Injector reducing residual volume of liquid medicine

A syringe and residual volume technology, applied in the field of medical tools, can solve the problems of inaccurate dose of injected drugs, reduced drug efficacy, residual drug volume, etc., and achieve the effects of ensuring drug efficacy and efficacy, reducing patient costs, and eliminating drug waste.

Inactive Publication Date: 2018-04-06
高玉霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing syringe itself has a dead space in the syringe during the drug injection process, resulting in residual drug volume. Accurate, especially for some biological agents with small injection doses and expensive prices, it is easy to waste drugs and reduce the efficacy of drugs, and provide a syringe that reduces the residual amount of liquid medicine

Method used

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  • Injector reducing residual volume of liquid medicine
  • Injector reducing residual volume of liquid medicine
  • Injector reducing residual volume of liquid medicine

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Embodiment Construction

[0016] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, a syringe for reducing the residual amount of liquid medicine comprises an empty syringe barrel 1 and an injection piston 2. The empty syringe barrel 1 has a nipple 11, and the injection piston 2 is arranged in the empty syringe barrel 1. It is characterized in that: the injection The inside of the piston 2 has a through hole 21, and the front end of the injection piston 2 has a return spring. The residual medicine piston 3 is arranged in the through hole 21 of the injection piston 2, and is sealed and matched with the through hole 21. The residual medicine piston 3 includes a piston rod 31, a sealing Washer 32, spring retaining ring 33 and push plate 34, sealing washer 32 and spring retaining ring 33 are respectively fixedly arranged on the front end of piston rod 31, push plate 34 is fixedly arranged on the rear end of piston rod 31, and sealing washer 32 cooperates with nipple 11, The spring ...

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PUM

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Abstract

The invention discloses an injector reducing residual volume of liquid medicine. The injector comprises an injector cylinder, an injection piston. The injector cylinder is provided with a nipple. Theinjection piston is arranged in the injector cylinder. The injector is characterized in that a hole is in the injection piston, a residual medicine piston is arranged in the hole of the injection piston, and is cooperated with the hole in a sealed manner. When liquid medicine is extracted, the injection piston and the injector cylinder are cooperated to extract the liquid medicine. When the liquidmedicine is injected, a piston on the front part of the injection piston discharges medicine of the injector cylinder, and then the residual medicine piston is pushed, a sealing gasket is cooperatedwith the nipple, and the sealing gasket on the front end of a piston rod completely discharges medicine in the nipple. After completion, a spring retaining ring and a return spring are cooperated, andthe piston rod is returned, to complete to inject the medicine. The injector is simple in structure, convenient in operation, and is safe and reliable. The injector can completely discharge residuesin the nipple, medicine injection dose is more accurate, and medicine waste is eliminated, medication effect and curative effect are guaranteed, and cost of a patient is reduced.

Description

technical field [0001] The invention relates to a medical tool, in particular to a syringe for reducing the residual amount of medicinal liquid. Background technique [0002] A syringe consists of a needle (consisting of a needle tip, a needle stem, and a needle plug) and a syringe (consisting of a nipple, an empty cylinder, a piston, a piston shaft and a piston handle), and is mainly used for injecting or pumping liquid medicine, especially for intravenous Injection: The syringes currently used in clinical practice have dead spaces in the syringes during the injection process, resulting in residual drug doses, which make the doses of injected drugs inaccurate, especially for some small and expensive liquids, which can easily cause drug waste and reduce Drug curative effect; the front end of the syringe empty barrel has a nipple; the front end of the injection piston has a piston, and the front end of the piston has a drug-discharging nipple, and the drug-discharging nipple ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/178A61M5/315
CPCA61M5/178A61M5/31511A61M2005/31516
Inventor 高玉霞
Owner 高玉霞
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