Occluded blood vessel recanalization intervention device based on cooperative butt joint of double catheters and guide wires

Abstract

The invention relates to an occluded blood vessel recanalization intervention device based on cooperative butt joint of double catheters and guide wires, a first suite comprises a first catheter, and a first guide wire or a third guide wire is inserted into the first catheter; a magnet ring is arranged at the end of the first catheter, and the inner diameter of the magnet ring is larger than or equal to the outer diameter of the first guide wire. Or the end part of the third guide wire is provided with a magnet ring, and the outer diameter of the magnet ring is smaller than the inner diameter of the first catheter; the second suite comprises a second catheter and a second guide wire located in the second catheter; the end part of the second catheter is provided with a deflection structure which can attract the magnet ring, and the deflection structure enables the working end of the second guide wire penetrating through the deflection structure to deflect by an angle and face the port of the first catheter under the attraction action of the magnet ring; and / or, the working end of the second guide wire is provided with a metal block which can attract the magnet ring, and the outer diameter of the metal block is smaller than or equal to the inner diameter of the second guide wire. The device has the beneficial effects that occluded blood vessels are easy to revascularize, and the success probability of operation opening is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an interventional device for recanalizing occluded blood vessels based on the coordinated docking of double catheters and guidewires. Background Art

[0002] When performing interventional surgery for recanalization of subclavian artery occlusion, the common surgical method is: first insert a catheter guidewire kit from the femoral artery access (thigh side) under X-ray, so as to enter from one end of the blood vessel and puncture the thrombus in the blood vessel. If the thrombus cannot be completely penetrated, then insert a catheter guidewire kit from the radial artery access (arm side) under X-ray to enter from the other end of the blood vessel and puncture the thrombus in the blood vessel, that is, double catheter guidewires are used for coordinated docking intervention to achieve recanalization of the occluded blood vessel. This method has the following problems: For this type of surgery, since the catheter guidewire kit is too long, it is very difficult to adjust the direction of the traditional catheter guidewire kit in the blood vessel. Therefore, for some cases, the channel constructed by the catheter guidewire kit inserted through the femoral artery access in the thrombus is not easy to connect with the channel constructed by the catheter guidewire kit inserted through the radial artery access in the thrombus, that is, the two channels are staggered and cannot be opened. In this case, the operation will fail. Figure 1 This is a normal subclavian artery blood flow diagram. Figure 2 This is a diagram of subclavian artery occlusion. The left picture shows occlusion of the left subclavian artery, and the right picture shows the left subclavian artery stealing blood from the right side. Figure 3 For the traditional double-catheter guidewire kit in intravascular intervention, the traditional catheter and the guidewire end themselves do not have the ability to adjust the direction, such as Figure 4 As shown, such catheters and guidewires failed regardless of whether they were inserted through the femoral artery or through the radial artery for retrograde closure, leading to surgical failure. Furthermore, the process was overly dependent on the experience of medical staff. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an interventional device for recanalizing occluded blood vessels based on the coordinated docking of double catheters and guidewires, so as to overcome the deficiencies in the above-mentioned prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: An interventional device for recanalizing an occluded blood vessel based on the coordinated docking of two catheters and guidewires, comprising a first kit and a second kit, wherein the first kit comprises: a first catheter, a first guidewire or a third guidewire being inserted into the first catheter; A magnet ring is provided at the end of the first catheter, and the inner diameter of the magnet ring is greater than or equal to the outer diameter of the first guide wire; Alternatively, a magnet ring is provided at the end of the third guide wire, and the outer diameter of the magnet ring is smaller than the inner diameter of the first catheter; The second kit includes: a second catheter and a second guidewire in the second catheter; The end of the second catheter has a deflection structure that can be attracted to the magnetic ring. Under the attraction of the magnetic ring, the deflection structure causes the working end of the second guide wire passing through the deflection structure to deflect toward the first catheter port. And / or, the working end of the second guide wire is provided with a metal block that can be attracted to the magnet ring, and the outer diameter of the metal block is less than or equal to the inner diameter of the second catheter.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, the deflection structure includes: a deflection ring and a connector, the deflection ring is rotatably connected to the end of the second catheter via the connector, the working end of the second guide wire passes through the deflection ring, and the outer diameter of the second guide wire is less than or equal to the inner diameter of the deflection ring.

