Kevin Childs was convicted in February on three counts of aggravated criminal sexual assault.
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Prosecutors said he assaulted two women who were patients at Saint Anthony hospital, when he worked there as a patient care technician.
Childs will also have to register as a sex offender.
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A judge previously said the alleged victims had been in Childs' care for treatment of serious medical conditions.
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"You are preying on the most weak of the community," Judge Charles Burns said.
Sun-Times Media contributed to this report.
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