•1285554 九、發明說明： 【發明所屬之技術領域】 本發明是有關於-種偵測儀器，特別是指—種用來摘 測氣管插管是否正確的氣管插管自動偵錯系統及方法。 【先前技術】 當病人發生如心肺功能停止、呼吸道阻塞、呼吸道急 症等氣道問題，急救執行者必須在最短的時間内取得設備 ’進行緊急插管處理以建立呼吸道。如BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detection apparatus, and more particularly to an automatic detection system and method for an endotracheal intubation for detecting whether a tracheal intubation is correct. [Prior Art] When a patient develops an airway problem such as cardiopulmonary function stop, airway obstruction, or respiratory tract emergency, the first aid performer must obtain the device in the shortest time to perform an emergency intubation process to establish a respiratory tract. Such as
> 了夂逼如圖1所示，目前醫 界採用插管設備主要包括：一管體1〇 ^ ^ 吕版，及一設在管體1()近 前端處的氣囊（cuff) 12。 配合參閱圖2,插管執行者將氣囊12自病人口腔伸入 氣管中。然而’人體π腔與氣管21、食道22皆相通， 且氣管21、食道22極為靠近’又病人可能有頸部短粗或顧 顯、下頷部分異|等情％，即使插管經驗豐富的資深醫師 也無法避免發生錯誤插管，例如將管子插入食道内（ esophageal intubation )，或發生困難插管的情形。 氣囊12伸入後，執行插管者必須能夠立即偵測出是否 為食道插管，以便拔除並重新建立氣管插管，避免造成嚴 重的後遺症。在無法確認氣管或食道插管的情形下，目前 高級心肺復甦術（Advanced Cardiac Life Supp〇rt，acls) 用來偵測插管位置的方法有： Α·初級確認（primary c〇nfirniati〇n) 1·以喉頭鏡（laryngoscope)目視插管前端通過聲帶。 ;、、i而此方法存在一盲點·並不是每位病人被插管時都 可看到聲帶；且即使可目視插管前端通過聲帶，但在 執行最後放入的步驟中，仍可能會發生偏離正確位置 而進入食道的情形。 2·^插管後，擠壓賴球（Ambu)，接著用聽診器聽胃 疋否有空氣聲，以及察看胸部是否起伏；若胃無空氣 聲二胸部有起伏，表示插管在氣管内；反之則為食道 插管。本方法盲點在於：氣流經過食道時，很容易在 聽診胸部時聽到類似呼吸聲，而無法偵测出食道插管 〇 B·次級確認（Secondary Confirmation) 1·利用潮氣末二氧化碳偵測器（End七dal c〇2 detectors)可偵測肺部内之二氧化碳。此法是以化學 試劑偵測C〇2濃度。倘若病人被插管前，喝了碳酸 飲料或服用制酸劑，或是插管前使用袋瓣罩甦醒器（ bag-valve-mask )將肺泡空氣壓進食道，都可能產生 偽陽性情形；反之，當病人發生嚴重低血壓、心臟停 止跳動、到院前死亡、或是肺部有大量生理死腔（ dead space)時，例如：大量肺栓塞的病人，則可能 產生偽陰性的情形。 2·利用食道債測球（Esophageal detector device，EDD ) ’藉由擠壓連接在管體1〇末端的橡皮球約75到 90ml ’若壓扁的球立即恢復原狀（< 4秒）則表示插 管在氣管内；若很慢才回復原狀（> 4秒），則表示 插管在食道内。但是當病人有大量痰液、肺部纖維化 1285554 —肺積水、肥胖等情況，使用此方法可能會使氣管插 管誤判為食道插管。另—方面，若播管前使用球-瓣 膜-面罩（bag-valve-mask)將大量空氣擠塵到食道及 胃内’則可能會將食道插管關域管插管。 C·其他偵測方法 1. 觀：插：管壁是否有水蒸氣凝集，若有，則表示是 氣官插管；反之則為食道插管。> As shown in Figure 1, the intubation equipment currently used in the medical industry mainly includes: a tube body 1 〇 ^ ^ lv version, and a balloon (cuff) 12 disposed at the proximal end of the tube body 1 (). Referring to Figure 2, the cannula performer extends the balloon 12 from the patient's mouth into the trachea. However, the human π cavity is in communication with the trachea 21 and the esophagus 22, and the trachea 21 and the esophagus 22 are very close together. The patient may have a short neck or a thin neck or a partial squat, etc., even if the intubation is experienced. Physicians are also unable to avoid erroneous intubation, such as insertion of a tube into the esophageal intubation, or a difficult intubation. After the balloon 12 is inserted, the intubator must be able to immediately detect if the esophagus is cannulated in order to remove and re-establish the tracheal intubation to avoid serious sequelae. In cases where tracheal or esophageal intubation cannot be confirmed, the methods used by Advanced Cardiac Life Supp〇rt (accls) to detect intubation are: Α·primary confirmation (primary c〇nfirniati〇n) 1. Visually inspect the front end of the cannula through a vocal cord with a laryngoscope. ;,, and there is a blind spot in this method. Not every patient can see the vocal cords when they are intubated; and even if the front end of the cannula can be visually passed through the vocal cords, it may still occur during the last step of performing the insertion. A situation that deviates from the correct position and enters the esophagus. 