Nissei

Nissei is the commercial brand used by Nihon Seimitsu Sokki, a Japanese medical device manufacturer focused on precision home-use and professional monitoring equipment. The company develops, manufactures, and sells digital blood pressure monitors, pulse oximeters, thermometers, and related healthcare devices, while also supplying products through OEM channels. Its core healthcare franchise is in blood pressure monitoring, where it has been active since the 1960s and markets products for both consumers and clinical settings. Beyond medical devices, the company also has non-healthcare operations in optical equipment such as auto iris components for surveillance cameras. For a biotech or healthcare analyst, Nissei is best understood as an established commercial-stage medtech manufacturer rather than a therapeutics developer.