INJECTION NEEDLE FOR ENDOSCOPE

摘要

PROBLEM TO BE SOLVED: To provide an injection needle for an endoscope where a needle body projects reliably even when a clearance between an inner cylinder catheter and an outer cylinder catheter is narrowed and which slides smoothly in the forceps apertures of the endoscope.

SOLUTION: The injection needle for an endoscope consists of the outer cylinder catheter (3) having a lumen and the inner cylinder catheter (2) inserted to the lumen of the outer cylinder catheter (3) and moving forward and backward freely. On the inner wall surface and/or the outer wall surface of the outer cylinder catheter (3), a plurality of ribs (6) are formed.

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