MEDICAL DEVICE

• Main Authors: YOKOMIZO YUJI, YAMASHITA YASUNORI, ITO YOICHI
• Format: Patent
• Language: English; Japanese
• Published: 29.11.2018
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

PROBLEM TO BE SOLVED: To improve an insertion performance for a narrow section while maintaining a push-in performance for the narrow section in a medical device for acquiring a diagnostic image of a living body lumen.SOLUTION: A catheter 100 for image diagnosis includes a driving shaft 110 provided with an imaging part 115 capable of acquiring image information, a sheath part 120 provided with a lumen 125 for an image into which the driving shaft can be inserted, a guide wire insertion part 130 provided with a lumen 135 for a guide wire into which the guide wire 200 can be inserted, which is disposed on an external surface on the tip side of the sheath part, and a tip member 150, whose base end part 153 is disposed in the lumen for an image, and tip part 151 is disposed so as to protrude from the lumen for an image. The guide wire insertion part is disposed inclined toward a side of the lumen for an image of the sheath part, and the tip part of the tip member is inclined toward a guide wire insertion part side.SELECTED DRAWING: Figure 3 【課題】生体管腔の診断画像を取得するための医療用デバイスにおいて、狭窄部に対する押し込み性を維持しつつ、狭窄部に対する挿入性を向上させる。【解決手段】画像診断用カテーテル１００は、画像情報を取得可能な撮像部１１５が設けられた駆動シャフト１１０と、駆動シャフトが挿通可能な画像用ルーメン１２５を備えるシース部１２０と、ガイドワイヤ２００が挿通可能なガイドワイヤ用ルーメン１３５を備え、シース部の先端側の外表面に配置されたガイドワイヤ挿通部１３０と、基端部１５３が画像用ルーメンに配置され、先端部１５１が画像用ルーメンから突出するように配置された先端部材１５０と、を有しており、ガイドワイヤ挿通部は、シース部の画像用ルーメン側に向けて傾斜して配置されており、先端部材の先端部は、ガイドワイヤ挿通部側に向けて傾斜している。【選択図】図３