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US 2023/0404367 A1Published application
Access route formation method for bile duct, endoscope treatment tool, and access route formation system
AssigneeOlympus Medical Systems Corp.
InventorsYutaka YANUMA, Tomohiko Mamiya
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Abstract
An access route formation method for a bile duct includes: inserting a treatment tool into a duodenum as a target; deforming a tissue of a duodenal papilla by pressing the treatment tool against the duodenal papilla; observing a deformed tissue; and forming an opening in the bile duct located below the deformed tissue by incising the deformed tissue or puncturing the deformed tissue in a state in which the treatment tool is pressed against the deformed tissue.
Claims16
An access route formation method for a bile duct comprising:
- inserting a treatment tool into a duodenum as a target;
- deforming a tissue of a duodenal papilla by pressing the treatment tool against the duodenal papilla;
- observing a deformed tissue;
- and
- forming an opening in the bile duct located below the deformed tissue by incising the deformed tissue or puncturing the deformed tissue in a state in which the treatment tool is pressed against the deformed tissue.
2 more elements
An endoscope treatment tool comprising:
- a sheath having a longitudinal axis;
- a pressing member attached to the sheath and partially located in front of a distal end of the sheath;
- a treatment portion inserted into the sheath and configured to advance and retract with respect to the sheath;
- and
- an operation portion connected to the sheath and configured to move the treatment portion between a position in front of a distal end of the pressing member and a position backward of the distal end of the pressing member,
- wherein the endoscope treatment tool is configured to visually recognize a deformed tissue deformed by contacting the pressing member from behind.
3 more elements
Dependencies are inferred from the claim text.