Guide wire guiding device for establishing intervascular access

Abstract

The invention relates to a guide wire guiding device for establishing an intervascular pathway, belongs to the technical field of medical instruments, and solves the problems that in the prior art, a guide wire needs to penetrate through two veins or arteries and is inserted into a sheathing canal to establish connection of two vascular puncture inlets, and the operation difficulty is high. The guide device comprises a first guide unit and a second guide unit, the first guide unit comprises a first guide wire and a first connecting mechanism, the second guide unit comprises a second guide wire and a second connecting mechanism, and the first connecting mechanism and the second connecting mechanism can be connected, so that the first guide unit and the second guide unit are mutually connected. The guiding device does not need to operate a guide wire to enter a catheter / sheath canal cavity from a blood vessel cavity, operation is easy, the operation time is short, and the operation success rate is high.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a guidewire guiding device for establishing an intervascular passage. Background Art

[0002] Interventional surgery is a minimally invasive surgical method that uses special catheters, guidewires and other interventional equipment to diagnose and locally treat the human body under the guidance of medical imaging equipment. It has the advantages of less trauma, quick recovery and fewer complications. It has now become one of the three major medical disciplines along with internal medicine and surgery.

[0003] At present, with the advancement of interventional surgery techniques and instruments, some cases that were once difficult to treat can now be treated with interventional surgery. However, some special cases still require experienced surgeons to spend a lot of time in the operation to achieve the treatment goal.

[0004] For example, for aortic dissection involving the left subclavian artery, it is necessary to establish a pathway from the femoral artery to the left brachial artery; for patients with iliac artery occlusion, it is necessary to establish a pathway from one femoral artery to the contralateral femoral artery; for patients with iliofemoral artery occlusion, it is necessary to establish a pathway from one femoral artery to the contralateral popliteal artery or even the puncture point of the infrapopliteal artery; for patients with filter adhesion after inferior vena cava filter implantation, it is necessary to establish a pathway from the femoral vein to the jugular vein. All of the above pathways require experienced surgeons to super-select the guidewire into a catheter with a diameter of only 2-3mm. Specifically, the pathway requires the guidewire to enter the small cavity (catheter / sheath cavity) in the large cavity (vascular cavity) and pass out at the extracorporeal end of the catheter / sheath to establish a guidewire guide for subsequent operations. This operation is also called the "fishing" technique in clinical practice, which can vividly describe its difficulty in operation. The guidewire needs to connect two vascular puncture points and insert the sheath, which is difficult to operate and takes a long time to operate. Some patients may even fail to successfully establish the pathway, resulting in surgical failure. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a guidewire guiding device for establishing an intervascular passage, which is used to solve the problem in the prior art that the guidewire needs to pass through two blood vessels and be inserted into a sheath to establish a connection between two vascular puncture entrances, which is difficult to operate and may lead to surgical failure.

[0006] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0007] The present invention provides a guide wire guiding device for establishing an inter-vascular access path, which includes a first guiding unit and a second guiding unit. The first guiding unit includes a first guide wire and a first connecting mechanism, and the second guiding unit includes a second guide wire and a second connecting mechanism. The first connecting mechanism is arranged at the end of the first guide wire, and the second connecting mechanism is arranged at the end of the second guide wire. The first connecting mechanism and the second connecting mechanism can be connected, thereby connecting the first guiding unit and the second guiding unit to each other.

[0008] Further, the first connecting mechanism includes a first bottom plate and first connecting teeth. The first bottom plate is connected to the first guide wire, and the first connecting teeth are arranged on the first bottom plate.

[0009] Further, a plurality of the first connecting teeth are provided, and a first connecting groove is formed between two adjacent first connecting teeth.

[0010] Further, the second connecting mechanism includes a second bottom plate and second connecting teeth. The second bottom plate is connected to the second guide wire, and the second connecting teeth are arranged on the second bottom plate.

[0011] Further, a plurality of the second connecting teeth are provided, and a second connecting groove is formed between two adjacent second connecting teeth; the first connecting teeth can be connected to the second connecting groove, and the second connecting teeth can be connected to the first connecting groove, thereby connecting the first connecting mechanism and the second connecting mechanism.

