Rob Phillips

Transcript

1. Harnessing battery innovation for next-generation medical devices Rob Phillips Managing Director, Accutronics Ltd rob.phillips@accutronics.co.uk
2. • Cutting edge technology – Wearable medical devices – Implantable/consumable medical devices etc. • New opportunities/applications for device portability – Portable Digital Radiography – Medical carts etc. • Established device applications with battery upgrade potential – Portable and transportable patient ventilators – Patient lifters – Patient monitors etc. “How do we access the latest battery & charger technology?” “How do we ensure our power solution is secure & upgradeable throughout our medical device product lifecycle?” What do we mean by next-generation medical devices?
3. In the world of consumer portable electronic products, rechargeable Lithium Ion technology has revolutionised the way we communicate, work and play. Without this technology notebook computers, PDAs, media players and mobile phones would be unpractical, bulky and heavy devices. Today, everyone expects portability in their professional lives too Medical device designers and manufacturers should not get left behind! With recent advances in Lithium ion technology providing products which are also designed for high rate and back-up applications there remain few reasons why all developers and manufacturers of battery powered products should not embrace this technology and provide their customers with the end user benefits that this technology can bring. It’s a portable world
4. Battery pell chemistry Rechargeable Lithium Ion technology was introduced to the market by Sony in 1991 and now powers most of the worlds portable electronic products Advantages ► High volumetric and gravimetric energy density ► High degree of safety ► Good cycle life ► Low self discharge characteristics ► higher cells voltage means fewer cells per device Li-Ion is replacing NiCd, NiMH & SLA in all but the most cost sensitive applications Energy Density Comparison 'NiCd Vs NiMH Vs LiIon' 0 50 100 150 200 250 0 100 200 300 400 500 600 VED (Wh/l) GED (Wh/Kg) LiCoO2 NiCd NiMH LiCoO2 LiIon-Polymer (Laminated) LiFePO4 Li(NiCoMn)O LiMn2 O4 Volumetric Energy Density (Wh/l) Gravimetric Energy Density (Wh/Kg) Evolution of cell technology
5. • Staggering rate of technological change in consumer electronics • Medical device OEMs are striving to adopt these latest technologies • Short consumer product life cycles drive component and technology obsolescence • Mobile phone PLC = 6-9 months • Medical device service life = >10 years • In the Medical device sector, a sustainable approach to product design and purchasing is required, to ensure that component/technology obsolescence does not disrupt or prematurely terminate the device’s planned product life The Product Life Cycle Challenge
6. Future-Proofing your Battery Solution: Cell Availability Battery Co • Your battery partner should monitor & understand battery and device trends • Unbiased cell selection • Design for redundancy • Prefer cells with standardised specification and broad usage Big Consumer Device Co
7. Future-Proofing your Battery Solution: ‘Smart’ Technology System Management Bus (SMBus) http://smbus.org/ Smart Battery Systems specifications http://www.sbs-forum.org “Smart batteries are capable of providing far more information Than you see on your Windows® task-bar!”
8. • The reliability, safety and correct certification of batteries is critical for Medical applications • EN60601-1 is not applicable to batteries but IEC 62133 (a battery safety standard) is required • A CB certificate from a Nationally Recognised Testing Laboratory (NRTL) must be made available • UL2054 is required for the USA market • The transportation of Lithium Ion batteries by air, sea & road is regulated (UN 38.3) • Lithium ion cell and batteries MUST pass specific UN tests (called the T1 – T8 tests) to ensure they are safe to transport • Li-Ion batteries must be packed and labelled in accordance with the regulations. Strict paperwork requirements must be met. • Li-Ion batteries >100Wh must be transported as regulated class 9 dangerous goods, even if they have passed the T1–T8 tests. • Li-Ion batteries <100Wh must be transported as regulated class 9 dangerous goods if more than 2 are shipped in a box. • Having to ship Li-Ion batteries as regulated dangerous goods increases costs & reduces supply chain flexibility Safety, Certification & Regulation
9. • Wearable/implanted medical devices • Portable medical devices • Transportable medical devices Case Studies/Application examples
10. • Application: Capsule Endoscopy • A primary (non-rechargeable) coin cell powers the PillCam • The Patient-worn digital data recorder is powered by a smart rechargeable Lithium Ion battery – High energy density prismatic Li-Ion cells – Lightweight, slim and long run-time – Highly accurate run-time information from impedance-tracking fuel gauge – Battery protection electronics assure safety even under abuse Wearable/Implanted Medical Devices
11. • Applications: wearable wireless devices, chronic disease monitors, pulse oximeters etc • Light & small: exactly credit-card size • The latest, lightest Lithium Ion cells • Excellent mechanical & electrical protection • Two models, 8mm & 14mm thickness • Tested & approved to international standards • Customisable case colour, fuel gauge firmware, labelling & packaging • Excellent support package for the OEM designer Portable Medical Devices
12. Transportable Medical Devices • Applications: medical carts, patient ventilators, dental scanning, automated lab equipment, medical UPS etc. • Future-proofed • Scaleable • Custom-configurable • High energy density • Delivers >100Whrs without the costs of Class 9 shipping
13. • Medical applications requiring battery power range from new breakthrough technologies to well-established devices in need of upgrade • The challenge is to convert your high-technology concept into a deliverable solution • Over the past decade, developments in the consumer and professional device markets have made rechargeable Lithium Ion the best technology for most medical device applications • Medical device designers should seek unbiased, expert assistance • It is important to understand the battery industry structure & dynamics • Unbiased cell selection, design redundancy and chemistry independence are important factors • Ensuring a secure, upgradeable power solution throughout the whole of the device’s product life cycle will help deliver long-term profitability from your battery-powered medical device • Initial concept is vanity • Profitable delivery is sanity! Summary
14. Questions? +44 (0)1782 566688 sales@accutronics.co.uk www.accutronics.co.uk