Monday, February 28, 2005
ParkWalker virtual imagery glasses
Filed under: Neurology
, Rehab
BBC News reports about the Parkinson's hope over 'glasses':
A pair of glasses which use virtual imagery could help people with Parkinson's disease cope with walking problems, scientists say.The device uses light to project images in front of the user, helping them to focus and control their movement.
Researchers at Oxford Computer Consultants are now putting the headset forward for clinical trials.
Some people with the disease suffer from freezing, which renders them unable to move once they stop.The headset, which could cost £1,400, works by producing visual clues - an accepted method of combating freezing.
People with Parkinson's who freeze can be prompted to start walking again if objects are placed in their way and they have to walk round them.
Lights from the headset create a tunnel-effect, which enabled users in the initial testing stage to focus on the virtual imagery and move more freely.
More at ParkAid...
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Monday, February 28, 2005
Sensation 64 CT scanner
Filed under: Radiology
The Arkansas Democrat-Gazette reports that Little Rock Cardiology Clinic began using a new "64-slice" CT scanner that "can in four seconds capture a 3-D image of the heart." The system is one of eleven systems installed in the United States.
Siemens, the manufacturer of SOMATOM Sensation 64, describes the basic tech specs of the system:
Unprecedented Image Quality and Detail Obtain 64 slices per rotation with previously unknown sharpness, diagnostic detail and clarity with the industry's highest routine isotropic CT resolution of below 0.4 mm voxel size -- enabled by the revolutionary z-Sharp Technology.Benchmark in Speed
Routinely scan a submilimeter thorax in only 4 seconds and utilize ultimate performance for all ECG gated scans with the 0 MHU STRATON® achieving the industry's fastest CT rotation of 0.33 seconds.Seamless workflow
Enhance clinical performance and dramatically reduce post-processing time by up to 30% with Speed4DTM Technology.Leading-edge clinical applications
Increase diagnostic confidence and expand your clinical spectrum with a broad portfolio of advanced syngo® applications.
More at Siemens...
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Composite Health Care System II (CHCS II)
Filed under: Informatics
The American Medical News of AMA reports about Pentagon's universal electronic medical record system:
Imagine this: A patient you've never met comes into your office after having last seen a doctor more than 6,000 miles away. But even before you speak to him, you know his complete medical history, from his allergies to the diagnosis from his last x-ray.An automated reminder e-mail informs you the patient is due for a vaccination booster and a follow-up to some lab work that his previous doctor ordered months ago. When the patient's checkup is complete, all of the necessary evaluation and management codes for the visit are automatically compiled and ready to be sent electronically to the appropriate payer. Now the next physician to treat this patient will know everything that you've done without ever having to give you a call.
You might think this scenario is a long way off, but the U.S. military health system is already putting these concepts into practice. Advances that are occurring behind the scenes -- as well as lessons that are being learned -- could be invaluable to doctors who don't have a military rank in front of their names.
Physicians from Langley Air Force Base in Virginia to the Naval Medical Center San Diego are already cutting their teeth on the Defense Dept. system. Officials who are following its progress say the results are very encouraging. The effort has attracted the attention of several large health care systems, such as Mayo Clinic, Partners HealthCare System and Kaiser Permanente, which have initiated discussions with military health leaders in the hopes of possibly adapting parts of the system for their patients.
Partners HealthCare System is, of course, a coop of Harvard's Brigham & Women's and the Massachusetts General hospitals.
To test the system yourself, you can play the Java applets at this DoD website...
