side of the catheter 1 facing away from the bend of the catheter 1, and the secondary catheter lumen 7 is located on the side of the catheter 1 facing the bend of the catheter 1; at the bend of the catheter 1, the main catheter lumen 6 and the secondary catheter lumen 7 are spirally wound around each other for half a circle; the guidewire catheter set also includes a branch catheter 13, which is arranged in the secondary catheter lumen 7 and extends out of the secondary catheter lumen opening 8 for bending, and the bending direction of the branch catheter 13 is opposite to the bending direction of the bend of the catheter 1, and the second guidewire 3 is arranged in the branch catheter 13.

[0043] A first guide wire 2 is arranged inside the main catheter cavity 6, a branch catheter 13 is arranged inside the auxiliary catheter cavity 7, a second guide wire 3 is sleeved inside the branch catheter 13, and the front end area of ​​the branch catheter 13 is designed to have a bending memory characteristic. When the branch catheter 13 is extended from the front end of the auxiliary catheter cavity 7 of the catheter 1, the auxiliary catheter cavity opening 8 is 5CM away from the end of the catheter 1. Under the effect of the bending memory, the extended section of the branch catheter 13 will bend, and the bending degree of the branch catheter 13 is symmetrical with the bending section of the catheter 1, so that when the first guide wire 2 at the front end of the catheter 1 and the second guide wire 3 at the front end of the branch catheter 13 are extended, the first guide wire 2 and the second guide wire 3 are respectively equal to the angle between the axis of the long straight section of the catheter 1, so that the first guide wire 2 and the second guide wire 3 can be smoothly passed into their respective corresponding bronchi 25.

[0044] As a preferred technical solution, a guide groove 14 is provided on the portion of the branch catheter 13 extending out of the secondary catheter cavity 8, and a guide bar 15 is provided at the secondary catheter cavity 8; when the branch catheter 13 extends out of the secondary catheter cavity 8, the guide bar 15 is clamped in the guide groove 14 to guide the extension of the branch catheter 13 and limit the extension length of the branch catheter 13; marks 16 are provided on the portion of the branch catheter 13 extending out of the secondary catheter cavity 8, on the bent portion of the catheter 1 and on the straight portion of the catheter 1.

[0045] Marks 16 are inlaid on the outer tube walls at both ends of the bending part of the catheter 1 to facilitate contrast imaging. The front end of the branch catheter 13 is fixed with a mark 16, and the outer wall of the front end of the branch catheter 13 is provided with a guide groove 14 along the axial direction. The guide groove 14 extends from the front end of the branch catheter 13 to the inner side of the auxiliary catheter cavity 8 of the catheter 1. A protruding guide bar 15 is fixedly formed on the inner side of the auxiliary catheter cavity 8 of the catheter 1. The guide bar 15 is stuck in the guide groove 14 of the branch catheter 13. When the branch catheter 13 moves axially inside the auxiliary catheter cavity 7, the guide bar 15 can guide the branch catheter 13 so that the branch catheter 13 will not turn. When the branch catheter 13 is extended, the front end of the branch catheter 13 is bent and faces the direction of the bronchus 25. When the bent section of the front end of the branch catheter 13 is extended, the guide bar 15 of the auxiliary catheter cavity 8 limits the branch catheter 13 so that the branch catheter 13 will not be over-extended.

[0046] As a preferred technical solution, a drug lumen 17 which is independent of the main catheter lumen 6 and the auxiliary catheter lumen 7 is provided in the catheter 1 , and a drug hole 18 is provided on the catheter 1 , and the drug lumen 17 passes through the drug hole 18 and the rear end of the catheter 1 .

