Puncture guide wire and puncture system

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, and discloses a puncture guide wire and puncture system. The puncture guide wire comprises a first main body and a second main body. The first main body is arranged in a puncture needle; the second main body is arranged in a venous catheter; wherein the distal end of one of the first main body and the second main body is provided with a suction accessory, and the suction accessory is used for adsorbing and fixing the distal end of the other. When the puncture guide wire is used, the first main body can be guided to a specified position only by penetrating the puncture needle into a specified part. When the second main body enters the specified position, the distal end of the first main body and the distal end of the second main body can be automatically fixed together by the adsorption force of the suction accessory, thereby quickly completing the connection of the first main body and the second main body, effectively reducing the difficulty of capturing the guide wire, and ensuring the smooth completion of the operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to puncture guide wires and puncture systems. Background Technology

[0002] Chronic limb-threatening ischemia (CLTI) is usually the end stage of peripheral artery disease (PAD), and interventional treatment to achieve venous arterialization is an effective treatment method. In interventional treatment, the guidewire plays a role in introduction, support, opening, and exchange.

[0003] In the prior art, the puncture system includes an arterial puncture unit and a venous auxiliary unit. The guidewire of the arterial puncture unit is inserted into the artery and then into the vein. The venous auxiliary unit is inserted into the vein and used to capture the guidewire to form a connection.

[0004] During the above process, the guidewire needs to be inserted into the vein through the puncture needle. If the puncture needle does not reach the intended position, the venous auxiliary unit may not be able to capture the guidewire successfully, or the puncture needle may directly puncture the venous auxiliary unit, affecting the smooth progress of the operation. Utility Model Content

[0005] The purpose of this invention is to provide a puncture guidewire and puncture system, which solves the problem that it is difficult to capture the guidewire in the vein during puncture surgery in the prior art, which can easily affect the smooth progress of the surgery.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, this utility model provides a puncture guidewire, which includes:

[0008] The first component is inserted through the puncture needle;

[0009] The second main body is inserted into the venous catheter;

[0010] In this embodiment, one of the first and second bodies has an adsorption element at its distal end, which is used to adsorb and fix with the distal end of the other body.

[0011] Optionally, a magnetic suction element is provided at the distal end of the first body and the second body, the magnetic suction element being used to be adsorbed and fixed with the adsorption element.

[0012] Optionally, the magnetic properties of the adsorption element and the magnetic attraction element are opposite.

[0013] Optionally, one of the adsorption member or the magnetic member has a notch for insertion into the other.

[0014] Optionally, the depth of the notch is greater than the height of the adsorption element or the magnetic element.

[0015] Secondly, the puncture system is characterized by comprising:

[0016] ductus arteriosus;

[0017] A puncture needle is inserted into the arterial duct and the puncture tip is used to insert into a vein from an artery;

[0018] Intravenous catheter;

[0019] The puncture guidewire as described in any one of the first aspects.

[0020] Optionally, the arterial catheter has a first positioning portion.

[0021] Optionally, the first positioning part has a tip.

[0022] Optionally, the venous catheter has a second positioning portion.

[0023] Optionally, the arterial catheter has a puncture port on its side wall, and the puncture tip of the puncture needle passes through the puncture port.

[0024] The beneficial effects of this utility model are:

[0025] Firstly, when using this puncture guidewire, the first body can be guided to the designated position simply by inserting the puncture needle into the designated area. Once the second body enters the designated position, the distal end of the first body and the distal end of the second body can be automatically fixed together by the suction force of the suction element, thereby quickly completing the connection between the first body and the second body. This effectively reduces the difficulty of the guidewire being captured and ensures the smooth completion of the surgery.

[0026] Secondly, when this puncture system is used, the first body of the puncture guidewire is introduced into the vein from the artery by the puncture needle, and the second body is introduced into the vein by the venous catheter. The two can be attracted to each other to form an adhesive fixation at the distal end, thereby quickly capturing the guidewire, effectively reducing the risk of surgery and improving the success rate. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the arterial catheter, puncture needle and first main body of the puncture system in this embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the venous catheter and the second main body of the puncture system in an embodiment of this utility model;

[0029] Figure 3This is a schematic diagram of the arterial catheter and venous catheter of the puncture system in this embodiment of the present invention being inserted into the artery and vein respectively;

[0030] Figure 4 This is a schematic diagram of the structure of the puncture needle of the puncture system in this embodiment of the present invention, showing how it inserts from an artery into a vein.

[0031] Figure 5 This is a schematic diagram of the structure in which the first and second bodies of the puncture system are inserted in an embodiment of this utility model;

[0032] Figure 6 This is a schematic diagram of the adsorption and magnetic attraction structure of the puncture system in this embodiment of the present invention.

