TETS: ASAIO Journal Article 1999

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TETS: ASAIO Journal Article 1999 Internal Battery Backup - Lithium Ion Power Power: 20 W (η = 84%) 34 W (η = 71%) Consumption of battery @ 20W - 62min Benefits: very little loss of flux, stable operation, high transmission efficiency

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TETS: ASAIO Journal Article 1999. Internal Battery Backup - Lithium Ion Power Power: 20 W (η = 84%) 34 W (η = 71%) Consumption of battery @ 20W - 62min Benefits: very little loss of flux, stable operation, high transmission efficiency. TETS Safety. - PowerPoint PPT Presentation

Transcript of TETS: ASAIO Journal Article 1999

Page 1: TETS: ASAIO Journal Article 1999

TETS: ASAIO Journal Article 1999

• Internal Battery Backup - Lithium Ion Power

• Power:• 20 W (η = 84%)• 34 W (η = 71%)

• Consumption of battery @ 20W - 62min

• Benefits: very little loss of flux, stable operation, high transmission efficiency

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TETS Safety• The power of electromagnetic wave absorbed by tissue

per unit mass of 1 kg is used to evaluate the thermal effect (SAR)

• Previous device: SAR = 0.3 W/kg @40 W• Safety level: SAR = 8 W/kg

• Established by the Ministry of Public Management, Home Affairs, Posts and Telecommunications of Japan.

• Tested on a goat with 20-40 W transmitted continuously for 4 months

• No negative effects on the goat tissue

• http://www.natureinterface.com/e/ni03/P081-082/• Nature Interface Quarterly Magazine (Japanese)

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TETS: ASAIO Journal Article 1993• Maximum power output:

– 60W @ 5mm (η = 75-80%)– 45W @ 15mm (η = 75-80%)

• Induction coils: must be placed closely together and orientated correctly

• Uses frequencies and “tunes” each coil providing power

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TETS: ASAIO Journal Article 2000• Power output: 27-30W

• AC-AC: η = 97%• DC-DC: η = 84%

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Thoratec TETS: ASAIO Journal Article 2004

• Max output of 45W • η = 80%

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The AbioCor Total Artificial Heart System

• Supplies power to Abiocor Total Artificial Heart

• The TET system implemented is proprietary and getting rights would be nearly impossible

• The total system costs ~$250K