US 12,629,166 B2Granted

Medical device

AssigneeTerumo Kabushiki Kaisha

InventorYuichi Tada

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Abstract

A medical device for removing an object in a body cavity includes a rotatable drive shaft having a lumen, a cutter at a distal portion of the shaft and by which the object is cut, a first rotation connection portion at a proximal portion of the shaft and by which a rotational force is transmitted to the shaft, a first fluid connection portion at the proximal portion and through which the object is removed with a fluid, and a handle including a second rotation connection portion connectable to the first rotation connection portion, a second fluid connection portion connectable to the first fluid connection portion, a rotation driving source connected to the second rotation connection portion and generating the rotational force, and a fluid driving source moving the fluid from the distal to proximal portions of the shaft via the first and second fluid connection portions.

Claims20

Dependent claims

A medical device for removing an object in a body cavity, comprising:

a rotatable drive shaft having a lumen;
a cutter disposed at a distal portion of the drive shaft and by which the object is cut;
a first rotation connection portion at a proximal portion of the drive shaft and by which a rotational force is transmitted to the drive shaft;
a first fluid connection portion at the proximal portion of the drive shaft and through which the object that has been moved with a fluid through the lumen is removed;
and
a handle including:
a second rotation connection portion, a distal end of which is connectable to a proximal end of the first rotation connection portion in a first direction parallel to a rotation axis of the drive shaft,
a second fluid connection portion, a distal end of which is connectable to a proximal end of the first fluid connection portion in the first direction,
a rotation driving source connected to the second rotation connection portion and configured to generate the rotational force, and
a fluid driving source configured to move the fluid from the distal portion to the proximal portion of the drive shaft via the first and second fluid connection portions.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/860,017Filed 7 Jul 2022 · continuation
Priority: 30 Mar 2020
Published: US 2022/0346820 A13 Nov 2022
Granted: 19 May 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61B 17/32002
Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes: with continuously rotating, oscillating or reciprocating cutting instruments
A61B 17/320758
Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions: with a rotating cutting…
A61B 2017/00469
With a releasable handle; with handle and operating part separable: for insertion of instruments, e.g. guide wire, optical fibre
A61B 2017/22041
With a guide wire: outside the catheter