Patent ID: 11896259
Assignee: TERUMO KABUSHIKI KAISHA
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. A medical device, the medical device comprising:
an outer tubular member made from one or more rigid materials having a first bend element and a second bend element, the second bend element being proximal to the first bend element in a natural state;
a drive shaft and a rotatable treatment member configured to be accommodated in the outer tubular member;
the treatment member on a distal end of the drive shaft, the treatment member configured to rotate and grind a substance inside a body lumen by rotating about a central axis, the treatment member including a distal-most end portion, a proximal end portion, and an intermediate portion positioned axially between the distal-most end portion and the proximal end portion, the distal-most end portion, the proximal end portion, and the intermediate portion being configured to be exposed from a distal end of the outer tubular member and to grind the substance inside the body lumen, and wherein the distal-most end portion includes a distally tapering portion and a proximally tapering portion, the proximally tapering portion being proximal of the distally tapering portion, and an intermediate portion of the distal-most end portion located between the distally tapering portion and the proximally tapering portion of the distal-most end portion; and
wherein a distal end surface of the treatment member is configured to be directed toward a central axis of a vessel.