The RM4 platform is a pulsatile hypothermic perfusion system that circulates oxygenated preservation solution through donor kidneys during transport and storage. The system pairs the RM4 console with single-use sterile cassettes, temperature control, and pressure and flow monitoring for transplant teams.
Waters complements the platform with preservation solutions, accessories, training, and field service delivered to hospitals and organ procurement organizations. The business-to-business model centers on device sales plus recurring cassette and solution revenue with ongoing technical support.
Waters Medical Systems serves kidney transplant teams, organ procurement organizations, and transplant centers that need extended preservation windows for donor organs. Demand follows deceased-donor kidney transplant volumes and broader adoption of machine perfusion across North America.
Its portfolio also covers static preservation solutions for liver, pancreas, and heart programs, with distribution reaching international transplant markets through the IGL-CAIR Group. Growth tracks transplant activity, perfusion guideline uptake, and replacement cycles for hospital perfusion equipment.
The RM4 design emphasizes pulsatile hypothermic oxygenated perfusion with continuous pressure and flow visibility for donor kidneys. Portable operation, cassette-based sterility, and integrated monitoring support transport teams managing extended preservation times.
Backing from the IGL-CAIR Group pairs the Rochester manufacturing base with an established preservation-solution portfolio and service network. Transplant programs gain a combined device, consumable, and support offering rather than a standalone pump purchase.

Waters Medical Systems of Rochester Minnesota is the North American division of IGL supplying organ preservation technologies.