| 摘要 |
A clamping and ligation device, comprising a ligation unit (10), a conveying unit (20), a protective sleeve (30), a connecting unit (40), a operation unit (50), and a traction unit (60); the connecting unit (40) connects the conveying unit (20) with the ligation unit (10), and can be disengaged to separate the conveying unit (20) from the ligation unit (10); the traction unit (60) controls the ligation unit (10) via push and pull movement; the end of the traction unit (60) connected to the ligation unit (10) is breakable, so that the traction unit (60) can be broken away from the ligation unit (10) under a definite force; the protective sleeve pipe (30) can accommodate the whole ligation unit (10) therein, thus, during endoscope penetration, avoiding the damage to the endoscope tube wall and the increase of penetration force. |
| 主权项 |
1. A clamping and ligation device, characterized by comprising: a ligation unit, which comprises a ligation component and an accommodation tube in which the ligation component is housed, the ligation unit being capable of remaining in a digestive tract of a living body for some time and then falling off automatically to be excreted from the living body, the ligation component comprising at least two clamping arms arranged symmetrically, the clamping arms being connected to each other at the bottom thereof to form a joint part of the ligation component; a conveying unit, which is connected to an end of the accommodation tube, the conveying unit comprising a flexible tube and a sleeve which is mounted on an end of the flexible tube, the sleeve being engaged with the accommodation tube to form a junction, where a wall of the sleeve overlaps a wall of the accommodation tube, each of the sleeve and the accommodation tube has a connection hole and the connecting holes are aligned at the junction; a protective sleeve, which surrounds the conveying unit and the ligation unit, the conveying unit and the ligation unit being moved lengthwise in the protective sleeve, and the ligation unit being accommodated completely in the protective sleeve; a connecting unit, which comprises at least a leg, which has a contact portion formed at the bottom thereof and a bent portion at the top thereof, the bent portion being inserted into the connection hole formed on the conveying unit and the accommodation tube, so as to connect the conveying unit and the accommodation tube together, and the bent portion being disengaged from the connection hole when the leg is subjected to a longitudinal force; an operation unit, which comprises a main body, an operation rod and an operation block controlling the movement of the operation rod, and a back end of the flexible tube being mounted on the main body of the operation unit; and a traction unit, running through and moving longitudinally in the conveying unit and the accommodation tube, one end of the traction unit being connected to the joint part of the ligation component, the other end being connected to the operation rod of the operation unit, and the traction unit controlling the movement of the ligation component by the operation block; the end of the traction unit which is connected to the joint part of the ligation component being detachable from the joint part, the traction unit comprising an abutment part; when the traction unit is pulled back, the abutment part is abutted against the contact portion of the connecting unit, and then the bent portion of the leg is disengaged from the connection hole under the pull force. |
