Back to results
US 10,307,241 B2Granted
Embolic protection devices and methods of use
AssigneeSuzhou Jiecheng Medical Technology Co., Ltd.
InventorJi Zhang
Life of this patent
Estimating the term…
Abstract
Devices and methods for providing protection from embolisms and microembolisms in a subject undergoing catheter-based intravascular procedures. The embolic protection devices have an expandable support frame comprising u-shaped members and leg members which facilitate proper placements in a defective valve annulus. The filtering devices expand in the vessels and allow blood flow to continue through the vessels, thereby catching and removing debris of the flowing blood. Also disclosed are embolic protection devices for use with a sutureless valve prosthesis which is implanted via catheter-based methods.
Claims19
An embolic protection delivery device comprising:
- a balloon catheter having an inflatable balloon and first and second ends;
- an embolic protection device comprising first and second ends, the first end being coupled relative to the balloon catheter adjacent to the inflatable balloon, the embolic protection device comprising:
- a frame comprising a plurality of leg members coupled to a plurality of U-shaped members, the plurality of leg members extending from the first end of the device toward the second end of the device whereat each of the plurality of leg members is coupled to a respective U-shaped member, the U-shaped members being disposed at the second end of the embolic protection device, the frame defining a frame length from plurality of leg members at the first end to the U-shaped members at the second end;
- and
- a filter sheet attached to the frame along an entirety of the frame length, wherein the frame and the filter sheet are expandable from a compact state to an expanded state in which the second end is larger than the first end to form a conical shape;
- a first sheath comprising a first inner lumen configured to receive at least a portion of the embolic protection device when the embolic protection device is in the compact state, the first sheath extending distal to the embolic protection device, the first sheath being distally movable relative to the embolic protection device to permit the embolic protection device to expand to the expanded state;
- and
- a second sheath comprising a second inner lumen configured to receive at least a portion of the embolic protection device when the balloon is in an uninflated state, the second sheath being proximally movable relative to the balloon to permit the balloon to be inflated,
- wherein in the expanded state, the embolic protection device is tactilely manipulable to allow a physician to seat the U-shaped members against native valve leaflet sinuses of a native valve annulus of a patient, the second sheath being thereafter proximally movable to permit the balloon to be inflated against a native valve leaflet for enlarging the valve annulus while the seated embolic protection device minimizes chances of blood and debris contained therein from flowing around the filter thereby allowing the debris to enter a patient's circulatory system.
6 more elements
A valve prosthesis with embolic protection, the prosthesis comprising:
- a support frame comprising a plurality of leg members coupled to a plurality of U-shaped members, the plurality of leg members extending from a first end of the prosthesis toward a second end of the prosthesis whereat each of the plurality of leg members is coupled to a respective U-shaped member, the frame defining a frame length from plurality of leg members at the first end to the U-shaped members at the second end, the frame being radially expandable between a compact configuration and an expanded configuration, the support frame having an outer surface and a longitudinal axis and defining a central orifice about an axis along an inflow-outflow direction, wherein the support frame is deployable to secure at least one native valve leaflet between the support frame and at least one of the U-shaped members;
- and
- a valve clasper movably attached to the support frame via a filter sheet, wherein the filter sheet is attached to the support frame along an entirety of the frame length, the clasper comprises a u-shaped member and two leg members, and wherein the leg members are movable relative to the support frame along the longitudinal axis between a nesting position with the outer surface and an engagement position with the valve annulus.
Dependencies are inferred from the claim text.