2·^ After intubation, squeeze the ambulatory ball (Ambu), then use the stethoscope to listen to the stomach sputum, whether there is air sound, and to see if the chest is undulating; if the stomach has no air, the second chest has undulations, indicating that the cannula is inside the trachea; Then the esophagus is intubated. The blind point of this method is that when the airflow passes through the esophagus, it is easy to hear a similar breathing sound when auscultating the chest, and it is impossible to detect the esophageal intubation 〇B.Secondary Confirmation 1·Using the end-tidal carbon dioxide detector (End) Seven dal c〇2 detectors) detect carbon dioxide in the lungs. This method uses a chemical reagent to detect the concentration of C〇2. If the patient is intubated, drinking carbonated beverages or taking antacids, or using a bag-valve-mask to inflate alveolar air into the esophagus before intubation, false positives may occur; When the patient has severe hypotension, cardiac arrest, death before hospitalization, or a large number of dead spaces in the lungs, such as a large number of patients with pulmonary embolism, a false negative may occur. 2. Use the Esophageal detector device (EDD) to squeeze the rubber ball attached to the end of the tube 1 to approximately 75 to 90 ml. 'If the flattened ball is immediately restored (< 4 seconds) The cannula is in the trachea; if it is slow to return to its original state (> 4 seconds), the cannula is in the esophagus. However, when the patient has a large amount of sputum, pulmonary fibrosis 1285554 - hydronephrosis, obesity, etc., this method may cause the tracheal intubation to be misjudged as esophageal intubation. On the other hand, if a large amount of air is squeezed into the esophagus and stomach using a bag-valve-mask before the tube is administered, the esophageal cannula may be intubated. C. Other detection methods 1. View: Insert: Whether there is water vapor agglutination on the tube wall, if it is, it means gas intubation; otherwise, it is esophageal intubation.
2. 用光纖内視鏡—直伸入插管内觀 ，是否有氣管㈣構造。此法雖可直接看到氣管内 官在氣管或食道内’但是設備價格昂貴，只有少數 醫療單位有此設備。 、、 一〜个，疋栩官位置，但無法即時得知。 亡點甚^⑽所建議採用的偵測法，臨床應用上已知各有 ^吏用㈣醫界普遍期望能夠找出—個新的準確度高且方 貞测法，#高判斷插管位置的準確度，2. Use a fiber optic endoscope - straight into the cannula, whether there is a trachea (four) structure. Although this method can directly see the tracheal internal organs in the trachea or esophagus, but the equipment is expensive, only a few medical units have this equipment. ,, one ~ one, the position of the eunuch, but can not be instantly known. The detection method recommended by the death point is (10), and the clinical application is known to have various uses. (4) The medical community generally expects to find out - a new high accuracy and square sputum method, # high judgment intubation position Accuracy,
Γ 易操作、可迅速獲得結果、可信度高且成本合 【發明内容】 因此， 速獲得結果 統。 本發明之目W ’即在提供一種簡易操作、可迅 ° k度阿且成本合理的氣管插管自動偵錯系 本發明之Ο 一 獲得結果、可信^的，、在於提供—種“操作、可迅速 。 X呵且成本合理的氣管插管自動偵錯方法 1285554 1 , 於是，本發明基於氣管與食道解剖生理構造不同，預 先利用貫驗方式，將氣tA貪充氣量)所 反應的ϋ變化加以吾外，_彳彳$ Λ ” ^纹侍礼g與食道的體積-壓力分 依據该體積-壓力範圍設計出一自動偵錯系統。 管與食道解剖生理構造，大致上是··人體氣管 ^為2〜2.5公分’有U型軟骨组織及少數肌肉彈力較 小，食道管徑為1·3〜19公分，盔典 外縱内产、η , …、車人月組織，都為肌肉層（ 外縱内％ )因此彈性較大。實驗 々 只鉍万式疋在多數個體間多次 #，·，母久試驗將氣管插管以固定深产八 it , . ^ ^ 口疋，衣度刀別置入氣管與食 2並使乳囊充氣，動態求得充氣量與 的關係；綜合各個體及]又&刀之間 線分布範圍。