Tracheal catheter capable of monitoring mixed venous oxygen saturation via air passage without trauma

Abstract

A two-chamber air tube pipe for monitoring blood oxygen saturate through airway without hurt, relates to monitoring device for blood oxygen saturate of mixed vain (Sv02) especially. A main set bag is established on the pipe, and a vice set bag on the left pipe. A oxygen saturate detector is fixed in both of the main and the vice set bags, and connects the oxygen saturate monitor through the conductors buried in the inner pipe wall of the pipe. Oxygen saturate detector is fixed in air tube together with the air tube pipe. Oxygen saturate detector on the surface of the main set bag is directed to main artery, and oxygen saturate detector on the surface of the vice set bag is directed to left pulmonary artery, measuring the blood oxygen saturate of artery (Sa02) and vain (Sv02) individually, and the signal is conducted to the blood oxygen saturate monitor through the conductors. Oxygen saturate detector is fixed in the air tube pipe directly, and the conductors are buried in the pipe walls, which could decrease the impact to diameter and sectional area of air tube pipes, induce the resistance of the air way, and avoid the extra additive damage as a result of the monitoring process.

Description

Technical field: [0001] The present invention relates to medical instruments, in particular to medical monitoring devices, in particular to a mixed venous oxygen saturation (SvO) 2 ) monitoring device, specifically a tracheal catheter system for non-invasive monitoring of blood oxygen saturation through the airway. Background technique: [0002] In the prior art, one of the most widely used methods for invasive monitoring of cardiac function and the balance of oxygen supply and consumption in the body in clinical and animal experiments is the use of multi-lumen pulmonary artery catheters, which were introduced by the 1970s. Invented by Swan, Ganz, Forrester and Ellis et al. Swan-Ganz catheter is used to monitor cardiac output, which can guide clinical treatment, efficacy evaluation and clinical auxiliary diagnosis and treatment. This technology provides clinicians with a powerful weapon and greatly facilitates the treatment and management of clinically critical patients. ...

AI Technical Summary

Problems solved by technology

[0008] 1. Arrhythmia, arrhythmia may occur due to the stimulation of the catheter and excessive operation when inserting the catheter, and ventricular premature beats are more common, and it is more likely to occur when the myocardial stress is high

[0009] 2. Airbag rupture, blood components attached to the surface of the airbag can gradually reduce the elasticity of the airbag, long-term indwelling catheter, repeated use and frequent over-inflation of the airbag will cause airbag rupture

[0010] 3. Pulmonary infarction, air bag rupture, misinjection of excessive gas, thrombosis around the catheter, and catheter indwelling for too long can cause small-scale asymptomatic pulmonary infarction

[0013] 6. Thrombosis, any catheter inserted into the blood vessel can lead to thrombosis, and the polyhexene material used to make pulmonary artery catheters is more likely to occur

[0014] 7. Cardiac tamponade, any operation in the heart may cause heart perforation and cause cardiac tamponade

Also, under conditions of hypoperfusion and mechanical disturbances, oxygen saturation measurements at peripheral sites such as fingers and ears are often inaccurate.

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