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

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Remon Medical’s Implantable Pulmonary Pressure Sensor (1997-2007)

Remon Medical Technologies, Ltd. was founded in 1997 in Caesarea, Israel to develop implantable, wireless pressure sensors. Remon developed an implantable hemodynamic monitor, which allowed on-demand, non-invasive, leadless self-monitoring of pulmonary artery pressure by the patient at home. ImPressure devices were placed in the pulmonary artery, and transmitted pressure readings to a hand-held monitor.  It was hoped that the

 
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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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SMSI® Implantable Glucose Sensor

Sensors for Medicine and Science, Inc. (SMSI)  of Germantown, MD was founded in 1997 to develop chemical sensing technologies based on fluorescence sensing. SMSI® is now developing an implantable glucose sensor that is designed to automatically measure interstitial glucose every few minutes. The sensor implant communicates wirelessly with a small external reader, allowing it to track

 
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OT: We Received the First Copies of Our New Book!

Today we received the first two copies of the book that I wrote with my 16-year-old daughter Shanni!  It is a do-it-yourself book on Experimental Quantum Physics, and was published by John Wiley & Sons. From the back cover: “Build an intuitive understanding of the principles behind quantum mechanics through practical construction and replication of original

 
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St. Jude Medical’s Active Implantable Sales for 2011: CRM Down 3%, Neuromodulation Up 8%

St. Jude Medical today reported sales and net earnings for the fourth quarter and year ended December 31, 2011.    From the press release: “Cardiac Rhythm Management Total CRM sales, which include implantable cardioverter defibrillator (ICD) and pacemaker products, were$728 million for the fourth quarter of 2011, a 4 percent decrease compared to the fourth quarter of 2010.   After

 
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Biophan’s Implantable Biothermal Power Source

  Today I was going through some papers and found a 2005 brochure for Biophan’s implantable biothermal source – a 3 mm-thick power source for implantable devices capable of generating electricity from body heat.  This power source was being developed by Biophan in collaboration with the NASA Ames Research Center for Nanotechnology.  The device is covered by U.S. Patent

 
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Elema-Schoenander and the Very First Human Implants of a Pacemaker in Sweden (1958) and Uruguay (1960)

This is a picture of the first pacemaker to be implanted in a human patient.  It was developed by Dr. Rune Elmqvist (1906–1996), a physician by training, but working for the Swedish company Elema-Schonander as an engineer.   Dr. Elmqvist  developed the device in cooperation of Åke Senning, senior physician and cardiac surgeon at the Karolinska University Hospital in Solna, Sweden.

 
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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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MicroCHIPS’ Implantable Drug Delivery Device for the Treatment of Osteoporosis

MicroCHIPS was founded in 1999 as an MIT spinoff to develop implantable sensors and drug-delivery devices. MicroCHIPS’ drug-delivery technology is based on proprietary reservoir arrays that are used to store potent drugs within the body for long periods of time.  Individual device reservoirs can be opened on demand or on a predetermined schedule to precisely control

 
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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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Crazy Pacemaker Hack: d.i.y. High-Speed Photography

This is a hack that combines three of my favorite passions: pacemakers, photography, and coffee! I took this photograph by feeding the output of an infrared barrier to the atrium input of an old DDD pacemaker, setting an appropriate AV delay, and using the ventricular output to trigger a camera flash (via a optoisolator).  In

 
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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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Intermedics’ First Pacemakers (Mid 1970s)

In 1973, former Medtronic sales representative Albert Beutel founded Intermedics in Freeport, TX.  The first product was a small, mercury-cell-powered pacemaker.  In 1974 Intermedics introduced a lithium-powered version, and in 1976 it introduced InterLith which was hermetically sealed, and weighed just 65 grams.  At the time, InterLith’s size was a breakthrough, and became a very popular device, solidifying Intermedics’ position in the industry.  

 
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Original Datasheet for Arco’s Nuclear Pacemakers (ca. 1974)

Some time ago, my friend and colleague Paul Spehr gave me a copy of Arco Medical’s product catalog.  I scanned the original datasheets for Arco Medical’s nuclear fixed-rate and demand pacemakers models NU-5 and NU-6 and posted them here in pdf format: Arco_Nuclear_Datasheets Click here for a color picture and more information on Arco Medical’s nuclear pacemakers.

 
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St. Jude’s DBS Study Confirms Benefit of Constant Current System for Parkinson’s Disease

Image Credit: St. Jude Medical Today St. Jude announced that its first controlled study of Deep Brain Stimulation (DBS) confirms benefit of constant current system for patients with Parkinson’s Disease. Results were published online today by The Lancet Neurology journal. The aim of the study was to evaluate the Libra(TM) and LibraXP(TM) DBS constant current systems

 
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