Retrieval systems and methods for use thereof
AssigneeLazarus Effect, Inc.
InventorBrian B. Martin
Life of this patent
Estimating the term…
Abstract
The devices and methods described herein relate to improved structures for removing obstructions from body lumens. Such devices have applicability in through-out the ho including clearing of blockages within the vasculature, by addressing the frictional resistance on the obstruction prior to attempting to translate and/or mobilize the obstruction within the body lumen.
Claims29
A funnel device for securing debris and/or devices within a vessel, the funnel device comprising:
- a shaft having a flexibility to navigate through tortuous anatomy and having a lumen extending therethrough;
- a funnel comprising a distal opening and a proximal portion connected to the shaft and a cavity therebetween such that when the funnel is expanded the funnel tapers in a proximal direction towards the shaft, the funnel comprising a mesh material secured to the shaft such that when expanded the mesh material forms a funnel configuration having at least an exterior mesh wall and an interior mesh wall that are shape;
- and
- where at least a portion of the mesh material is porous to permit fluid flow therethrough.
(canceled)
7-8. (canceled)
12-23. (canceled)
An obstruction removal system for removing obstructions from a body lumen;
- the removal system comprising:
- a retrieval device for securing the obstruction;
- a shaft having a flexibility to navigate through tortuous anatomy and having a lumen extending therethrough;
- where the retrieval device is axially advanceable through the lumen;
- a funnel comprising a distal opening and a proximal portion connected to the shaft and a cavity therebetween such that when the funnel is expanded the funnel tapers in a proximal direction towards the shaft, the funnel comprising a mesh material secured to the shaft such that when expanded the mesh material forms a funnel configuration having at least an exterior mesh wall and an interior mesh wall that are shape set;
- and
- where at least a portion of the mesh material is porous to permit fluid flow therethrough.
25-26. (canceled)
30-31. (canceled)
35-50. (canceled)
A method of retrieving an obstruction from a vessel, the method comprising:
- advancing an obstruction capture device into the blood vessel;
- engaging the obstruction capture device with the obstruction;
- deploying a multi-wall funnel having a plurality of walls, proximal to the obstruction capture device, where the multi-wall funnel comprises at least an exterior wall separated from an interior wall when the multi-wall funnel is expanded, the exterior and interior wall defining an opening and a cavity where the multi-wall funnel tapers in a proximal direction;
- withdrawing the obstruction capture device proximally into the opening and cavity of the multi-wall wall funnel;
- securing at least a portion of the obstruction capture device within the multi-wall funnel by engaging the obstruction capture device with the interior wall of the multi-wall funnel, where continued proximal movement of the obstruction capture device causes the interior wall to move in an axially proximal direction.
A retrieval device comprising:
- an elongated stent extending from an inner connection wire, where the inner connection wire is coupled to a handle;
- a funnel extending from a outer shaft, where the elongated stent and inner connection wire are moveable through the outer shaft, and where the outer shaft is coupled to the handle;
- a control member coupled to the elongated stent, where relative movement of the handle and control member permit independent motion of the elongated stent with respect to the funnel.
(canceled)
Dependencies are inferred from the claim text.