Medical device
AssigneeTerumo Kabushiki Kaisha
InventorsJunichi Kobayashi, Yuichi Tada
Life of this patent
Estimating the term…
Abstract
A medical device for removing an object in a body cavity, includes 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 drive shaft driving source configured to rotate the drive shaft, a fluid driving source configured to move a fluid from a distal side to a proximal side of the lumen, a switch, and a controller configured to, in response to the switch being turned on, control the fluid driving source to begin moving the fluid, and control the drive shaft driving source to begin rotating the drive shaft a first predetermined period after the switch is turned on.
Claims18
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 drive shaft driving source configured to rotate the drive shaft;
- a fluid driving source configured to move a fluid from a distal side to a proximal side of the lumen;
- a first sensor configured to measure a flow rate of the fluid in the lumen;
- a switch;
- and
- a controller configured to:
- in response to the switch being turned on, control the fluid driving source to begin moving the fluid, and
- control the drive shaft driving source to begin rotating the drive shaft at least a first predetermined amount of time after the switch is turned on and after the flow rate measured by the first sensor has reached a set value.
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 drive shaft driving source configured to rotate the drive shaft;
- a fluid driving source configured to move a fluid from a distal side to a proximal side of the lumen;
- a first switch for turning on and off the drive shaft driving source;
- a second switch for turning on and off the fluid driving source;
- and
- a controller configured to control the drive shaft driving source to begin rotating the drive shaft a first predetermined amount of time after the second switch is turned on even when the first switch is turned on first.
A method performed by a medical device for removing an object in a body cavity, the medical device including:
- 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 drive shaft driving source configured to rotate the drive shaft,
- a fluid driving source configured to move a fluid from a distal side to a proximal side of the lumen, and
- a switch, the method comprising:
- in response to the switch being turned on, controlling the fluid driving source to begin moving the fluid,
- measuring a flow rate of the fluid in the lumen, and
- controlling the drive shaft driving source to begin rotating the drive shaft at least a first predetermined amount of time after the switch is turned on and after the measured flow rate has reached a set value.
Dependencies are inferred from the claim text.