Patent ID: 8591406
Filing Date: 2013-11-26
Classification: A61B

Abstract:
1. An endoscope comprising: an observation port that is provided at a distal end of said endoscope, and collects light reflected from an object; a fluid supply pipe that transmits gas and/or liquid to a distal end thereof; a cap that blocks the distal end of said fluid supply pipe and is configured so that a partially enclosed semispherical space is created between the distal end of said fluid supply pipe and an inner surface of said cap; a fluid ejection channel that has an outlet facing said observation port, and extends from an edge of an opening at the distal end of said fluid supply pipe to the outlet and occupies the semispherical space inside said cap; and a direction adjustment protrusion that extends over the outlet in a lengthwise direction of said fluid ejection channel, wherein when the outlet faces said observation port, a plane of projection projecting toward said observation port is parallel to the outlet and a lengthwise direction of the plane of projection is parallel to a circumferential direction of the outlet, said direction adjustment protrusion is configured at a center of said outlet in the circumferential direction, and a downward projected length of said direction adjustment protrusion continuously increases in the lengthwise direction of said fluid ejection channel toward the outlet, such that said direction adjustment protrusion extends toward a center of the fluid ejection channel.