公开(公告)号：US20220304747A1

公开(公告)日：2022-09-29

申请号：US17839702

申请日：2022-06-14

Applicant: OLYMPUS CORPORATION

Inventor： Yasuo MIYANO ,  Yoshinori HIGUCHI ,  Kenji MURAKAMI ,  Shohei KAMADA ,  Yoshitaka KAMIYA ,  Masayoshi SAITO

IPC: A61B18/14

Abstract: Provided is a high-frequency treatment tool including: a sheath having an inner hole that passes therethrough in a longitudinal direction; a first electrode portion that is formed in a rod shape, that passes through the inner hole of the sheath to protrude from a distal end of the sheath, and that is configured to apply a high-frequency current; a second electrode portion that is disposed at a position at which the second electrode portion is electrically connected with the first electrode portion; and a power source that uses the first electrode portion as a negative electrode, that uses the second electrode portion as a positive electrode, and that supply a current between the first electrode portion and the second electrode portion so that a state in which attached matter attached to the first electrode portion is lifted from the first electrode portion due to osmosis is created.

公开(公告)号：US20240050077A1

公开(公告)日：2024-02-15

申请号：US18383932

申请日：2023-10-26

Applicant: OLYMPUS CORPORATION

Inventor： Shoichiro KAWAYOKE ,  Shohei KAMADA

IPC: A61B10/04 ,  A61B10/02

CPC classification number: A61B10/04 ,  A61B10/0266 ,  A61B2010/045

Abstract: A biopsy device includes: a hollow needle; a wire located inside the needle and having a helical drill portion; a rotation mechanism moving the drill portion; a sheath covering the needle, the needle and the wire being movable in a longitudinal direction of the needle with respect to the sheath; and an operating unit on a proximal side of the needle, the wire, and the sheath. The unit includes: a main body fixed to a proximal end of the sheath; and a knob fixed to a proximal end of the wire and supported by the main body so as to be movable in the longitudinal direction and rotatable about a longitudinal axis of the wire. The mechanism includes: a threaded portion, on the main body, having a pitch equal to a pitch of the drill portion; and a joint portion, on the knob, joined to the threaded portion.