[0012] Further, the structures of the first connecting teeth and the second connecting teeth are the same.

[0013] Further, the structures of the first connecting groove and the second connecting groove are the same.

[0014] Further, the first connecting mechanism includes a first connecting rod and a connecting groove. The first connecting rod is connected to the first guide wire.

[0015] Further, a plurality of the connecting grooves are provided and are sequentially arranged on the first connecting rod along the axial direction of the first connecting rod.

[0016] Further, the second connecting mechanism includes a second connecting rod and a connecting flange. The second connecting rod is connected to the second guide wire, and a plurality of the connecting flanges are provided and are sequentially arranged on the second connecting rod along the axial direction of the second connecting rod.

[0017] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0018] (1) The first connecting mechanism of the present invention is a magnetic part, and the second connecting mechanism is an iron part; or the first connecting mechanism is an iron part and the second connecting mechanism is a magnetic part. The first connecting mechanism can magnetically attract the second connecting mechanism to achieve the automatic connection of the first connecting mechanism and the second connecting mechanism; during the process of establishing the connection path, the guiding device of the present invention does not need to operate the guide wire to enter the catheter / sheath lumen in the blood vessel lumen, with simple operation, short operation time, and high operation success rate;

[0019] (2) The airbag of the present invention can expand in the direction of the central axis of the tube body. The outer wall of the airbag can be connected to the outer walls of the first bottom plate and the second bottom plate, and push the first connecting mechanism and the second connecting mechanism in the direction of the central axis, and can make the first connecting tooth and the second connecting groove or the second connecting tooth and the first connecting groove be completely connected. The connection area between the first connecting tooth and the second connecting groove or the second connecting tooth and the first connecting groove is large, and the connection is firm;

[0020] (3) The included angle between the occlusal groove surface of the present invention and the axis of the first guide wire is less than 90°. After the first connecting tooth and the second connecting groove or the second connecting tooth and the first connecting groove are connected, when pulling the first guide wire in the direction away from the second guide wire, the occlusal tooth surface and the occlusal groove surface are connected, and the occlusal groove surface provides a component force in the direction of the first bottom plate for the occlusal tooth surface. The first connecting mechanism pulls the second connecting mechanism in the direction of the first connecting mechanism, further preventing the first connecting mechanism and the second connecting mechanism from separating;

[0021] (4) Under the magnetic attraction, the connecting flange of the present invention can be automatically and completely inserted into the connecting groove, realizing the automatic and complete connection between the first connecting mechanism and the second connecting mechanism, and the first guide wire and the second guide wire are coaxial; when pulling the first guide wire in the direction away from the second guide wire, there is no torsion between the first connecting mechanism and the second connecting mechanism, further preventing the first connecting mechanism and the second connecting mechanism from separating;

[0022] (5) Under the magnetic attraction, the second connecting mechanism of the present invention only needs to connect one of the multiple jaws to establish a guide wire guiding path, reducing the operation difficulty of connecting the first guiding unit and the second guiding unit, shortening the operation time, and improving the operation success rate; the tube body pushes the clamping blocks of the multiple jaws to move in the direction of the axis of the tube body, and the clamping blocks of the multiple jaws can all be connected to the connecting flange. The first connecting mechanism can completely wrap the second connecting mechanism to prevent the first connecting mechanism and the second connecting mechanism from separating;

[0023] (6) The pulling hook can connect the clamping block and the connecting flange. In addition to magnetic attraction, it further ensures that the clamping block does not separate from the connecting flange. One end of the spring is connected to the hook groove, and the other end of the spring is connected to the support rod. The spring is used to push the pulling hook, so that the convex block is inserted into the pulling groove and connected to the pulling groove to prevent the clamping block and the connecting flange from radially separating.

[0024] In the present invention, the above technical solutions can be combined with each other to achieve more preferred combined solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be made obvious from the description of the specification or understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained from the content specifically pointed out in the text and the drawings. Description of the Drawings

[0025] Figure 1 Schematic diagram of the overall structure of the guiding device for Embodiment 1;

[0026] Figure 2 Schematic diagram of the axial sectional structure of the guiding device for Embodiment 1;

[0027] Figure 3 Schematic diagram of the overall structure of the guiding device for Embodiment 2;

[0028] Figure 4 Schematic diagram of the overall structure of the guiding device for Embodiment 3;

[0029] Figure 5 Schematic diagram of the axial sectional structure of the guiding device for Embodiment 3;

[0030] Figure 6 Schematic diagram of the longitudinal sectional structure of the locking unit for Embodiment 4.

