Endoscopic full thickness resection device

Patent metadata

Field	Value
Publication number	US-11457973-B2
Application number	US-201916408926-A
Country	US
Kind code	B2
Filing date	May 10, 2019
Priority date	May 11, 2018
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

The present disclosure relates generally to devices and methods for full thickness tissue resection of an organ (e.g., intestine). In some embodiments, a device includes a conduit, and a plurality of arms rotatably coupled to the conduit. Each of the plurality of arms is movable between a collapsed position and an expanded position, wherein the plurality of arms extends radially outward from the conduit in the expanded position. The device may further include an electrocautery wire coupled to each of the plurality of arms, the electrocautery wire positioned directly adjacent an exterior tissue wall when the plurality of arms is in the expanded position. The device may be advanced back in towards a lumen of the organ until a targeted section of tissue is cut by the electrocautery wire and removed.

First claim

What is claimed is:

1. A tissue resection device, comprising:
a conduit;
a plurality of arms rotatably coupled to the conduit, each of the plurality of arms having a proximal end and a distal end opposite the proximal end, and being movable between a collapsed position and an expanded position, wherein the plurality of arms extends radially outward from the conduit in the expanded position;
an electrocautery wire coupled to the plurality of arms, the electrocautery wire positionable directly adjacent an exterior tissue wall and proximal to the plurality of arms when the plurality of arms is in the expanded position; and
a tissue latching barb extending from the distal end of each of the plurality of arms, wherein the tissue latching barb extends substantially perpendicularly from the distal end of each of the plurality of arms when the plurality of arms is in the expanded position wherein the proximal end of each of the plurality of arms is directly coupled to the conduit; and the distal end of each of the plurality of arms includes an opening receiving the electrocautery wire.

2. The tissue resection device of claim 1 , further comprising an electrocautery tip extending from the plurality of arms, the electrocautery tip operable to perforate an interior tissue.

3. The tissue resection device of claim 2 , wherein the electrocautery tip is integrally coupled with one or more of the plurality of arms.

4. The tissue resection device of claim 1 , further comprising a control wire coupled to the plurality of arms and to the conduit, wherein the control wire is operable to move the arms between the collapsed position and the expanded position.

5. The tissue resection device of claim 4 , wherein the control wire extends through an opening in the conduit, and wherein the control wire is directly coupled to each of the plurality of arms.

6. The tissue resection device of claim 1 , the plurality of arms comprising three arms arranged circumferentially apart from one another by approximately 120°.

7. The tissue resection device of claim 1 , the plurality of arms comprising two arms arranged circumferentially apart from one another by approximately 180°.

8. The tissue resection device of claim 1 , wherein the electrocautery wire is a single wire extending between each of the plurality of arms to form a substantially triangular outline.

9. The tissue resection device of claim 1 , further comprising a cover extending between each of the plurality of arms, the cover operable to capture a targeted section of tissue.

10. An endoscopic full thickness resection device, comprising:
a conduit;
a plurality of arms rotatably coupled to the conduit, each of the plurality of arms movable between a collapsed position and an expanded position, wherein each of the plurality of arms extends radially outward from the conduit in the expanded position and the plurality of arms are spaced circumferentially apart from one another by approximately 120°; and
an electrocautery wire extending between a distal end of each of the plurality of arms, the electrocautery wire positioned directly adjacent an exterior tissue wall and proximal to the plurality of arms when the plurality of arms is in the expanded position.

11. The endoscopic full thickness resection device of claim 10 , further comprising an electrocautery tip extending from the plurality of arms, the electrocautery tip operable to perforate an interior tissue wall when the plurality of arms is in the collapsed position.

12. The endoscopic full thickness resection device of claim 10 , further comprising a control wire coupled between the plurality of arms and the conduit, wherein the control wire is operable to move the arms between the collapsed position and the expanded position.

13. A method for tissue resection comprising:
positioning a tissue resection device within a lumen of an organ, the tissue resection device comprising:
a conduit;
a plurality of arms rotatably coupled to the conduit, each of the plurality of arms movable between a collapsed position and an expanded position; and
an electrocautery wire coupled to the plurality of arms;

penetrating a wall of the organ with the tissue resection device;
extending the plurality of arms radially outward from the conduit to the expanded position, wherein the electrocautery wire is positioned directly adjacent an exterior of the wall of the organ and proximal to the plurality of arms;
retracting the tissue resection device towards the lumen of the organ to resect a targeted section of the wall of the organ; and
engaging the wall of the organ with a set of tissue latching barbs.

14. The method according to claim 13 , further comprising:
energizing the electrocautery wire after the electrocautery wire is brought into position directly adjacent the exterior of the wall of the organ; and
contacting the exterior of the wall of the organ with the electrocautery wire to penetrate the wall of the organ.

15. The method according to claim 13 , further comprising:
providing an electrocautery tip extending from the plurality of arms; and
perforating, when the plurality of arms is in the collapsed position, an interior tissue wall of the organ using the electrocautery tip.

16. The method according to claim 13 , further comprising biasing the plurality of arms between the collapsed and expanded positions using a control wire coupled between the plurality of arms and the conduit.

17. The method according to claim 13 , further comprising:
retracting the tissue resection device into an endoscopic tissue clamping device; and
securing a fastener around an opening in the wall of the organ, the opening formed by removal of the targeted section of the wall.

Assignees

• Boston Scient Scimed Inc

Inventors

• Ko Michael Y
• Hingston John A
• Horowitz Andrew
• WINDHEUSER Kevin

Classifications

• A61B2018/00214

  Expandable means emitting energy, e.g. by elements carried thereon · CPC title

• A61B2018/00601

  Cutting · CPC title

• A61B18/149 Primary

  bow shaped or with rotatable body at cantilever end, e.g. for resectoscopes, or coagulating rollers · CPC title

• A61B2018/00595

  Cauterization · CPC title

• A61B2018/00279

  deployable · CPC title