[0047] Three catheter cavities are arranged inside the catheter 1, namely, a main catheter cavity 6, a secondary catheter cavity 7, and a liquid medicine cavity 17. The three catheter cavities are independent of each other and do not interfere with each other. The overall trend of the main catheter cavity 6 is consistent with the external trend of the catheter 1, extending from the tail end of the catheter 1 to the front end of the catheter 1 at the bend. The main catheter cavity 6 is located at an upper position inside the long straight section of the catheter 1, and a secondary catheter cavity 7 is arranged at a lower position inside the long straight section of the catheter 1. The main catheter cavity 6 and the secondary catheter cavity 7 are both long straight cylindrical sections in the long straight section of the catheter 1, and the main catheter cavity 6 and the secondary catheter cavity 7 are independent of each other and do not interfere with each other. In the area near the starting end of the circular arc section of the catheter 1, the main catheter cavity 6 and the secondary catheter cavity 7 inside the catheter 1 are spirally wound around each other for half a circle. After half a circle of spiral winding, the relative positions of the auxiliary catheter cavity 7 and the main catheter cavity 6 in the vertical direction are interchanged. At the same time, after spiral winding, the direction of the auxiliary catheter cavity 7 follows the trend of the spiral winding section so that the auxiliary catheter cavity 7 penetrates the upper wall of the catheter 1, so that the second guide wire 3 inside the auxiliary catheter cavity 7 can have a sufficiently long bending arc and a sufficiently gentle bending arc for the second guide wire 3 to pass through when entering the curved section of the bronchus 25, so as to prevent the bending angle from being too sharp and the bending length from being too small when the auxiliary catheter cavity opening 8 is set to bend when the long straight section of the auxiliary catheter cavity 7 is placed on the upper side of the main catheter cavity 6, resulting in the second guide wire 3 not being able to pass smoothly or being broken. After passing through the half circle of spiral winding section, the main catheter cavity 6 continues to follow the shape of the catheter 1 until it reaches the front end of the catheter 1 and penetrates. The main catheter cavity 6 and the auxiliary catheter cavity 7 are both inside the catheter 1 in the spiral winding section, and do not exceed the wall of the catheter 1. At the same time, the main catheter cavity 6 and the auxiliary catheter cavity 7 are independent of each other and will not interfere with each other. At the same time, the inner diameter of the main catheter cavity 6 is smaller than the inner diameter of the auxiliary catheter cavity 7.

[0048] As a preferred technical solution, the number of the drug solution holes 18 is more than two, and the more than two drug solution holes 18 are evenly arranged along the same circumference of the catheter 1. A circle of drug solution grooves 19 is opened on the tube wall of the same circumference of the catheter 1.

[0049] A drug lumen 17 is provided inside the catheter 1 in the free space of the long straight section from the tail end to the arc section area. The drug lumen 17 has drug holes 18 penetrating in both directions along the normal direction of the catheter 1 wall at the end of the arc side of the catheter 1. A circle of drug grooves 19 is provided on the wall corresponding to the drug holes 18. Anesthetic is introduced into the drug grooves 19. The anesthetic passes through the drug lumen 17 and flows through the drug holes 18, and then flows into the drug grooves 19 from the drug holes 18, so that the anesthetic can evenly anesthetize the mucosa of the inner wall of the airway lumen without causing local unevenness.

[0050] As a preferred technical solution, the guidewire catheter set also includes a triangular catheter joint, which is connected to the rear end of the catheter 1. The triangular catheter joint includes a main joint 20 and a secondary joint 21 that are connected to each other. The ends of the first guide wire 2 and the second guide wire 3 pass through the main joint 20, and the secondary joint 21 is connected to the drug solution lumen 17.

[0051] A triangular catheter joint is coaxially fixedly connected to the rear end of the catheter 1, wherein the obliquely fixed joint is the secondary joint 21, and the joint coaxially connected to the catheter 1 is the main joint 20. The first guide wire 2 and the rear end of the branch catheter 13 extend from the main joint 20, and the second guide wire 3 extends from the rear end of the branch catheter 13. The first guide wire 2, the branch catheter 13 and the second guide wire 3 can be controlled at the main joint 20, and the secondary joint 21 is connected to the drug solution lumen 17, and anesthetic can be injected into the inside of the catheter 1 through the secondary joint 21.

[0052] As a preferred technical solution, the guidewire catheter set also includes a mouthpiece 22 and a head strap 23 connected to the mouthpiece 22 to facilitate mouth biting operations.

