Endoscopic Stone-Extraction Device

• US 20150359548A1
• Filed: 08/05/2014
• Published: 12/17/2015
• Est. Priority Date: 06/12/2014
• Status: Active Grant

• Current Assignee: INNON Holding, LLC, Innon Holdings, LLC
• Original Assignee: Innon Holdings, LLC
• Inventors: Dhindsa, Avtar S.
• Granted Patent: US 9,655,634 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 provides, 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 corkscrew shape; and

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

2. The endoscopic stone-extraction device of claim 1, wherein the corkscrew shape is a conical-corkscrew shape that tapers from a larger portion closer to the sheath to a smaller portion farther away from the sheath.

3. The endoscopic stone-extraction device, wherein the corkscrew shape is arced in a direction generally perpendicular to an axis of the lumen, and wherein the corkscrew shape is connected to the support filament via a plurality of secondary filaments.

4. 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 rake shape, wherein the rake shape is connected to the support filament via a plurality of secondary filaments; and

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

5. The endoscopic stone-extraction device of claim 4, wherein the rake shape comprises pointed prongs.

6. The endoscopic stone-extraction device of claim 4, wherein the rake shape comprises rounded prongs.

7. 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 large portion is an opening of the basket shape, wherein the smaller portion is meshed, and wherein the basket shape is connected to the support filament via a plurality of secondary filaments; and

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

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 the larger and smaller portions are joined together by an additional plurality of filaments.

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

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

15. The endoscopic stone-extraction device of claim 7, wherein sides of the two-dimensional mesh shape is a square.

14. 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 two-dimensional mesh shape that is generally perpendicular to an axis of the lumen, wherein the two-dimensional mesh shape is connected to the support filament via a plurality of secondary filaments; and

wherein movement of the actuator in a second direction advances the sheath and causes the two-dimensional mesh shape to at least partially collapse inside the lumen.