Ligation device and clip unit used therein

摘要

Each of the clip units 13 includes a clip body 35 having a pair of arm parts 41 that can ligate the biological tissue and a fastening ring 37 that accommodates the clip body 35, and the plurality of clip units 13 are disposed in series within the distal end of the outer sheath member 19. Each of the fastening rings 37 includes a connecting mechanism 85 consisted by a locking member 87 that connects the adjacent fastening rings 37 each other and a fitting support 101, the manipulation wire 23 engaged with the locking member 87 is pulled to release the connection of the fastening rings 37 by the connecting mechanism 87.

主权项

1. A ligation device for ligating a biological tissue, comprising:
a flexible tube-shaped outer sheath member; a tube-shaped inner sheath member provided within the outer sheath member to be freely reciprocated; a manipulation wire provided within the sheath member to be freely reciprocated; and a plurality of clip units disposed in series within the distal end of the outer sheath member, wherein each of the clip units includes a clip body that ligates the biological tissue using a pair of arm parts biased to be largely opened each other and a base end section that connects the base ends of the arm parts, and a plurality of fastening rings each of which is configured to close the pair of arm parts by inserting the base end section of the clip body within a cylindrical body of each fastening ring, wherein a fastening ring of the plurality of fastening rings includes:
a connecting unit to connect adjacent fastening rings to each other; anda disconnection unit to engage with the manipulation wire and deforms the connecting unit by the pull of the manipulation wire, thereby releasing the connection of the fastening rings.