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Brain-computer interface system: promising results
Filed under: Neurology
The company behind the BrainGate Neural Interface System, covered in an earlier post, reports positive results from the pilot study:
The poster, titled "Feasibility Study of the BrainGate™ Neural Interface System for Individuals with Quadriplegia," includes preliminary data from one patient with a three-year-old spinal cord injury. The reported results were recorded over a six-month period. The surgery to implant the BrainGate sensor was performed in June 2004 at Rhode Island Hospital, Providence, R.I. ...The signal processing function of the BrainGate System was confirmed by its ability to reliably detect, transmit and analyze brain (neural) signals from the area of the brain that controls the movement of the hand and arm. Subsequent to the implant procedure, the patient was immediately able to send signals from this part of his brain in a controllable and meaningful fashion in response to directional commands even though he had not moved his arm in over three years due to a spinal cord injury. This capability has been maintained over a six-month period, and is continuing. A system has been developed to generate cursor control from these neural signals, enabling the patient to perform tasks and operate basic computer functions in numerous trials. The patient's control of the cursor was immediate and intuitive, and the patient was able to perform tasks while speaking and moving his head, without disruption.
These results are preliminary and represent the early outcomes from a single patient.
More at Cyberkinetics...
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Ear Vacuum Cleaner 3
Filed under: OTC
Japundit reports:
Shaped to fit the hand comfortably, the Ear Vacuum Cleaner 3 is suitable for use by pickers of all ages, from small children to senior citizens.The silicon rubber nozzle of the Ear Vacuum Cleaner 3 is soft enough to slip comfortably into the year without fear of injury.
Though it is compact and runs on two alkaline AA-size batteries, the Ear Vacuum Cleaner 3 delivers amazingly strong suction that keeps your ear canals clear of wax and other debris, which (according to the manufacturer) helps to avoid middle ear infection.
Comes with a cleaning brush and two nozzles.
More at device's website (Japanese only)...
(hat tip: GadgetMadness)
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"Tooth Tunes" by Hasbro
Filed under: OTC
WMMNA reports:
Hasbro plans on launching a musical toothbrush called "Tooth Tunes" reports the WSJ."When pressed to the teeth, the toothbrush renders a recorded riff from a pop star that lasts two minutes -- precisely the amount of time dentists say children should spend brushing their teeth.
How does it work? "The two-minute recording is stored on a microchip no bigger than a dot atop the letter i. Push a button on the toothbrush, and a minicomputer starts playing the song. Sound waves are transported through the transducer to the front teeth, traveling from there to the jawbone and then to the inner ear.
Hasbro is in talks with several recording artists about getting rights to their recordings. Many artists would probably consider a gig in a toothbrush beneath their talents. But others might welcome the daily exposure in their young fans' lives."
Pretty nifty and pretty useless.
(hat tip: Gizmodo)
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WSJ: FDA steps up medical-device industry monitoring
Filed under: Society
The Wall Street Journal reports that the FDA is starting to police the medical-device industry a little bit more closely. Advanced Neuromodulation Systems, Inc. is a case in point:
U.S. regulators are looking into past promotional practices at Advanced Neuromodulation Systems Inc., which several years ago offered doctors $1,000 if they implanted a pain-management device in certain patients for a five-day trial, according to a person familiar with the situation. Although the scope of the investigation couldn't be determined, ANS, of Plano, Texas, disclosed in its quarterly earnings report last week that it had been subpoenaed by the inspector general of the Department of Health and Human Services regarding its promotional practices.Documents recently reviewed by The Wall Street Journal, labeled "ANS Sales Bulletin," outline how doctors would be encouraged to implant the ANS device in patients who had failed to get better on a competing device made by Medtronic Inc. (Usually patients try the spinal stimulator for five days, and if it alleviates their pain, the device is permanently implanted, in a short surgical procedure.) The documents referred to the initiative as the "Renew ReTrial Program" and said it was an "initiative" intended "to collect data to compare the efficacy" of the competing devices.
The doctors were to collect information about the patient's condition and response to the ANS device and report back to the company. They would be paid only if they implanted the device in at least five patients. The documents said doctors would be compensated for providing "data collection and management of the trial process" on a one-page form, according to a review of the documents and the person familiar with the matter.
Physicians, or more commonly the universities or hospitals they work for, do get paid for conducting large-scale clinical trials that can involve hundreds or thousands or patients and take months or years to complete. A question that investigators have studied in prior cases has been whether payments to individual doctors constituted compensation for clinical trials, or inducements to use a medical device or drug.
