Intracranial pressure telemetry system. I. Hardware development.

W H Ko; A Leung; E Cheng; R J Lorig

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PubMed · 7295930

Intracranial pressure telemetry system. I. Hardware development.

W H Ko·A Leung·E Cheng·R J Lorig

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Abstract

Results in the development of intracranial pressure(ICP) telemetry systems are reported. Included are a single-channel ICP system and a two-channel ICP and temperature system. The unit used hybrid-integrated circuits housed in a Kovar flatpack and packaged with polyurethane or Hysol epoxy. Battery and radio frequency (RF) induction power supplies were tested. The two-channel systems used RF power at 3.5 MHz and transmitted signals around 120 MHz. The package measures 3 x 2 x 0.8 cm and weighs 9 g. The pressure range is -20 to +100 mm Hg with accuracy to 1.0 mm Hg. The implant measures absolute pressure and has a baseline stability of better than +/- 2 mm Hg/month. 17 dogs and 4 goats were used for in vivo evaluation. A summary of results is presented. Detailed evaluation is given in section II of this paper.

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Animals Body Temperature Dogs Electric Power Supplies Evaluation Studies as Topic Goats Humans Intracranial Pressure Prostheses and Implants Telemetry Journal Article Research Support, U.S. Gov't, P.H.S.

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W H Ko, A Leung, E Cheng, R J Lorig. 1981. Intracranial pressure telemetry system. I. Hardware development.. https://pubmed.ncbi.nlm.nih.gov/7295930/

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