Devices and methods for a cannula-delivered treatment material application device

A surgical instrument comprising:

• an elongate tubular member having a proximal end, a distal end, and a lumen extending therebetween, the elongate tubular member being configured for insertion into a cavity of a patient;
• a fluid source system coupled to the lumen of the elongate tubular member, wherein the fluid source system comprises:
• a reservoir comprising a treatment fluid;
• and
• a dispensing system, coupled to the elongate tubular member, configured to cause the treatment fluid from the reservoir to be dispensed through the lumen of the elongate tubular member;
• and
• a wicking member extending beyond the distal end of the elongate tubular member, the wicking member configured to secure a volume of the treatment fluid delivered through the lumen to the wicking member for application from the wicking member to target tissue in the cavity;
• wherein the wicking member comprises a loop of a material extending out from the lumen of the elongate tubular member;
• wherein the loop comprises a closed distal end and wherein a proximal end of the loop extends into the elongate tubular member to receive the treatment fluid.