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

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Home Articles posted by David Prutchi (Page 3)
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Monash University in Australia Starts Test of Direct-to-Brain Visual Prosthesis Chips

Engineers from the Monash Vision Group (MVG) have begun trialling the ASICs for a direct-to-brain visual prosthesis that is expected to enter human clinical trials in 2014. The prosthesis will consist of a tiny camera mounted into a pair of glasses, which acts as the retina; a pocket processor, which takes the electronic information from

 
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Magnetically-Coupled Motor/Generator Transfers 100 mW to Implant at 50 cm Range

Scientists at the Fraunhofer Institute for Ceramic Technologies and Systems developed a magnetically-coupled motor/generator system that they claim is able to transcutaneously transfer 100 mW to an implant up to 50 cm away. In the external power-transfer module, a rotating magnet driven by an EC motor generates a magnetic rotary field. A magnetic pellet in

 
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John Hopkins Researcher Develops New Early-Warning Seizures Detector with Low False-Positive Rate

Johns Hopkins’ Sridevi V. Sarma, an assistant professor of biomedical engineering, has devised new seizure detection software that, in early testing, significantly cuts the number of unneeded brain-stimulation therapy that an epilepsy patient would receive. According to Sarma, “These devices use algorithms—a series of mathematical steps—to figure out when to administer the treatment,” Sarma said. “They’re

 
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St. Jude Seeks Retraction of Heart Rhythm Journal Manuscript by Dr. Robert Hauser Regarding the Failure of Riata and Riata ST Implantable Cardioverter-Defibrillator Leads

St. Jude announced it is seeking a retraction of the manuscript accepted for publication in the Heart Rhythm Journal by Dr. Robert Hauser, et al., titled, “Deaths Caused by the Failure of Riata and Riata ST Implantable Cardioverter-Defibrillator Leads.” St. Jude claims that the research performed by Hauser undercounted and excluded MAUDE data reports for

 
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St. Jude Warns Physicians of Potential Problem with QuickSite and QuickFlex LV CRT Leads

St. Jude announced it is proactively informing physicians about visual observations of externalized conductors on the silicone end of QuickSite® and QuickFlex® Left-Ventricular Leads, used to connect Cardiac Resynchronization Therapy devices to the heart. The announcement noted that there have been no reports of patient injury or loss of therapy due to externalized conductors in

 
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St. Jude Medical Announces Clinical Benefits of Quadripolar CRT Pacing at ACC

St. Jude Medical announced that clinical findings on quadripolar pacing will be presented at the 61st Annual Scientific Sessions of the American College of Cardiology (ACC, Chicago, March 24-27 2012). According to St. Jude’s announcement, quadripolar pacing allows physicians the ability to use multisite left-ventricular (LV) pacing.  Studies that examined the role of multisite pacing in improving hemodynamics and

 
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FDA AIMD PMA/Supplement Approvals for January

FDA released its PMA/Supplement approvals for January.   The edited version below has been edited to include only AIMDs.  It is not the full list, and should be used only for general information purposes.

 
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Cool Reed Switch Manufacturing Video

Magnetic reed switches are used in active implantable medical devices as a simple way of placing the device in a known operational mode when a programmer is not available.  For example, placing a magnet on a pacemaker sets it to VVI mode with a manufacturer-specified set of parameters.  In other devices (e.g. implantable cardioverter/defibrillators), placing a

 
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ImThera Receives CE Mark for the Aura6000 System to Treat Obstructive Sleep Apnea

  ImThera Medical announced this week that it received the CE Mark for the Aura6000 System to Treat Obstructive Sleep Apnea.

 
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Boston Scientific to Acquire Cameron Health for $150M Up-Front + $150M Upon FDA Approval

Boston Scientific announced the exercise of its option to acquire Cameron Health.  Cameron Health developed the world’s first and only commercially-available subcutaneous implantable cardioverter defibrillator – the S-ICD® System that I blogged about a few weeks ago. The agreement calls for an upfront payment of $150 million, payable upon transaction closing, an additional potential $150

 
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Medtronic Receives CE Mark for CapSure Sense MRI™ SureScan® Pacing Leads

Medtronic today announced the receipt of CE Mark and launch of the CapSure Sense MRI™ SureScan® pacing leads, which are approved for use during MRI procedures.  The newly approved leads are the smallest MR–Conditional leads available in the world with a 5.3 French isodiametric lead body.  The new leads are passive-fixation leads.  Previously approved Medtronic MR–Conditional leads

 
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News from Stanford: Modelling Tissue as a Dielectric Shows Feasibility of Inductive Power Transfer at 1 GHz

Stanford Engineering assistant professor  Ada Poon demonstrated a tiny, wirelessly powered, self-propelled medical device capable of controlled motion through blood.  The device drives electrical current directly through the fluid, which in the presence of an external magnetic field creates a directional force that pushes the device forward. This type of device is capable of moving at

 
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Medtronic’s Q3 AIMD Earnings: CRM 3% Down, Neuromodulation 4% Up

Today Medtronic announced financial results for its third quarter of fiscal year 2012, which ended January 27, 2012. According to the report: “CRDM third quarter revenue of $1.192 billion decreased 2 percent as reported or 3% on a constant currency basis. Third quarter revenue from ICDs was $674 million,  down 9 percent on a constant

 
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MicroCHIPS Announces Clinical Results for First Successful Human Trial of Programmable Microchip-Based Drug Delivery Device

Last month I posted some background on MicroCHIPS, the MIT spinoff to develop implantable sensors and drug-delivery devices.  I concluded that post with the February 2011 announcement that MicroCHIPS started its clinical trial to assess the pharmacokinetics of long-term parathyroid hormone (hPTH 1-34) delivery in women with osteoporosis. MicroCHIPS announced today the results of the first successful human

 
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iPacemaker Implantable Pacemaker/ICD Database for the iPhone

My friend and colleague Dr. Irit Yaniv alerted me to this iPhone app that was just released.  It is an implantable pacemaker and defibrillator database that, according to its author, displays up to 70 parameters for each model, includes battery and longevity data, and links directly to product manuals.

 
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