An occluded blood vessel recanalization intervention device based on double-catheter guide wire cooperative docking

Abstract

The application relates to a double-catheter guide wire cooperative docking based occluded blood vessel recanalization intervention device, a first set of components comprising: a first catheter, a first guide wire or a third guide wire being inserted into the first catheter; an end of the first catheter being provided with a magnet ring, the inner diameter of the magnet ring being greater than or equal to the outer diameter of the first guide wire; or, an end of the third guide wire being provided with a magnet ring, and the outer diameter of the magnet ring being smaller than the inner diameter of the first catheter; a second set of components comprising: a second catheter and a second guide wire in the second catheter; an end of the second catheter being provided with a deflection structure capable of being attracted to the magnet ring, the deflection structure being deflected under the action of the magnetic attraction force of the magnet ring to make the working end of the second guide wire passing therethrough to be deflected at an angle and be directed towards the first catheter port; and / or the working end of the second guide wire being provided with a metal block capable of being attracted to the magnet ring, the outer diameter of the metal block being smaller than or equal to the inner diameter of the second catheter. The occluded blood vessel recanalization is easy to realize, and the operation opening success probability is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an occluded vessel recanalization intervention device based on double catheter and guide wire cooperative docking. BACKGROUND

[0002] In the performance of subclavian artery occlusion recanalization intervention surgery, the common surgical method is: first, a set of catheter and guide wire kit is inserted from the femoral artery approach (thigh side) under X-ray to enter from one end of the blood vessel and puncture the thrombus in the blood vessel. If it cannot completely penetrate the thrombus, then a set of catheter and guide wire kit is inserted from the radial artery approach (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 and guide wire cooperative docking intervention is used to realize occluded vessel recanalization. This method has the following problems: for this type of surgery, due to the excessive length of the catheter and guide wire kit, the traditional catheter and guide wire kit is very difficult to adjust the direction in the blood vessel, so for some cases, the channel constructed by the catheter and guide wire kit inserted from the femoral artery approach in the thrombus cannot be connected with the channel constructed by the catheter and guide wire kit inserted from the radial artery approach in the thrombus, that is, the two channels are staggered and cannot be opened, which will cause the failure of the surgery, such as Figure 1 is a normal subclavian artery blood flow diagram, Figure 2 is a subclavian artery occlusion diagram, the left diagram is left subclavian artery occlusion, and the right diagram is left subclavian artery stealing blood from the right side, Figure 3 is a traditional double catheter and guide wire kit intervention in the blood vessel, since the end of the traditional catheter and guide wire does not have the ability to adjust the direction itself, as shown in Figure 4 , this type of catheter and guide wire cannot be opened in reverse no matter from the femoral artery approach or from the radial artery approach, resulting in the failure of the surgery, and the process also depends too much on the experience of medical staff. SUMMARY

[0003] The technical problem to be solved by the present application is to provide an occluded vessel recanalization intervention device based on double catheter and guide wire cooperative docking to overcome the shortcomings of the prior art.

[0004] The technical solution of the present application to solve the above technical problems is as follows:

[0005] An occluded vessel recanalization intervention device based on double catheter and guide wire cooperative docking, comprising a first kit and a second kit matched with each other, the first kit comprising: a first catheter, a first guide wire or a third guide wire inserted into the first catheter;

[0006] The end of the first catheter is provided with a magnet ring, and the inner diameter of the magnet ring is greater than or equal to the outer diameter of the first guide wire;

[0007] or, the end of the third guide wire is provided with a magnet ring, and the outer diameter of the magnet ring is less than the inner diameter of the first catheter;

[0008] The second set comprises a second catheter and a second guide wire in the second catheter;

[0009] The end of the second catheter has a deflecting structure that can be attracted by the magnet ring, and the deflecting structure deflects the working end of the second guide wire passing therethrough by an angle and towards the first catheter port under the attraction of the magnet ring;

[0010] And / or, the working end of the second guide wire is provided with a metal block that can be attracted by the magnet ring, and the outer diameter of the metal block is less than or equal to the inner diameter of the second catheter.

[0011] On the basis of the above technical solutions, the application can also be improved as follows.