[0053] When treatment is needed, the guidewire catheter sleeve is inserted into the patient's oral cavity, the front elbow of the catheter 1 is just aligned with the glottis, and the guidewire is used to enter the main trachea 24 of the airway, the syringe is docked with the auxiliary connector 21, and the anesthetic is injected into the liquid lumen 17 of the catheter 1. The anesthetic passes through the liquid lumen 17 and flows through the liquid hole 18, and then flows into the liquid tank 19 from the liquid hole 18, so that the anesthetic can evenly anesthetize the mucosa of the inner wall of the airway lumen without local unevenness. Then the guidewire catheter sleeve is inserted into the bronchus 25 on one side, and the auxiliary catheter cavity 8 just corresponds to the bronchus 25 on the other side, and then the branch catheter 13 is moved forward. When the branch catheter 13 extends from the front end of the secondary catheter cavity 7 of the catheter 1, the extended section of the branch catheter 13 will bend due to the effect of bending memory, and the bending section of the branch catheter 13 is symmetrical with the bending section of the catheter 1, so that the branch catheter 13 can be accurately delivered into the bronchus 25 and the front end of the branch catheter 13 is facing the bronchus 25. When the first guide wire 2 at the front end of the catheter 1 and the second guide wire 3 at the front end of the branch catheter 13 are extended, the first guide wire 2 and the second guide wire 3 have equal angles with the axis of the long straight section of the catheter 1, so that the first guide wire 2 and the second guide wire 3 can both smoothly pass into their corresponding bronchi 25.

[0054] When the first guide wire 2 and the second guide wire 3 are arranged, the guide wires need to be fixed to prevent them from getting entangled with each other and affecting the delivery of the Y-shaped stent on the guide wire by the Y-shaped airway delivery device 26. Take the guide wire catheter set out of the mouth, with the rear end of the guide wire still inserted into the catheter 1. Pass the mouthpiece 22 through the catheter 1 and put it into the patient's mouth to let the patient bite the mouthpiece 22 to support the mouth. Use the first fixing member 4 and the second fixing member 5 to clamp the guide wire between the mouthpiece 22 and the catheter 1 near the mouthpiece 22. The first fixing member 4 and the second fixing member 5 have the same structure and are both composed of two petals. The two petals are connected to each other at the end 9 at one end so that the two petal fixing blocks can open and close around the connection. The port at the other end is provided with a buckle 10, which can be used as After the two petals are closed, the buckle 10 can be buckled to tighten the two petals. Two semicircular grooves 11 are arranged on each petal fixing block. There is a distance between the two semicircular grooves 11. When the two petal fixing blocks are closed, two complete circular grooves 11 are formed. Half of a one-way card 12 is fixedly arranged in the semicircular groove 11 of each petal fixing block. When the two petal fixing blocks are closed, the one-way card 12 in the same circular groove 11 is fully combined. The one-way card 12 inside the first fixing piece 4 faces the outside of the body, and the one-way card 12 inside the second fixing piece 5 faces the direction of the mouthpiece 22. The one-way card 12 in the first fixing piece 4 faces the outside of the body, and the one-way card 12 inside the second fixing piece 5 faces the direction of the mouthpiece 22. The card 12 can clamp and restrict the tendency of the guide wire to move in a specific direction, so that the first fixing member 4 can only be pulled along the guide wire toward the mouthpiece 22, and the inner diameter of the mouthpiece 22 is smaller than the outer diameter of the first fixing member 4, so that the first fixing member 4 is kept in a relatively fixed area, and the second fixing member 5 can only be pulled along the guide wire in the opposite direction to the mouthpiece 22. The first fixing member 4 is moved away from the guide wire and then the catheter 1 is pulled out of the guide wire, and then the positions of the guide wire, the first fixing member 4 and the oral mouthpiece 22 are relatively fixed, and the second fixing member 5 is pulled along the guide wire. 5, leaving a sufficiently long guide wire between the first fixing member 4 and the second fixing member 5, so that there is a distance of 2-3 cm between the fixing block and the tail end of the guide wire, at this time the guide wire between the first fixing member 4 and the second fixing member 5 is not entangled, and then the tail end of the guide wire is inserted into the catheter of the Y-shaped airway conveyor 26, at this time the second fixing member 5 is opened and removed, the guide wires on the rear side of the first fixing member 4 are all passed into the catheter of the Y-shaped airway conveyor 26, and then the first fixing member 4 is removed, and the Y-shaped airway conveyor 26 with the Y-shaped airway stent is sent to the corresponding position of the airway. This process step is to prevent the guide wires from getting entangled with each other when the guide wire is passed into the Y-shaped airway conveyor 26 after the guide wire catheter set is withdrawn and removed.

[0055] As a preferred technical solution, the main catheter lumen 6 is located on the catheter 1 toward the curved side of the catheter 1 , and the secondary catheter lumen 7 is located on the catheter 1 away from the curved side of the catheter 1 .