[0031] Reference Signs:

[0032] 1 - First guide wire; 2 - First connection mechanism; 3 - Second guide wire; 4 - Second connection mechanism; 5 - Sheath tube unit; 6 - Drainage valve; 21 - First base plate; 22 - First connection teeth; 23 - First connection groove; 24 - First connecting rod; 25 - Connection groove; 26 - Traction rod; 27 - Clamping block; 28 - Hook groove; 41 - Second base plate; 42 - Second connection teeth; 43 - Second connection groove; 44 - Second connecting rod; 45 - Connection flange; 46 - Pulling groove; 51 - Tube body; 52 - Airbag; 61 - Support rod; 62 - Protrusion; 63 - Spring; 231 - Sliding groove surface; 232 - Biting groove surface; 421 - Sliding tooth surface; 422 - Biting tooth surface. Detailed Description of the Embodiments

[0033] The following describes the specific embodiments of the present invention to facilitate those skilled in the art of the present technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of the present technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are within the scope of protection.

[0034] Embodiment 1

[0035] A specific embodiment of the present invention is as follows Figure 1 As shown, a guide wire guiding device for establishing an inter-vascular access (hereinafter referred to as the guiding device) includes a first guiding unit and a second guiding unit. The first guiding unit includes a first guide wire 1 and a first connecting mechanism 2, and the second guiding unit includes a second guide wire 3 and a second connecting mechanism 4. The first connecting mechanism 2 is arranged at the end of the first guide wire 1, and the second connecting mechanism 4 is arranged at the end of the second guide wire 3. The first connecting mechanism 2 and the second connecting mechanism 4 can be connected, thereby connecting the first guiding unit and the second guiding unit to form the guiding device of this embodiment.

[0036] Preferably, the first connecting mechanism 2 is a magnetic part, and the second connecting mechanism 4 is an iron part; or the first connecting mechanism 2 is an iron part, and the second connecting mechanism 4 is a magnetic part. The first connecting mechanism 2 can magnetically attract the second connecting mechanism 4, and the first connecting mechanism 2 and the second connecting mechanism 4 can be automatically connected.

[0037] Taking the establishment of a femoral vein-jugular vein communication pathway as an example, during use, medical staff insert the first guiding unit into the femoral vein through the skin with the first connecting mechanism 2 as the guide, then insert the second guiding unit into the jugular vein with the second connecting mechanism 4 as the guide, and make the first connecting mechanism 2 and the second connecting mechanism 4 meet in the vascular lumen. Then, connect the first connecting mechanism 2 and the second connecting mechanism 4, and the first guiding unit and the second guiding unit can be connected to each other, so as to establish a guide wire guiding device for crossing two veins for subsequent operations. Compared with the "fishing" operation of the prior art, during the process of establishing the connection pathway, the guiding device of this embodiment does not require operating the guide wire to enter the catheter / sheath lumen in the vascular lumen, with simple operation, short operation time, and high surgical success rate.

[0038] Preferably, as Figure 1 shown, the first connecting mechanism 2 includes a first bottom plate 21, first connecting teeth 22 and a first connecting groove 23. The first bottom plate 21 is connected to the first guide wire 1, the first connecting teeth 22 are arranged on the first bottom plate 21, there are multiple first connecting teeth 22, and a first connecting groove 23 is formed between two adjacent first connecting teeth 22. The second connecting mechanism 4 includes a second bottom plate 41, second connecting teeth 42 and a second connecting groove 43. The second bottom plate 41 is connected to the second guide wire 3, the second connecting teeth 42 are arranged on the second bottom plate 41, there are multiple second connecting teeth 42, and a second connecting groove 43 is formed between two adjacent second connecting teeth 42. The first connecting teeth 22 can be connected to the second connecting groove 43, and the second connecting teeth 42 can also be connected to the first connecting groove 23, thereby connecting the first connecting mechanism 2 and the second connecting mechanism 4.

