US Patent 11751904 Pixel array medical systems, devices and methods

Embodiments include a system comprising a carrier and a cannula assembly. The carrier includes a proximal end and a distal end, and the proximal end is configured to removeably couple to a remote console. The cannula assembly, which is configured to removeably couple to the distal end of the carrier, is configured for rotational fractional resection (RFR) and includes at least one cannula rotatably coupled to the carrier and enclosed in a depth guide configured to control an insertion depth of the at least one cannula. The depth guide includes a vacuum chamber configured to form vacuum to evacuate resected tissue generated by the RFR.