4results about How to "Accurate injection volume" patented technology

The pre-filled microneedle injector comprises a needle cylinder, a piston and a needle head, the needle cylinder is of a hollow structure, a limiting ring is arranged at the open end of the needle cylinder, the piston extends into the needle cylinder from one side of the limiting ring and can move up and down in the needle cylinder, a rubber ring is arranged at the bottom end of the piston, and a pushing handle is arranged at the top of the piston; the needle head is fixed to the side, away from the limiting ring, of the needle cylinder and comprises a connecting part and needle tubes, the connecting part extends out of the needle cylinder, and at least one needle tube is embedded into the connecting part in an in-line mode. The syringe is used for injection of biological macromolecular medicine preparations and complex preparations, especially mRNA vaccines or medicine preparations needing to be pre-filled for micro-injection, the hydrophilic film on the inner wall of the needle cylinder enables biological macromolecular medicines such as the mRNA vaccines or the medicine preparations to be stably stored, and the injection efficiency is improved. And through the limiting buckle, the pre-filled microneedle injector cannot leak in the transportation process or the storage process.

The invention discloses an intelligent agricultural water-saving irrigation and fertilization device which comprises a material changing and stirring mechanism, the material changing and stirring mechanism comprises a fertilizer melting water tank, an irrigation switching mechanism is installed on the front portion of the material changing and stirring mechanism, and material storage boxes are fixedly connected to the two sides of the top of the fertilizer melting water tank through supports; the front side of an inner cavity of the material storage box is rotationally connected with a driven rod through a bearing piece. According to the intelligent agricultural water-saving irrigation and fertilization device, the material changing and stirring mechanism and the irrigation switching mechanism are used in a combined mode, through the arrangement of the two mechanisms, different fertilizers can be injected into the fertilizer melting water tank through lifting of an air cylinder, and meanwhile the situation that daily irrigation and storage are affected by fertilizer leakage is avoided; in the process, linkage between the structures can be utilized, a plurality of upper spraying pipes can be synchronously lifted and automatically rotate by a certain angle, and therefore branches and leaves can be sprayed in a large range.

The manual injection acoustic precision control metering method comprises the following steps: rotating the main shell, the ratchet groove collides with the ratchet teeth on the ratchet wheel, the switch sensor and the perception sensor obtain the collision sound and vibration signal, the signal detected by the sound sensor is classified by the MFCC algorithm and DNN, the sound characteristics of the processing and recognition are output, the signal detected by the vibration sensor is classified by the EMD algorithm and CDD, the vibration signal of the processing and recognition is output, and finally the output sound characteristics, the vibration signal and the time difference between the received sound signal and the vibration signal are input into the SVM classifier for final recognition and classification, and whether the manual injection is performed correctly is identified, so that the manual injection can be accurately recorded. The algorithm design for classifying and identifying sound and vibration of the present invention is scientific, and the sound and vibration signals generated during manual injection are intelligently collected and recognized, so that the recording of insulin injection amount is more accurate, and it is more convenient to use and has better universality.

This invention relates to the field of magnetic material manufacturing and discloses an automated production line for preparing permanent magnet ferrites. The production line includes a feeding machine, a ball mill, a discharging machine, a settling tower, a slurry dewatering machine, a material injection mechanism, a mold forming press, a billet extractor, a billet stacking and moving mechanism, a billet conveying line, a roller kiln, and a controller. This automated production line for preparing permanent magnet ferrites features a high degree of automation, fast production speed, and produces higher quality permanent magnet ferrites, making it valuable for widespread application.