Method for measuring compartment pressure and device

Abstract

The invention relates to an automatic device for measuring compartment pressure and a measuring method of the automatic device. The automatic device belongs to a mechatronics product and relates to the mechanical automation, measurement and control field. The device consists of a constant-speed push injection device, a pressure conduction device, a display measurement and control portion, a shell and a power source. Ports of a tee joint in the pressure conduction device have small pressure difference under the condition that flow speed of incompressible liquid is quite low, measurement errors depend on measurement of the flow speed of the liquid at a measuring end, materials of rubber tubes, length, diameter, height, sizes of needle heads and the like, correction of surface tension of liquid droplets and extraction algorithm of effective values of software, and a pressure error value can be changed along with change of the parameters, and can be calculated by the measurement and control portion by means of simulating a pressure error condition, so that an actual pressure value is obtained, namely error correction technology is realized. In a non-liquid environment, pressure cannot be directly measured and is necessarily measured indirectly, liquid is injected into the non-liquid environment at different steps within a short time, when air column pressure is smaller than compartment pressure, the liquid does not enter the human body, only air is compressed, once the air column pressure achieves the compartment pressure, the liquid can flow into the human body, at the moment, balance is realized, and the air column pressure is equal to the compartment pressure, namely a pressure balance measurement mode is realized.

Description

Technical field [0001] The invention is a device for measuring the pressure of a fascia chamber and a measuring method thereof. It belongs to mechatronics products, involving the fields of mechanical automation and measurement and control. Background technique [0002] With the development of transportation, construction, and technology, people are moving faster, higher, and farther. However, various car accidents, industrial accidents, and natural disasters frequently occur. Due to the increase in crush injuries and limb fractures, orthopedic surgeons will face unprecedented Obviously, a very important factor causing this situation is a disease called bone-compartment syndrome. If it is not detected or treated in time, it will lead to the loss of the patient’s limbs and even life-threatening. At present, there is no instrument specifically used to measure the pressure of the fascial compartment in China. The Whitesides method is generally used to measure the pressure of the fas...

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Problems solved by technology

[0003] Another difficulty is the measurement environment. The fascia chamber is a non-fluid environment. Due to the lack of flowing liquid, the pressure cannot be directly measured. A method that can derive the pressure in the fascia chamber is needed, and an accurate and stable pressure must be derived. stress is not easy

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