CN207755607U - A kind of venous detaining needle - Google Patents

Abstract

The utility model discloses a venous indwelling needle, which comprises: an extension tube, a liquid bag and an anti-backflow component; two ends of the anti-backflow component are respectively connected with the extension tube and the liquid bag; The input end is the liquid bag, and the output end of the anti-reflux component is the extension tube. When the venous indwelling needle is sealed, the liquid bag is pinched flat in a pulse manner, and then the tube clamp is closed. Because of the function of the anti-reflux component, the liquid medicine will not flow back, which simplifies the sealing operation of the venous indwelling needle and solves the problem. During the sealing process, the technical problem of liquid medicine backflow is prone to occur.

Description

a vein indwelling needle

technical field

The utility model relates to the field of medical equipment, in particular to a vein indwelling needle.

Background technique

An intravenous indwelling needle is a medical device used for multiple infusion treatments within a period of time, mainly including indwelling catheters, catheter holders, puncture needles, puncture needle holders and other components. After the medical personnel use intravenous indwelling to puncture the patient's blood vessel, the puncture needle is pulled out from the back end of the catheter adapter and the indwelling catheter, and the softer indwelling catheter is placed in the patient's blood vessel, and the patient is given continuous or intermittent infusion through the indwelling catheter .

After each intravenous indwelling needle infusion is completed, a tube locking operation is required. The most commonly used operation is the syringe pulse lock, where a syringe filled with lock fluid is directly inserted into the heparin cap of the intravenous indwelling needle, one hand pushes the syringe in pulse mode, and the other hand slowly withdraws the syringe needle from the intravenous indwelling needle The heparin cap of the needle, in this process, the movements of the two hands must be well coordinated. If the sealing operation is not done properly, the occurrence of reflux will lead to the blockage of the intravenous indwelling needle and so on.

Therefore, the tube sealing process requires the precise cooperation of two hands, which requires high operational requirements for medical staff and is prone to backflow.

Utility model content

The utility model discloses a venous indwelling needle, which solves the problem that backflow easily occurs during the tube sealing operation.

The utility model provides a venous indwelling needle, comprising: an extension tube, a liquid bag and an anti-backflow component;

Both ends of the anti-reflux component are respectively connected to the extension tube and the liquid bag;

The input end of the anti-reflux component is the liquid bag, and the output end of the anti-reflux component is the extension tube.

Further, it also includes: indwelling catheter, catheter adapter and connector;

The catheter adapter includes: a first interface and a second interface;

The indwelling catheter is connected to the first interface;

The first end of the extension tube is connected to the second interface, and the second end of the extension tube is connected to the anti-reflux component;

The first end of the liquid bag is connected to the anti-reflux component, and the second end of the liquid bag is connected to the joint for inputting medical fluid.

Further, it also includes: a puncture needle and a puncture needle holder;

The indwelling catheter is set on the puncture needle;

The tail of the puncture needle is fixed on the puncture needle seat.

Further, it also includes: pipe clamps,

The pipe clamp is arranged on the outside of the extension pipe.

Preferably, the anti-reflux component is an anti-reflux flap or a one-way valve.

Preferably, the anti-reverse valve is a one-way anti-reverse valve.

Preferably, the joint is a Y-shaped joint or a straight joint.

Preferably, the first end of the straight joint is connected to the second end of the liquid bag;

The second end of the straight connector is provided with a heparin cap.

Preferably, the first end of the Y-shaped joint is connected to the second end of the liquid bag;

The second end of the Y-shaped joint is provided with a heparin cap;

The third end of the Y-joint is provided with a white end cap.

Preferably, a seal is embedded in the cavity of the heparin cap.

