Gastric tube for monitoring thoracic cavity pressure

Abstract

The invention discloses a gastric tube for monitoring thoracic cavity pressure. The gastric tube comprise a tube body, and one end of the tube body is connected with a main joint; the tube body is provided with a main cavity body, a first sub cavity body, a second sub cavity body and a third sub cavity body which are independent mutually, the main joint communicates with the main cavity body, anda first joint communicating with the first sub cavity body and a second joint communicating with the second sub cavity body are fixed to the outer wall of the main joint; a first balloon and a secondballoon are arranged on the tube body in a sleeving mode; a monitoring probe located between the second balloon and the main joint is arranged on the tube body; the monitoring probe comprises a lightemission element and a photoelectric transducing element; and a light source, a gas injection joint, a pressure measuring element and a micro-processing unit are further included, and the micro-processing unit is electrically connected with the photoelectric transducing element, the light source, a display unit and the pressure measuring element. Through monitoring of esophagus pressure, monitoring of the thoracic cavity pressure is indirectly achieved, the measuring difficulty of the thoracic cavity pressure is greatly reduced, the monitoring process is simple and easy to implement, and the monitoring cost of the thoracic cavity pressure can be lowered greatly.

Description

technical field [0001] The invention relates to a stomach tube for monitoring chest pressure, which belongs to the field of medical measuring or monitoring instruments. Background technique [0002] Regardless of spontaneous breathing or passive ventilation, gas entering the alveoli needs to resist the elastic recoil force of the lung and chest wall at the same time. The thoracic cavity is located between the chest wall and the lungs, and pleural pressure (intrathoracic pressure) is an important monitoring parameter to distinguish the mechanical properties of the lungs from the chest wall. However, it is not easy to directly obtain chest pressure clinically. Therefore, esophageal pressure is often used as a proxy value to indirectly reflect chest pressure to distinguish the contribution of lung and chest wall stress during breathing, such as lung and chest wall elasticity, inspiratory effort and respiratory pressure. Work and so on. Much of the early research on esophageal...

AI Technical Summary

Problems solved by technology

However, esophageal pressure monitoring has certain technical requirements, and the measurement results are affected by many factors, such as the balloon volume and position of the esophageal pressure monitoring catheter, the elasticity of the esophageal wall, and the weight of the mediastinal organs, etc., leading to the fact that this monitoring technology is mostly used in basic research , and not routinely used in clinical practice

[0003] Transpulmonary pressure monitoring has brought us into the era of individualized ARDS treatment, but currently there are only two hospitals in China that can perform transpulmonary pressure monitoring.

At present, there is no corresponding catheter production in China, and it is completely dependent on imports (cooper), and only some high-end ventilators can be tested

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