Anti-falling medical guide wire

Abstract

The utility model discloses a kind of anti-falling medical guide wire, including core wire and spring-shaped winding wire wound in the periphery of core wire, the rear end of guide wire is equipped with anti-falling part, and anti-falling part is made of spring-shaped winding wire extension in the periphery of core wire, and the end of extended spring-shaped winding wire is equipped with hook part. Its flexible spring-shaped winding wire after extension and the blocking effect of hook part hook to guide wire, effectively avoid the situation that guide wire slips into patient's body due to accident in clinic, improve the security of guide wire use, reduce the psychological burden of medical staff in clinical operation process, with the advantages of low cost, simple structure, without affecting normal operation specification and use process of guide wire based on Seldinger technology, can be widely applied in various department puncture operation.

Description

Technical Field

[0001] This utility model relates to a medical product, and more particularly to a medical guidewire used in clinical puncture procedures that prevents the guidewire from accidentally slipping into the patient's body, belonging to the field of medical supplies. Background Technology

[0002] In 1953, Sven Ivar Seldinger proposed the Seldinger technique for vascular puncture. Due to its simplicity, ease of operation, safety, and minimal invasiveness, it has been widely used in clinical interventional procedures both vascular and non-vascular, such as percutaneous biliary drainage, abscess aspiration, drainage tube placement, thoracentesis, paracentesis, and arteriovenous puncture. The main steps of the Seldinger technique include: directly percutaneously puncturing the blood vessel with a needle without a stylet, penetrating the anterior wall of the vessel and entering the vessel; introducing a guidewire; if necessary, introducing a dilator through the guidewire; finally, inserting a catheter through the guidewire; and after withdrawing the guidewire, the puncture and catheter placement procedure is complete. For example... Figure 1 As shown, the guide wire, which serves as the guide, consists of a core wire 1 and a spring-like coiled wire 2 wrapped around the core wire 1. The core wire 1 provides support, while the spring-like coiled wire 2 enhances the guide wire's bending performance, facilitating turning and flexible insertion. To prevent the guide wire tip from forming a sharp end that could damage human tissue, a hook-shaped design is applied to the tip, with the hook 3 pointing horizontally backward to form an obtuse angle. This ensures safety while improving the smoothness of the guide wire insertion process.

[0003] In clinical practice, existing guidewires can accurately and smoothly complete the placement of dilators and catheters, and the operation is simple and convenient. However, the rear end of the guidewire is straight. When a thin, smooth guidewire is inserted through a puncture needle, or when a dilator or catheter is inserted through the guidewire, there is a risk of the guidewire accidentally slipping into the patient's body under various operational actions and complex intraoperative conditions. Although it is required that the rear end of the guidewire remain outside the patient's body for a sufficient period of time, accidental slippage of the guidewire still occurs frequently in clinical practice, which not only increases medical risks but also brings a huge burden and pain to patients, leading to serious medical disputes.

[0004] Therefore, improving the existing guidewire structure based on Seldinger technology to enhance its performance is the main problem that this invention aims to solve. Utility Model Content

[0005] In view of the above-mentioned existing conditions and shortcomings, the present invention aims to provide a medical guidewire that can prevent the guidewire from accidentally slipping into the patient's body during the guidance process, so as to improve the safety and reliability of guidewire use in clinical practice, improve guidewire performance, and avoid such medical accidents or doctor-patient disputes.

[0006] This utility model is achieved through the following technical solution:

[0007] The anti-detachment medical guidewire includes a core wire and a spring-shaped coiled wire wrapped around the core wire. The front end of the guidewire is hook-shaped, and the rear end of the guidewire is provided with an anti-detachment part. The anti-detachment part is formed by extending the spring-shaped coiled wire around the core wire. The end of the extended spring-shaped coiled wire is provided with a hook part. The hook part has a hook length of not less than 3 cm and a hook opening of not less than 30 degrees.

[0008] A core wire is also provided inside the winding wire near the end of the hook.

[0009] The distance between the extended spring-shaped coil and the hook part shall not be less than 10 cm.

[0010] The beneficial effects of the anti-dislodgement medical guidewire described in this utility model include:

[0011] 1. Based on the existing guidewire, by setting an anti-dislodgement part at its end, and by utilizing the flexibility of the extended spring-shaped coil and the blocking effect of the hook part on the guidewire, the situation of the guidewire slipping into the patient's body due to accidental events is effectively avoided in clinical practice, thereby improving the safety of guidewire use, reducing the psychological burden of medical staff in the clinical operation process, and improving the clinical rescue process.

[0012] 2. By setting a core wire inside the winding wire near the end of the hook, the local strength of the end of the hook is improved, making the subsequent insertion of the expansion tube or catheter simpler, more convenient and flexible.

[0013] 3. The overall structure is improved based on the existing guidewire, which is low in cost and simple in structure. It will not affect the normal operation and use of guidewires based on Seldinger technology. Medical staff do not need additional training, and it is convenient and quick to use in clinical applications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the existing guidewire structure;

[0015] Figure 2 This is a schematic diagram of the structure of the anti-detachment medical guidewire described in this utility model. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 2 The present invention will be described in further detail as follows:

[0017] The anti-dislodgement medical guidewire of this invention, in addition to the existing guidewire core wire 1 and the spring-shaped winding wire 2 wrapped around the core wire 1, also includes an anti-dislodgement part 4 at the rear end of the guidewire to prevent accidental slippage into the patient's body. Specifically, the anti-dislodgement part 4 is formed by extending the spring-shaped winding wire on the original guidewire, and the end of the extended spring-shaped winding wire is provided with a hook part 5. In this example, the hook length of the hook part 5 is 4 cm, the hook opening 6 is 45 degrees, and the distance between the extended spring-shaped winding wire and the hook part is 20 cm. Since the extended spring-shaped winding wire has no core wire support, it has strong swing and poor smoothness. Combined with the blocking effect of the hook part 5, the guidewire will not slip into the patient's body due to accidental contact or operation, greatly improving the safety of guidewire use in clinical practice.

[0018] To facilitate the insertion of the dilation tube or catheter by the hook portion 5 at the rear end of the guidewire, in this example, a second core wire 6 with a length of 3 cm is also provided in the winding wire near the end of the hook portion 5 to enhance the local support strength of the winding wire at the end of the hook portion, facilitate the guidance and insertion of the dilation tube or catheter by the end of the guidewire, and improve the insertion efficiency.

[0019] In practical use, in addition to being used normally according to the Seldinger technique, the anti-dislodgement medical guidewire 4 is always kept outside the patient's body, and the hook of the hook part 5 can form an effective blocking effect, so that the anti-dislodgement medical guidewire will not accidentally slip into the patient's body, effectively avoiding the occurrence of medical accidents or doctor-patient disputes.

Claims

1. A medical guidewire designed to prevent detachment, comprising a core wire and a spring-shaped winding wire wrapped around the core wire, wherein the tip of the guidewire is hook-shaped, characterized in that, The guide wire has an anti-detachment part at its rear end. The anti-detachment part is formed by extending the spring-shaped winding around the core wire. The end of the extended spring-shaped winding has a hook part with a hook length of not less than 3 cm and a hook opening of not less than 30 degrees.

2. The anti-dislodgement medical guidewire according to claim 1, characterized in that, A core wire is also provided inside the winding wire near the end of the hook.

3. The anti-dislodgement medical guidewire according to claim 2, characterized in that, The distance between the extended spring-shaped wire and the hook portion shall not be less than 10 centimeters.

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