| 摘要 |
The present invention is directed to A clip delivery apparatus, comprising a flexible member sized for insertion through a working channel of an endoscope to a target site within a body and a capsule releasably coupled to a distal end of the flexible member, in combination with a clip, a proximal end of which is received within the capsule and a tension member extending through the flexible member to a proximal end of the clip, a binding member coupling the tension member to the clip, a connection between the binding member and the tension member yielding when subject to a predetermined load and a constraint member maintaining the clip in an unlocked configuration, the constraint member being coupled to the tension member and releasably connected to the clip so that, when the connection between the binding member and the tension member yields, the constraint member releases from the clip allowing the clip to move to a locked configuration in which the clip is locked closed, a bushing releasably connecting a distal end of the flexible member and the capsule, and an interlock tube in an interference fit between the capsule and the bushing, wherein the tension member includes an abutting surface which, after the connection between the tension member and the binding member yields, pushes the interlock tube into the bushing separating the capsule from the bushing. |