[0007] Furthermore, the connecting member includes: a fixed plate and a rotating shaft, one end of the fixed plate is fixedly connected to the end of the second catheter, and the other end of the fixed plate is located on the side of the deflection ring and is rotatably connected to the side of the deflection ring via the rotating shaft.

[0008] Furthermore, there are two fixing plates, which are located on both sides of the deflection ring at an angle of 180°. Each fixing plate is rotatably connected to the side surface of the deflection ring via a rotation axis.

[0009] Furthermore, a flat section is provided on the side surface of the deflection ring at the connection of each rotation axis.

[0010] Furthermore, the deflection structure also includes: a flexible membrane cylinder, one end of the flexible membrane cylinder is fixedly connected to the end face of the deflection ring, the other end of the flexible membrane cylinder is fixedly connected to the end face of the second catheter, the inner diameter of the flexible membrane cylinder is greater than or equal to the inner diameter of the deflection ring, the inner diameter of the flexible membrane cylinder is greater than or equal to the inner diameter of the second catheter, and the second guide wire is in the flexible membrane cylinder.

[0011] Furthermore, the deflection structure also includes: an elastic component, an elastic component is arranged at the upper end and / or lower end of the deflection ring, one end of the elastic component is fixedly connected to the end face of the second catheter, and the other end of the elastic component is abutted against or fixedly connected to the deflection ring, and the elastic component is used to make the deflection ring parallel to the end face of the second catheter when the deflection ring is not under the suction force of the magnet ring.

[0012] Furthermore, the peripheries of the magnet ring, the elastic component, the deflection ring, the flexible membrane cylinder and the fixing plate are provided with a hydrophilic coating for reducing the passage resistance of the magnetic component in the blood vessel.

[0013] Furthermore, there are two elastic components, which are respectively located at the upper and lower ends of the deflection ring.

[0014] Furthermore, the elastic member is a spring.

