Device for obstruction removal with specific tip structure

• US 8,353,860 B2
• Filed: 09/30/2005
• Issued: 01/15/2013
• Est. Priority Date: 09/30/2004
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Boulais, Dennis R, Banik, Michael S, Turturro, Vincent, Rowland, Christopher, Hoffman, David W, O'Connor, John P, Couvillon, Lucien A Jr., Adams, Mark L, Shaw, William J, Hovey, Donald C, Maseda, Luis J, Brenner, Laurence D
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): OSINSKI, BRADLEY JAMES
• Application Number:
  US11/241,829
• Publication Number:
  US 20060173244A1
• Time in Patent Office: 2,664 Days
• Field of Search: 604/22, 604/27, 604/39, 604/43
• US Class Current: 604/43
• CPC Class Codes: A61B 1/00085 Baskets
• CPC Class Codes: A61B 1/00087 Tools A61B17/00234 takes precedence
• CPC Class Codes: A61B 1/00091 Nozzles
• CPC Class Codes: A61B 1/00094 Suction openings
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 1/05 characterised by the image sensor, e.g. camera, being in the distal end portion
• CPC Class Codes: A61B 1/0607 for annular illumination
• CPC Class Codes: A61B 1/0676 at distal tip of an endoscope
• CPC Class Codes: A61B 1/0684 using light emitting diodes [LED]
• CPC Class Codes: A61B 1/12 with cooling or rinsing arrangements
• CPC Class Codes: A61B 1/125 using fluid circuits
• CPC Class Codes: A61B 1/126 provided with means for cleaning in-use
• CPC Class Codes: A61B 1/31 for the rectum, e.g. proctoscopes, sigmoidoscopes , colonoscopes
• CPC Class Codes: A61B 2017/22092 Lubricant
• CPC Class Codes: A61B 2017/320775 Morcellators, impeller or propeller like means
• CPC Class Codes: A61M 1/774 Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
• CPC Class Codes: A61M 3/0202 with electronic control means or interfaces
• CPC Class Codes: A61M 3/0279 Cannula; Nozzles; Tips; their connection means
• CPC Class Codes: A61M 3/0283 with at least two inner passageways, a first one for irrigating and a second for evacuating suction-irrigation systems A61M1/77; aspiration tips with fluid supply means A61M1/85; for negative pressure wound therapy A61M1/92

Abstract

In one aspect, the present invention is a system for preparing a patient for an endoscopy procedure, such as a colonoscopy. The endoscopic preparation and examination system includes an endoscope, a source of irrigation and aspiration, and a control unit. The endoscope includes an elongated flexible shaft with a distal tip and a proximal end, at least one aspiration lumen and at least one irrigation lumen. A plurality of irrigation ports are functionally connected to the at least one irrigation lumen and a plurality of aspiration ports are functionally connected to the at least one aspiration lumen. In another aspect, the invention provides a method of clearing an obstructed view in a patient prior to, or during an endoscopic examination.

Claims

1. An endoscope system for clearing an obstruction in a patient, comprising:

an elongated flexible shaft with a proximal end, a distal tip terminating distally at a forward face and having a tapered portion with a narrowest point at the forward face and a widest point proximal to the narrowest point, at least one aspiration lumen, and at least one irrigation lumen;

wherein the shaft includes a plurality of irrigation ports functionally connected to the at least one irrigation lumen; and

a plurality of aspiration ports functionally connected to the at least one aspiration lumen, wherein the plurality of aspiration ports are positioned around the circumference of the shaft and extend into the distal tip such that the aspiration ports are at least partly open to the side of the shaft and at least partly open to the distal tip, wherein the aspiration ports each have an opening with an edge defining the entire distal circumference of the aspiration port, the edge having a first end situated proximal to the widest point of the tapered portion and a second end situated between the widest point of the tapered portion and the narrowest point of the tapered portion; and

wherein the at least one irrigation lumen is adapted to be connected to a source of irrigation and the at least one aspiration lumen is adapted to be connected to a source of aspiration at the proximal end of the shaft and wherein the sources are selectively controlled by a user input device to deliver an irrigant through the at least one irrigation lumen on the endoscope and to aspirate through the at least one aspiration lumen.

2. The endoscope system of claim 1, wherein at least one of the plurality of irrigation ports is located on the lateral surface of the longitudinal axis of the shaft.

3. The endoscope system of claim 1, wherein at least one of the plurality of irrigation ports is located on the distal tip of the shaft.

4. The endoscope system of claim 1, wherein the diameter of the at least one aspiration ports is at least twice the diameter of at least one of the irrigation ports.

5. The endoscope system of claim 1, wherein at least one of the plurality of irrigation ports is oval-shaped.

6. The endoscope system of claim 1, wherein at least one of the plurality of aspiration ports is oval-shaped.

7. The endoscope system of claim 1, further comprising an image sensor.

8. The endoscope system of claim 1, wherein the forward face is oriented perpendicular to the longitudinal axis of the endoscope.

9. The endoscope system of claim 8, wherein the image sensor is disposed on the forward face.

10. The endoscope system of claim 1, wherein the shaft is disposed of after a single use.

11. The endoscope system of claim 1, further comprising:

an excising device disposed within the aspiration lumen, wherein the excising device includes a macerator shaft and a plurality of elongated macerator blades that extend radially from the macerator shaft, the elongated macerator blades being capable of mechanically cutting and/or disrupting an obstruction in a patient into a liquefied form for aspiration through the aspiration lumen while the macerator blades are positioned entirely within the aspiration lumen.

12. The endoscope system of claim 11, wherein the excising device is extendible beyond the distal tip of the shaft.

13. The endoscope system of claim 11, wherein the excising device further includes an energy emitting device.

14. The endoscope system of claim 11, wherein the shaft is disposed of after a single use.

15. The endoscope system of claim 11, wherein only one end of each of the plurality of elongated macerator blades is attached to the macerator shaft.

16. The endoscope system of claim 11, wherein a distance between a distal end of the macerator shaft and each of the plurality of elongated macerator blades is the same.

17. The endoscope system of claim 1, wherein a distance between the distal end of the distal tip and each of the plurality of aspiration ports is the same.