[0033] In the picture:

[0034] 1. First body; 2. Second body; 3. Puncture needle; 4. Intravenous catheter; 41. Second positioning part; 5. Adsorption element; 6. Arterial catheter; 61. First positioning part; 7. Magnetic element; 71. Notch; 8. Artery; 9. Vein. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] This utility model discloses a puncture guide wire and a puncture system.

[0040] Reference Figure 1 and Figure 2 The puncture guidewire includes a first body 1 and a second body 2. The first body 1 is inserted into the puncture needle 3; the second body 2 is inserted into the venous catheter 4; wherein, the distal end of one of the first body 1 and the second body 2 is provided with an adsorption element 5, which is used to adsorb and fix with the distal end of the other.

[0041] Specifically, both the first body 1 and the second body 2 are filamentous, and their manufacturing materials meet surgical requirements. The first body 1 is inserted into the puncture needle 3, which is inserted into the arterial catheter 6. The arterial catheter 6 is inserted into the artery and can guide the puncture needle 3 to the designated position. At this point, the puncture needle 3 exits the artery and pierces into the vein, thereby introducing the first body 1 into the vein. The second body 2 is inserted into the venous catheter 4, which is inserted into the vein, so that the distal end of the second body 2 is close to the distal end of the first body 1. An adsorption element 5 is provided at the distal end of either the first body 1 or the second body 2. The adsorption element 5 can be a magnetic structure or an electromagnetic structure, etc. It can attract and fix the distal end of the other, thereby forming a fixed connection between the distal ends of the first body 1 and the second body 2.

[0042] When using this puncture guidewire, simply insert the puncture needle 3 into the designated area to guide the first body 1 to the designated position. Once the second body 2 enters the designated position, the suction force of the suction element 5 can automatically fix the distal end of the first body 1 and the distal end of the second body 2 together, thereby quickly completing the connection between the first body 1 and the second body 2. This effectively reduces the difficulty of the guidewire being captured and ensures the smooth completion of the surgery.

[0043] Optionally, in the first body 1 and the second body 2, the distal end of the other body is provided with a magnetic suction element 7, which is used to be attracted and fixed with the adsorption element 5.

[0044] Specifically, taking the adsorption element 5 set at the far end of the first main body 1 as an example, a magnetic element 7 is set at the far end of the second main body 2. The magnetic element 7 is magnetic, and the adsorption element 5 can be made of a material that can be magnetically attracted, so that the magnetic element 7 and the adsorption element 5 can be adsorbed and fixed.

[0045] Optionally, the magnetic properties of the adsorption element 5 and the magnetic element 7 are opposite.

[0046] The adsorption element 5 is also made of magnetic material, and its magnetism is opposite to that of the magnetic adsorption element 7, so that when the magnetic adsorption element 7 and the adsorption element 5 are close to each other, they can be attracted and fixed together.

[0047] Optionally, in either the adsorption member 5 or the magnetic member 7, one of them has a notch 71 for the other to be inserted into.

[0048] Both the adsorption component 5 and the magnetic component 7 are block-shaped. Taking the magnetic component 7 with a notch 71 as an example, the notch 71 is made at the end of the magnetic component 7 away from the second main body 2. The notch 71 can be rectangular or other polygonal. At least part of the adsorption component 5 can be inserted into the notch 71 so that the two form an interlocking fit and are fixedly connected by magnetic attraction. It should be understood that the notch 71 can also be made on the adsorption component 5. In this case, at least part of the magnetic component 7 is inserted into the notch 71. The specific location and shape of the notch 71 can be designed according to the relative dimensions of the actual adsorption component 5 and the magnetic component 7. This utility model does not limit this.

[0049] Optionally, the depth of the notch 71 is greater than or equal to the height of the adsorption element 5 or the magnetic element 7.

[0050] When notch 71 is formed on magnetic member 7, the depth of notch 71 is greater than or equal to the height of magnetic member 5, so that the space formed by notch 71 is large enough that magnetic member 5 can be fully inserted into notch 71, thereby further improving the connection strength between magnetic member 5 and magnetic member 7. When notch 71 is formed on magnetic member 5, the depth of notch 71 is greater than or equal to the height of magnetic member 7, so that magnetic member 7 can be fully inserted into notch 71.

[0051] In one embodiment, a notch 71 is provided in the middle of the magnetic member 7, making the magnetic member 7 U-shaped. The height and width of the adsorption member 5 are equal to the depth and width of the notch 71, so that the adsorption member 5 is just inserted into the notch 71 and fits against the side wall of the notch 71.

