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Loaded slope-expansion-type cap plug fastening mechanism

A technology of fastening mechanism and inclined plane, which is applied in the directions of packaging item types, sensors, diagnosis, etc., can solve the problems of simple and labor-saving assembly process, and achieve the effect of easy assembly and elimination of hidden dangers of biological safety.

Inactive Publication Date: 2012-12-12
南通港闸船舶制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in the prior art, there is no practical and effective technical solution that can achieve good bonding between the splash cap and the rubber plug, and make the assembly process of the two simple and labor-saving.

Method used

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  • Loaded slope-expansion-type cap plug fastening mechanism
  • Loaded slope-expansion-type cap plug fastening mechanism
  • Loaded slope-expansion-type cap plug fastening mechanism

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] The loading type inclined-plane expansion type cap fastening mechanism is composed of a fastening cap 1, a splash-proof cap 2, a clasp 3, a rubber plug 4, a pressure cylinder 5, an expansion wing 6 and a test tube 7.

[0019] Wherein, the upper end of the rubber plug 4 has a pair of expansion wings 6 with inclined planes, and the material of the two expansion wings 6 and the rubber plug 4 are both butyl rubber and integrated as a whole. The slopes of the two expansion wings 6 are arranged opposite to each other. The outer sides of the two expansion wings 6 are cylindrical sides and coaxial with the rubber plug 4, and the rubber plug 4 is plugged into the upper port of the test tube 7 and forms an interference fit relationship with the test tube 7. The bottom outer edges of the two expansion wings 6 are between the inner and outer edges of the up...

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Abstract

The invention relates to the technical field of vacuum blood collection, in particular to a loaded slope-expansion-type cap plug fastening mechanism comprising a fastening cap, a splash-proof cap, clamping rings, a rubber plug, pressure cylinders, expansion wings and a test tube, wherein a pair of expansion wings with slopes is arranged at the upper end of the rubber plug; the two expansion wings and the rubber plug are made of butyl rubber and are integrated; the fastening cap is a rotation body with an axial section in the shape of a pair of n; the outer side wall of the fastening cap is sleeved on the outer side wall of the splash-proof cap and is combined with the outer side wall of the splash-proof cap through screw threads; the pressure cylinders pass through round holes in the top of the splash-proof cap; and the bottom ends of the pressure cylinders are pressed on the slopes of two expansion wings. According to the invention, the splash-proof cap and the rubber plug are locked in an axial direction, and the defects of easy sliding of the existing splash-proof cap and rubber plug are overcame. Meanwhile, the loading type slope-expansion-type cap plug fastening mechanism has the advantage of simplicity and convenience in assembling.

Description

technical field [0001] The invention relates to the technical field of vacuum blood collection, in particular to a loading type inclined plane expansion cap fastening mechanism. Background technique [0002] Existing vacuum blood collection tubes usually consist of three parts: a test tube, a butyl rubber stopper plugged in the test tube mouth, and a splash-proof cap sleeved on the butyl rubber stopper. When the doctor takes the blood sample in the blood collection tube, he needs to pull out the rubber stopper from the tube mouth first. When the rubber stopper is pulled out of the test tube, the atmospheric pressure makes the outside air rush into the test tube quickly, which will cause the blood sample in the tube to leak out of the tube mouth. Splash outwards, and the splash-proof cap plays a role in blocking the splash of blood samples and protecting the safety of the laboratory personnel. [0003] However, in the prior art in this field, the bonding force between the sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/154A61J1/14A61J1/05
Inventor 许小玲
Owner 南通港闸船舶制造有限公司
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