Abstract: Disclosed is an operation method of an endoscope, the method comprising: a sheath insertion step of percutaneously inserting at least one sheath in a pericardial cavity of a heart; an insertion step of inserting a rigid scope in the sheath; a view field securing step for securing the view field for a surgical site within the pericardial cavity; a guide step for guiding the rigid scope to the surgical site; and an observation step of observing the surgical site with the rigid scope.

Abstract: It is an object to provide an endoscopic heart surgery method with which it is possible to observe an endoscopic image with a stable field of view in the pericardial space. Provided is an endoscopic heart surgery method including an inserting step of inserting an inserted portion of an endoscope into a body from the subxiphoid area and inserting the inserted portion into the pericardial space by penetrating the pericardium in the vicinity of the heart apex; a moving step of advancing the inserted portion toward the base of the heart so that the inserted portion passes through the roof of the pericardial space and is moved toward the heart apex to a treated area in the pericardial space; and an observing step of observing the treated area with the endoscope.

Abstract: Disclosed is an operation method of an endoscope, the method comprising: a sheath insertion step of percutaneously inserting at least one sheath in a pericardial cavity of a heart; an insertion step of inserting a rigid scope in the sheath; a view field securing step for securing the view field for a surgical site within the pericardial cavity; a guide step for guiding the rigid scope to the surgical site; and an observation step of observing the surgical site with the rigid scope.

Abstract: Therapeutic solution of an amount corresponding to a plurality of injections is injected with the distal end kept inserted in the pericardial cavity via an access port formed to penetrate under the xiphoid process. Provided is a therapeutic-solution injecting device (1) including an injection needle (3) for puncturing living tissue; a tube (6) having the injection needle (3) at a distal end thereof; a syringe connector (5) provided at a proximal end of the tube (6) and allowing connection and disconnection of a therapeutic-solution syringe (4) containing therapeutic solution; and a three-way valve (8) provided in the tube (6) between the syringe connector (5) and the injection needle (3) and having an open end.

Abstract: It is an object to provide an endoscopic heart surgery method with which it is possible to observe an endoscopic image with a stable field of view in the pericardial space. Provided is an endoscopic heart surgery method including an inserting step of inserting an inserted portion of an endoscope into a body from the subxiphoid area and inserting the inserted portion into the pericardial space by penetrating the pericardium in the vicinity of the heart apex; a moving step of advancing the inserted portion toward the base of the heart so that the inserted portion passes through the vicinity of the roof of the pericardial space and is moved toward the heart apex to a treated area in the pericardial space; and an observing step of observing the treated area with the endoscope.

Abstract: It is an object to provide an endoscopic heart surgery method with which it is possible to observe an endoscopic image with a stable field of view in the pericardial space. Provided is an endoscopic heart surgery method including an inserting step of inserting an inserted portion of an endoscope into a body from the subxiphoid area and inserting the inserted portion into the pericardial space by penetrating the pericardium in the vicinity of the heart apex; a moving step of advancing the inserted portion toward the base of the heart so that the inserted portion passes through the roof of the pericardial space and is moved toward the heart apex to a treated area in the pericardial space; and an observing step of observing the treated area with the endoscope.