Backflow prevention device for medical negative treatment drainage device

Abstract

The invention relates to the technical field of medical drainage auxiliary instruments, and discloses a backflow prevention device for a medical negative treatment drainage device. The backflow prevention device comprises the drainage device, a negative-pressure pipe, a fixed pipe and a limiting pipe, the limiting pipe is connected at one end of the fixed pipe in a threaded and sleeving manner, the inside of the fixed pipe is communicated with the inside of the limiting pipe, a first flow guide pipe is communicated between the drainage device and the fixed pipe, a second flow guide pipe is communicated between the limiting pipe and the negative-pressure pipe, a drainage pipe is communicated with the other end of the limiting pipe, and a sealing cover is arranged at the top end of the negative-pressure pipe in a threaded and sleeving manner. According to the backflow prevention device for the medical negative treatment drainage device, drainage is implemented by suction of the drainagedevice, a movable piston is moved to the bottom of the negative-pressure pipe, so that negative pressure is formed in the negative-pressure pipe, liquid in the negative-pressure pipe is prevented fromreturning into a body of a patient by the aid of negative-pressure suction in the negative-pressure pipe when suction of the drainage device is lost, postoperative infection of the patient is prevented, and postoperative wound healing is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical drainage auxiliary devices, in particular to an anti-backflow device for a medical negative therapy drainage device. Background technique [0002] In clinical practice, drainage bags, drainage tubes and other equipment are usually used to guide pus, blood and liquid in human tissues or body cavities to the outside of the body, so as to prevent postoperative infection and postoperative wound healing, so as to achieve the patient's comfort. The effect of secondary injury, with the development of medicine, drainage machines have gradually replaced drainage bags due to the advantages of negative pressure drainage volume controllable. [0003] When draining pus, blood and liquid in the patient's body tissues or body cavities, the drainage machine may fail or have a power outage, which may cause the drainage machine to stop working. Therefore, it is necessary to prevent pus, blood and liquid Backflow i...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an anti-backflow device for medical negative therapy drainage device, which has the advantage of placing the drainage liquid back into the patient's body, and solves the problem that the existing anti-backflow device is only pus, blood and liquid in the drainage machine cannot return to the drainage tube , and there are pus, blood and liquid in the drainage tube connected to the patient, which may flow back into the patient's body, thus affecting the patient's postoperative recovery

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