US 10,092,324 B2 · Systems and methods for percutaneous removal of objects from an internal body space

Abstract

Disclosed are systems, methods, and devices for percutaneous retrieval of objects, such as endovascular devices, from an internal body space. The present inventions have vascular, non-vascular (gastrointestinal), and surgical (laproscopic) applications. The inventions include a retrieval end having one or more compressed states and an expanded state, the retrieval end adopting the expanded state when the retrieval end is deployed into a subject's internal body space, the retrieval end having a mouth through which an object can be passed into an interior space within the retrieval end when the retrieval end is in the expanded state, the mouth being adjustable between an opened state and a closed state; wherein when at least a portion of the retrieval end of the inner sheath is transitioned to a compressed state following capture of the object, the retrieval end exerts an inward force that at least partially collapses or compresses the object.

Claims31

Dependent claims

A system for percutaneous retrieval of an endovascular device within a subject's internal body space comprising:

an outer sheath having a lumen and being configured for percutaneous insertion into a subject's internal body space;
an inner sheath that is configured for percutaneous insertion into the subject's internal body space via the lumen of the outer sheath, the inner sheath comprising
a distal retrieval end having one or more compressed states and an expanded state, the retrieval end adopting one of the compressed states when the retrieval end is housed within the lumen of the outer sheath, and adopting the expanded state when the retrieval end is deployed into the subject's internal body space by exiting a distal end of the outer sheath,
the retrieval end having a main body portion terminating distally in a mouth through which the endovascular device can be passed into an interior space within the retrieval end when the retrieval end is in the expanded state,
the main body portion being sized to enclose the endovascular device, and the mouth being adjustable between an opened state and a closed state so that the endovascular device can be enclosed within the interior space after passing through the mouth of the retrieval end;
wherein the retrieval end comprises a wire weave formed from wires having a first braiding angle of about 45 degrees to about 85 degrees when the retrieval end is in the expanded state and before withdrawal of any portion of the retrieval end into the outer sheath, the wires of said wire weave having a diameter of about 200 to about 300 μm, and the wire weave comprises 12, 24, 48, or 96 wire ends;
and,
wherein when at least a portion of the retrieval end of the inner sheath is withdrawn into the outer sheath following capture of the endovascular device within the interior space of the retrieval end, the retrieval end exerts an inward force that at least partially collapses or compresses the endovascular device to a degree that is sufficient to permit withdrawal of the endovascular device into the outer sheath.

5 more elements

A method for percutaneously retrieving an object within a subject's internal body space comprising:

delivering to the subject's internal body space an outer sheath having a lumen;
introducing an inner sheath into the lumen of the outer sheath, the inner sheath comprising
a distal retrieval end having one or more compressed states and an expanded state, the retrieval end adopting one of the compressed states when the retrieval end is housed within the lumen of the outer sheath, and adopting the expanded state when the retrieval end is deployed into the subject's internal body space by exiting a distal end of the outer sheath,
the retrieval end having a mouth through which the object can be passed into an interior space within the retrieval end when the retrieval end is in the expanded state, the mouth being adjustable between an opened state and a closed state so that the object can be enclosed within the interior space after passing through the mouth of the retrieval end,
wherein the retrieval end comprises a wire weave formed from wires having a first braiding angle of about 45 degrees to about 85 degrees when the retrieval end is in the expanded state and before withdrawal of any portion of the retrieval end into the outer sheath, the wires of said wire weave having a diameter of about 200 to about 300 μm, and the wire weave comprises 12, 24, 48, or 96 wire ends;
advancing the inner sheath through the lumen of the outer sheath until the retrieval end is deployed into the subject's internal body space by exiting the distal end of the outer sheath;
capturing the object at least partially within the interior space of the retrieval end;
at least partially closing the mouth of the retrieval end in order to enclose the object within the interior space of the retrieval end;
withdrawing the inner sheath through the lumen of the outer sheath until the retrieval end exerts an inward force that at least partially collapses or compresses the object;
and,
withdrawing the retrieval end into the lumen of the outer sheath, thereby removing the object from the subject's internal body space.

8 more elements

A device for percutaneously retrieving an endovascular device from a subject's internal body space comprising:

an elongated tube portion that is configured for percutaneous introduction into a subject and that terminates in a distal retrieval end,
the distal retrieval end comprising a wire weave formed from wires and having one or more compressed states and an expanded state, the retrieval end adopting one of the compressed states when the retrieval end is housed within a lumen of an outer sheath, and adopting the expanded state when the retrieval end is deployed into the subject's internal body space by exiting a distal end of the outer sheath,
the wire weave of the retrieval end having a first braiding angle of about 45 degrees to about 85 degrees when the retrieval end is in the expanded state, the wires of said wire weave having a diameter of about 200 to about 300 μm, and the wire weave comprises 12, 24, 48, or 96 wire ends,
the retrieval end having a main body portion distally terminating in a mouth through which the endovascular device can be passed into an interior space within the retrieval end when the retrieval end is in the expanded state, the main body portion being sized to enclose the endovascular device, and the mouth being adjustable between an opened state and a closed state so that the endovascular device can be enclosed within the interior space after passing through the mouth of the retrieval end.

1 more element