US 11,944,842 B2
Photodynamic therapy device and methods of use
Nikhil M. Murdeshwar, Maple Grove, MN (US); and Thomas J. Holman, Princeton, MN (US)
Assigned to Gyrus ACMI, Inc., Westborough, MA (US)
Filed by GYRUS ACMI, INC., Southborough, MA (US)
Filed on Dec. 17, 2020, as Appl. No. 17/125,598.
Claims priority of provisional application 62/951,447, filed on Dec. 20, 2019.
Prior Publication US 2021/0187315 A1, Jun. 24, 2021
Int. Cl. A61N 5/06 (2006.01)
CPC A61N 5/062 (2013.01) [A61N 5/0603 (2013.01); A61N 2005/0611 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A therapy device for providing photodynamic therapy to a target tissue, the therapy device comprising:
an outer shaft extending from a proximal portion to a distal portion; and
a surgical instrument translatable within the outer shaft, the surgical instrument including:
a treatment end located at the distal portion, the treatment end configured to advance from the outer shaft and configured to apply a photosensitizer and deliver phototherapeutic light to a treatment region including the target tissue, the treatment end including:
a phototherapeutic light containment device surrounding the treatment end of the surgical instrument in an expanded configuration and configured to contain phototherapeutic light within the treatment region, the treatment region including the target tissue;
wherein the phototherapeutic light containment device is configured to be advanced from the outer shaft and a distal end of the phototherapeutic light containment device is configured to contact at least a portion of a perimeter of the treatment region; and
a distension device translatable within the outer shaft and configured to expand around the phototherapeutic light containment device.