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Medtronic recalls some LIFEPAK ® 500's
Filed under:
Medtronic has announced the recall of some LIFEPAK ® 500 defibrillators. According to the company, only 1,924 first-generation LIFEPAK 500 AEDs that were manufactured in 1997 are affected. Watch out for this malfunction:
The AED may continue to display a "connect electrodes" message and may not analyze the patient's heart rhythm even when the electrodes are properly connected. Failure to analyze the patient's heart rhythm will inhibit defibrillation, if it is needed.
More here...
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Friday, February 25, 2005
New nerve stimulator for drop foot sufferers
Filed under: Neurology
EUREKA (a pan-European network for market-oriented, industrial R&D) has announced that a Dutch-UK project "has developed a nerve stimulator implant that helps drop foot sufferers walk more easily and faster".
Further details:
The partners in EUREKA project E! 2526 IMPULSE have developed an implanted nerve stimulator which helps patients with drop foot to walk much better. Over 500,000 people suffer from a stroke each year in Europe and 10% of stroke victims are left with drop foot, which causes severe walking problems.
"The new system, in contrast to the surface stimulators, has an implanted component that is directly attached to the appropriate nerves, eliminating the problems of electrode placement. Also, the electrical stimulation is not painful as the stimulation current does not pass across the skin," explains Hermens.
The project used technology developed by the UK project partner, FineTech Medical, through its work on bladder stimulation. The device is implanted during surgery and produces the dual, balanced signals required to produce the correct walking action.
A clinical trial is currently testing the device and patients' reactions to it. Feedback is excellent - patients are able to walk better, faster and further, with a more normal gait.
Although the device is a world first and is expected to generate a market of 30,000 units a year, the partners first have to explain the benefits to patients and demonstrate the surgical procedure to clinicians.
More at the Project E! 2526 IMPULSE...
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KidSmart Vocal Smoke Detector
Filed under: OTC
The New York Times reports about an innovative smoke detector:
Matthew Ferris, 27, and Bruce Black, 29, were in a master's of business program at the University of Georgia, when they heard about a patent for a talking smoke detector.Children can sleep through almost anything, including very loud fire alarms, but Mr. Ferris and Mr. Black decided that what they called the cocktail party effect - that a person's own name or a familiar voice cuts through a haze of chatter - might penetrate the deeper sleep cycles of children.
As the pair polished the idea, they won regional competitions pitting business plans against one another. They also won a national contest; the grand prize was a $100,000 equity investment. Last November, they got their first marketable detectors, ready for sale at $69.95. After making the rounds of trade shows and fire conventions, they set up a small booth in an out-of-the-way spot at the electronics show. As a result, in the first quarter of this year, they will ship at least 25,000 KidSmart Vocal Smoke Detectors to about 30 clients.
NewsChannel 11 of Lubbock, TX investigates the device...
More at KidSmart...
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TargetScan® system for prostate CA
Filed under: Urology
The St. Louis Business Journal reports that the FDA has approved a medical device used to diagnose and treat prostate cancer, developed by Envisioneering Medical Technologies, LLC of St. Louis. The company boasts about its TargetScan® system featuring a stationary probe:
Current procedures require urologists to hold and pivot a probe with one hand, while performing a needle biopsy with the other hand. The inherent variables of this existing biopsy technique can force doctors to miss as much as 20 to 30 percent of potential cancers, according to Dr. Gerald Andriole, professor of surgery and chief of urology at Washington University School of Medicine and director of the Urological Research Center at Barnes-Jewish Hospital in St. Louis."We've learned that current diagnostic tools are inadequate -- missing cancer in some patients while over testing others," said Andriole, who after examining TargetScan joined Envisioneering's medical advisory board. "With TargetScan, we anticipate improved cancer detection -- saving time, money and possibly lives."