[0015] The beneficial effect of the present invention is that the device can make the channel constructed by the first set inserted through the femoral artery access in the thrombus easily connected with the channel constructed by the second set inserted through the radial artery access in the thrombus, thereby realizing the recanalization intervention of the occluded blood vessel with coordinated docking of two catheters and guidewires, effectively improving the success rate of the surgical recanalization, reducing the dependence on the experience of medical staff, and at the same time shortening the operation time and reducing the harm to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a normal subclavian artery blood flow diagram; Figure 2 This is a diagram of subclavian artery occlusion; Figure 3 This is a diagram of a traditional dual-catheter guidewire set for intravascular intervention; Figure 4 Figure 2: Interventions via the femoral artery and radial artery both failed. Figure 5 This is the first structure of the occluded blood vessel recanalization interventional device based on the coordinated docking of double catheters and guidewires in the present invention. Figure 1 ; Figure 6 This is the first structure of the occluded blood vessel recanalization interventional device based on the coordinated docking of double catheters and guidewires in the present invention. Figure 2 ; Figure 7 The figure is an assembly drawing of the second kit and the deflection structure; Figure 8 This is a second structural diagram of the occluded blood vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires in the present invention; Figure 9 This is a third structural diagram of the occluded blood vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires in the present invention; Figure 10 This is a fourth structural diagram of the occluded blood vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires in the present invention; Figure 11 This is a fifth structural diagram of the occluded blood vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires in the present invention; Figure 12 This is a sixth structural diagram of the occluded blood vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires in the present invention; Figure 13 This is a schematic diagram of the first occluded vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires, when constructing a channel in a vascular thrombus; Figure 14 This is a schematic diagram of the second occluded vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires when constructing a channel in a vascular thrombus; Figure 15This is a schematic diagram of the third occluded vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires when constructing a channel in a vascular thrombus; Figure 16 for Figure 15 The first and second suites are close to each other; Figure 17 for Figure 15 A structural diagram showing the guidewire in the second set entering the catheter in the first set; Figure 18 This is a schematic diagram of the fourth occluded vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires when constructing a channel in a vascular thrombus; Figure 19 This is a schematic diagram of the fifth occluded vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires when constructing a channel in a vascular thrombus; Figure 20 This is a schematic diagram of the sixth occluded vascular recanalization interventional device based on the coordinated docking of two catheters and guidewires when constructing a channel in a vascular thrombus.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. First kit, 110. First catheter, 120. First guide wire, 130. Third guide wire, 2. Second kit, 210. Second catheter, 220. Second guide wire, 3. Magnet ring, 4. Deflection structure, 410. Deflection ring, 411. Flat surface, 420. Connector, 421. Fixing plate, 422. Rotating shaft, 430. Flexible membrane cylinder, 440. Elastic component, 5. Metal block. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] Example 1 like Figures 5 to 12 As shown, an interventional device for recanalizing an occluded blood vessel based on coordinated docking of two catheters and guidewires comprises a first set 1 and a second set 2. During use, the first set 1 is first inserted from the femoral artery access under X-ray, and then the second set 2 is inserted from the radial artery access under X-ray. The first set 1 and the second set 2 are coordinated and docked to construct a channel within the thrombus that penetrates the entire thrombus, thereby achieving recanalization of the occluded blood vessel and facilitating subsequent thrombus removal. The first kit 1 includes: a first catheter 110, a first guide wire 120 or a third guide wire 130 is inserted into the first catheter 110, that is, when in use, only the first guide wire 120 is in the first catheter 110, or the third guide wire 130 is in the first catheter 110, and the first guide wire 120 and the third guide wire 130 are not in the first catheter 110 at the same time, the outer diameter of the first guide wire 120 is equivalent to the inner diameter of the first catheter 110, and the outer diameter of the third guide wire 130 is equivalent to the inner diameter of the first catheter 110, that is, it remains unchanged with the prior art, and the structure shown in the drawings is only for describing the two The assembly relationship between the two is not very different in size. When the first guide wire 120 is in the first catheter 110, the working end of the first guide wire 120 can be extended from the port of the first catheter 110 and can also be retracted into the first catheter 110; when the third guide wire 130 is in the first catheter 110, the working end of the third guide wire 130 can be extended from the port of the first catheter 110 and can also be retracted into the first catheter 110; the materials of the first catheter 110, the first guide wire 120 and the third guide wire 130 remain the same as in the prior art; A magnet ring 3 is provided at the end of the first catheter 110, and the inner diameter of the magnet ring 3 is greater than or equal to the outer diameter of the first guide wire 120. Alternatively, a magnet ring 3 is provided at the end of the third guide wire 130, and the outer diameter of the magnet ring 3 is smaller than the inner diameter of the first catheter 110. In this solution, it is assumed that the first catheter 110, the first guide wire 120, and the third guide wire 130 are not attracted to the magnet ring 3. The second kit 2 includes: a second catheter 210 and a second guide wire 220 in the second catheter 210. The working end of the second guide wire 220 can extend from the port of the second catheter 210 and can also be retracted into the second catheter 210. The outer diameter of the second guide wire 220 is equivalent to the inner diameter of the second catheter 210, that is, it remains unchanged in the prior art. The structure shown in the drawings is only to illustrate the assembly relationship between the two. There is no significant difference in size between the two. The material of the second catheter 210 and the second guide wire 220 remains unchanged in the prior art. Under this solution, it is assumed that the second catheter 210 and the second guide wire 220 are not attracted to the magnet ring 3. The end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3. Under the attraction of the magnet ring 3, the deflection structure 4 deflects the working end of the second guide wire 220 passing through it (the deflection structure 4) and points it toward the end of the first catheter 110. And / or, the working end of the second guide wire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3, the outer diameter of the metal block 5 is less than or equal to the inner diameter of the second catheter 210, and the outer diameter of the metal block 5 is less than or equal to the inner diameter of the deflection structure 4.

[0020] Regarding the above-mentioned solution, there are several methods for using the occluded blood vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires: ①. The device comprises: a first catheter 110, a first guide wire 120, a second catheter 210 and a second guide wire 220. The end of the first catheter 110 is provided with a magnet ring 3, and the end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3, such as Figure 13 As shown; The first guidewire 120 is assembled with the first catheter 110 and inserted into the blood vessel through the femoral artery under X-ray, and the thrombus in the blood vessel is punctured. If the thrombus cannot be completely penetrated, the first guidewire 120 is retracted into the first catheter 110. Then, the first guidewire 120 and the first catheter 110 are kept stationary, and a second set 2 is inserted through the radial artery under X-ray to enter the blood vessel from the other end and puncture the thrombus in the blood vessel. Since the end of the first catheter 110 is provided with a magnet ring 3, and the end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3, when the second kit 2 enters the blood vessel and approaches the first kit 1, the deflection structure 4 is acted upon by the suction force of the magnet ring 3 so that the working end of the second guide wire 220 passing through it (the deflection structure 4) is deflected and directed toward the port of the first catheter 110, thereby guiding the second kit 2 to puncture in the thrombus toward the first kit 1, so that the first kit 1 and the second kit 2 can be aligned, so that the channel constructed in the thrombus by the first kit 1 inserted through the femoral artery access is easily connected to the channel constructed in the thrombus by the second kit 2 inserted through the radial artery access, thereby realizing the recanalization intervention of the occluded blood vessel with the coordinated docking of the two catheters and guidewires.