[0012] Further, the deflecting structure comprises a deflecting ring and a connecting piece, the deflecting ring is rotationally connected to the end of the second catheter through the connecting piece, the working end of the second guide wire passes through the deflecting ring, and the outer diameter of the second guide wire is less than or equal to the inner diameter of the deflecting ring.

[0013] Further, the connecting piece comprises a fixed plate and a rotating shaft, one end of the fixed plate is fixedly connected to the end of the second catheter, the other end of the fixed plate is located at the side of the deflecting ring and is rotationally connected to the side surface of the deflecting ring through the rotating shaft.

[0014] Further, the number of the fixed plates is two, the two fixed plates are located at the two sides of the deflecting ring with an angle of 180°, and each fixed plate is rotationally connected to the side surface of the deflecting ring through one rotating shaft.

[0015] Further, the side surface of the deflecting ring is provided with a flat surface at the connection of each rotating shaft.

[0016] Further, the deflecting structure further comprises a flexible film cylinder, one end of the flexible film cylinder is fixedly connected to the end surface of the deflecting ring, the other end of the flexible film cylinder is fixedly connected to the end surface of the second catheter, the inner diameter of the flexible film cylinder is greater than or equal to the inner diameter of the deflecting ring, the inner diameter of the flexible film cylinder is greater than or equal to the inner diameter of the second catheter, and the second guide wire is located in the flexible film cylinder.

[0017] Further, the deflecting structure further comprises an elastic component, the elastic component is arranged on the upper end and / or the lower end of the deflecting ring, one end of the elastic component is fixedly connected to the end surface of the second catheter, the other end of the elastic component is abutted or fixedly connected to the deflecting ring, and the elastic component is used to make the deflecting ring parallel to the end surface of the second catheter when the deflecting ring is not under the attraction of the magnet ring.

[0018] Further, the periphery of the magnet ring, the elastic component, the deflecting ring, the flexible film cylinder and the fixed plate has a hydrophilic coating for reducing the resistance of the magnetic member passing through the blood vessel.

[0019] Further, the number of elastic components is two, and the two elastic components are respectively located at the upper and lower ends of the deflection ring.

[0020] Further, the elastic component is a spring.

[0021] The beneficial effects of the present application are: the device can make the channel constructed in the thrombus by the first set inserted through the femoral artery approach easy to be communicated with the channel constructed in the thrombus by the second set inserted through the radial artery approach, realize the occluded blood vessel recanalization intervention based on the cooperative docking of double catheter guide wires, effectively improve the success probability of operation opening, reduce the dependence on the experience of medical staff, and also can shorten the operation time and reduce the harm to patients. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 For normal subclavian artery blood flow unobstructed diagram;

[0023] Figure 2 For subclavian artery occlusion diagram;

[0024] Figure 3 For traditional double catheter guide wire set in the blood vessel intervention diagram;

[0025] Figure 4 For both femoral artery approach intervention and radial artery approach intervention failed diagram;

[0026] Figure 5 For the first structure of the occluded blood vessel recanalization intervention device based on the cooperative docking of double catheter guide wires in the present application Figure 1 ;

[0027] Figure 6 For the first structure of the occluded blood vessel recanalization intervention device based on the cooperative docking of double catheter guide wires in the present application Figure 2 ;

[0028] Figure 7 For the assembly diagram of the second set and the deflection structure;

[0029] Figure 8 For the second structure of the occluded blood vessel recanalization intervention device based on the cooperative docking of double catheter guide wires in the present application;

[0030] Figure 9 For the third structure of the occluded blood vessel recanalization intervention device based on the cooperative docking of double catheter guide wires in the present application;

[0031] Figure 10 For the fourth structure of the occluded blood vessel recanalization intervention device based on the cooperative docking of double catheter guide wires in the present application;

[0032] Figure 11 For the fifth structure of the occluded blood vessel recanalization intervention device based on the cooperative docking of double catheter guide wires in the present application;

[0033] Figure 12 This is the sixth structural diagram of the interventional device for recanalization of occluded blood vessels based on the coordinated docking of dual catheters and guidewires in this invention;

[0034] Figure 13 This is a schematic diagram of the first interventional device for recanalizing occluded vessels based on the coordinated docking of dual catheters and guidewires when constructing a channel in a vascular thrombus.

