Means and structure for prevention of cross contamination during use of dental camera

• US 4,757,381 A
• Filed: 10/01/1987
• Issued: 07/12/1988
• Est. Priority Date: 03/05/1987
• Status: Expired due to Term

• Current Assignee: Fujinon Inc (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Optical Systems, Inc.
• Inventors: Cooper, David H., Bush, Charles S.
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US07/103,833
• Time in Patent Office: 285 Days
• Field of Search: 358/98, 358/229, 433/29, 433/30, 433/31, 128/4, 128/6, 128/132 D, 206/368, 206/369, 206/63.5, 206/69
• US Class Current: 348/66
• CPC Class Codes: A61B 1/00091 Nozzles
• CPC Class Codes: A61B 1/00142 with means for preventing contamination, e.g. by using a sanitary sheath
• CPC Class Codes: A61B 1/05 characterised by the image sensor, e.g. camera, being in the distal end portion
• CPC Class Codes: A61B 1/127 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: 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

A sheath is provided which prevents the dental camera itself from coming into contact with the patient, while allowing the dental camera to function properly. Such sheaths are dispensed on a perforated role, either end to end, or side to side. Alternatively, each sheath is individually packaged in a tear away casing, allowing the sheath to remain sterile, yet being readily accessible for use.

Claims

1. A dental camera sheath comprising:

an opening at a first end for entry and exit of a dental camera;

a distal end portion adapted to cover a camera head of said dental camera; and

a window portion of said distal portion, said window portion being substantially transparent over a camera lens of said camera head.

2. A dental camera sheath as in claim 1 wherein said window portion comprises optically transparent material.

3. A dental camera sheath as in claim 1 wherein that portion other than said window portion comprises flexible rubber or plastic material.

4. A dental camera sheath as in claim 1 which further comprises a fluid channel for directing fluid to or from said window portion.

5. Means for dispensing dental camera sheaths as in claim 1 comprising:

a plurality of said dental camera sheaths, each joined in a perforated relation along a longitudinal edge to an adjacent one of said dental camera sheaths.

6. Means for dispensing dental camera sheaths as in claim 1 comprising:

a plurality of said dental sheaths joined end to end in a perforated relation.

7. A dental camera sheath as in claim 1 further comprising packaging means housing said sheath in a sterile environment, said packaging means including two mating portions for enclosing said sheath within, each of said portions including a foldable flap for grasping and peeling apart said mating portions, thereby removing said sheath from said packaging means.

8. A dental camera sheath as in claim 1 which further comprises means for fixing said distal portion in tight, bonding relation to said camera head.

9. A dental camera sheath as in claim 8 wherein said means for fixing comprises an elastic band or clip.

10. A dental camera sheath as in claim 1 which further comprises means for fixing said first end.

11. A dental camera sheath as in claim 10 wherein said means for fixing comprises an elastic band or clip.

12. A dental camera sheath as in claim 1 wherein said distal portion is capable of being shrunk-fit to said camera head.

13. A dental camera sheath as in claim 12 wherein said distal portion is shrunk by the application of heat.

14. A dental camera sheath as in claim 1 which further comprises a shoe for covering said distal portion, thereby holding said distal portion in tight, bonding relation to said camera head.

15. A dental camera sheath as in claim 14 wherein said shoe is substantialy transparent above said camera lens.

16. A dental camera sheath as in claim 15 wherein said shoe comprises optically transparent material.

17. A dental camera for use in displaying an image from inside the mouth of a monitor comprising an electronic video endoscope having a shape like a dental mirror, said endoscope comprising:

a handle;

a camera head including a camera lens located at the distal end of said handle, said camera head being formed such that said camera lens is placed at an angle from the axis of said handle; and

a sheath covering said handle and camera head, said sheath being substantially transparent over said camera lens.

18. A dental camera as in claim 17 which further includes an insufflation/aspiration channel having at least one opening on a surface of said handle and camera head.

19. A dental camera as in claim 18 wherein said sheath is drawn to said handle and camera head in response to a vacuum applied to said channel.

20. A dental camera as in claim 18 wherein said sheath is pushed away from said handle and camera head in respsonse to a positive pressure applied to said channel.