A method of illuminating an internal cavity comprising:
- (A) providing an insertable lighting device comprising,
- (a) an optical fiber assembly comprising,
- (i) an optical fiber that is encased at least partially within
- (ii) a pliable sheath,
- wherein said optical fiber assembly is flexible, and has a first optical fiber assembly end that is adapted to emit light, a second optical fiber assembly end, and a first length, said first optical fiber assembly end facing a forward direction,
- (b) an introducer sheath having a second length that is less than said first length and comprising,
- (i) a first introducer sheath end that comprises an incision blade,
- (ii) a second introducer sheath end, and
- (iii) an elongated interior cavity,
- wherein said optical fiber assembly resides slidably within said elongated interior cavity of said introducer sheath,
- said introducer sheath is slidably positionable over and along said optical fiber assembly, and
- said first introducer sheath end faces said forward direction, and
- (c) a light source assembly attached to said second optical fiber assembly end, said light source assembly comprising a light source that introduces light into said optical fiber;
- (B) positioning at least one of, (i) said introducer sheath, and (ii) said optical fiber assembly, such that, said incision blade of said introducer sheath is positioned forward of said first optical fiber assembly end;
- (C) inserting said incision blade and a portion of said introducer sheath through a cavity wall into said internal cavity;
- (D) positioning at least one of, (i) said introducer sheath, and (ii) said optical fiber assembly, such that said first optical fiber assembly end is positioned forward beyond said incision blade and within said internal cavity;
- (E) illuminating at least a portion of said internal cavity with light emanating from said first optical fiber assembly end;
- (F) withdrawing said incision blade and said introducer sheath from said internal cavity, such that said incision blade is positioned externally of an outer surface of said cavity wall, and said first optical fiber assembly end is positioned within said internal cavity,
- wherein said second introducer sheath end comprises a ring extending outwardly from an exterior surface of said introducer sheath, and
- said insertable lighting device further comprises,
- a ring stop extending outwardly from an exterior surface of said pliable sheath, said ring stop being positioned between said second optical fiber assembly end and said second introducer sheath end,
- wherein said ring stop and said ring of said introducer sheath are each dimensioned to engage abuttingly with each other, and
- said method further comprising, after withdrawing said incision blade and said introducer sheath from said internal cavity,
- (G) positioning abuttingly together said ring of said introducer sheath and said ring stop,
- wherein said ring of said introducer sheath and said ring stop are each adapted to engage snap-fittingly with each other, and said ring of said introducer sheath and said ring stop engage snap-fittingly with each other.