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Low sample volume sampler

A technology of sample capacity and sampler, which is applied in the field of medical equipment, can solve the problems of microtube structure, unreasonable size, inability to be placed in automatic detection equipment, and influence of detection results, etc., to avoid blood bubbles, simple structure, and convenient blood collection operation Effect

Active Publication Date: 2022-01-28
WUXI NO 5 PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is made of a material with a good barrier to gas, its absorption and permeability to liquids are very high, which also causes the lack of reagents within the validity period and affects the test results.
And existing microtube can't be put into the automatic detection equipment and use because structure, size are unreasonable, if use the 1.8ml or the 2.7ml standard vacuum blood collection tube that is matched with corresponding instrument, there is a large amount of not added by blood on the top of blood collection tube The full space is called "dead space". A large number of studies have shown that vacuum blood collection tubes with "dead space" will bring serious errors to the measurement results.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] See attached Figure 1-10 As shown, the low sample capacity sampler includes: a main body 20 with an opening above the main body 20, the opening is equipped with a rubber plug 10, the lower part of the main body 20 is equipped with a coaxial auxiliary pipe body 50, the main body 20 is a cylindrical tubular structure, Its bottom has an assembly pipe 23 that is coaxial and smaller in diameter than the main body 20. The assembly pipe 23 is assembled with the auxiliary pipe body 50. The bottom of the assembly pipe 23 has a liquid storage part 40. The liquid storage part 40 includes a liquid storage body communicated with the assembly pipe 23. 41. The liquid storage area of ​​the inner cavity of the liquid storage body 41 decreases from high to low, and the transverse or longitudinal section of the liquid storage body 41 is an inverted triangle. The liquid body 41 has an accommodating cavity, and a light-shielding plate 42 is placed in the accommodating cavity. The light-shi...

Embodiment 2

[0040] The scheme is basically the same as in Example 1, except that the rubber material in the rubber plug 10 is butyl rubber or natural rubber, and a layer of rubber diaphragm 15 is also provided on the rubber plug 10 in the main body 10, and the thickness of the diaphragm is 1-5 mm, preferably The thickness of the diaphragm is 1.5 mm, and the rubber diaphragm 15 provided is used to form a double-layer seal, especially for the pressure reserved in the main body 20, to reduce the pressure loss caused by the unstable sealing of the pressure rubber plug 10, and realize the During the blood collection process, there is a pressure difference between the pressure in the blood vessels of the human body and the reserved pressure in the main pipe body 20, so that the blood is vibrated and sucked into the main pipe body 20. Of course, the function of the rubber diaphragm 15 is not limited to reducing the pressure loss. The rate of pinhole shrinkage and recovery to the original sealed s...

Embodiment 3

[0042] Most of the scheme is the same as in Embodiment 1, except that the liquid storage part 40 is replaced by a cylindrical liquid storage tube;

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Abstract

The invention discloses a low-sample-capacity sampler, which belongs to the field of medical devices. The low-sample-capacity sampler comprises: a main body, a rubber plug is arranged above the main body, and a coaxial auxiliary pipe is assembled on the lower part of the main body, and the main body is cylindrical. structure, the bottom of which has a coaxial assembly pipe with a diameter smaller than the main body, the assembly pipe is assembled with the auxiliary pipe body, the bottom of the assembly pipe has a liquid storage part, the liquid storage part includes a liquid storage body connected to the assembly pipe, and the inner cavity of the liquid storage body The liquid storage area decreases from high to low, and the lateral or longitudinal section of the liquid storage body is an inverted triangle. The outside of the liquid storage body is covered with a limit sleeve. The light-shielding plate is placed, the device of the present invention has simple structure, convenient blood collection operation, good sealing performance, relatively small storage volume to realize low sample sampling, good barrier property to gas, liquid and visible light, and effectively avoids bleeding of blood during the sampling process. foam.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a sampler with low sample capacity. Background technique [0002] As a medical clinical examination, it is the most common way to use vacuum blood collection tubes as containers for collecting blood samples to make test samples. Vacuum blood collection tubes, including test tubes, are already necessary and widely used medical devices in hospitals. A large number of applications of vacuum blood collection tubes provide a very convenient and reliable blood collection method for medical personnel. At present, vacuum collection tubes are mostly light-transmitting single-layer plastic test tubes. Although it is made of a material with a good barrier to gas, its absorption and permeability to liquids are very high, which also causes the lack of reagents within the validity period, which affects the test results. And the existing microtube can't be put into the automatic d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/15
CPCA61B5/150343A61B5/150351A61B5/150755
Inventor 张莹莹裴豪王俊
Owner WUXI NO 5 PEOPLES HOSPITAL