A Hearing Instrument or aid is an electroacoustic body-worn apparatus which typically fits in or behind the wearer's ear, and is designed to amplify and modulate sounds for the wearer. The devices include the bone anchored hearing aid and cochlear implant. Recent hearing aids include wireless hearing aids. One hearing aid can transmit to the other side so that pressing one aid's program button simultaneously changes the other aid and both aids change background settings simultaneously. FM listening systems are now emerging with wireless receivers integrated with the use of hearing aids.

Hearing Instrument Dryer is an apparatus for removing moisture from electronic devices such as hearing aids, using a desiccant material. The desiccant material is regenerated in place with heat from an embedded heater when the apparatus is open to the atmosphere. Drying of the hearing aids takes place when the hearing aids are placed in the apparatus and it is closed. Heat is not applied during drying to avoid potential damage to the hearing aids or other electronic device.

The heart catheter is a thin flexible tube. It is threaded through a vein or an artery into the heart. It allows the pressure to be measured at different sites in the heart and circulation and also permits blood samples to be taken to check oxygen levels at various places in the heart/lungs.

A heart CT scan is a form of the familiar CT (or CAT) scans, which captures cross-sectional images of the heart at sub-second rates. This unique CT technology allows the detection of small amounts of calcium in the coronary arteries.

Heart monitor is a bare-bones CPU monitor that displays a beating heart. It is designed for various diagnostic, emergencies and monitoring service applications. It comprises a complete range of personal, 1-12 lead Tran telephonic devices for variable remote diagnostic and emergency service applications.