Olympus Corporation

National Cancer Center

Satoru Nonaka

Ichiro Oda

Takashi Nakamura

Seiichiro Abe

Chisato Karasawa

A medical stapler includes an attachment-detachment portion attached to a distal-end portion of an endoscope and including an opening from which an objective lens of the endoscope is exposed; and a grasping portion attached to the attachment-detachment portion and including a first grasping portion and a second grasping portion connected by a rotation shaft to be openable and closeable, wherein the second grasping portion includes a visual-field space penetrating a gap between the staple reception portion and the rotation shaft in an open-close direction, when the grasping portion is in the closed state, the staple extraction portion and the staple reception portion are opposite to each other, and when the grasping portion is in an open state, an optical axis of the objective lens passes through the visual-field space.

Medical stapler

A fastening device includes a shaft having a longitudinal axis, a fixing member configured to fix the shaft to an endoscope by being attached to the endoscope, a staple unit attached to a distal end of the shaft and rotatable around the longitudinal axis, an operation unit provided at a proximal-end portion of the shaft, and a rotation restriction mechanism configured to restrict rotation of the staple unit around the longitudinal axis with respect to the endoscope due to an operation of the operation unit.

Fastening device, endoscope system, and suturing method

A medical stapler includes an attachment-detachment portion that is attachable to and detachable from a distal-end portion of an endoscope; a grasping portion arranged at a distal-end side of the attachment-detachment portion and configured to grasp target tissue and suture the grasped target tissue; and an advancement-retraction mechanism configured to connect the grasping portion to the attachment-detachment portion such that the grasping portion is advanceable and retractable with respect to the attachment-detachment portion, wherein the advancement-retraction mechanism includes a wire sheath inserting through a penetration hole formed in the attachment-detachment portion, a distal end of the wire sheath is fixed to the grasping portion, and the grasping portion moves to the distal-end side by moving the wire sheath toward the distal-end side.

Medical stapler and suturing method

A suture method includes a first arrangement step of using a first treatment device including first/second grasping pieces to hook the first grasping piece to a first position of peripheral tissues of a lesion; a second arrangement step of hooking the second grasping piece to a second position of the peripheral tissues; a grasping step of grasping the first position and the second position while pressing the first position and the second position to the peripheral tissues; a retracting step of retracting the lesion site toward a proximal end side of the first treatment device while drawing the first position and the second position grasped by the first treatment device; and a suturing step of suturing a first suturing position at an external side of the first position and a second suturing position at an external side of the second position in the peripheral tissues.

Growing community of inventors

Tokyo, Japan

Satoru Nonaka