CA2464091A1 - Miniature endoscope with imaging fiber system - Google Patents

Miniature endoscope with imaging fiber system Download PDF

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Publication number
CA2464091A1
CA2464091A1 CA002464091A CA2464091A CA2464091A1 CA 2464091 A1 CA2464091 A1 CA 2464091A1 CA 002464091 A CA002464091 A CA 002464091A CA 2464091 A CA2464091 A CA 2464091A CA 2464091 A1 CA2464091 A1 CA 2464091A1
Authority
CA
Canada
Prior art keywords
endoscope
waveguide
lens
distal end
fiber optic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002464091A
Other languages
French (fr)
Other versions
CA2464091C (en
Inventor
Paul Remijan
James E. Mcdonald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VISIONSCOPE TECHNOLOGIES LLC
Original Assignee
Visionscope, Inc.
Paul Remijan
James E. Mcdonald
Visionscope, Llc
Visionscope Technologies Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Visionscope, Inc., Paul Remijan, James E. Mcdonald, Visionscope, Llc, Visionscope Technologies Llc filed Critical Visionscope, Inc.
Priority to CA2748436A priority Critical patent/CA2748436C/en
Publication of CA2464091A1 publication Critical patent/CA2464091A1/en
Application granted granted Critical
Publication of CA2464091C publication Critical patent/CA2464091C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/042—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by a proximal camera, e.g. a CCD camera
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00131—Accessories for endoscopes
    • A61B1/00135—Oversleeves mounted on the endoscope prior to insertion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00142—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with means for preventing contamination, e.g. by using a sanitary sheath
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00163—Optical arrangements
    • A61B1/00165—Optical arrangements with light-conductive means, e.g. fibre optics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00163—Optical arrangements
    • A61B1/00165—Optical arrangements with light-conductive means, e.g. fibre optics
    • A61B1/00167—Details of optical fibre bundles, e.g. shape or fibre distribution
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/015—Control of fluid supply or evacuation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0607—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements for annular illumination
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2407—Optical details
    • G02B23/2461—Illumination
    • G02B23/2469—Illumination using optical fibres
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2476—Non-optical details, e.g. housings, mountings, supports
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0087—Simple or compound lenses with index gradient

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Surgical Instruments (AREA)

Abstract

An endoscope has a fiber optic waveguide that transmits an image from a distal end to a proximal end, the waveguide having an outer diameter of less than 3 mm. A lens system is positioned at the distal end of the fiber optic waveguide. An imaging device is optically coupled to the proximal end of fiber optic waveguide. A disposable sheath extends about the fiber optic waveguide to provide a sterile barrier, and in a preferred embodiment the sheath includes an illumination channel. In a preferred embodiment, the lens system has a first lens element, a second lens element and an aperture stop.

Claims (40)

