公开(公告)号：US12064574B2

公开(公告)日：2024-08-20

申请号：US17148799

申请日：2021-01-14

Applicant: OLYMPUS CORPORATION

Inventor： Takuo Endo ,  Tomofumi Katayama

IPC: A61M25/06 ,  A61B1/018 ,  A61B8/12 ,  A61B17/34 ,  A61F2/966 ,  A61M25/09 ,  A61M27/00

CPC classification number: A61M25/06 ,  A61B1/018 ,  A61B8/12 ,  A61B17/3403 ,  A61F2/966 ,  A61M25/09 ,  A61M27/002 ,  A61B2017/3413 ,  A61M2025/0681

Abstract: The present invention relates a puncture needle includes: a sheath having a longitudinal axis; a needle tube that is arranged inside the sheath to be moved along the longitudinal axis and that has a needle tip; and a protective tube that is arranged inside the needle tube to be moved along the longitudinal axis and that has a lumen into which a guide wire is inserted. The needle tube has a step portion formed at a position midway along the needle tube. The protective tube has a protrusion, which protrudes radially outward, on an outer peripheral surface thereof at a position midway nearer a proximal end side of the protective tube than the step portion is. A distal end of the protective tube is positioned at a position to protrude from the distal end of the needle tube when the protrusion abuts the step portion.

公开(公告)号：US11696672B2

公开(公告)日：2023-07-11

申请号：US16677776

申请日：2019-11-08

Applicant: Olympus Corporation

Inventor： Takuo Endo ,  Tomofumi Katayama

IPC: A61B1/00 ,  A61B1/018 ,  A61B17/34 ,  A61B8/12 ,  A61M25/09

CPC classification number: A61B1/00098 ,  A61B1/018 ,  A61B17/3478 ,  A61B8/12 ,  A61M25/09

Abstract: The disclosed technology is directed to a puncture needle access system for introducing guide wire into an interior of a tubular organ. The puncture needle access system includes an endoscope having an insertion portion. An endoscopic puncture needle is configured to be engaged with the insertion portion and includes an elongated tubular sheath having a lumen that extends in a longitudinal direction through the elongated tubular sheath. A tubular needle tube is inserted movably in the longitudinal direction into the lumen of the elongated tubular sheath. The tubular needle tube includes an inclined cutting-edge face formed at a distal end. The elongated tubular sheath includes an inclined surface oriented toward a distal end of the sheath so that the inclined surface comes closer to the elongated tubular sheath. The distal end of the sheath is located on a proximal end side of the sheath relative to a distal end of the inclined surface.

公开(公告)号：US20200069154A1

公开(公告)日：2020-03-05

申请号：US16677776

申请日：2019-11-08

Applicant: Olympus Corporation

Inventor： Takuo Endo ,  Tomofumi Katayama

IPC: A61B1/00 ,  A61B1/018 ,  A61B17/34

Abstract: The disclosed technology is directed to a puncture needle access system for introducing guide wire into an interior of a tubular organ. The puncture needle access system includes an endoscope having an insertion portion. An endoscopic puncture needle is configured to be engaged with the insertion portion and includes an elongated tubular sheath having a lumen that extends in a longitudinal direction through the elongated tubular sheath. A tubular needle tube is inserted movably in the longitudinal direction into the lumen of the elongated tubular sheath. The tubular needle tube includes an inclined cutting-edge face formed at a distal end. The elongated tubular sheath includes an inclined surface oriented toward a distal end of the sheath so that the inclined surface comes closer to the elongated tubular sheath. The distal end of the sheath is located on a proximal end side of the sheath relative to a distal end of the inclined surface.