A catheterization needle with a built-in guide wire

Abstract

The utility model relates to the technical field of indwelling needle, concretely to an indwelling needle with built-in guide wire, which comprises a guide tube, one end of the guide tube is connected with a needle seat, one end of the needle seat is connected with a sleeve with a needle body, a needle-shaped hose is sleeved on the sleeve, a guide wire is slidably inserted into the guide tube, the guide wire is used for guiding the needle-shaped hose to be inserted into the human body, the axis of the guide wire coincides with that of the guide tube and extends into the sleeve, the design of the indwelling needle with built-in guide wire can greatly simplify the indwelling process through the accurate guidance of the built-in guide wire, medical staff only need to insert the guide wire into the guide tube and then push the needle-shaped hose into the blood vessel along the guide wire, the simplified operation steps not only greatly improve the success rate of one-time indwelling, but also enable the indwelling needle to enter the blood vessel more smoothly and stably through the accurate guidance of the built-in guide wire, thereby reducing the damage to the blood vessel wall and the thrombosis rate in the indwelling puncture process.

Description

Technical Field

[0001] This utility model relates to the field of catheter insertion needle technology, specifically a catheter insertion needle with an internal guidewire. Background Technology

[0002] In medical practice, catheter placement is a common technique in clinical diagnosis and treatment, especially in cases requiring long-term infusion, blood collection, nutritional support, or drug infusion. Traditional catheter placement methods typically rely on the experience and intuition of medical staff, completing the procedure by directly puncturing blood vessels. However, this method is not only complex and requires a high level of skill from medical staff, but its success rate is also easily affected by various factors, such as the patient's vascular condition and the medical staff's experience. Furthermore, traditional catheter placement methods are prone to damaging the blood vessel wall during the procedure, increasing the risk of thrombosis and catheter-related bloodstream infections, causing additional pain and medical risks to patients.

[0003] To address the aforementioned issues and improve the safety and success rate of catheter placement procedures, we propose a catheter placement needle with an integrated guidewire. Utility Model Content

[0004] One of the technical problems this application aims to solve is to improve the success rate of single catheter placement and significantly reduce damage to the vessel wall and the risk of thrombosis and catheter-related bloodstream infections. To address the aforementioned technical problems, this application provides a catheter insertion needle with an internal guidewire, comprising a guide tube, one end of which is connected to a needle hub, and one end of which is connected to a cannula with a needle body. A needle-shaped flexible tube is fitted onto the cannula, and a guidewire is slidably inserted into the guide tube. The guidewire is used to guide the needle-shaped flexible tube into the human body, and the axis of the guidewire coincides with that of the guide tube and extends into the cannula.

[0005] In some embodiments, a sealing cap is inserted into one end of the guide tube.

[0006] In some embodiments, one end of the needle hub has its axis coincide with the axis of the guide tube, and one end of the needle hub is tightly inserted into the inside of the guide tube.

[0007] In some embodiments, the other end of the needle hub is tightly inserted into the inside of the sleeve.

[0008] In some embodiments, the guide tube has a sliding hole, and a handle is fixedly installed at one end of the guide wire, the handle being slidably engaged in the sliding hole.

[0009] In some embodiments, a removable cleaning element is embedded inside the cannula. The cleaning element is used to absorb blood from the surface of the guidewire. The cleaning element consists of a guide shell and a cleaning column.

[0010] In some embodiments, a through hole is provided at the axial position of the cleaning column, the cleaning column is made of high-density sponge material, the cleaning column is inserted into the inside of the guide shell, and one end of the guide wire is inserted into the through hole of the cleaning column.

[0011] This utility model has at least the following beneficial effects: The design of this built-in guidewire type catheter can greatly simplify the catheter placement process by using the built-in guidewire for precise guidance. Medical staff only need to insert the guidewire into the guiding tube and then push the needle-shaped soft tube into the blood vessel along the guidewire. This simplified operation not only greatly improves the success rate of one-time catheter placement, but also reduces the operational burden on medical staff, making the catheter placement process safer and faster. Furthermore, the catheter is precisely guided by the built-in guidewire, allowing it to enter the blood vessel more smoothly and steadily, reducing damage to the blood vessel wall and thus lowering the thrombosis rate during catheter insertion. It also significantly reduces catheter-related bloodstream infections caused by hospital-acquired infections during the catheter insertion process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a schematic diagram of the structure of the cleaning component of this utility model; Figure 5 for Figure 2 Enlarged view of the structure at point A in the middle.

[0013] In the diagram: 1. Guide tube; 2. Needle seat; 3. Needle body; 4. Sleeve; 5. Needle-shaped flexible tube; 6. Guide wire; 7. Sealing cap; 8. Sliding hole; 9. Handle; 10. Cleaning component; 1001. Guide shell; 1002. Cleaning column. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a catheter insertion needle with built-in guide wire, including a guide tube 1, one end of the guide tube 1 is connected to a needle seat 2, one end of the needle seat 2 is connected to a sleeve 4 with a needle body 3, a needle-shaped soft tube 5 is sleeved on the sleeve 4, and a guide wire 6 is slidably inserted into the guide tube 1. The guide wire 6 is used to guide the needle-shaped soft tube 5 into the human body, and the axis of the guide wire 6 is aligned with that of the guide tube 1 and extends into the sleeve 4.

