# US 11,896,228 B2 · Devices, systems, and methods for tissue resection

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- Number: US 11,896,228 B2
- Document ID: US11896228B2
- Status: Granted
- Kind: B2
- Application number: 16/408,906
- Filed: 2019-05-10
- Published: 2019-11-14
- Granted: 2024-02-13
- Earliest claimed: 2018-05-11
- Assignees: Boston Scientific Scimed, Inc.
- Applicants: Boston Scientific Scimed, Inc.
- Inventors: Sean P. Fleury; Eric Wespi; Nicholas L Tassoni; Brian J. Hanson; Gregory Y. Lee; Jose A. Meregotte; Anthony F. Tassoni, Jr.; Kevin Windheuser; John A. Hingston; Nolan Hobart; Michael E. Zupkofska; Ryan V. Wales; Scott E. Brechbiel; Rachael Campion; Tara A. Jarobski; Danny S. Lee; Alexander J. Burnham; Christopher K. Oto; Nicholas J. Mazzola; Kevin L Bagley; Shaun D. Comee
- Web page: https://patentgrep.com/patent/US11896228B2

## CPC

- A61B 17/1114: {of the digestive tract, e.g. bowels or oesophagus}
- A61B 1/018: for receiving instruments
- A61B 17/0057: {Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect (sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009)}
- A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)}
- A61F 2/04: Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts (A61F2/18, A61F2/20 take precedence; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95)
- A61L 27/3633: {Extracellular matrix [ECM]}
- A61B 17/06166: {Sutures (suture materials A61L17/00; manufacture of artificial threads D01D; treatment of threads D06M)}
- A61B 17/083: {Clips, e.g. resilient}
- A61B 17/320016: {Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence)}
- A61B 2017/00269: {endoscopic mucosal resection EMR}
- A61B 2017/003: {Steerable}
- A61B 2017/0034: {adapted to be inserted through a working channel of an endoscope}
- A61B 2017/00579: {Barbed implements}
- A61B 2017/00592: {Elastic or resilient implements}
- A61B 2017/00623: {Introducing or retrieving devices therefor}
- A61B 2017/00659: {located only on one side of the opening}
- A61B 2017/00668: {the implement being a tack or a staple}
- A61B 2017/00818: {Treatment of the gastro-intestinal system}
- A61B 2017/00867: {shape memory effect}
- A61B 2017/00876: {magnetic}
- A61B 2017/00951: {adhesive}
- A61B 2017/081: {Tissue approximator (A61B2017/1103, A61B17/8866 take precedence)}
- A61B 2017/1132: {End-to-end connections}
- A61B 2018/00494: {Stomach, intestines or bowel}
- A61B 2018/00595: {Cauterization}
- A61B 2018/00982: {combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes}
- A61F 2002/045: {Stomach, intestines}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- 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)
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)

## Abstract

Exemplary embodiments of the present disclosure relate to devices, systems, and methods for tissue resection in a body lumen of a patient, and may include an endoscope and a backstop delivery device extendable through the endoscope. The backstop delivery device may deliver a backstop to a location of selected tissue for resection. A backstop may include a covering being deployable in a patient. The covering may have one or more anchoring mechanisms disposed on an edge of the covering. A tissue resecting device may be extendable through the endoscope for resecting the selected tissue for resection. The covering may be deployable to an outer surface of the body lumen, such that the anchoring mechanism may secure the covering to the outer surface of the body lumen and the covering may expand to cover the selected tissue for resection.

## Claims

### Claim 1

A system for tissue resection in a body lumen of a patient, the system comprising:
an endoscope;
a backstop delivery device extendable through the endoscope and positionable in the body lumen at a location of selected tissue for resection;
a backstop including a covering deployable by the backstop delivery device; and
a tissue resecting device extendable through the endoscope for resecting the selected tissue for resection;
wherein the covering:
is deployable to an outer surface of the body lumen;
has one or more anchoring mechanisms disposed on an edge thereof and securable to the outer surface of the body lumen;
is-expandable to cover the selected tissue for resection; and
is configured, when expanded and secured to the body lumen, to define a space between the covering and the outer surface of the body lumen to provide clearance between the covering and the outer surface of the body lumen during tissue resection.

### Claim 2 (depends on 1)

The system according to claim 1, wherein the backstop delivery device includes a tissue penetrating device for insertion into the selected tissue for resection.

### Claim 3 (depends on 2)

The system according to claim 2, wherein the tissue penetrating device is extendable partially in the selected tissue for resection so as to stabilize the backstop delivery device.

### Claim 4 (depends on 1)

The system according to claim 1, wherein the covering is formed of a self-expanding material, the covering having a relaxed shape memory curvature, when expanded, forming an arc shape maintaining a working space between the covering and the selected tissue for resection.

### Claim 5 (depends on 4)

The system according to claim 4, wherein the arc shape of the curvature and the edge of the covering is conformable to a curvature of the outer surface of the body lumen.

### Claim 6 (depends on 1)

The system according to claim 1, wherein the one or more anchoring mechanisms is a mechanical fastener, a suture, or an adhesive, or combinations thereof.

### Claim 7 (depends on 6)

The system according to claim 6, wherein the mechanical fasteners are hooks, barbs, clips, or clamps, or combinations thereof.

### Claim 8 (depends on 7)

The system according to claim 7, wherein the tissue resecting device is a cautery tool including a distal tip for cauterizing tissue around a perimeter of the selected tissue for resection.

### Claim 9 (depends on 1)

The system according to claim 1, wherein the edge of the covering of the backstop is configured:
to ensure a sterile barrier from the outer surface of the body lumen when secured to the body lumen; and
to extend beyond the perimeter of the selected tissue for resection such that the one or more anchoring mechanisms remain secured to the outer surface of the body lumen after resection of the selected tissue.