Delayed pressure supplementing pipettor for biomedical laboratory

Abstract

The invention relates to the field of biomedical experiment instruments, and discloses a delayed pressure supplementing pipettor for a biomedical laboratory. The delayed pressure supplementing pipettor comprises a pipettor tube body, the bottom of the pipettor tube body is communicated with a pipetting needle tube, and the bottom of the inner cavity of the pipettor tube body is provided with a positioning pressure supplementing tube; a through groove communicated with the pipetting needle tube is formed in one side of the positioning pressure supplementing tube, and an inner groove is formed in the other side of the positioning pressure supplementing tube. According to the delayed pressure supplementing pipettor for the biomedical laboratory, through the structural design of the positioning pressure supplementing tube below the negative pressure suction tube, in cooperation with a self-rotating connecting mechanism between a push shaft and a pressure pumping piston, in the process thatthe pipettor is used for quantitatively transferring a solution, an upper magnetic plate is used for acting on a lower magnetic plate firstly, so that the lower magnetic plate moves downwards; and after the upper magnetic plate rotates to the other side, the lower magnetic plate moves upwards and resets under the action of the elastic force, and thus the exhaust is more thorough before the solution is extracted, and the accuracy of the solution transfer amount is improved.

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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