TWI805313B - Method for dynamically detecting blood pressure and blood pressure detecting apparatus - Google Patents
Method for dynamically detecting blood pressure and blood pressure detecting apparatus Download PDFInfo
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Abstract
Description
本發明是有關於一種血壓量測機制,且特別是有關於一種動態偵測血壓的方法以及血壓偵測裝置。The present invention relates to a blood pressure measurement mechanism, and in particular to a method for dynamically detecting blood pressure and a blood pressure detection device.
目前,高血壓盛行率隨年齡增加而上升。高血壓是沈默的殺手,血壓升高時,大多數的人不會出現明顯症狀,然而,當明顯症狀出現時(例如中風、心肌梗塞等)往往會錯失最佳搶救時間。因此,血壓測量成為全民運動。Currently, the prevalence of hypertension increases with age. Hypertension is a silent killer. When blood pressure rises, most people will not have obvious symptoms. However, when obvious symptoms appear (such as stroke, myocardial infarction, etc.), the best rescue time is often missed. Therefore, blood pressure measurement has become a national sport.
目前量測血壓大致包括下述幾項方式:心導管檢查(Cardiac catheterization)、壓脈帶式血壓計(Cuff blood pressure monitor)、動脈血壓計(Arterial tonometry)、光體積變化描記圖法(Photoplethysmo-gram,PPG)、超音波貼片(Ultrasound patch)以及心電圖(Electrocardiogram,ECG)等。而如何獲得更便於使用以及更為精準的量測結果則為目前追求的目標之一。At present, blood pressure measurement roughly includes the following methods: Cardiac catheterization, Cuff blood pressure monitor, Arterial tonometry, Photoplethysmo- gram, PPG), ultrasound patch (Ultrasound patch) and electrocardiogram (Electrocardiogram, ECG), etc. How to obtain more convenient to use and more accurate measurement results is one of the goals pursued at present.
本發明提供一種動態偵測血壓的方法以及血壓偵測裝置,結合壓脈帶與超音波設備來獲得更便利及更精準的測量方式。The present invention provides a method for dynamically detecting blood pressure and a blood pressure detecting device, combining a cuff and ultrasonic equipment to obtain a more convenient and more accurate measurement method.
本發明的動態偵測血壓的方法,包括:經由主機驅動壓脈帶進行作動,以透過壓脈帶獲得舒張壓與收縮壓;響應於壓脈帶的氣囊氣體釋放完畢,經由主機驅動超音波設備進行作動;透過超音波設備獲得血管數據;以及經由主機基於舒張壓、收縮壓以及血管數據來計算血管彈性係數,以將血管彈性係數作為後續以超音波設備進行即時血壓量測的參考依據。The method for dynamically detecting blood pressure of the present invention includes: driving the cuff through the host to obtain the diastolic and systolic blood pressure through the cuff; in response to the release of the air bag gas in the cuff, driving the ultrasonic device through the host Perform an action; obtain blood vessel data through the ultrasonic device; and calculate the blood vessel elasticity coefficient based on the diastolic pressure, systolic blood pressure and blood vessel data through the host computer, so as to use the blood vessel elasticity coefficient as a reference for subsequent real-time blood pressure measurement with the ultrasonic device.
在本發明的一實施例中,上述超音波設備為貼片型且設置在壓脈帶的表面。In an embodiment of the present invention, the above-mentioned ultrasonic device is a patch type and is arranged on the surface of the cuff.
在本發明的一實施例中,在計算血管彈性係數之後,更包括:在後續以超音波設備進行即時血壓量測的過程中,經由主機驅動超音波設備以獲得當下的血管數據,並基於血管彈性係數、透過壓脈帶所獲得的舒張壓以及當下的血管數據,獲得血壓波形。In an embodiment of the present invention, after calculating the blood vessel elasticity coefficient, it further includes: in the subsequent process of real-time blood pressure measurement with an ultrasonic device, driving the ultrasonic device via the host to obtain the current blood vessel data, and based on the blood vessel The elastic coefficient, the diastolic pressure obtained through the cuff and the current blood vessel data are used to obtain the blood pressure waveform.
在本發明的一實施例中,響應於壓脈帶的氣囊氣體釋放完畢之後,更包括:在驅動超音波設備進行作動之前,經由主機使得壓脈帶的氣囊微加壓,以使超音波設備浮貼於待測物表面。In an embodiment of the present invention, after the air bag of the cuff is released, it further includes: before driving the ultrasonic device to operate, slightly pressurizing the air bag of the cuff via the host computer, so that the ultrasonic device Float on the surface of the object to be tested.
