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

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Micromagnetic Stimulation as an Alternative to Electrical Stimulation for Implantable Devices? I don’t think so…

The following captured my attention in the announcement of the 11th World Congress of the International Neuromodulation Society, “Technology Transforming Chronic Illness Management.” From June 8 – 13, 2013: “Micro-Magnetic Stimulation (Monday, June 10) – John T. Gale, Ph.D., has demonstrated for the first time that deep brain stimulation with micro-magnets can activate brain cells

 
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Biotronik’s Iforia DF4 ICD/CRT-D CE-Approved as Compatible with MRI

Biotronik announced that it had received CE-approval for the world’s first DF4 ICD/CRT-D series approved for MRI. In addition, this series contains one of the world’s smallest ICDs– the Iforia single chamber ICD. Aside from featuring ProMRI®technology, which allows patients to undergo potentially life saving MRI scans, Iforia also includes the industry standard DF4 connector

 
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Brown University Develops Fully-Implantable Brain-Computer Interface

From Brown University’s press release: “In a significant advance for brain-machine interfaces, engineers at Brown University have developed a novel wireless, broadband, rechargeable, fully implantable brain sensor that has performed well in animal models for more than a year. They describe the result in the Journal of Neural Engineering and at a conference this week.

 
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Medtronic Introduces First Neuromodulation Systems Compatible with Full-Body MRI

Medtronic has introduced in Europe the first and only implantable neurostimulation systems indicated for use in the treatment of chronic back and/or leg pain that are designed for full-body Magnetic Resonance Imaging (MRI) scans under specific conditions.  Medtronic SureScan neurostimulation systems include enhancements to existing devices as well as specially designed leads to reduce or

 
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St. Jude Starts Trial of Accent MRI Pacemaker and Tendril MRI Lead

Today St. Jude announced the first implant in its Accent MRI(R) Pacemaker and Tendril MRI(R) Lead IDE Study (MRI Study). The ultimate goal of the study is to determine if patients with these devices can safely undergo full-body, high resolution Magnetic Resonance Imaging (MRI) scans to better accommodate their medical needs. The investigational Accent MRI

 
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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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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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Purdue University’s Concept for Music-Powered Implantable Devices

  A group of researchers at Purdue University led by Prof. Babak Ziaie developed a vibrating cantilever that is excited by an external bass source from 200-500 Hz. The excitation causes the cantilever to vibrate, generating electricity and storing a charge in a capacitor. Although playing tones within a certain frequency range would be ideal, the

 
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“Data Block” Percutaneous Implantable Electrical Connector

The development of medical devices, drugs, and treatments depends on accurately retrieving clinical data from implanted animals. Implantable data collecting and sensing devices provide one way to retrieve these data. These device often include sensors or electrodes which must be implanted within the subject in order to provide clinicians with access to the sensed information.

 
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Neuromed’s TIME Battery- and RF-Powered Totally Implantable Multichannel Spinal Cord Stimulator (ca. 1988)

Neuromed was formed in 1980 with an initial capitalization of $150,000 by Bill Borkan through money obtained when Borkan`s parents took out a second mortgage on their home. Borkan’s desire to help his sister, Jennie, a cerebral palsy patient, got him started in neurostimulation technology. In the next few years, Neuromed developed and marketed a

 
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St. Jude’s (ANS) Rechargeable Spinal Cord Stimulators Eon and Eon Mini

In 2005, St. Jude Medical purchased Advanced Neuromodulation Systems (ANS) in Plano, Texas.  ANS had developed a number of spinal cord stimulation IPGs that were either externally powered via inductive link, internally powered by a primary cell, or internally powered by a transcutaneously rechargeable lithium-ion cell. Today, the most popular St. Jude spinal cord stimulators are the rechargeable

 
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Biotectix

Image Credit: Biotectix Biotectix of Ann Arbor, MI recently contacted me to let me know of new conductive polymer materials that they are developing to enhance the performance of next-gen implantable stimulation and sensing devices. Indeed, their materials sound very promising.  According to Biotectix, their electrode coatings and device components are made from proprietary conducting polymers that provide

 
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NDI Medical’s Miniature MicroPulse Neurostimulator

Image Credit: SPR Therapeutics NDI Medical was founded in 2002 by Geoffrey B. Thrope to develop and commercialize neurodevice products.  NDI Medical developed the MicroPulse neurostimulator, a thumb-sized, rechargeable pulse generator, that has been used for the treatment of incontinence and pain, as well as an implantable device for the restoration of function of paralyzed limbs. According to a 2006

 
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