人數據’統整得量化的數據及曲 貫驗數據顯示，食谨古$旦 氣管的曲線斜率，μ 力曲線斜率明顯較大 量$ι〇 ^ ，、 轧里$5mI時特別準確，·在充氣 比： …就相同充氣量而言，氣囊在食道中所受壓力易 Easy to operate, quick results, high reliability and cost. [Summary] Therefore, the results are obtained quickly. The object of the present invention is to provide an easy-to-operate, rapid-cost, and cost-effective automatic detection of tracheal intubation. The present invention achieves results, is reliable, and provides "operation" X, and cost-effective automatic detection method of tracheal intubation 1285554 1 , the present invention is based on the difference between the anatomical and physiological structures of the trachea and the esophagus, and the pre-test method is used to react the gas tA. The change is given to me, _彳彳$ Λ ” 纹 侍 侍 与 与 and the volume of the esophagus - pressure points according to the volume - pressure range designed an automatic debugging system. The anatomical and physiological structure of the tube and esophagus is roughly ·················································································· The production, η, ..., and the human body structure of the vehicle are all muscle layers (% in the outer longitudinal direction) and therefore have greater elasticity. In the experiment, only the 疋 疋 疋 疋 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数The capsule is inflated, and the relationship between the amount of inflation and the amount of inflation is obtained dynamically; the range of line distribution between each body and the knife is integrated. The human data 'quantified and quantified data and the perscriptive data show that the slope of the curved curve of the food, the slope of the μ force curve is significantly larger than the amount of $ 〇 〇 ^, and the thickness of the $5mI is particularly accurate. Ratio: ... in terms of the same amount of inflation, the airbag is under pressure in the esophagus
皆大於在氣營φ杯：θJ 力範鬥下ιψ丸 又1 。基於此，可定義食道插管的壓 力乾圍下限為壓力臨界 值，艮迢插官的充氣量-壓力曲線斜 革的靶圍下限為斜率臨 斷標準。 值作為^床上急救插管時的判 氣管2:::=自:偵錯系統與-_管連接’該 該自㈣錯系統包二充；！於該管體近前端處的氣囊； 乳早疋、一感壓單元、一控制單 70 及一輸出單元。 早7L包括一與該管體連通的注射模組，及一利 ^85554 =碼或步進式定量控制該注射裝置之充氣量的定位控制 杈組；該定位控制模組在控制充氣量的過程中產生計量訊 號。該感屢單元，連接至該氣囊且將氣囊所受麼力轉換為 數位壓力訊號。 亥控制單元即微控制器，包括一計算模組、一通訊模 $ ’及-資料暫存區。該計算模組接收定位控制模組的計 f訊號與錢單元的壓力訊號，並計算得到-對應的充氣 壓力曲線圖，儲存於該資料暫存區，並將該計算得到的 壓力值及/或該斜率值與前述實驗定義的壓力臨界值、斜率 界值比較，4述曲線圖中包含壓力值及曲線斜率值資訊 ^通訊模組即微控制器的數支接腳，提供非同步串列通 讯介面’ 以與一般電腦的非同步串列通訊埠相通，與一 般電腦交握通訊，並藉以將壓力值及斜率值等資料上傳到 一般電腦，以方便存檔、進行資料分析，及病歷參考。 旦β該輸出單元與控制單元連接，並包括一可顯示該充氣 里-壓力曲線圖的顯示模組，且當該壓力值及/或斜率值大於 對應臨界值，則顯示警告訊息。 .本發明氣管插管自動债錯方法則是包含以下執行步驟Both are larger than in the gas camp φ cup: θJ force fan bucket ιψ丸1. Based on this, the lower limit of the pressure dry circumference of the esophageal cannula can be defined as the critical value of the pressure, and the lower limit of the target of the inflation-pressure curve of the cutting officer is the slope breaking criterion. The value is used as the judgment of the emergency intubation on the bed. 2:::=From: the debugging system and the -_tube connection'. The self (four) wrong system package two charge; The air bag at the proximal end of the tube body; the milk early sputum, a pressure sensing unit, a control unit 70 and an output unit. The early 7L includes an injection module connected to the tube body, and a positioning control group for quantitatively controlling the inflation amount of the injection device; the positioning control module controls the inflation amount A measurement signal is generated in the middle. The sensing unit is coupled to the air bag and converts the force applied by the air bag into a digital pressure signal. The control unit, that is, the microcontroller, includes a computing module, a communication module $', and a data temporary storage area. The calculation module receives the pressure signal of the position control signal and the money unit of the positioning