A blog about what is new (and old) in the world of active implantable medical devices 

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Home Implantable Components Power Sources Archive for category "Rechargeable Batteries"
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Pacesetter’s 1973 Rechargeable Pacemaker

Yesterday I visited the Udvar-Hazy Center of the Smithsonian Air & Space Museum in Chantilly, VA.  There I found this demo rechargeable pacemaker being displayed as a spinoff of NASA’s technology with the following explanation: I can’t remember exactly where I found the picture of a Pacesetter model BD102 VVI, but the story behind it

 
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Quallion Being Acquired by EnerSys. Medical Battery Technology Said to be Key Strategic Priority.

EnerSys, a global leader in stored energy solutions for industrial applications, announced that it has entered into an agreement to acquire Quallion LLC, a manufacturer of lithium ion cells and batteries for high integrity applications for $30 million.   Quallion’s innovative cells – especially rechargeable Zero-Volt ™ lithium-ion batteries – are used in quite a few implantable

 
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Increase in Temperature from AIMDs Dissipating Endogenous Heat

Active Implantable Medical Devices generate heat as a result of resistive losses in their circuitry, exothermic reaction in their batteries, eddy-current heating due to inductive recharge, friction between mechanical components, etc.  The European Standard which regulates AIMDs limits the heating of the outer surface of an AIMD to 2ºC above normal body temperature.  Despite the

 
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WiTricity Developing Long-Range Transcutaneous Energy Transfer Solutions for AIMDs

This month’s Medical Device and Diagnostic Industry  (MD+DI) magazine carried an interesting article by David Schatz – WiTricity’s VP Sales – on their efforts to develop highly resonant wireless power transfer technology for use in AIMDs.  The article is available online at http://www.mddionline.com/article/wireless-power-medical-devices. The article mentions the work that WiTricity has been doing with Thoratec to

 
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ImThera Medical’s Aura6000 Implantable System for the Treatment of Sleep Apnea

The aura6000 is based on ImThera’s Targeted Hypoglossal Neurostimulation (THN) Sleep Therapy™ delivering neurostimulation to the tongue during sleep. The system is comprised of a surgically‐placed multi‐contact electrode specifically designed for the Hypoglossal nerve, and a lead that connects the electrode to a programmable implantable pulse generator (IPG) that is placed in the anterior chest wall.

 
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Tantalus II System for Treating Metabolic Syndrome

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

 
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Impulse Dynamics’ OPTIMIZER III IPG for Treatment of Heart Failure

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.

 
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