# US 2021/0275201 A1 · Retrieval systems and methods for use thereof

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- Number: US 2021/0275201 A1
- Document ID: US20210275201A1
- Status: Published application
- Kind: A1
- Application number: 17/303,322
- Filed: 2021-05-26
- Published: 2021-09-09
- Earliest claimed: 2010-07-15
- Assignees: Covidien LP
- Applicants: Covidien LP
- Inventors: Brian B. Martin; Julio Aguilar
- Web page: https://patentgrep.com/patent/US20210275201A1

## CPC

- A61B 17/221: Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)}
- A61B 17/320725: {with radially expandable cutting or abrading elements (A61B17/32075 takes precedence)}
- A61B 17/32075: {Pullback cutting; combined forward and pullback cutting, e.g. with cutters at both sides of the plaque}
- A61B 2017/22034: {for gripping the obstruction or the tissue part from inside}
- A61B 2017/22094: {for crossing total occlusions, i.e. piercing}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## 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.

## Claims

### Claim 1

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.