Handpiece with built-in camera and dental treatment method using handpiece

• US 9,930,294 B2
• Filed: 08/30/2013
• Issued: 03/27/2018
• Est. Priority Date: 08/31/2012
• Status: Active Grant

• Current Assignee: The Yoshida Dental Mfg. Co., Ltd.
• Original Assignee: The Yoshida Dental Mfg. Co., Ltd.
• Inventors: Hasegawa, Takeshi, Yamanaka, Michizo
• Primary Examiner(s): Patel, Jay
• Assistant Examiner(s): SUH, JOSEPH JINWOO
• Application Number:
  US14/424,525
• Publication Number:
  US 20150222856A1
• Time in Patent Office: 1,670 Days
• CPC Class Codes: A61B 1/00 Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes examination of body cavities or body tracts using ultrasonic, sonic or infrasonic waves A61B8/12; endoscopic instruments for taking cell samples or for biopsy A61B10/04; for surgical purposes A61B17/00; endoscopic surgical cutting instruments A61B17/32; surgical instruments using a laser beam being directed along or through a flexible conduit A61B18/22; Illuminating arrangements therefor for the eyes A61B3/00
• CPC Class Codes: A61B 1/00165 with light-conductive means, e.g. fibre optics A61B1/07 takes precedence
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• 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 1/24 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: A61C 1/05 with turbine drive
• CPC Class Codes: A61C 1/08 Machine parts specially adapted for dentistry
• CPC Class Codes: G02B 13/0015 characterised by the lens design
• CPC Class Codes: G06T 2207/30036 Dental; Teeth
• CPC Class Codes: G06T 7/0012 Biomedical image inspection
• CPC Class Codes: H04N 23/51 Housings
• CPC Class Codes: H04N 5/44 Receiver circuitry for the reception of television signals according to analogue transmission standards H04N5/14 takes precedence
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

A handpiece with a built-camera includes a micromotor-driven handpiece body which includes a cutting tool attached to a head portion thereof, a light receiving port at a position near the cutting tool, a grip portion detachably connected to the handpiece body and a color camera module which is stored inside the handpiece body. The handpiece with the built-in camera further includes an objective lens which faces the light receiving port and a rod fiber which is attached to an inner wall portion of the handpiece body with an incidence end of the rod fiber facing the objective lens and an exit end of the rod fiber facing a condensing lens unit.

Claims

1. A handpiece with a built-in camera comprising:

a micromotor-driven handpiece body which includes a cutting tool attached to a head portion thereof, and a light receiving port provided at a position within a first threshold distance from the cutting tool;

a grip portion which is detachably connected to the handpiece body; and

a color camera module which is stored inside the handpiece body,

wherein the color camera module comprises a camera unit having a condensing lens unit and a color image sensor that outputs a color image signal, and an arbitrary number of LEDs which are circularly arranged around a periphery of the camera unit, and the color camera module is attached to an inner wall portion of the handpiece body within a second threshold distance from the grip portion;

and the handpiece with the built-in camera further comprising;

an objective lens which faces the light receiving port provided in the head portion, and a rod fiber which is attached to the inner wall portion of the handpiece body with an incidence end of the rod fiber facing the objective lens with a predetermined interval therebetween and an exit end of the rod fiber facing the condensing lens unit with a predetermined interval therebetween, and

a photographing optical system which transmits imaging light of an affected area to the camera unit via the objective lens and the rod fiber.

2. The handpiece with a built-in camera according to claim 1,

wherein the interval between the objective lens and the incidence end of the rod fiber is configured to allow photographing light from the objective lens to be substantially received by a light receiving angle of the rod fiber, and the interval between the exit end of the rod fiber and the condensing lens unit is configured to allow light that exits from the rod fiber to be substantially received by the viewing angle of the condensing lens unit.

3. The handpiece with a built-in camera according to claim 1, further comprising:

an anti-fogging mechanism which blows air toward a region of the light receiving port for anti-fogging of the light receiving port.

4. The handpiece with a built-in camera according to claim 1, further comprising:

an anti-fogging mechanism which blows air toward a front side of the light receiving port and secures visibility to imaging light that is incident onto the light receiving port due to an air curtain effect.

5. The handpiece with a built-in camera according to claim 1,

wherein the condensing lens unit has a focus range set to 3 to 50 mm.

6. The handpiece with a built-in camera according to claim 1, further comprising:

an anti-fogging mechanism which blows air toward a region of the light receiving port for anti-fogging of the light receiving port.

7. The handpiece with a built-in camera according to claim 1, further comprising:

a wireless communication system for allowing an image signal imaged by the camera unit to be wirelessly communicated with the outside.

8. A treatment method by a handpiece with a built-in camera, comprising:

performing a treatment while viewing a clear color image of a treatment site by using the handpiece with a built-in camera according to claim 1.

9. A handpiece with a built-in camera comprising:

an air turbine-driven handpiece body which includes a cutting tool attached to a head portion thereof, and a light receiving port provided at a position within a first threshold distance from the cutting tool;

a grip portion which is detachably connected to the handpiece body; and

a color camera module which is stored inside the handpiece body,

wherein the color camera module includes a camera unit having a condensing lens unit and a color image sensor that outputs a color image signal, and an arbitrary number of LEDs which are circularly arranged around a periphery of the camera unit, and the color camera module is disposed at a center portion of the handpiece body;

and the handpiece with the built-in camera further comprising;

an objective lens which faces the light receiving port provided in the head portion, and a rod fiber which is disposed in the handpiece body with an incidence end of the rod fiber facing the objective lens with a predetermined interval therebetween and an exit end of the rod fiber facing the condensing lens unit with a predetermined interval therebetween, and

a photographing optical system which transmits imaging light of an affected area to the camera unit via the objective lens and the rod fiber.

10. The handpiece with a built-in camera according to claim 9,

wherein the condensing lens unit has a focus range set to 3 to 50 mm.

11. The handpiece with a built-in camera according to claim 9,

wherein the interval between the objective lens and the incidence end of the rod fiber is configured to allow photographing light from the objective lens to be substantially received by a light receiving angle of the rod fiber, and the interval between the exit end of the rod fiber and the condensing lens unit is configured to allow light that exits from the rod fiber to be substantially received by the viewing angle of the condensing lens unit.

12. The handpiece with a built-in camera according to claim 9, further comprising:

an anti-fogging mechanism which blows air toward a region of the light receiving port for anti-fogging of the light receiving port.

13. The handpiece with a built-in camera according to claim 9, further comprising:

an anti-fogging mechanism which blows air toward a front side of the light receiving port and secures visibility to imaging light that is incident onto the light receiving port due to an air curtain effect.

14. The handpiece with a built-in camera according to claim 9, further comprising:

a wireless communication system for allowing an image signal imaged by the camera unit to be wirelessly communicated with the outside.

15. A treatment method by a handpiece with a built-in camera, comprising:

performing a treatment while viewing a clear color image of a treatment site by using the handpiece with a built-in camera according to claim 9.