| 摘要 |
<p>A multifunctional catheter (18) for detecting respiration and ECG signals can simultaneously detect esophageal pressure, multi-channel diaphragm EMG signals, and esophageal ECG, and has the function of nasal feeding. Three noncommunicating lumens inside the catheter (18) are used for accommodating electrode leads (24), conducting pressure and nasal feeding respectively. The outside of the catheter (18) is equipped with one balloon (22), which is communicated with a small lumen (19) inside the catheter (18) for measuring esophageal pressure. The distal end of the catheter (18) is provided with multiple big pores (14), which are connected witha gastric tube joint (29) at the proximal end of the catheter (18) through a big lumen (21) inside the catheter (18) for nasal feeding. The proximal end of the balloon (22) is provided with one grounding electrode (31) and the distal end of the balloon (22) is successively provided with one ECG electrode (10) and nine electrodes (1-9) for recording diaphragm EMG. There is a distance (15,32) between the grounding electrode (31) and the balloon (22), and between the balloon (22) and the ECG electrode (10) respectively. There is a bigger distance (11) between the ECG electrode (10) and the electrode (9) for recording diaphragm EMG, and there isa minimal distance (12) between the adjacent electrodes (1-9) for recording diaphragm EMG. There is a distance between each one of the big pores (14) at the distal end.</p> |
