# US 2016/0030049 A1 · Removable lung reduction devices, systems, and methods

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- Number: US 2016/0030049 A1
- Document ID: US20160030049A1
- Status: Published application
- Kind: A1
- Application number: 14/640,348
- Filed: 2015-03-06
- Published: 2016-02-04
- Earliest claimed: 2001-09-11
- Assignees: Spiration, Inc.
- Applicants: Spiration, Inc.
- Inventors: Clifton A. Alferness; Hugo X. Gonzalez; David H. Dillard
- Web page: https://patentgrep.com/patent/US20160030049A1

## CPC

- A61B 17/12104: {in an air passage}
- A61B 17/12022: {Occluding by internal devices, e.g. balloons or releasable wires (plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20)}
- A61B 17/12036: {partial occlusion}
- A61B 17/12172: {having a pre-set deployed three-dimensional shape (methods of manufacturing A61B2017/00526)}
- A61M 16/0404: {with means for selective or partial lung respiration}
- A61B 2017/1205: {Introduction devices}
- A61B 2017/12054: {Details concerning the detachment of the occluding device from the introduction device}
- A61F 2002/043: {Bronchi}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

An air passageway obstruction device includes a frame structure and a flexible membrane overlying the frame structure. The frame structure is collapsible upon advancement of the device into the air passageway, expandable into a rigid structure upon deploying in the air passageway and recollapsible upon removal from the air passageway. The flexible membrane obstructs inhaled air flow into a lung portion communicating with the air passageway. The device may be removed after deployment in an air passageway by recollapsing the device and pulling the device proximally through a catheter.

## Claims

### Claim 1

A device for limiting air flow in an air passageway, the device comprising:
an elongated frame assembly comprising a proximal end and a distal end;
the elongated frame assembly further comprising a plurality of support members extending in a proximal direction from the distal end, each of the plurality of support members comprising a bent portion, the bent portion being positioned along a distal portion of each of the plurality of support members;
a flexible membrane overlying at least the distal portion of each of the plurality of support members including the bent portion;
a proximally positioned concave recess being defined at least in part by the plurality of support members and the flexible membrane, the proximally positioned concave recess comprising a proximally facing opening;
at least one anchor being distally positioned relative to the flexible membrane;
the device defining an obstructing structure configured to be implanted into the air passageway upstream from a target region, the device being configured to be deployed in the air passageway such that the device precludes air from flowing into the target region past the device while allowing air to flow out of the target region along a path between a portion of the flexible membrane and a wall of the air passageway.