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1. (WO2018079508) MEDICAL DEVICE AND TREATMENT METHOD

Pub. No.:    WO/2018/079508    International Application No.:    PCT/JP2017/038246
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Wed Oct 25 01:59:59 CEST 2017
IPC: A61B 17/34
Applicants: TERUMO KABUSHIKI KAISHA
テルモ株式会社
Inventors: TAKAHASHI, Yuusuke
高橋侑右
Title: MEDICAL DEVICE AND TREATMENT METHOD
Abstract:
Provided are a medical device and a treatment method, which are capable of improving safety by inhibiting erroneous puncturing and enable efficient expansion of a formed hole. A medical device (1) for forming a hole in the fossa ovalis (O) inside a living body and expanding said hole, said device comprising a needle part (30) to which a sharp puncture part (31) is provided at the distal end thereof, a protective tube (60) that slidably houses the puncture part (31), and a first biasing part (90) that moves the protective tube (60) in the distal direction with respect to the puncture part (31), wherein when the puncture part (31) forms a hole in the fossa ovalis (O), the protective tube (60) can move toward the distal side by the biasing force from the first biasing part (90) so as to expand the hole formed in the fossa ovalis (O) by the puncture part (31) and house the puncture part (31).