Apparatus for ligating/suturing living tissues and system for resecting/suturing living tissues

A medical apparatus comprising:

• at least one projecting member;
• an introducing sheath configured to be introduced to a target portion in a state in which the projecting member is suspended, wherein the introducing sheath has a sharp distal end which is configured to pierce a living tissue;
• an extrusion member disposed inside the introducing sheath and at a proximal side of the at least one projecting member movable in an axial direction with respect to the introducing sheath;
• a cover sheath configured to be disposed outside the introducing sheath, the introducing sheath being movable between a first position and a second position with respect to the cover sheath;
• an introducing sheath manipulating section provided at a proximal side of the introducing sheath;
• an extrusion member manipulating section provided at a proximal side of the extrusion member, wherein the extrusion member manipulating section and the introducing sheath manipulating section are slidably and integrally provided with each other;
• a housing having a distal end and a proximal end configured for housing the introducing sheath manipulating section and the extrusion member manipulating section;
• and
• a release member slidably engaged with the cover sheath manipulating section and the introducing sheath manipulating section, wherein movement of the introducing sheath manipulating section toward the distal end of the housing will actuate the sharp distal tip of the introducing member for piercing the living tissue and release an integration between the extrusion member manipulating section and the introducing sheath manipulating section.