Archives: 10/2007

3653ang1 AngioSculpt® Scoring Balloon Catheter
The Globes is reporting that AngioScore Inc., an Israeli company that has developed a new angioplasty catheter “with a component that prevents balloon slippage,” has secured $30 million from a group of VC firms. Company’s flagship product, the AngioSculpt Scoring Balloon Catheter, has received the European CE Mark in September 2004 for use in the coronary and peripheral arteries, and its Pre-Market Approval (PMA) application for the FDA has been approved in January 2007.
Here’s what the company says about its angioplasty device:

The AngioSculpt® Scoring Balloon Catheter technology was developed to address the clinical and user limitations of conventional balloon angioplasty (POBA) and significantly improve the clinical performance in both peripheral and coronary artery applications. POBA works to dilate the target lesion by compressing the plaque and stretching the arterial wall. This mechanism of action creates pressure and injury (barotrauma) that can lead to irregular tears and splits (dissection) throughout the area of dilatation. POBA dissection rates have been reported as high as 30% or more.
The AngioSculpt Scoring Balloon Catheter is comprised of a semi-compliant angioplasty balloon surrounded by a unique nitinol scoring element which works in tandem with the balloon to deliver a “scoring” effect to the target lesion upon balloon inflation. As the balloon inflates, the radial forces are concentrated along the surfaces of the nitinol scoring element. This results in luminal expansion that is precise, predictable, and controlled. Barotrauma is reduced resulting in lower dissection rates. Device slippage, which is commonly seen with POBA and may result in “geographic miss,” is eliminated with the AngioSculpt.

Product page: AngioSculpt Scoring Balloon Catheter …
Product Video …
Press release: AngioScore Announces Completion of $30 Million Financing …

  • Boston Scientific Announces European Approval of Next-Generation Implantable Defibrillator …
    [Boston Scientific]
  • GE Healthcare Acquires Dynamic Imaging, LLC, a Web-based image and information management company…
    [source]
  • Antibody Leads to Repair of Myelin Sheath in Lab Study of Multiple Sclerosis and Related Disorders …
    [Mayo Clinic]
  • Brain Imaging Aids in Defense against Genetic Disease …
    [Caltech]
  • New ‘seed’ therapy helps pinpoint breast tumors with more accuracy …
    [UT Southwestern Medical Center]
  • Nanotechnology patents and the future of the pharma industry …
    [Nanowerk]
  • The difference between fish and humans: scientists answer century old developmental question …
    [The Biotechnology and Biological Sciences Research Council]
  • myoVad sm The Myotech Circulatory Support System (CSS)
    According to a press release, Biophan Technologies Inc. has finalized an $11 million cash deal with Medtronic Inc., in which the Pittsford, NY-based company is selling to Medtronic all rights to its patents to make implantable gadgets, like pacemakers and defibrillators, MRI safe. (The complete list of Biophan’s patents can be found here.) The deal will allow Biophan to invest its extra cash into Myotech LLC (West Henrietta, NY), a developer of the MYO-VAD™ circulatory assist device, a system that was first reported here in July, 2006. For now, it seems, the system has been re-branded as The Myotech Circulatory Support System (CSS). Biphan has exclusive rights to market and distribute the device, if, and when, it is approved by the FDA.
    453ertt The Myotech Circulatory Support System (CSS)The company is quite optimistic about the system:

    The Myotech CSS is the first in a family of products based upon Direct Mechanical Ventricular Actuation (DMVA) technology. It consists of a flexible polymer “cup” that can be installed around the heart in approximately three minutes. Incorporating a pneumatically activated liner, the Myotech CSS operates by compressing and expanding bi-directionally, providing the energy that allows the heart to restore the blood flow to normal, life sustaining levels. A previous version of the technology has been installed in over 700 animals and helped to save human lives in emergency–use situations. Following substantial improvements to the technology, the Myotech CSS is now ready for commercialization.
    The Myotech CSS energizes the best blood pump known to man: the human heart. Since it does not contact circulating blood, like virtually all existing cardiac assist devices, the Myotech CSS has the potential to reduce or avoid complications which plague existing devices, including clotting and stroke, bleeding, and infection. Additionally, the healing environment created by the Myotech CSS has the potential to rehabilitate many sick hearts, allowing the device to be removed and the heart to function properly again without assistance…
    Recent medical studies (REMATCH) have shown that the therapeutic benefit of a cardiac assist device is superior to medical management alone (i.e. drug therapy) for the treatment of heart failure. However, the cost of existing devices and levels of patient complications remain unacceptable. The Myotech CSS promises to be safer, more effective, less expensive (total procedure cost), broadly available (not just specialized transplant or cardiac centers), and reimbursable under existing guidelines.
    The first embodiment of the Myotech CSS to be introduced will enable the physician to quickly restore cardiac function and blood flow to stabilize heart failure patients and provide the precious time needed to deliver the proper therapy. Compared to conventional ventricular assist devices (VAD) that take 45 minutes to two hours to install with major surgery, the Myotech CSS can be installed in approximately three minutes. This procedure could potentially be performed in life-saving emergency situations in virtually every hospital.
    The Myotech CSS does not contact circulating blood, which dramatically reduces the risk of complications common to existing cardiac assist devices. While existing cardiac assist devices usually address only one aspect of heart failure, typically by assisting the emptying of the left ventricle only, the Myotech CSS is designed to actively support both filling and emptying of the right and left ventricles. This is a critically important capability since many forms of heart failure affect more than emptying of the left ventricle. According to the NEJM, 20-50% of congestive heart failure (CHF) patients are in pure diastolic (filling) failure, with 1/3 a good consensus. Additionally, many patients are in combined failure, with components of both systolic (emptying) and diastolic dysfunction degrading the performance of their heart. No other device assists the diastolic phase of pumping. We believe this broad range of capability will extend the potential uses of this device in treating many forms of both acute and chronic heart failure, including congestive heart failure. The possibility of treating a wide range of heart failure disease types with fewer complications increases the potential market for this product.
    Once approved by the FDA, it is anticipated that the Myotech CSS will be 100% reimbursable under pre-existing reimbursement codes.

