The device consists of an external processor, microphone and battery, and a surgically implanted
internal receiver with electrodes embedded in the cochlea, the tiny snail-shell-shaped organ in the inner ear.
This article takes a look at the surgically implanted
knee, hip and shoulder prostheses, and how cast components are assisting surgeons in rebuilding these parts of the human body.
Unintended blood clotting has thwarted the development of implanted
biological sensors, such as those for detecting gases and acidity in blood, says Meyerhoff.
Some implants deflate (or rupture) in the first few months after being implanted
and some deflate after several years; yet others are intact 10 or more years after the surgery.
Seven months later the patient returned with severe ear pain and purulent otorrhea on the implanted
Millions of mildly nearsighted Americans won a radically new way to improve their vision without glasses or contact lenses Friday: The government approved tiny, transparent rings that are implanted
directly onto the cornea.
Although work on the system is still in its preliminary stages, Langer envisions that the ultrasound-sensitive drug-containing polymer would be implanted
under the skin as a series of microcapsules, each perhaps a few microns in size.
By that time hundreds of thousands of women had had them implanted
The surgically implanted
electronic device bypasses damaged hair cells and stimulates the hearing nerve fibres directly inside the cochlea, providing useful hearing and improved communication abilities to the wearer.
To date more than 8,000 patients have been successfully implanted
with Clearant Process sterile implants supplied by one of the Company's licensed partners.
Freedom Solo(TM) represented an innovation in the heart valve prosthesis arena, due to its unique characteristics of being a totally biological valve, virtually identical to the native valve, which can be easily and quickly implanted
with a single suture line, giving superior results in terms of haemodynamics.
The Learning Retinal Implant has been successfully implanted
in four patients for a duration of up to 20 weeks to date (the first implantation occurred in late-November 2005).