Puncture drainage needle of fingertip hemostix and hydrophilic treatment method for internal surface of puncture drainage needle

A treatment method and drainage needle technology, which are applied in the field of medical devices, can solve the problems that the puncture needle cannot automatically absorb blood, the work is cumbersome, and the extraction is not easy, and the effect of increasing the treatment city, delaying the dissolution rate, and facilitating the electrolytic voltage is achieved.

Active Publication Date: 2019-08-02
深圳市凯特生物医疗电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, blood collection for glycated hemoglobin detection generally uses a needle tube to draw blood or a puncture needle and a vacuum tube to draw blood together. However, in fact, only 20-50 μL of blood is needed for the instrument test, which leads to excessive blood collection, and a large amount of biochemical pollution waste is left behind after the measurement
Moreover, when using the blood collection device that uses the air pressure difference in the blood drawer to draw blood, it is necessary to process the drawer into a negative pressure in advance, which is cumbersome and troublesome.

Method used

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  • Puncture drainage needle of fingertip hemostix and hydrophilic treatment method for internal surface of puncture drainage needle
  • Puncture drainage needle of fingertip hemostix and hydrophilic treatment method for internal surface of puncture drainage needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 Figure 1-2 As shown, a puncture drainage needle includes a needle tip 3 and a needle body 2. A hydrophilic layer 1 is provided on the inner surface of the puncture drainage needle. The hydrophilic layer 1 is the inner surface of the puncture drainage needle and the corrosion and scale inhibitor pass through the electrolytic cell The reaction is formed, the outer diameter of the needle body 2 of the puncture drainage needle is 0.5-2.5 mm, and the inner diameter of the needle body 2 is 0.1-2 mm.

Embodiment 2

[0044] Example 2 Hydrophilic treatment of the inner surface of the puncture drainage needle 1

[0045] Hydrophilic treatment is performed on the inner surface of the puncture and drainage needle 1 of the fingertip blood collection device, and the steps are as follows:

[0046] (1) Preparation of electrolyte solution: Weigh 6.8g potassium dihydrogen phosphate, 7.1g disodium hydrogen phosphate and 3.7g potassium chloride, dissolve them in 1L ultrapure water, add 0.02mL HEDP commercial solution, stir and mix, Ultrasonic degassing for 20 minutes, adding 0.5 mg of ground multilayer graphene, and ultrasonic dispersion for 1 hour.

[0047] (2) Electrolytic cell circuit connection: connect the two ends of the 316L stainless steel puncture needle with an outer diameter of 0.5mm and an inner diameter of 0.1mm to insulating hoses, one end of the insulating hose is driven by a peristaltic pump into the electrolytic cell, and the other end is insulated The hose directly extends into the electrol...

Embodiment 3

[0050] Example 3 Hydrophilic treatment of the inner surface of the puncture drainage needle 2

[0051] Hydrophilic treatment is performed on the inner surface of the puncture drainage needle 2 of the fingertip blood collection device, and the steps are as follows:

[0052] (1) Preparation of electrolyte solution: Weigh 13.6g potassium dihydrogen phosphate, 14.2g disodium hydrogen phosphate and 71.02g sodium sulfate, dissolve them in 1L ultrapure water, add 2mL ATMP commercial solution, stir and mix, add 50mg The single-layer graphene after grinding was ultrasonically dispersed for 2 hours.

[0053] (2) Electrolytic cell circuit connection: connect the two ends of the 304 stainless steel needle drainage needle with outer diameter of 2.5mm and inner diameter of 2mm to insulating hoses, one end of the insulating hose is driven by a peristaltic pump into the electrolytic cell, and the other end is insulated The hose is directly extended into the electrolytic cell. After the peristaltic ...

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Abstract

The invention discloses a puncture drainage needle of a fingertip hemostix and a hydrophilic treatment method for internal surface of the puncture drainage needle. The puncture drainage needle is a drainage needle of which the inner surface is provided with a hydrophilic layer. By taking the inner surface of the puncture drainage needle as a working electrode of an electrolytic tank, the inner surface of the puncture drainage needle is subjected to electrolysis and complex reaction in an electrolyte solution of the electrolytic tank, and the inner surface of the puncture drainage needle is modified to be hydrophilic. The treated puncture drainage needle has better capillarity, and can automatically suck fingertip blood; after the puncture drainage needle is filled with the blood, the bloodautomatically flows into a blood collection tube under the effect of gravity. By adopting the blood collection mode, blood collection amount is less, a large amount of biochemically contaminated waste is prevented from being left behind, and the operation is convenient and simple.

Description

Technical field [0001] The present invention relates to the field of medical devices, and more specifically, to a method for hydrophilic treatment of a fingertip blood sampling device puncture and drainage needle and its inner surface. Background technique [0002] The glycosylated hemoglobin HbA1c measured by the glycosylated hemoglobin analyzer can reflect the patient's average blood glucose level in the past three or four months. The test result is not affected by whether the patient eats or drinks before the test. It is a "gold indicator" for diagnosing diabetes and evaluating blood glucose control level. , Has been more and more widely used in clinical practice. Since HbA1c is a relative amount rather than a total amount, that is, the ratio of glycated hemoglobin to the total amount of glycated and non-glycated hemoglobin, the measurement results of the whole blood sample and the appropriately diluted blood sample are consistent, so about two drops refer to Sharp blood is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/151A61B5/15C25D11/00
CPCA61B5/150022A61B5/150389A61B5/151A61B5/15101C25D11/00Y02E60/36
Inventor 陈国松黄立明李妍殷诗雨唐美华石成成张娟黄捷
Owner 深圳市凯特生物医疗电子科技有限公司
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