Medical

Compact Green Disk Laser for Therapy Systems

This diode-pumped, thin-disk laser is designed for applications in ophthamology, dematology, and endoscopy The JenLas® D2.mini 5/8 W, recently introduced to the U.S. market, offers an output power of up to 8 Watts. Lasers of the JenLas D2 product line work in continuous wave mode, emitting green laser light at 532 nm. The infrared laser light is converted into green laser light by an intracavity frequency doubling crystal. The new laser is a multi-mode system.

Posted in: Bio-Medical, Lasers & Laser Systems, Surgical Robotics/Instruments, Medical, Briefs, MDB

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Implantable Prosthetic Interface Securely Integrates With Bone and Soft Tissue

This technique merges tissue engineering and medical imaging to directly implant a prosthetic interface. A main limitation in deployment of prosthetic technology is the integration of the prosthetic device into the body. Using current procedures, effective prosthetic integration often requires 18 months and multiple surgeries. A new technique involves merging tissue engineering and medical imaging technology to directly implant a prosthetic interface that will rapidly and securely integrate with surrounding bone and soft tissue. Through controlled placement of appropriate cells, signaling factors, and scaffold materials, this process will enable the generation of multi-component implants that include a prosthetic interface.

Posted in: Bio-Medical, Implants & Prosthetics, Medical, Briefs, MDB

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Light Source Enables Endoscope Miniaturization

This work will explore an illumination system's potential to miniaturize traditional endoscopes by shrinking the size of the channel used to deliver light. Physical space constraints continue to impact advanced procedures such as single-incision laparoscopic surgery, robotic-assisted surgery, and other minimally invasive surgical procedures. Additional functionality and instruments are being squeezed through the smallest incisions possible. Available space continues to tighten with the migration of larger diameter, three-dimensional, high-definition endoscopic imaging systems into minimally invasive procedures. Fortunately, a significant portion of the endoscope, the light delivery channel, can be reduced in size, thereby allowing the space to be used for other purposes, or for shrinking the endoscope itself.1

Posted in: Bio-Medical, Imaging, Fiber Optics, Medical, Diagnostics, Briefs, MDB

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Wireless Tags Quickly Provide Details About Orthopedic Implants

A non-invasive system employing radio-frequency identification (RFID) technology is designed to give physicians easy access to information about implants and patients. Radio-frequency technology that uses human tissue instead of air as a conduit for radio waves is the basis of the first electronic “tag” system designed to track and monitor orthopedic implants. A 2009 RAND Corporation (Europe) technical report found that RFID technology offers several advantages to medical care in such areas as wireless data transfer and patient/object identification, and as a sensor.

Posted in: Bio-Medical, Implants & Prosthetics, Medical, Orthopedics, RF & Microwave Electronics, Briefs, MDB

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New Thermal Management Strategies for Medical Devices

Heat pipes and vapor chambers are being utilized to address challenging thermal management requirements. In an increasing number of medical device applications, thermal issues limit the overall performance and reliability of the system. Basic thermal management strategies such as liquid cold plates, air cooled heat sinks, and thermal interface materials are becoming insufficient as stand-alone solutions. In many new medical applications, implementation of advanced thermal technologies such as heat pipes and vapor chambers are becoming an integral part of the thermal management solution. These technologies offer excellent heat transfer and heat spreading performance. Furthermore, they are passive (no energy, no moving parts), quiet, and reliable. Several medical devices, such as powered surgical forceps, skin/tissue contacting devices, and polymerase chain reaction (PCR)/thermocyclers already use these technologies, and more applications are emerging. A discussion of heat pipe and vapor chamber operation and selected medical device applications follows.

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

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Improving Balance Function Using Low Levels of Electrical Stimulation of the Balance Organs

A device based on this technology may be used as a miniature patch worn by people with disabilities to improve posture and locomotion, and to enhance adaptability or skill acquisition. Crewmembers returning from long-duration space flight face significant challenges due to the microgravity-induced inappropriate adaptations in balance/sensorimotor function. The Neuroscience Laboratory at JSC is developing a method based on stochastic resonance to enhance the brain’s ability to detect signals from the balance organs of the inner ear and use them for rapid improvement in balance skill, especially when combined with balance training exercises. This method involves a stimulus delivery system that is wearable/portable and provides imperceptible electrical stimulation to the balance organs of the human body.

Posted in: Bio-Medical, Rehabilitation & Physical Therapy, Medical, Briefs, MDB

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Guidelines for Thermoplastic Color Control and Change Management

In order to make good color specifications, the OEM should gain an understanding of color technology, color measurement, and methods available to control color. Color is an important factor in many aspects of medical devices, from design to how the device is used and by whom. In 2010, the FDA and regulatory bodies around the world increased their scrutiny of colors as additives in all materials and are paying special attention to the biologic testing performed on pigments used in plastic in an effort to reduce potential safety risks.

Posted in: Bio-Medical, Manufacturing & Prototyping, Plastics, FDA Compliance/Regulatory Affairs, Medical, Briefs, MDB

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White Papers

Determination of Capacitor Life as a Function of Operating Voltage and Temperature
Sponsored by Evans Capacitor
Looking at Ceramic Carbides in a New Light
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Data Acquisition and I/O Control Applications Handbook
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Physical Security Solutions For Healthcare Equipment
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Reverse Engineering
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Using Acoustic Beamforming for Pass-By Noise Source Detection
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