[0056] The triple lumen tracheal catheter 1 can be replaced by a double lumen tracheal catheter 1, see Figure 10-11The appearance of the double-lumen airway angiography catheter 1 is the same as that of the three-lumen airway angiography catheter 1. The main catheter lumen 6 and the auxiliary catheter lumen 7 inside the double-lumen airway angiography catheter 1 are not provided with a spiral winding structure in the area near the starting end of the circular arc section of the catheter 1. The main catheter lumen 6 inside the double-lumen airway angiography catheter 1 is always located at the lower side of the auxiliary catheter lumen 7. At the same time, the main catheter lumen 6 follows the shape of the catheter 1 from the tail end of the catheter 1 to the front end of the catheter 1 and penetrates. After passing through the cylindrical shape of the long straight section, the auxiliary catheter lumen 7 bends toward the upper side of the catheter 1 at the area near the starting end of the circular arc section of the catheter 1 and penetrates the upper tube wall of the catheter 1. The auxiliary catheter lumen opening 8 to 5CM away from the end of the catheter 1, in this scheme, the branch catheter 13 does not need to be inserted into the auxiliary catheter cavity 7, and the guide wires are directly inserted into the main catheter cavity 6 and the auxiliary catheter cavity 7. The guide wire inside the main catheter cavity 6 directly extends from the front end of the catheter 1. When the guide wire inside the auxiliary catheter cavity 7 is extended after passing through the curved guide of the curved section of the auxiliary catheter cavity 7, the guide wire is just toward its corresponding bronchus 25. When the guide wires inside the main catheter cavity 6 and the auxiliary catheter cavity 7 are extended, the angles between the two guide wires and the axis of the long straight section of the catheter 1 are equal, and the two guide wires are symmetrical relative to the axis of the long straight section of the catheter 1, so that the two guide wires can be smoothly inserted into their respective corresponding bronchi 25.

[0057] The innovative features and beneficial effects of the present invention are at least:

[0058] 1. The catheter 1 is provided with three catheter lumens, namely the main catheter lumen 6, the auxiliary catheter lumen 7, and the drug solution lumen 17. The three lumens are independent of each other and do not interfere with each other.

[0059] 2. In the area near the starting end of the circular arc section of the catheter 1, the main catheter cavity 6 and the auxiliary catheter cavity 7 inside the catheter 1 are spirally wound with each other for half a circle. After the spiral winding for half a circle, the relative positions of the auxiliary catheter cavity 7 and the main catheter cavity 6 in the up and down directions are exchanged. At the same time, after the spiral winding, the direction of the auxiliary catheter cavity 7 follows the trend of the spiral winding section so that the auxiliary catheter cavity 7 penetrates the upper wall of the catheter 1. After the main catheter cavity 6 passes through the half-circle spiral winding section, the direction continues to follow the shape of the catheter 1 until it reaches the front end of the catheter 1 and penetrates, so that the second guide wire 3 inside the auxiliary catheter cavity 7 can have a sufficiently long bending arc and a sufficiently gentle bending arc for the second guide wire 3 to pass through when entering the curved section of the bronchus 25, so as to prevent the long straight section of the auxiliary catheter cavity 7 from being placed on the upper side of the main catheter cavity 6. When the bending angle is too sharp and the bending length is too small when the bending turn needs to be set at the auxiliary catheter cavity opening 8, the second guide wire 3 cannot pass smoothly or the second guide wire 3 is broken.

[0060] 3. A branch catheter 13 is arranged inside the auxiliary catheter cavity 7, and a second guide wire 3 is sleeved inside the main catheter cavity 6. The front end area of ​​the branch catheter 13 is designed to have a bending memory characteristic. When the branch catheter 13 is extended from the front end of the auxiliary catheter cavity 7 of the catheter 1, under the effect of the bending memory, the extended section of the branch catheter 13 will bend, and the curvature of the curved section of the branch catheter 13 is symmetrical with that of the curved section of the catheter 1, so that when the first guide wire 2 at the front end of the catheter 1 and the second guide wire 3 at the front end of the branch catheter 13 are extended, the first guide wire 2 and the second guide wire 3 are respectively at equal angles with the axis of the long straight section of the catheter 1.

[0061] 4. A drug lumen 17 is provided inside the catheter 1 in the free space of the long straight section from the tail end to the arc section area. The drug lumen 17 has drug holes 18 penetrating in both directions along the normal direction of the tube wall of the catheter 1 at the end 9 on the arc side of the catheter 1. A circle of drug grooves 19 is provided on the tube wall corresponding to the drug holes 18. Anesthetic is introduced into the drug grooves 19. The anesthetic passes through the drug lumen 17 and flows through the drug holes 18, and then flows into the drug grooves 19 from the drug holes 18, so that the anesthetic can evenly anesthetize the mucosa of the inner wall of the airway lumen without causing local unevenness.

