CN204734805U - Needle is kept somewhere to vein with safeguard function - Google Patents

Abstract

An intravenous indwelling needle with a protective function relates to the indwelling needle in medical supplies, including a catheter base, a catheter connected to the front end of the catheter base, an isolation plug arranged inside the catheter base, and a needle tube running through the cavity of the catheter and the catheter base , the tail of the needle tube is provided with a needle seat, the needle seat is located at the tail end of the catheter seat, the needle seat is provided with a needle handle, the tail of the catheter seat is connected with a protective tube, and the protective tube is provided with a needle withdrawal groove along the tube axis, It is used to pass through the needle handle when the needle tube is pulled out. There are at least two protective pieces inside the protective tube. One end of the protective piece is connected to the inner wall of the protective tube, and the other end is inclined toward the direction of needle tube extraction, and is directed toward the protective tube. The axis of the shield extends, and the extension ends of each shield tend to gather, and a spring is arranged between the shield and the inner wall of the shield. The utility model can protect the punctured needle tube and prevent the occurrence of needle tube stabbing accidents.

Description

A kind of intravenous indwelling needle with protective function

technical field

The utility model relates to a venous indwelling needle in medical supplies, in particular to a venous indwelling needle with a protective function.

Background technique

After the venous indwelling needle is punctured, the needle tube for puncture needs to be pulled out, and only the soft catheter is left in the patient's blood vessel, so that the medicinal solution in the infusion set connected to the indwelling needle is injected into the patient's body through the indwelling needle catheter. After the existing indwelling needle is pulled out, the needle tube assembly is separated from the indwelling needle and is directly exposed to the environment. When the medical staff cleans it up, it is easy to cause a needle tube puncture accident, which increases the risk of infection. In addition, the needles of the existing indwelling needle tubes are all designed with a bevel structure, and the needle needs to be inclined upward during the puncture process, so the puncture process is limited and the puncture wound is relatively large.

Utility model content

The purpose of this utility model is to provide a kind of intravenous indwelling needle with protection function, which can protect the needle tube after puncture and prevent the occurrence of needle tube stabbing accidents.

In order to achieve the above object, the technical solution of the utility model is: a kind of intravenous indwelling needle with protective function, comprising a catheter adapter, a catheter connected to the front end of the catheter adapter, an isolation plug arranged inside the catheter adapter, and a tube that runs through the catheter and catheter adapter For the needle tube in the cavity, the tail of the needle tube is provided with a needle seat, the needle seat is located at the tail end of the catheter seat, the needle seat is provided with a needle-holding handle, the tail of the catheter seat is connected with a protective tube, and the protective tube is opened along the axial direction of the tube. There is a needle withdrawal slot for the needle handle to pass through when the needle tube is pulled out. There are at least two protective sheets inside the protective tube. One end of the protective sheet is connected to the inner wall of the protective tube, and the other end is inclined toward the direction of needle tube extraction. , and extend toward the axis of the protective tube, the extension ends of each protective sheet tend to gather, and a spring is provided between the protective sheet and the inner wall of the protective tube to make the gathered extension ends of each protective sheet Under the force of the needle base, it gradually expands, and after the needle base completely passes between the protective sheets, it returns to its original shape to block on one side of the needle base, and then completely stores the needle tube and stays inside the protective tube.

Beneficial effects: the utility model arranges a protective tube at the tail of the catheter base, so that the indwelling needle can be completely stored in the protective tube during the process of pulling out the needle tube, and the needle tube can be smoothly retracted in the protective tube through the protective sheet and the spring set in the protective tube. After the needle tube is removed, the needle tube is blocked in the protective tube to prevent the needle tube from coming out of the protective tube, so that the needle tube will not be exposed to the external environment during the entire needle pulling process and after the needle tube is discarded, effectively preventing the needle tube from being stabbed. .

Description of drawings

Fig. 1 is the structural representation of the utility model.

The marks in the figure are: 1. Catheter seat, 2. Catheter, 3. Isolation plug, 4. Needle tube, 5. Needle seat, 6. Needle holder, 7. Protective tube, 8. Protective sheet, 9. Spring, 10. Needle cap, 11, extension tube.

