# US 5,347,994 A · Endoscope light source apparatus with setting enable and disable modes

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- Number: US 5,347,994 A
- Document ID: US5347994A
- Status: Granted
- Kind: A
- Application number: 07/903,576
- Filed: 1992-06-24
- Granted: 1994-09-20
- Earliest claimed: 1991-06-27
- Assignees: Asahi Kogaku Kogyo Kabushiki Kaisha
- Inventors: Tadashi Takahashi; Katsuhiko Furuya
- Web page: https://patentgrep.com/patent/US5347994A

## CPC

- A61B 1/0669: {at proximal end of an endoscope}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A light source apparatus for an endoscope having a light source for supplying illuminating light to the endoscope. The light source apparatus includes a setting control device operable from the outside of the light source apparatus to make or change the setting of the light source apparatus. An operation mode changeover device is provided that is operable from the outside of the light source apparatus to change over a mode, wherein the setting can be made or changed by operating the setting control device, to a mode, wherein the setting cannot be made or changed, even if the setting control device is operated.

## Claims

### Claim 1

A light source apparatus for an endoscope having a light source for supplying illuminating light to said endoscope, said light source apparatus comprising:
setting control means operable from the outside of said light source apparatus for making or changing a setting of said light source apparatus;
operation mode changeover means operable from outside of said light source apparatus for switching from a first mode, wherein said first mode allows said setting control means to operate, to a second mode, wherein said second mode prevents said setting control means from operating; and
said operation changeover means including a plurality of switches provided on said light source apparatus, and further including means for determining when said switches are operated in a specific combination such that said first and second modes are changed over from one to another.

### Claim 2 (depends on 1)

A light source apparatus according to claim 1, wherein said plurality of switches are of a pushbutton type, and wherein said specific combination is a specific sequence within a specific time.

### Claim 3 (depends on 1)

A light source apparatus according to claim 1, wherein said setting control means further comprises means for effecting automatic exposure photography through the endoscope.

### Claim 4 (depends on 3)

A light source apparatus according to claim 3, wherein said setting includes a setting of a condition concerned with the automatic exposure photography.

### Claim 5 (depends on 4)

A light source apparatus according to claim 4, wherein the setting includes a setting of a kind of endoscope used, a kind of photographic adapter attached to said endoscope and a sensitivity of a film used for photography.

### Claim 6 (depends on 4)

A light source apparatus according to claim 4, wherein said setting includes a setting of a combination of a kind of endoscope used, a kind of photographic adapter attached to the endoscope, a sensitivity of a film used for photography, and a setting of an exposure index for said combination.

### Claim 7 (depends on 1)

A light source apparatus according to claim 1, wherein said setting includes a setting of a brightness of illuminating light supplied from said light source to the endoscope.

### Claim 8 (depends on 4)

A light source apparatus according to claim 4, wherein said setting includes a setting of an exposure index used to effect automatic exposure photography through the endoscope.