Aksys Ltd. provides hemodialysis products and services for patients suffering from end-stage renal disease, known as chronic kidney failure. The company offers an automated personal hemodialysis system, known as the Aksys PHD, a Personal Hemodialysis System (PHD System), which is designed to enable patients to perform frequent hemodialysis at alternate sites, such as their own homes. The PHD System is designed to monitor, during the treatment, various vital statistics, including the patient's blood flow rate, the amount of water removed from the patient, the length of the treatment session, and other parameters. It also evaluates the performance of the artificial kidney in removing toxins from the patient's blood prior to each treatment, as well as automatically evaluates the water treatment filters and indicates whether a replacement is required and verifies that safety systems, sensors, and alarms are operating correctly. Aksys Ltd. also provides various services, including the delivery and installation of the PHD System; technical services, including maintenance and repair of the PHD System; delivery of consumables used in dialysis, such as the water purification components and dialysate concentrate; and artificial kidney, and arterial and venous blood tubing. The company markets its products and services, primarily to healthcare providers, such as hospitals, dialysis clinics, managed care organizations, and nephrology physician groups in the United States, the United Kingdom, and Japan. Aksys Ltd. was founded in 1991 and is headquartered in Lincolnshire, Illinois.