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mplishka posted a topic in News and Trending TopicsInteresting guidance from the FDA. It will cover 3d printing custom devices. http://www.dicardiology.com/article/fda-changes-rules-custom-medical-device-exemptions?eid=323035710&bid=1562576
DevarshVyas posted a blog entry in Devarsh Vyas's Biomedical 3D Printing Blogs3D printing technologies have opened up the capabilities for customization in a wide variety of applications in the medical field. Using bio-compatible and drug-contact materials, medical devices can be produced that are perfectly suited for a particular individual. Another trend enabled by 3D printing is mass customization, in that multiple individualized items can be produced simultaneously, saving time and energy while improving manufacturing efficiency. 3D printers are used to manufacture a variety of medical devices, including those with complex geometry or features that match a patient’s unique anatomy. Some devices are printed from a standard design to make multiple identical copies of the same device. Other devices, called patient-matched or patient-specific devices, are created from a specific patient’s imaging data. Commercially available 3D printed medical devices include: Instrumentation (e.g., guides to assist with proper surgical placement of a device) Implants (e.g., cranial plates or hip joints) External prostheses (e.g., hands) Prescription Glasses Hearing Aids In summary, the 3D Printing medical device market looks exciting and promising, Various Reports and surveys suggest the unexpected growth and demand for 3D Printing in medical device industry and it is expected to blossom more but a number of existing application areas for 3D printing in healthcare sector require specialized materials that meet rigid and stringent bio-compatibility standards, Future 3D printing applications for the medical device field will certainly emerge with the development of suitable additional materials for diagnostic and therapeutic use that meet CE and FDA guidelines.
mattjohnson posted a blog entry in Matt Johnson's Biomedical 3D Printing BlogImplantable medical devices help diagnose and treat serious health conditions ranging from anatomical abnormalities to cardiovascular illnesses and kidney diseases. Commonly used devices include implantable cardioverter defibrillators, pacemakers, intra-uterine devices, spine crews, hip implants, metal screws, and artificial knees. Recent years have seen a significant increase in the use of such implants, which has led to the creation of several innovative products with improved function. Batteries play a crucial role in the successful operation of certain implantable devices. Most products rely on lithium cells that are powerful and easy to use. These electrochemical power sources can, however, lead to toxic side effects. Some patients may also experience biocompatibility issues. Healthcare professionals, nonetheless, had limited options, at least until now. The 3D Printed Battery Researchers at Carnegie Mellon University are aiming to overcome the drawbacks associated with traditional batteries by developing biodegradable versions made from natural ingredients. They have developed a prototype battery that can provide 5 milliWatts of power for up to 18 hours. This energy is enough to deliver medications slowly over a span of several hours or to detect the growth of pathogenic bacteria within the body. The battery is made from melanin pigment found in skin, hair and nails. The pigment protects the body by absorbing ultraviolet light and toxic free radicals. It also has the ability to bind to metallic ions and can therefore, transform into the perfect battery material. While melanin can form either the anodic or the cathodic terminal of the battery, magnesium oxide is used as the second terminal and the GI fluid comprises the electrolyte. The materials are housed in a three-dimensional (3D) printed capsule made from polylactic acid, or PLA. A 3D printer allows researchers to deposit the desired materials on a substrate in a specific pattern. It was invented in the 1980s to create engineering prototypes. Soon, researchers began using 3D printers in the field of medicine to improve patient outcomes. The technology helps customize the shape and the size of the outer capsule as per the needs of the consumer. The 3D printed capsule maintains the structural integrity of the battery and allows it to glide smoothly through the device. The capsule can dissolve quickly once it completes the essential functions. Other natural components within the battery can also degrade without producing any toxic side effects. The Future Currently, most ingestible and degradable probes and drug delivery systems remain in the body for about 20 hours. Although melanin batteries are less powerful when compared to their lithium counterparts, researchers believe that they could work very well with devices that remain in the body for only a few hours. The new battery is in the initial stages of development and will need to undergo extensive clinical testing before actual use. Nonetheless, it is a step in the right direction. Eventually, it may be possible to create more powerful versions of edible batteries that can support all types of medical devices, irrespective of their duration of use.
The US Food and Drug Administration (FDA) just released guidance on the use of 3D printing for medical purposes in the USA. http://threedmedprint.springeropen.com/articles/10.1186/s41205-016-0005-9 I am particularly interested in how the FDA approval applies to software used to generate models that are used for surgical planning but not diagnostic purposes? It seems, from the article, that if the purpose of the 3D printed model is merely for thinking about or planning a surgery, it is a "visual aid" and FDA approved software is not required. The technical term is a "medical image hardcopy device," examples of which are laser printers and cameras. If it is used for diagnosis, then it should be discussed with the FDA. And if use for implantable medical devices or surgical cutting guides (i.e. stuff that touches the patient), then the whole process is under FDA approval. This correlates to what the paper's first author (Matthew Di Prima from FDA) said at the 2015 Bioinformatics Festival during this talk. Key part is at 4:41. https://videocast.nih.gov/summary.asp?Live=15417&bhcp=1 Anyone have any thoughts about this?