Fiber optic ocular endoscope

• US 4,607,622 A
• Filed: 04/11/1985
• Issued: 08/26/1986
• Est. Priority Date: 04/11/1985
• Status: Expired due to Fees

• Current Assignee: Charles D. Fritch
• Original Assignee: Charles D. Fritch
• Inventors: McAdams, John B., Fritch, Charles D.
• Primary Examiner(s): Grieb, William H.
• Application Number:
  US06/722,839
• Time in Patent Office: 502 Days
• Field of Search: 128/3, 128/4, 128/5, 128/6, 128/7
• US Class Current: 600/108
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: A61B 1/317 for bones or joints, e.g. osteoscopes, arthroscopes
• CPC Class Codes: A61B 2017/22072 with an instrument channel, e.g. for replacing one instrument by the other
• CPC Class Codes: A61B 2018/00982 combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
• CPC Class Codes: A61B 2090/306 using optical fibres
• CPC Class Codes: A61F 9/008 using laser
• CPC Class Codes: A61F 9/009 Auxiliary devices making contact with the eyeball and coupling in laser light, e.g. goniolenses apparatus for eye examination A61B3/0008
• CPC Class Codes: A61F 9/022 Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs optical filters per se G02B5/20

Abstract

An ocular endoscope having a minimum cross-section and designed primarily for use in treating, diagnosing and investigating problems associated with the eye. The probe associated with the endoscope comprises a first bundle of fiber optics carrying light for illumination, a second coaxial bundle of fiber optics terminating in a lens and adapted to view areas being illuminated completely surrounded by a plastic sheath that is semi-rigid and malleable and capable of assuming and holding a preferred shape. In the preferred embodiment a cross-sectional area is elliptical and the sheath contains a port in the area of maximum curvature, which port is adapted to receive a probe. The probe is preferably malleable and may be hollow for accepting instruments or fiber optics connected to an external source of coherent light in the form of a laser for treating purposes.

Claims

1. An ocular endoscope comprising:

a first bundle of fiber optics adapted to be connected to a light source at one end for conducting and projecting light to selected areas at the other end,

a second bundle of fiber optics coaxial with said first bundle and adapted to be connected to a display device at one end and a lens at the other end for viewing said areas illuminated by said first bundle, and

a semi-rigid malleable flexible sheath encompassing said first bundle and said second bundle, said sheath, said first bundle and said second bundle of fiber optics having a cross-section approximating that of an ellipse whereby insertion of the probe is facilitated by conforming to the shape of the incision and risk of infection is minimized.

15. An ocular endoscope according to claims 1, 2 or 7 in which said display device is a television monitor.

2. An ocular endoscope comprising:

a first bundle of fiber optics adapted to be connected to a light source at one end for conducting and projecting light to selected areas at the other end,

a second bundle of fiber optics coaxial with said first bundle and adapted to be connected to a display device at one end and a lens at the other end for viewing said areas illuminated by said first bundle,

a conduit located coaxial with said first and second bundle and adapted to receive an external probe, and

a sheath encompassing said first bundle, said second bundle and said conduit in a flexible arrangement and having an elliptical cross-section.

3. An ocular endoscope according to claim 2 which includes a malleable probe inserted in said conduit whereby the external form and shape of said sheath can be formed to any desired shape.

4. An ocular endoscope according to claim 2 in which said conduit is located in a portion of said sheath.

5. An ocular endoscope according to claim 4 in which said conduit is located at the point of greatest curvature of said sheath.

6. An ocular endoscope according to claim 2 in which said sheath is constructed of plastic.

7. An ocular endoscope comprising:

a first bundle of fiber optics adapted to be connected to a light source at one end for conducting and projecting light to selected areas at the other end,

a second bundle of fiber optics coaxial with said first bundle and adapted to be connected to a display device at one end and a lens at the other end for viewing said areas illuminated by said first bundle,

a conduit located coaxial with said first and second bundle,

a sheath encompassing said first bundle, said second bundle and said conduit in a flexible arrangement, and

a semi-rigid malleable probe capable of assuming and holding any desired shape and adapted to be inserted in said conduit whereby said sheath is made to conform to the shape of said probe.

8. An ocular endoscope according to claim 7 in which said sheath holding said first bundle, said second bundle and said conduit has an elliptical cross-section.

9. An ocular endoscope according to claim 7 in which said conduit is located in said sheath.

10. An ocular endoscope according to claim 9 in which said conduit is located in a portion of said sheath having the greatest curvature.

11. An ocular endoscope according to claim 7 in which said probe is hollow and adapted to receive diagnostic testing and treating devices.

12. An ocular endoscope according to claim 11 in which said hollow probe contains a bundle of fiber optics connected to a laser source for treating said illuminated areas.

13. An ocular endoscope according to claim 7 in which said second bundle of fiber optics terminates at a lens at the display device end.

14. An ocular endoscope according to claim 12 in which said display device includes a television vidicon camera focused on said lens and feeding a video signal to a television monitor for viewing said area illuminated by said first bundle.