CN201469819U - Plastic sealing ring - Google Patents

Abstract

The utility model relates to a plastic sealing ring, in particular to a combined plastic sealing ring used in a syringe, consisting of a soft plastic sealing ring and a hard plastic push rod, wherein the soft plastic sealing ring is made of soft plastic for medical purposes; the hardness of the soft plastic sealing ring is similar to that of a rubber sealing ring in the market, and the soft plastic sealing ring has small range of hardness error, stable size, good weather resistance and uneasy aging; the plastic sealing ring does not contain free solvate; the soft plastic sealing ring has simple production technique and easy control; the size and shape of the soft plastic sealing ring are similar to that of the existing rubber sealing ring; the use of the plastic sealing ring is the same as that of the existing rubber sealing ring, has good sealing performance and has no harm on a human body; the soft plastic sealing ring is sheathed at the front part of the hard plastic push rod, the middle section of the hard plastic push rod is provided with a transverse circular ring which is beneficial to being held by hand; the hand holding the transverse circular ring can conveniently push and pull the push rod; and the combined plastic sealing ring can replace the existing rubber sealing ring and is widely applied in the injection field.

Description

A kind of plastic seal ring

Technical field this utility model relates to the sealing ring of using in a kind of syringe, is a kind of combined plastic sealing ring that is used in the syringe specifically.

The sealing ring of using in the present syringe of background technology is made up of rubber seal and core bar, and rubber seal is made by natural rubber, and natural rubber is a mixture, include more free dissolved matter, these dissolved matters contact with medicinal liquid and are dissolved in the medicinal liquid, to some harm of human body, in addition, the complex production process of rubber seal, wayward, after the molding, the hardness range of error is big, poor dimensional stability, weatherability is poor, and easily aging during low temperature, these factors make that the sealing ring seal degree is poor, moreover, the core bar bar muscle that is connected with rubber seal is the front and back trends, and is higher, is unfavorable for holding, during medical worker's push-and-pull core bar, inconvenient operation.

The summary of the invention the purpose of this utility model is exactly in order to solve the shortcoming that above-mentioned sealing ring exists, and provide do not contain free dissolved matter, sealing ring tightness in a kind of can be good, push-and-pull core bar plastic seal ring easily.

For reaching this purpose, this utility model is taked following technical scheme:

This utility model is made up of flexible plastic sealing ring and duroplasts push rod, the flexible plastic sealing ring is made by medical flexible plastic, rubber seal on flexible plastic sealing ring hardness and the market is approaching, its production technology is easy to control, and its hardness range of error is little, and size is relatively stable, and good weatherability, be difficult for wearing out, thereby its good seal performance, free dissolved matter do not contained in it, nontoxic to human body, the rubber seal that the size shape of plastic seal ring is roughly the same present, flexible plastic sealing ring are socketed on the duroplasts push rod, and horizontal circle is arranged in the middle of the duroplasts push rod, laterally circle helps holding, during the push-and-pull push rod, hold on circle, push-and-pull is convenient.

Compare with present sealing ring, it replaces original natural rubber sealing ring and core bar with medical flexible plastic sealing ring and duroplasts push rod, has improved the sealing property of sealing ring, has reduced the harm of its inclusions to human body, and has made things convenient for medical worker's operation.

Description of drawings Fig. 1 product structure figure

Among the figure: 1, flexible plastic sealing ring 2, duroplasts push rod 3, horizontal circle

Specific embodiment this utility model is made up of flexible plastic sealing ring 1 and duroplasts push rod 2, flexible plastic sealing ring 1 is made by medical flexible plastic, rubber seal on flexible plastic sealing ring 1 hardness and the market is approaching, flexible plastic sealing ring 1 hardness range of error is little, dimensionally stable, good weatherability is difficult for aging, in do not contain free dissolved matter, the rubber seal that the size shape of flexible plastic sealing ring 1 is roughly the same present.The use of flexible plastic sealing ring 1 is with present rubber seal, the opening part of flexible plastic sealing ring 1 is gradient, this gradient helps duroplasts push rod 2 front portions and passes through, and enter in the sealing ring, duroplasts push rod 2 is anterior supporting with flexible plastic sealing ring 1 inner chamber, duroplasts push rod 2 front portions can be inserted intracavity in the flexible plastic sealing ring 1 easily, horizontal circle 3 is arranged on duroplasts push rod 2 stage casings, duroplasts push rod 2 bar muscle are low, laterally circle 3 helps holding, hold push-and-pull duroplasts push rod 2 on horizontal circle 3, convenient.

Claims (1)

1. plastic seal ring, form by flexible plastic sealing ring (1) and duroplasts push rod (2), it is characterized in that: flexible plastic sealing ring (1) is made by medical flexible plastic, flexible plastic sealing ring (1) opening part is gradient, flexible plastic sealing ring (1) is socketed on the duroplasts push rod (2), duroplasts push rod (2) front portion intracavity in flexible plastic sealing ring (1), duroplasts push rod (2) has horizontal circle (3) on the stage casing, and duroplasts push rod (2) bar muscle is low.

Images