Patent application number | Description | Published |
20140277014 | ROTATIONAL ATHERECTOMY DEVICE WITH BIASING CLUTCH - A rotational atherectomy system may include a drive shaft, a motor, and a clutch with a threshold torque where the clutch may include a motor plate rotationally connected to the motor, a drive shaft plate rotationally connected to the drive shaft, and a biasing clutch configured to rotationally engage the motor plate and the drive shaft plate, wherein torques less than the threshold torque are transmitted completely between the motor plate and the drive shaft plate, which remain rotationally coupled by static friction, and wherein torques greater than the threshold torque cause the motor plate and the drive shaft plate to rotate relative to one another and cause a residual torque to be transmitted between the motor and the drive shaft, the residual torque being less than the threshold torque and being determined by a kinetic coefficient of friction. | 09-18-2014 |
20140316447 | DEVICES, SYSTEMS AND METHODS FOR A PILOTING TIP BUSHING FOR ROTATIONAL ATHERECTOMY - A high-speed rotational atherectomy device for opening a stenosis in an artery having a given diameter, comprising: a guide wire; a flexible elongated, rotatable drive shaft advanceable over the guide wire, the drive shaft having a proximal end and a distal end; an abrading head; and a piloting member fixedly attached to the drive shaft and disposed distally of the abrading head. When the piloting member is advanced to a stenosis, the piloting member creates a piloting hole when the drive shaft at a sufficient rotational speed. The eccentric abrading head is then advanced through the piloting hole and distally across the stenotic lesion, thereby opening the stenotic lesion to a diameter larger than the nominal diameter of the eccentric enlarged diameter section. | 10-23-2014 |
20140316448 | DEVICES, SYSTEMS AND METHODS FOR A GUIDE WIRE LOADER - The present disclosure pertains to a handheld device for loading a guide wire into a medical device. The device has a housing having a slot; a driving wheel disposed within a first portion and rotatably connected to a motor disposed within the housing; a plurality of compression wheels disposed within the second portion of the housing; and a switch disposed on an outer surface of the second portion, the switch in mechanical communication with the compression wheels. When a portion of the guide wire is inserted into the slot and the switch is actuated in a first direction, the compression wheels move toward the driving wheel to grip the guide wire. When the motor is on, the driving wheel rotates to move the guide wire in an axial direction and/or rotational direction. | 10-23-2014 |
20140316451 | ROTATIONAL ATHERECTOMY DEVICE WITH BIASING CLUTCH - A rotational atherectomy system may include a drive shaft, a motor, and a clutch with a threshold torque where the clutch may include a motor plate rotationally connected to the motor, a drive shaft plate rotationally connected to the drive shaft, and a biasing clutch configured to rotationally engage the motor plate and the drive shaft plate, wherein torques less than the threshold torque are transmitted completely between the motor plate and the drive shaft plate, which remain rotationally coupled by static friction, and wherein torques greater than the threshold torque cause the motor plate and the drive shaft plate to rotate relative to one another and cause a residual torque to be transmitted between the motor and the drive shaft, the residual torque being less than the threshold torque and being determined by a kinetic coefficient of friction. | 10-23-2014 |
20150089785 | METHOD OF ATTACHING AN ELEMENT TO A DRIVE SHAFT - A method for attaching a head to a drive shaft may include winding a wire to create a drive shaft, selecting a head, forming a tapered tip on a distal end of the drive shaft, placing the head on the tapered tip such that a distal end of the tapered tip extends from a distal end of the head, engaging the distal end of the tapered tip and turning down the drive shaft to create a turned down portion, advancing the head proximally over the turned down portion, and disengaging the distal end of the tapered tip wherein the drive shaft frictionally engages the head. | 04-02-2015 |
20150094745 | ATHERECTOMY DEVICE WITH ECCENTRIC CROWN - An atherectomy device may include an elongated, flexible drive shaft having a distal end for insertion into a vasculature of a patient and having a proximal end opposite the distal end remaining outside the vasculature of the patient, a handle coupled to the proximal end of the drive shaft for controlling the drive shaft, and a head arranged proximate the distal end of the drive shaft wherein the head may include a middle portion having a substantially uninterrupted outer surface and substantially conically-shaped first and second end portions, wherein the middle portion and substantially conically-shaped end portions all have a bore extending therethrough adapted to frictionally engage a drive shaft. | 04-02-2015 |
20150094749 | DEVICES, SYSTEMS AND METHODS FOR A PILOTING TIP BUSHING FOR ROTATIONAL ATHERECTOMY - A high-speed rotational atherectomy device for opening a stenosis in an artery having a given diameter, comprising: a guide wire; a flexible elongated, rotatable drive shaft advanceable over the guide wire, the drive shaft having a proximal end and a distal end; and a piloting element fixedly attached to the drive shaft. When the piloting element is advanced to a stenosis, the piloting element creates a piloting hole when the drive shaft is rotated. | 04-02-2015 |
20150142028 | DEVICES, SYSTEMS AND METHODS FOR A PILOTING TIP BUSHING FOR ROTATIONAL ATHERECTOMY - A high-speed rotational atherectomy device for opening a stenosis in an artery having a given diameter, comprising: a guide wire; a flexible elongated, rotatable drive shaft advanceable over the guide wire, the drive shaft having a proximal end and a distal end; and a piloting member fixedly attached to the drive shaft. When the piloting member is advanced to a stenosis, the piloting member creates a piloting hole when the drive shaft is rotated. | 05-21-2015 |