[0035] Figure 14 This is a schematic diagram of the second type of interventional device for recanalizing occluded vessels based on the coordinated docking of dual catheters and guidewires when constructing a channel in a vascular thrombus.

[0036] Figure 15 This is a schematic diagram of the third type of interventional device for recanalizing occluded vessels based on the coordinated docking of dual catheters and guidewires when constructing a channel in a vascular thrombus.

[0037] Figure 16 for Figure 15 A close-up view of the first and second kits in the middle;

[0038] Figure 17 for Figure 15 A diagram showing the structure of the guidewire in the second kit entering the catheter in the first kit;

[0039] Figure 18 This is a schematic diagram of the fourth type of interventional device for recanalizing occluded vessels based on the coordinated docking of dual catheters and guidewires when constructing a channel in a vascular thrombus.

[0040] Figure 19 This is a schematic diagram of the fifth type of interventional device for recanalizing occluded vessels based on the coordinated docking of dual catheters and guidewires when constructing a channel in a vascular thrombus;

[0041] Figure 20 This is a schematic diagram of the sixth type of interventional device for recanalizing occluded blood vessels based on the coordinated docking of dual catheters and guidewires, when constructing a channel in a vascular thrombus.

[0042] The attached diagram lists the components represented by each number as follows:

[0043] 1. First kit, 110. First catheter, 120. First guidewire, 130. Third guidewire, 2. Second kit, 210. Second catheter, 220. Second guidewire, 3. Magnet ring, 4. Deflection structure, 410. Deflection ring, 411. Flat section, 420. Connector, 421. Fixing plate, 422. Rotating shaft, 430. Flexible membrane tube, 440. Elastic component, 5. Metal block. Detailed Implementation

[0044] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0045] Example 1

[0046] like Figures 5 to 12 As shown, an interventional device for recanalizing occluded blood vessels based on the coordinated docking of dual catheters and guidewires includes a first kit 1 and a second kit 2. During use, the first kit 1 is first inserted through the femoral artery approach under X-ray, and then the second kit 2 is inserted through the radial artery approach under X-ray. The first kit 1 and the second kit 2 are docked in coordination to construct a channel that runs through the entire thrombus within the thrombus, thereby achieving recanalization of the occluded blood vessel and facilitating subsequent thrombus removal.

[0047] The first kit 1 includes: a first catheter 110, into which either a first guidewire 120 or a third guidewire 130 is inserted. That is, in application, only the first guidewire 120 or the third guidewire 130 is located within the first catheter 110; neither the first guidewire 120 nor the third guidewire 130 is simultaneously located within the first catheter 110. The outer diameter of the first guidewire 120 is approximately equal to the inner diameter of the first catheter 110, and the outer diameter of the third guidewire 130 is approximately equal to the inner diameter of the first catheter 110. This design remains unchanged from the prior art. The structures shown in the accompanying drawings are merely for illustrative purposes. Regarding the assembly relationship, the dimensions of the two are not significantly different. When the first guidewire 120 is inside the first conduit 110, the working end of the first guidewire 120 can extend out from the port of the first conduit 110, and the working end of the first guidewire 120 can also retract into the first conduit 110. When the third guidewire 130 is inside the first conduit 110, the working end of the third guidewire 130 can extend out from the port of the first conduit 110, and the working end of the third guidewire 130 can also retract into the first conduit 110. The materials of the first conduit 110, the first guidewire 120, and the third guidewire 130 remain unchanged from the existing technology.

[0048] The end of the first conduit 110 is provided with a magnet ring 3, the inner diameter of the magnet ring 3 is greater than or equal to the outer diameter of the first guide wire 120, or the end of the third guide wire 130 is provided with a magnet ring 3, and the outer diameter of the magnet ring 3 is smaller than the inner diameter of the first conduit 110; under this scheme, it is assumed that the first conduit 110, the first guide wire 120 and the third guide wire 130 are not attracted to the magnet ring 3.