[0052] Reference Figures 4 to 6 The puncture system includes an arterial catheter 6, a puncture needle 3, a venous catheter 4, and a puncture guidewire as described above. The puncture needle 3 is inserted into the arterial catheter 6 and its puncture end is used to insert into the vein 9 from the artery 8.

[0053] When this puncture system is used, the first body 1 of the puncture guidewire is introduced into the vein 9 from the artery 8 by the puncture needle 3, and the second body 2 is introduced into the vein 9 by the venous catheter 4. The two can form an adhesive fixation at the distal end through adsorption, thereby quickly capturing the guidewire, effectively reducing the risk of surgery and improving the success rate.

[0054] Optionally, the arterial duct 6 has a first positioning part 61.

[0055] A first positioning part 61 is provided at the distal end of the arterial duct 6. It is made of radiopaque material. The first positioning part 61 can be annular or polygonal. In this embodiment, the first positioning part 61 is conical, and its end away from the arterial duct 6 has a pointed tip.

[0056] Optionally, the venous catheter 4 has a second positioning part 41.

[0057] A second positioning part 41 is provided at the distal end of the venous catheter 4. It is also made of radiopaque material. The second positioning part 41 is annular, and an annular groove is provided on the outer wall of the venous catheter 4 to accommodate the second positioning part 41.

[0058] By setting the first positioning part 61 and the second positioning part 41, the relative positions of the arterial duct 6 and the venous duct 4 can be easily determined. When the first positioning part 61 corresponds to the second positioning part 41, it indicates that the arterial duct 6 and the venous duct 4 have been moved into place.

[0059] Optionally, the arterial catheter 6 has a puncture port on its side wall, and the puncture end of the puncture needle 3 is bent and extended to pass through the puncture port.

[0060] A puncture site is made on the side of the ductus arteriosus 6 near the distal end. The puncture tip of the puncture needle 3 can pass through the puncture site and puncture the arterial wall and the venous wall to puncture the vein 9. The specific bending degree of the puncture tip of the puncture needle 3 can be designed according to the actual puncture requirements. This utility model does not limit it.

[0061] Reference Figures 4 to 6 In use, the puncture system involves first inserting the arterial catheter 6 and the venous catheter 4 into the artery 8 and vein 9 respectively, aligning the first positioning part 61 with the second positioning part 41. Then, the puncture needle 3 is inserted into the arterial catheter 6, and the puncture tip of the needle 3 is inserted into the vein 9. The first body 1 of the guidewire is introduced into the vein 9 from the artery 8 by the puncture needle 3, while the second body 2 is inserted into the venous catheter 4. The suction member 5 and the magnetic suction member 7 are mutually attracted and connected, forming a fixed connection, thus smoothly achieving the connection between the first body 1 and the second body 2.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A puncture guidewire, characterized in that, include: The first body (1) is inserted into the puncture needle (3); The second body (2) is inserted into the venous catheter (4); In the first body (1) and the second body (2), one of them is provided with an adsorption element (5) at its distal end, and the adsorption element (5) is used to adsorb and fix with the distal end of the other body.

2. The puncture guidewire according to claim 1, characterized in that, In the first body (1) and the second body (2), a magnetic suction element (7) is provided at the distal end of the other body, and the magnetic suction element (7) is used to be attracted and fixed with the adsorption element (5).

3. The puncture guidewire according to claim 2, characterized in that, The magnetic adsorption element (5) and the magnetic adsorption element (7) have opposite magnetic properties.

4. The puncture guidewire according to claim 2, characterized in that, In the adsorption member (5) or the magnetic member (7), one of them has a notch (71) for the other to be inserted.

5. The puncture guidewire according to claim 4, characterized in that, The depth of the notch (71) is greater than the height of the adsorption member (5) or the magnetic member (7).

6. A puncture system, characterized in that, include: ductus arteriosus (6); A puncture needle (3) is inserted into the arterial duct (6) and the puncture end is used to insert into the vein (9) from the artery (8); Intravenous catheters (4); The puncture guidewire as described in any one of claims 1 to 5.

7. The puncture system according to claim 6, characterized in that, The arterial duct (6) has a first positioning part (61).

8. The puncture system according to claim 7, characterized in that, The first positioning part (61) has a tip.

9. The puncture system according to claim 6, characterized in that, The venous catheter (4) has a second positioning part (41).

10. The puncture system according to claim 6, characterized in that, The arterial duct (6) has a puncture port on its side wall, and the puncture end of the puncture needle (3) passes through the puncture port.

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