| 主权项 |
1. A suction catheter comprising:
a catheter main body made of a flexible lengthy body with a lumen formed therein; a leading-end case portion positioned at a leading-end portion of the catheter main body and having an opening portion for retrieving an object; and object cutting means that is partially exposed through the opening portion of the leading-end case portion and is movable in an axial direction within the leading-end case portion, the suction catheter being adapted to be used in a treatment where a leading-end side of the catheter main body is inserted into a blood vessel together with the leading-end case portion, a base-end portion of the catheter main body is connected to a suction apparatus, and the lumen is vacuumed by means of the suction apparatus, so that the object cutting means is operated to cut an object, which sticks to an internal wall of the blood vessel, at the opening portion of the leading-end case portion, and also to suck and retrieve the object through the opening portion into the catheter main body, wherein the object cutting means includes
a cutting portion that includes a plurality of lines of cutting regions each extending in a substantially perpendicular direction to the axial direction and that has a resilience to restore changed intervals of adjacent ones of the cutting regions,a power receiving portion that is movable in the axial direction upon reception of power from the outside, anda power transmission rod that connects the cutting portion to the power receiving portion and that transmits the power received by the power receiving portion to the cutting portion, and the cutting portion has a first end connected to the power transmission rod on the leading-end side of the leading-end case portion, and a second end fixed to an internal wall surface of the leading-end case portion on a base-end side thereof. |
