Abstract: A medical infusion apparatus with infusion bottle having inbuilt balloon is disclosed, wherein a polyvinyl chloride plastic capsule or spherical balloon is built in the production of infusion bottle, glass bottle, polypropylene (PP) plastic bottle, polyvinyl chloride (PVC) plastic capsule, non-polyvinyl-chloride polyolefin infusion soft bag, and the PVC plastic capsule or spherical balloon is elastic, uniformly distributed with 6 pinholes on a surface thereof, has a volume of 10% of a liquid capacity of the infusion bottle or infusion bag, and is disposed in the infusion bottle or infusion bag in a fixed state or an unfixed natural state; the infusion bottle or infusion bag is injected with a base liquid during production, and also the plastic capsule or spherical balloon is naturally filled with the base liquid.

Abstract: A device and method for detecting an absolute multi-turn rotation angle. The device includes a housing, a cover plate and a rotating shaft. The rotating shaft is fixed with a main gear, which is meshed with driven gears including a large driven gear and a small driven gear. The main gear is externally meshed with the large driven gear. The driven gears are connected with a two-stage speed reduction device which enables the rotating shaft to rotate multiple circles to slow down to a circle-number gear and enables the circle-number gear to rotate one circle only. Both driven gears and the circle-number gear are provided with bearings. The bearings have magnets therein, and the two magnets are relatively fixed with the driven gears and the circle-number gear, respectively. The top edges of the bearings fit with a printed circuit board, angle sensing chips which are fixed on the printed circuit.

Abstract: The invention provides a device and method for detecting an absolute multi-turn rotation angle. The device comprises a housing, a cover plate and a rotating shaft, the rotating shaft being placed go through the housing.