CN221384662U - Anti-blood return indwelling needle - Google Patents

Abstract

The utility model discloses an anti-blood return indwelling needle, which relates to the technical field of venous indwelling needles and comprises a needle body, wherein a hose is fixedly communicated with the outer surface of the needle body, an anti-reflux valve is fixedly connected to the inner wall of the hose, one end of the hose, which is far away from the needle body, is fixedly communicated with a positive pressure connector, one end of the positive pressure connector is fixedly communicated with a glycerol cap, one end of the positive pressure connector is fixedly communicated with a negative pressure connector, the outer surface of the needle body is fixedly connected with a needle holding handle, so that medical staff can conveniently hold the needle body, the needle body is conveniently injected into a patient, and a protective cover is sleeved on the outer surface of the needle body, so that the needle body can be protected, and collision between the needle body and foreign matters caused in the moving process is avoided. When the medicine enters the needle body through the hose, the valve of the backflow prevention valve is in an open state during liquid input, and the valve of the backflow prevention valve is closed after the liquid is input or the tube is sealed by flushing, so that the phenomenon of blood return can be effectively avoided, the phenomenon of blood return blocking is avoided, and the subsequent practicability of the needle is influenced.

Description

Anti-blood return indwelling needle

Technical Field

The utility model relates to the technical field of venous indwelling needles, in particular to an anti-blood return indwelling needle.

Background technique

The core components of an intravenous catheter are a soft catheter/cannula that can be placed in a blood vessel and a stainless steel puncture guide needle core. When used, the catheter and the needle core are inserted into the blood vessel together. When the catheter is fully inserted into the blood vessel, the needle core is withdrawn, leaving only the soft catheter in the blood vessel for infusion therapy.

In clinical nursing work, when a patient's intravenous needle is infused, blood will return due to the loss of fluid. Secondly, after the fluid infusion is completed, blood will return to the tube due to limb movement, causing the needle to be blocked, which greatly shortens the use time of the intravenous needle, increases the patient's psychological pressure, and the nurse's workload. For this reason, we provide anti-blood-return needles to solve the above problems.

Utility Model Content

The purpose of the utility model is to make up for the deficiencies of the prior art and to provide an anti-blood return retention needle, which can effectively prevent the blood return of the venous retention needle from causing the retention needle to be blocked.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-backflow indwelling needle, comprising a needle body, the outer surface of the needle body is fixedly connected to a hose, the inner wall of the hose is fixedly connected to an anti-reflux valve, one end of the hose away from the needle body is fixedly connected to a positive pressure connector, one end of the positive pressure connector is fixedly connected to a glycan cap, and one end of the positive pressure connector is fixedly connected to a negative pressure connector.

Furthermore, a needle handle is fixedly connected to the outer surface of the needle body, which is convenient for medical personnel to hold the needle body and inject the needle body into the patient's body.

Furthermore, a protective cover is provided on the outer surface of the needle body to protect the needle body and prevent the needle body from colliding with foreign objects during movement, thereby preventing the needle body from being damaged.

Furthermore, a one-handed clamp is provided on the outer surface of the hose to facilitate limiting the position of the hose, squeezing and blocking the hose, and further preventing blood return.

Furthermore, the length of the needle body is generally 2-3 cm, so that the needle body can meet the ideal injection requirements and can effectively avoid causing discomfort inside the patient's blood vessels during the injection process.

Furthermore, the length of the hose is at most nine centimeters, which can effectively prevent the hose from swinging due to centrifugal force when the patient swings his arms during free activities, causing the hose to pull the needle.

Compared with the prior art, the anti-blood-backflow indwelling needle has the following beneficial effects:

1. In the utility model, when the medicine enters the interior of the needle body through the hose, the valve of the anti-reflux valve is in an open state when the liquid is input, and the valve of the anti-reflux valve is closed after the liquid input is completed or the tube is flushed and sealed, which can effectively avoid the occurrence of blood return and prevent the blood return from clogging the retention needle and affecting the subsequent practical use of the retention needle.