[0062] 5. A guide groove 14 is axially arranged on the outer wall of the front end of the branch catheter 13, and the guide groove 14 extends from the front end of the branch catheter 13 to the inner side of the auxiliary catheter cavity 8. A protruding guide bar 15 is fixedly provided on the inner side of the auxiliary catheter cavity 8 of the catheter 1, and the guide bar 15 is stuck in the guide groove 14 of the branch catheter 13. When the branch catheter 13 moves axially inside the auxiliary catheter cavity 7, the guide bar 15 can guide the branch catheter 13 so that the branch catheter 13 will not turn. When the branch catheter 13 is extended, the front end of the branch catheter 13 is bent and faces the direction of the bronchus 25.

[0063] 6. A triangular catheter joint is coaxially fixedly connected to the rear end of the catheter 1, wherein the obliquely fixed joint is the secondary joint 21, and the joint coaxially connected to the catheter 1 is the main joint 20. The first guide wire 2 and the rear end of the branch catheter 13 extend from the main joint 20, and the second guide wire 3 extends from the rear end of the branch catheter 13. The first guide wire 2, the branch catheter 13 and the second guide wire 3 can be controlled at the main joint 20, and the secondary joint 21 is connected to the drug solution lumen 17, and anesthetic can be injected into the inside of the catheter 1 through the secondary joint 21.

[0064] 7. The first fixing part 4 and the second fixing part 5 are clamped on the guide wire between the mouthpiece 22 and the catheter 1 near the mouthpiece 22. The first fixing part 4 and the second fixing part 5 have the same structure and are both composed of two petals. The end 9 at one end connects the two petals to each other so that the two petals of the fixing blocks can be opened and closed around the connection. The port at the other end is provided with a buckle 10. When the two petals of the fixing blocks are closed, the buckle 10 can be buckled to fasten the two petals of the fixing blocks. Two semicircular grooves 11 are provided on each petal of the fixing block. The two semicircular grooves 11 are separated by a distance. When the two petals of the fixing blocks are closed, two complete circular grooves 11 are formed.

[0065] 8. Half of a one-way card 12 is fixedly provided in the semicircular groove 11 of each fixed block. When the two fixed blocks are closed, the one-way card 12 in the same circular groove 11 is completely combined, the one-way card 12 inside the first fixing member 4 faces the outside of the body, and the one-way card 12 inside the second fixing member 5 faces the direction of the mouthpiece 22. The one-way card 12 can clamp and limit the tendency of the guide wire to move in a specific direction. In this way, the first fixing member 4 can only be pulled along the guide wire toward the mouthpiece 22. At the same time, the inner diameter of the mouthpiece 22 is smaller than the outer diameter of the first fixing member 4. In this way, the first fixing member 4 is maintained in a relatively fixed area, and the second fixing member 5 can only be pulled along the guide wire in the opposite direction to the mouthpiece 22.

[0066] 9. The three-lumen airway angiography catheter 1 can be replaced by a double-lumen airway angiography catheter 1. The appearance of the double-lumen airway angiography catheter 1 is the same as that of the three-lumen airway angiography catheter 1. The main catheter lumen 6 and the auxiliary catheter lumen 7 inside the double-lumen airway angiography catheter 1 are not provided with a spiral winding structure in the area near the starting end of the arc segment of the catheter 1. The main catheter lumen 6 inside the double-lumen airway angiography catheter 1 is always located at the lower side of the auxiliary catheter lumen 7.

[0067] 10. In connection with the above point 9, the branch catheter 13 does not need to be inserted into the secondary catheter lumen 7. Guidewires are directly inserted into the main catheter lumen 6 and the secondary catheter lumen 7. The guidewire inside the main catheter lumen 6 directly extends from the front end of the catheter 1. When the guidewire inside the secondary catheter lumen 7 extends out after passing through the curved guide of the curved section of the secondary catheter lumen 7, the guidewire is just facing its corresponding bronchus 25. When the guidewires inside the main catheter lumen 6 and the secondary catheter lumen 7 are extended, the angles between the two guidewires and the axis of the long straight section of the catheter 1 are equal. At the same time, the two guidewires are symmetrical with respect to the axis of the long straight section of the catheter 1, so that the two guidewires can be smoothly inserted into their respective corresponding bronchi 25.