[0039] When the first connecting mechanism 2 is connected to the second connecting mechanism 4, it is possible that some of the first connecting teeth 22 are not connected to the second connecting groove 43 or some of the second connecting teeth 42 are not connected to the first connecting groove 23. The connection area between the first connecting teeth 22 and the second connecting groove 43 or between the second connecting teeth 42 and the first connecting groove 23 is small, and the connection is not stable. Preferably, as Figure 1 shown, in order to make the connection between the first connecting mechanism 2 and the second connecting mechanism 4 more stable and increase the connection area between the first connecting teeth 22 and the second connecting groove 43 or between the second connecting teeth 42 and the first connecting groove 23, the guiding device of this embodiment further includes a sheath unit 5. The sheath unit 5 is sleeved on the first guiding unit and / or the second guiding unit. The sheath unit 5 is used for percutaneous puncture and insertion into a blood vessel to provide a channel for the first guiding unit and / or the second guiding unit.

[0040] Preferably, as Figure 2 shown, the sheath unit 5 includes a tube body 51 and an airbag 52. The airbag 52 is arranged on the inner wall of the tube body 51. The volume of the airbag 52 can become smaller after exhausting air and can also become larger after injecting air. Preferably, the airbag 52 is an annular airbag. During the inflation process, the airbag 52 can expand towards the central axis direction of the tube body 51. The outer wall of the airbag 52 can be connected to the outer walls of the first bottom plate 21 and the second bottom plate 41, and can push the first connecting mechanism 2 and the second connecting mechanism 4 towards the central axis direction, and can make the first connecting teeth 22 and the second connecting groove 43 or the second connecting teeth 42 and the first connecting groove 23 be completely connected. The connection area between the first connecting teeth 22 and the second connecting groove 43 or between the second connecting teeth 42 and the first connecting groove 23 is large, and the connection is stable.

[0041] Preferably, the first connecting groove 23 and the second connecting groove 43 have the same structure, and the first connecting teeth 22 and the second connecting teeth 42 have the same structure. The first connecting groove 23 includes a sliding groove surface 231 and a biting groove surface 232. Both the sliding groove surface 231 and the biting groove surface 232 are flat surfaces, and the included angle between the sliding groove surface 231 and the biting groove surface 232 is less than 90°. The tooth shape of the second connecting tooth 42 is the same as the cross-sectional shape of the first connecting groove 23. The second connecting tooth 42 includes a sliding tooth surface 421 and a biting tooth surface 422. The included angle between the biting groove surface 232 and the axis of the first guide wire 1 is less than 90°. After the first connecting teeth 22 and the second connecting groove 43 or the second connecting teeth 42 and the first connecting groove 23 are connected, when pulling the first guide wire 1 in the direction away from the second guide wire 3, the biting tooth surface 422 is connected to the biting groove surface 232, and the biting groove surface 232 provides a component force towards the first bottom plate 21 for the biting tooth surface 422. The first connecting mechanism 2 pulls the second connecting mechanism 4 towards the direction of the first connecting mechanism 2, further preventing the first connecting mechanism 2 and the second connecting mechanism 4 from detaching.

