Patent ID: 11950836
Assignee: TERUMO KABUSHIKI KAISHA
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. The treatment method according to claim 11, further comprising:
delivering the expansion body in a contracted state to the atrial septum within a storage sheath; and
removing the expansion body with the contracted state from the storage sheath so as to expand the distal side expansion portion in the radial direction inside the left atrium and the proximal side holding portion in the radial direction inside the right atrium, to dispose the movable portion in the through-hole of the atrial septum and to hold the atrial septum from both sides of the through-hole by the recessed portion, while not expanding the movable portion to be larger than an outer diameter of the storage sheath so as not to substantially enlarge the through-hole.