Granted Patent B2

US 12,408,973 · App. 17/336,991 · Granted Sep 9, 2025

Inventors: Fionan Keady (Limerick, IE); Margaret Long (Limerick, IE)

Assignee: COOK MEDICAL TECHNOLOGIES LLC

A61B18/1482A61B2017/00278A61B2018/00482A61B2018/00601A61B18/1206A61B18/1477A61B2018/1495

Abstract

Claims (22)

1. A method of gaining access into a pseudocyst, the method comprising:

delivering an electrosurgical device separate from an endoscope to a treatment site, the electrosurgical device delivered to the treatment site via a channel or lumen of the endoscope, the electrosurgical device comprising an outer elongate tubular member, an inner elongate tubular member, and a conductive tubular element disposed on an outer surface of the inner elongate tubular member, wherein an outer diameter of the conductive tubular element is greater than five French (one and two-thirds millimeters) and less than ten French (three and one-third millimeters);

electrically activating the conductive tubular element; and

creating an opening in the pseudocyst by initially cutting the pseudocyst with the electrically activated conductive tubular element and moving the electrically activated conductive tubular element into the pseudocyst while leaving the outer elongate tubular member outside of the pseudocyst, wherein the pseudocyst does not have any opening from cutting prior to the initial cutting with the electrically activated conductive tubular element.

2. The method of claim 1 , wherein creating the opening comprises creating an incision in the pseudocyst.

3. The method of claim 1 , wherein creating the opening comprises creating the opening with only the electrically activated conductive tubular element.

4. The method of claim 1 , wherein initially cutting into the pseudocyst comprises distally advancing a distal end of the conductive tubular element into the pseudocyst while the conductive tubular element is electrically activated.

5. The method of claim 1 , wherein initially cutting into the pseudocyst comprises initially cutting into the pseudocyst with a side surface defining a distal end of the conductive tubular element.

6. The method of claim 1 , further comprising: after creating the opening, positioning a drainage device in the opening for drainage of the pseudocyst.

7. The method of claim 6 , further comprising:

before positioning the drainage device in the opening, distally advancing a distal portion of a wireguide through the opening to within the pseudocyst; and

distally advancing the drainage device over the wireguide to the treatment site in order to position the drain device in the opening.

8. The method of claim 7 ,

wherein distally advancing the distal portion of the wireguide comprises distally advancing the distal portion through a wireguide lumen of the elongate tubular member.

9. The method of claim 1 , wherein the conductive tubular element comprises at least one of a conductive cannula or a conductive coil.

10. The method of claim 1 , further comprising:

delivering electrical current in a range of 80-120 Watts to the conductive tubular element while the conductive tubular element is cutting into the pseudocyst to create the opening.

11. The method of claim 1 , wherein the inner elongate tubular member comprises a body and a wireguide lumen longitudinally extending through the body, the body comprising an insulating material that electrically insulates the wireguide lumen from the conductive tubular element.

12. The method of claim 1 , wherein the treatment site is in a gastrointestinal tract of the patient.

13. The method of claim 12 , wherein the pseudocyst is adjacent a wall of the gastrointestinal tract, the method further comprising:

cutting into the wall before cutting into the pseudocyst in order to create the opening.

14. The method of claim 13 , wherein the pseudocyst is adjacent the wall outside the gastrointestinal tract.

Assignments (1)

Continuity (3)

References Cited (26)