It can be seen from the above technical solutions that the utility model provides a venous indwelling needle, including: including: an extension tube, a liquid bag and an anti-reflux component; the two ends of the anti-reflux component are connected with the extension tube and the The liquid bag is connected; the input end of the anti-reflux component is the liquid bag, and the output end of the anti-reflux component is the extension tube. When the venous indwelling needle is sealed, the liquid bag is pinched flat in a pulse manner, and then the tube clamp is closed. Because of the function of the anti-reflux component, the liquid medicine will not flow back, which simplifies the sealing operation of the venous indwelling needle and solves the problem. During the tube sealing process, the technical problem of liquid medicine backflow is prone to occur.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is a schematic structural view of a venous indwelling needle provided in an embodiment of the present invention;

Fig. 2 is a schematic structural view of an intravenous indwelling needle provided in an embodiment of the present invention in a state of infusion;

Fig. 3 is a schematic structural view of a venous indwelling needle provided in an embodiment of the present invention after being sealed;

Illustration, 1. Puncture needle; 2. Indwelling catheter; 3. Puncture needle seat; 4. Catheter seat; 5. Extension tube; 6. Tube clip; .

Detailed ways

The embodiment of the utility model discloses a venous indwelling needle, which solves the problems that the tube sealing operation has high requirements for medical personnel and improper tube sealing operation will cause the venous indwelling needle to block the tube and the like.

Please refer to FIG. 1 , which is a schematic structural diagram of an intravenous indwelling needle provided in an embodiment of the present invention. A venous indwelling needle provided by an embodiment of the utility model includes: an extension tube 5, a liquid bag 8 and an anti-reflux component;

The two ends of the anti-reflux component are respectively connected with the extension tube 5 and the liquid bag 8;

The input end of the anti-reflux component is the liquid bag 8 , and the output end of the anti-reflux component is the extension tube 5 .

The liquid sac 8 is in a state of naturally bulging.

In this embodiment, the intravenous indwelling needle also includes: an indwelling catheter 2, a catheter adapter 4, an extension tube 5, a tube clip 6 and a connector;

The catheter adapter 4 includes: a first interface and a second interface;

The indwelling catheter 2 is connected to the first interface;

The first end of the extension tube 5 is connected to the second interface, and the second end of the extension tube 5 is connected to the anti-reflux component;

The first end of the liquid bag 8 is connected to the anti-reflux component, and the second end of the liquid bag 8 is connected to a joint for inputting medical fluid.

The venous indwelling needle also includes: a puncture needle 1 and a puncture needle seat 3;

The indwelling catheter 2 is set on the puncture needle 1;

The tail of the puncture needle 1 is fixed on the puncture needle holder 3 .

The intravenous indwelling needle also includes a tube clip,

The pipe clamp 6 is arranged on the outside of the extension pipe 5, and the pipe clamp 6 is in an open state.

The anti-reflux component is an anti-reflux valve or a one-way valve.

In this embodiment, the anti-backflow component is the anti-backflow valve 7, and the anti-backflow valve 7 is a one-way anti-backflow valve, and its direction is toward the extension tube 5, preventing the medicinal liquid from flowing from the second end of the extension tube 5 to the first end of the liquid bag 8 .

The joints are Y-joints or straight joints.

Wherein, the first end of the straight joint is connected with the second end of the fluid bag 8;

The second end of the straight connector is provided with a heparin cap.

Wherein, the first end of the Y-shaped joint is connected with the second end of the liquid bag 8;

The second end of the Y-shaped connector is provided with a heparin cap;

The third end of the Y-connector is provided with a white end cap.

In this embodiment, the joint is a straight joint, and the first end of the straight joint is connected to the second end of the liquid bag 8; the second end of the straight joint is provided with a heparin cap 9.

A seal is embedded in the cavity of the heparin cap 9 .

In this embodiment, the intravenous indwelling needle includes: an extension tube 5, a liquid bag 8 and an anti-reflux component; the two ends of the anti-reflux component are respectively connected to the extension tube 5 and the liquid bag 8; the input end of the anti-reflux component is the liquid bag 8, The output end of the anti-backflow component is an extension pipe 5 . Wherein, the anti-backflow component is the anti-backflow valve 7 . When the venous indwelling needle is sealed, use two fingers to pinch the liquid sac 8 in a pulse manner and then release the fingers. Because of the anti-reversal valve 7, the medicinal liquid will not flow back into the liquid sac 8, and the liquid sac 8 is still in the flat position. deflated state, then close the pipe clamp 6 and get final product. The sealing operation of the venous indwelling needle is simplified, and there is no need to use a syringe to seal the venous indwelling needle, which avoids the fear of pediatric patients, reduces the difficulty of the sealing operation of the venous indwelling needle and the workload of medical staff, and solves the problem of venous indwelling needle The problem of backflow is easy to occur when the needle seals the tube.