control module, and calculates a corresponding corresponding inflation pressure curve, stores it in the data temporary storage area, and calculates the calculated pressure value and/or The slope value is compared with the pressure threshold value and the slope boundary value defined in the above experiment. The graph includes the pressure value and the slope value of the curve. The communication module is the number of pins of the microcontroller, providing asynchronous serial communication. The interface ' communicates with the non-synchronized serial communication of the general computer, communicates with the general computer, and uploads the pressure value and the slope value to the general computer for archival, data analysis, and medical record reference. The output unit is coupled to the control unit and includes a display module for displaying the inflated pressure-pressure graph, and a warning message is displayed when the pressure value and/or the slope value is greater than a corresponding threshold. The tracheal intubation automatic debt error method of the present invention comprises the following execution steps
(Α)利用編碼或步進方式使該氣囊定量充氣，並獲得 一計量訊號。 X (Β)感測該氣囊所受壓力，獲得一數位壓力訊號。 (C)依據該計量訊號及壓力訊號計算獲得一充氣量_ 壓力曲線圖，該曲線圖中包含壓力值及曲線斜率值資訊。 9 1285554 片成虱叢92連接，透過 感壓早兀6透過三路轉接 放大器62、滤波器63及A/D轉換器“，將氣㈣所受壓 力轉換為數位壓力訊號61，最後進入控制單元7。由於本 發明所測得氣囊92的壓力變化小，該放大器62必須具有 高靈敏度的放大器電路，可接+奎俠 按又笔伙以下的小信號輸入電 壓，且共模拒斥比（CMRR)高，對電源的共模雜訊消除有較 佳的效果。至於it波H 63’主要功能為消除高頻部分的雜 訊與電源60Hz的雜訊，可採用巴特沃斯或薛比雪夫二階濾(Α) The airbag is quantitatively inflated by coding or stepping, and a measurement signal is obtained. X (Β) senses the pressure of the airbag and obtains a digital pressure signal. (C) According to the measurement signal and the pressure signal, an inflation amount _ pressure curve is obtained, and the graph includes pressure value and curve slope value information. 9 1285554 The chip is connected to the 92, through the pressure sensitive early 6 through the three-way adapter amplifier 62, the filter 63 and the A / D converter ", the gas (four) pressure is converted into a digital pressure signal 61, and finally into the control Unit 7. Since the pressure change of the air bag 92 measured by the present invention is small, the amplifier 62 must have a high-sensitivity amplifier circuit, which can be connected to a small signal input voltage of the Kyocera and the pen, and the common mode rejection ratio ( CMRR) is high, which has better effect on common mode noise cancellation of power supply. As for the main wave H 63' main function is to eliminate high frequency part of noise and power supply 60Hz noise, use Butterworth or Xuebyshev Second order filter
波電路架構來設計本系統的濾波電路。A/D轉換器64可以 内建於控制早元7 ’也可以是外加電路。 I工制單元7即彳政控制為，與充氣單元*、感壓單元6及 輸出單元8連接，並包括一計算模組71、一通訊模組72， 及一資料暫存區73。該計算模組71可接收來自定位控制模 組42的計量訊號420，及來自感壓單元6的壓力訊號61。 計算得到一對應的充氣量-壓力曲線圖，儲存於該資料暫存 區；並將測得的壓力值及/或該斜率值與預設的壓力臨界值 、斜率臨界值比較。該曲線圖中包含壓力值及曲線斜率值 等資訊。該通訊模組即微控制器的數支接腳，提供非同步 串列通訊介面，用以與一般電腦的非同步串列通訊琿相通 ，與一般電腦交握通訊，並藉以將壓力值及斜率值等資料 上傳到一般電腦’以方便存樓、進行資料分析，及病歷參 考。 輸出單元8與控制單元7連接，並包括一可顯示該充 氣量-壓力曲線圖的顯示模組81及一音效模組82，且當該 11 1285554 壓力值及/或斜率值大於對應臨界值，則顯示模組81顯示警 告訊息，同時該音效模組82發出警示聲。 參閱圖5 ’上述控制單元7係將測得的壓力值及/或斜 率值與該圖數值作比較，此圖乃透過實驗獲得，圖中曲線 801代表氣囊92在氣管中隨充氣量增加所反應的壓力值回 歸曲線，且曲線801上對應每一充氣量標示有壓力值實驗 數據的分布；曲線802則是氣囊92在食道中的壓力值回歸 曲線，曲、線802上對應每_充氣量標示有壓力值實驗數據 的分布，且該曲線802白勺壓力值分布下限即壓力臨界值、 斜率臨界狀Μ標準，㈣是減氣量^_時所對應 的壓力。 ~…H〜讽J置，例 如5ml，所測得的壓力值盥 i刀值锌上述壓力臨界值，也就是曲 802的壓力值分布下限作比較；由於氣管插管時，氣囊92 =:=超出臨界值則表示發生食道插管。當以 斜率值作為偵錯標準，在本實施例是針對_<充氣量< 5ml所測得的壓力值，與上述斜率臨界值作比較。此段氣: 插管的充氣量-壓力曲線特別緩 ' 不應已發生食道插管。