Detailed ways

As shown in Figure 1, an intravenous indwelling needle with a protective function includes a catheter adapter 1, a catheter 2 connected to the front end of the catheter adapter 1, an isolation plug 3 arranged inside the catheter adapter 1, and a catheter penetrating through the catheter 2 and the catheter adapter 1. The needle tube 4 in the cavity, the tail of the needle tube 4 is provided with a needle hub 5, the needle hub 5 is located at the tail end of the catheter hub 1, the needle hub 5 is provided with a needle-holding handle 6, and the tail of the catheter hub 1 is connected with a protective tube 7 , the end of the protective tube 7 away from the catheter hub 1 is closed, and the protective tube 7 is provided with a needle withdrawal groove (not shown in Fig. The groove is a strip-shaped notch groove, and the width of the groove is adapted to the thickness of the needle handle 6. The needle handle 6 protrudes from the needle withdrawal groove outside the protective tube 7. During the extraction process of the needle tube 4, hold the needle handle 6 along the The needle withdrawal slot accommodates the needle tube 4 in the protective tube 7 . There are at least two protective sheets 8 inside the protective tube 7, and the number of protective sheets 8 can be set to two or three. One end of the protective sheet 8 is connected to the inner wall of the protective tube 7, and the other end is inclined toward the direction in which the needle tube 4 is pulled out. , and extend to the axis of the protective tube 7, the extension ends of each protective sheet 8 tend to gather, and a spring 9 is provided between the protective sheet 8 and the inner wall of the protective tube to make the gathered shape The extension ends of each protective sheet are gradually opened under the force of the needle holder 5, and after the needle holder 5 completely passes between the protection sheets 8, they return to their original shape to block on one side of the needle holder 5, and then the needle tube 4 is completely accommodated. And stay in the inside of protective tube 7. Wherein, the function of the protective sheet 8 is to prevent the needle hub 5 from coming out of the protective tube 7 . The protective tube 7, the protective sheet 8 and the spring 9 can be made of medical plastic or rubber material. The protective tube 7 and the catheter adapter 1 can be threaded, buckled or inserted, so that the needle tube 4 can be completely retracted into the protective tube 7, and the protective tube 7 can be separated from the catheter adapter 1, which is convenient for patients. For infusion, the needle tube 4 is completely accommodated in the protective tube 7, so that the needle will not be exposed to the environment, and stabbing accidents are not easy to occur.

Further, the needle of the needle tube 4 is a triangular needle formed by three slopes. The triangular needle tip is sharp, the puncture resistance is small, and the blood returns quickly, which can improve the success rate of puncture. The triangular puncture needle can adapt to the operation techniques of different nurses, is easy to operate, and has a small puncture wound.

Claims (2)

1. A venous indwelling needle with protective function, including a catheter adapter (1), a catheter (2) connected to the front end of the catheter adapter (1), an isolation plug (3) arranged inside the catheter adapter (1) and a penetrating through the catheter adapter (1). The catheter (2) and the needle tube (4) in the cavity of the catheter hub (1), the needle hub (5) is arranged at the tail of the needle tube (4), the needle hub (5) is located at the tail end of the catheter hub (1), the needle hub ( 5) There is a needle holding handle (6) on it, and it is characterized in that: the tail of the catheter base (1) is connected with a protective tube (7), and the protective tube (7) is provided with a needle withdrawal groove along the tube axis, for use When the needle tube (4) is pulled out, the needle handle (6) passes through. There are at least two protective pieces (8) inside the protective tube (7). One end of the protective piece (8) is connected to the protective tube (7). On the inner wall, the other end is inclined toward the pulling out direction of the needle tube (4), and extends toward the axis of the protective tube (7). A spring (9) is provided between the walls to make the extended ends of the gathered protection sheets gradually open under the force of the needle seat (5) during the pulling out process of the needle tube (4), and the needle seat (5) ) completely passes through between the protective sheets (8) and returns to its original shape so as to be blocked on one side of the needle hub (5), and then the needle tube (4) is completely accommodated and left inside the protective tube (7). 2. The intravenous indwelling needle with protective function according to claim 1, characterized in that: the needle of the needle tube (4) is a triangular needle formed by three slopes.