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Picosun Expands Selection of Biocompatible ALD Materials for Medical Applications


News provided by

Picosun Oy

04 Nov, 2019, 05:00 GMT

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ESPOO, Finland, Nov. 4, 2019 /PRNewswire/ -- Picosun Group, the leading supplier of AGILE ALD® (Atomic Layer Deposition) thin film coating solutions for global industries, expands its selection of biocompatible ALD materials to be used in medical applications.

Picosun's TiO2 and Al2O3 processes are already used in production of surgical implants and in drug particle coating for controlled drug delivery. Now, also HfO2, SiO2, ZrO2, Nb2O5, Ta2O5, AlN and TiN ALD films manufactured by Picosun have been tested and validated by an independent third party to be non-cytotoxic and safe to human tissues in e.g. implant applications (*).

This wide variety of materials gives great flexibility in designing novel ALD solutions for a plethora of healthcare uses, when the materials can be used either as such, or combined into nanolaminates or doped films with unique, application-wise tailorable physico-chemical properties.

ALD, with its innate ability to create ultra-thin material layers with the highest conformality, uniformity, and structural quality, has enormous potential to solve various key issues in medical applications where implantable devices are involved. Orthopaedic implants, pacemakers, implantable hearing or eyesight aids, microimplants for sensing, monitoring and analysis applications, and brain or heart probes for therapeutic or diagnostic uses all contain parts that are sensitive to the corrosive environment of the human body. Protective encapsulation of these devices is thus needed to ensure their correct operation, long enough operational lifetime, and also to protect the body from the possible rejection reaction or contaminant leakage from the devices' corroding parts. Various polymer layers have typically been used as encapsulants, but their downside is their thickness and robustness which unnecessarily increases the mass and dimensions of the implant.

Compared to polymer encapsulation, ALD offers a truly elegant, sophisticated solution to implant manufacturers. Practically massless and invisible, but still dense, flexible, pinhole- and crack-free ALD thin films cover reliably even the smallest microscale surface features of the coated object, they can be applied at moderate temperatures, and - as now analysed in medical industry's standard tests - several ALD materials are intrinsically biocompatible. As ALD is a mature, key enabling technology in semiconductor and microelectronics manufacturing for decades already, the processes and practises for industrial introduction and ramp-up exist, and can be readily applied to new fields as well.

"Healthcare sector is one of our key strategic directions. Our patented know-how of ALD-based biocompatible protective encapsulation for implantable medical devices has already raised significant interest amongst industry leading companies. We are pleased that we have now even wider portfolio of materials and solutions that we can provide to these companies. Not only can our ALD technology solve several challenges these industries are currently facing, but also enable completely new components and devices to realize future's healthcare inventions," states Dr. Jani Kivioja, CTO of Picosun Group.

(*) FICAM - The Faculty of Medicine and Health Technology, University of Tampere, Finland: Cytotoxicity tests with cell culture medium according to the ISO 10993-5 standard, and 3 weeks soaking tests in PBS (phosphate-buffered saline) at 87 oC.

Picosun provides the most advanced ALD thin film coating technology to enable the industrial leap into the future, with turn-key production solutions and unmatched expertise in the field. Today, PICOSUN® ALD equipment are in daily manufacturing use in numerous major industries around the world. Picosun is based in Finland, with subsidiaries in Germany, North America, Singapore, Taiwan, China and Japan, offices in India and France, and a world-wide sales and support network. Visit www.picosun.com.

More information:
Dr. Jani Kivioja
CTO, Picosun Group
Tel. +358 46 922 8804
Email: jani.kivioja@picosun.com
Web: www.picosun.com
 

Contact:

Minna Toivola
D.Sc., Marketing Manager, Picosun Oy
Email: minna.toivola@picosun.com
Tel: +358 40 758 8748

This information was brought to you by Cision http://news.cision.com

https://news.cision.com/picosun-oy/r/picosun-expands-selection-of-biocompatible-ald-materials-for-medical-applications,c2952663

The following files are available for download:

https://mb.cision.com/Main/16058/2952663/1134946.pdf

Release

https://news.cision.com/picosun-oy/i/microimplant-electronics-protected-by-picosun-s-ald-hfo2--no-changes-after-soaking-in-87-oc-pbs-for-,c2710791

Microimplant electronics protected by Picosun’s ALD HfO2. No changes after soaking in 87 oC PBS for over 3 months which correlates to over 10 years in human body. T0 = starting point of the test. Refe

https://news.cision.com/picosun-oy/i/tem-micrographs-of-picosun-s-ald-nanolaminate-and-oxide-encapsulants-after-one-month-soaking-tests-i,c2710792

TEM micrographs of Picosun’s ALD nanolaminate and oxide encapsulants after one month soaking tests in 87 oC PBS. No corrosion observed.

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