Medical light source device

• US 9,062,833 B2
• Filed: 05/23/2012
• Issued: 06/23/2015
• Est. Priority Date: 12/06/2011
• Status: Active Grant

• Current Assignee: Acp Japan Co., Ltd., Shoichi Nakamura
• Original Assignee: Acp Japan Co., Ltd., Shoichi Nakamura
• Inventors: Nakamura, Shoichi
• Primary Examiner(s): CARIASO, ALAN B
• Application Number:
  US13/983,246
• Publication Number:
  US 20130314903A1
• Time in Patent Office: 1,126 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2090/309 using white LEDs
• CPC Class Codes: A61B 2090/363 Use of fiducial points
• CPC Class Codes: F04C 2270/041 Controlled or regulated
• CPC Class Codes: F21L 4/00 Electric lighting devices with self-contained electric batteries or cells
• CPC Class Codes: F21V 21/084 Head fittings
• CPC Class Codes: F21V 23/003 the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
• CPC Class Codes: F21V 23/008 the casing being outside the housing of the lighting device
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• CPC Class Codes: F21V 23/0492 the sensor detecting a change in orientation, a movement or an acceleration of the lighting device, e.g. a tilt switch
• CPC Class Codes: F21W 2131/20 Lighting for medical use
• CPC Class Codes: F21W 2131/202 for dentistry
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/56 involving measures to prevent abnormal temperature of the LEDs
• CPC Class Codes: H05B 47/105 in response to determined parameters
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A medical light source device worn on the body of an operator enables the application range to be set at a state displaced from the direction in which the body currently faces. An acceleration sensor 106 is attached to a holder 7 to put an illumination section 1 on the body of the operator, and detects a motion of the body of the operator. When an application-range center position setting switch 107b is operated, a position detecting section 108 detects a center position based on the acceleration information detected by the acceleration sensor 106, and an optical axis adjusting section 108 fixes the optical axis of the illumination section 1 to the detected center position. Then, the application angle of application light from the illumination section 1 is capable of being adjusted in a plurality of stages by an application control section 110.

Claims

1. A medical light source device that is worn on the body of an operator to apply light to a target portion of the medical treatment, comprising:

a holder to put an illumination section on the body of the operator;

an acceleration sensor attached to the holder;

a position detecting section that detects a center position to hold based on acceleration information detected by the acceleration sensor in setting the center position of an application range; and

an optical axis adjusting section that sets an optical axis of the illumination section at the detected center position.

2. The medical light source device according to claim 1, further comprising:

an application control section capable of adjusting an application angle of application light from the illumination section in a plurality of stages.

3. The medical light source device according to claim 1, wherein the holder is to put the illumination section and the acceleration sensor on the head of the operator.

4. The medial light source device according to claim 1, wherein the acceleration sensor has an X axis and a Y axis that are mutually orthogonal, and is attached to the holder so that the X axis tracks a right-and-left axis of the operator and that the Y axis tracks a back-and-forth axis of the operator.

5. The medical light source device according to claim 4, wherein the acceleration sensor is attached to the holder while being beforehand provided with a predetermine angle with respect to a vertical direction.

6. The medial light source device according to claim 4, wherein the acceleration sensor is a three-axis sensor further including a Z axis.

7. The medical light source device according to claim 1, further comprising:

reset means for clearing the center position held in the position detecting sensor to cancel setting of the optical axis.

8. A medical light source device that is worn on the body of an operator to apply light to a target portion of the medical treatment, comprising:

a holder to put an illumination section on the body of the operator;

a battery power supply section that supplies power to the illumination section;

an acceleration sensor attached to the holder;

a motion detecting section that detects a predetermined motion by the operator based on acceleration information; and

a light quantity control section that controls an amount of current fed from the battery power supply section to the illumination section when the predetermined motion is detected.

9. The medical light source device according to claim 8, wherein the illumination section is provided with a light source having durability even when a passing current exceeds a rated value, and the light quantity control section changes an average current value fed from the battery power supply section to the illumination section from a rated value to an increase value higher than the rated value only for a predetermined period in increasing the amount of current.

10. The medical light source device according to claim 9, wherein the predetermined period is set based on a temperature increase time characteristic of the light source due to passage of the increase value of current.

11. The medical light source device according to claim 9, wherein the predetermined period is set at a period during which a temperature of the light source does not exceed a maximum allowable value, based on the temperature increase time characteristic of the light source.

12. The medical light source device according to claim 9, wherein a second acceleration sensor is attached to the holder, and the light quantity control section switches a value of current fed to the illumination section to the rated value of current when the acceleration sensor detects acceleration of a predetermined value or more, in performing control for feeding the increase value of current as the average current value fed to the illumination section.

13. The medical light source device according to claim 8, further comprising:

a voice recognition section that recognizes a voice uttered by the operator,

wherein the light quantity control section controls the amount of current fed to the illumination section based on either the recognized voice in the voice recognition section or the acceleration information.