A gas consumption measuring device for an insufflation machine

Abstract

The invention discloses a device for measuring gas consumption of an insufflation machine. The upper and lower ends of the measuring tube are respectively provided with a scale and a limiting plate. The latex liner is arranged in the measuring tube and is located between the scale and the limiting plate. The latex liner is used to collect and store the carbon dioxide gas output by the insufflation machine. The scale and the limit pressure plate protect the latex liner and limit the outer diameter of the latex liner after it is inflated by air. The gas inlet and outlet joints are installed on the measuring tube , the air inlet and outlet joints are interconnected T-shaped connecting pipes, including an air inlet interface, an air pressure measurement interface and an air outlet interface; the air consumption measuring device of the present invention has low manufacturing cost, and the main material is a foldable soft material, which is easy to use and the whole device After being folded, the volume is small, and the storage and transportation are convenient, and the gas consumption measuring device of the insufflation machine can be manufactured at a very low cost, and the use and transportation are convenient.

Description

technical field [0001] The invention relates to the field of carbon dioxide insufflation machines, in particular to a device for measuring the gas consumption of an insufflation machine. Background technique [0002] With the improvement of medical level, minimally invasive surgery has gradually replaced open surgery by virtue of the advantages of small wounds and short recovery period. The carbon dioxide insufflation machine is an essential medical device in minimally invasive surgery. It is used to inject predetermined carbon dioxide gas into the patient's abdominal cavity to expand the abdominal cavity and provide imaging and operating space for minimally invasive surgery. According to the functional requirements of the product, the insufflation machine not only needs to complete the basic functions such as gas injection and air pressure detection, but also needs to measure the gas consumption. The measurement accuracy must meet the requirements of the standard specificat...

AI Technical Summary

Problems solved by technology

It is relatively easy to collect the gas completely, and it is enough to use a rubber elastic airbag, but it is more difficult to measure the gas accurately and quickly. It is not only necessary to ensure that the measured gas maintains a regular shape, but also to prevent the gas from being pressurized and leaked, otherwise it is difficult to obtain a relative value. accurate results

When using a graduated glass container with a float to measure the gas capacity, the sealing effect of the float is difficult to guarantee, and the maximum value needs to be read quickly, and the glass container is relatively large, which is difficult to store and transport

When the air bag is used to collect the gas and then loaded into the measuring device with scale, there will be no problem of air leakage, but it is difficult to ensure that the gas is not compressed when the air bag is deformed, and the shape of the air bag is also difficult to completely fit the shape of the measuring device. To measure the output gas volume of the insufflation machine, the measuring device must be large enough (for example, more than 20L), if the measuring device is too large, it is inconvenient to use and transport, and the production cost of the measuring container is also high

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