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Jabil’s Nypro Healthcare focusing on mechatronics.
Jabil’s Nypro Healthcare focusing on mechatronics.
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Plastics save lives. Pure and simple. What often gets lost in the demonization of plastics due to their waste-related challenges is the fact that modern healthcare is heavily reliant on the material and, in fact, could barely function without it.

Last October, National Geographic magazine ran a story titled “Can Medical Care Exist Without Plastic?”, and noted that “Single-use plastic can be an attractive option for hospitals – cheap, durable, and easily tossed out – and each new fresh plastic container or covering offers a newly sterile environment. That’s why clinicians cover themselves and everything they use in plastic.”

Various types of plastics and elastomeric materials serve countless uses in the medical and healthcare arena – from basic items such as gloves, tubing, eyeglasses, blood bags and disposable syringes, to high-tech, biocompatible applications such as heart valves, joint replacements and 3D-printed prosthetic limbs.

Ultra-high molecular weight polyethylene (UHMWPE), for example, is excellent for use in prosthetics, while polypropylene’s high-heat properties make it ideal for applications where autoclave sterilization and radiation stabilization processes are required, according to global materials supplier Trinseo (formerly known as Styron).

Companies such as Jabil-owned Nypro Healthcare also delve deeply into the engineering aspects of medical devices. Nypro focuses heavily on mechatronics, a design process that involves integrating mechanical and electrical hardware with software processes, thereby enabling device designers to deliver highly sophisticated mechatronic functionality.

One of the major healthcare trends affecting mechatronics technology is miniaturization,” notes Nypro. “Ever-smaller instruments, devices, and equipment are being developed to enable less-invasive surgical techniques that enable faster recovery.” The use of micro-actuators and micro-sensors is driving the development of tiny mechatronics designs for everything from scientific instruments for DNA sequencing to micro-pumps and auto-injectors for drug-delivery products.

Evonik is 3D printing high-end implants.Additive manufacturing also is playing an increasing role in healthcare delivery. Germany’s Evonik Industries AG, for instance, recently invested in Meditool, a Chinese 3D printing start-up specialized in implants for neuro and spinal surgeries. Using 3D models generated by Meditool’s own software, Evonik can print implants using its high-performance polyetheretherketone (PEEK) polymers.

Other materials suppliers are striving to make plastics more resistant to the harsh cleaning chemicals often encountered in hospitals and operating rooms.

Minnesota-based compounder RTP Company has developed a proprietary alloy technology designed to maintain strength, functionality, and integrity, even with repeated exposure to hospital cleaners used to disinfect medical devices. The firm says these thermoplastic compounds, known as the RTP 2000 HC series, “can help solve cracking issues in existing devices and open a new realm of possibilities for the design of hospital equipment and plastic housings that require frequent disinfection, such as mobile ultrasound and x-ray machines, enteral feeding devices, drug infusion pumps, blood filtration equipment, and more.”

RTP also supplied a glass fiber-reinforced PC/ABS alloy compound known as the RTP 2500 Series, to Novare Surgical Systems to use in its RealHand line of minimally invasive surgical instruments. Novare has integrated its RealHand HD technology into a series of endo-laparoscopic instruments such as graspers, dissectors, scissors, and needle drivers.

Kraiburg’s new TPE can combine with nylon in medical devices.Kraiburg TPE, meanwhile, recently launched a new line of thermoplastic elastomers that not only hold certifications for healthcare applications in accordance with European Union and U.S. Food and Drug Administration standards but can also be combined directly with polyamides. Dubbed the MC/AD/PA Thermolast M series, Kraiburg says it is now introducing “the world’s first TPEs for medical applications in composites with polyamides – including transparent PA12.” The compounds are fully certified and suitable for a variety of attractive medical devices, including those used for in vitro diagnostics.

PolyOne Corp. also supplies a number of materials for use in healthcare applications, including for catheters and tubing, and various medical devices. Recently, though, it tackled a slightly different challenge – helping a nonprofit charity called Global Vision 2020 to create a simple, effective way to bring clear eyesight to people living in extreme poverty. The resulting diagnostic device, called USee, allows minimally trained practitioners in the field to accurately test the eyesight of people in impoverished areas.

Another materials firm, Germany’s Covestro, worked closely with Ohio-based medical equipment maker Enable Injections to create a new, on-body drug-delivery system to help patients who need biologic drugs derived from organic sources to treat cancer, diabetes and other diseases.

Biologics need to be injected or infused. Typically, this has required inconvenient visits to specialty healthcare facilities or painful self-injections of high-viscosity medications. Now, patients can wear this Enable device and easily self-administer the doses they need, when they need them. The new system – made with Covestro’s Makrolon Rx1805 polycarbonate in a purple tint, and its Bayblend M850 XF PC/ABS blend – provides the necessary safety, durability and bio-compatibility while being aesthetically pleasing.

And nowhere is plastics more prevalent in healthcare than in packaging. Most drugs are dispensed in some sort of plastic bottle, container or foil-backed blister pack, and packagers increasingly are adding “smart” technologies to such products to improve safety while also helping users to keep track of the medications they are taking.

Alpla’s new child-proof closure simplifies production.Austrian packaging group Alpla, for example, recently introduced CRC justONE, a very light, childproof closure, manufactured in just a single injection molding process with straightforward assembly. Normally, there are three parts to a childproof closure with a tamper-evident band that can only be opened by simultaneously pushing and turning the closure. And these parts typically are produced in three separate production steps and assembled later. This new production process from ALPLApharma, Alpla’s newly consolidated healthcare brand, has now streamlined this into a significantly more efficient workflow.

National Geographic asked the right question recently. And, in short, the current answer is, “No, safe, efficient medical care today cannot exist without plastic.”

Come to CHINAPLAS 2020 in Shanghai this April 21-24 to see first-hand some of the amazing technologies that are helping to enable modern medicine. For more information about CHINAPLAS 2020, please visit the official show website at www.ChinaplasOnline.com.

 


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