Medical

Virtual Ultrasound Guidance for Inexperienced Operators

This audio/video system provides real-time help to inexperienced ultrasound operators in remote environments. Medical ultrasound or echocardiographic studies are highly operatordependent and generally require lengthy training and internship to perfect. To obtain quality echocardiographic images in remote environments, such as on-orbit, remote guidance of studies has been employed. This technique involves minimal training for the user, coupled with remote guidance from an expert. When realtime communication or expert guidance is not available, a more autonomous system of guiding an inexperienced operator through an ultrasound study is needed. One example would be missions beyond low Earth orbit, in which the time delay inherent with communication will make remote guidance impractical.

Posted in: Bio-Medical, Software, Medical, Diagnostics, Briefs, TSP, MDB

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Using Proprietary Solvent Technology to Swell Silicone

Presents a solution to certain challenges that design engineers and manufacturers face when working with silicone rubber. While silicone is the obvious material of choice in many medical applications because of its excellent biocompatibility, its physical properties make it challenging to work with. Design engineers, especially those who work with medical devices, know the difficulties of connecting flexible silicone tubing to barbed fittings or mating molded silicone parts with complex geometries to hard plastic parts. The combined elements of its flexible consistency, its inability to expand or stretch without mechanical or chemical assistance, and the tacky surface of silicone rubber, make assembly with rigid parts difficult.

Posted in: Bio-Medical, Materials, Coatings & Adhesives, Composites, Medical, Briefs, MDB

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Mechanical Components for Demanding Applications

Small-diameter ball screws and stainless steel linear actuators deliver performance and durability for compact, portable, and lightweight applications. Advanced medical device designs are evolving rapidly and demand higher standards for medical equipment reliability. Applying linear motion components to these medical applications yields the best results when collaboration begins at the early stages of the design. Beginning with specification requirements provided by the medical device manufacturer, definition of design priorities must be incorporated for finished devices intended for human use, including:

Posted in: Bio-Medical, Mechanical Components, Medical, Briefs, MDB

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Handheld Universal Diagnostic Sensor

A single drop of blood enables chemistry, hematology, and biomarker diagnostics in minutes. The rHEALTH technology is designed to shrink an entire hospital testing laboratory onto a handheld device. A physician or healthcare provider performs the test by collecting a fingerstick of blood from a patient. The tiny volume of blood is inserted into the rHEALTH device (see figure). Inside the device is a microfluidic chip that contains small channels about the width of a human hair. These channels help move the blood and analyze the blood sample. The rHEALTH sensor uses proprietary reagents called nanostrips, which are nanoscale test strips that enable the clinical assays. The readout is performed by laser-induced fluorescence. Overall, the time from blood collection through analysis is less than a minute.

Posted in: Bio-Medical, Medical, Briefs, TSP

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Thin, Absorbent Skin Adhesive

New technology offers improved fluid-handling capacity and strong, skin-friendly adhesion for direct-contact wound treatment, stoma care, and other applications. An aging population and accompanying demand for wound dressing and stoma care technologies that provide better treatment than conventional techniques have prompted the medical adhesives industry to produce a new generation of product solutions. One recently proven technology is a highly breathable formulation with superior fluid-handling capacity called Avery Dennison® Thin Absorbent Skin Adhesive, which is poised to shift current market expectations of conventional acrylic adhesives.

Posted in: Bio-Medical, Materials, Coatings & Adhesives, Medical, Briefs, MDB

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Quality Control Method for a Micro-Nano-Channel Microfabricated Device

This method can be performed on multiple devices simultaneously or one at a time as quality control. A variety of silicon-fabricated devices is used in medical applications such as drug and cell delivery, and DNA and protein separation and analysis. In applications such as drug delivery from implantable devices, the silicon device structure must have superior precision. In particular, the nano-channel size in implantable drug delivery membranes strongly determines the drug release from the implanted reservoir. An accidental difference in the nano size may translate into ineffective medical treatment or dangerous overdosing.

Posted in: Bio-Medical, Medical, Drug Delivery & Fluid Handling, Patient Monitoring, Briefs, MDB

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Controlling Heat Curing Adhesive Processes Using Infrared Spot Curing

Novel infrared fibers provide precision heating and curing of glues in medical device assemblies, improving workflow and design. Adhesives are often used as the joining compound between substrates in the medical device industry. Typical applications for adhesives include tube-to-connector bonding, steel-cannula-to-hub bonding, and any other joining process. Adhesives work particularly well in the assembly of dissimilar materials where traditional solvent-welding methods are being eliminated due to workplace safety legislation and where other joining methods such as ultrasonic welding and laser welding are inadequate.

Posted in: Bio-Medical, Photonics, Manufacturing & Prototyping, Medical, Briefs, MDB

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