[0021] ②. The device comprises: a first catheter 110, a first guide wire 120, a third guide wire 130, a second catheter 210 and a second guide wire 220. The end of the third guide wire 130 is provided with a magnet ring 3, and the end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3, such as Figure 14 As shown; The first guidewire 120 is assembled with the first catheter 110 and inserted into the blood vessel through the femoral artery under X-ray, and the thrombus in the blood vessel is punctured. If the thrombus cannot be completely penetrated, the first catheter 110 is kept stationary and the first guidewire 120 is withdrawn from the first catheter 110. Then, a third guidewire 130 is inserted. The end of the third guidewire 130 has a magnet ring 3. The end of the third guidewire 130, carrying the magnet ring 3, is moved to the end port of the first catheter 110, and the third guidewire 130 and the first catheter 110 are kept stationary. Then, a second set 2 is inserted through the radial artery under X-ray, so as to enter the blood vessel from the other end and puncture the thrombus in the blood vessel. Since the end of the third guidewire 130 is provided with a magnet ring 3, and the end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3, when the second kit 2 enters the blood vessel and approaches the first kit 1, the end of the third guidewire 130 carries the magnet ring 3 and reciprocates from the first catheter 110. Under the action of the suction force of the magnet ring 3, the deflection structure 4 deflects the working end of the second guidewire 220 passing through it (the deflection structure 4) and faces the port of the first catheter 110, thereby guiding the second kit 2 to puncture in the thrombus toward the first kit 1, so that the first kit 1 and the second kit 2 can be kissed, so that the channel constructed in the thrombus by the first kit 1 inserted through the femoral artery access is easy to be connected with the channel constructed in the thrombus by the second kit 2 inserted through the radial artery access, thereby realizing the recanalization intervention of the occluded blood vessel with coordinated docking of the double catheter guidewires.

[0022] ③. The device comprises: a first catheter 110, a first guide wire 120, a third guide wire 130, a second catheter 210 and a second guide wire 220. The end of the third guide wire 130 is provided with a magnet ring 3, and the end of the second guide wire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3. Figure 15 As shown; The first guidewire 120 is assembled with the first catheter 110 and inserted into the blood vessel through the femoral artery under X-ray, and the thrombus in the blood vessel is punctured. If the thrombus cannot be completely penetrated, the first catheter 110 is kept stationary and the first guidewire 120 is withdrawn from the first catheter 110. Then, a third guidewire 130 is inserted. The end of the third guidewire 130 has a magnet ring 3. The end of the third guidewire 130, carrying the magnet ring 3, is moved to the end port of the first catheter 110, and the third guidewire 130 and the first catheter 110 are kept stationary. Then, a second set 2 is inserted through the radial artery under X-ray, so as to enter the blood vessel from the other end and puncture the thrombus in the blood vessel. Since the end of the third guide wire 130 is provided with a magnet ring 3, and the end of the second guide wire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3, when the second set 2 enters the blood vessel and approaches the first set 1, the end of the third guide wire 130 carries the magnet ring 3 and reciprocates from the first catheter 110. Figure 16 As shown in the figure, the double-headed arrows indicate that the end of the third guide wire 130 carries the magnet ring 3 and reciprocates from the first catheter 110 to extend and retract, so as to guide the second guide wire 220 to puncture the thrombus in the direction of the third guide wire 130, and allow the second guide wire 220 to carry the metal block 5 into the first catheter 110 or close to the first catheter 110, as shown in the figure. Figure 17As shown in the figure, the second guidewire 220 carries the metal block 5 into the first catheter 110, so that the channel constructed by the first kit 1 inserted through the femoral artery access in the thrombus can be easily connected with the channel constructed by the second kit 2 inserted through the radial artery access in the thrombus, thereby realizing the recanalization intervention of the occluded blood vessel with the coordinated docking of the two catheter guidewires.

