Intelligent control method for refill-type screw insulin injection pump

An intelligent control method for a refill-type screw insulin injection pump, characterized by comprising a housing, a refill injection mechanism, a primary telescopic screw mechanism, a secondary telescopic screw mechanism, a power device, a power supply module and an intelligent control module;

• the refill injection mechanism, the primary telescopic screw mechanism and the secondary telescopic screw mechanism are all coaxially and vertically disposed on a left side portion inside the housing, the power device, the power supply module and the intelligent control module are all disposed on a right side portion inside the housing, the power device is in transmission connection with the primary telescopic screw mechanism, the power device drives the primary telescopic screw mechanism to telescope, the secondary telescopic screw mechanism is installed inside the primary telescopic screw mechanism and is in transmission connection with the primary telescopic screw mechanism, the primary telescopic screw mechanism drives the secondary telescopic screw mechanism to telescope, the refill injection mechanism is disposed on an upper portion of the secondary telescopic screw mechanism and is connected to an telescopic end of the secondary telescopic screw mechanism, a key operation module is disposed on the housing, a sensor assembly is disposed on the primary telescopic screw mechanism, the power supply module supplies power to the power device and the intelligent control module, and the intelligent control module is in signal connection with the power device, the key operation module and the sensor assembly, respectively;
• a bottom of the housing is open and fixedly connected to a bottom cover, an injection cartridge similar to a pen holder structure is integrally formed on a left side of an interior of the housing in a vertical direction, an upper end of the injection cartridge penetrates upwards through a top of the housing upwards, a lower end of the injection cartridge extends downwards to a lower left portion of the housing, an inner electrical cavity is formed inside a lower right portion of the housing, the power supply module and the intelligent control module are disposed inside the inner electrical cavity, and the power device is disposed inside the upper right portion of the housing;
• characterized in that the intelligent control method comprises the following steps:
• step (I). starting the refill-type screw insulin injection pump, operating the key operation module to enable the intelligent control module to control the power device to work, and to enable the power device to drive the primary telescopic screw mechanism and the secondary telescopic screw mechanism to telescope, and allowing prefabricated liquid insulin medicine to be filled into the refill injection mechanism;
• step (II). controlling the power device to work through the intelligent control module, and driving the primary telescopic screw mechanism to extend first through the power device;
• when the primary telescopic screw mechanism extends to a limit, the sensor assembly transmits a signal to the intelligent control module, and the intelligent control module controls a rotational speed of the power device to be slowed down to reduce impact force of the primary telescopic screw mechanism, the secondary telescopic screw mechanism then starts to extend until it extends to a maximum limit position, and the intelligent control module controls the power device to stop;
• and in the extension process of the primary telescopic screw mechanism and the secondary telescopic screw mechanism, the refill injection mechanism performs the injection of liquid insulin medicine;
• and
• step (III). repeating the step (I) upon completion of the injection of liquid insulin medicine, and refilling liquid insulin medicine to prepare for a next injection.