Method and apparatus for deploying and retrieving objects in a cavity
AssigneeAdient Medical, Inc.
InventorsMitchell Eggers, Jeremy Durack, Joseph Steele, Michael Hogan, Raymond Kirk, David Franklin
Life of this patent
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Abstract
The present invention relates generally to a method and apparatus for deploying and/or retrieving an object (e.g., a vena cava filter) in a cavity (e.g., a vena cava) using a system configured to: (i) maintain grip of the unsheathed object in the cavity until deliberately released, (ii) prevent premature release of the object in the cavity, and/or (iii) facilitate retrieval by first everting said object, then withdrawing the object through a guiding catheter (e.g., retrieval via eversion).
Claims29
A system configured to deliver an object to, and retrieve the object from, a location in a cavity, the system comprising:
- a guiding catheter configured to provide a conduit to and from the location for the object;
- object deployment components configured to facilitate deployment of the object through the guiding catheter at the location in the cavity;
- and
- a retention mechanism configured to secure the object while the object is in the cavity, the retention mechanism comprising:
- (i) an outer tube with distal fingers that protrude distally through an opening in an end of the object;
- and
- (ii) an inner rod or inner tube within the outer tube that prevents the distal fingers on the outer tube from collapsing;
- wherein, responsive to the inner rod or inner tube being withdrawn proximally with respect to the outer tube, the distal fingers of the outer tube collapse to facilitate withdrawal of the distal fingers through the opening in the end of the object, and withdrawal of the inner rod or inner tube and the outer tube from the object, thereby releasing the object at the location within the cavity.
A system configured to retrieve an object from a location in a cavity, the system comprising:
- a guiding catheter configured to provide a conduit to and from the location for the object;
- and
- an extraction device catheter comprising grasping and extraction components for grasping and extracting the object, the extraction device catheter configured such that the grasping and extraction components are located at a distal end of the extraction device catheter and actuator controls for the grasping and extraction components are located at a proximal end of the extraction device catheter.
A method for delivering an object to, and retrieving the object from, a location in a cavity with a delivery system, the system comprising a guiding catheter, object deployment components, and a retention mechanism, the method comprising:
- forming, with the guiding catheter, a conduit to and from the location for the object;
- facilitating, with the object deployment components, deployment of the object through the guiding catheter at the location in the cavity;
- and
- securing, with the retention mechanism, the object while the object is in the cavity, the retention mechanism comprising:
- (i) an outer tube with distal fingers that protrude distally through an opening in an end of the object;
- and
- (ii) an inner rod or inner tube within the outer tube that prevents the distal fingers on the outer tube from collapsing,
- wherein, responsive to the inner rod or inner tube being withdrawn proximally with respect to the outer tube, the distal fingers of the outer tube collapse to facilitate withdrawal of the distal fingers through the opening in the end of the object, and withdrawal of the inner rod or inner tube and the outer tube from the object, thereby releasing the object at the location within the cavity.
A method for retrieving an object from a location in a cavity with a retrieval system, the system comprising a guiding catheter and an extraction device catheter, the method comprising:
- grasping, with the extraction device catheter, the object at the location in the cavity, the extraction device catheter configured such that grasping and extraction components are located at a distal end of the extraction device catheter and actuator controls for the grasping and extraction components are located at a proximal end of the extraction device catheter;
- and
- enabling with the extraction device catheter, a user to pull proximally on an end of the object causing the object to evert, and with continued pulling advance the object into the guiding catheter for removal from the cavity.
Dependencies are inferred from the claim text.