Electronic video dental camera

• US 5,016,098 A
• Filed: 01/28/1988
• Issued: 05/14/1991
• Est. Priority Date: 03/05/1987
• Status: Expired due to Term

• Current Assignee: Fuji Photo Optical Co. Ltd (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Optical Systems, Inc.
• Inventors: Cooper, David H., Bush, Charles S.
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US07/149,521
• Time in Patent Office: 1,202 Days
• Field of Search: 358/98, 128/6, 128/776, 433/29-31
• US Class Current: 348/66
• CPC Class Codes: A61B 1/00091 Nozzles
• CPC Class Codes: A61B 1/00096 Optical elements
• CPC Class Codes: A61B 1/00101 the distal tip features being detachable
• CPC Class Codes: A61B 1/05 characterised by the image sensor, e.g. camera, being in the distal end portion
• CPC Class Codes: A61B 1/07 using light-conductive means, e.g. optical fibres
• CPC Class Codes: A61B 1/127 with means for preventing fogging A61B1/253 takes precedence
• CPC Class Codes: A61B 1/24 for the mouth, i.e. stomatoscopes, e.g. with tongue depressors tongue depressors per se A61B13/00; Instruments for opening or keeping open the mouth combined with saliva removers A61C17/00; mouth openers for animals A61D15/00
• CPC Class Codes: A61B 1/247 with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
• CPC Class Codes: A61B 2562/0238 Optical sensor arrangements for performing transmission measurements on body tissue
• CPC Class Codes: A61B 5/0088 for oral or dental tissue
• CPC Class Codes: A61C 1/08 Machine parts specially adapted for dentistry
• CPC Class Codes: H04N 23/555 for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
• CPC Class Codes: H04N 23/56 provided with illuminating means

Abstract

An electronic video dental camera is provided which overcomes the disadvantages of both prior art dental mirrors, endoscopes, and video endoscopes. The electronic video dental camera is readily manipulated by dentists who are familiar with the manipulation of dental mirrors. Such an electronic video dental camera includes a handle to be held the user, and a camera head located at the distal end of the handle, with the camera head being formed at an angle to the handle, as in prior art dental mirrors. One embodiment includes provision for the flow of a selected fluid in order to defog and/or clean the camera lens. In one embodiment, the camera head includes light sources for illuminating the area to be viewed. In one embodiment, the handle of the dental camera includes means for transporting all appropriate signals and fluids to and from the camera head, and, if desired, valves and switching means located on the handle for controlling such communication to the camera head. One embodiment includes a dental camera head which allows a number of attachments to be used, such as a telephoto lens, wide angle lens, relay lens, and transillumination devices. In an alternative embodiment, the dental camera is attached to another dental instrument, such as a dentist'"'"'s drill, thereby allowing video monitoring of the task being performed. In another embodiment, the dental camera is formed as an integral part of the dental instrument.

Claims

1. A dental camera for use in displaying an image from inside the mouth onto a monitor comprising an electronic video endoscope comprising:

a handle;

a camera head at the distal end of said handle including a means for receiving an image, said camera head being formed such that said means for receiving an image is placed at an angle from the axis of said handle, so as to enable viewing of substantially all areas of a patient'"'"'s teeth inside the mouth, including the distal, labial, buccal, and lingual aspects of the teeth; and

electronic circuitry contained within said handle.

2. A dental camera as in claim 1 wherein said means for receiving an image is selected from the group of mirrors, lenses, optical fibers, and filters.

3. A dental camera as in claim 1 which further comprises a light source for illuminating an area to be viewed.

4. A dental camera as in claim 3 which further comprises a filter in the path of the light from said light source.

5. A dental camera as in claim 3 wherein said filter is removably connected to said camera head.

6. A dental camera as in claim 1 wherein said camera head includes an image device and said electronic circuitry includes one or more drivers for controlling said image device or amplifiers for amplifying signals received from said image device.

7. A dental camera as in claim 6 which further comprises a filter located in the path of said received image.

8. A dental camera as in claim 7 wherein said filter is located between said means for receiving an image and said image device.

9. A dental camera as in claim 7 wherein said filter is removably connected to said camera head.

10. A dental camera as in claim 7 wherein said filter is an infrared filter.

11. A dental camera as in claim 1 which further comprises a camera lens which is removably connected to said camera head.

12. A dental camera as in claim 11 wherein said camera lens is selected from the group of camera lenses consisting of wide angle, telephoto, and relay lenses.

13. A dental camera as in claim 11 wherein said camera lens comprises an additional means for providing light toward the area being viewed by said camera head.

14. A dental camera as in claim 13 wherein said additional lens means comprises a transillumination device.

15. A dental camera as in claim 14 wherein said transillumination device comprises means for projecting light from said camera head, and said means for receiving an image receives said from the opposite side of the object being viewed.

16. A dental camera as in claim 15 which further comprises a filter in the path of the light from said light source.

17. A dental camera as in claim 15 which further comprises a filter located in the path of said received image.

18. A dental camera as in claim 17 wherein said filter is located between said means for receiving an image and said image device.

19. A dental camera as in claim 17 wherein said filter is an infrared filter.

20. A dental camera as in claim 14 wherein said transillumination device comprises means for illuminating the exterior of a tooth and means for receiving an image from within said tooth.

21. A dental camera as in claim 20 which further comprises a filter in the path of the light from said light source.

22. A dental camera as in claim 20 which further comprises a filter located in the path of said received image.

23. A dental camera as in claim 22 wherein said filter is located between said means for receiving an image and said image device.

24. A dental camera as in claim 22 wherein said filter is an infrared filter.