Patent application number | Description | Published |
20080281228 | Guidewire with adjustable stiffness - A method of adjusting the stiffness and size of a guidewire without full withdrawal of the guidewire from a patient's vascular system comprising providing a guidewire system comprising an inner member having a first outer diameter and a first stiffness, an outer member having a third larger diameter and a third stiffness, and a stiffener positioned between the inner and outer members and having a second outer diameter larger than the first diameter and smaller than the third diameter. The method includes selectively changing the relative positions of the members to alter the pushability and stiffness of the guidewire system. | 11-13-2008 |
20080281229 | Guidewire with adjustable stiffness - A medical guidewire system comprising a first inner member having a first outer diameter, a second intermediate member having a second outer diameter larger than the first outer diameter, and a third outer member having a third diameter larger than the second outer diameter of the second member. The second member has a longitudinal extending opening to receive the first member for sliding movement with respect to the first member and the third outer member has a longitudinally extending opening to receive the second member for sliding movement with respect to the first and second member. The first member has a first stiffness, the third member has a third stiffness greater than the first stiffness, and the second member is movable to stiffen the guidewire system. | 11-13-2008 |
20080294189 | VEIN FILTER - A vein filter includes a plurality of circumferentially spaced apart elongated legs having opposed proximal and distal leg portions. Adjacent distal leg portions are connected to one another by bridging structure and the legs are adapted and configured for movement between a first position and a second position. In the first position, the proximal leg portions are substantially parallel to one another. In the second position, the proximal leg portions are circumferentially divergent from one another to anchor the filter within a blood vessel. Methods of placing or relocating a vein filter in a vein utilize a catheter balloon to move the vein filter legs between first and second positions. Kits include a vein filter, a catheter balloon for moving the legs of the vein filter, and a delivery sheath for housing the vein filter for delivery within a blood vessel. | 11-27-2008 |
20090054974 | Percutaneous aortic valve - The present invention provides a valve configured for insertion on the proximal and distal sides of a heart valve annulus to replace the heart valve of a patient. The valve comprises a first substantially annular portion adapted to be positioned on a proximal side of the annulus of a patient and a second substantially annular portion adapted to be positioned on a distal side of the annulus of a patient, wherein at least one of the first and second substantially annular portions is movable towards the other portion to a clamped position to clamp around the annulus. The second portion has a flow restricting portion extending therefrom and is movable between a first position to permit the flow of blood and a second position to restrict the flow of blood. In one embodiment, the valve has a suture joining the first and second portions to draw the first and second portions into closer proximity and a cinch member to secure the suture to maintain the first and second portions in the clamped position. In another embodiment, the first and second portions are connected by a first segment which biases the first and second portions toward the clamped position. | 02-26-2009 |
20090143768 | Guidewire with adjustable stiffness - A method of adjusting the stiffness and size of a guidewire without full withdrawal of the guidewire from a patient's vascular system comprising providing a guidewire system comprising an inner member having a first outer diameter and a first stiffness, an outer member having a third larger diameter and a third stiffness, and a stiffener positioned between the inner and outer members and having a second outer diameter larger than the first diameter and smaller than the third diameter. The method includes selectively changing the relative positions of the members to alter the pushability and stiffness of the guidewire system. | 06-04-2009 |
20090143769 | Guidewire with adjustable stiffness - A medical guidewire system comprising a first inner member having a first outer diameter, a second intermediate member having a second outer diameter larger than the first outer diameter, and a third outer member having a third diameter larger than the second outer diameter of the second member. The second member has a longitudinal extending opening to receive the first member for sliding movement with respect to the first member and the third outer member has a longitudinally extending opening to receive the second member for sliding movement with respect to the first and second member. The first member has a first stiffness, the third member has a third stiffness greater than the first stiffness, and the second member is movable to stiffen the guidewire system. | 06-04-2009 |
20090177269 | Device for regulating blood flow - An implantable device for regulating blood flow through a blood vessel comprising an elongated support dimensioned and configured to be implanted in a blood vessel. The support includes a linking member linking axially spaced apart portions to one another. A valve membrane extends between the axially spaced apart support portions and includes first region folded over the first linking member and attached thereto and a second region adjacent the first region and unattached to the first linking member. The second region is movable between a first position to enable blood flow and a second position to inhibit blood flow. | 07-09-2009 |
