Subscribe to MDT Magazine Articles

Conformal Cooling Using DMLS

June 5, 2012 6:44 am | by Tim Ruffner | Comments

Conformal cooling in tool design is a concept that’s fundamentally sound. The trouble lies in the mechanics. Design obstacles imposed by performance boundaries in available machining processes often put its merits out of practical reach. The emergence and attainability of DMLS technology gives toolmakers the design latitude to make conformal cooling a profitable reality.

How Low Can You Go?

June 5, 2012 5:58 am | by Donnie Garcia | Comments

"Low power” is almost always used to describe MCUs, and it’s usually accompanied by power mode specifications and battery life calculations based on milliamp hours. While those aspects of low power design are important, there are other embedded design techniques that can lead to a significant extension of the usable lifetime of a product, which is the focus of this article.

Injection Molding Small Complex Bioabsorbable Implants

June 5, 2012 5:25 am | by Tanner Hargens | Comments

Injection molding intricate components for medical device implantables is a difficult task on its own. Add absorbable polymer to the equation and it becomes many times more challenging. This article reviews several of the barriers to success in this area of component fabrication for implantable medical devices.   


Designing for the User

June 5, 2012 5:04 am | by Shigeru Tanaka | Comments

There are a number of successful approaches designers can take when developing a new medical device. However, as the market transforms with outpatients being the primary users of many devices over health care professionals, the critical design issues transform as well. This article looks at designing medical devices that are to be used by the outpatients themselves.

Cardiac Catheter Leak Detection

May 30, 2012 12:58 pm | by Joe Pustka | Comments

With the variety of tasks a cardiac catheter must accomplish, testing them to ensure safety and reliability is of critical importance. However, due to the range of tests that must be completed on them, this process can be lengthy and challenging. This article highlights the difficulties that can be encountered and offers a solution in the form of a new testing system.

Balloon Tubing – The Key to Good Balloons

May 30, 2012 12:43 pm | by Apur Lathiya | Comments

As more medical device OEMs invent new ways to navigate the tortuous anatomy and open up clogged arteries, one constant remains—without high quality balloon tubing, producing high quality balloons consistently can be a real challenge. This article will highlight some of the considerations in manufacturing balloon tubing from Polyamide or Polyamide co-polymer materials.

Pinch It: Contamination-Free Fluid Management Using Pinch Valves

May 30, 2012 12:09 pm | by Don Harris | Bimba Manufacturing Company | Comments

Transferring fluids in healthcare applications can be a complicated procedure when trying to ensure there is no contamination from outside surfaces. Pinch valves offer a solution via a pinching mechanism that “pumps” the fluid through the tubing. This article examines the technology, offers considerations for selection, and highlights the types of tubing that are best suited for use.

Self-Lubricated Polyisoprene for Medical Septum Applications

May 30, 2012 10:46 am | by Saman Nanayakkara and Shu Peng | Comments

The Project: Develop a system that reduces the needle drag and piercing resistance of the septum and injection site materials to increase product performance. The Solution: Chemists developed a family of self-lubricated polyisoprene materials that have been manufactured with a proprietary lubricant system and show a minimal reduction of physical and mechanical properties.


Practical Challenges for Medical Device Coatings

May 30, 2012 10:25 am | by Josh Simon, Ph.D. | Comments

Before selecting a device coating, physical properties and provided benefits are not the only consideration for device designers. There are other critical factors that can significantly impact efficacy. This article reviews variables such as sterilization methods, shelf-life, and aging which can all have an adverse impact on the coating.

Outsourced Molding Success Springs Up

May 30, 2012 10:02 am | by Tim Nakari | Comments

The Challenge: Identify a partner who is able to aid in the development of an injection molded plastic spring.The Solution: Spectrum was able to deliver the resulting product to Lee Spring for market in eight weeks, from first concept discussions through to final production.

Hydrophilic Enviornments May Promote Easier Device Delivery

May 30, 2012 9:40 am | by John Marugg, Ph. D. | Comments

As minimally invasive technologies continue to permeate the healthcare industry, device makers need to ensure that their products make the process as smooth as possible. To this end, one solution offered to the OEMs focusing on device delivery is a hydrophilic coating that helps minimize resistance the catheter could face when traveling through the body.

UV LED Curing for Medical Devices

May 30, 2012 9:17 am | by Richa Anand, Ph.D. | Comments

UV LED curing refers to a technique that utilizes “energy” output from the LEDs in the UV spectrum to treat inks, coatings, adhesives, and other UV curable materials. The energy generated by the ultraviolet light triggers a chain reaction, resulting in polymerization of the wet raw material, thus hardening (or curing) the material. This article looks at the technology.

Manipulating Materials for Orthopedic Implants

May 30, 2012 6:20 am | by Walter W. Heitmann | Comments

The use of today’s advanced materials can be advantageous for orthopedic implants and instruments as they can offer a variety of benefits. However, they can also create challenges for developers concerned with getting the exact tolerances needed. Machining these materials to achieve the desired results is a service best outsourced to a solutions partner who is an expert with a given material.


‘Re³-inforced’ Converters for Maximized Patient Protection

May 30, 2012 5:32 am | by Jordi Torrebadell | Comments

Since medical electrical equipment must conform to a high safety standard, DC/DC converters are often used to provide the required electrical isolation. Reinforced isolation offers an additional level of safety beyond the standard, but up until recently, it was extremely difficult to find compact DC/DC converters with the large air and creepage distances required to meet the definition for reinforced isolation.

Challenging Channels: Successfully Designing Multi-Lumen Tubing

May 29, 2012 1:03 pm | by Linda Maher | Comments

The purpose of a multi-lumen tube is to enable different functions within the smallest diameter possible in order to promote less invasive procedures. The complexity of the tubing can vary from multi-lumen extruded tubing to reinforced and steerable catheters. This article provides information on the construction of these catheters.


You may login with either your assigned username or your e-mail address.
The password field is case sensitive.