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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.

Escalon Medical Corp. engages in the development, manufacturing, marketing, and distribution of medical devices and pharmaceuticals in the area of ophthalmology in the United States and internationally. It offers A-Scan, which provides information about the internal structure of the eye; B-Scan, a diagnostic tool that supplies information to physicians where the media within the eye are cloudy or opaque; UBM, a high frequency/high resolution ultrasound device, which provides detailed information about the anterior segment of the eye; and Pachymeter that measures the thickness of cornea. The company also provides Ispan Intraocular Gases, such as C3F8 and SF6 that are used by vitreoretinal surgeons as a temporary tamponade in detached retina surgery; and AXIS Image management system for managing ophthalmic diagnostic images through the web browser from various devices. In addition, it markets disposable surgical packs used in vitreoretinal surgery, including packs that aid surgeons in the process of injecting and extracting silicone oil. Further, the company engages in the manufacturing and distribution of patented disposable universal gas kit, which delivers the gas from the canister to the patient. It sells its products to medical institutions through independent sales representatives, network of distributors, and internal sales employees. Escalon Medical Corp. was incorporated in 1987 and is headquartered in Wayne, Pennsylvania.

Heart Tronics, Inc., a medical device company, engages in the research, development, and marketing of medical devices in the United States. Its medical devices are used to monitor and measure physiological signals in order to detect diseases that impact an individual's health. The company offers Fidelity 100 Monitor System, an integrated system in which its component Model 100 Patient Module collects, processes, and amplifies electrocardiogram (ECG) signals from that patient through a set of 10 electrodes that are wirelessly transmitted to the laptop computer. Its products in the development stage include Fidelity 350 Holter Monitor, an ambulatory Holter monitor that collects ECG data of arrhythmia and transient heart disease, while the patient carries out daily activities away from the physician's office or hospital. The company's products in the development stage also consist of Fidelity 200 Event Recording System/Heart Tempo Card, a non-prescription heart monitoring device, which is used as an early-detection device by patients who desire to monitor their condition. Its products also include Cardiac Vest, a lightweight, close-fitting vest or undergarment made of stretchable material in which the electrodes are stitched into the fabric; and Fidelity 400 Intracardiac Monitor that applies its proprietary physiological signal acquisition and amplification technology to read intracardiac signals procured from intracardiac catheter. The company was formerly known as Signalife, Inc. and changed its name to Heart Tronics, Inc. in November 2008. Heart Tronics, Inc. was incorporated in 1987 is headquartered in Studio City, California.

Ivivi Technologies, Inc. engages in the design, development, and commercialize of proprietary electrotherapeutic technologies for the non-invasive treatment of acute and chronic disorders of soft tissue. The company was founded on March 9, 1989 and is headquartered in Northvale, NJ.

Trimedyne, Inc. manufactures and sells lasers, and disposable and reusable fiber-optic laser devices for use in the medical field. It offers lasers, fibers, needles, and switch tips for use in orthopedics, urology, ear and nose surgery, throat surgery, gynecology, gastrointestinal surgery, general surgery, and other medical specialties. The company also provides 80 watt and 30 watt holmium lasers, and side firing laser needles to treat herniated or ruptured spinal discs. In addition, it engages in the provision of services, and rental of lasers and other medical equipment to hospitals and surgery centers on a fee-per-case basis. The company operates in Asia, Europe, Latin America, the Middle East, Australia, and internationally. It markets its products through commission sales representatives in the United States and independent distributors internationally. Trimedyne, Inc. was founded in 1980 and is based in Irvine, California.