Sterile drape

A system, comprising:

• a controller for a mechanically-enabled apparatus;
• and
• a sterile drape encasing the controller, comprising:
• a first sheet, including:
• a first part of the first sheet having first contours configured to conform to a first surface of the controller, and
• a second part of the first sheet comprising a planar extension of the first part of the first sheet;
• a second sheet, including:
• a first part of the second sheet having second contours configured to conform to a second surface of the controller, and
• a second part of the second sheet comprising a planar extension of the first part of the second sheet;
• a seal extending along a first portion of a perimeter of the first sheet and along a corresponding first portion of a perimeter of the second sheet, sealing the second sheet to the first sheet along the seal and thereby forming a cavity for the controller between the first part of the first sheet and the first part of the second sheet;
• and
• an opening extending along a second portion of the perimeter of the first sheet and along a corresponding second portion of the perimeter of the second sheet, the opening comprising an access to the cavity, via the second part of the first sheet and the second part of the second sheet.

A sterile drape for a medical implement, comprising:

• a cavity configured to conform to an outer surface of the medical implement and to encase the medical implement;
• a planar envelope extending laterally from the cavity, with access to the cavity;
• and
• an opening at a distal portion of the planar envelope and configured to provide access to the cavity via the planar envelope.