Abstract: Provided is a medical device capable of easily changing a position of the device inside a biological lumen and effectively removing a cut object. The medical device for removing the object in the biological lumen has a drive shaft, a cutting portion, a first housing that accommodates the drive shaft to be rotatable, a second housing that is rotatable with respect to the first housing, and a support portion that supports the first housing and the second housing. The second housing and the support portion relatively move along an axis to restrict relative rotation of the first housing and the second housing. The support portion supports the second housing to be rotatable around the axis.

Abstract: A medical device includes: an elongated shaft portion that includes a drive shaft which is rotatable and a fluid lumen; and a cutter that cuts an object, the cutter being fixed to a distal end of the drive shaft and including a lumen communicating with the fluid lumen and a distal end opening communicating with the lumen, wherein the cutter has at least one guide portion that is a groove and/or a slit on an outer peripheral surface, and the guide portion extends in a direction opposite to a rotation direction in a distal direction.

Abstract: A catheter for removing an object in a body lumen includes a rotatable drive shaft including a spiral portion having a spiral shape near a distal end of the drive shaft, an outer tube surrounding the drive shaft, a cutting member connected to the distal end of the drive shaft to be rotated by the drive shaft with respect to a rotation axis and by which the object is cut, a guide wire tube attached to a distal portion of the outer tube, extending substantially straight along a center spiral axis of the spiral portion, and having a first guide wire lumen, and a distal tip attached to a distal end of the guide wire tube and having a second guide wire lumen extending parallel to the rotation axis and communicating with the first guide wire lumen.

Abstract: A catheter for removing an object in a body lumen includes an outer tube, a drive shaft surrounded by the tube, a cutting member connected to a distal end of the shaft to be rotated by the shaft with respect to a rotation axis and by which the object is cut, a guide wire tube attached to a distal end of the outer tube and having a first lumen extending adjacent to the cutting member along the axis, and a distal tip attached to a distal end of the guide wire tube and having a second lumen extending parallel to the rotation axis and communicating with the first lumen. The drive shaft includes a curved portion near the distal end thereof to cause the tip to contact a first inner surface of the body lumen when the curved portion contacts an opposite second inner surface of the body lumen.

Abstract: A catheter for removing an object in a body lumen includes an outer tube, a shaft surrounded by the tube, a cutting member connected to the shaft to be rotated with respect to a rotation axis, a guide wire tube attached to the outer tube and having a first lumen for a guide wire and second lumens, a metal member attached to the wire tube, a part of the metal member surrounded by the member, a distal tip attached to the wire tube and having a third lumen communicating with the first lumen, and a pusher extending along the shaft, connectable to the distal tip or the metal member, and including wires that can pass through the second lumens. The pusher causes the cutting member to move toward a first surface of the body lumen when contacting an opposite second surface of the body lumen.

Abstract: A medical device is disclosed that can help prevent a guide wire from coming into contact with a rotating body in the middle of performing a treatment and achieves improvement in the efficiency of cutting an object by the rotating body. The medical device has a sheath that is insertable into a body lumen, a rotatable hollow rotating body that is disposed to protrude toward a distal side of the sheath, and guide wire lumens into which a guide wire w is insertable in parallel with the sheath. A distal surface of the rotating body has corrugated portions.

Abstract: Provided is a medical device capable of easily changing a position of the device inside a biological lumen and effectively removing a cut object. The medical device for removing the object in the biological lumen has a drive shaft, a cutting portion, a first housing that accommodates the drive shaft to be rotatable, a second housing that is rotatable with respect to the first housing, and a support portion that supports the first housing and the second housing. The second housing and the support portion relatively move along an axis to restrict relative rotation of the first housing and the second housing. The support portion supports the second housing to be rotatable around the axis, and restricts a relative movement and a relative inclination of the second housing and the support portion in a direction intersecting with the axis.

Abstract: A medical device exhibits an improved ability to discriminate the nature of a discharging flow. The medical device that discharges an object from a biological body lumen includes a shaft that extends from a proximal side toward a distal side and includes a discharge lumen through which the object can pass to the proximal side, a discharge passage in communication with a proximal portion of the discharge lumen, and a mixing unit capable of supplying fluid to the discharge passage.

Abstract: A medical system for removing an object in a body cavity, includes a display, and a controller connectable to a drive device configured to control a medical device operated by an operator to remove the object. The controller is configured to acquire device information indicating features of different types of first devices connectable to the medical device, acquire target information indicating characteristics of a target object to be removed, rank the first devices for removing the target object using the device information and the target information, and display on the display a list of the first devices according to the rank thereof.

Abstract: A medical system includes a device for removing an object in a body cavity, the device including a shaft portion including a rotatable drive shaft and a lumen, a motor configured to rotate the drive shaft, a cutter attached to a distal end of the drive shaft and configured to cut the object when the drive shaft is rotated by the motor, and a pump operable according to one or more parameters to create a vacuum in the lumen to transport the cut object through the lumen. The system further includes one or more sensors each configured to detect a physical quantity related to the cut object transported through the lumen, and a controller configured to determine the parameters based on the physical quantity detected by each of the sensors, and control the pump to create the vacuum in the lumen according to the determined parameters.