2. The utility model makes it easy for medical staff to hold the needle body and inject the needle body into the patient's body through the needle holding handle, and makes it easy for medical staff to hold the needle body and inject the needle body into the patient's body through the protective cover. The one-handed clamp makes it easy to limit the hose, squeeze and block the hose, and further prevent blood return.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a front view of the utility model;

Figure 2 is a cross-sectional view of the protective cover of the utility model;

FIG3 is a cross-sectional view of the hose of the present invention.

In the figure: 1. needle body; 2. hose; 3. needle handle; 4. protective cover; 5. one-hand clamp; 6. positive pressure connector; 7. negative pressure connector; 8. glucone cap; 9. anti-reflux valve.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

To this end, this embodiment provides an anti-blood backflow retention needle, which can effectively prevent the blood backflow of the venous retention needle from causing blockage of the retention needle.

1 to 3 , this embodiment provides an anti-blood backflow indwelling needle, including a needle body 1 , the outer surface of which is fixedly connected to a needle handle 3 , which is convenient for medical personnel to hold the needle body 1 and inject the needle body 1 into the patient's body.

The length of the needle body is generally 2-3 cm, so that the needle body 1 can meet the ideal injection requirements and can effectively avoid the needle body 1 causing discomfort inside the patient's blood vessels during the injection process.

The outer surface of the needle body 1 is covered with a protective cover 4, which can protect the needle body 1 and prevent the needle body 1 from colliding with foreign objects during movement, thereby preventing the needle body 1 from being damaged.

The outer surface of the needle body 1 is fixedly connected to a hose 2, and the length of the hose 2 is at most nine centimeters, which can effectively prevent the hose 2 from swinging due to centrifugal force when the patient swings his arms during free activities, causing the hose 2 to pull the needle body 1.

A single-handed clamp 5 is provided on the outer surface of the hose 2 to facilitate limiting the position of the hose 2, squeezing and blocking the hose 2, and further preventing blood from returning.

The inner wall of the hose 2 is fixedly connected with an anti-reflux valve 9, one end of the hose 2 away from the needle body 1 is fixedly connected with a positive pressure connector 6, one end of the positive pressure connector 6 is fixedly connected with a glycine cap 8, and one end of the positive pressure connector 6 is fixedly connected with a negative pressure connector 7.

Working principle: medical staff hold the needle handle 3 to insert the needle body 1 into the patient's body. When the drug needs to be injected, the drug enters the interior of the needle body 1 through the hose 2. The valve of the anti-reflux valve 9 is in an open state when the liquid is input. After the liquid input is completed or the tube is flushed and sealed, the valve of the anti-reflux valve 9 is closed, which can effectively avoid the occurrence of blood return, avoid blood return blocking the retention needle, and affect the subsequent use of the retention needle.

Claims (6)

1. Blood return prevention remaining needle, including needle body (1), its characterized in that: the outer surface fixed intercommunication of needle (1) has hose (2), and the inner wall fixedly connected with of hose (2) prevents valve (9) that backflows, and the one end that needle (1) was kept away from to hose (2) is fixed to be linked together and is had malleation joint (6), and the one end fixed intercommunication that malleation joint (6) had sweet element cap (8), and the one end fixed intercommunication that malleation joint (6) had negative pressure joint (7).

2. The anti-flashback needle of claim 1, wherein: the outer surface of the needle body (1) is fixedly connected with a needle holding handle (3).

3. The anti-flashback needle of claim 1, wherein: the outer surface of the needle body (1) is sleeved with a protective cover (4).

4. The anti-flashback needle of claim 1, wherein: the outer surface of the hose (2) is provided with a single-hand clamp (5).

5. The anti-flashback needle of claim 1, wherein: the length of the needle body (1) is generally 2-3 cm.

6. The anti-flashback needle of claim 1, wherein: the length of the hose (2) is at most nine cm.