[0016] Example 2: A sealing cap 7 is inserted into one end of the guide tube 1. The axis of one end of the needle seat 2 coincides with the axis of the guide tube 1, and one end of the needle seat 2 is tightly inserted into the inside of the guide tube 1. The other end of the needle seat 2 is tightly inserted into the inside of the sleeve 4. A sliding hole 8 is provided on the guide tube 1. A handle 9 is fixedly installed at one end of the guide wire 6. The handle 9 is slidably engaged in the sliding hole 8. It should be noted that one end of the guide tube 1 is an open structure so that the handle 9 and the guide wire 6 can be inserted into the guide tube 1. After insertion, the end of the guide tube 1 can be sealed by the sealing cap 7. Furthermore, the guide tube 1, needle seat 2, and sleeve 4 of this insertion needle are all made of plastic, which can reduce the cost expenditure of the manufacturer in the manufacturing process.

[0017] Example 3: A removable cleaning component 10 is embedded inside the cannula 4. The cleaning component 10 is used to absorb blood on the surface of the guidewire 6. The cleaning component 10 consists of a guide shell 1001 and a cleaning post 1002. A through hole is opened at the axial position of the cleaning post 1002. The cleaning post 1002 is made of high-density sponge material and is inserted into the guide shell 1001. One end of the guidewire 6 is inserted into the through hole of the cleaning post 1002. It should be noted that after the needle hub 2, guide tube 1, and guidewire 6 are installed... At this time, the cannula 4 with the needle body 3 is placed on the other end of the needle hub 2. A cleaning component 10 is inserted into the axial position inside the cannula 4, and the cleaning component 10 can be disassembled. The guide shell 1001 of the cleaning component 10 and the cannula 4 are both made of transparent plastic. When the cannula 4 is placed on the needle hub 2, the medical staff can insert one end of the guide wire 6 into the through hole in the cleaning column 1002 so that the axis of the guide wire 6 coincides with that of the needle body 3. After the cannula 4 is assembled, the patient's skin can be punctured through the needle body 3.

[0018] In use, after the device is assembled, the needle body 3 should be inside the needle-shaped structure of the needle-shaped tubing 5, with the piercing tip of the needle body 3 located at the front end of the needle-shaped tubing 5. When inserting the catheter into the patient's skin, the doctor holds the device with their right / left hand and inserts the needle body 3 into the patient's blood vessel. At this time, the front end of the needle-shaped tubing 5 extends into the patient's blood vessel along with the insertion of the needle body 3. To improve the speed and success rate of catheter insertion, the doctor pushes the handle 9 inside the guide tube 1 with their left / right hand, thereby allowing the guide wire 6 to gradually extend into the patient's blood vessel along the inside of the needle body 3 and extend along the blood vessel. At this time, the doctor's right / left hand remains stable, and then gradually pushes the needle... The needle-shaped flexible tube 5 extends into the patient's blood vessel, thereby improving the stability of the catheter placement under the guidance of the guidewire 6. When the needle-shaped flexible tube 5 is inserted into the patient's blood vessel, the doctor pulls the needle body 3 and the guidewire 6 out of the patient's blood vessel, thus completing the installation of the needle-shaped flexible tube 5. In addition, the design of this catheter significantly reduces catheter-related bloodstream infections caused by hospital-acquired infections during the catheter placement process. In traditional catheter placement methods, due to the complexity of the operation and the difficulty in completely avoiding contact with the external environment, there is a high risk of infection. However, this catheter placement method, guided by the built-in guidewire 6, reduces direct contact with the external environment, thereby effectively reducing the possibility of infection.

[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A cannulation needle with an internal guide wire, comprising a guide tube (1), one end of which is connected to a needle seat (2), one end of which is connected to a sleeve (4) with a needle body (3), and a needle-shaped flexible tube (5) sleeved on the sleeve (4), characterized in that: A guide wire (6) is slidably inserted into the guide tube (1). The guide wire (6) is used to guide the needle-shaped flexible tube (5) into the human body. The axis of the guide wire (6) is aligned with that of the guide tube (1) and extends into the sleeve (4).

2. The catheter insertion needle with built-in guidewire according to claim 1, characterized in that: A sealing cap (7) is inserted into one end of the guide tube (1).

3. The catheter insertion needle with built-in guidewire according to claim 1, characterized in that: One end of the needle seat (2) coincides with the axis of the guide tube (1), and one end of the needle seat (2) is tightly inserted into the guide tube (1).

4. The catheter insertion needle with built-in guidewire according to claim 3, characterized in that: The other end of the needle seat (2) is tightly inserted into the sleeve (4).

5. The catheter insertion needle with built-in guidewire according to claim 1, characterized in that: The guide tube (1) has a sliding hole (8), and a handle (9) is fixedly installed at one end of the guide wire (6). The handle (9) is slidably engaged in the sliding hole (8).

6. The catheter insertion needle with built-in guidewire according to claim 1, characterized in that: The sleeve (4) has a removable cleaning component (10) embedded inside. The cleaning component (10) is used to absorb blood on the surface of the guide wire (6). The cleaning component (10) consists of a guide shell (1001) and a cleaning column (1002).

7. The catheter insertion needle with built-in guidewire according to claim 6, characterized in that: The cleaning column (1002) has a through hole at its axial position. The cleaning column (1002) is made of high-density sponge material. The cleaning column (1002) is inserted into the guide shell (1001). One end of the guide wire (6) is inserted into the through hole of the cleaning column (1002).

Images