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

Claim 19:
20. A medical device, the medical device comprising:
an outer tubular member made from one or more rigid materials having a first bend element including a distal end portion of the outer tubular member and a second bend element, the second bend element being proximal to the first bend element in a natural state;
a drive shaft configured to be accommodated in the outer tubular member;
a rotatable treatment member on a distal end of the drive shaft, the treatment member configured to rotate and grind a substance inside a body lumen, 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, and wherein the distal-most end portion includes a distally tapering portion and a proximally tapering portion proximal of the distally tapering portion, the distally tapering portion tapers toward a distal-most end of the treatment member, the proximally tapering portion tapers toward the proximal end portion, and the intermediate portion tapers toward the distal-most end of the treatment member from a proximal-most end of the intermediate portion to a distal-most end of the intermediate portion; and
a bearing between the outer tubular member and the drive shaft, the bearing being positioned distal to the first bend element.