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Safe pen type blood taking needle

A lancet, safe technology, used in medical science, sensors, diagnostic recording/measurement, etc., to eliminate needle stick injuries, eliminate risks, and improve work efficiency

Inactive Publication Date: 2011-04-27
黄琪凌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is not yet a simple, economical, practical and safe technical solution that has been disclosed in China.

Method used

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  • Safe pen type blood taking needle
  • Safe pen type blood taking needle
  • Safe pen type blood taking needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Accompanying drawing 1 is a traditional split-type venous blood collection needle, and its structure is in the flexible tube of the venous infusion needle. In the figure, the structure and function of the venous puncture needle A1 are the same as that of the venous infusion needle, and at the other end of the venous needle flexible tube A3 A single-ended blood collection needle A5 is connected to the connecting seat A4, and the outer edge of the needle seat A5 has a spiral thread pattern. When in use, the blood collection needle needs to be rotated and fixed at the front end of the outer cylinder of the needle holder; during the blood collection process, due to the long connection hose of the blood collection needle, about 20 cm, the venipuncture needle at the front end and the residual in the hose The blood cannot be completely sucked by the vacuum tube. When the blood collection needle and the hose are removed, the blood will flow everywhere, polluting the environment ...

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PUM

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Abstract

The invention relates to a safe pen type blood taking needle, comprising a sheath, an outer cylinder, a needle seat, a needle tube, a spring and a blood stopping sleeve, wherein the lower section of the needle seat is provided with a spring supporting platform, and the periphery of the needle seat is provided with a disc which is connected with the platform by utilizing a cross bridge; the inner edge of the disc is also provided with a pair of arc plain films protruding towards an axle center, and the outer edge of the disc is also provided with a pair of fins expanding downwards and outwards; the front end of the outer cylinder is provided with a conical head, an inner hole of the conical head is communicated with an intracavity of the outer cylinder, a pair of arc stand columns extending into the cylinder is arranged at the inner hole wall of the conical head facing towards the inner side of the cylinder, and an extroversion curling edge is arranged at the bottom of the stand columns; the inner wall of the lower section of the outer cylinder is provided with an annular protruding ridge; and the arc plain films can be embedded with the extroversion curling edge at the bottom of the arc stand columns so that the spring is compressed in the intracavity of the conical head by the needle seat. After blood-taking is completed, a blood taking tube is necessarily and deeply inserted, a cap stopper of the blood taking tube ensures that the arc fins and the arc plain films which are arranged at the lower section of the needle seat are expanded outwards to disengage the clamping of the extroversion curling edge, the needle seat is released, and the spring is returned to drive the needle seat and the needle tube to be shrunk into the cylinder. The annular protruding ridge at the lower section of the outer cylinder prevents the arc fins from sliding down so that the needle seat and the needle tube are hidden in the intracavity of the outer cylinder.

Description

(1) Technical field [0001] The invention relates to a pen-type blood collection needle, specifically a pen-type blood collection needle with a safety needle holder, which is used in the collection process of venous blood specimens in cooperation with a vacuum blood collection tube. (2) Background technology [0002] People collect and obtain human physiological and pathological information by various means to correctly diagnose diseases; among them, there are usually three ways to collect blood samples: (1) subcutaneous blood collection, which is mostly used for simple classification, counting and detection of blood components ; Mostly use hypodermic (solid or triangular) blood collection needles; (2), venous blood collection can carry out detailed detection of hematology, blood etiology and other related subject indicators, which are widely used in clinical practice, and more pens are used (3) Arterial blood collection is mostly used to detect arterial blood gas indicators ...

Claims

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Application Information

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IPC IPC(8): A61B5/154
Inventor 黄琪凌
Owner 黄琪凌
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