Otoscope providing improved ear canal access

• US 9,326,668 B1
• Filed: 08/15/2014
• Issued: 05/03/2016
• Est. Priority Date: 08/15/2014
• Status: Active Grant

• Current Assignee: Wisconsin Alumni Research Foundation (University of Wisconsin System)
• Original Assignee: Wisconsin Alumni Research Foundation (University of Wisconsin System)
• Inventors: Berbee, James, Hamedani, Azita, Rebella, Greg
• Primary Examiner(s): Philogene, Pedro
• Assistant Examiner(s): Comstock, David C
• Application Number:
  US14/461,103
• Time in Patent Office: 627 Days
• Field of Search: 600/184, 600/185, 600/199, 600/200, 709/217
• US Class Current: 1/1
• CPC Class Codes: A61B 1/00032 internally powered
• CPC Class Codes: A61B 1/00052 positioned at proximal end of the endoscope body
• CPC Class Codes: A61B 1/00112 Connection or coupling means
• CPC Class Codes: A61B 1/00128 mechanical, e.g. for tubes or pipes
• CPC Class Codes: A61B 1/0052 Constructional details of control elements, e.g. handles
• CPC Class Codes: A61B 1/051 Details of CCD assembly
• 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 1/227 for ears, i.e. otoscopes

Abstract

An otoscope provides an extremely narrow tip holding an electronic camera sized to allow the space of the ear canal to be shared between the otoscope and a tool such as a curette for removing foreign objects. The tip may be flexible for increased patient comfort when using a compact tip design.

Claims

1. An otoscope comprising:

a housing providing a head portion and a grip portion, the grip portion adapted to be supported by a hand of a healthcare professional when the head portion is in an inspection position adjacent to an outer ear of an average patient;

an elongate probe element having a proximal end supported by the head portion of the housing so that a distal end of the elongate probe element may extend along an axis into the ear canal of the outer ear in the inspection position; and

an electronic camera supported by the elongate probe element for viewing into the ear canal when the distal end of the probe element is in the inspection position in the ear canal;

wherein the elongate probe element is sized to be inserted into the ear canal for inspection of the ear canal without blocking the ear canal to access by other instruments within the ear canal and passing by the probe element as so inserted; and

wherein the camera is positioned at a distal end of the elongate probe element and including conductors communicating between the distal end of the elongate probe element and a proximal end of the elongate probe element.

2. The otoscope of claim 1 wherein the elongate probe element includes a distal portion of maximum diameter less than an average diameter of the patient'"'"'s ear canal for a length of at least one half the length of the patient'"'"'s ear canal.

3. The otoscope of claim 2 wherein the maximum diameter is less than four millimeters.

4. The otoscope of claim 3 wherein the maximum diameter is less than 2.5 millimeters.

5. The otoscope of claim 2 wherein the length is at least one centimeter.

6. The otoscope of claim 5 wherein the distal portion of constant diameter has a length of at least two centimeters.

7. The otoscope of claim 1 wherein a distal portion of the elongate probe element is flexible to flex with contact against the ear canal.

8. The otoscope of claim 7 wherein the elongate probe element provides a flexure of a distal end at least one millimeter with an oblique force of less than 100 grams when the proximal end is stationary.

9. The otoscope of claim 7 wherein the elongate probe element provides a substantially rigid proximal portion providing less flexibility than the distal portion comprising at least one third a length of the elongate probe element.

10. The otoscope of claim 7 wherein the distal portion is a flexible member extending slidably and coaxially through a substantially rigid proximal portion.

11. The otoscope of claim 7 further including at least one LED supported at the distal end of the probe adjacent to the camera and directing light along the axis.

12. The otoscope of claim 1 further including a retraction mechanism for controlling an amount of extension and retraction of the elongate probe element along the axis with respect to the housing.

13. The otoscope of claim 1 wherein the elongate probe element includes a breakaway electrical connector connecting conductors within the elongate probe element to circuitry within the housing, the breakaway electrical conductor providing a reversible separation of connector portions at a predetermined oblique force.

14. The otoscope of claim 1 wherein the head portion includes at least one passageway extending substantially parallel to the axis to a side of the axis allowing insertion of tools through the head portion into the ear canal when the probe portion is within the ear canal.

15. The otoscope of claim 1 wherein the head portion supports the elongate probe element through a rotating coupling allowing rotation of the elongate probe element about the axis with respect to the head portion.

16. The otoscope of claim 1 wherein the grip portion extends substantially perpendicular to the axis of the probe.

17. The otoscope of claim 1 wherein the head portion includes an electronic display communicating with the camera portion for displaying an image from the camera.

18. The otoscope of claim 17 wherein the head portion includes at least one passageway extending substantially parallel to the axis to a side of the axis allowing insertion of tools through the head portion into the ear canal when the probe portion is within the ear canal and wherein the display is displaceably mounted on the housing to be moved from covering the passageway to uncovering the passageway.

19. The otoscope of claim 1 wherein housing holds a battery communicating electrical power to the camera.