A device for adjusting negative pressure suction flow for minimally invasive surgery

Abstract

A device for adjusting negative pressure suction flow for minimally invasive surgery, which includes a suction catheter (6), a flow regulator (2) and a negative pressure tube (7), one end of the negative pressure tube (7) is connected to a negative pressure source (1 ), the other end is connected with the waste liquid bottle (3), the suction end of the suction catheter (6) extends into the surgical site to absorb surgical waste, and the other end is inserted into the waste liquid bottle and the waste is discharged into the waste liquid bottle under negative pressure. In the waste bottle, the characteristic is that the flow regulator (2) used to adjust the suction pressure or flow at the suction end of the suction catheter (6) is located between the two ends of the negative pressure tube (7) instead of the two ends of the suction catheter (6) between to ensure that the suction channel of the suction catheter (6) is unblocked. The invention does not cause blockage of the negative pressure suction channel and improves the operation safety.

Description

technical field [0001] The invention relates to a medical device, which is a device for adjusting negative pressure suction flow for minimally invasive surgery. Background technique [0002] At present, during clinical surgical operations, the use of negative pressure suction devices is very common, which plays a vital role in creating a good surgical field of view for the surgeon. Negative pressure aspirator can be used to remove surgical waste liquid and smoke from electrocution. In minimally invasive surgery, the insufflation machine inputs positive pressure into the body cavity, and there is a positive pressure pneumoperitoneum in the body cavity that is much higher than the atmospheric pressure. Therefore, it is very easy to form a high-flow negative pressure during the use of the aspirator, causing the aspirator head to damage tissues and organs. In addition, the suction of the negative pressure suction source commonly used in hospitals at present can easily cause the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to design a method to move the flow adjustment device forward to the negative pressure source in view of the problems that the existing surgical negative pressure adjustment adopts the adjustment of the section of the catheter of the suction head to block the waste material channel, causing inconvenience in use and inability to accurately control the flow. Negative pressure suction device with flow adjustment front for minimally invasive surgery without changing the flow area of ​​the suction catheter behind the bottle and the waste liquid bottle

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