The doctor couple, arrested on Tuesday by Uttar Pradesh's Special Task Force (STF), was produced before the court of additional sessions judge Shivanand Singh, who sent them to the Gorakhpur district jail on a 14-day judicial remand.
They were named in an FIR lodged by the UP government.
The two were brought to the court here amid tight security.
There were allegations that the deaths happened due to disruption in the oxygen supply as the vendor had not been paid for several months.
While the Uttar Pradesh government vehemently denied that shortage of oxygen led to the deaths, a high-powered probe committee headed by Chief Secretary Rajive Kumar indicted Mishra and others of laxity and other charges.
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