• clareThe Early 1960s - Research and Development

    Clare Barkalow (center), who later became founder of Michigan Instruments, Inc., began development of a mechanical CPR device through a joint collaboration of Butterworth Hospital and Lear Siegler.

    1001October 1964 - Model 1001

    Dubbed the ECC (External Cardiac Compressor), the 1001 was one of the first closed-chest heart massage devices ever produced.  Notice the more compact improved design.

    1003August 1969 - Model 1003

    Known as the Life-Aid domestically, the 1003 evolved from the 1001 and development of an adjunct ventilator (dubbed 1002) bringing both together in an "all-in-one" mechanical CPR solution. The Model 1003 was also distributed both domestically and abroad through representatives such as American Optical, Mennen-Greatbatch, Danatron, Siemens AG and Safety Supply.

    1004May 1972 - Model 1004

    The Model 1004 became the first model to be affectionately known as the "Thumper®." This trademark name for the device became a generic term for mechanical CPR throughout the medical community in both the hospital and EMS settings. This model incorporated a color coded piston and determination of A-P compression depth to accommodate delivery of proper compression depths.

    1005January 1985 - Model 1005

    Continuing with the Thumper® brand name, the 1005 used a clear dome with a numbered scale to better facilitate and deliver the proper compression depths. This model also incorporated an improved pneumatic control system, the ability to accommodate increased patient sizes and increased the range of adjustable compression force.

    1007June 1998 - Model 1007

    The design of the Model 1007 combined the control components into a single housing allowing it to carry a smaller 'footprint'. A larger diameter gel based massager combined with a "high energy" compression delivery mechanism were utilized to increase the blood flow with each compression. In 2006 the CC (Continuous Compressions) and CCV (CC w/Ventilation) versions of the 1007 were introduced.

    1008withbbSeptember 2008 - Model 1008

    The Life-Stat® Model 1008 is electronically controlled. In addition to all the other benefits gleaned from the previous models, the electronics provide for multiple modes of operation. It also allows the device to meet current and future AHA guidelines. It is the most capable and lightest mechanical CPR device manufactured by Michigan Instruments providing true hands-free mechanical CPR. In keeping with honoring its loyal customer base, a Model 1007 can be upgraded to a Model 1008 at a fraction of the cost.
  • Michigan Instruments has gone through a lot of changes over the course of time, and here you can get an idea of where we have been and what we have accomplished since forming over 50 years ago.
    1963 Clare Barkalow founded the company as Michigan Instruments in Grand Rapids, Michigan, with a handful of other researchers from Lear Siegler. The automated chest compressor was actually invented in the Advanced Engineering Projects department at Lear Siegler. Its unofficial tradename was the ‘ECC’ for External Cardiac Compressor. Some of the original product testing was done using baboons! A special cage had to be constructed in order to keep and restrain it.
    1965 The ‘ECC’ was brought to the market as the Model 1001 around the same time that CPR itself was first ‘invented’. About 100 systems were manufactured and sold in the U.S. It included a pneumatically powered chest compressor but no ventilator.
    1966 The first published CPR guidelines were released by the National Research Council of the American Heart Association. Clare Barkalow led the way as one of the foremost authorities on CPR.
    1967 Developed Model 1002 which was just a ventilator designed to be used with the Model 1001.
    1968 The Model 1001 and the Model 1002 were combined resulting in the Model 1003 which was the first system to have both a chest compressor and a ventilator. The Model 1003 was marketed and sold through various distributors under their own names. One of these was Dixie U.S.A. Dixie was one of the first sales organizations to market emergency medical products.
    1972 Dixie took over marketing the product exclusively internationally. The Thumper® tradename was introduced.
    1974 The Model 1004 was introduced and the first unit to have a color coded scheme for prescribing chest compression depth based on patient size.
    1976 Medical Device Amendments were passed into law. MII then became obligated to list the device with the FDA.
    1976 Training & Test Dual Adult Lung Model was introduced under the tradename TTL® and VentAid®. It had originally been created around 1968 for use in-house as a development tool to help with the design of the Thumper ventilator.
    1980 Testing of hospital equipment started to be standardized.
    1982 Adult Infant Lung Model introduced as the ‘LifeSpan’ TTL.
    1983 Relocated to 6300 28th Street
    1984 The Programmable Thumper® based on a 6502 embedded microprocessor system was developed and quickly became the standard tool for CPR research.
    1985 The Model 1005 was introduced. This system had an improved pneumatic control system relying on lower presser components and an increased capacity for patient size and chest force.
    1988 First trip to Japan to kickoff a field study and the introduction of the Thumper to the medical community.
    1991 PneuView® DOS software with the electronic instrumentation was introduced.
    1993 Relocated to 4717 Talon Court SE
    1997 PneuView® Windows Software with the electronic instrumentation was introduced. The single lung was invented.
    1998 The Model 1007 was introduced in Japan.
    1999 The Model 1007 was introduced in the U.S.
    2005 The Model 1007 was introduced in France.
    2006 Development of Thumper CC and CCV. The Thumper was introduced in Ireland.
    2008 Development of the Life-Stat™ Model 1008 was completed and released on September 19. This model featured electronic system control and is current with AHA guidelines.