本發明的血壓偵測裝置,包括:壓脈帶、超音波設備、以及耦接至壓脈帶與超音波設備的主機。所述主機經配置以:驅動壓脈帶進行作動,以透過壓脈帶獲得舒張壓與收縮壓;響應於壓脈帶的氣囊氣體釋放完畢,驅動超音波設備進行作動;透過超音波設備獲得血管數據;以及基於舒張壓、收縮壓以及血管數據來計算血管彈性係數,以將血管彈性係數作為後續以超音波設備進行即時血壓量測的參考依據。The blood pressure detection device of the present invention includes: a cuff, an ultrasonic device, and a host coupled to the cuff and the ultrasonic device. The main machine is configured to: drive the cuff to actuate to obtain diastolic and systolic blood pressure through the cuff; to drive the ultrasonic device to actuate in response to the release of the air bag gas of the cuff; to obtain blood vessel pressure through the ultrasonic device data; and calculate the blood vessel elasticity coefficient based on diastolic pressure, systolic blood pressure and blood vessel data, so as to use the blood vessel elasticity coefficient as a reference basis for subsequent real-time blood pressure measurement with ultrasonic equipment.
基於上述,本揭露結合壓脈帶與超音波設備來進行血壓偵測,在同時使用壓脈帶與超音波設備進行血管彈性係數的校正後,便可僅透過超音波設備來進行後續的即時血壓量測。據此,相較於傳統僅使用超音波設備進行量測的方式,本揭露可獲得更精準的量測結果。Based on the above, the present disclosure combines the cuff and ultrasonic equipment for blood pressure detection. After the cuff and ultrasonic equipment are used to calibrate the elastic coefficient of blood vessels, the follow-up real-time blood pressure can be performed only through the ultrasonic equipment. Measure. Accordingly, compared with the traditional method of only using ultrasonic equipment for measurement, the present disclosure can obtain more accurate measurement results.
圖1是依照本發明一實施例的血壓偵測裝置的方塊圖。請參照圖1,血壓偵測裝置100包括主機110、壓脈帶(cuff)120以及超音波設備130。主機110耦接至壓脈帶120以及超音波設備130。FIG. 1 is a block diagram of a blood pressure detection device according to an embodiment of the invention. Referring to FIG. 1 , the blood pressure detection device 100 includes a
主機110包括有控制器111、氣囊驅動模組113以及超音波驅動模組115。控制器111耦接至氣囊驅動模組113以及超音波驅動模組115。控制器111例如為中央處理單元(Central Processing Unit,CPU)、物理處理單元(Physics Processing Unit,PPU)、可程式化之微處理器(Microprocessor)、嵌入式控制晶片、數位訊號處理器(Digital Signal Processor,DSP)、特殊應用積體電路(Application Specific Integrated Circuits,ASIC)或其他類似裝置。透過控制器111來執行一或多個程式碼片段以決定是否致能氣囊驅動模組113或超音波驅動模組115,進而實現動態偵測血壓的方法。The
氣囊驅動模組113以及超音波驅動模組115可以是硬體電路也可以是韌體。氣囊驅動模組113用以控制壓脈帶120的氣囊的充氣及洩氣。超音波驅動模組115用以控制超音波設備130發射超音波訊號。The
超音波設備130為貼片型且設置在壓脈帶120的表面,即壓脈帶120靠近待測物表面的一側。在一實施例中,超音波設備130例如為具有多個(例如12×12個)超音波感測器的超音波陣列。當電流通過超音波感測器,超音波感測器會震動發出超音波訊號然後穿透皮膚到達身體內。當超音波訊號在身體內遇到介面(例如紅血球)時會產生反射及折射等訊號並回傳至超音波感測器,進而來推算獲得血管數據。血管數據包括動脈收縮時的血管直徑以及動脈舒張時的血管直徑。The
血壓偵測裝置100可以是腕戴型血壓偵測裝置100a或是上臂型血壓偵測裝置100b,如圖2及圖3所示。圖2是依照本發明一實施例的腕戴型血壓偵測裝置的示意圖。圖3是依照本發明一實施例的上臂型血壓偵測裝置的示意圖。The blood pressure detection device 100 can be a wrist-worn blood
在圖2中,腕戴型血壓偵測裝置100a用以偵測手腕的橈動脈的脈動,而超音波設備130設置在當壓脈帶120佩帶在手腕上時可使得其貼近使用者(待測物)的手腕的橈動脈的位置。在圖3中,上臂型血壓偵測裝置100b用以偵測手臂內側的肱動脈的脈動,而超音波設備130設置在當壓脈帶120佩帶在上臂上時可使得其貼近使用者(待測物)的上臂的肱動脈的位置。In FIG. 2, the wrist-worn blood
以下搭配血壓偵測裝置100來進一步說明動態偵測血壓的方法各步驟。圖4是依照本發明一實施例的動態偵測血壓的方法流程圖。請參照圖1及圖4,在步驟S405中,經由主機110驅動壓脈帶120進行作動,以透過壓脈帶120獲得舒張壓與收縮壓。例如,控制器111致能氣囊驅動模組113使得壓脈帶120的氣囊進行充氣,之後再慢慢洩氣,據以獲得舒張壓(diastolic pressure)與收縮壓(systolic pressure)。The steps of the method for dynamically detecting blood pressure will be further described below with the blood pressure detection device 100 . FIG. 4 is a flowchart of a method for dynamically detecting blood pressure according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 4 , in step S405 , the
