Sumitomo Bakelite Company Limited

Takuya Hayashi

Masao Ikeda

Etsuro Yamabe

Hideaki Matsunami

Hiroshi Utsugi

Wataru Otsuka

Tetsuro Abe

An endoscopic clip device including a clip, a treatment instrument body comprising a sheath, an operation wire, and a distal connection portion, a sleeve accommodated inside the sheath and accommodating the connection portion in distal portion of the wire such that portion of inner diameter of the sleeve is smaller than outer diameter of the locking portion when the connection portion is drawable from the accommodation portion. The sleeve has diameter enlargement portion on distal side of the sleeve and elastically self-openable, a diameter reduction step portion on proximal side of the enlargement portion, and a sleeve body positioned on the proximal side of the enlargement portion from the step portion and having radial rigidity higher than that of the enlargement portion, and the inner diameter of the sleeve body is smaller than the outer diameter of the locking portion when the connection portion is drawable from the accommodation portion.

Endoscopic clip device and clip

According to the present invention, there is provided a clip cartridge in which a clip having a structure enabling a user to easily perform a series of procedures can be easily and reliably mounted on a treatment instrument body. A clip cartridge () according to the present invention includes an inner case () that has a first accommodation region () for accommodating a clip (), and an outer case () that has an elongated insertion hole () into which a treatment instrument body () is inserted, and a second accommodation region () which accommodates the inner case () so as to be movable. The treatment instrument body () is inserted into the insertion hole (), and an operation wire is pressed forward so that a distal connection portion and a diameter enlargement portion of the sleeve protrude from the sheath to a distal side and enter the second accommodation region (), and so that a diameter enlargement portion is elastically enlarged in diameter. The operation wire is further pressed so as to bring a distal connection portion and the clip () into a mutually connected state. The operation wire is pulled so that the inner case () moves backward relative to the outer case () so as to press the sleeve backward, thereby drawing the diameter enlargement portion into the sheath while reducing the diameter enlargement portion in diameter.

Clip cartridge

Growing community of inventors

Akita, Japan

Takuya Hayashi