CN211535991U - Disposable intravenous infusion needle - Google Patents

Abstract

The utility model discloses a disposable intravenous infusion needle, which comprises a trocar; outer needle flat-head needle, interior needle are sharp needle, sharp needle flat-head needle is equipped with the handle respectively, and flat needle front end is outstanding in sharp needle front end, and sharp needle rear end is outstanding in flat needle rear end, by spring coupling between flat-head needle and the sharp needle, be elastic telescopic sliding fit between flat-head needle and the sharp needle, flat-head needle handle rethread, sharp needle salient in flat needle front end, be equipped with between sharp needle handle and the flat-head needle handle and hinder bullet piece, hinder bullet piece one end and flat-head needle handle or sharp needle handle and link to each other by the rotation axis, hinder bullet piece other end and use the rotation axis to move about as the fulcrum, block flat-head needle handle and sharp needle handle when hindering bullet piece whereabouts, the utility model discloses can improve nurse's puncture success rate, avoid the kingpin during the infusion, the infusion completion prevents to hinder the people and infect.

Description

Disposable intravenous infusion needle

Technical Field

The utility model relates to the field of medical equipment, in particular to a disposable intravenous infusion needle.

Background

The intravenous infusion is one of the important measures for rescuing and treating patients in hospitals, the intravenous infusion needle is divided into a disposable intravenous infusion needle and an intravenous retention needle, the retention needle is troublesome to wash and seal a tube every day due to higher manufacturing cost, the retention needle is easy to form thrombus in a blood vessel, the activity of the patient is also influenced at ordinary times, therefore, the disposable venous transfusion needle is better, but the disposable venous transfusion needle has the following defects that firstly, when the disposable venous transfusion needle punctures a blood vessel, the requirement on the service level of nurses is high, the difficulty in judging whether the needle point enters the blood vessel or not by the falling feeling in the process of puncturing the blood vessel is high, and the blood vessel is easy to puncture when the needle is further inserted, secondly, in the process of infusion, because the needle tip is exposed in the blood vessel, when a patient moves, the blood vessel is easy to puncture to cause the rolling needle, the three-stage infusion is completed, and the infusion needle is pulled out, and because the needle tip is exposed, the patient is easy to stab to cause infection.

The utility model discloses the content

The utility model provides a disposable intravenous transfusion needle for overcoming the defects, which comprises a trocar; the outer needle is a flat-head needle, the inner needle is a sharp-head needle, and the rear end of the sharp-head needle is connected with a transfusion tube; the sharp-pointed needle is provided with a handle, the flat-pointed needle is provided with a handle, the front end of the flat-pointed needle protrudes out of the front end of the sharp-pointed needle, the rear end of the sharp-pointed needle protrudes out of the rear end of the flat-pointed needle, the flat-headed needle is connected with the sharp-headed needle by a spring, the flat-headed needle is elastically, telescopically and slidably matched with the sharp-headed needle, the flat-head needle handle moves backwards, the sharp-head needle protrudes out of the front end of the flat-head needle, the bullet-resistant piece is arranged between the flat-head needle handle and the flat-head needle handle, one end of the bullet-resistant piece is connected with the flat-head needle handle or the sharp-head needle handle through a rotating shaft, the other end of the bullet-resistant piece moves by taking the rotating shaft as a fulcrum, the flat-head needle handle and the sharp-head needle handle are clamped when the bullet-resistant piece falls, the flat-head needle and the sharp-head needle cannot elastically contract, and the flat-head needle and the sharp-head needle elastically recover when the bullet-resistant piece, as the gap between the back end of the flat-headed needle and the sharp-headed needle can be blocked by elastic colloid materials or sealing liquid, the prior art does not have to be discussed more.

The utility model has the advantages of

Firstly, the nurse can help the infusion needle enter the blood vessel by the feeling of the pressure of the finger on the handle, and the nurse can observe the ejection of the handle through eyes to judge whether the puncture is successful or not, thereby reducing the puncture difficulty and improving the puncture success rate,

secondly, the problem that the needle roller is easy to be caused by the movement of the patient during the transfusion is prevented,

thirdly, the needle pulling process can not cause secondary damage of the needle tip to the blood vessel, and the infusion needle can not be punctured to cause infection when being pulled out.

Drawings

Fig. 1 is a structural schematic diagram of a disposable intravenous infusion needle.

1 sharp-head needle, 2 flat-head needle, 3 sharp-head needle handle, 4 flat-head needle handle, 5 spring, 6 elastic resistance piece and 7 rotating shaft.

Detailed Description

When a nurse carries out transfusion, the 6-point elastic piece is lifted, the other end of the 6-point elastic piece is lifted upwards by taking a 7-rotation shaft as a fulcrum, the 6-point elastic piece is not clamped between the 3-point needle handle and the 4-flat-head needle handle, the elastic telescopic sliding fit between the 1-point needle and the 2-flat-head needle is recovered, the 3-point needle handle is pinched by a thumb and a middle finger of the nurse, the index finger hooks the 4-flat-head needle handle, the 4-flat-head needle handle is hooked by the index finger to drive the 2-flat-head needle to move backwards, the 1-point needle protrudes out of the front end of the 2-flat-head needle to puncture the skin, the 1-point needle drives the 2-flat-head needle to enter the skin together to puncture the blood vessel, whether the 2-flat-head needle can protrude out of the front end of the 1-point needle handle is slightly loosened by the index finger, when the 4-flat-head needle handle is not moved, the 1-, the nurse sees that 4 flat-head needle handles pop up to see that the puncture is successful, puts down 6 and blocks between 3 sharp-head needle handles and 4 flat-head needle handles to bullet piece card, and elasticity disappears, carries out the infusion.

The above description is the present invention, but the protection scope of the present invention is not limited thereto, and any simple deduction and modification is within the protection scope of the present invention.

Claims (2)

1. Disposable intravenous infusion needles, including trocars; the outer needle is a flat-head needle, the inner needle is a sharp-head needle, and the rear end of the sharp-head needle is connected with the infusion tube; the method comprises the following steps of; the flat-head needle is connected with the sharp-head needle through a spring, the flat-head needle is elastically, telescopically and slidably matched with the sharp-head needle, the flat-head needle handle moves backwards, the sharp-head needle protrudes out of the front end of the flat-head needle, and a bullet blocking piece is arranged between the sharp-head needle handle and the flat-head needle handle.

2. The disposable intravenous infusion needle as claimed in claim 1, wherein the resilient member has a rotation shaft at one end thereof connected to the spike handle or the flat spike handle.

Images