[0049] The second kit 2 comprises 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 be extended from the port of the second catheter 210, and the working end of the second guide wire 220 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 as in the prior art, the structure shown in the figure is only to express the assembly relationship of the two, and the size difference between the two is not large, and the materials of the second catheter 210 and the second guide wire 220 remain unchanged as in the prior art, and in this scheme, it is defaulted that the second catheter 210 and the second guide wire 220 are not attracted to the magnet ring 3.

[0050] The end of the second catheter 210 has a deflection structure 4 that can be attracted to the magnet ring 3, and the deflection structure 4 is deflected under the action of the magnetic force of the magnet ring 3 to make the working end of the second guide wire 220 passing through it (the deflection structure 4) deflection angle and towards the port of the first catheter 110;

[0051] 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.

[0052] For the above scheme, the use method of the occluded blood vessel recanalization intervention device based on the double-catheter guide wire cooperative docking exists the following several situations:

[0053] ①, the device contains: the first catheter 110, the first guide wire 120, the second catheter 210 and the 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, as shown in Figure 13 ;

[0054] Assemble and combine the first guide wire 120 and the first catheter 110, and insert into the blood vessel from the femoral artery approach under X-ray, and puncture the thrombus in the blood vessel; if the thrombus cannot be completely penetrated, then the first guide wire 120 is retracted into the first catheter 110, and then the first guide wire 120 and the first catheter 110 are kept still, and then a second kit 2 is inserted from the radial artery approach under X-ray to enter from the other end of the blood vessel and puncture the thrombus in the blood vessel;

[0055] When the second set 2 enters the blood vessel near the first set 1, the deflection structure 4 at the end of the second catheter 210 is attracted by the magnet ring 3 at the end of the first catheter 110, so that the working end of the second guide wire 220 passing through the deflection structure 4 is deflected at an angle and directed towards the port at the end of the first catheter 110, thereby guiding the second set 2 to puncture the thrombus in the direction of the first set 1, so that the first set 1 and the second set 2 are in close contact, and the channel formed by the first set 1 inserted through the femoral artery is easily connected to the channel formed by the second set 2 inserted through the radial artery, thereby realizing the occluded vessel recanalization intervention of the double-catheter guide wire cooperative docking.

[0056] 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, as shown in Figure 14 ;

[0057] The first guide wire 120 and the first catheter 110 are assembled and inserted into the blood vessel from 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 guide wire 120 is pulled out of the first catheter 110, then the third guide wire 130 is inserted, the end of the third guide wire 130 has a magnet ring 3, the end of the third guide wire 130 carrying the magnet ring 3 is moved to the end port of the first catheter 110, and the third guide wire 130 and the first catheter 110 are kept stationary; then a second set 2 is inserted from the radial artery under X-ray to enter the other end of the blood vessel and puncture the thrombus in the blood vessel.

[0058] When the second set 2 enters the blood vessel near the first set 1, the deflection structure 4 at the end of the second catheter 210 is attracted by the magnet ring 3 at the end of the first catheter 110, so that the working end of the second guide wire 220 passing through the deflection structure 4 is deflected at an angle and directed towards the port at the end of the first catheter 110, thereby guiding the second set 2 to puncture the thrombus in the direction of the first set 1, so that the first set 1 and the second set 2 are in close contact, and the channel formed by the first set 1 inserted through the femoral artery is easily connected to the channel formed by the second set 2 inserted through the radial artery, thereby realizing the occluded vessel recanalization intervention of the double-catheter guide wire cooperative docking.

[0059] ③ The device includes: a first conduit 110, a first guide wire 120, a third guide wire 130, a second conduit 210, and a second guide wire 220. The end of the third guide wire 130 is provided with a magnetic ring 3, and the end of the second guide wire 220 is provided with a metal block 5 that can attract the magnetic ring 3. Figure 15 As shown;

[0060] The first guidewire 120 is assembled with the first catheter 110 and inserted into the blood vessel through the femoral artery approach under X-ray to puncture the thrombus in the blood vessel. If the thrombus cannot be completely penetrated, the first catheter 110 is kept still, and the first guidewire 120 is withdrawn from the first catheter 110. Then, the third guidewire 130 is inserted. The end of the third guidewire 130 has a magnetic ring 3. The end of the third guidewire 130 carrying the magnetic 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 still. Then, under X-ray, a second set of kits 2 is inserted through the radial artery approach to enter from the other end of the blood vessel and puncture the thrombus in the blood vessel.

