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New Encapsulation Concepts for Medical Ultrasound Probes – A Heat Transfer Simulation Study

New Encapsulation Concepts for Medical Ultrasound Probes – A Heat Transfer Simulation Study

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Del av bok/rapport
Sammendrag
Thermal management is important for medical ultrasound probes to maintain optimal performance, reliability, and lifetime of the devices, as well as to avoid heat-induced damage to the patients’ tissue. This paper presents heat transfer simulations of the scan head of a trans-esophageal echocardiography (TEE) ultrasound probe, which operates temporarily inside the human esophagus for cardiac imaging. The current encapsulation design of the scan head requires manual assembly of several prefabricated parts to ensure functionalities such as heat spreading, electromagnetic interference (EMI) shielding, electrical isolation and biocompatibility. New encapsulation concepts that provide a more efficient manufacturing process while maintaining the multi-functional performance are desirable. The objective of this study is to screen encapsulation designs and materials which can simplify the encapsulation of the scan head. The main output to consider from the simulations is the maximum surface temperature of the scan head, which must be below 43 °C to ensure thermal safety for patients. Two encapsulation concepts are analyzed: single-layer encapsulation and double-layer encapsulation. The simulation results show that a double-layer encapsulation, such as a polymer-coated metal encapsulation or a metallized polymer encapsulation, can fulfill the requirements regarding heat transfer, EMI shielding, electrical isolation and biocompatibility.
Oppdragsgiver
  • Norges forskningsråd / 269618
  • Norges forskningsråd / 245963
Språk
Engelsk
Forfatter(e)
  • Do Nu Bich Duyen
  • Andreassen Erik
  • Edwardsen Stephen
  • Lifjeld Anders
  • Nguyen Hoang-Vu
  • Aasmundtveit Knut
  • Imenes Kristin
Institusjon(er)
  • Universitetet i Sørøst-Norge
  • SINTEF Industri / Materialer og nanoteknologi
  • GE Vingmed Ultrasound AS
År
2019
Forlag
IEEE conference proceedings
Bok
2019 22nd European Microelectronics and Packaging Conference & Exhibition (EMPC)
ISBN
978-0-9568086-6-0