[0023] ④. The device comprises: a first catheter 110, a first guide wire 120, a third guide wire 130, a second catheter 210 and a second guide wire 220. The end of the third guide wire 130 is provided with a magnet ring 3, the end of the second guide wire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3, and the end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3, such as Figure 18 As shown; The first guidewire 120 is assembled with the first catheter 110 and inserted into the blood vessel through the femoral artery under X-ray, and the thrombus in the blood vessel is punctured. If the thrombus cannot be completely penetrated, the first catheter 110 is kept stationary and the first guidewire 120 is withdrawn from the first catheter 110. Then, a third guidewire 130 is inserted. The end of the third guidewire 130 has a magnet ring 3. The end of the third guidewire 130, carrying the magnet ring 3, is moved to the end port of the first catheter 110, and the third guidewire 130 and the first catheter 110 are kept stationary. Then, a second set 2 is inserted through the radial artery under X-ray, so as to enter the blood vessel from the other end and puncture the thrombus in the blood vessel. Since the end of the third guide wire 130 is provided with a magnet ring 3, and the end of the second guide wire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3, the end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3. When the second set 2 enters the blood vessel and approaches the first set 1, the end of the third guide wire 130 carries the magnet ring 3 and retracts from the first catheter 110 to guide the second guide wire 220 to puncture the thrombus in the direction of the third guide wire 130, and the deflection structure 4 is attracted by the magnet ring 3 to move from the first catheter 110 (deflection structure 4). 4) The working end of the second guide wire 220 passing through is deflected and directed toward the port of the first catheter 110, thereby guiding the second set 2 to puncture in the thrombus toward the first set 1, so that the first set 1 and the second set 2 can be kissed, or the second guide wire 220 can carry the metal block 5 into the first catheter 110, so that the channel constructed in the thrombus by the first set 1 inserted through the femoral artery access is easy to be connected with the channel constructed in the thrombus by the second set 2 inserted through the radial artery access, thereby realizing the recanalization intervention of the occluded blood vessel with the coordinated docking of the double catheter guide wires.

[0024] ⑤. The device comprises: a first catheter 110, a first guide wire 120, a second catheter 210 and a second guide wire 220. The end of the first catheter 110 is provided with a magnet ring 3, and the end of the second guide wire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3. Figure 19 As shown; The first guidewire 120 is assembled with the first catheter 110 and inserted into the blood vessel through the femoral artery under X-ray, and the thrombus in the blood vessel is punctured. If the thrombus cannot be completely penetrated, the first guidewire 120 is retracted into the first catheter 110. Then, the first guidewire 120 and the first catheter 110 are kept stationary, and a second set 2 is inserted through the radial artery under X-ray to enter the blood vessel from the other end and puncture the thrombus in the blood vessel. Since the end of the first catheter 110 is provided with a magnet ring 3, and the end of the second guidewire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3, when the second kit 2 enters the blood vessel and approaches the first kit 1, the metal block 5 is attracted by the magnet ring 3 so that the metal block 5 (metal block 5) carries the second guidewire 220 to deflect the angle and face the port of the first catheter 110, thereby guiding the second kit 2 to puncture in the thrombus toward the first kit 1, so that the first kit 1 and the second kit 2 can be aligned, or the second guidewire 220 can be allowed to carry the metal block 5 into the first catheter 110, so that the channel constructed in the thrombus by the first kit 1 inserted through the femoral artery access is easily connected to the channel constructed in the thrombus by the second kit 2 inserted through the radial artery access, thereby realizing the recanalization intervention of the occluded blood vessel with the coordinated docking of the two catheters and guidewires.