1. An endoscope comprising:
a fiber optic waveguide that transmits an image from a distal end to a proximal end, the waveguide having an outer diameter of less than 3 mm;
a lens positioned at the distal end of the fiber optic waveguide;
an imaging device optically coupled to the proximal end of the fiber optic waveguide; and a sheath extending about the fiber optic waveguide, the sheath including an illumination channel.
2. The endoscope of claim 1 wherein the lens comprises a first lens element, a second lens element and an aperture stop.
3. The endoscope of claim 1 wherein the lens couples light at any position on a distal surface of the lens to a plurality of optical fibers in the waveguide such that the numerical aperture of light entering each fiber from a position varies as a function of angle.
4. The endoscope of claim 1 wherein the fiber optic waveguide comprises a plurality of graded index optical fibers having different numerical apertures.
5. The endoscope of claim 1 wherein the illumination channel comprises an annular channel surrounding the waveguide.
6. The endoscope of claim 1 further comprising a control unit having an input that connects to an electrical cable from the imaging device, a light source, an image processor and a memory.
7. The endoscope of claim 6 wherein the control unit has a recording device and a fiber optic connection between the light source and an illumination channel in the endoscope.
8. The endoscope of claim 5 wherein the annular channel comprises a plurality of optical fibers.
9. The endoscope of claim 1 further comprising a handle, the sheath extending around the handle and connected to a distal end of the handle.
10. An endoscope comprising:
a fiber optic waveguide that transmits an image, the waveguide having a diameter of less than 2 millimeters;
an optical system coupled to a distal end of the waveguide;
a lens system optically coupled to a proximal end of the waveguide;
an imaging device that receives an image from the fiber optic waveguide; and a disposable sheath extending over the optical waveguide.
11. The endoscope of claim 10 wherein the fiber optic waveguide is plurality of optical fibers.
12. The endoscope of claim 10 wherein the waveguide has at least 3000 imaging fibers.
13. The endoscope of claim 10 wherein the optical system at the distal end of the waveguide is an achromatic lens system including an aperture stop.
14. The endoscope of claim 13 wherein a numerical aperture of the lens system is correllated to the waveguide.
15. The endoscope of claim 10 wherein the disposable sheath has a window over the distal end.
16. The endoscope of claim 10 wherein the disposable sheath has a lens at the distal end.
17. The endoscope of claim 10 wherein the optical system is non-telecentric and includes a first lens element, a second lens element and an aperture stop.
18. The endoscope of claim 10 wherein the disposable sheath transmits light to the distal end of the endoscope.
19. The endoscope of claim 10 further comprising an annular illumination channel encircling the optical waveguide fiber for transmitting the light and the sheath having a single sealed outer tube.
20. The endoscope of claim 10 wherein the disposable sheath has a tube for passing a tool to the distal end of the endoscope.
21. The endoscope of claim 10 further comprising a working channel.
22. The endoscope of claim 10 wherein the sheath comprises an illumination fiber optic system coupled to a light source through a handle.
23. The endoscope of claim 10 wherein an illumination fiber extending through the sheath is coupled to a light source with a connector.
24. The endoscope of claim 10 wherein the imaging device is connected to an image processor.
25. A method of assembling an endoscope comprising:
providing a handle connected to a fiber optic waveguide that transmits an image from a distal end to a proximal end, the waveguide having an outer diameter of less than 3 mm, a sheath extending about the fiber optic waveguide;
providing a lens positioned at the distal end of the fiber optic waveguide;
providing an imaging device optically coupled to the proximal end of the fiber optic waveguide; and connecting the imaging device to a control unit with a cable.
26. The method of claim 25 wherein the step of providing a lens comprises providing a first lens element, a second lens element and an aperture stop.
27. The method of claim 25 further comprising coupling light at any position on a distal surface of the lens to a plurality of optical fibers in the waveguide such that the numerical aperture of light entering each fiber from a position varies as a function of angle.
28. The method of claim 25 wherein the fiber optic waveguide is plurality of optical fiber.
29. The method of claim 25 wherein the waveguide has at least 3000 imaging fibers.
30. The method of claim 25 wherein the optical lens at the distal end of the waveguide is an achromatic lens system including an aperture stop.
31. The method of claim 25 further comprising connecting a disposable sheath having a window at the distal end to a distal end of the handle.
32. The method of claim 31 wherein the disposable sheath has a lens at the distal end.
33. The method of claim 27 further comprising an optical system including the lens at the distal end of the waveguide, the system being non-telecentric and including a first lens element, a second lens element and an aperture stop.
34. The method of claim 25 further comprising an annular illumination channel encircling the optical waveguide fiber for transmitting the light and the sheath having a single sealed outer tube.
35. The method of claim 31 wherein the disposable sheath has a tube for passing a tool to the distal end of the endoscope.
36. The method of claim 25 further comprising a working channel.
37. The method of claim 25 wherein the sheath comprises an illumination fiber optic system coupled to a light source through the handle, the handle including a charge coupled device and a plurality of lens.
38. The method of claim 25 wherein an illumination fiber extending through the sheath is coupled to a light source in the control unit with a connector.
39. The method of claim 25 wherein the imaging device is connected to an image processor in the control unit.
40. The method of claim 25 wherein the handle includes a connecting hub that connects to a mounting device on the sheath, the device having a sleeve providing a sterile barrier extending about the handle, the device being connectable to a cannula having a luer and a removable trocar.
CA2464091A 2001-10-19 2002-10-18 Miniature endoscope with imaging fiber system Expired - Fee Related CA2464091C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2748436A CA2748436C (en) 2001-10-19 2002-10-18 Miniature endoscope with imaging fiber system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/042,126 2001-10-19
US10/042,126 US6863651B2 (en) 2001-10-19 2001-10-19 Miniature endoscope with imaging fiber system
PCT/US2002/033336 WO2003034905A2 (en) 2001-10-19 2002-10-18 Miniature endoscope with imaging fiber system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2748436A Division CA2748436C (en) 2001-10-19 2002-10-18 Miniature endoscope with imaging fiber system

Publications (2)

Publication Number Publication Date
CA2464091A1 true CA2464091A1 (en) 2003-05-01
CA2464091C CA2464091C (en) 2011-12-06

Family

ID=21920183

Family Applications (2)

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CA2748436A Expired - Fee Related CA2748436C (en) 2001-10-19 2002-10-18 Miniature endoscope with imaging fiber system
CA2464091A Expired - Fee Related CA2464091C (en) 2001-10-19 2002-10-18 Miniature endoscope with imaging fiber system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
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Country Status (8)

Country Link
US (4) US6863651B2 (en)
EP (3) EP2103248B1 (en)
JP (2) JP4831933B2 (en)
AT (1) ATE450188T1 (en)
CA (2) CA2748436C (en)
DE (1) DE60234647D1 (en)
ES (1) ES2336774T3 (en)
WO (1) WO2003034905A2 (en)

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CA2464091C (en) 2011-12-06
US20120071721A1 (en) 2012-03-22
US20180220878A1 (en) 2018-08-09
WO2003034905A3 (en) 2003-06-05
ATE450188T1 (en) 2009-12-15
CA2748436C (en) 2014-02-25
US7942814B2 (en) 2011-05-17
US20030083552A1 (en) 2003-05-01
CA2748436A1 (en) 2003-05-01
JP2005506865A (en) 2005-03-10
JP2011104383A (en) 2011-06-02
EP1478264B1 (en) 2009-12-02
EP2676598A3 (en) 2014-08-13
US20060015014A1 (en) 2006-01-19
EP2103248A2 (en) 2009-09-23
EP2103248A3 (en) 2009-10-07
EP2676598A2 (en) 2013-12-25
US6863651B2 (en) 2005-03-08
EP2103248B1 (en) 2015-09-30
ES2336774T3 (en) 2010-04-16
WO2003034905A2 (en) 2003-05-01
JP4831933B2 (en) 2011-12-07
DE60234647D1 (en) 2010-01-14
EP1478264A2 (en) 2004-11-24

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