Medical Product Manufacturing News announced that ST Microelectronics is developing ultra-low-power Systems On Chip (SOCs) suitable for implantable medical devices. ST Microelectronics’ 65nm features a Vt of only 0.6V that can be used very near threshold. The REISC processor consumes barely 10.8pJ/cycle at 0.6V. This type of technology will certainly enable many new implantable devices that must operate at extremely low powers and squeeze every bit of juice out of their batteries or energy-harvesting means. Click here for link to article.
Intermedics’ next-generation pacing platform would have been full of neat features such as: hemodynamic sensing (impedance-based hemodynamic sensor), autocapture (capture verification), autothreshold (self-tuning based on automatic strength-duration curve generation), high-quality digital telemetry, large-volume memory for electrogram storage, non-volatile memory for self-recovery and patient information, advanced noise detection, etc. My favorite feature though was “Patient Alert”. That saddle-shaped electrode in the picture was used to stimulate the patient’s pectoral muscles whenever the pacemaker wanted to alert the patient of a problem (e.g. low battery, fractured lead, etc.). The project was canceled when Guidant (now Boston Scientific) purchased Intermedics in 1998.
MetaCure’s TANTALUS II device is an advanced implantable electrical stimulator used to apply gastric stimulation. It works by enhancing the activity of gastric muscles only when the patient eats, which modifies hormone secretion, favorably affecting glucose and fat metabolism. At the same time, the stimulation causes the patient to feel satiated sooner and consume less food. The result is an improvement in blood glucose levels, which is often accompanied by weight loss, and reduction of blood pressure, waist circumference and blood lipid level. Continue reading
Impulse Dynamics’ OPTIMIZER™ III Implantable Pulse Generator delivers Cardiac Contractility Modulation (CCM), non-excitatory electrical signals during the myocardial absolute refractory period in synchrony with locally sensed electrical activity. CCM signals are intended to treat patients with symptomatic heart failure despite appropriate medical treatment. Continue reading
Welcome to implantable-device.com, a blog dedicated to professionals interested in the fascinating world of active implantable medical devices!
Let me tell you a bit about myself: I have over twenty-five years of experience in the design of Medical Electronic Instrumentation, most of it developing active implantable medical devices. In addition to over 40 papers and 80 patents on implantable medical devices, I am the lead author of the books “Design and Development of Medical Electronic Instrumentation”, “Exploring Quantum Physics Through Hands-On Projects,” and “Exploring Ultraviolet Photography – Bee Vision, Forensic Imaging, and Other Adventures in Ultraviolet Photography.”
Please contact me if you would like to contribute to the blog, correct information that you find in these pages, make a news release, or if you have a picture of an implantable device that you would like to share with everyone else.
I hope that you enjoy reading and participating in this blog!
David Prutchi, Ph.D.