Negative pressure suction anti-suck-back alarm device

The utility model belongs to the field of medical instruments, and particularly relates to a negative pressure suction anti-suck-back alarm device which comprises a shell connected between a negative pressure center and a suction bottle, and a negative pressure center connector and a suction bottle...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHOU YUJIANG, YANG CHENJIE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALARM SYSTEMS DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS SURGERY
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Beschreibung
Zusammenfassung:	The utility model belongs to the field of medical instruments, and particularly relates to a negative pressure suction anti-suck-back alarm device which comprises a shell connected between a negative pressure center and a suction bottle, and a negative pressure center connector and a suction bottle connector are arranged on the shell. The three-way valve is arranged in the shell, two connectors of the three-way valve are connected with the negative pressure center connector and the suction bottle connector respectively, and a third connector is kept unblocked; the liquid sensor is arranged in the suction bottle connector and used for detecting whether liquid exists in the suction bottle connector or not; and the controller is arranged in the shell, the liquid sensor and the three-way valve are both connected with the controller, and the controller is used for adjusting the passage change of the three-way valve. Whether suck-back liquid exists in the tube or not is detected through the liquid sensor, the contr