20090209991 | Surgical instrument for grasping and cutting tissue - A surgical instrument for cutting and grasping tissue comprising a handle assembly, an elongated member and first and second jaws. A first movable member moves the second jaw in a first direction about a first pivot axis in a grasping action and a second movable member moves the second jaw in a second direction different than the first direction and about a second pivot axis in a cutting action. A switch is positioned at the proximal portion of the instrument and a selecting member is actuated by movement of the switch, the selecting member movable between a first position to enable movement of the second jaw in the first direction and prohibit movement in the second direction and a second position to enable movement of the second jaw in the second direction and prohibit movement in the first direction. | 08-20-2009 |
20100082052 | DOUBLE BALLOON THROMBECTOMY CATHETER - A catheter has a lumen for a thrombectomy device and at least two balloons of different compliancies. In one embodiment, the catheter is adapted to clear dialysis grafts. One balloon is adapted to expand a stenosis at a venous junction of a dialysis graft and another balloon is adapted to pull a stenosis at an arterial junction of a dialysis graft. A single catheter may be used to perform a dialysis thrombectomy procedure. | 04-01-2010 |
20100305475 | Guidewire with adjustable stiffness - A medical guidewire system including an inner member having an outer diameter and an outer member having an inner diameter, the inner diameter being larger than the outer diameter. The inner and outer members are relatively slidable to adjust a stiffness of the guidewire system. The lumen of the outer member forms a gap for fluid flow therethrough. A connector has a first end portion connected to the outer member, a second end portion connected to the inner member and a fluid infusion channel communicating with the gap for injection of fluid through the gap to exit a distal portion of the outer member. | 12-02-2010 |
20110004300 | PERCUTANEOUS AORTIC VALVE - The present invention provides a valve configured for insertion on the proximal and distal sides of a heart valve annulus to replace the heart valve of a patient. The valve comprises a first substantially annular portion adapted to be positioned on a proximal side of the annulus of a patient and a second substantially annular portion adapted to be positioned on a distal side of the annulus of a patient, wherein at least one of the first and second substantially annular portions is movable towards the other portion to a clamped position to clamp around the annulus. The second portion has a flow restricting portion extending therefrom and is movable between a first position to permit the flow of blood and a second position to restrict the flow of blood. In one embodiment, the valve has a suture joining the first and second portions to draw the first and second portions into closer proximity and a cinch member to secure the suture to maintain the first and second portions in the clamped position. In another embodiment, the first and second portions are connected by a first segment which biases the first and second portions toward the clamped position. | 01-06-2011 |
20110040314 | Rotational Thrombectomy Wire With Blocking Device - A thrombectomy apparatus for breaking up thrombus or other obstructive material in a lumen of a vascular graft or vessel. The apparatus includes a wire having a first configuration and a second deployed configuration, the wire having a straighter configuration in the first configuration. The wire is operatively connected to a motor for rotation of the wire to contact and break up the thrombus or other obstructive material. A blocking device at a distal portion of the apparatus is movable between a collapsed configuration and an expanded configuration, and is configured in the expanded configuration to block thrombus dislodged by rotation of the wire. | 02-17-2011 |
20110130778 | DOUBLE BALLOON THROMBECTOMY CATHETER - A catheter has a lumen for a thrombectomy device and at least two balloons of different compliancies. In one embodiment, the catheter is adapted to clear dialysis grafts. One balloon is adapted to expand a stenosis at a venous junction of a dialysis graft and another balloon is adapted to pull a stenosis at an arterial junction of a dialysis graft. A single catheter may be used to perform a dialysis thrombectomy procedure. | 06-02-2011 |
20120101568 | DEVICE FOR REGULATING BLOOD - An implantable device for regulating blood flow through a blood vessel comprising an elongated support dimensioned and configured to be implanted in a blood vessel. The support includes a linking member linking axially spaced apart portions to one another. A valve membrane extends between the axially spaced apart support portions and includes first region folded over the first linking member and attached thereto and a second region adjacent the first region and unattached to the first linking member. The second region is movable between a first position to enable blood flow and a second position to inhibit blood flow. | 04-26-2012 |
