A match head guide wire and a contrast catheter set having the same

Abstract

The utility model relates to medical instrument technical field, especially a match head guide wire and having its contrast medium catheter set, the utility model discloses a match head guide wire, including guide wire main part, one end of guide wire main part is equipped with the plugging structure for plugging catheter port. Advantage: simple and reasonable structure design can be in the process of radiography to the contrast medium catheter port and carry out flexible plugging or open operation, so that in different positions carry out the modelling, improve the problem of the risk of traditional guide wire radiography when using needs to go back and forth into the guide wire, the problem of low efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a match-head guidewire and an angiography catheter kit having the same. Background Technology

[0002] Coronary angiography, also known as angiography, is one of the most common minimally invasive examinations in cardiology, as it is considered the gold standard for diagnosing coronary artery disease. The procedure involves puncturing the radial or femoral artery, inserting a catheter into the coronary artery opening, and injecting contrast agent under pressure. The angiography can then be visualized under X-ray fluoroscopy. Firstly, it allows observation of the morphology and course of the coronary arteries, as well as the presence of any abnormalities. Secondly, it assesses the presence, degree, and extent of atherosclerotic lesions in the coronary arteries. Furthermore, coronary angiography provides accurate preoperative assessment and postoperative evaluation for surgical coronary artery bypass grafting and medical coronary artery stenting.

[0003] Clinically, angiography involves placing a sheath at the puncture site, then inserting a guidewire through the sheath. The guidewire travels along the artery to the heart, where an angiography catheter is then inserted. Both catheters proceed deep into the heart until they reach the coronary artery. Contrast agent is then injected through the inlet at the other end of the catheter. Because angiography may require different locations, the guidewire needs to be repeatedly inserted and removed. This process can cause backflow of contrast agent and blood through one end of the catheter, potentially forming air emboli or thrombi within the catheter lumen. When contrast agent is reinjected, the thrombus can enter the body, increasing the risk of cardiovascular and cerebrovascular diseases. Furthermore, the repeated insertion and removal of the guidewire is inefficient.

[0004] Therefore, it is necessary to develop a match-head guidewire and an angiography catheter kit containing it to overcome the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a match-head guidewire and an angiography catheter kit having the same, which effectively overcomes the defects of the prior art.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A match head guidewire includes a guidewire body, one end of which is provided with a sealing structure for sealing the catheter port.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the aforementioned sealing structure is a ball head.

[0010] Furthermore, the aforementioned sealing structure is ellipsoidal.

[0011] Furthermore, one end of the aforementioned guidewire body is integrally formed with a column whose diameter gradually increases, and the column forms the aforementioned sealing structure.

[0012] Furthermore, the guidewire body is of uniform thickness and has a diameter of 0.014-0.038 inches.

[0013] Furthermore, a first mark is provided at the other end of the aforementioned guidewire body.

[0014] Furthermore, the aforementioned first mark is an annular groove or an outwardly convex annular line.

[0015] The beneficial effects are: the structure is simple and reasonable, and it can flexibly block or open the angiography catheter port during the angiography process so as to shape it in different positions. This improves the problem of traditional guidewire angiography, which requires the guidewire to be inserted and removed back and forth, which causes risks and low efficiency.

[0016] The present invention provides an angiography catheter kit including an angiography catheter body and a match-tipped guidewire. The angiography catheter body is inserted outside the guidewire body. The two can move relative to each other until the guidewire body moves to the occlusion structure to block one end port of the angiography catheter body, or until the occlusion structure moves away from the end port of the angiography catheter body.

[0017] Based on the above technical solution, the present invention can be further improved as follows.

[0018] Furthermore, one end of the aforementioned contrast catheter body is provided with a contrast ring.

[0019] Furthermore, one end of the aforementioned angiography catheter is designed as a flared opening.

