annulus 47 in one embodiment of the present invention lumen 49 extends from annulus 47 proximally towards operating unit 15 fig1 where lumen 49 may be coupled with for example a fluid pump or manual fluid injection assembly lumen 49 may be secured to flexible shaft 14 by an adhesive covered in a sheath or secured by any other suitable coupling means anesthetic collar 45 may be permanently affixed or detachably coupled to flexible shaft 14 when detachably coupled anesthetic collar 45 may be held to flexible shaft 14 by an adhesive by creating a high coefficient of friction heat shrink tubing shrink fit heat shrink threaded section and or by any other suitable coupling means anesthetic collar 45 allows lubricants local anesthetics dyes and or other desirable fluids to be passed through the existing lumen of flexible shaft 14 into annulus 47 where the fluid may be distributed through expulsion pores 48 into the gastrointestinal tract the embodiment of fig4 is well suited for use with an endoscope that does not have an internal lumen available for fluid delivery utilizing existing lumens secured to e g fig4 or found in e g fig6 flexible shaft 14 the present invention allows those fluids that may reduce the pain and discomfort associated with endoscopies such as for example local anesthetics and lubricants as well as fluids that may be helpful in diagnosing patients such as dyes to be distributed in an even fashion throughout the gastrointestinal tract placing anesthetic collar 45 towards the distal section.