36results about How to "Easy to add sample" patented technology

The invention discloses a double centrifugal tube. Two centrifugal tubes are coaxially arranged, the bottom end of one centrifugal tube is in threaded connection with the top end of the other centrifugal tube, the bottoms of the tube bodies are in a conical shape, and the bottom ends of the tube bodies are provided with spherical containing bodies communicated with the tube bodies. The double centrifugal tube is simple in structure, easy and convenient to use and high in centrifugal efficiency.

The invention discloses a cabin door structure. The cabin door structure comprises a sample adding hole formed in a top cover and a cabin door covering the outer side of the sample adding hole, wherein a bulge is arranged on the cabin door; the bulge extends inwards to extend into the sample adding hole when the cabin door covers the sample adding hole; and the distance between the inner side faceof the bulge and the inner side face of the top cover is smaller than the thickness of a sample adding target plate. According to the cabin door structure disclosed by the invention, the distance between the inner side face of the bulge and the inner side face of the top cover is set to be smaller than the thickness of the sample adding target plate, so that when the sample adding target plate isnot correctly mounted, the inner side face of the bulge and the sample adding target plate generate interference, and the cabin door cannot be normally closed; the cabin door structure disclosed by the invention can be used for detecting whether the sample adding target plate is correctly mounted in a target plate groove or not; and furthermore, when a mounting position of the sample adding target plate has a slight error, the bulge can be pressed on the sample adding target plate in a cabin door closing process and the sample adding target plate is pressed to be correct, so that the sample adding target plate is correctly mounted in the target plate groove and the cabin door structure also has the effect of correcting the error.

The invention relates to a method for measuring glycosylated hemoglobin content, which comprises the following steps of: a, uniformly mixing a whole blood sample and hemolytic liquid; b, adding an appropriate amount of hemolyzed sample into latex suspending in glycine buffer solution; c, respectively adding an antibody B reagent and an antibody A reagent after preset time; d, uniformly mixing andreading a scattering value through a specific protein analyzer under the condition of single-wavelength light irradiation; and e, reading the glycosylated hemoglobin content from a standard curve diagram according to the scattering value. The glycosylated hemoglobin content of the blood sample can be directly determined without separately measuring the total hemoglobin content and the glycosylated hemoglobin content of the blood sample by taking fixed-time nephelometry as a detection principle; and antibody working solution does not need preparing in advance, so that the effective service time of the reagents is prolonged, the operating steps are simplified and the measuring time of the sample is shortened.

The invention discloses a closed PCR amplification tube for integrated gene detection, which includes a tube body for containing PCR buffer, a liquid storage pool for containing hybridization buffer, and a cap for sealing the upper opening of the liquid storage pool. The liquid storage tank is put into the upper part of the pipe body, and the upper end of the liquid storage tank is airtightly connected with the opening upper end of the pipe body. The invention not only enables PCR, gene hybridization, and gene detection to be completed in a closed system, avoiding cross-contamination, but also completely isolates the PCR amplification system and DNA hybridization system, and avoids components such as buffers and enzymes in the amplification system The impact on the hybridization reaction greatly improves the accuracy and repeatability of genetic testing. The tube cap in the closed PCR amplification tube of the present invention makes adding samples easier, has stronger sealing performance, and has better detection accuracy.

The invention discloses a closed PCR amplification tube for integrated detection of genes, comprising a tube body for containing PCR buffer, a liquid storage pool for containing hybridization buffer, and a tube with an upper opening of the sealed liquid storage pool Cover, the liquid storage tank is put into the upper part of the tube body, the upper end of the liquid storage tank is airtightly connected with the opening upper end of the tube body, there is a gap between the outer side of the liquid storage tank and the inner wall of the tube body, and the upper part of the liquid storage tank is provided with The through hole that communicates the void with the inside of the liquid storage tank. The invention not only enables PCR, gene hybridization, and gene detection to be completed in a closed system, avoiding cross-contamination, but also completely isolates the PCR amplification system and DNA hybridization system, and avoids components such as buffers and enzymes in the amplification system The impact on the hybridization reaction greatly improves the accuracy and repeatability of genetic testing. The tube cap of the invention makes adding samples easier, has stronger sealing performance, and has better detection accuracy.

The invention discloses a high pressure extrusion and filtration device for liposome. The device comprises a bottomless extrusion filter body, the bottomless extrusion filter body is a cavity with the upper portion in a circular-tube shape and the lower portion in a conical shape, a sample feeding opening is formed in the upper end of the bottomless extrusion filter body, the sample feeding opening is movably connected with a screw cap, the device further comprises a filter bottom, and the filter bottom is a cylinder provided with the bottom, wherein the upper end of the filter bottom is open, a discharging pipe is arranged at the bottom of the filter bottom, centripetal protruding blocks are arranged on the inner surface of the side wall of the filter bottom, and a lower supporting network, a filter membrane and an upper supporting network are movably connected to the protruding blocks in sequence. By means of the device, liposome samples can be extruded multiple times, operation time is shortened, and convenience and high efficiency of large-scale liposome preparation in the laboratory are achieved. High efficiency is particularly embodied when the same sample is in need of multiple times of filtration operation. The device is not prone to air leakage under high pressure gas, and therefore reliability of an extrusion filter is improved. The high pressure extrusion and filtration device is simple in structure, and high temperature sterilization can be conducted on the extrusion filter easily.