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Mono-directional inverse-inhibiting safe blood taking needle

A lancet, one-way technology, applied in the field of medical appliances, can solve the problems of blood flowing into venous blood vessels, adverse effects, and potential safety hazards, and achieve the effect of ensuring safety, reasonable structure, and protecting medical staff

Active Publication Date: 2012-11-21
SHINVA ANDE HEALTHCARE APP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the blood collection needles currently used for venous blood collection are all-through, and there is no anti-backflow structure. When the pressure in the blood collection tube is greater than the pressure in the human vein, the blood in the blood collection tube may flow into the venous blood vessel.
On the other hand, there are various reagents in blood collection tubes, and when backflow occurs, the reagents mixed with blood enter human veins, which may cause adverse effects
In addition to the above, after the blood collection is completed, the needle sheath is inconvenient to continue to be inserted on the venipuncture needle. Most of the needles are exposed to the outside, and medical staff are easily injured by the needle, which is easy to cause pollution and infection. There are safety hazards in the use process.

Method used

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  • Mono-directional inverse-inhibiting safe blood taking needle
  • Mono-directional inverse-inhibiting safe blood taking needle
  • Mono-directional inverse-inhibiting safe blood taking needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Venipuncture end needle tube 6 is directly connected on the one-way valve base 5, as figure 1 shown.

Embodiment 2

[0031] The needle tube 6 at the venipuncture end is connected to the one-way valve base 5 through the flexible pipe 7, the needle tube 6 at the venipuncture end is mounted on the needle handle 8, and the needle tube 6 at the venipuncture end is covered with a protective cover 9 for the needle tube at the venipuncture end, such as figure 2 shown.

[0032] The structure of needle handle 8 is as image 3 , 5 , 6, the needle handle 8 is provided with a raised card point 11, and the raised card point 11 is connected to the elastic slider 10.

[0033] The structure of the venipuncture end needle tube protective cover 9 is as follows: Figure 4 As shown, the inner wall of the venipuncture end needle tube protective cover 9 is provided with front and rear two draw-in grooves 12, 13, and the outer wall of the venipuncture end needle tube protective cover 9 has a slide groove.

[0034] The combination of the above-mentioned needle handle 8 and the needle tube protective cover 9 at t...

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PUM

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Abstract

The invention belongs to the field of medical appliances and particularly relates to a mono-directional inverse-inhibiting safe blood taking needle. The mono-directional inverse-inhibiting safe blood taking needle is characterized by comprising an abutting end needle tubing, a vein puncture end needle tubing and a connection device arranged between the abutting end needle tubing and the vein puncture end needle tubing, wherein the connection device is provided with a mono-directional inverse-flow-inhibiting structure. The blood taking needle has reasonable structure, is capable of avoiding the blood flowing back to human body veins from the blood taking tube by means of the mono-directional inverse-flow-inhibiting structure, so that the safety of the person who is blooded is ensured; the designed needle handle and a vein puncture end needle protection cover are configured into a safe puncture-preventing device, so that the vein puncture end needle tubing is prevented from error puncture, the medical workers are protected, and the safe blood taking function is realized.

Description

technical field [0001] The invention relates to a one-way anti-reverse safety blood collection needle, which belongs to the field of medical appliances. Background technique [0002] Currently, various blood collection needles are used in venous blood collection. When blood collection is performed, the venipuncture needle of the blood collection needle is first inserted into the vein, the butt joint needle tube is pierced through the rubber plug of the vacuum blood collection tube, and the blood enters the vacuum blood collection tube through the passage of the blood collection needle under the vacuum suction of the vacuum blood collection tube. As the vacuum degree in the vacuum blood collection tube decreases, the blood collection is terminated when the pressure in the vacuum blood collection tube is approximately equal to the pressure of the blood vessel. When the position of the blood collection tube is higher than that of the blood vessel or the pressure of the human v...

Claims

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Application Information

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IPC IPC(8): A61B5/154
Inventor 王英顺聂玉才
Owner SHINVA ANDE HEALTHCARE APP CO LTD
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