[0025] ⑥. The device comprises: a first catheter 110, a first guide wire 120, a second catheter 210 and a second guide wire 220. The end of the first catheter 110 is provided with a magnet ring 3, the end of the second guide wire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3, and the end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3, such as Figure 20 As shown; The first guidewire 120 is assembled with the first catheter 110 and inserted into the blood vessel through the femoral artery under X-ray, and the thrombus in the blood vessel is punctured. If the thrombus cannot be completely penetrated, the first guidewire 120 is retracted into the first catheter 110. Then, the first guidewire 120 and the first catheter 110 are kept stationary, and a second set 2 is inserted through the radial artery under X-ray to enter the blood vessel from the other end and puncture the thrombus in the blood vessel. Since the end of the first catheter 110 is provided with a magnet ring 3, and the end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3, and the end of the second guidewire 220 is provided with a metal block 5 that can be attracted to the magnet ring 3, when the second kit 2 enters the blood vessel and approaches the first kit 1, the deflection structure 4 is acted upon by the suction force of the magnet ring 3 to deflect the working end of the second guidewire 220 passing through it (the deflection structure 4) and toward the port of the first catheter 110, and the metal block 5 is acted upon by the suction force of the magnet ring 3 to guide the second guidewire 220 in the thrombus toward the port of the first catheter 110, thereby guiding the second kit 2 to puncture in the thrombus toward the first kit 1, so that the first kit 1 and the second kit 2 can be aligned, so that the channel constructed in the thrombus by the first kit 1 inserted through the femoral artery access is easily connected to the channel constructed in the thrombus by the second kit 2 inserted through the radial artery access, thereby realizing the recanalization intervention of the occluded blood vessel with coordinated docking of the two catheters and guidewires.

[0026] for Figures 13 to 18 In the figure, the shaded portion represents the thrombus in the blood vessel, and the hatched area is the channel to be constructed, so that the channel constructed by the first kit 1 in the thrombus is connected to the channel constructed by the second kit 2 inserted through the radial artery access in the thrombus. The fact that the guidewire extends too long relative to the catheter in the figure is only an illustrative representation to facilitate understanding of the entire structure, and is not the case in actual operation.

[0027] In summary, this device can effectively improve the success rate of surgical opening, reduce the dependence on the experience of medical staff, shorten the operation time, and reduce the harm to patients. Since the guide wire size is too small, it is not easy to install the deflection structure 4, so the deflection structure 4 is installed at the end of the second catheter 210 to adjust the direction of the second guide wire 220, which is easier to adjust and more accurate.

[0028] Example 2 like Figure 5 、 Figure 6 、 Figure 7 As shown, this embodiment is a further improvement on the basis of embodiment 1, specifically as follows: The deflection structure 4 includes a deflection ring 410 and a connecting member 420. The deflection ring 410 is rotatably connected to the end of the second catheter 210 via the connecting member 420, and the working end of the second guide wire 220 passes through the deflection ring 410. Under this scheme, the second catheter 210 and the second guide wire 220 are not attracted to the deflection ring 410 by default. At the same time, the first catheter 110 and the first guide wire 120 are not attracted to the deflection ring 410 by default. When the deflection ring 410 is subjected to the suction force of the magnetic ring 3, the deflection ring 410 will deflect by an angle. So that the working end of the second guide wire 220 passing through it is also deflected at an angle, that is, the opening of the deflection ring 410 is directed toward the port of the first catheter 110. When the working end of the second guide wire 220 is subsequently controlled to extend from the deflection ring 410, the extending direction of the second guide wire 220 will also be toward the port of the first catheter 110. The outer diameter of the deflection ring 410 is preferably less than or equal to the outer diameter of the first catheter 110, and the inner diameter of the deflection ring 410 is preferably greater than or equal to the inner diameter of the first catheter 110. The deflection ring 410 is selected from a metal part that is attracted to the magnet.

[0029] Example 3 like Figure 5 、 Figure 6 、 Figure 7 As shown, this embodiment is a further improvement on the basis of embodiment 2, specifically as follows: The connecting piece 420 includes: a fixed plate 421 and a rotating shaft 422, wherein one end of the fixed plate 421 is fixedly connected to the end of the second tube 210, preferably the end of the fixed plate 421 is fixedly connected to the end face of the second tube 210. As for the connection method, it can be welding, or the fixed plate 421 and the second tube 210 can be integrally formed, and the other end of the fixed plate 421 is located on the side of the deflection ring 410, and the other end of the fixed plate 421 is rotatably connected to the side of the deflection ring 410 via the rotating shaft 422. Specifically, it can be: a hole is opened on the side of the deflection ring 410, and a hole is opened on the fixed plate 421, and the two ends of the rotating shaft 422 are respectively located in the hole on the deflection ring 410 and the hole on the fixed plate 421. This structure is a common rotation connection method, so it will not be described in detail here. This type of connecting piece 420 can allow the deflection ring 410 to obtain a relatively large deflection angle range, which is conducive to meeting the requirements of collaborative docking intervention.

