FREE ADMISSION - No need to register, just show up!!
Meeting Date: November 8, 2012
Time: 2:00 - 5:00 pm
SEMI Global Headquarters
Seminar Rooms 1 & 2
3081 Zanker Road
San Jose, CA 95134
**Park in SEMI Global parking lots ONLY**
2:00 - 2:10 Welcome and Introduction
2:10 - 2:50 "Electrosurgical Devices and Plasma Medicine", Kenneth R. Stalder, ArthroCare Corp.
Electrosurgical devices employing plasmas to ablate, cut and otherwise treat tissues have been in widespread use for decades. Following d'Arsonval's 19th century work on the neuromuscular response from high-frequency excitation of tissue, Doyen treated skin blemishes with a sparkgap generator in 1909. In the late 1920's, physician Harvey Cushing and physicist William Bovie developed an electrosurgical device and power source that eventually became a standard of care for cutting, coagulating, desiccating, or fulgurating tissue. Beginning in the 1990's a new class of low-voltage electrosurgical devices employing electrically-conducting saline fluids were developed by ArthroCare Corp. These modern Coblation® devices are now widely used in many different surgical procedures, including those in arthroscopic surgery, otorhinolaryngology, spine surgery, urology, gynecological surgery, and others. This talk will include an introductory review of some of the research we have been doing over the last decade to elucidate the physics and chemistry underlying Coblation® electrosurgical devices. Electrical-, thermal-, fluid-, chemical- and plasma-physics all play important roles in these devices and give rise to a rich variety of observations. Experimental techniques employed include optical and mass spectroscopy, fast optical imaging, and electrical voltage and current measurements. Many of the features occur on fast time scales and small spatial scales, making laboratory measurements difficult, so coupled-physics finite-element-modeling can also be employed to glean more information than has been acquired so far through physical observation.
Ken Stalder is an experimental physicist working on plasma-based surgical devices. He earned is Ph.D. in physics at UC Berkeley and worked on semiconductor plasma processing for Applied aterials in the 1980s. From the mid-1980s through the 1990s he worked as a research physicist in the Molecular Physics Laboratory at SRI International and worked on a variety of projects including diagnostics of diamond film deposition, charged particle beam diagnostics, diagnostics of plasmas produced by high power microwaves, etc. He started an independent consulting business in 2000 and began working for ArthroCare Corp. on plasma-based electrosurgical devices and where he currently is a Senior Staff Scientist and Technical Fellow. He is a Fellow of the American Physical Society and also is a former Chair of the PEUG.
3:00 - 3:40 "Biomedical Application of Low Temperature Plasmas", Yukinori Sakiyama, Dept. of Chemical Engineering, UC Berkeley
The biomedical application of low temperature plasmas is a rapidly growing research frontier in plasma science and technology. Various investigators demonstrated exciting and promising results, including cancer treatment and wound healing. I will present a review of those research efforts on plasma medicine. Also, brief updates will be given on selected on-going topics in Graves group at UC Berkeley.
Yukinori Sakiyama received Ph.D. in Mechanical Engineering from The University of Tokyo in 2002. After serving as an Assistant Professor for five years at the University Tokyo, he joined Graves group in University of California at Berkeley as a research specialist. He has been served as guest editors of IEEE Transaction on Plasma Science and as session chairs and organizers in many international conferences. His primary research interest is biomedical applications of low temperature plasmas.
3:40 - 4:00 Break
4:00 - 4:40 "Overcoming Challenges in the Medical Device Industry by Using Plasma", David Foote, Nordson MARCH
The medical device industry is highly regulated and demands reliable, reproducible components and manufacturing processes to satisfy those regulations. Regulated devices range from a simple bandage to the most complex implantable heart defibrillator. Producing these devices requires rigorous testing and validation of the materials and the processes used to assemble them. Challenges include bio-compatibility, material mismatch, implant duration, ability to withstand sterilization, wettability, lubricity, and so on. Plasma processing addresses many of these challenges, enabling more reliable and robust devices. Plasma has been proven to enhance surface wettability, remove surface contamination, improve bonding and maintain the bulk properties of the material treated. This presentation will highlight a number of plasma applications that specifically address the needs of the medical device community.
Mr. Foote is Global Applications Manager with Nordson MARCH. Mr. Foote has an extensive background in chemical vapor deposition (CVD) with a focus on plasma enhanced chemical vapor deposition (PECVD.) Prior to working with Nordson MARCH, he developed CVD processes in the semiconductor and semiconductor equipment industries. While working at Advanced Micro Devices he was instrumental in the development of a novel PECVD antireflection coating (ARC.) The ARC film has become the landmark standard for films of its kind in the semiconductor industry. Following Advanced Micro Devices, Mr. Foote joined Genus where he was responsible for the development of tungsten based semiconductor CVD and PECVD processes and hardware platforms. While with Genus, Mr. Foote was responsible for the development of atomic layer deposition (ALD) processes and platforms. Following Genus, Mr. Foote consulted on the process development for the manufacture of micro electro-mechanical systems (MEMS) for SiTime. With Nordson MARCH, Mr. Foote is responsible for the development and implementation of plasma processes for semiconductor packaging, printed circuit boards and plasma processes to enhance the quality of medical devices. He has developed processes for the improvement of material adhesion, biocompatibility and manufacturability for use in implantable devices as well as peripheral devices. He is an expert at both the plasma treatment of surfaces as well as the plasma deposition of polymer films used in the medical device industry. Mr. Foote holds a B.S. degree in Chemical Engineering from the University of Cincinnati. He has been granted over 35 patents in the areas of semiconductor processing, integration and hardware.
4:40 Close of Meeting