[0042] Compared with the prior art, the first connecting mechanism 2 is arranged at the end of the first guide wire 1, and the second connecting mechanism 4 is arranged at the end of the second guide wire 3. The first connecting mechanism 2 and the second connecting mechanism 4 can be connected, thereby connecting the first guiding unit and the second guiding unit to each other to form the guiding device of this embodiment. Compared with the "fishing" operation of the prior art, during the process of establishing a connection path, the guiding device of this embodiment does not require operating the guide wire to enter the catheter / sheath lumen in the blood vessel lumen, with simple operation, short operation time, and high surgical success rate; the first connecting mechanism 2 is a magnetic part, and the second connecting mechanism 4 is an iron part; or the first connecting mechanism 2 is an iron part, and the second connecting mechanism 4 is a magnetic part. The first connecting mechanism 2 can magnetically attract the second connecting mechanism 4, and the first connecting mechanism 2 and the second connecting mechanism 4 can be automatically connected; the airbag 52 can expand in the direction of the central axis of the tube body 51, and the outer wall of the airbag 52 can be connected to the outer walls of the first bottom plate 21 and the second bottom plate 41, and push the first connecting mechanism 2 and the second connecting mechanism 4 in the direction of the central axis, and can make the first connecting tooth 22 and the second connecting groove 43 or the second connecting tooth 42 and the first connecting groove 23 be completely connected. The connection area between the first connecting tooth 22 and the second connecting groove 43 or the second connecting tooth 42 and the first connecting groove 23 is large, and the connection is firm; the included angle between the occlusal groove surface 232 and the axis of the first guide wire 1 is less than 90°. After the first connecting tooth 22 and the second connecting groove 43 or the second connecting tooth 42 and the first connecting groove 23 are connected, when the first guide wire 1 is pulled in the direction away from the second guide wire 3, the occlusal tooth surface 422 is connected to the occlusal groove surface 232, and the occlusal groove surface 232 provides a component force in the direction of the first bottom plate 21 for the occlusal tooth surface 422. The first connecting mechanism 2 pulls the second connecting mechanism 4 in the direction of the first connecting mechanism 2, further preventing the first connecting mechanism 2 from separating from the second connecting mechanism 4.

[0043] Embodiment 2:

[0044] In order to enable the first connecting mechanism 2 and the second connecting mechanism 4 to be automatically and completely connected, as Figure 3 shown, Embodiment 2 cancels the sheath unit 5 in Embodiment 1, and improves the first connecting mechanism 2 and the second connecting mechanism 4 on the basis of Embodiment 1, so that the first connecting mechanism 2 and the second connecting mechanism 4 can be automatically and completely connected.

[0045] Preferably, as Figure 3As shown, the first connecting mechanism 2 includes a first connecting rod 24 and connecting grooves 25. The first connecting rod 24 is connected to the first guide wire 1. There are multiple connecting grooves 25, which are sequentially arranged on the first connecting rod 24 along the axis direction of the first connecting rod 24. The second connecting mechanism 4 includes a second connecting rod 44 and connecting flanges 45. The second connecting rod 44 is connected to the second guide wire 3. There are multiple connecting flanges 45, which are sequentially arranged on the second connecting rod 44 along the axis direction of the second connecting rod 44. The outer profile surface of the connecting flange 45 is the same as the inner profile surface of the connecting groove 25. Under the magnetic attraction, the connecting flange 45 can automatically and completely insert into the connecting groove 25, realizing the automatic and complete connection between the first connecting mechanism 2 and the second connecting mechanism 4.

[0046] Preferably, the connecting groove 25 is a semi-circular groove, and the connecting groove 25, the first connecting rod 24 and the first guide wire 1 are coaxial. The connecting flange 45 is an annular flange, and the connecting flange 45, the second connecting rod 44 and the second guide wire 3 are coaxial.

[0047] Compared with Embodiment 1, under the magnetic attraction, the connecting flange 45 can automatically and completely insert into the connecting groove 25, realizing the automatic and complete connection between the first connecting mechanism 2 and the second connecting mechanism 4, and the first guide wire 1 and the second guide wire 3 are coaxial. Pull the first guide wire 1 in the direction away from the second guide wire 3, and there is no torsion between the first connecting mechanism 2 and the second connecting mechanism 4, further preventing the first connecting mechanism 2 and the second connecting mechanism 4 from separating.

[0048] Embodiment 3:

[0049] During the guiding process of the guiding device, when the first connecting mechanism 2 and the second connecting mechanism 4 pass through the bent part of the blood vessel, they may still be separated from each other due to the external force exerted by the blood vessel on the first connecting mechanism 2 and the second connecting mechanism 4. For this reason, as Figure 4 shown, on the basis of Embodiment 2, Embodiment 3 improves the first connecting mechanism 2 so that the first connecting mechanism 2 can completely wrap the second connecting mechanism 4, preventing the first connecting mechanism 2 and the second connecting mechanism 4 from separating.

[0050] Preferably, as Figure 4 and Figure 5 shown, the first connecting mechanism 2 of this embodiment includes multiple clamping jaws. The multiple clamping jaws are used to clamp the second connecting mechanism 4. The second connecting mechanism 4 is a magnetic body.

[0051] Preferably, the multiple clamping jaws are circumferentially evenly distributed at one end of the first guide wire 1.

