Abstract: The present invention provides a sheath for gastrostoma (1), a sheathed dilator, a gastrostomy catheter kit and a method of splitting a sheath for gastrostoma. The sheath for gastrostoma (1) includes a sheath body (11) in which a gastrostomy catheter (2) is inserted and a handle (12). The sheath for gastrostoma (1) lowers the insertion resistance of a gastrostomy catheter when inserted in a fistula before insertion of the gastrostomy catheter in the fistula for replacement in the patient's body. According to the invention, a sheath for gastrostoma, a sheathed dilator, a sheath for gastrostoma with insertion aid, a gastrostomy catheter kit and a method of splitting a sheath for gastrostoma which can lower the insertion resistance during placement of a catheter in the patient's body, facilitate air supply control of an endoscope and stabilize endoscopic visual field during surgery are provided.

Abstract: The present invention provides a sheath for gastrostoma (1), a sheathed dilator, a gastrostomy catheter kit and a method of splitting a sheath for gastrostoma. The sheath for gastrostoma (1) includes a sheath body (11) in which a gastrostomy catheter (2) is inserted and a handle (12). The sheath for gastrostoma (1) lowers the insertion resistance of a gastrostomy catheter when inserted in a fistula before insertion of the gastrostomy catheter in the fistula for replacement in the patient's body. According to the invention, a sheath for gastrostoma, a sheathed dilator, a sheath for gastrostoma with insertion aid, a gastrostomy catheter kit and a method of splitting a sheath for gastrostoma which can lower the insertion resistance during placement of a catheter in the patient's body, facilitate air supply control of an endoscope and stabilize endoscopic visual field during surgery are provided.

Abstract: The present invention provides a sheath for gastrostoma (1), a sheathed dilator, a gastrostomy catheter kit and a method of splitting a sheath for gastrostoma. The sheath for gastrostoma (1) includes a sheath body (11) in which a gastrostomy catheter (2) is inserted and a handle (12). The sheath for gastrostoma (1) lowers the insertion resistance of a gastrostomy catheter when inserted in a fistula before insertion of the gastrostomy catheter in the fistula for replacement in the patient's body. According to the invention, a sheath for gastrostoma, a sheathed dilator, a sheath for gastrostoma with insertion aid, a gastrostomy catheter kit and a method of splitting a sheath for gastrostoma which can lower the insertion resistance during placement of a catheter in the patient's body, facilitate air supply control of an endoscope and stabilize endoscopic visual field during surgery are provided.

Abstract: A biochemical container is provided, which can open a cover member shutting a container member and can release a tightly sealed condition, without a need for displacing the outer edge section of the cover member. In the present invention, an opening in an end of a container member 110 is openably and closably shut by a cover member 120. When an assisting-opening member 140 is pressed from the outside in such shut condition, the stress is changed to the opening direction by the changing-direction mechanism 150 to exert over the cover member 120. Consequently, the tightly sealed condition of the cover member 120 that shuts the container member 110 can be released.