[0020] The beneficial effects are: the guidewire can be used to block or open the port of the contrast catheter, allowing for contrast imaging at different locations without worrying about contrast agent backflow or leakage. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the match head guide wire of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the match head guide wire of this utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the structure of the match head guide wire of this utility model. Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the angiography catheter kit of this utility model;

[0025] Figure 5 This is a schematic diagram of the angiography catheter port and the sealing structure in the angiography catheter kit of this utility model to achieve sealing.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Guidewire body; 2. Angiography catheter body; 11. Occlusion structure. Detailed Implementation

[0028] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] Example 1

[0030] like Figure 1 , 2 As shown in Figures 1 and 3, the match head guide wire of this embodiment includes a guide wire body 1, and one end of the guide wire body 1 is provided with a sealing structure 11 for sealing the conduit port.

[0031] In this embodiment, the match-head guidewire enters the blood vessel through the sheath at the puncture site. After reaching the target position, the angiography catheter is inserted along the guidewire body 1. After reaching the target position, contrast agent is injected through the injection port at the other end of the angiography catheter. When angiography at the target position is completed and angiography at another position is needed, the guidewire body 1 is pulled outward so that the sealing structure 11 at one end of the guidewire body 1 blocks the other end of the angiography catheter. Then, the relative positions of the two are maintained to maintain the continuous sealing state of one end of the angiography catheter. Next, the guidewire body 1 and the angiography catheter are moved to another target position. Then, the angiography catheter is kept stationary, and the guidewire body 1 is pushed inward so that the sealing structure 11 separates from the angiography catheter port. Then, the contrast agent can be injected again through the injection port at the other end of the angiography catheter. The whole process will not cause the problem of contrast agent and blood backflow (reflux). The entire match-head guidewire structure is simple and reasonable, and can flexibly block or open the angiography catheter port during the angiography process to shape it in different positions. This improves the problem of traditional guidewire angiography, which requires the guidewire to be inserted and removed back and forth, resulting in risks and low efficiency.

[0032] In this embodiment, the sealing structure 11 includes at least the following structural forms:

[0033] 1) such as Figure 1 As shown, the aforementioned sealing structure 11 is a ball head.

[0034] In scheme 1), the occlusion structure 11 adopts a ball head integrally formed with the guidewire body 1, the diameter of which is larger than the diameter of the guidewire body 1 and also larger than the diameter of one end of the angiography catheter. When it is necessary to move to another target location for angiography after the angiography is completed, the guidewire body 1 is pulled outward, so that the ball head part is embedded in one end of the angiography catheter, effectively occluding the media cavity of the angiography catheter.

[0035] 2) such as Figure 2 As shown, the aforementioned sealing structure 11 is ellipsoidal.

[0036] In scheme 2), the operation method is the same as that in scheme 1). Pulling the guidewire body 1 achieves the sealing or separation of the ellipsoidal occlusion structure 11 from one end of the angiography catheter. Because it is designed to be ellipsoidal, one end with a smaller diameter is connected to one end of the guidewire body 1. During sealing, more of the ellipsoidal part is embedded in the angiography catheter port, resulting in a better sealing effect.

[0037] 3) such as Figure 3 As shown, one end of the guidewire body 1 is integrally formed with a column whose diameter gradually increases, and the column forms the sealing structure 11.

[0038] In scheme 3), the operation method is the same as that in scheme 1) or scheme 2). Pulling the guidewire body 1 achieves the sealing or separation of the ellipsoidal occlusion structure 11 from one end of the angiography catheter. Its shape adopts a variable diameter cylindrical structure design. During the process of pulling the guidewire body 1 outward relative to the angiography catheter, this cylindrical section will partially enter the interior of one end of the angiography catheter. Then, the variable diameter design achieves effective contact sealing with the angiography catheter port. Its processing difficulty is relatively low.

[0039] In this embodiment, the guidewire body 1 has a uniform thickness and a diameter of 0.014-0.038 inches, which can meet most guidewire application needs in clinical practice.

[0040] Of course, the diameter of the guidewire body 1 can also be designed to gradually increase from one end to the other, with a maximum diameter of 0.014-0.038 inches.

[0041] In a preferred embodiment, the other end of the guidewire body 1 is provided with a first mark a.

