Negative pressure drainage device with adjustable pressure

Abstract

The invention discloses a negative pressure drainage device with adjustable pressure and belongs to the field of medical equipment. The negative pressure drainage device comprises a liquid storage bottle, a drainage tube, a lock catch connector connecting an inner cavity of the liquid storage bottle and the drainage tube. The drainage tube is sequentially provided with a pressure gage and a pressure regulating valve along the liquid flowing direction. The drainage tube is further provided with a first reverse flow resistance device. A second reverse flow resistance device is disposed at the lock catch connector end in the liquid storage bottle. The liquid storage bottle is further provided with a vacuum indicator communicated with the inner cavity. By the aid of the negative pressure drainage device with adjustable pressure, the volume of liquid in the bottle can be measured precisely, the bottle body is small and light and easy to carry, and the problems of siphon or inadequate drainage caused by too high or too low a negative pressure value can be avoided when pressure is properly adjusted through a pressure adjusting valve. Meanwhile, pressure changes in the bottle can be directly observed through the vacuum indicator, and the risk of retrograde infection can be effectively removed under the action of the double reverse flow resistance devices.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a negative pressure drainage device with adjustable pressure. Background technique [0002] As early as the 1970s, there were many documents in the Soviet Union exploring the application of negative pressure to treat refractory wounds and wounds. In 1986, it was proposed to use negative pressure suction and surgical debridement to treat purulent infected wounds. The product has also developed from the initial rubber tube drainage to the current negative pressure drainage device. [0003] The negative pressure drainage device is a medical device that uses the principle of negative pressure to extract blood and fluid from the patient's lesion to promote wound recovery. The clinical products mainly include negative pressure suction balls and negative pressure drainage bottles. Among them, the biggest defect of the negative pressure suction ball is that the negative pressure value i...

AI Technical Summary

Problems solved by technology

Among them, the biggest defect of the negative pressure suction ball is that the negative pressure value is insufficient, the drainage is not sufficient, and the patient often suffers from infection and fever symptoms; while the traditional negative pressure drainage bottle is bulky and not easy to carry, and some products need manual suction to make the inside of the bottle dry. Negative pressure is generated, which is inconvenient to use, and low negative pressure drainage bottles have disadvantages such as drainage blockage and insufficient drainage during drainage, while high negative pressure drainage bottles often have complex structures and large volumes. , easy to cause siphoning, and even damage to muscles, tissues and organs. At the same time, it is impossible to measure the volume of liquid flowing into the storage bottle, which is not conducive to clinical observation and judgment of wound treatment, and limits the clinical use of the product.

Images