Micro-scale syringe

A micro-sampling and syringe technology, applied in the field of micro-sampling needles, can solve the problem of metal pistons being easily damaged, and achieve the effect of protecting safety

Inactive Publication Date: 2019-07-19
WEST ANHUI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A micro-sampling needle proposed by the invention solves the pr...

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  • Micro-scale syringe
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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0025] refer to Figure 1-6 , a micro-sampling needle, comprising a syringe 1, a piston rod 2 is arranged on the top of the syringe 1, and one end of the piston rod 2 protruding from the syringe 1 is fixedly connected with a push button 3, and a docking assembly 4 is arranged on the push button 3 The two sides of one end of the syringe 1 close to the push button 3 are provided with holding grooves 5 arranged symmetrically along it, and the inside of the holding groove 5 is slidably connected with a guide assembly 6 connected with the docking assembly 4, and the bottom end of the syringe 1 is provided with a needle 7. The docking assembly 4 includes a frame 8 with a c...

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Abstract

The invention belongs to the field of gas chromatographic sample injector, in particular to a micro-scale syringe. According to the scheme, the micro-scale syringe includes a work drum and a piston rod is arranged at the top end of the work drum. One end, extending out of the work drum, of the piston rod is fixedly connected with a pushing button which is provided with a butt joint assembly. A pair of retention grooves are symmetrically formed along two sides of one end, near the pushing button, of the work drum. A guidance assembly, connected with the butt joint assembly, is in a sliding connection with the internal part of the retention grooves. According to the micro-scale syringe, the combination with and separation from a syringe is conducted to realize reuse. When using the micro-scale syringe, the pushing button of the syringe is guided to avoid the deflection of the pushing button and the piston rod connected with the pushing button and protect the safety of the syringe. When the micro-scale syringe injecting, by buffering the force of the piston rod, over much injection volume and over fast injection is avoided when pushing force is over strong. Relative motion between thework drum and the pushing button is avoided to realize quantitative injection, and the outflow of liquid in the syringe, under the action of external forces, when do not use the micro-scale syringe,is avoided.

Description

technical field [0001] The invention relates to the technical field of gas chromatography sample injectors, in particular to a micro-injection needle. Background technique [0002] Micro-injection needle is a kind of manual injector. It is classified into flat-headed injection needle and pointed-shaped needle. The hardness of the metal piston of the injection needle should not be too high. The metal piston of the injection needle is relatively long and thin, which is easy to be damaged under the action of external force. Therefore, a micro injection needle is designed. Contents of the invention [0003] The micro-injection needle proposed by the invention solves the problem that the metal piston of the existing injection needle is easily damaged. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: [0005] A micro-sampling needle, comprising a syringe, the top of the syringe is provided with a piston rod, and one...

Claims

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Application Information

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IPC IPC(8): G01N30/18
CPCG01N30/18
Inventor 李善奇金俊成谢成根
Owner WEST ANHUI UNIV
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