Air pump assembly, gauge head mechanism, wearable device, and blood pressure detection apparatus and method

Abstract

An air pump assembly (220), a gauge head mechanism (200), a wearable device (10), and a blood pressure detection apparatus and method. The air pump assembly (220) comprises: an air pump (221), a first main control valve (222), a second main control valve (223), and an air release valve (224). The air pump (221) is in communication with the first main control valve (222) and the second main control valve (223) by means of a main air path (2201), and is provided with a first vent port (2211) in communication with the main air path (2201) and the external atmosphere, and the first vent port (2211) is openable or closable. The first main control valve (222) is provided with a first air port (2221) in communication with the main air path (2201) and a first external air path (202), and the first air port (2221) is openable or closable. The second main control valve (223) is provided with a second air port (2231) in communication with the main air path (2201) and a second external air path (203). The second air port (2231) is openable or closable. The first external air path (202) is independent of the second external air path (203). The air release valve (224) is provided with a second vent port (2241) in communication with the first external air path (202) and the external atmosphere, and the second vent port (2241) is openable or closable. The air pump and the air release valve can serve as backup valves for each other to perform air release, so that the first external air path has a redundant air release path, thereby improving the use safety of the air pump assembly.

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