LEFT ATRIAL APPENDAGE CLOSURE
First Claim
1. A medical device for minimally invasive access and closure of a left atrial appendage comprising:
- a lumen tube having a proximate end and a distal end;
a grasping tool configured to grasp the left atrial appendage, the grasping tool extends through the lumen tube, the grasping tool is retractable to a stowed position inside the lumen tube at the distal end, and is extendable from the lumen tube during operation;
a constricting tool comprisinga closure member including a generally shaped loop portion configured to constrict around the left atrial appendage when contracted, anda tool configured to deploy, control, and position the closure member for closing the left atrial appendagethe constricting tool extends through the lumen tube and is retractable to a stowed position inside the lumen tube at the distal end, and is extendable from the lumen tube during operation; and
a set of actuators, at least one actuator for actuating the grasper tool, at least one actuator for actuating the constricting tool to deploy, control, and position the closure member, and an actuator for contracting the closure member, andeach of the grasping tool and the constricting tool are configured for independent axial movement within the lumen tube.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device is disclosed for tissue, body lumen and/or cavity closure inside a body of a patient. In one particular application, the medical device can be used for minimally invasive access and closure of a left atrial appendage of the heart. The medical device generally includes a tool used for grasping the appendage, a closure member, and at least one tool to deploy, control, and position the closure member for closing the appendage. The device can also include an expander tool for expanding the working area around the left atrial appendage to improve visibility during the procedure. In other embodiments, the medical device may include other tools, for example an imaging tool for viewing the target area and/or other tools that are considered useful in a left atrial appendage closure procedure.
212 Citations
22 Claims
-
1. A medical device for minimally invasive access and closure of a left atrial appendage comprising:
-
a lumen tube having a proximate end and a distal end; a grasping tool configured to grasp the left atrial appendage, the grasping tool extends through the lumen tube, the grasping tool is retractable to a stowed position inside the lumen tube at the distal end, and is extendable from the lumen tube during operation; a constricting tool comprising a closure member including a generally shaped loop portion configured to constrict around the left atrial appendage when contracted, and a tool configured to deploy, control, and position the closure member for closing the left atrial appendage the constricting tool extends through the lumen tube and is retractable to a stowed position inside the lumen tube at the distal end, and is extendable from the lumen tube during operation; and a set of actuators, at least one actuator for actuating the grasper tool, at least one actuator for actuating the constricting tool to deploy, control, and position the closure member, and an actuator for contracting the closure member, and each of the grasping tool and the constricting tool are configured for independent axial movement within the lumen tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A medical device for minimally invasive access and closure of a left atrial appendage comprising:
-
a multi-lumen tube connected to a lumen tube having less lumens than the multi-lumen tube, the tubes are connected such that the multi-lumen tube is disposed toward a proximate end and the lumen tube having less lumens than the multi-lumen tube is disposed toward a distal end, the lumens of the multi-lumen tube are in communication with the lumen tube; a closure sub-assembly including a plurality of tools to grasp and close the left atrial appendage, the plurality of tools configured for independent axial movement within the multi-lumen tube and the lumen tube, the plurality of tools are retractable into the lumen tube when in a stowed position, and are extendable from the lumen tube out the distal end during operation; a set of actuators for operating the closure sub-assembly; an expander sub-assembly; and an introducer sheath including a channel to introduce the closure sub-assembly and the expander sub-assembly.
-
-
22. A method of closing a left atrial appendage comprising:
-
introducing an expander to an area proximate the left atrial appendage through a channel of an introducer sheath; expanding a working space at the area proximate the left atrial appendage by retracting the introducer sheath to release an expander; introducing a closure sub-assembly through the channel of the introducer sheath; advancing a grasping tool to grasp the left atrial appendage and grasping the left atrial appendage; advancing a constricting tool to close the left atrial appendage including positioning a snare around the left atrial appendage; closing the left atrial appendage with the snare; trimming the snare; and retracting the grasping tool and the constricting tool and collapsing the working space to a state before expanding.
-
Specification