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Potential cytotoxicity-free rubber piston for disposable sterile syringe and manufacturing method thereof

A cytotoxic, rubber piston technology, applied in subcutaneous injection devices and other directions, can solve rare problems and achieve the effects of long service life, convenient use and environmental protection

Inactive Publication Date: 2010-06-09
山东东大医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not many single-use syringe plungers on the market without potential cytotoxicity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1 Manufacture a kind of disposable aseptic syringe rubber plunger without potential cytotoxicity according to the following steps

[0053] a. Ingredients

[0054] Accurately weigh 4-6 parts by weight of zinc oxide, 0.5-2 parts by weight of stearic acid, 60-100 parts by weight of light calcium carbonate, 30-50 parts by weight of calcined clay, and 1-2 parts by weight of high wear-resistant carbon black (HAF330) 2-4 parts by weight of softening agent (Vaseline), 1-2 parts by weight of antioxidant (2246), 0.1-1 parts by weight of accelerator (TMTD), 0.5-2 parts by weight of vulcanizing agent (DCP), 0.2-1 parts by weight of sulfur Parts by weight, mixed evenly, set aside;

[0055] b. plasticizing, kneading

[0056] Accurately weigh 100 parts by weight of natural rubber (or polyisoprene rubber), carry out mastication according to the traditional process of rubber, and mix the raw materials uniformly mixed in step a;

[0057] c. Blank forming

[0058] Send the ...

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PUM

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Abstract

The invention relates to potential cytotoxicity-free rubber piston for a disposable sterile syringe and manufacturing method thereof, belonging to accessories of medical syringes. The potential cytotoxicity-free rubber piston for the disposable sterile syringe is characterized by containing the following raw material components in parts by weight: 100 parts of natural rubber (or polyisoprene rubber), 4-6 parts of zinc oxide, 0.5-2 parts of stearic acid, 60-100 parts of light calcium carbonate, 30-50 parts of calcined argil, 1-2 parts of high abrasion-resistant carbon black, 2-4 parts of softening agents, 1-2 parts of anti-aging agents, 0.1 to 1 part of promoters, 0.5-2 parts of vulcanizers and 0.2-1 part of brenstone. The invention provides the potential cytotoxicity-free rubber piston for the disposable sterile syringe and the manufacturing method thereof, the manufactured product accords with the technical conditions of the rubber piston for the YY0243-2003 disposable sterile syringe and has the advantages of no potential cytotoxicity, good sealing property, long service life and convenient use.

Description

technical field [0001] The invention relates to a disposable aseptic syringe rubber piston without potential cytotoxicity and a manufacturing method thereof, belonging to medical syringe accessories. Background technique [0002] Disposable medical syringes are medical devices that introduce liquid medicine into the human body. Aseptic syringes are composed of syringe jackets, core rods, and rubber pistons installed at the ends of the core rods. The rubber pistons used in the prior art are due to the composition of raw materials and Due to the limitation of components, the content of easily oxidized components is high, and it is difficult to meet the technical requirements stipulated in GB / T 15810. It must be soaked in hydrochloric acid before it can be put into use. It pollutes the environment and is inconvenient to use. Moreover, the additives in the raw material of the syringe plunger in the prior art are dissolved by the liquid medicine and enter the liquid medicine dur...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08K13/02C08K3/22C08K5/09C08K3/26C08K3/34C08K3/04C08K3/06B29C45/00B29C35/02A61M5/315
Inventor 胡庆国许军陈雷李红卫袁伟马成普钟永涛
Owner 山东东大医疗科技有限公司