[0052] Preferably, the jaw includes a traction rod 26 and a clamping block 27. The two ends of the traction rod 26 are respectively connected to the clamping block 27 and the first guide wire 1. The traction rod 26 is used to radially deviate the clamping block 27 from the axis of the first guide wire 1. The clamping block 27 is an iron clamping block. A semi-circular groove is provided on the clamping block 27, and the outer profile surface of the connecting flange 45 is the same as the inner profile surface of the semi-circular groove. During the connection process between the first connection mechanism 2 and the second connection mechanism 4, under the magnetic attraction, the connecting flange 45 can be automatically and completely connected to the semi-circular groove. The second connection mechanism 4 only needs to connect to one of the multiple jaws to establish a guide wire guiding path, reducing the operation difficulty of connecting the first guiding unit and the second guiding unit, shortening the operation time, and improving the operation success rate.

[0053] Preferably, the guiding device of this embodiment further includes a sheath tube unit 5. The sheath tube unit 5 is used to push the jaws so that all the jaws can be connected to the second connection mechanism 4. The first connection mechanism 2 can completely wrap the second connection mechanism 4, enhancing the connection firmness between the first connection mechanism 2 and the second connection mechanism 4.

[0054] Preferably, as Figure 5 shown, the sheath tube unit 5 includes a tube body 51. The tube body 51 is sleeved on the first guiding unit. After the second connection mechanism 4 is connected to one of the jaws, pushing the tube body 51 in the direction of the second connection mechanism 4, the end of the tube body 51 can be connected to the traction rod 26. Further pushing the tube body 51, the tube body 51 pushes the clamping blocks 27 of the multiple jaws to move towards the axis direction of the tube body 51. The clamping blocks 27 of the multiple jaws can all be connected to the connecting flange 45, and the first connection mechanism 2 can completely wrap the second connection mechanism 4, preventing the first connection mechanism 2 from detaching from the second connection mechanism 4.

[0055] Preferably, the outer wall of the clamping block 27 is an arc-shaped outer wall. The clamping blocks 27 of the multiple jaws are combined to form a connecting cylinder. The connecting cylinder completely wraps the second connection mechanism 4 and has a smooth surface, reducing the resistance of the guiding device of this embodiment when passing through blood vessels.

[0056] Compared with Embodiment 2, under the magnetic attraction, the connecting flange 45 can be automatically and completely connected to the semi-circular groove. The second connection mechanism 4 only needs to connect to one of the multiple jaws to establish a guide wire guiding path, reducing the operation difficulty of connecting the first guiding unit and the second guiding unit, shortening the operation time, and improving the operation success rate; pushing the tube body 51, the tube body 51 pushes the clamping blocks 27 of the multiple jaws to move towards the axis direction of the tube body 51. The clamping blocks 27 of the multiple jaws can all be connected to the connecting flange 45, and the first connection mechanism 2 can completely wrap the second connection mechanism 4, preventing the first connection mechanism 2 from detaching from the second connection mechanism 4.

[0057] Embodiment 4:

[0058] In order to completely connect the first connecting mechanism 2 and the second connecting mechanism 4, as Figure 6 shown, on the basis of Embodiment 3, in Embodiment 4, the first connecting mechanism 2 and the second connecting mechanism 4 are further improved, a locking unit is added to lock the connection between the first connecting mechanism 2 and the second connecting mechanism 4, and further prevent the first connecting mechanism 2 and the second connecting mechanism 4 from separating.

[0059] Preferably, the locking unit includes a pulling hook, a hook groove 28 and a pulling groove 46. The hook groove 28 is arranged on the clamping block 27, the pulling groove 46 is arranged on the connecting flange 45, and the pulling hook is rotatably connected with the hook groove 28. The pulling hook is used to connect the clamping block 27 and the connecting flange 45, and in addition to magnetic attraction, further ensure that the clamping block 27 does not separate from the connecting flange 45.

[0060] Preferably, the pulling hook includes a support rod 61 and a convex block 62. One end of the support rod 61 is rotatably connected with the hook groove 28, the other end of the support rod 61 is connected with the convex block 62, and the convex block 62 can be connected with the pulling groove 46. Due to the limitation of the semi-circular groove, the connecting flange 45 can only radially separate from the clamping block 27, but at this time, due to the pulling of the support rod 61, the convex block 62 can still be connected with the pulling groove 46, thereby preventing the clamping block 27 from separating from the connecting flange 45.

