Abstract: An endoscopic treatment method includes: inserting an endoscope into a digestive tract; forming a damaged area in at least a portion of the digestive tract along a circumferential direction by performing cauterizing while keeping a mucosal layer by observing with the endoscope; and forming an incomplete stenosis in the digestive tract, while restoring the damaged area, wherein the damaged area is formed by causing damage to a mucosal base layer, the mucosal base layer having an interface that contacts a submucosal layer.

Abstract: An endoscopic system includes a processor. The processor generates from a measured value of pressure in a lumen of a subject a first temporal change image of the pressure in the lumen, generates an observation image for observing an opened/closed state of a valve portion in the lumen of the subject in real time from an image pickup signal obtained by picking up an image of the opened/closed state of the valve portion in the lumen in real time using an endoscope, and generates a superposition image by superposing the first temporal change image and the observation image in a temporally synchronized manner.

Abstract: Provided is an endoscopic surgical device includes: a sheath having a pipe for delivering a liquid and inserted into a channel of an endoscope; a pair of forceps components disposed so as to protrude from a distal end cover of the sheath; an operable member that is connected to the forceps components and opens and closes the forceps components; and a flow-path formation member positioned at proximal end side rather than the forceps components and is disposed in a rotatable manner about a central axis of the sheath together with the forceps components. The flow-path formation member includes a recess disposed in a direction orthogonal to an opening-closing direction of the forceps components and recessed radially inward. The recess forms a gap between the flow-path formation member and an inner peripheral surface of the distal end cover so as to constitute a liquid delivery hole.

Abstract: An endoscopic treatment method includes: inserting an endoscope into a digestive tract; forming a damaged area in at least a portion of the digestive tract along a circumferential direction by performing cauterizing while keeping a mucosal layer by observing with the endoscope; and forming an incomplete stenosis in the digestive tract, while restoring the damaged area, wherein the damaged area is formed by causing damage to a mucosal base layer, the mucosal base layer having an interface that contacts a submucosal layer.

Abstract: A method for treating reflux esophagitis includes orally inserting an endoscope into a digestive canal; an esophageal side opening forming an esophageal side opening in a mucosal layer in a part of an esophagus; a tunnel forming step of introducing the endoscope between the mucosal and a muscle layer from the esophageal side opening forming a tunnel; an abdominal cavity side opening passing from the tunnel to an abdominal cavity closer to an anus; a protrusion step of a distal end portion of the endoscope passing through the tunnel from the abdominal cavity side opening into the abdominal cavity; and a stenosis forming a wrap on a part of an outer circumference of the digestive canal near the diaphragm closer to the anus using a medical instrument inserted into a channel of the endoscope in the abdominal cavity to form a local stenosis inside the digestive canal forming a wrap.

Abstract: A method for diagnosing gastro esophageal reflux disease (GERD), comprising: introducing an endoscope into a stomach of a subject; measuring a pressure in the stomach while supplying gas into the stomach using the endoscope; and determining whether the subject has GERD or not based on a maximum value of the pressure and a wave pattern of a value of the pressure.

Abstract: In an endoscopic treatment method, a damaged area is formed in at least a portion of a digestive tract along a circumferential direction. The damaged area is formed by performing thermal ablation of mucosal layer and not removing the mucosal layer. An incomplete stenosis is formed in the digestive tract during restoration of the damaged area.

Abstract: In an endoscopic treatment method, a damaged area is formed in a digestive tract at least a portion in a circumferential direction of the digestive tract, the damaged area being formed by ablating mucosal layer while remaining the mucosal layer, and an incomplete stenosis is formed in the digestive tract, during performance of a process of restoration of the damaged area.

Abstract: A method for treating reflux esophagitis includes orally inserting an endoscope into a digestive canal; an esophageal side opening forming an esophageal side opening in a mucosal layer in a part of an esophagus; a tunnel forming step of introducing the endoscope between the mucosal and a muscle layer from the esophageal side opening forming a tunnel; an abdominal cavity side opening passing from the tunnel to an abdominal cavity closer to an anus; a protrusion step of a distal end portion of the endoscope passing through the tunnel from the abdominal cavity side opening into the abdominal cavity; and a stenosis forming a wrap on a part of an outer circumference of the digestive canal near the diaphragm closer to the anus using a medical instrument inserted into a channel of the endoscope in the abdominal cavity to form a local stenosis inside the digestive canal forming a wrap.

Abstract: Provided is an endoscopic surgical device includes: a sheath having a pipe for delivering a liquid and inserted into a channel of an endoscope; a pair of forceps components disposed so as to protrude from a distal end cover of the sheath; an operable member that is connected to the forceps components and opens and closes the forceps components; and a flow-path formation member positioned at proximal end side rather than the forceps components and is disposed in a rotatable manner about a central axis of the sheath together with the forceps components. The flow-path formation member includes a recess disposed in a direction orthogonal to an opening-closing direction of the forceps components and recessed radially inward. The recess forms a gap between the flow-path formation member and an inner peripheral surface of the distal end cover so as to constitute a liquid delivery hole.

Abstract: There is provided a method of treating gastroesophageal reflux disease, which includes dissecting one of a mucosal layer and a submucosal layer of at least one of an esophagogastric junction and a stomach in a range less than an entire circumference of a circumferential direction so that moderate stenosis occurs due to cicatrization in an area in which one of the mucosal layer and the submucosal layer is dissected.

Abstract: There is provided a method of treating gastroesophageal reflux disease, which includes dissecting one of a mucosal layer and a submucosal layer of at least one of an esophagogastric junction and a stomach in a range less than an entire circumference of a circumferential direction so that moderate stenosis occurs due to cicatrization in an area in which one of the mucosal layer and the submucosal layer is dissected.

Abstract: An endoscopic inspection method includes staining step and super magnified observation step. In the staining step, a distal end surface of a distal end portion of an endoscope which includes a distal end opening of a channel and a first lens that forms a super high-power observation optical system is held in contact with the tissue surface of the observation subject region such that the staining fluid supplied via the channel penetrates to the gap between the distal end surface and the tissue surface to eliminate the mucus on the tissue surface. The tissue surface having the mucus eliminated is stained with the staining fluid. In the super magnified observation step, the first lens which forms the super high-power observation optical system provided at the distal end portion is brought into contact with the tissue surface that has been stained with the staining fluid such that the observation at the cellular level is performed.

Abstract: An endoscopic inspection method includes staining step and super magnified observation step. In the staining step, a distal end surface of a distal end portion of an endoscope which includes a distal end opening of a channel and a first lens that forms a super high-power observation optical system is held in contact with the tissue surface of the observation subject region such that the staining fluid supplied via the channel penetrates to the gap between the distal end surface and the tissue surface to eliminate the mucus on the tissue surface. The tissue surface having the mucus eliminated is stained with the staining fluid. In the super magnified observation step, the first lens which forms the super high-power observation optical system provided at the distal end portion is brought into contact with the tissue surface that has been stained with the staining fluid such that the observation at the cellular level is performed.