本實施例氣管插 則表 只測屡力值或只測斜率值；也可以兩厂乐統可 值’或單以斜率值作她警告的判斷標準 過臨界值，顯示模組81即發出逛生.羊/、中之一起 斜率值同時超出臨界值時才發出警^也可以是當壓力值與 如圖6所示’本發明氣管插 自動偵錯方法是包含以 12 .1285554 • 下執行步驟·· ^驟3im位控制模組42使氣囊92 ^量充氣， 並獲得計量訊號420。 V驟32-進步驟31之同時，感壓單元6感測氣囊 - 92所受屋力，經放大器.遽波器63及A/D轉換器“獲 ·—. 得數位壓力訊號61。 7驟33 —控制單兀7接收計量訊號420及壓力訊號61 並冲开獲得充氣篁-；1力曲線圖，該曲線圖中包含麼力值 • 及曲線斜率值資訊。 乂驟34-將壓力值及/或斜率值與對應預設的|力臨界 值、斜率值比較。 步驟35-當該麼力值及/或斜率值大於對應臨界值，則 由顯示模組8顯示警告訊息。 歸納上述’本發明利用氣管與食道解剖生理構造不同 的原理，預先利时驗方式，測得氣囊92在㈣與食道中 充氣時對管壁產生的壓力變化，並量化得到體積_壓力分布 • ’並透過特別設計的氣管插⑸貞"統，可自動測得連 • 續的充氣量-壓力量化數據’可以在臨床上緊急插管動作中 . ’快速、方便且正確地偵測出是否為食道插管；且該積錯 系統成本合理，適合在各醫院診所推廣使用，確實_ 8 本發明的目的。 、這到 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請i利 範圍及發明說明内容所作之簡單的等效變化與修飾，"皆仍 13 J285554 【主要元件符號說明】 31〜35· 步驟 7 · • · ·控制單元 4 · · · · 充氣單元 71· • · ·計算模組 41 · · · 注射模組 72· • ••通訊模組 42 · · · 定位控制模組 73· • · ·資料暫存 420 · · 計量訊號 8 · • · ·輸出單元 5 · * * · 三路轉接器 801 、802曲線 51〜53· 開口 81· • ••顯示模組 6 · · · · 感壓單元 82· • ••音效模組 61 · · · 壓力訊號 9 · • · ·插管 62 · · · 放大 91· • · ·管體 63 · · · 濾波器 92· • · ·氣囊 64 · · · A/D轉換器 15The wave circuit architecture is used to design the filter circuit of the system. The A/D converter 64 can be built in to control the early element 7' or it can be an external circuit. The I system unit 7 is connected to the inflating unit*, the pressure sensing unit 6, and the output unit 8, and includes a computing module 71, a communication module 72, and a data temporary storage area 73. The calculation module 71 can receive the measurement signal 420 from the positioning control module 42 and the pressure signal 61 from the pressure sensing unit 6. A corresponding inflation-pressure curve is calculated and stored in the data temporary storage area; and the measured pressure value and/or the slope value is compared with a preset pressure threshold value and a slope threshold value. The graph contains information such as pressure values and slope values of the curves. The communication module is a plurality of pins of the microcontroller, and provides a non-synchronized serial communication interface for communicating with the asynchronous serial communication of the general computer, and communicating with the general computer, thereby taking the pressure value and the slope. Values and other data uploaded to the general computer 'to facilitate the preservation of the building, data analysis, and medical records reference. The output unit 8 is connected to the control unit 7, and includes a display module 81 and a sound effect module 82 for displaying the inflation amount-pressure curve, and when the pressure value and/or the slope value of the 11 1285554 is greater than a corresponding threshold value, Then, the display module 81 displays a warning message, and the sound effect module 82 issues a warning sound. Referring to Fig. 5, the control unit 7 compares the measured pressure value and/or the slope value with the figure value. This figure is obtained through experiments. The curve 801 in the figure represents the reaction of the air bag 92 in the trachea with the increase of the inflation amount. The pressure value regression curve, and the distribution of the experimental data of the pressure value corresponding to each inflation amount on the curve 801; the curve 802 is the regression curve of the pressure value of the airbag 92 in the esophagus, and the corresponding _ inflation amount on the curve and line 802 There is a distribution of pressure value experimental data, and the lower limit of the pressure value distribution of the curve 802 is the pressure critical value, the slope critical