| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for retrieving or removing stone(s)(e.g., calculus) from a human body.SOLUTION: A device 150 for retrieving calculus in a lumen of a living body includes an elongated member 152 positionable in the living body lumen and including an inlet, an outlet, and a retrieval space between the inlet and the outlet, and a sealing member 164 which is movably positioned in the lumen of the elongated member and axially moves in distal and proximal directions and makes sealing contact with the inner surface of the limen in the elongated member. A plunger 68 is connected to the sealing member. The calculus retrieving device includes two parts 176, 178 that are separated from one another to form a divided sealing member when the plunger is moved in the distal direction and directly contact one another to form an integrated sealing member when the plunger is moved in the proximal direction to draw fluid and the calculus into the retrieval space.SELECTED DRAWING: Figure 3A |