[0061] Because the end of the third guidewire 130 is provided with a magnetic ring 3, and the end of the second guidewire 220 is provided with a metal block 5 that can attract the magnetic ring 3, when the second assembly 2 enters the blood vessel and approaches the first assembly 1, the end of the third guidewire 130 carrying the magnetic ring 3 reciprocates by extending and retracting from the first catheter 110, specifically as follows: Figure 16 As shown in the diagram, the double arrows indicate that the third guidewire 130, with its magnetic ring 3 at its end, reciprocates as it extends and retracts from the first catheter 110. This guidewire guides the second guidewire 220 to puncture the thrombus towards the third guidewire 130, allowing the second guidewire 220 to carry the metal block 5 into or near the first catheter 110. Specifically... Figure 17 As shown in the figure, the second guidewire 220 carries the metal block 5 into the first catheter 110, making it easy for the channel constructed by the first kit 1 inserted through the femoral artery approach within the thrombus to communicate with the channel constructed by the second kit 2 inserted through the radial artery approach within the thrombus, thereby realizing the interventional recanalization of the occluded vessel through the coordinated docking of the two catheters and guidewires.

[0062] ④ The device includes: a first conduit 110, a first guide wire 120, a third guide wire 130, a second conduit 210, and a second guide wire 220. The end of the third guide wire 130 is provided with a magnetic ring 3. The end of the second guide wire 220 is provided with a metal block 5 that can attract the magnetic ring 3. The end of the second conduit 210 has a deflection structure 4 that can attract the magnetic ring 3. Figure 18 As shown;

[0063] The first guide wire 120 and the first catheter 110 are assembled and inserted into the blood vessel from the femoral artery approach under X-ray, and the thrombus in the blood vessel is punctured; if the thrombus cannot be completely penetrated, the first guide wire 120 is retracted into the first catheter 110, and then the third guide wire 130 is inserted, the end of the third guide wire 130 is provided with a magnet ring 3, the end of the third guide wire 130 carries the magnet ring 3 to move to the end port of the first catheter 110, and the third guide wire 130 and the first catheter 110 are kept stationary; then a second set of components 2 is inserted from the radial artery approach under X-ray to enter from the other end of the blood vessel and puncture the thrombus in the blood vessel;

[0064] 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, and the end of the second catheter 210 is provided with a deflection structure 4 that can be attracted to the magnet ring 3, when the second set of components 2 enters the blood vessel near the first set of components 1, the end of the third guide wire 130 carries the magnet ring 3 to reciprocate and extend and retract from the first catheter 110 to guide the second guide wire 220 to puncture in the thrombus towards the third guide wire 130, and the deflection structure 4 is deflected under the attraction of the magnet ring 3 to make the working end of the second guide wire 220 that passes through it (deflection structure 4) deflected and towards the end port of the first catheter 110, so that the second set of components 2 can be guided to puncture in the thrombus towards the first set of components 1, so that the first set of components 1 and the second set of components 2 can be realized to kiss, or realized to let the second guide wire 220 carry the metal block 5 into the first catheter 110, so that the channel constructed by the first set of components 1 inserted from the femoral artery approach in the thrombus is easy to be connected with the channel constructed by the second set of components 2 inserted from the radial artery approach in the thrombus, so as to realize the occluded blood vessel recanalization intervention of the double catheter guide wire cooperative docking.

