Sansure Biotech Inc.

Hunan Biometa Intelligent Manufacturing Technology Co., Ltd

Sanway Gene Tech Inc.

Lizhong Dai

Xiaomei Ren

Xun Zhong

Yaping Xie

Xu Fan

Guo Fu

Deyong Tan

Hongjian Zhang

Long Peng

Ling Wu

Zhenfan Cui

Jiangang Ling

Xiaoliang Chen

Jia Liu

Kang Wu

Jin Yan

Qingzhi Sun

Xing Cheng

Weimin Miao

Xinwu Guo

Bozhi Ji

Zhongping Deng

Medical or laboratory diagnosis device

Disclosed are a constant-current control circuit and a method for constant-current control. The circuit includes: a load module, including a plurality of load units connected in parallel; a controller, connected to each load unit of the load units and configured to output a first level signal to the load unit; and a constant-current control module, connected to the controller and further connected to each load unit of the load units via at least one divided resistor, configured to receive a first voltage signal sent by the controller, and generate a second level signal and a second voltage signal according to the first voltage signal and output the second level signal and the second voltage signal to the load module.

Constant-current control circuit and method for constant-current control

A rapid amplification method for a nucleic acid of hepatitis B virus, comprises the following steps: mixing a sample containing hepatitis B virus with a nucleic acid releasing agent, and adding a PCR premix to obtain a reaction solution, the PCR premix comprising deoxyribonucleoside triphosphate, an upstream primer as shown in the sequence SEQ ID NO: 1, a downstream primer as shown in the sequence SEQ ID NO: 2, a DNA polymerase and an amplification buffer; placing the reaction solution in a PCR reaction tube so that the reaction solution is in a form of a thin film with a thickness of 0.1 mm or less; performing PCR amplification under the following reaction condition: pre-denaturation at 90 to 100° C. for 10 s to 600 s, denaturation at 90 to 100° C. for 0 to 1 s, and annealing and extending at 50-65° C. for 0 to 1 s.

Methods for the rapid amplification of hepatitis B virus nucleic acid

Automatic nucleic acid detection analyzer

The present application provides a magnetic bead-based nucleic acid extraction apparatus including a well plate, a magnetic attraction mechanism, a position moving mechanism, and an oscillation mechanism, a supporting base, and a fixing base disposed on the supporting base. The magnetic attraction mechanism includes a magnetic bar fixing base and a magnetic bar movably disposed on the magnetic bar fixing base. The position moving mechanism includes a ball screw and a driving motor; two ends of the ball screw are respectively connected to the magnetic bar fixing base and the driving motor. The oscillation mechanism includes a carrier and a main oscillation unit connected to the carrier. The main oscillation unit includes a motor spindle, an eccentric column, and a connecting base.

Magnetic bead-based nucleic acid extraction apparatus and use method

Growing community of inventors

Changsha, China

Lizhong Dai