The above is a detailed description of an embodiment of the venous indwelling needle provided by the embodiment of the present invention, and an application example of the venous indwelling needle provided by the embodiment of the present utility model will be described in detail below.

Please refer to FIG. 2 , which is a schematic structural diagram of an intravenous indwelling needle provided in an embodiment of the present invention in an infusion state. When using the venous indwelling needle, the whole infusion channel (indwelling catheter 2, catheter base 4, extension tube 5, anti-reversal valve 7, liquid bag 8, heparin cap 9) is filled with liquid medicine through exhaust operation firstly, and then through the puncture needle 1, after the indwelling catheter 2 is introduced into the blood vessels of the human body, the puncture needle 1 and the puncture needle holder 3 are pulled out and discarded, and the remaining part is used for infusion for the patient. After a continuous infusion, the intravenous indwelling needle needs to be sealed. In this embodiment, the tube sealing operation steps are as follows: use two fingers to pinch the liquid sac 8 flat in a pulse manner, and then release the fingers. Because of the function of the anti-reversal valve 7, the medicinal liquid will not flow back into the liquid sac 8, and the liquid will not flow back into the liquid sac 8. The capsule 8 is still in a flattened state, and then the tube clamp 6 can be closed. Please refer to FIG. 3 , which is a schematic structural diagram of an intravenous indwelling needle infusion provided in an embodiment of the present invention after the tube is sealed. The entire sealing process of the intravenous indwelling needle in this embodiment can be operated with one hand, which greatly simplifies the sealing operation of the intravenous indwelling needle in the prior art.

The application example of a kind of intravenous indwelling needle provided by the utility model has been introduced in detail above. For those of ordinary skill in the art, according to the idea of the utility model embodiment, there will be changes in the specific implementation and application range. In summary, the contents of this specification should not be construed as limiting the utility model.

Claims (10)

1. A venous indwelling needle, characterized in that, comprising: an extension tube, a fluid bag and an anti-reflux component; Both ends of the anti-reflux component are respectively connected to the extension tube and the liquid bag; The input end of the anti-reflux component is the liquid bag, and the output end of the anti-reflux component is the extension tube. 2. The intravenous indwelling needle according to claim 1, further comprising: an indwelling catheter, a catheter adapter and a connector; The catheter adapter includes: a first interface and a second interface; The indwelling catheter is connected to the first interface; The first end of the extension tube is connected to the second interface, and the second end of the extension tube is connected to the anti-reflux component; The first end of the liquid bag is connected to the anti-reflux component, and the second end of the liquid bag is connected to the joint for inputting medical fluid. 3. The intravenous indwelling needle according to claim 2, further comprising: a puncture needle and a puncture needle seat; The indwelling catheter is set on the puncture needle; The tail of the puncture needle is fixed on the puncture needle seat. 4. The intravenous indwelling needle according to any one of claims 1 to 3, further comprising: a tube clip, The pipe clamp is arranged on the outside of the extension pipe. 5. The venous indwelling needle according to claim 4, wherein the anti-reflux component is an anti-reflux valve or a one-way valve. 6. The venous indwelling needle according to claim 5, wherein the anti-reverse valve is a one-way anti-reverse valve. 7. The intravenous indwelling needle according to claim 3, wherein the connector is a Y-type connector or a straight-type connector. 8. The intravenous indwelling needle according to claim 7, wherein the first end of the straight connector is connected to the second end of the liquid bag; The second end of the straight connector is provided with a heparin cap. 9. The intravenous indwelling needle according to claim 7, wherein the first end of the Y-shaped joint is connected to the second end of the liquid bag; The second end of the Y-shaped joint is provided with a heparin cap; The third end of the Y-joint is provided with a white end cap. 10. The intravenous indwelling needle according to claim 8 or 9, characterized in that a sealing member is embedded in the cavity of the heparin cap.