[0065] 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, as shown in Figure 19 ;

[0066] The first guide wire 120 and the first catheter 110 are assembled and inserted into the blood vessel from the femoral artery approach under X-ray, and the thrombus in the blood vessel is punctured; if the thrombus cannot be completely penetrated, the first guide wire 120 is retracted into the first catheter 110, and then the third guide wire 130 is inserted, the end of the third guide wire 130 is provided with a magnet ring 3, the end of the third guide wire 130 carries the magnet ring 3 to move to the end port of the first catheter 110, and the third guide wire 130 and the first catheter 110 are kept stationary; then a second set of components 2 is inserted from the radial artery approach under X-ray to enter from the other end of the blood vessel and puncture the thrombus in the blood vessel;

[0067] When the second set 2 enters the blood vessel near the first set 1, the metal block 5 is deflected by the magnetic ring 3 to carry the second guide wire 220 to the port of the first guide tube 110, so that the second set 2 can be guided to puncture the thrombus in the direction of the first set 1, so that the first set 1 and the second set 2 realize the kiss, or the second guide wire 220 carries the metal block 5 into the first guide tube 110, so that the channel constructed by the first set 1 inserted through the femoral artery approach in the thrombus is easily connected with the channel constructed by the second set 2 inserted through the radial artery approach in the thrombus, so as to realize the occluded blood vessel recanalization intervention of the double guide tube guide wire cooperative docking.

[0068] ⑥、The device comprises: a first guide tube 110, a first guide wire 120, a second guide tube 210, and a second guide wire 220, the end of the first guide tube 110 is provided with a magnetic ring 3, the end of the second guide wire 220 is provided with a metal block 5 which can be attracted to the magnetic ring 3, and the end of the second guide tube 210 has a deflection structure 4 which can be attracted to the magnetic ring 3, as shown in Figure 20 ;

[0069] The first guide wire 120 and the first guide tube 110 are assembled and combined, and are inserted into the blood vessel from the femoral artery approach under X-ray, and the thrombus in the blood vessel is punctured; if the thrombus cannot be completely penetrated, then the first guide wire 120 is retracted into the first guide tube 110, and then the first guide wire 120 and the first guide tube 110 are kept stationary, and then a second set 2 is inserted from the radial artery approach under X-ray to enter from the other end of the blood vessel and puncture the thrombus in the blood vessel;

[0070] When the second set 2 enters the blood vessel near the first set 1, the metal block 5 is deflected by the magnetic ring 3 to carry the second guide wire 220 to the port of the first guide tube 110, so that the second set 2 can be guided to puncture the thrombus in the direction of the first set 1, so that the first set 1 and the second set 2 realize the kiss, or the second guide wire 220 carries the metal block 5 into the first guide tube 110, so that the channel constructed by the first set 1 inserted through the femoral artery approach in the thrombus is easily connected with the channel constructed by the second set 2 inserted through the radial artery approach in the thrombus, so as to realize the occluded blood vessel recanalization intervention of the double guide tube guide wire cooperative docking.

[0071] For Figures 13 to 18In the figure, the shaded part represents the thrombus in the blood vessel, and the area with the cross-section line is the channel to be constructed, so that the channel constructed by the first kit 1 in the thrombus is connected with the channel constructed by the second kit 2 inserted through the radial artery approach in the thrombus, and the guide wire protruding too much from the catheter in the figure is only an exemplary representation in order to understand the entire structure, and it is not like this in the actual operation process.

[0072] In summary, the device can effectively improve the success probability of the operation, reduce the dependence on the experience of medical personnel, shorten the operation time, and reduce the harm to the patient. Since the guide wire is too small in size, 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 orientation of the second guide wire 220, which is easier to adjust and more accurate.

[0073] Embodiment 2

[0074] As shown in Figure 5 , Figure 6 , Figure 7 , this embodiment is a further improvement based on embodiment 1, as follows:

[0075] The deflection structure 4 includes a deflection ring 410 and a connecting piece 420, the deflection ring 410 is rotationally connected to the end of the second catheter 210 through the connecting piece 420, and the working end of the second guide wire 220 passes through the deflection ring 410. In this scheme, by default, the second catheter 210 and the second guide wire 220 are not attracted to the deflection ring 410, and by default, the first catheter 110 and the first guide wire 120 are not attracted to the deflection ring 410. When the deflection ring 410 is subjected to the attraction of the magnet ring 3, the deflection ring 410 will deflect an angle, so that the working end of the second guide wire 220 passing through it will also deflect an angle, i.e. the opening of the deflection ring 410 is directed towards the port of the first catheter 110. Subsequently, when the working end of the second guide wire 220 is controlled to extend out of the deflection ring 410, the extension direction of the second guide wire 220 will also be towards 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 to be a metal piece that is attracted to the magnet.