Abstract: A medical system includes a device including a drive shaft, a cutter for cutting an object within a cutting range, a tube surrounding the shaft and including a contrast marker, and rollers for rotating and moving the pipe, a memory storing information including cross-sectional images of the cavity, an imaging device capturing images of the marker, and a controller determining, based on the information, a target position of the cutter and a target orientation of the marker in an image to be captured when the object is within the range, determining a current position of the cutter based on a captured image and moving the pipe such that the cutter reaches the target position, and determining an orientation of the marker in a captured image and rotating the pipe such that the marker in the image has the target orientation.

Abstract: A medical system includes a device for removing an object in a body cavity, the device including a shaft portion including a rotatable drive shaft, a motor configured to rotate the drive shaft, and a cutter attached to a distal end of the drive shaft and configured to perform a cutting operation on the object when the drive shaft is rotated by the motor. The medical system further includes one or more sensors each configured to detect a physical quantity related to the cutting operation, and a controller configured to determine one or more cutting parameters for the cutting operation based on the physical quantity detected by each of the sensors, and control the motor to rotate the drive shaft according to the determined cutting parameters.

Abstract: A medical device for removing an object in a body cavity, includes a rotatable drive shaft, a cutter attached to a distal end portion of the drive shaft and by which the object is cut, and one or more first sensors disposed on a distal side of the cutter, wherein each of the first sensors is configured to detect contact with the object or a biological tissue and output a signal indicating whether the first sensor is contacting the object or the biological tissue.

Abstract: A medical device control apparatus for controlling a medical device configured to remove an object in a body cavity with a cutter that is rotatable via a rotatable drive shaft, includes a first motor configured to rotate the drive shaft, one or more sensors configured to detect a state of the first motor, and a controller configured to control the first motor to rotate the drive shaft based on the state of the first motor detected by the one or more sensors.

Abstract: A system for monitoring a health status of a person remotely from a medical facility, includes a display device to be installed in the medical facility, a wireless sensor device attachable to a leg of the person to acquire measurement information on a state of the leg of the person, and a compute server in wireless communication with the sensor device to acquire the measurement information. The compute server is configured to determine a risk of an arterial disease and a venous disease of the leg based on the acquired measurement information, and output, to the display device, information on the determined risk of the arterial disease and the venous disease of the leg.

Abstract: A medical device for removing an object in a body cavity, includes a rotatable drive shaft, a cutter attached to a distal end of the drive shaft and by which the object is cut, a guide wire including one or more markers, a guide tube disposed at a distal portion of the drive shaft and including a lumen through which the guide wire can pass and a sensor configured to detect the one or more markers, and a controller configured to control an operation state of the cutter to be an operation disabled state in which the cutter cannot operate and an operation enabled state in which the cutter can operate, and to switch between the operation disabled state and the operation enabled state according to the one or more markers detected by the sensor.

Abstract: A medical device for removing an object in a body cavity, includes a first device including a rotatable drive shaft and a cutter attached to a distal end of the drive shaft and by which the object is cut, a second device movable with respect to the drive shaft along a longitudinal direction of the drive shaft and including a distal-side blood pressure sensor at a distal portion of the second device and a proximal-side blood pressure sensor on a proximal side of the distal-side blood pressure sensor, and a controller configured to acquire a first measurement value from the distal-side blood pressure sensor and a second measurement value from the proximal-side blood pressure sensor, calculate a fractional flow reserve using the first and second measurement values, and control the cutter to cut the object in accordance with the calculated fractional flow reserve.

Abstract: A system for monitoring a health status of a person, includes a mobile terminal configured to display the status and in wireless communication with a first sensor attached to one leg of the person to acquire first information relating to a state of the one leg, and a second sensor attached to a part of a body of the person other than said one leg to acquire second information relating to a state of the part, and a server in communication with the terminal to acquire the first and second information from the sensors. The server is configured to compare the first and second information and determine a blood vessel state of said one leg based on its difference, and transmit to the terminal information indicating the blood vessel state. The mobile terminal is configured to update the status based on the information.

Abstract: A medical device for removing an intravascular thrombus includes: a rotatable tubular driving shaft in which a spiral-shaped carrier is provided on an inner surface thereof; a cutting part that is provided on a distal side of the driving shaft and cuts the thrombus; and an elongated resistive body that is disposed in a lumen of the driving shaft and can be rotated relative to the driving shaft.

Abstract: A medical device for removing an intravascular thrombus includes: a rotatable tubular driving shaft in which a spiral-shaped carrier is provided on an inner surface thereof; a cutting part that is provided on a distal side of the driving shaft and cuts the thrombus; and an elongated resistive body that is disposed in a lumen of the driving shaft and can be rotated relative to the driving shaft.