[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-lumen airway angiography guidewire catheter set for delivering a Y-shaped airway stent, characterized in that: include: A catheter, a first guide wire, a second guide wire, a first fixing member, and a second fixing member; the front end of the catheter is bent, and a main catheter cavity and a secondary catheter cavity that are independent of each other are opened in the catheter, the main catheter cavity passes through the bent front end and the rear end of the catheter, a secondary catheter cavity opening is opened on the side of the catheter bending part away from the bent front end of the catheter, the secondary catheter cavity passes through the secondary catheter cavity opening and the rear end of the catheter, the first guide wire is arranged in the main catheter cavity, the second guide wire is arranged in the secondary catheter cavity and extends out of the secondary catheter cavity opening for bending, and the bending direction of the second guide wire is opposite to the bending direction of the bent shape of the catheter; The first fixing member and the second fixing member have the same structure and both include two fixing blocks; one end of the two fixing blocks is connected by an end head, and the two fixing blocks can be opened and closed around the end head, and the other end of the two fixing blocks is provided with a buckle, and two grooves are formed on the inner wall adjacent to each other after the two fixing blocks are closed, which are convenient for correspondingly inserting the first guide wire and the second guide wire; First, the catheter is used to lay the guide rail for the insertion of the first guide wire and the second guide wire, so that the two guide wires can enter the two bronchi synchronously and smoothly, and then the catheter is slid out from the two guide wires, and the first guide wire and the second guide wire of the withdrawn catheter are straightened through two fixing parts, so that the Y-shaped airway stent can be smoothly inserted into the two bronchi through the first guide wire and the second guide wire; After the two halves of the fixing block are closed, one-way cards are formed in the grooves, two of the one-way cards in the first fixing piece face the second fixing piece, and two of the one-way cards in the second fixing piece face the first fixing piece; the one-way cards are used to straighten the first guide wire and the second guide wire, and because the one-way cards in the two fixing pieces face oppositely, one of the fixing pieces can be used to fix the guide wire, and the other fixing piece can be used to slide and straighten; Two semicircular grooves are provided on the opposite inner walls of the two halves of the fixing block, and half of the one-way card is arranged in each of the semicircular grooves; two complete circular grooves are formed when the two halves of the fixing block are closed, and a complete one-way card is formed in each of the circular grooves; The main catheter lumen is located on the catheter at a side facing away from the catheter bend, and the secondary catheter lumen is located on the catheter at a side facing the catheter bend; at the bend of the catheter, the main catheter lumen and the secondary catheter lumen are spirally wound around each other for half a circle; the guidewire catheter set also includes a branch catheter, which is arranged in the secondary catheter lumen and extends out of the secondary catheter lumen to be bent, and the bending direction of the branch catheter is opposite to the bending direction of the bend of the catheter, and the second guidewire is arranged in the branch catheter; A guide groove is provided on the portion of the branch catheter extending out of the auxiliary catheter cavity, and a guide bar is provided at the auxiliary catheter cavity; when the branch catheter extends out of the auxiliary catheter cavity, the guide bar is clamped in the guide groove to guide the extension of the branch catheter and limit the extension length of the branch catheter; marks are provided on the portion of the branch catheter extending out of the auxiliary catheter cavity, on the bent portion of the catheter and on the straight portion of the catheter.

2. The guidewire catheter kit according to claim 1, characterized in that: The catheter is also provided with a drug solution lumen which is independent of the main catheter lumen and the auxiliary catheter lumen. The catheter is provided with a drug solution hole, and the drug solution lumen runs through the drug solution hole and the rear end of the catheter.

3. The guidewire catheter kit according to claim 2, characterized in that: The number of the liquid medicine holes is more than two, and the more than two liquid medicine holes are evenly arranged along the same circumference of the catheter, and a circle of liquid medicine grooves is provided on the tube wall of the same circumference of the catheter.

4. The guidewire catheter kit according to claim 2, characterized in that: The guidewire catheter set also includes a triangular catheter joint, which is connected to the rear end of the catheter. The triangular catheter joint includes a main joint and a secondary joint that are connected to each other. The ends of the first guidewire and the second guidewire pass through the main joint, and the secondary joint is connected to the drug solution lumen.

5. The guidewire catheter kit according to claim 1, characterized in that: The guidewire catheter kit also includes a mouthpiece and a head strap connected to the mouthpiece.

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