[0030] Furthermore, there are two fixed plates 421, and the two fixed plates 421 are located on both sides of the deflection ring 410 at an angle of 180°, and each fixed plate 421 is rotatably connected to the side of the deflection ring 410 via a rotating shaft 422. Although the use of one fixed plate 421 and one rotating shaft 422 can also ensure the rotation of the deflection ring 410, the stability is not good. Therefore, two fixed plates 421 and two rotating shafts 422 are used to effectively ensure the stability of the deflection ring 410 during rotation, and to ensure the stability of the entire structure.

[0031] The side of the deflection ring 410 is provided with a flat section 411 at the connection of each rotating shaft 422, that is, each fixing plate 421 is rotatably connected to the area of ​​the deflection ring 410 having the flat section 411 via a rotating shaft 422, which is convenient for opening a hole in the deflection ring 410.

[0032] Example 4 like Figure 5 、 Figure 6 、 Figure 7 As shown, this embodiment is a further improvement on the basis of embodiment 3, specifically as follows: In order to prevent the working end of the second guide wire 220 from poking out from between the deflection ring 410 and the second catheter 210, a flexible film tube 430 can be added between the deflection ring 410 and the second catheter 210. One end of the flexible film tube 430 is fixedly connected to the end face of the deflection ring 410, and the other end of the flexible film tube 430 is fixedly connected to the end face of the second catheter 210. The inner diameter of the flexible film tube 430 is greater than or equal to the inner diameter of the deflection ring 410, and the inner diameter of the flexible film tube 430 is greater than or equal to the inner diameter of the second catheter 210, while the second guide wire 220 is in the flexible film tube 430. The arrangement of the flexible film tube 430 does not affect the rotation of the deflection ring 410.

[0033] Furthermore, the outer periphery of the flexible membrane tube 430 has a hydrophilic coating. The hydrophilic coating on the flexible membrane tube 430 is used to reduce the passage resistance of the flexible membrane tube 430 in the blood vessel. The hydrophilic coating adopts existing technology and no improvement is made in this solution. For example, it is commonly prepared by copolymerizing maleic acid with polycarbodiimide and polymethyl vinyl ether.

[0034] Example 5 like Figure 5 、 Figure 6 、 Figure 7 As shown, this embodiment is a further improvement on the basis of embodiment 3 or 4, specifically as follows: The deflection structure 4 also includes: an elastic component 440. The elastic component 440 is arranged at the upper end and / or lower end of the deflection ring 410. One end of the elastic component 440 is fixedly connected to the end face of the second conduit 210. The connection method can be welding. The other end of the elastic component 440 is against the deflection ring 410, or the other end of the elastic component 440 is fixedly connected to the deflection ring 410. Preferably, the other end of the elastic component 440 is fixedly connected to the deflection ring 410. The elastic component 440 is used to make the deflection ring 410 parallel to the end face of the second conduit 210 when the deflection ring 410 is not under the suction of the magnet ring 3, so as to prevent the outlet direction of the deflection ring 410 from being difficult to control.

[0035] The periphery of the magnet ring 3, the elastic component 440, the deflection ring 410 and the fixed plate 421 are all provided with a hydrophilic coating. The hydrophilic coating on the magnet ring 3, the elastic component 440, the deflection ring 410 and the fixed plate 421 is used to reduce the passage resistance of the magnet ring 3, the elastic component 440, the deflection ring 410 and the fixed plate 421 in the blood vessel. The hydrophilic coating adopts the existing technology and no improvement is made in this solution. For example, it is commonly prepared by using polycarbodiimide and polymethyl vinyl ether copolymerized maleic acid.

[0036] Furthermore, there are two elastic components 440, which are respectively located at the upper and lower ends of the deflection ring 410, that is, the angle between the two elastic components 440 is 180°, and the angle between each elastic component 440 and the fixed plate 421 is 90°, which can effectively ensure that the deflection ring 410 is parallel to the end face of the second guide tube 210 when the deflection ring 410 is not under the suction force of the magnet ring 3. In this embodiment, the elastic component 440 is preferably a spring, but of course other structures, such as a spring, are not excluded.

