Abstract
Approximately 50–75 μW (microwatts) of electrical power can be obtained from an implantable platinum-black aluminum electrochemical cell. The implantations have been conducted in twelve rabbits for periods up to 200 days. The intensity of the initial tissue reaction and accumulation of insoluble aluminum oxidation products appear to be the factors limiting useful power available.
These data, together with the low power requirement of implantable electronic devices (pacemakers, telemeters, etc.), suggest the feasibility of using these types of electrodes as a long term power source.
Sommaire
Une cellule électrochimique implantable en platine-alumine peut fournir une puissance électrique d’environ 50–75 μW. Les implantations ont été pratiquées sur 12 lapins pour des périodes allant jusqu’à 200 jours. L’intensité de la réaction initiale du tissue et l’accumulation des produits d’oxydation de l’alumine insolubles apparaissent être les facteurs limitant la puissance utile disponible.
Ces données, ainsi que la faible puissance requise par les dispositifs électroniques implantés (pacemakers, radio-sondes, etc.) laissent penser que l’on pourra utiliser ces types d’électrodes comme source de puissance de longue durée.
Zusammenfassung
Etwa 50 bis 75 μW (Mikrowatt) elektrischer Leistung können von einer implantierbaren elektrochemischen Platin-Aluminium-Zelle abgeleitet werden. Bei Kaninchen wurden sie bis zu 200 Tagen Dauer implantiert. Das Ausmaß der anfänglichen Gewebsreaktion und der Ansammlung unlöslicher Aluminiumoxydationsprodukte scheinen die Nutzleistung zu begrenzen.
Diese Angaben und der niedrige Strombedarf implantierbarer elektronischer Geräte (Schrittmacher, Telemetrie usw.) lassen eine nutzbringende Anwendung dieser Elektrodentypen als Dauerstromquellen erwarten.
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Supported in part by Grants No. 2 T1-HE-5417-08 and HE-HD 10150-01S1 from the National Heart Institute, NIH, Bethesda, Maryland.
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Massie, H., Racine, P., Pasker, R. et al. Study of power generating implantable electrodes. Med. & biol. Engng. 6, 503–516 (1968). https://doi.org/10.1007/BF02474289
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DOI: https://doi.org/10.1007/BF02474289