Health, Medicine, & Biotechnology

Algorithm Measures Range of Motion and Applies Eccentric and Concentric Loads During Exercise

Microprocessor-controlled exercise equipment that uses a servomotor has the capability to adjust the applied resistive load based on position, velocity, and acceleration. One method of applying the resistive load consists of applying a greater load during the eccentric phase of the exercise motion (muscles actively lengthening) than during the concentric phase of the motion (muscles actively shortening). This technique, called eccentric overloading, can improve the benefits of a strength training session significantly. Although the exercise device can alternate between concentric and eccentric loading based solely on the direction of the bar movement, this is undesirable for several reasons. First, when the velocity is close to zero, the system would rapidly switch between the eccentric and concentric loads. Second, if the exerciser is unable to complete a lift with the concentric load and wishes to lower the bar, the system would apply the high eccentric load, which is highly undesirable. Thus, it is necessary for the system to know the limits of the movement (range of motion, ROM) so that the system can identify when the user has completed the lift and the eccentric load can be properly applied.

Posted in: Briefs, Medical, Mathematical models, Computer software / hardware, Computer software and hardware, Computer software / hardware, Computer software and hardware, Medical, health, and wellness, Biomechanics
Read More >>

ISO 11135:2014 Changes – Are You Prepared?

ISO 11135:2014 (Sterilization of health-care products - Ethylene oxide - Requirements for the development, validation and routine control of a sterilization process for medical devices) was originally published in August 2014. As the end of the 3-year transition period approaches, the specifications in the previous edition will no longer apply.

Posted in: Webinars, On-Demand Webinars, Medical
Read More >>

Designing for Mechanical and Signal Integrity in Handheld Medical Treatment Applications

Handheld medical devices must perform across a wide range of device specifications and end-user environmental conditions. Mechanical and signal integrity of cable components is especially important for high-level performance, accuracy, durability, longevity, and user satisfaction. A great variety of insulating and jacketing material options exist for wire and cable in medical electronics. Performance factors that affect material selection decisions include biocompatibility, disinfection and sterilization compatibility, revision control assurance, environmental regulatory compliance, aesthetics, flexibility, durability, and cost. Subtle differences in priority may result in significant differences in product design, as well as overall cost.

Posted in: White Papers, White Papers, Manufacturing & Prototyping, Mechanical Components, Bio-Medical, Medical
Read More >>

Monofilaments and Fibers in Medical Applications

This Webinar will touch on two recent advancements in Medical Monofilaments: Implantable ePTFE Suture and LCP Monofilament for MRI interventional procedures.

Posted in: Webinars, On-Demand Webinars, Medical
Read More >>

Tool Helps Design Soft Robots That Can Bend and Twist

Designing a soft robot to move organically — to bend like a finger or twist like a wrist — has always been a process of trial and error. Now, researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences and the Wyss Institute for Biologically Inspired Engineering have developed a method to automatically design soft actuators based on the desired movement.

Posted in: News, Implants & Prosthetics, Motion Control, Robotics, Computer-Aided Design (CAD), Software
Read More >>

Chemical Compatibility With Hospital Disinfectants and Oncology Drugs

In a hospital environment, the need to mitigate risks and enhance patient safety and comfort has significantly increased the demand for high-performing plastics with improved chemical resistance. This white paper presents results from screening studies measuring clear thermoplastics’ chemical compatibility with various medical disinfectants, oncology drug carrier solvents, and actual oncology drugs. As compatibility becomes more complex, it’s apparent that Eastman Tritan™ copolyester offers clear advantages.

Posted in: White Papers, White Papers, Bio-Medical, Medical
Read More >>

IEC 60601-1-2 Edition 4: New Requirements for Medical EMC

Plan now to ensure your medical devices comply with new IEC 60601-1-2 EMC 4th Edition standard requirements by the December 2018 effective date. Since the development cycle can be 2-3 years, it is important to understand the new standard now when designing medical devices.

Posted in: White Papers, White Papers, Electronics, Bio-Medical, Medical, Instrumentation
Read More >>

Developing a Laser System to Decrease the Rate of Neurodevelopment Issues

A fairly new biomedical imaging modality, optoacoustic imaging is based on the use of laser-generated ultrasound. According to the National Center for Biotechnology Information, it is a hybrid method that has emerged over the past two decades, combining the high-contrast and spectroscopic-based specificity of optical imaging with the high spatial resolution of ultrasound imaging.

Posted in: Articles, Diagnostics, Imaging, Medical, Lasers & Laser Systems, Optics, Imaging, Imaging and visualization, Lasers, Imaging, Imaging and visualization, Lasers, Medical equipment and supplies, Nervous system
Read More >>

Understanding Low Outgassing Adhesives

Engineers often want to know whether an adhesive is low outgassing or generic. While there are cases when nothing but a low outgassing product will do, the truth is that many so-called generic adhesives inherently have low outgassing levels. What's more, most bonding, potting, encapsulation and sealing applications don't need to meet a defined outgassing specification. Check out Master Bond’s guide to understanding when low outgassing adhesives are the right choice.

Posted in: White Papers, White Papers, Coatings & Adhesives, Materials, Medical
Read More >>

Integrating Novel Materials to Improve Medical Device Performance

Today’s implantables are highly engineered assemblies with multiple complex elements that require innovative materials and sophisticated manufacturing. The development and use of new and novel materials and processes has enabled advances in both medical device performance and patient safety. Whether it’s a lighter material, a smoother surface, or a process that can be automated and repeatable, advanced technologies such as scratch-free surfaces or specialized coatings for stimulation can help extend or improve the life of implantable devices.

Posted in: White Papers, White Papers, Coatings & Adhesives, Materials, Bio-Medical, Medical, Lasers & Laser Systems, Photonics
Read More >>

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.