US 11,051,853 B2
Systems and methods for percutaneous removal of objects from an internal body space
Matthew J. Gillespie, Bryn Mawr, PA (US); Mark Piper, West Chester, PA (US); Joseph H. Gorman, III, Lower Gwynedd, PA (US); and Robert C. Gorman, Lower Gwynedd, PA (US)
Assigned to The Trustees of the University of Pennsylvania, Philadelphia, PA (US); and The Children's Hospital of Philadelphia, Philadelphia, PA (US)
Appl. No. 15/757,144
Filed by THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, Philadelphia, PA (US); and THE CHILDREN'S HOSPITAL OF PHILADELPHIA, Philadelphia, PA (US)
PCT Filed Sep. 2, 2016, PCT No. PCT/US2016/050108
§ 371(c)(1), (2) Date Mar. 2, 2018,
PCT Pub. No. WO2017/040926, PCT Pub. Date Mar. 9, 2017.
Claims priority of provisional application 62/214,475, filed on Sep. 4, 2015.
Prior Publication US 2018/0271685 A1, Sep. 27, 2018
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/50 (2006.01); A61B 17/221 (2006.01); A61B 17/22 (2006.01); A61F 2/962 (2013.01); A61F 2/24 (2006.01); A61B 17/00 (2006.01); A61F 2/95 (2013.01)
CPC A61B 17/50 (2013.01) [A61B 17/221 (2013.01); A61B 17/22031 (2013.01); A61F 2/962 (2013.01); A61B 2017/00367 (2013.01); A61B 2017/00778 (2013.01); A61B 2017/2215 (2013.01); A61B 2017/22034 (2013.01); A61B 2017/22035 (2013.01); A61F 2/2427 (2013.01); A61F 2002/9528 (2013.01)] 32 Claims
OG exemplary drawing
 
1. 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 adapted for insertion into a subject's internal body space;
an inner sheath that is adapted for insertion into the subject's internal body space via the lumen of the outer sheath, the inner sheath comprising
a 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 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 endovascular device 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 endovascular device can be enclosed within the interior space after passing through the mouth of the retrieval end,
the retrieval end comprising a main body portion having a diameter of about 25-35 mm in the expanded state,
the wire weave comprising 11-21 picks per centimeter,
the wires of the wire weave having a diameter of about 100 to about 300 μm, and
a lumen extending from a proximal end of the inner sheath to the retrieval end, the lumen housing a control line that is attached to the retrieval end at least at the mouth and is configured to change a position of the mouth of the retrieval end relative to the endovascular device within the subject's internal body space;
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.