PubMed · 355246
Controlled mechanized trepan.
Abstract
A mechanized trepan is described whose cutting action is halted automatically when the trepan's cutting edge reaches the last 0.03 mm. tissue layer of the cornea. The automatic half of both the motor which advances the trepan as well as the second motor which rotates the trepan is triggered by the sudden change in electrical resistance between the trepan and the patient's internal body fluid, at the final stage of penetration. This automatic feature eliminates the danger of inadvertant damage to the inner structures of the eye.
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J Kam, E M Goldratt, Y R Barishak, R Stein. 1978. Controlled mechanized trepan.. https://pubmed.ncbi.nlm.nih.gov/355246/
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