Michigan Instruments, Inc. designs and manufactures medical equipment related to the fields of cardiovascular medicine, cardiopulmonary resuscitation (CPR), and respiratory therapy. It offers Life-Stat and Thumper that are mechanical CPR devices for chest compression and ventilations to patients in a state of acute cardiac arrest; and test lung products, including adult/infant, single lung, dual adult, and breath simulation. The company sells its products through distributors in the United States, Canada, Japan, Taiwan, China, Singapore, Korea, Israel, Ireland, the United Kingdom, and other parts of Europe. Michigan Instruments, Inc. was founded in 1963 and is based in Grand Rapids, Michigan