| 摘要 |
A treatment instrument includes an insertion portion and a sample collection portion, wherein the sample collection portion includes a link portion and an advancing/retracting portion and when the advancing/retracting portion is located on a most proximal end side, the advancing/retracting portion and the link portion are connected in the axial direction and thereby become parallel to the insertion portion, when the advancing/retracting portion is located on a most distal end side, a part of the advancing/retracting portion and the link portion overlap and thereby become parallel to the insertion portion, and when the advancing/retracting portion is located between a proximal end portion side and a distal end portion side, the link portion is pushed out in a direction crossing the axial direction of the insertion portion by the advancing/retracting portion and thereby projects from the insertion portion. |
| 主权项 |
1. A treatment instrument comprising:
a rod-like insertion portion to be inserted into a subject; at least one sample collection portion arranged on a side face of the insertion portion; and an operation portion that operates the sample collection portion, wherein the sample collection portion includes, a link portion including an end supported on the insertion portion so that the end serves as a rotation axis and the other end is pivotable relative to the rotation axis; an advancing/retracting portion including an end joined to the other end of the link portion, the advancing/retracting portion advancing/retracting in an axial direction of the insertion portion, whereby the other end of the link portion pivots relative to the rotation axis, and a push rod arranged so that the push rod can advance/retract along the axial direction of the insertion portion, the push rod including an end joined to the other end of the advancing/retracting portion, and the other end joined to the operation portion; wherein when the advancing/retracting portion is located on a most proximal end side, the advancing/retracting portion and the link portion are connected in the axial direction and thereby become parallel to the insertion portion, and when the advancing/retracting portion is located on a most distal end side, a part of the advancing/retracting portion and the link portion overlap and thereby become parallel to the insertion portion; and wherein when the advancing/retracting portion is located between a proximal end portion side and a distal end portion side, the link portion is pushed out in a direction crossing the axial direction of the insertion portion by the advancing/retracting portion, and thereby projects from the insertion portion. |
