MEDICAL DEVICE AND RELATED METHODS

• US 20170049471A1
• Filed: 08/18/2016
• Published: 02/23/2017
• Est. Priority Date: 08/20/2015
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: TONG, Ray, GAFFNEY, Brian, RAYBIN, Samuel, SMITH, Paul, SUON, Naroun
• Granted Patent: US 10,610,254 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 2017/00269 endoscopic mucosal resection EMR
• CPC Class Codes: A61B 2017/00296 mounted on an endoscope
• CPC Class Codes: A61B 2017/00358 Snares for grasping
• CPC Class Codes: A61B 2017/00818 Treatment of the gastro-intestinal system
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/32006 with a cutting strip, band or chain, e.g. like a chainsaw
• CPC Class Codes: A61B 2018/141 Snare

Abstract

Exemplary medical devices may include a snare device. The snare device may include a first leg having a proximalmost end and a second leg having a proximalmost end. The first leg and the second leg may form a distal loop. The proximalmost end of first leg may be independently moveable relative to the proximalmost end of the second leg.

Claims

1. A medical device, comprising:

a first leg having a proximalmost end; and

a second leg having a proximalmost end, wherein the first leg and the second leg form a distal loop, and wherein the proximalmost end of first leg is independently moveable relative to the proximalmost end of the second leg.

2. The medical device of claim 1, wherein at least a portion of a surface of at least one of the first leg and the second leg includes a plurality of teeth, the surface facing an interior of the distal loop.

3. The medical device of claim 1, wherein the first leg and the second leg include a plurality of segments, wherein a flexibility of at least one of the plurality of segments is different than a flexibility of an adjacent segment.

4. The medical device of claim 3, wherein the plurality of segments consist of only one wire.

5. The medical device of claim 3, wherein a first segment of the plurality of segments includes a first wire, and a second segment of the plurality of segments includes a second wire.

6. The medical device of claim 3, wherein a cross-sectional thickness of a first segment of the plurality of segments is different than a cross-sectional thickness of a second segment of the plurality of segments.

7. The medical device of claim 1, further comprising at least one actuation mechanism configured to move at least one of the proximalmost end of the first leg and the proximalmost end of the second leg.

8. The medical device of claim 7, wherein the at least one actuation mechanism includes one of a knob, a lever, a screw, and a rotation wheel.

9. A medical device, comprising:

a first leg having a proximal end;

a second leg having a proximal end, wherein the first leg and the second leg form a distal loop;

a rotatable handle portion coupled to the proximal end of the first leg and the proximal end of the second leg; and

a stationary handle portion, wherein the rotatable handle portion is rotatable about an axis perpendicular to a longitudinal axis of the stationary handle portion.

10. The medical device of claim 9, wherein the rotatable handle portion is configured to move at least one of the proximal end of the first leg and the proximal end of the second leg.

11. The medical device of claim 9, wherein the rotatable handle portion includes a pulley, and the proximal end of the first leg and the proximal end of the second leg are connected to form a continuous proximal loop around the pulley.

12. The medical device of claim 11, further comprising a motor configured to rotate the pulley.

13. The medical device of claim 9, wherein the rotatable handle portion includes a rotation wheel, and the proximal end of the first leg and the proximal end of the second leg are fixedly attached to the rotation wheel.

14. The medical device of claim 9, wherein the rotatable handle portion is configured to move the distal loop in one or both of a clockwise direction or a counterclockwise direction.

15. The medical device of claim 9, wherein the rotatable handle portion is configured to alternate between clockwise movement and counterclockwise movement of the distal loop.

16. A method for resecting tissue, comprising:

inserting a snare into a body, wherein the snare includes a first leg with a proximalmost end and a second leg with a proximalmost end, wherein the first leg and the second leg cooperatively form a distal loop;

grasping tissue with the distal loop;

moving the proximalmost end of the first leg relative to the proximalmost end of the second leg in a first direction; and

thereafter moving the proximalmost end of the first leg relative to the proximalmost end of the second leg in a second direction, opposite the first direction.

17. The method of claim 16, wherein at least a portion of a surface of at least one of the first leg and the second leg includes a plurality of teeth, the surface facing an interior of the distal loop.

18. The method of claim 17, wherein the plurality of teeth resect the tissue.

19. The method of claim 16, further comprising repeating the steps of moving the proximalmost end of the first leg relative to the proximalmost end of the second leg in the first direction, and thereafter moving the proximalmost end of the first leg relative to the proximalmost end of the second leg in the second direction.

20. The method of claim 19, further comprising:

after the repeating the steps, pulling the distal loop proximally.