Safe type intravenous infusion needle

Abstract

The invention discloses a safe type intravenous infusion needle which comprises a needle tube, a needle tube seat and an infusion hose, and is characterized in that a flexible sleeve sleeves the needle tube; the top end of the sleeve wraps the pointed end of the needle tube; the bottom end of the sleeve is connected with a sleeve seat; the sleeve seat sleeves the needle tube; the sleeve seat is connected with a sleeve seat handle; one part of the sleeve seat handle is pressed to be in contact with the needle tube seat; an elastic component is arranged between the sleeve seat and the needle tube seat; when the needle tube seat is fixed, external force is applied to the sleeve seat to drive the sleeve seat to move towards a direction getting close to the needle tube seat and forces the elastic component to deform; the pointed end of the needle tube is exposed from the top end of the sleeve; an operator presses and fixes the contact part of the sleeve seat handle to the surface of the needle tube seat, so that the elastic component cannot be reset; after the pointed end of the needle tube enters a vein, pressure on the sleeve seat handle is lowered to force the sleeve seat to move faraway from the needle tube seat under elastic resetting force generated by releasing elastic potential energy of the elastic component, and finally, the top of the flexible sleeve wraps the sharp pointed end of the needle tube.

Description

Technical field [0001] The invention relates to a safe intravenous infusion needle, belonging to the technical field of medical equipment. Background technique [0002] Venous puncture and associated intravenous infusion is the most commonly used general technique in various clinical departments. The needle tube without flexible cannula is the ordinary puncture needle of rigid material. When the puncture is successful, the rigid needle tube stays in the vein for a short time For example, for a few hours, there is always a risk that a rigid needle tube will puncture the vein due to physical activities and other reasons during the detention period; if it needs to be left for a long time, such as a few days or the patient’s limbs are difficult to fix, a rigid needle tube cover is usually used. Indwelling needle with flexible cannula, the tip of the rigid needle tube is exposed. After the puncture is successful, the rigid needle cannula is pulled out so that the flexible cannula is i...

AI Technical Summary

Problems solved by technology

[0008] 1. When blood returns, the sharp tip of the infusion needle runs through the vein while continuing to insert the needle, resulting in puncture failure

[0009] 2. The venous pressure-dependent passive blood return method makes it difficult to see the blood return when the patient's venous pressure is low or other related conditions, and the tip of the needle tube that has already entered the venous lumen continues to advance through the vein wall, resulting in puncture failure

[0010] 3. Because the index finger located under the needle base will inevitably touch the skin adjacent to the puncture point after disinfection during operation, when there are microorganisms on the index finger, it is very easy to contaminate the puncture point and cause pipeline-related bloodstream infection (CRBSI)

[0011] 4. Because the index finger located under the needle tube seat during operation will affect the selection of the needle insertion angle, that is, the angle between the needle tube and the skin, reducing the success rate of puncture

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