[0061] Preferably, the locking unit further includes a spring 63. One end of the spring 63 is connected with the hook groove 28, the other end of the spring 63 is connected with the support rod 61, and the spring 63 is used to push the pulling hook, so that the convex block 62 is inserted into the pulling groove 46 and connected with the pulling groove 46, preventing the clamping block 27 from radially separating from the connecting flange 45.

[0062] Compared with Embodiment 3, the pulling hook is rotatably connected with the hook groove 28; the pulling hook can connect the clamping block 27 and the connecting flange 45, and in addition to magnetic attraction, further ensure that the clamping block 27 does not separate from the connecting flange 45. One end of the spring 63 is connected with the hook groove 28, the other end of the spring 63 is connected with the support rod 61, and the spring 63 is used to push the pulling hook, so that the convex block 62 is inserted into the pulling groove 46 and connected with the pulling groove 46, preventing the clamping block 27 from radially separating from the connecting flange 45.

[0063] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A guidewire guiding device for establishing an intervascular passage, characterized in that: The invention comprises a first guide unit and a second guide unit, wherein the first guide unit comprises a first guide wire (1) and a first connecting mechanism (2), and the second guide unit comprises a second guide wire (3) and a second connecting mechanism (4), wherein the first connecting mechanism (2) is arranged at the end of the first guide wire (1), and the second connecting mechanism (4) is arranged at the end of the second guide wire (3), and the first connecting mechanism (2) and the second connecting mechanism (4) are connectable to each other, thereby connecting the first guide unit and the second guide unit to each other.

2. The guidewire guiding device for establishing an intervascular passage according to claim 1, characterized in that: The first connecting mechanism (2) comprises a first base plate (21) and a first connecting tooth (22); the first base plate (21) is connected to the first guide wire (1); and the first connecting tooth (22) is arranged on the first base plate (21).

3. The guidewire guiding device for establishing an intervascular passage according to claim 2, characterized in that: A plurality of the first connecting teeth (22) are provided, and a first connecting groove (23) is formed between two adjacent first connecting teeth (22).

4. The guidewire guiding device for establishing an intervascular access according to claim 3, characterized in that: The second connecting mechanism (4) comprises a second bottom plate (41) and second connecting teeth (42); the second bottom plate (41) is connected to the second guide wire (3); and the second connecting teeth (42) are arranged on the second bottom plate (41).

5. The guidewire guiding device for establishing an intervascular passage according to claim 4, characterized in that: A plurality of the second connecting teeth (42) are provided, and a second connecting groove (43) is formed between two adjacent second connecting teeth (42); the first connecting tooth (22) can be connected to the second connecting groove (43), and the second connecting tooth (42) can be connected to the first connecting groove (23), thereby connecting the first connecting mechanism (2) and the second connecting mechanism (4).

6. The guidewire guiding device for establishing an intervascular passage according to claim 4, characterized in that: The first connecting tooth (22) and the second connecting tooth (42) have the same structure.

7. The guidewire guiding device for establishing an intervascular access according to claim 5, characterized in that: The first connecting groove (23) and the second connecting groove (43) have the same structure.

8. The guidewire guiding device for establishing an intervascular passage according to claim 1, characterized in that: The first connecting mechanism (2) comprises a first connecting rod (24) and a connecting groove (25), and the first connecting rod (24) is connected to the first guide wire (1).

9. The guidewire guiding device for establishing an intervascular access according to claim 8, characterized in that: A plurality of connecting grooves (25) are provided, and are arranged on the first connecting rod (24) in sequence along the axial direction of the first connecting rod (24).

10. The guidewire guiding device for establishing an intervascular passage according to claim 8, characterized in that: The second connecting mechanism (4) comprises a second connecting rod (44) and a connecting flange (45), the second connecting rod (44) is connected to the second guide wire (3), and a plurality of connecting flanges (45) are provided, and are arranged on the second connecting rod (44) in sequence along the axial direction of the second connecting rod (44).

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