[0076] Embodiment 3

[0077] As shown in Figure 5 , Figure 6 , Figure 7 , this embodiment is a further improvement based on embodiment 2, as follows:

[0078] The connecting piece 420 comprises a fixed plate 421 and a rotating shaft 422. One end of the fixed plate 421 is fixedly connected with the end of the second catheter 210, preferably the end of the fixed plate 421 is fixedly connected with the end surface of the second catheter 210, and the fixed mode can be welding or the fixed plate 421 can be integrally formed with the second catheter 210. The other end of the fixed plate 421 is located at the side of the deflection ring 410 and is rotatably connected with the side surface of the deflection ring 410 through the rotating shaft 422. Specifically, a hole is formed in the side surface of the deflection ring 410, a hole is formed in the fixed plate 421, and the two ends of the rotating shaft 422 are located in the holes of the deflection ring 410 and the fixed plate 421 respectively. This structure is a common rotating connection mode, and thus will not be described in detail. The connecting piece 420 of this type can allow the deflection ring 410 to have a relatively large deflection angle range, which is beneficial to meet the cooperative docking intervention requirement.

[0079] Furthermore, the number of the fixed plates 421 is two, and the two fixed plates 421 are located at the two sides of the deflection ring 410 at an angle of 180°, and each fixed plate 421 is rotatably connected with the side surface of the deflection ring 410 through a rotating shaft 422. Although one fixed plate 421 and one rotating shaft 422 can ensure the rotation of the deflection ring 410, the stability is not good. Therefore, two fixed plates 421 and two rotating shafts 422 are adopted, which effectively ensure the stability of the deflection ring 410 during rotation and the stability of the whole structure.

[0080] A flat surface 411 is arranged on the side surface of the deflection ring 410 at the connection position of each rotating shaft 422, that is, each fixed plate 421 is rotatably connected with the region of the deflection ring 410 having the flat surface 411 through a rotating shaft 422, which is beneficial to the hole formation on the deflection ring 410.

[0081] Embodiment 4

[0082] As shown in Figure 5 , Figure 6 , Figure 7 This embodiment is a further improvement on the basis of embodiment 3, and the specific improvements are as follows:

[0083] In order to prevent the working end of the second guide wire 220 from being pierced out from between the deflection ring 410 and the second catheter 210, a flexible film cylinder 430 can be additionally arranged between the deflection ring 410 and the second catheter 210. One end of the flexible film cylinder 430 is fixedly connected with the end surface of the deflection ring 410, the other end of the flexible film cylinder 430 is fixedly connected with the end surface 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. The arrangement of the flexible film cylinder 430 does not affect the rotation of the deflection ring 410.

[0084] Further, the periphery of the flexible film tube 430 has a hydrophilic coating, the hydrophilic coating on the flexible film tube 430 is used to reduce the resistance of the flexible film tube 430 in the blood vessel, the hydrophilic coating is prepared by using the prior art, and no improvement is made in the present scheme, such as commonly using polycarbodiimide and polymethyl vinyl ether copolymer maleic acid.

[0085] Example 5

[0086] As shown in Figure 5 , Figure 6 , Figure 7 The present embodiment is a further improvement based on example 3 or 4, and the specific improvements are as follows:

[0087] The deflection structure 4 further comprises: an elastic component 440, the 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 with the end face of the second catheter 210, and the connection mode can be welding, the other end of the elastic component 440 abuts against the deflection ring 410, or the other end of the elastic component 440 is fixedly connected with the deflection ring 410, and the other end of the elastic component 440 is preferably fixedly connected with 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 catheter 210 when the deflection ring 410 is not subjected to the magnetic force of the magnet ring 3, so as to avoid that the outlet direction of the deflection ring 410 is difficult to control.