[0037] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An interventional device for recanalizing occluded blood vessels based on the coordinated docking of two catheters and guidewires, characterized in that: The invention comprises a first kit (1) and a second kit (2) that match each other, wherein the first kit (1) comprises: a first catheter (110), a first guide wire (120) or a third guide wire (130) being inserted into the first catheter (110); A magnet ring (3) is provided at the end of the first catheter (110), and the inner diameter of the magnet ring (3) is greater than or equal to the outer diameter of the first guide wire (120); Alternatively, a magnet ring (3) is provided at the end of the third guide wire (130), and the outer diameter of the magnet ring (3) is smaller than the inner diameter of the first catheter (110); The second kit (2) comprises: a second catheter (210) and a second guide wire (220) located in the second catheter (210); The end of the second catheter (210) has a deflection structure (4) that can be attracted to the magnet ring (3). Under the suction force of the magnet ring (3), the deflection structure (4) causes the working end of the second guide wire (220) passing through the second catheter (210) to deflect and face the port of the first catheter (110), so that the channel constructed in the thrombus by the first set (1) inserted through the femoral artery access is easily connected to the channel constructed in the thrombus by the second set (2) inserted through the radial artery access; The deflection structure (4) includes: a deflection ring (410), a connector (420), a flexible film cylinder (430) and an elastic component (440), the deflection ring (410) is rotatably connected to the end of the second catheter (210) via the connector (420), the working end of the second guide wire (220) passes through the deflection ring (410), the outer diameter of the second guide wire (220) is less than or equal to the inner diameter of the deflection ring (410), one end of the flexible film cylinder (430) is fixedly connected to the end face of the deflection ring (410), the other end of the flexible film cylinder (430) is fixedly connected to the end face of the second catheter (210), the inner diameter of the flexible film cylinder (430) is greater than or equal to the inner diameter of the deflection ring (410), the inner diameter of the flexible film cylinder (430) is greater than or equal to the inner diameter of the second catheter (210), and the second guide wire (220) is located in the flexible film cylinder (430); An elastic component (440) is arranged at the upper end and / or the lower end of the deflection ring (410), one end of the elastic component (440) is fixedly connected to the end face of the second conduit (210), and the other end of the elastic component (440) is abutted against or fixedly connected to the deflection ring (410), and the elastic component (440) is used to make the deflection ring (410) parallel to the end face of the second conduit (210) when the deflection ring (410) is not under the suction force of the magnet ring (3).

2. The device for recanalizing occluded blood vessels based on the coordinated docking of two catheters and guidewires according to claim 1, characterized in that: The connecting member (420) includes a fixed plate (421) and a rotating shaft (422), one end of the fixed plate (421) is fixedly connected to the end of the second conduit (210), and the other end of the fixed plate (421) is located on the side of the deflection ring (410) and is rotatably connected to the side of the deflection ring (410) via the rotating shaft (422).

3. The device for recanalizing occluded blood vessels based on the coordinated docking of two catheters and guidewires according to claim 2, characterized in that: There are two fixing plates (421), and the two fixing plates (421) are located on both sides of the deflection ring (410) at an angle of 180 degrees. Each fixing plate (421) is rotatably connected to the side of the deflection ring (410) via a rotating shaft (422).

4. The device for recanalizing occluded blood vessels based on the coordinated docking of two catheters and guidewires according to claim 3, characterized in that: The side surface of the deflection ring (410) is provided with a flat section (411) at the connection of each rotation axis (422).

5. The device for recanalizing occluded blood vessels based on the coordinated docking of two catheters and guidewires according to claim 1, characterized in that: The peripheries of the magnet ring (3), the elastic component (440), the deflection ring (410), the flexible membrane cylinder (430) and the fixing plate (421) have a hydrophilic coating for reducing the passage resistance of the magnetic component in the blood vessel.

6. The device for recanalizing an occluded blood vessel based on the coordinated docking of two catheters and guidewires according to claim 1, characterized in that: There are two elastic components (440), and the two elastic components (440) are respectively located at the upper and lower ends of the deflection ring (410).

7. The occluded blood vessel recanalization interventional device based on the coordinated docking of two catheters and guidewires according to claim 1, 5 or 6, characterized in that: The elastic component (440) is a spring.

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