Endoscopic stone-extraction device

• US 10,258,355 B2
• Filed: 06/07/2016
• Issued: 04/16/2019
• Est. Priority Date: 06/12/2014
• Status: Active Grant

• Current Assignee: Innon Holdings, LLC
• Original Assignee: Innon Holdings, LLC
• Inventors: Dhindsa, Avtar S.
• Primary Examiner(s): Shi, Katherine M
• Application Number:
  US15/175,893
• Publication Number:
  US 20160278798A1
• Time in Patent Office: 1,043 Days
• Field of Search: 606113, 606127, 606128, 606200
• CPC Class Codes: A61B 1/00137 End pieces at either end of the endoscope, e.g. caps, seals or forceps plugs
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 1/307 for the urinary organs, e.g. urethroscopes, cystoscopes
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2017/2217 single wire changing shape to a gripping configuration

Abstract

An endoscopic stone-extraction device is provided comprising a support filament comprising an end portion, a sheath comprising a lumen, wherein the support filament is disposed in the lumen such that the sheath is slideable with respect to the support filament, and a handle comprising an actuator. Movement of the actuator in a first direction retracts the sheath and causes a shape to expand outside the lumen. Movement of the actuator in a second direction advances the sheath and causes the shape to at least partially collapse inside the lumen. Other embodiments are provided, and any of these embodiments can be used alone or in combination.

Claims

1. An endoscopic stone-extraction device comprising:

a support filament comprising an end portion;

a sheath comprising a lumen, wherein the support filament is disposed in the lumen such that the sheath is slideable with respect to the support filament; and

a handle comprising an actuator;

wherein movement of the actuator in a first direction retracts the sheath and causes the end portion to expand outside the lumen in a basket shape that tapers from a larger portion closer to the sheath to a smaller portion farther away from the sheath, wherein the larger portion is an opening of the basket shape and the opening is a first two-dimensional shape that is generally perpendicular to an axis of the lumen, wherein the smaller portion is meshed across a perimeter and the perimeter is a second two-dimensional shape that is smaller than the first two-dimensional shape and generally perpendicular to the axis of the lumen, and wherein the basket shape is connected to the support filament via two secondary filaments attached on opposite sides of the opening, and the larger portion and the smaller portion are joined together by at least two additional filaments; and

wherein movement of the actuator in a second direction advances the sheath and causes the larger portion of the basket shape to at least partially collapse inside the lumen.

2. The endoscopic stone-extraction device of claim 1, wherein the first and second two-dimensional shapes are circular shapes.

3. The endoscopic stone-extraction device of claim 1, wherein the first and second two-dimensional shapes are rectangular shapes.

4. The endoscopic stone-extraction device of claim 1, wherein the first and second two-dimensional shapes are triangular shapes.

5. The endoscopic stone-extraction device of claim 1, wherein sides of the basket shape are meshed.

6. The endoscopic stone-extraction device of claim 1, wherein sides of the basket shape are open.

7. An endoscopic stone-extraction device comprising:

a support filament comprising an end portion and configured to be disposed in a lumen of a sheath that is slideable with respect to the support filament; and

the end portion configured, in response to retraction of the sheath, to expand in a basket shape that tapers from a larger portion to a smaller portion, wherein the larger portion is an opening of the basket shape, the smaller portion is a flat meshed surface coupled to the larger portion by at least two filaments, and the opening of the larger portion is substantially parallel to the flat meshed surface of the smaller portion.

8. The endoscopic stone-extraction device of claim 7, wherein the larger and smaller portions are circular shapes.

9. The endoscopic stone-extraction device of claim 7, wherein the larger and smaller portions are rectangular shapes.

10. The endoscopic stone-extraction device of claim 7, wherein the larger and smaller portions are triangular shapes.

11. The endoscopic stone-extraction device of claim 7, wherein sides of the basket shape are meshed.

12. The endoscopic stone-extraction device of claim 7, wherein sides of the basket shape are open.