Trachea cannula with function of monitoring cuff pressure in real time

Abstract

The invention discloses a trachea cannula with a function of monitoring the cuff pressure in real time. The trachea cannula comprises a pressure monitoring display device, an inflation pipe, an elastic film, a cuff and a pipe body, wherein one end of the pipe body is a machine connecting end, the other end of the pipe body is a patient connecting end, and the cuff is arranged on the pipe body close to the patient connecting end in a sleeving manner; one end of the inflation pipe is communicated with the cuff, and the other end of the inflation pipe is communicated with the pressure monitoringdisplay device; the elastic film is arranged on the pressure monitoring display device; the pressure monitoring display device comprises a pressure sensor, a circuit, a digital screen and a power module; the pressure sensor and the digital screen are connected with the circuit; the pressure sensor is used for collecting the pressure of the cuff; and a power supply is used for supplying electricityto the pressure monitoring display device. The whole trachea cannula has an integrated structure, the inflating opening and the pressure monitoring display device are integrated together, judgment can be performed by combining an experience-based judgment method and a pressure real-time monitor display method, and the result has high reliability.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a tracheal intubation tube for real-time monitoring of cuff pressure. Background technique [0002] Endotracheal intubation is a technique of inserting a special endotracheal tube into the human trachea. This technique has become an important measure in the process of cardiopulmonary resuscitation and rescue of critically ill patients with respiratory dysfunction. The cuff is located at the lower part of the endotracheal tube, and its main functions are: fixation, keeping the endotracheal tube in the center of the trachea, avoiding damage to the tracheal mucosa at the front of the tube; sealing, preventing air leakage, and ensuring the supply of tidal volume; preventing aspiration, oropharynx Aspiration of part of the secretion and gastric contents after regurgitation reduces infection. If the cuff inflation pressure is too high or too low or if air leakage occurs, it will cause h...

AI Technical Summary

Problems solved by technology

If the cuff inflation pressure is too high or too low or if air leakage occurs, it will cause harm to the patient. When the gas overflows from the weak part of the cuff and loses the leak-proof performance, it will cause local mucosal oppressive ischemia and cause circular scar after recovery. When the trachea is narrowed, the trachea dilates, the posterior wall of the trachea is damaged, and the intracapsular pressure that is too high for a long time causes tracheomalacia or necrosis

[0003] At present, the main methods and devices for cuff pressure monitoring on the market are: (1) finger pinching method, which is given by the personal experience of medical staff. The catheter cuff is inflated, and the average pressure measured by finger pinching is high or low, but because there is no fixed reference standard, the pressure estimation based on personal experience and finger feeling is not accurate enough to achieve the expected effect

(2) The airbag pressure gauge method can safely inflate the cuff by measuring the pressure of the cuff. The main foreign brands are VBMTM and AmbuTM, but the pressure needs to be monitored every 4-6 hours, and the cuff pressure cannot be monitored in real time. The operation is complicated. Meters are expensive

(3) Patent CN105233384A, a tracheal intubation tube that can automatically monitor the pressure of the balloon. This device uses a Bluetooth module to connect to an external terminal to monitor the pressure, but its pressure measurement module is placed inside the cuff, and it will enter the human body during intubation. The use process will affect the physiological environment of the human body, which is dangerous to people. At the same time, this separate structure requires an independent display terminal, which cannot easily read the pressure

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