TargetScan also impacts cancer treatment, according to Dr. Jeff Michalski, Department of Radiation Oncology at Washington University School of Medicine. "The clinical benefit from the TargetScan 3-D probe is obvious," says Michalski. "By eliminating the need to physically move the probe, the prostate position will be stabilized allowing for improved radioactive seed implantation and better brachyotherapy clinical outcomes."
"We have met with urologists from across the country and heard their call for a better biopsy strategy to combat the disease that kills one man every 13 minutes," said Robert G. Mills, Envisioneering president. "With TargetScan, we have tried to answer this appeal by offering technology that we hope will reduce inconsistencies and produce conclusive test results from the first biopsy. This diagnostic and treatment delivery innovation is not only critical to a physician's medical practice, but it also is imperative for beating a cancer that is nearly 100 percent survivable if detected early."
More at Envisioneering Medical Technologies...
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VeriChip
Filed under: Informatics
DC's very own WUSA Channel 9 reports about the FDA-approved VeriChip:
Just like the barcode on a can of tomatoes, reduced to a number in a fraction of a second and linked to a computer database, people are voluntarily being bar-coded.The number is stored within a tiny glass chip that's the size of a grain of rice and surgically implanted just under the skin.
What it is, is a VeriChip, a radio-frequency i.d tag by a company called Applied Digital. The chip is loaded with whatever personal information you choose.
That can include your Social Security number, insurance, health information or even name and address.
A special reader has to be within a few inches to access your 16 digit number. To access your computer file, a password is needed.
Its original intent was for medical emergencies. In fact the company is about to give chip readers to 200 Emergency Rooms in America for free.
But Verichips could someday be implanted in our military with information, like next of kin.
Top secret government officials could use them to gain access to offices or files, or to anyone required to give i.d verification for financial reasons.
Humans can be tracked just like your dog or cat. The first id chips were put in pets. Today 70,000 shelters and veterinarians in American can scan a lost or injured animal and find the owner, in seconds.
In fact, Verichip has yet to land its first domestic account.
VeriChip, of course, is a similar RFID technology that is in the Surgichip (which is noninvasive), covered earlier here and here. Competition for human bar-coding is heating up, without any visible enthusiasm among the general public to be tagged (at least invasively tagged).
Our bet: invasive RFIDing will only be done for death row inmates (if at all...), and otherwise will not be accepted by the general public. Would you want to be invasively RFID'ed?
More at VeriChip...
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'Hackers may target pacemaker technology'
Filed under: Society
The Portsmouth Herald of New Hampshire raises a scary prospect:
As defibrillators become more common, and doctors attend to many more patients with the devices, ICDs (implantable cardioverter-defibrillators) are being tailored to relay information from outside the examination room, according to Dr. Mark Jacobs, a Portsmouth Regional Hospital cardiologist.The Food and Drug Administration has already approved - and medical technology companies are already marketing - equipment for the devices that can transmit a patient's heart-monitoring information, such as an electrocardiogram, through phone lines. A cardiologist can assess a patient's progress while the patient is miles away.
"As the technology changes, more and more of this is being done at the home for patients with an inability to be transported," Jacobs said. "Some patients go to Florida, and they're living here only part time."
With breakthroughs in defibrillator technology come security concerns. The remote relaying system - which allows patients to hold a wand above their chest and transmit information through an answering machine-sized contraption - is encrypted. But like any telecommunications, there is the small risk of a hacker obtaining sensitive information, Jacobs said.
He added that, while the FDA has not approved it, technology now exists to allow physicians to program ICDs through the phone lines. Currently, heart disease patients have regular checkups to fine tune their defibrillators.
"The devices aren't perfect. As people change medication, their defibrillators need to be adjusted, or a battery can start to be depleted," Jacobs said.
"If it's approved that we are able to re-program the device over the phone, it's theoretically possible that someone could intercept that call and reprogram someone's device in an adverse fashion."
Peter Gove, vice president for St. Jude Medical, which sells a home remote monitoring system for defibrillators, said the technology for remote reprogramming of the devices is a long a way off, but "moving in that direction."
