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Injection needle silicone oil coating material and injection needle coated with silicone oil coating material

A technology of coating materials and injection needles, applied in the direction of coatings, hypodermic injection devices, needles, etc., can solve the problems of difficult puncture and increase the pain of the sick body, and achieve the effect of relieving pain, reducing pain, and increasing lubricity

Inactive Publication Date: 2018-07-24
CAINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The injection needle will bring pain to the patient when it punctures the patient. Now the surface of the needle is generally coated with silicone oil coating to increase the lubricity of the needle to reduce the puncture resistance of the injection needle, so as to reduce the pain of the patient; for veterinary injection needles, especially For veterinary injection needles with hard skin such as cattle and horses, it is difficult to puncture during injection, which increases the pain of the sick body; Bleeding, if some patients have a special system, such as hemophilia, there will be cases where the blood flow will not stop after injection

Method used

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  • Injection needle silicone oil coating material and injection needle coated with silicone oil coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The present invention is a silicone oil coating material for injection needles, which forms a silicone oil coating on the surface of the needle by impregnating the needle with a polysiloxane coating solution, or spraying or wiping the polysiloxane coating solution on the needle. A silicone oil coating is formed on the surface; the polysiloxane coating solution is formed by mixing polysiloxane in a mixed solvent, and the mixed solvent includes 5.23g of nitrocellulose, 3.5g of dibutyl phthalate, and 2.50ml of acetone , 45.30ml of ethanol, 44.00ml of ethyl acetate, 46.80ml of toluene, 1.40ml of isopropanol and 10.00ml of dimethylformamide; the polysiloxane is 1g. When the injection needle is impregnated with the polysiloxane coating solution, air is ventilated into the needle hole of the injection needle at the same time, and the injection needle is naturally dried after the impregnation is completed. The polysiloxane is polydimethylsiloxane. An injection needle coated wi...

Embodiment 2

[0016] The difference from Example 1 is that the polysiloxane is 2 g; after impregnation, the injection needle is heated and dried; the temperature of heated drying is lower than 250°C.

[0017] The maximum puncture force of needles of different specifications coated with the coatings of Embodiment 1 and Embodiment 2 of the present invention, after testing according to GB15811-2001 disposable sterile injection needles, is as follows:

[0018]

[0019] It can be seen that the coating prepared by adopting the formula of the present invention is far lower than the requirement of GB15811-2001 for the maximum puncture force. The lower the puncture force, the less pain the patient will feel, and the patient will not bleed when the needle tip is pulled out.

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PUM

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Abstract

The invention discloses an injection needle silicone oil coating material. A silicone oil coating is formed on the surface of a needle head by impregnating a needle head of an injection needle with apolysiloxane coating solution, or by spraying or wiping the polysiloxane coating solution to the needle head of the injection needle; the polysiloxane coating solution is prepared by mixing the polysiloxane with a mixed solvent, wherein the mixed solvent comprises the following materials in parts by weight: 2-4 parts of nitrocellulose, 1-3 parts of the di-n-butyl phthalate, 0.5-1.5 parts of acetone, 10-30 parts of ethanol, 15-30 parts of ethyl acetate, 20-30 parts of toluene, 0.3-1.2 parts of isopropyl alcohol and 3-8 parts of dimethylformamide; the mass concentration of the polysiloxane is 1.86 to 1.93. A spiral groove is disposed on the surface of the needle head to facilitate punctures in hard-skinned animals for injection of a liquid medicine; the setting of the silicone oil coating can greatly reduce the pain of a sick body during a puncture; and a wound will not bleed after a needle tip is pulled out once the injection is completed.

Description

technical field [0001] The invention relates to a silicone oil coating material for injection needles. Background technique [0002] The injection needle will bring pain to the patient when it punctures the patient. Now the surface of the needle is generally coated with silicone oil coating to increase the lubricity of the needle to reduce the puncture resistance of the injection needle, so as to reduce the pain of the patient; for veterinary injection needles, especially For veterinary injection needles with hard skin such as cattle and horses, it is difficult to puncture during injection, which increases the pain of the sick body; Bleeding. If some patients have a special system, such as hemophilia, there will be cases of continuous bleeding after injection. Contents of the invention [0003] The purpose of the present invention is to overcome the defects in the prior art and provide a silicone oil coating material for injection needles, which can easily puncture some h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/04A61L31/06A61L31/10A61L31/14A61L31/16A61M5/32
CPCA61L31/042A61L31/06A61L31/10A61L31/14A61L31/16A61L2300/216A61L2300/232A61L2300/418A61L2400/04A61L2420/06A61M5/3286A61M2205/0238C08L1/18C08L83/04C08L5/08
Inventor 陆军赵丽杰倪琳
Owner CAINA TECH CO LTD