state Μ standard, and (4) is the pressure corresponding to the gas reduction amount ^_. ~...H~ sarcasm, for example 5ml, the measured pressure value 盥i knife value zinc pressure threshold value, that is, the lower limit of the pressure value distribution of the curve 802; due to the tracheal intubation, the air bag 92 =:= Exceeding the critical value indicates that an esophageal cannula has occurred. When the slope value is used as the error detection standard, in the present embodiment, the pressure value measured for _<inflatment amount < 5 ml is compared with the above-described slope threshold value. This gas: Intubation volume - pressure curve is particularly slow ' Esophageal intubation should not have occurred. In this embodiment, the tracheal insertion table only measures the repeated force value or only the slope value; or the two factories can be valued or the slope value is used as a warning criterion for her warning, and the display module 81 is issued. When the slope value of the sheep/the medium exceeds the critical value at the same time, the alarm is issued. ^ When the pressure value is as shown in Fig. 6, the automatic tracheal insertion automatic detection method of the present invention includes the steps of 12.1285554. · The 3im position control module 42 inflates the airbag 92 and obtains the measurement signal 420. At the same time as step S31, the pressure sensing unit 6 senses the house force of the airbag-92, and obtains the digital pressure signal 61 through the amplifier, chopper 63 and the A/D converter. 33—Control unit 7 receives metering signal 420 and pressure signal 61 and flushes it to obtain an inflated 篁-;1 force curve graph, which includes the force value and curve slope value information. Step 34 - The pressure value and The slope value is compared with the corresponding preset force threshold value and the slope value. Step 35 - When the force value and/or the slope value is greater than the corresponding threshold value, the display module 8 displays a warning message. The invention utilizes the principle of different anatomical and physiological structures of the trachea and the esophagus, and measures the pressure change of the airbag 92 on the wall of the tube when inflated (4) and in the esophagus, and quantifies the volume_pressure distribution and is specially designed. The tracheal insertion (5) 贞 " system, can automatically measure the continuous inflation - pressure quantitative data 'can be in clinical emergency intubation action. 'Fast, convenient and correct detection of whether it is esophageal cannula; And the error-prone system is reasonable and suitable It is intended to be used in various hospital clinics, and it is intended that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention cannot be limited thereto. The simple equivalent changes and modifications made by the invention and the description of the invention are still 13 J285554 [Main component symbol description] 31~35·Step 7 · • · Control unit 4 · · · · Inflatable unit 71· • · · Calculation module 41 · · · Injection module 72 · • • Communication module 42 · · · Positioning control module 73 · • · · Data temporary storage 420 · · Measurement signal 8 · • · · Output Unit 5 · * * · Three-way adapter 801, 802 curve 51~53 · Opening 81 · • • Display module 6 · · · · Pressure-sensitive unit 82 · • • Sound module 61 · · · Pressure signal 9 · • · · Intubation 62 · · · Magnification 91 · · · · Tube 63 · · · Filter 92 · • · · Airbag 64 · · · A/D converter 15