    Product page: Myotech Circulatory Support System (CSS) …
    Press release: Biophan Completes Deal With Medtronic …
    Myotech home page…
    Flashback: The MYO-VAD™

    buraktirf Tiny Biomolecular Motion DetectorPhysicists from the University of Illinois at Urbana-Champaign have developed a technique that can measure nano-scale motion considerably more precisely than any other method.

    To better understand the mechanisms and functions of proteins that interact with the Holliday junction, researchers must first understand the structural and dynamic properties of the junction itself.
    But purely mechanical measurement techniques can not detect the tiny changes that occur in biomolecules in the regime of weak forces. Ha [Taekjip Ha, U. of Illinois professor of physics --ed.] and colleagues have solved this problem by combining the exquisite force control of an optical trap and the precise measurement capabilities of single-molecule fluorescence resonance energy transfer.
    To use single-molecule fluorescence resonance energy transfer, researchers first attach two dye molecules – one green and one red – to the molecule they want to study. Next, they excite the green dye with a laser. Some of the energy moves from the green dye to the red dye, depending upon the distance between them. The changing ratio of the two intensities indicates the relative movement of the two dyes. Therefore, by monitoring the brightness of the two dyes, the researchers can determine the motion of the molecule.
    The optical trap, on the other hand, functions somewhat like the fictional tractor beam in Star Trek. In this case, a focused laser beam locks onto a microsphere attached to one end of the molecule to be studied. The optical trap can then pull on the molecule like a pair of tweezers.

    Press release: New force-fluorescence device measures motion previously undetectable

    OTC

    face massaging robot Face Massaging Japanese Robot
    Continuing Japanese efforts to automate and robotize everything has led them to develop a robotic face massage system, the photos of which hint more at electroshock therapy than a pleasant experience.

    The WAO-1 robot, which stands for Waseda Asahi Oral Rehabilitation Robot 1, is being developed initially for patients with jaw-related medical problems who require facial massages as part of their treatment, according to project leader Atsuo Takanishi.
    The robot’s arms are fitted with ceramic golf ball-sized spheres that roll over the skin. The arms’ movements are controlled by a complex set of algorithms designed to emulate massages, while six sensors at the base of the arms measure and adjust the pressure applied by the spheres, Takahashi said.
    The technology is more refined than those in electric massage chairs because the facial bone structure is much more fragile than back or spine bones, he said.

    More from Brisbane Times
    (hat tip: Gizmodo)

    ENT

    Proving that science is still unraveling the basics of the human body, MIT researchers found hitherto unknown method by which the ear hears and processes sound.

    MIT Professor Dennis M. Freeman, working with graduate student Roozbeh Ghaffari and research scientist Alexander J. Aranyosi, found that the tectorial membrane, a gelatinous structure inside the cochlea of the ear, is much more important to hearing than previously thought. It can selectively pick up and transmit energy to different parts of the cochlea via a kind of wave that is different from that commonly associated with hearing.

    It has been known for over half a century that inside the cochlea sound waves are translated into up-and-down waves that travel along a structure called the basilar membrane. But the team has now found that a different kind of wave, a traveling wave that moves from side to side, can also carry sound energy. This wave moves along the tectorial membrane, which is situated directly above the sensory hair cells that transmit sounds to the brain. This second wave mechanism is poised to play a crucial role in delivering sound signals to these hair cells.
    In short, the ear can mechanically translate sounds into two different kinds of wave motion at once. These waves can interact to excite the hair cells and enhance their sensitivity, “which may help explain how we hear sounds as quiet as whispers,” says Aranyosi. The interactions between these two wave mechanisms may be a key part of how we are able to hear with such fidelity – for example, knowing when a single instrument in an orchestra is out of tune.

