Oral endoscope

Abstract

The present invention provides an oral endoscope that enables the prevention of typical contaminating particles reaching the surface of the shielding window during the pretreatment of a patient's biological hard tissue. [Solution] The oral endoscope includes a shielding window (6) located at the working end (101) of the housing, and an optical sensor (8) connected to a microprocessor is located inside the housing, in front of the shielding window (6). A backlight (5) is located inside the housing. The housing is connected by a tube to a compressed air supply source located outside the housing. The housing has an opening for supplying air to the outer surface of the shielding window. According to the present invention, a diffuser (7) is located inside the opening. The diffuser is adapted to generate an air jet that creates an air curtain, the air jet making an angle from 0° to 15° with respect to the plane of the shielding window and having an outflow velocity from 6 m / s to 50 m / s.

Claims

1. The housing (1) extends along its longitudinal axis and is equipped with an optically transparent shielding window (6) located at the working end (101) of the housing (1), and is designed to be placed inside the oral cavity. An optical sensor (8) connected to a microprocessor (4), which is positioned inside the housing (1) in front of the optically transparent shielding window (6), and the optically transparent shielding window (6) is adapted to shield the optical sensor (8), The housing (1) includes a backlight (5) disposed inside the housing, The housing (1) is connected via an air supply pipe (3) to a compressed air supply source located outside the housing (1) along the longitudinal axis. The working end (101) of the housing (1) is positioned along the longitudinal axis downstream of the airflow that flows into the housing (1) through the air supply pipe (3) relative to the optically transparent shielding window (6), and the working end (101) and the air supply pipe (3) are positioned opposite each other along the longitudinal axis. The backlight (5) is positioned along the longitudinal axis upstream of the airflow that flows into the housing (1) through the air supply pipe (3) relative to the optically transparent shielding window (6), The housing (1) is provided with an opening for supplying compressed air to the outer surface of the optically transparent shielding window (6), and the opening is in communication with the compressed air supply source via the air supply pipe (3). The diffuser (7) is located inside the opening and is designed to generate an air jet that forms an air curtain in front of the optically transparent shielding window (6). The diffuser (7) is further designed to generate the air jet such that its outflow velocity is in the range of 6 m / s to 50 m / s and is at an angle to the plane of the optically transparent shielding window (6), the angle being in the range of 0° to 15°, the plane of the optically transparent shielding window (6) being parallel to the longitudinal axis of the housing (1), and the diffuser (7) being located at the working end (101) of the housing (1). The diffuser (7) is designed to direct the air jet longitudinally toward the housing (1) along the outer surface of the optically transparent shielding window (6), away from the working end (101) of the housing (1), The oral endoscope is characterized in that the optically transparent shielding window (6) is located between the diffuser (7) and the backlight along the longitudinal axis.

2. The oral endoscope according to claim 1, wherein the air jet generated by the diffuser (7) is flattened.

3. The oral endoscope according to claim 1, wherein the optically transparent shielding window (6) is flat.

4. The oral endoscope according to claim 2, wherein the optically transparent shielding window (6) is flat.

5. Rigid frame (10), Anti-slip soft cover (11), Elastic retraction piece (12), and Fixing device (2) for the optical sensor (8), The oral endoscope according to claim 4, further comprising a rigid dental jaw wedge (9) having the following features.

6. The elastic retracting piece (12) is made of a ductile metal selected from (a) copper, (b) aluminum, and (c) steel. The oral endoscope according to claim 5, wherein the elastic retraction piece (12) can hold the mass of the oral endoscope at any position.

7. The oral endoscope according to claim 5, wherein the fixing device (2) is adapted to allow the housing (1) to rotate around the longitudinal axis.

8. The oral endoscope according to claim 6, wherein the fixing device (2) is adapted to allow the housing (1) to rotate around the longitudinal axis.

9. The microprocessor (4), the backlight, and the optical sensor (8) are heat-generating elements located inside the housing (1). The oral endoscope according to claim 8, wherein the air supply pipe (3), the heat-generating element, and the diffuser (7) are positioned relative to each other along the longitudinal axis such that an airflow enters the housing (1) through the air supply pipe (3) and passes through the inside of the housing (1) along the longitudinal axis, cooling all of these heat-generating elements.

10. The backlight comprises a light-emitting diode, The oral endoscope according to claim 9, wherein the optical sensor (8) is a digital camera.

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