Company Information

Michigan Instruments continues to be a pioneer in the respiratory care and emergency medical industries.  The company began to revolutionize these industries in the 1960s and 1970s with the original development of its product lines. 

Today, Michigan Instruments continues to forge ahead as an innovative pioneer.  We developed one of the world’s first commercial mechanical CPR devices under the leadership of Clare Barkalow in 1964.  The unit — originally called the Life-Aid® — quickly gained the trade name of “Thumper®.” 

The Training and Test Lung was developed in the early 1970s to facilitate the development of new Thumpers, but its' relevance as a stand-alone product was quickly recognized.  The Training and Test Lung gained a large following in the biomedical industry as a result of its' precision and reliability.  Both products have since gained a respectable following and international recognition. 

The initial development of our products was only the first step.  Michigan Instruments has been the site of incremental development and constant change through the years.  Today, our test lungs are recognized worldwide by thousands of users.  They are considered the gold standard of respiratory simulation. 

Our mechanical CPR products fully meet the 2010 AHA guidelines and are regularly recognized for initiating ROSC in cardiac arrest patients.  It’s been 49 years since we started setting the bar for the respiratory simulation and mechanical CPR industries, and are proud to say we continue to set it high.  We are proud to say that our units are manufactured and assembled on site at our headquarters in Grand Rapids, Michigan.  We maintain a full-service department, ensuring that all units sent in will be inspected, reviewed and serviced by the same workforce that initially assembled them.  At Michigan Instruments, it is our goal to create precision devices that allow you, our customer, to do your job with excellence and ease. 

Learn more about our products.