[0088] The periphery of the magnet ring 3, the elastic component 440, the deflection ring 410 and the fixed plate 421 has 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 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 is prepared by using the prior art, and no improvement is made in the present scheme, such as commonly using polycarbodiimide and polymethyl vinyl ether copolymer maleic acid.

[0089] Further, the number of the elastic component 440 is two, and the two elastic components 440 are respectively located at the upper end and the lower end of the deflection ring 410, that is, the included angle between the two elastic components 440 is 180°, and the included 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 catheter 210 when the deflection ring 410 is not subjected to the magnetic force of the magnet ring 3, and the elastic component 440 in the present embodiment is preferably a spring, and of course other structures such as a spring plate are not excluded.

[0090] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that changes, modifications, substitutions and variations can be made by those skilled in the art without departing from the scope of the present application.

Claims

1. An occluded vessel recanalization intervention device based on double catheter guide wire cooperative docking, characterized in that, The application relates to a first set (1) and a second set (2) which are matched with each other, wherein the first set (1) comprises a first catheter (110) into which a first guide wire (120) or a third guide wire (130) is inserted; an end of the first catheter (110) is provided with a magnet ring (3) whose inner diameter is greater than or equal to the outer diameter of the first guide wire (120); or an end of the third guide wire (130) is provided with a magnet ring (3) and the outer diameter of the magnet ring (3) is smaller than the inner diameter of the first catheter (110); the second set (2) comprises a second catheter (210) and a second guide wire (220) in the second catheter (210); an end of the second catheter (210) is provided with a deflection structure (4) which can be attracted to the magnet ring (3) and under the action of the attraction of the magnet ring (3) deflects the working end of the second guide wire (220) passing therethrough by a certain angle and towards the port of the first catheter (110), so that the channel formed by the first set (1) inserted through the femoral artery is easily communicated with the channel formed by the second set (2) inserted through the radial artery; the deflection structure (4) comprises a deflection ring (410), a connecting piece (420), a flexible film cylinder (430) and an elastic component (440), the deflection ring (410) is rotationally connected to the end of the second catheter (210) through the connecting piece (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 arranged in the flexible film cylinder (430); the elastic component (440) is arranged on 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 catheter (210), and the other end of the elastic component (440) abuts against or is fixedly connected to the deflection ring (410), so that the deflection ring (410) is parallel to the end face of the second catheter (210) when the deflection ring (410) is not under the action of the attraction of the magnet ring (3); the connecting piece (420) comprises 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 catheter (210), and the other end of the fixed plate (421) is arranged on the side of the deflection ring (410) and rotationally connected to the side face of the deflection ring (410) through the rotating shaft (422). ​ ​ ​ ​ ​ ​ 2. The double-catheter guide wire based cooperative docking occluded vessel recanalization intervention device according to claim 1, characterized in that, ​ 3. The double-catheter guide wire based cooperative docking occluded vessel recanalization intervention device according to claim 2, characterized in that, The number of the fixed plates (421) is two, and the two fixed plates (421) are placed at the two sides of the deflection ring (410) with an angle of 180°, and each fixed plate (421) is rotatably connected with the side of the deflection ring (410) through a rotating shaft (422).

4. The double-catheter guide wire based cooperative docking occluded vessel recanalization intervention device according to claim 3, characterized in that, A flat surface (411) is arranged on the side of the deflection ring (410) at the connection of each rotating shaft (422).

5. The double-catheter guide wire based docking assisted recanalization device for occluded vessels according to claim 1, characterized in that, The periphery of the magnet ring (3), the elastic component (440), the deflection ring (410), the flexible film cylinder (430) and the fixed plate (421) is provided with a hydrophilic coating for reducing the resistance of the magnetic element in the blood vessel.

6. The double-catheter guide wire based cooperative docking occluded vessel recanalization intervention device according to claim 1, characterized in that, The number of the elastic components (440) is two, and the two elastic components (440) are respectively arranged on the upper and lower ends of the deflection ring (410).

7. The double-catheter guide wire based docking assisted occluded vessel recanalization interventional device according to claim 1 or 5 or 6, characterized in that, The elastic component (440) is a spring.

Images