Patent ID: 8721582

Claim:
A method of delivering dry powder to an internal operation site of beings, comprising the steps of: (a) extending a distal end of an elongated tubular delivery channel to a position adjacent to said internal operation site, wherein said delivery channel is flexible and is extended via endoscope, wherein a length of said delivery channel is longer than a length of said endoscope, wherein the step (a) further comprises a steps of: (a.1) extending an operation channel along with said delivery channel; (a.2) extending an operation cable within said operation channel, wherein one end of said operation cable is connected to an end cap and another end is connected to a handle, wherein said end cap normally covers an emitting opening of said distal end of said delivery channel; and (a.3) opening said end cap by an actuation of said handle after said distal end of said delivery channel reaches to said position adjacent to said internal operation site; (b) producing pressurized gas and mixing said pressurized gas with dry powder to form a mixture of dry powder and pressurized gas in a gas-powder chamber communicating with a feeding opening of said delivery channel; and (c) continuously feeding said mixture of dry powder and pressurized gas from said gas-powder chamber into said delivery channel via said feeding opening until a predetermined amount of said mixture of dry powder and pressurized gas sprays out from said emitting opening of said distal end of said delivery channel for application onto said internal operation site.