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Publication Number
US-11690630-B2
Publication Date
2023-07-04
Expiration Date
Abstract
System for inserting a self-expandable occluder (12) into a patient and for releasing the occluder (12) in the left atrial appendage (10) of the patient, the system including an insertion unit (100) which has a drive unit (102) and an insertion catheter including an outer tube and an inner tube extending through the outer tube, wherein a proximal end region of the occluder is movement-coupled to the outer tube, and wherein a distal end region of the occluder, is movement-coupled to the inner tube, wherein, in order to release the occluder, the drive unit interacts with the inner tube and the outer tube such that, when actuated, the inner tube can be moved in a distal or proximal direction and the outer tube can be moved in the proximal direction or distal direction, so that the distal end and the proximal end of the occluder can be moved away from or toward one another.
Core Innovation
A system inserts a self-expandable occluder into a patient and releases the occluder in the left atrial appendage. The system uses an insertion unit with an insertion catheter that includes an outer tube and an inner tube extending through the outer tube. A proximal end region of the occluder is movement-coupled to the outer tube, while a distal end region of the occluder is movement-coupled to the inner tube.
The drive unit includes a first transmission element with a first transmission thread designed as an external thread and a second transmission element with a second transmission thread designed as an external thread. An operator-actuated actuating element has a first drive thread designed as an internal thread interacting with the first transmission thread and a second drive thread designed as an internal thread interacting with the second transmission thread. The first transmission element is movement-coupled to the inner tube and the second transmission element is movement-coupled to the outer tube.
When the actuating element is actuated, the inner tube and the outer tube are moved synchronously in opposite distal or proximal directions by the same distance. Release is achieved by coordinated opposite-direction tube motion, so that the distal end and proximal end of the occluder are moved away from or toward one another, and the occluder is transferred into an insertion position and into the region of the left atrial appendage.
Claims Coverage
The consolidated content includes three independent claims centered on a catheter with an outer tube and inner tube movement-coupled to a self-expandable occluder, driven by a dual-thread transmission and actuating architecture that moves the inner and outer tubes synchronously in opposite directions by the same distance.
Synchronous opposite-direction tube movement via paired transmission and drive threads
A drive unit has a first transmission element with a first transmission thread designed as an external thread and a second transmission element with a second transmission thread designed as an external thread, and an operator-actuated actuating element having a first drive thread designed as an internal thread interacting with the first transmission thread and a second drive thread designed as an internal thread interacting with the second transmission thread, wherein the first transmission element is movement-coupled to the inner tube and the second transmission element is movement-coupled to the outer tube, such that the inner tube and the outer tube are moved synchronously in opposite distal or proximal directions by the same distance.
Movement coupling of occluder proximal and distal end regions to outer and inner tubes
A proximal end region of the occluder is movement-coupled to the outer tube and a distal end region of the occluder is movement-coupled to the inner tube, and release of the occluder is performed by moving the inner and outer tubes in opposite directions so the distal end and proximal end of the occluder are moved away from or toward one another.
Coordinated tube positioning in the left atrial appendage region
The inner tube and outer tube are moved to transfer the occluder into its insertion position and into the region of the left atrial appendage.
The inventive coverage is the movement-coupled occluder arrangement together with the dual-thread drive unit that synchronously moves the inner tube and outer tube in opposite directions by the same distance to transfer the occluder between insertion and release positions.
Stated Advantages
Documented Applications
Inserting a self-expandable occluder into a patient and releasing the occluder in the left atrial appendage.
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