IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0603695
(1984-04-25)
|
우선권정보 |
JP-0077327 (1983-04-30) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
12 인용 특허 :
5 |
초록
▼
A liquid supplying device has a housing with a connecting portion to which a connector of an endoscope is connected. A lamp, an air pump and a liquid supply tank are arranged in the housing. The pump is connected to the connecting portion and the tank through a pipe. The tank is connected to the con
A liquid supplying device has a housing with a connecting portion to which a connector of an endoscope is connected. A lamp, an air pump and a liquid supply tank are arranged in the housing. The pump is connected to the connecting portion and the tank through a pipe. The tank is connected to the connecting portion through a pipe. A switching mechanism is connected to the pipes. A selector valve is connected to the pipe at a position between the pump and the tank. A control circuit is connected to the lamp and pump, and a light source switch is connected to the control circuit. When the switch is closed, the circuit drives the lamp and pump and switches the selector valve to a first position for blocking the pipe, thereby preventing supply of the liquid to the endoscope. When the switch is open, the circuit switches the selector valve to a second position for communicating the pipe. If the switching mechanism is operated under this condition, the liquid is supplied to the endoscope through the pipe.
대표청구항
▼
1. A liquid supplying device for an endoscope which includes a control section, an insertion section extended from the control section and having a nozzle at its distal end, a light guide cable extended from the control section and having a connector at its distal end, an air supply channel extendin
1. A liquid supplying device for an endoscope which includes a control section, an insertion section extended from the control section and having a nozzle at its distal end, a light guide cable extended from the control section and having a connector at its distal end, an air supply channel extending in the endoscope and having one end communicating with the nozzle and the other end opening to the connector, and a light guide extending in the endoscope from the distal end of the insertion section to the connector; said liquid supplying device comprising: a housing with a connecting portion to which the connector of the endoscope is connected; air and liquid supplying means, arranged inside the housing, for supplying liquid and air into the air supply channel from the other end of the air supply channel; a light source which is arranged inside the housing and which emits light which becomes incident on the light guide from that end of the light guide which is near the connector; and regulating means for preventing the air and liquid supplying means from supplying liquid while the light source is ON. 2. A device according to claim 1, wherein said air and liquid supplying means includes a liquid supply tank holding liquid therein; an air pump; communicating means having an air supply pipe connecting the air pump to the connecting portion and liquid supply tank and a liquid supply pipe connecting the liquid supply tank to the connecting portion; and switching means which is connected to the communicating means and which is switched between a first position for allowing supply of air from the air pump to the air supply channel of the endoscope and a second position for allowing the supply of the liquid from the liquid supply tank to the air supply channel. 3. A device according to claim 2, wherein said regulating means includes a selector valve which is connected to the air supply pipe at a position between the air pump and the liquid supply tank and can be switched between a first position for blocking the air supply pipe and a second position for communicating the air supply pipe; a light source switch; and a control circuit which is connected to the selector valve, the light source switch, the light source, and the air pump, and which drives the air pump and light source and switches the selector valve to the first position when the light source switch is closed, and which switches the selector valve to the second position when the light source switch is open. 4. A device according to claim 3, wherein said selector valve has a cylinder connected to the air supply pipe; a piston which is arranged inside the cylinder to be movable between a first position for blocking communication of the air supply pipe and a second position for allowing communication of the air supply pipe; a biasing member for biasing the piston to the first position; and a solenoid which is arranged inside the cylinder and which is energized by the control circuit to attract the piston to the second position when the light source switch is open. 5. A device according to claim 2, wherein said regulating means includes a selector valve which is connected to the liquid supply pipe at a position between the switching means and the liquid supply tank and which can be switched between a first position to block communication of the liquid supply pipe and a second position for allowing communication of the liquid supply pipe; a light source switch; and a control circuit which is connected to the selector valve, the light source switch, the light source, and the air pump, and which drives the air pump and light source and switches the selector valve to the first position when the light source switch is closed, and which switches the selector valve to the second position when the light source switch is open. 6. A device according to claim 5, wherein said selector valve has a cylinder connected to the liquid supply pipe; a piston which is arranged in the cylinder to be movable between a first position for blocking communication of the liquid supply pipe and a second position for allowing communication of the liquid supply pipe; a biasing member for biasing the piston to the first position; and a solenoid which is energized and attracts the piston to the second position when the light source switch is open. 7. A device according to claim 2, wherein said regulating means includes a light source switch; a control member which is engaged with the light source switch and which is mounted on the housing to be movable between a first position for opening the light source switch and a second position for closing the light source switch; a control circuit which is connected to the light source switch, the light source, and the air pump and which drives the air pump and light source when the light source switch is closed; and a selector valve which is connected to the liquid supply pipe at a position between the switching means and the liquid supply tank, is engaged with the control member, and cooperates with the control member to allow communication of the liquid supply pipe when the control member is at the first position and to block communication of the liquid supply pipe when the control member is at the second position. 8. A device according to claim 2, wherein said regulating means includes a light source switch, a control member which is engaged with the light source switch and is mounted on the housing to be movable between a first position to open the light source switch and a second position to close the light source switch, and a control circuit which is connected to the light source switch, the light source and the air pump and drives the air pump and light source when the light source switch is closed; and the control member has a stopper which engages with the switching means to lock the switching means at the first position when the control member is at the second position. 9. A device according to claim 2, wherein said regulating means includes a light source switch; locking means for engaging with the switching means to lock the switching means at the first position; and a control circuit which is connected to the light source switch, the air pump and the light source, and which drives the air pump and light source and engages the locking means with the switching means when the light source switch is closed and which disengages the locking means from the locking means when the light source switch is open. 10. A device according to claim 9, wherein said locking means has a solenoid connected to the control circuit; and a plunger driven by the solenoid and engaged with the switching means. 11. A device according to claim 1, wherein said air and liquid supplying means includes a first air pump, a liquid supply tank holding a liquid therein, a second air pump connected to the liquid supply tank for decompressing the liquid held in the liquid supply tank, communicating means having an air supply pipe connecting the first air pump and the connecting portion and a liquid supply pipe connecting the liquid supply tank and the air supply pipe, and switching means which is connected to the communicating means and which is movable between a first position for allowing supply of air from the first air pump to the air supply channel of the endoscope and a second position for allowing supply of the liquid decompressed by the second air pump to the air supply channel; and said regulating means has a light source switch, and a control circuit which is connected to the light source switch, the first and second air pumps and the light source, and which drives the first air pump and light source when the light source switch is closed and which drives the second air pump when the light source switch is open. 12. A device according to claim 1, wherein said air and liquid supplying means includes first and second liquid supply tanks holding liquid therein, an air pump, an air supply pipe connecting the air pump to the connecting portion and the first and second liquid supply tanks, a liquid supply pipe connecting the first and second liquid supply tanks to the connecting portion, a first selector valve which is connected to the air supply pipe at a position between the air pump and the connecting portion and which is movable between a first position for allowing supply of air from the air pump to the connecting portion and a second position for allowing supply of air from the air pump into the first and second liquid supply tanks, and a second selector valve which is connected to the liquid supply pipe at a position between the first and second liquid supply tanks and the connecting portion, and which can be switched between a first position for allowing supply of the liquid in the first liquid supply tank to the connecting portion and a second position for allowing supply of the liquid in the second liquid supply tank to the connecting portion; and said regulating means includes a light source switch, and a control circuit which is connected to the air pump, the light source, and the light source switch, and which drives the air pump and light source and switches the first and second selector valves to the first positions, respectively, when the light source switch is closed, and which allows the first and second selector valves to be switched to the second positions, respectively, when the light source switch is open.
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