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High-precision sampler for medical experiments

A high-precision technology for medical experiments, applied in the field of high-precision samplers for medical experiments, can solve the problems of solution calculation, low measurement accuracy, and inability to truly reflect the volume of the solution.

Active Publication Date: 2020-10-30
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the most widely used sampler in the medical field is the needle sampler, but the scale engraved on the outer tube of this sampler cannot truly reflect the volume of the solution extracted, because the scale measures only the volume of the solution in the inner liner tube. The volume of the solution does not take into account the solution inside the needle tube, so the measurement accuracy is low

Method used

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  • High-precision sampler for medical experiments
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  • High-precision sampler for medical experiments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see Figure 1-6 , a high-precision sampler for medical experiments, comprising an overtube 1, a twitch column 4, a needle tube 13 and a handle 9, one end of the twitch column 4 is fixedly connected with a handle 9, and the other end extends into the inner wall of the overtube 1, so The front end of the outer sleeve 1 is also connected with a needle tube 13 through a connecting pipe 14, and an inner liner 2 is also arranged between the outer sleeve 1 and the twitching column 4, and the front end of the inner liner 2 is connected to the outer sleeve 1, And it is connected through the needle tube 13, and the inside of the liner tube 2 is slidably fitted with a twitching post 4, the circumferential surface of the twitching post 4 is also bonded with a second sealing ring 6, and the front end is also bonded with a first sealing ring. Ring 7; the circumferential surface of the twitching column 4 is also fixedly connected with a measuring ruler 5, and there is a gap between th...

Embodiment 2

[0029] In order to improve the sampling efficiency of the present invention, especially on the basis of embodiment 1, improvements have been added, and the improvements are: please refer to Figure 1-6 The front end of the outer sleeve 1 is also provided with a dander sampling mechanism 8, the dander sampling mechanism 8 includes a rotating disk 81, a moving disk 82 and a clamping rod 84, and the inner side of the rotating disk 81 is rollingly connected with a ball 85. Connecting disk 86, described connecting disk 86 is fixedly connected on the end face of outer casing 1, and the quantity of described ball 85 has multiple; Also has a draw-in groove in described rotating disk 81, and draw-in groove and one end of draw bar 84 The other end of the clamping rod 84 is fixedly connected to the movable plate 82, and there are multiple clamping rods 84; the end surface of the movable plate 82 is also fixedly connected with several sampling claws 83.

[0030] Each of the sampling claws...

Embodiment 3

[0034] The present invention also designs a kind of needle changing mechanism on the basis of above-mentioned embodiment, please refer to Figure 1-6, also includes a needle changing mechanism, and the needle changing mechanism includes a positioning disc 11, a needle cover 12, a needle tube 13 and a positioning rod 10, and the middle rotation of the positioning disc 11 is connected with a chuck 15; one end of the positioning rod 10 is worn Set in the small hole opened on the handle 9, the other end is fixedly connected to the chuck 15; the peripheral surface of the positioning plate 11 is detachably connected with a needle cover 12, and the number of the needle cover 12 is multiple ; The needle sheath 12 is pierced with a needle tube 13 .

[0035] The end surface of the positioning plate 11 is provided with several locking grooves 16, and the several locking grooves 16 are evenly distributed on the positioning plate 11; the end surface of the chuck 15 is also fixedly connecte...

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Abstract

The invention discloses a high-precision sampler for medical experiments. The high-precision sampler comprises an outer sleeve, a drawing column, a needle tube and a handle, a lining tube is further arranged between the outer sleeve and the drawing column, the front end of the lining tube is connected to the outer sleeve and connected with the needle tube in a penetrating mode, the drawing columnis arranged in the lining tube in a sliding fit mode, a measuring ruler is further fixedly connected to the circumferential face of the drawing column, and metering scales are further engraved on themeasuring ruler. The front end of the needle tube is completely immersed into the solution; the needle tube is prevented from mistakenly pumping air in the sampling process; the handle is slowly pulled, and drives the drawing column to slide along the inner wall of the lining pipe in an attached mode. When a certain amount of solution is extracted, the scales on the measuring ruler are observed, at the moment, no air exists in the lining tube, the moving distance of the drawing column relative to the lining tube can be substituted into a volume formula, the moving volume of the drawing columncan be calculated, and the obtained volume is the volume of the extracted solution, namely the volume sum of the solution in the needle tube and the solution in the lining tube.

Description

technical field [0001] The invention relates to a sampler, in particular to a high-precision sampler for medical experiments. Background technique [0002] At present, the most widely used sampler in the medical field is the needle sampler, but the scale engraved on the outer tube of this sampler cannot truly reflect the volume of the solution extracted, because the scale measures only the volume of the solution in the inner liner tube. The volume of the solution does not count the solution inside the needle, so the measurement accuracy is low. Therefore, a high-precision sampler is needed, which is convenient for users to study and sample. Contents of the invention [0003] The purpose of the present invention is to provide a high-precision sampler for medical experiments to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] A high-preci...

Claims

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Application Information

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IPC IPC(8): G01N1/14
CPCG01N1/14
Inventor 李海军刘菲徐红梅尹嘉宁高艳丽王中峰李艳娇
Owner JILIN UNIV