Tracheal catheter capable of directly monitoring end-tidal carbon dioxide partial pressure of infant

Abstract

The invention relates to medical instruments, in particular to a tracheal catheter capable of directly monitoring the end-tidal carbon dioxide partial pressure of an infant. The tracheal catheter comprises a catheter body, a cuff, a connector, an opening and a thin tube, wherein the cuff is connected to one end of the catheter body, the connector is arranged at the other end of the catheter body, the opening is arranged in a position, between the cuff and the connector and close to the cuff, of the catheter body and connected with the thin tube, and the tail end of the thin tube is connected with an end-tidal carbon dioxide monitor. The tracheal catheter has the advantages that the tracheal catheter is improved to solve the technical problem that due to the fact that the infant is low in body weight, if an existing tail-end sampling device is used, the dilution effect of fresh air flow in the tracheal catheter on carbon dioxide is evident, and the measured end-tidal carbon dioxide is evidently lower than an actual value, the sampling part opening 1 is close to the top end of the tracheal catheter, the inner diameter of the thin tube 2 is small, the fresh air quantity in the thin tube 2 is low, influence of the fresh air flow on the collected breathing gas at the top end of the tracheal catheter is small, the end-tidal carbon dioxide level can be reflected accurately, and the tracheal catheter is evident in use effect.

Description

technical field [0001] The invention relates to a medical device, in particular to a tracheal tube for directly monitoring the end-tidal carbon dioxide partial pressure of an infant. Background technique [0002] end-tidal carbon dioxide (PETCO 2 ) as a monitoring index has been considered as the sixth basic vital sign besides body temperature, respiration, pulse, blood pressure, arterial oxygen saturation, PETCO 2 It is one of the basic monitoring indicators during anesthesia. The application of end-tidal carbon dioxide partial pressure monitoring technology enables clinicians to continuously and non-invasively monitor the patient's ventilation function and carbon dioxide exchange, so that intraoperative acid-base balance, soda lime failure, excessive ventilation volume, ventilator mechanical Faults, patient shock, cardiac arrest, pulmonary embolism, and endotracheal tube strayed into the esophagus can be detected and adjusted in time, which greatly improves the objectivi...

AI Technical Summary

Problems solved by technology

However, because the endotracheal tube is relatively thick, there is inevitably a section of fresh air flow in the tube, which has little influence on the results of end-tidal carbon dioxide monitoring for adults, but for infants and young children, due to their small tidal volume, Significant CO2 dilution from the fresh air stream would result in inaccurate monitoring using existing sampling devices

Therefore, for infants and young children, clinical anesthesiologists often give up monitoring end-tidal carbon dioxide, which brings many hidden dangers to the respiratory management of infants, and cannot detect and solve unexpected situations in time

At present, there is a lack of endotracheal tubes that can effectively sample and monitor end-tidal carbon dioxide in infants and young children

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