US 12,220,147 B2
Medical device having rotating shaft with lumen and sealing structure
Mizuho Shiraishi, Sagamihara (JP); Yuichi Tada, Tokyo (JP); and Akihiro Takahashi, Matsuda (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 15, 2023, as Appl. No. 18/541,438.
Application 18/541,438 is a continuation of application No. 17/023,553, filed on Sep. 17, 2020, granted, now 11,877,768.
Application 17/023,553 is a continuation of application No. PCT/JP2019/012689, filed on Mar. 26, 2019.
Claims priority of application No. 2018-064011 (JP), filed on Mar. 29, 2018.
Prior Publication US 2024/0108379 A1, Apr. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/22 (2006.01); A61B 17/32 (2006.01); A61B 17/3207 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/320758 (2013.01) [A61B 17/32002 (2013.01); A61B 2017/22078 (2013.01); A61B 2017/320032 (2013.01); A61B 2017/320775 (2013.01); A61B 90/02 (2016.02); A61B 2090/034 (2016.02); A61B 2090/035 (2016.02); A61B 2217/005 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A medical device for removing an object inside a biological lumen, comprising:
a drive shaft that is rotatable about a rotation axis;
a cutting portion fixed to a distal portion of the drive shaft and configured to cut the object;
a first housing that accommodates the drive shaft to be rotatable relative to the first housing;
a second housing located on a distal side of the first housing and rotatable with respect to the first housing around the rotation axis, wherein the drive shaft is rotatable relative to the second housing; and
a support portion that supports the first housing and the second housing, wherein the drive shaft is rotatable relative to the support portion,
wherein one of the first housing, the second housing, and the support portion has a recess portion, and an other one of the first housing, the second housing, and the support portion has a projection portion fittable into and detachable from the recess portion by relatively moving along the rotation axis,
wherein the projection portion and the recess portion are configured to be fitted together to restrict relative rotation of the first housing and the second housing,
wherein the support portion supports at least one of the first housing and the second housing to be rotatable around the rotation axis.