A time-delayed pressurization pipette for biomedical laboratory

Abstract

The invention relates to the field of biomedical experimental instruments, and discloses a time-delayed pressurization pipette for biomedical laboratories, which includes a pipette body, and a pipette needle is connected to the bottom of the pipette body. The bottom of the inner cavity of the pipette tube is provided with a positioning and pressure-increasing tube, one side of the positioning and pressure-increasing tube is provided with a through groove communicating with the pipette needle, and the other side of the positioning and pressure-increasing tube is provided with an inner groove. The biomedical laboratory uses a time-delayed pressure-replenishing pipette, through the structural design of positioning the pressure-replenishing tube under the negative pressure suction tube, and the self-rotating connection mechanism between the push shaft and the pumping piston, the pipette is used for quantitative transfer. During the solution process, the upper magnetic plate is used to act on the lower magnetic plate first, so that the lower magnetic plate moves down until the upper magnetic plate rotates to the other side, and the lower magnetic plate moves upward and resets under the action of the elastic force, so as to facilitate the extraction of the solution. , The exhaust is more thorough, which improves the accuracy of the solution transfer volume.

Description

technical field [0001] The invention relates to the field of biomedical experimental instruments, in particular to a time-delay pressure supplement pipette for a biomedical laboratory. Background technique [0002] Biomedical technology is a bioengineering method that includes the research and utilization of genes, viruses, genetic methods, virus methods, cell culture, vaccine production, xenotransplantation, engineering, drug delivery, and biological sensing. The use of medical biotechnology can greatly improve human health. At the medical level, biomedical research is inseparable from biomedical experiments. Quantitative pipettes are commonly used instruments in biological laboratories. They are used to transfer microbial solutions for experiments. The accuracy of the transfer volume determines the accuracy of the experimental results. [0003] However, during the use of existing biomedical laboratory pipettes, when using the pipette to discharge the solution, due to the v...

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Problems solved by technology

[0003] However, during the use of existing biomedical laboratory pipettes, when using the pipette to discharge the solution, due to the viscosity of part of the microbial solution, part of the solution remains in the pipette needle of the pipette, which cannot be completely eliminated. , so that the loss of the solution is large during transfer, which affects the accuracy of the experimental results, and requires the experimenter to keep pressing the pipette to wait for the dripping of the microbial solution, resulting in a decrease in efficiency. Incomplete gas, resulting in a smaller volume of extracted solution than the set value, which also affects the accuracy of subsequent experimental results

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