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Dr. Leland C. Clark Jr: the recipient of the Russ Prize
Filed under: the good old days...
TGIF: the time is ripe for our regular Friday feature -- a look into the history of medical gadgetry from the internet's foremost medical gadgeteers.
It was during the past week that one of the engineering profession's highest honors for 2005, presented by the National Academy of Engineering (NAE) -- the Fritz J. and Dolores H. Russ Prize -- rightfully went to Dr. Leland C. Clark Jr. of the University of Cincinnati.
This is how the academy describes Dr. Clark's contribution in its press statement:
Leland C. Clark Jr., former University Distinguished Service Professor and Professor Emeritus, University of Cincinnati, was one of the founders of Synthetic Blood International Inc. Considered the "father of biosensors," he invented the first device to rapidly determine the amount of glucose in blood. Today many of the 18.2 million Americans with diabetes rely on Clark's original glucose sensor concept for self-monitoring. In the future, an implantable biosensor -- newly patented by Clark -- could make blood glucose monitoring even easier by sending readings whenever needed.The Clark oxygen electrode, which he invented in 1954, remains the standard for measuring dissolved oxygen in biomedical, environmental, and industrial applications. The electrode quickly measures blood oxygen levels, enabling doctors to perform 750,000 open-heart surgeries each year. Oxygen monitoring is now a requirement for hospital accreditation. It is also used to measure oxygen levels in rivers and oceans to protect wildlife populations.
Clark's nontraditional, interdisciplinary approach to problem solving has led to many breakthroughs. In addition to the implantable glucose electrode, his recent work has included research on a blood substitute and a breathable liquid.
"There is no prize that I would be prouder to win," said Clark.
More at National Academies' National Academy of Engineering...
Have a great weekend everyone and thanks for your patronage. And again, over the weekend we will be doing additional projects on the site, with some possible down times. Please bear with us as we try to improve your blogging experience.
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Thursday, February 24, 2005
ProPath will tag specimens with RFID
Filed under: Informatics
RFID is coming. Make no mistake about it. Wal-Mart is using it. And it's only a matter of time before RFID begins to impact medicine. Case in point, Dallas's ProPath Laboratories is partnering with Sybase, Inc. to
start placing an RFID tag on every specimen they receive:
To make their processes both more efficient and more secure, ProPath is now tagging each specimen as it enters the lab with a tiny RFID chip. The chips identify the tissues, announce the specimens' movements through the laboratory, and provide information about which processes need to be done by querying ProPath's anatomic information system (AIS) database.
Not to be paranoid, but we guarantee you that some pharmaceutical company is already trying to figure out how to tag your total knee replacement implant with an RFID tag that will allow them to bombard you with Minority Report style ads pushing their latest arthritis drug.
More on Sybase here...
More on ProPath here...
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Nomad ™ hand-held X-ray
Filed under: Dentistry
, Emergency Medicine
, Radiology
KUTV Channel 2 of Salt Lake City reports that a hand-held X-ray system designed in Utah is currently being used in Phuket, Thailand to ID victims of the tsunami.
ARIBA X-ray, Inc. describes the product:
Unlike other "portable" x-ray instruments, the battery powered NOMAD™ offers true portability with cordless operation and freedom from line voltage fluctuation. More than 100 exposures on one battery charge. Optimal for remote use and confined spaces as well as operatory functions.The external backscatter shield and internal radiation shielding protect the operator from radiation exposure.
This spiffy new product is awaiting the response on approval from the FDA.
More at ARIBA X-ray...
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Microsoft's anti-spam technology to fight HIV
Filed under: etc.
IDM.net.au reports:
An Australian researcher working with Microsoft through its Microsoft Research arm (MSR), has pioneered promising new ways to combat the deadly HIV virus with software typically used to analyse large computer databases and complex digital images, or to separate spam from legitimate email.