20120136429 | DEVICE FOR REGULATING BLOOD FLOW - An implantable device for regulating blood flow through a blood vessel includes an elongated support. The support includes axially spaced apart first and second substantially annular support portions, and an x-shaped linking member linking the axially spaced apart portions to one another. The device also includes a valve membrane extending between the axially spaced apart support portions and having an upper portion, a lower portion and an intermediate portion. The valve membrane includes a first region and a second lower region. The first region is folded over the linking member for attachment and the second region is adjacent the first region and unattached to the linking member. The second region is movable between a first position to enable blood flow and a second position to inhibit blood flow. | 05-31-2012 |
20130123908 | FATIGUE-RESISTANT FLOW REGULATING DEVICE AND MANUFACTURING METHODS - The artificial valves and methods described herein and shown in the drawings, provide for artificial valves with superior properties including fatigue resistance, biocompatibility, and ease of manufacture. | 05-16-2013 |
20130131643 | GUIDEWIRE WITH ADJUSTABLE STIFFNESS - A medical guidewire system including an inner member having an outer diameter and an outer member having an inner diameter, the inner diameter being larger than the outer diameter. The inner and outer members are relatively slidable to adjust a stiffness of the guidewire system. The lumen of the outer member forms a gap for fluid flow therethrough. A connector to the inner member and a fluid infusion channel communicating with the gap for injection of fluid through the gap to exit a distal portion of the outer member. | 05-23-2013 |
20130131644 | GUIDEWIRE WITH ADJUSTABLE STIFFNESS - A medical guidewire system including an inner member having an outer diameter and an outer member having an inner diameter, the inner diameter being larger than the outer diameter. The inner and outer members are relatively slidable to adjust a stiffness of the guidewire system. The lumen of the outer member forms a gap for fluid flow therethrough. A connector to the inner member and a fluid infusion channel communicating with the gap for injection of fluid through the gap to exit a distal portion of the outer member. | 05-23-2013 |
20130138092 | SURGICAL INSTRUMENT FOR GRASPING AND CUTTING TISSUE - A surgical instrument for cutting and grasping tissue comprising a handle assembly, an elongated member and first and second jaws. A first movable member moves the second jaw in a first direction about a first pivot axis in a grasping action and a second movable member moves the second jaw in a second direction different than the first direction and about a second pivot axis in a cutting action. A switch is positioned at the proximal portion of the instrument and a selecting member is actuated by movement of the switch, the selecting member movable between a first position to enable movement of the second jaw in the first direction and prohibit movement in the second direction and a second position to enable movement of the second jaw in the second direction and prohibit movement in the first direction. | 05-30-2013 |
20130190789 | ROTATIONAL THROMBECTOMY WIRE WITH BLOCKING DEVICE - A thrombectomy apparatus for breaking up thrombus or other obstructive material in a lumen of a vascular graft or vessel. The apparatus includes a wire having a first configuration and a second deployed configuration, the wire having a straighter configuration in the first configuration. The wire is operatively connected to a motor for rotation of the wire to contact and break up the thrombus or other obstructive material. A blocking device at a distal portion of the apparatus is movable between a collapsed configuration and an expanded configuration, and is configured in the expanded configuration to block thrombus dislodged by rotation of the wire. | 07-25-2013 |
20130296909 | SURGICAL INSTRUMENT FOR GRASPING AND CUTTING TISSUE - A surgical instrument for cutting and grasping tissue comprising a handle assembly, an elongated member and first and second jaws. A first movable member moves the second jaw in a first direction about a first pivot axis in a grasping action and a second movable member moves the second jaw in a second direction different than the first direction and about a second pivot axis in a cutting action. A switch is positioned at the proximal portion of the instrument and a selecting member is actuated by movement of the switch, the selecting member movable between a first position to enable movement of the second jaw in the first direction and prohibit movement in the second direction and a second position to enable movement of the second jaw in the second direction and prohibit movement in the first direction. | 11-07-2013 |
20140155988 | VASCULAR DEVICE WITH VALVE FOR APPROXIMATING VESSEL WALL - A vascular device comprising a plurality of vessel engaging members and a valve. The device is movable from a collapsed insertion position having a first diameter to a second expanded position having a second diameter larger than the first diameter. The plurality of vessel engaging members extend outwardly from the device for securely engaging the internal wall of a vessel upon expansion of the device to the second expanded position, wherein the vessel engaging members pull the internal wall of the vessel radially inwardly upon movement of the device from the second expanded position toward a first expanded position having a third diameter greater than the first diameter and less than the second diameter. In the first expanded position the valve is movable between an open position to allow blood flow therethrough to a closed position to prevent blood flow. | 06-05-2014 |