TISSUE SPREADER FOR ACCESSING PAPILLA, AND RELATED METHODS OF USE

• US 20140357946A1
• Filed: 06/03/2014
• Published: 12/04/2014
• Est. Priority Date: 06/04/2013
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: GOLDEN, John B., SMITH, Paul, DeVRIES, Robert B., KAPPEL, Gary S., NAHON, Vanessa, HARTMAN, Ryan, FORD, Michael Killion, BLAIR, Kenneth, BERTOLINO, William, WELDON, James, FIRSTENBERG, Laura Elizabeth, BALDERRAMA, Desiree Dawn, MANNION, Paul, WINDHEUSER, James, KING, Kenny Joe, SIMANI, Heather A., DAHYA, Ritesh, GRANT, Kerry L.
• Application Number:
  US14/294,888
• Publication Number:
  US 20140357946A1
• Time in Patent Office: Days
• US Class Current: 600/104
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/0034 adapted to be inserted through a working channel of an endoscope
• CPC Class Codes: A61B 2017/00858 high friction, non-slip on handles A61B2017/00429
• CPC Class Codes: A61B 2017/320044 Blunt dissectors blunt suture needles A61B2017/06085
• CPC Class Codes: A61B 2017/3458 threaded
• CPC Class Codes: A61B 2017/3488 Fixation to inner organ or inner body tissue
• CPC Class Codes: A61B 2018/00196 reciprocating lengthwise
• CPC Class Codes: A61B 2018/00494 Stomach, intestines or bowel
• CPC Class Codes: A61B 2018/00553 Sphincter
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image

Abstract

The medical device may include an elongate member having a proximal end and a distal end, and a plurality of legs coupled to the distal end of the elongate member. The medical device may also include a moveable element distal to the distal end of the elongate member, disposed around the plurality of legs. The moveable element may be reciprocally moveable relative to the elongate member and plurality of legs between a first and second position. The plurality of legs may be in a collapsed configuration when the moveable element is in the first position, and may be in an expanded configuration when the moveable element is in the second position.

Claims

1. A medical device, comprising:

an elongate member having a proximal end and a distal end;

a plurality of legs coupled to the distal end of the elongate member; and

a moveable element distal to the distal end of the elongate member, disposed around the plurality of legs, and reciprocally moveable relative to the elongate member and the plurality of legs between a first position and a second position, wherein;

the plurality of legs are in a collapsed configuration when the moveable element is in the first position; and

the plurality of legs are in an expanded configuration when the moveable element is in the second position.

2. The medical device of claim 1, further comprising an actuating mechanism to move the movable element from the first position to the second position and, wherein the second position is proximal to the first position.

3. The medical device of claim 1, wherein the plurality of legs extend radially outward to move from the collapsed configuration to the expanded configuration.

4. The medical device of claim 1, wherein in the collapsed configuration, free distal ends of the plurality of legs are converged to penetrate a papilla.

5. The medical device of claim 1, wherein free distal ends of each of the plurality of legs includes a plurality of protrusions configured to engage bodily tissue atraumatically.

6. The medical device of claim 1, wherein the plurality of legs are substantially parallel to a longitudinal axis of the medical device while in the collapsed configuration.

7. The medical device of claim 6, wherein each of the plurality of legs includes a branch member at a distal end, wherein the branch member is angled toward the longitudinal axis.

8. The medical device of claim 7, wherein each of the plurality of legs has a wavy shape in the expanded configuration, and a pad coupled to the branch member.

9. The medical device of claim 1, wherein the plurality of legs form a cylindrical, distal tip in the collapsed configuration, wherein the moveable element is on a plurality of moveable elements, and at least one moveable element of the plurality of moveable elements is coupled to each of the plurality of legs.

10. The medical device of claim 1, further including a coating coupled to each of the plurality of legs, the coating including a plurality of protrusions.

11. The medical device of claim 10, wherein each of the plurality of protrusions has a diameter from about 1 μ

m to about 100 μ

m.

12. A method of using a medical device, comprising:

inserting an elongate member having a proximal end and a distal end into a body passage;

directing a plurality of legs coupled to the distal end of the elongate member toward a papilla while the plurality of legs are in a collapsed configuration; and

moving, in a proximal direction, a moveable element distal to the distal end of the elongate member from a first position to a second position to cause the plurality of legs to move from the collapsed configuration to an expanded configuration.

13. The method of claim 12, further comprising inserting a distalmost end of each of the plurality of legs into the papilla while the plurality of legs are in the collapsed configuration.

14. The method of claim 13, further comprising moving the moveable element from the first position to the second position while the distalmost end of each of the plurality of legs is within the papilla.

15. The method of claim 12, wherein the plurality of legs grasp and stabilize bodily tissue surrounding the papilla.

16. A method for expanding a papilla, comprising:

inserting a tube into a body passage, the tube having a proximal end, a distal end, and a lumen extending between the proximal and the distal ends;

directing an elongate member disposed within the lumen through the distal end of the tube and into the papilla; and

directing a plurality of legs disposed at a distal end of the elongate member between a collapsed configuration and an expanded configuration, wherein the plurality of legs;

are biased toward a longitudinal axis of the elongate member in the collapsed configuration; and

expand radially outward from the longitudinal axis in the expanded configuration.

17. The method of claim 16, further including inserting the tube and the elongate member through an endoscope.