At the 12th Conference on Retroviruses and Opportunistic Infections (CROI), Microsoft Research will show how medical researchers can use machine-learning, data-mining and other software techniques to comb through millions of strains of human immunodeficiency virus (HIV) to find the genetic patterns necessary to train a patient's immune system to fight the virus. The first of these vaccine designs are currently undergoing laboratory testing.
Microsoft researchers David Heckerman and Nebojsa Jojic are the first to use algorithms similar to those in Microsoft's database and anti-spam software to uncover hidden patterns within the genetic mutations of the virus and the immune system of the patient.
The researchers, in collaboration with doctors and scientists from the University of Washington in Seattle and Australia's Royal Perth Hospital, plan to exploit these patterns to create improved vaccine designs that pack more HIV-fighting genetic markers into vaccines.
"Microsoft has helped us make a tremendous leap forward in our efforts to halt a virus that has already killed nearly 30 million people worldwide," said Simon Mallal, professor and executive director of the Centre for Clinical Immunology and Biomedical Statistics at Royal Perth Hospital and Murdoch University.
Very interesting. Also what's hard to believe is that Microsoft actually has anti-spam technology.
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Ultra Suction™ dentures
Filed under: Dentistry
, Geriatrics
Biomedics NZ Limited, a New Zealand based company, claims to have invented a new type of denture: one with a better seal and with less undesirable effects, such as "shrinkage" of the gum. The system relies, essentially, on surface tension to keep the denture in place. The company describes:
Mony Paz from Biomedics NZ undertook a major redevelopment, taking into account today's understanding of material science and the physical mechanisms of denture retention.This revolutionary technology is now delivered in a comprehensive mounting system.-- profiled bar has been developed to keep tissue proliferation to the minimum necessary for maintaining a seal. The specially formulated safe metal bar is fairly malleable, to fit any shape and contour of the alveolar ridge.
-- valves have been developed to expel the air and control the pressure level beneath the denture, using the specially formulated diaphragms.
-- processing cap has been developed with the dental practitioner in mind. The processing cap is specially designed to make the self curing procedure easy and safe, preventing damage to the valves.
-- service key has been designed to double as a gauge for both depth and diameter of the valve housing in the denture.
-- system is the result of research and laboratory development, lead by Mony Paz and Biomedics NZ team of professionals in the fields of product development, science and technology, dentistry and dental technology.
More at Biomedics NZ...
Update: Please read the comments for some thoughts from the developer of the denture adhesive system.
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LifeShirt used to evaluate mood effects in athletes
Filed under: Sports Medicine
In research at Saint Anselm College in New Hampshire, researchers are using the LifeShirt® system by VivoMetrics, Inc. to assess how mood may affect the physiologic performance of athletes. The LifeShirt is an ambulatory system to monitor cardiac, pulmonary and other physiologic functions over time. It has been used to accurately measure cough in COPD patients (.pdf), perform home pediatric sleep studies (.pdf), and in research into pathology as varied as breast cancer and bipolar disease.
In the Saint Anselm study:
A total of 23 participants, including 17 college varsity athletes wore the LifeShirt in a virtual reality scenario. The virtual environment included a headset which projected a visual representation of a running track while the athlete ran on an elliptical machine. When participants started running on a virtual track and reached a 60-70% maximum heart rate on the third lap, a virtual competitor appeared on the track stimulating a self reported frustration as the athlete was required not to increase work load, rather let the competitor stay ahead of them on the track. The LifeShirt was then used to record variations in heart rate and respiration, known as additional heart rate, to determine how competitors may affect the physiological responding of an athlete who self reports frustration during competition. "Previously clinical researchers used physiological monitoring equipment to monitor mood assessment and performance but the equipment limited participants to a sedentary position," said Dr. Finn PhD, a key researcher in the study and professor of Psychology at Saint Anselm College. "With the LifeShirt, for the first time, we can monitor how positive or negative stimuli affect the athlete as he performs."
A list of studies using the LifeShirt is here...
More information about the LifeShirt here...
The Saint Anselm study is here...
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