    The tectorial membrane is difficult to study because it is small (the entire length could fit inside a one-inch piece of human hair), fragile (it is 97 percent water, with a consistency similar to that of a jellyfish), and nearly transparent. In addition, sound vibrations cause nanometer-scale displacements of cochlear structures at audio frequencies. “We had to develop an entirely new class of measurement tools for the nano-scale regime,” Ghaffari says.
    The team learned about the new wave mechanism by suspending an isolated piece of tectorial membrane between two supports, one fixed and one moveable. They launched waves at audio frequencies along the membrane and watched how it responded by using a stroboscopic imaging system developed in Freeman’s lab. That system can measure nanometer-scale displacements at frequencies up to a million cycles per second.

    Here is video captured by the research group showing waves traveling along the ear’s tectorial membrane:


    More from MIT News

    41254isr1 Ins and Outs

  • FDA Advisory Committee Recommends Medtronic’s Endeavor® Drug-Eluting Stent for Approval …
    [Medtronic]
  • GE to distribute imaging device of DeepBreeze …
    [Globes]
    Flashbacks: The VRIxp System: New Noninvasive Way to Image Lungs ; New Pulmonary Imaging Modality Approved by the FDA; Video of VRIxp System from Deep Breeze
  • Boston Scientific Sells Cyberonics Stake …
    [Forbes]
  • Japan Electronics Makers Gearing Up on Healthcare Products …
    [The Japan Corporate News Network]
  • High-performance, flexible nanotechnology hydrogen sensors …
    [Nanowerk]
  • Collaboration is key to protecting nanotechnology workers …
    [Nanowerk]
  • Surprise in the organic orchard – a healthier worm in the apple: Scientists discover how the codling moth rapidly developed virus resistance …
    [Max Planck Society]
  • Protein enhances lethality of influenza virus …
    [Cell Press]
  • Linking cigarette smoke and obesity: What our genes and environmental factors tell us …
    [Pacific Northwest National Laboratory]
  • Drug Makers’ Credit Ratings in Doubt …
    [WSJ]
  • Purpose of appendix believed found …
    [CNN]
  • Alternative food networks connect ethical producers and consumers and can lead to healthier eating …
    [Economic & Social Research Council ]
  • Chemistry Nobel makes a great birthday gift …
    [Nature]
  • 43634sol1 The SolarScan® Sentry for Melanoma Monitoring
    You are looking at the images of SolarScan® Sentry, a new model of melanoma diagnostic and monitoring system, from Australia’s Polartechnics Ltd. We had a post about the original SolarScan® back in December 2005.
    43634sol3 The SolarScan® Sentry for Melanoma MonitoringHere’s what the Sydney-based company says about its upcoming model:

    SolarScan enables suspect lesions to be monitored for changes that signal malignancy.
    SolarScan is designed for ease of use in a busy practise. Its efficient user interface allows for rapid acquisition and processing of patient and lesion data.
    Calibrated image storage allows future comparison of changes in patient lesions. SolarScan is the only digital dermoscopy system with calibration traceable to a common colour standard ensuring lesion reproducibility between visits…
    SolarScan Sentry, featuring Polartechnics patented automated colour calibration system is now in a compact award winning console. The console has been designed for minumum weight and equipment footprint for convenience to the user. All attachments are directly accessible to the operator. The specially designed handpiece features a 5 megapixel 3-chip digital video camera providing improved lesion monitoring, a stand which protects it from damage and USB attachment for easy storage and mobility. SolarScan Sentry couples superb design with intelligent engineering.

    New system’s features:

    Advance Imaging Technology

  • High-resolution digital dermatoscopic images
  • Colour calibrated images using Polartechnics unique patented technology
  • Simple and fast image capture for ease of use in busy practice
  • Advanced System Capabilities

  • “Tile” monitoring feature allows up to 4 calibrated images to be compared at a time to detect subtle changes
  • Reports can be attached to patient files within Patient Management Software
  • Ability to email reports
  • Network compatibility
  • Product brochure (.pdf)…
    Product page: SolarScan …
    Flashbacks: The SolarScan® …
    (hat tip: Gadget Lab)

    Art

    An article published at SmartImagebase.com claims that animation from Nucleus Medical Art Inc., a Kennesaw, Georgia company, “may just be the most widely viewed medical animation in the world.”

    So far, the animation has been watched over 630,000 times on Youtube and well over 1,500,000 times on the company’s web site in the past year.


    Just amazing! Check out all other animations and illustrations from Nucleus Medical Art, on YouTube and on company’s website
    Article: World’s Most Popular Medical Animation? …
    Flashback: 3D Animations from Nucleus Medical