Search International and National Patent Collections

1. (WO2018181521) MEDICAL DEVICE AND TREATMENT METHOD

Pub. No.:    WO/2018/181521    International Application No.:    PCT/JP2018/012851
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Mar 29 01:59:59 CEST 2018
IPC: A61B 17/3205
Applicants: TERUMO KABUSHIKI KAISHA
テルモ株式会社
Inventors: NISHIO, Kousuke
西尾広介
HATTA, Tomonori
八田知紀
Title: MEDICAL DEVICE AND TREATMENT METHOD
Abstract:
Provided is a medical device and a treatment method that are capable of effectively cutting intraluminal matter in a living organism, and are capable of improving safety by reducing damage to living organic tissue. A medical device (10) for cutting intraluminal matter in a living organism, wherein a structural body (20) that is rotated by a drive shaft (30) has a first cutting part (21), a second cutting part (22) further on the proximal side than the first cutting part (21), a first non-cutting part (23) between the first cutting part (21) and the second cutting part (22), and a second non-cutting part (24) on the proximal side of the second cutting part (22), and wherein formulae (A) to (E) are satisfied, where a is the maximum radius of the first cutting part (21), b is the maximum radius of the second cutting part (22), c is the maximum radius of the first non-cutting part (23), d is the maximum radius of the second non-cutting part (24), L1 is the axial length of the first non-cutting part (23), and L2 is the axial length of the second cutting part (22). a < b . . . Formula (A) c < d . . . Formula (B) d ≤ b . . . Formula (C) a < d . . . Formula (D) L1 < L2 . . Formula (E)