The endoscope, and a nozzle capable of discharging the fluid is located between the distal end rigid portion provided at the distal end of the insertion section, a state of being through the distal end assembly. A tip tubular body having a first hole portion of the nozzle is disposed, and a second hole portion provided coaxially with the first hole portion, the distal end rigid portion, the second hole and a first engaging portion provided on the edge of, and a front cover for covering the outer periphery of the tip body. The nozzle position protruding from the distal end surface of the end cover with the flow path capable of one end, the other end, the flow of fluid towards one end from the other end, with disposed in said one end There are core cylindrical member having a nozzle opening disposed on the outside of the core member, has a self-restoring property to retain its shape is elastically deformable, wherein the first engagement of the tip cover is provided with the second engaging portion to ensure water-tightness and airtightness of the interior of the insertion portion is engaged with the engagement section, the other end of the core member, the first hole of the tip body I have a connecting portion of the cylindrical which is connected to.内視鏡は、挿入部の先端部に設けられた先端硬質部と、前記先端硬質部を貫通した状態に配置され流体を吐出可能なノズルとを有する。前記先端硬質部は、前記ノズルが配設される第1孔部を有する筒状の先端部本体と、前記第1孔部と同軸上に設けられた第2孔部と、前記第2孔部の縁部に設けられた第1係合部とを有し、前記先端部本体の外周を覆う先端カバーとを有する。前記ノズルは、一端と、他端と、前記他端から一端に向かって流体を流すことが可能な流路と、前記一端に配設されるとともに前記先端カバーの先端面に対して突出した位置に配置されるノズル開口とを有する筒状の芯部材と、前記芯部材の外側にあり、弾性変形可能でその形状を保持するように自己復元性を有し、前記先端カバーの前記第1係合部に係合され前記挿入部の内部の気密性及び水密性を確保するための第2係合部と、前記芯部材の他端に配設され、前記先端部本体の前記第1孔部に連結される筒状の連結部とを有する。