[0042] In the above implementation scheme, the first mark is set at the other end of the guidewire body 1, which is located outside the body during the angiography process. The first mark on it can ensure whether the sealing structure 11 at one end of the guidewire body 1 is sealed with the port of the angiography catheter by changing the distance between it and the other end of the angiography catheter, thus serving as an indicator and facilitating the doctor's precise operation.

[0043] In a preferred embodiment, the first mark is a groove or a convex ring.

[0044] In the above implementation scheme, both the annular groove and the annular line are easy-to-process structures and can be identified by the naked eye. At the same time, they do not affect the insertion and guidance operation of the angiography catheter from the other end of the guidewire body 1.

[0045] Example 2

[0046] like Figure 4 As shown, the angiography catheter kit of this embodiment includes angiography catheter body 2 and match head guidewire as in embodiment 1. The angiography catheter body 2 is inserted outside the guidewire body 1. The two can move relative to each other until the guidewire body 1 moves to the blocking structure 11 to block one end port of the angiography catheter body 2, or until the blocking structure 11 moves away from one end port of the angiography catheter body 2.

[0047] In a preferred embodiment, one end of the contrast catheter body 2 is provided with a contrast ring.

[0048] In the above implementation scheme, the contrast ring is a common contrast ring structure on catheters. It can be displayed on machines such as X-ray machines after entering the body, so that doctors can accurately identify the location of one end of the contrast catheter on the machine, and the one end of the contrast catheter can accurately reach the target location for contrast imaging.

[0049] Of course, multiple contrast rings can be set and distributed at intervals along the length of the contrast catheter.

[0050] As a preferred implementation method, such as Figure 5 As shown, one end of the angiography catheter body 2 is designed as a flared opening.

[0051] In the above implementation scheme, the design of the flared opening is quite ingenious. When the angiography catheter needs to be moved to another target location for angiography after a single angiography is completed, pulling the guidewire body 1 outward can make the sealing structure 11 at one end of it embed into the flared opening, making the contact area with the inner wall of the flared opening tighter and improving the sealing effect.

[0052] In this embodiment, the angiography catheter can be an existing single-lumen angiography catheter or a multi-lumen angiography catheter.

[0053] Of course, the entire match head guidewire can be adapted to any catheter that requires a similar angiography-based occlusion procedure.

[0054] It is important to emphasize that the connector at the other end of the angiography catheter is a product of existing technology and will not be described in detail in this embodiment. The connector is provided with an angiography injection interface and an interface for the guidewire to pass through.

[0055] It should also be noted that a second mark that matches the first mark can also be set at the other end of the angiography catheter body 2. The distance between the two marks can be used to accurately determine whether the occlusion structure 11 is blocked or separated from one end of the angiography catheter.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A match head guide wire, characterized in that: It includes a guidewire body (1), one end of which is provided with a sealing structure (11) for sealing the catheter port.

2. The match head guide wire according to claim 1, characterized in that: The sealing structure (11) is a ball head.

3. The match head guide wire according to claim 1, characterized in that: The sealing structure (11) is ellipsoidal.

4. A match head guide wire according to claim 1, characterized in that: One end of the guidewire body (1) is integrally formed with a column whose diameter gradually increases, and the column forms the sealing structure (11).

5. A match head guide wire according to claim 1, characterized in that: The guidewire body (1) has a uniform thickness and a diameter of 0.014-0.038 inches.

6. A match head guide wire according to claim 1, characterized in that: The other end of the guidewire body (1) is marked with a first mark.

7. A match head guide wire according to claim 6, characterized in that: The first mark is a groove or an outwardly convex ring.

8. A contrast catheter kit, characterized in that: The device includes an angiography catheter body (2) and a match-head guidewire as described in any one of claims 1 to 7. The angiography catheter body (2) is inserted outside the guidewire body (1), and the two can move relative to each other until the guidewire body (1) moves to the occlusion structure (11) to block one end port of the angiography catheter body (2), or until the occlusion structure (11) moves away from one end port of the angiography catheter body (2).

9. A contrast catheter kit according to claim 8, characterized in that: The contrast catheter body (2) has a contrast ring at one end.

10. A contrast catheter kit according to claim 8, characterized in that: One end of the angiography catheter body (2) is designed as a flared opening.

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