接著,在步驟S410中,響應於壓脈帶120的氣囊氣體釋放完畢,經由主機110驅動超音波設備130進行作動,以自超音波設備130獲得超音波訊號。例如,控制器111可利用壓力感測器來偵測壓脈帶120的氣囊是否充氣或氣體釋放完畢。另外,響應於壓脈帶120的氣囊氣體釋放完畢之後,控制器111可在驅動超音波設備130進行作動之前,先使壓脈帶120的氣囊微加壓,以使超音波設備130浮貼於待測物表面,例如手腕或上臂的皮膚表面。Next, in step S410 , in response to the release of the air bag gas of the
在驅動超音波設備130之後,在步驟S415中,透過超音波設備130獲得血管數據。血管數據包括動脈收縮時的血管直徑以及動脈舒張時的血管直徑。After driving the
之後,在步驟S420中,經由主機110基於舒張壓、收縮壓以及血管數據來計算血管彈性係數,以將血管彈性係數作為後續以超音波設備130進行即時血壓量測的參考依據。Afterwards, in step S420 , the
舉例來說,控制器111可基於下述公式來計算血管彈性係數:
,
其中,
,且
,
α為血管彈性係數(vessel rigidity coefficient),P
d與P
s分別為透過壓脈帶120所獲得的舒張壓與收縮壓,d
d與d
s分別為透過超音波設備130所獲得的動脈舒張時的血管直徑以及動脈收縮時的血管直徑,A
d為動脈舒張時的血管截面積,A
s為動脈收縮時的血管截面積。
For example, the
在獲得血管彈性係數α之後,控制器111將血管彈性係數α作為後續以超音波設備130進行即時血壓量測的參考依據。具體而言,在後續以超音波設備130進行即時血壓量測的過程中,將步驟S405中透過壓脈帶120所獲得的舒張壓P
d以及步驟S420所獲得的血管彈性係數α作為個人的參考定值。接著,便可經由主機110驅動超音波設備130以獲得當下的血管數據,並基於血管彈性係數α以及當下的血管數據,獲得血壓波形。
After obtaining the blood vessel elasticity coefficient α, the
在超音波設備130進行即時血壓量測的過程中,控制器111透過下述公式來獲得經時變化的血管截面積A(t)。
,
其中,d(t)為經時變化的血管直徑。
During the real-time blood pressure measurement by the
接著,控制器111透過下述公式來獲得經時變化的血壓波形P(t)。
,
其中,e為指數,A
d為當下動脈舒張時的血管截面積。
Next, the
綜上所述,本揭露結合壓脈帶與超音波設備來進行血壓偵測,在同時使用壓脈帶與超音波設備進行血管彈性係數的校正後,便可僅透過超音波設備來進行後續的即時血壓量測。即,當受測對象初次使用血壓偵測裝置時,結合壓脈帶與超音波設備來獲得血管彈性係數,之後,便可僅使用超音波設備來進行即時血壓量測,且可在同一受測對象的不同部位中以超音波設備來進行即時血壓量測。據此,由於後續僅透過超音波設備來進行即時血壓量測,故,可節省壓脈帶的氣囊充氣、洩氣的時間。此外,由於事先同時使用壓脈帶與超音波設備進行血管彈性係數的校正,因此,相較於傳統僅使用超音波設備進行量測的方式,本揭露更可提高精準度。To sum up, this disclosure combines the cuff and ultrasonic equipment to detect blood pressure. After using the cuff and ultrasonic equipment to calibrate the elastic coefficient of blood vessels, the follow-up can be performed only through the ultrasonic equipment. Instant blood pressure measurement. That is, when the subject uses the blood pressure detection device for the first time, the blood vessel elasticity coefficient can be obtained by combining the cuff and the ultrasonic equipment, after that, only the ultrasonic equipment can be used for real-time blood pressure measurement, and the blood pressure can be measured in the same test Instant blood pressure measurements are performed with ultrasound equipment in different parts of the subject. According to this, since the real-time blood pressure measurement is performed only through the ultrasonic equipment in the follow-up, the time for inflating and deflating the air bag of the cuff can be saved. In addition, because the cuff and the ultrasonic device are used to calibrate the elastic coefficient of the blood vessel in advance, compared with the traditional method of only using the ultrasonic device for measurement, the present disclosure can improve the accuracy.
100:血壓偵測裝置
100a:腕戴型血壓偵測裝置
100b:上臂型血壓偵測裝置
110:主機
111:控制器
113:氣囊驅動模組
115:超音波驅動模組
120:壓脈帶
130:超音波設備
S405~S420:動態偵測血壓的方法各步驟
100:Blood
圖1是依照本發明一實施例的血壓偵測裝置的方塊圖。 圖2是依照本發明一實施例的腕戴型血壓偵測裝置的示意圖。 圖3是依照本發明一實施例的上臂型血壓偵測裝置的示意圖。 圖4是依照本發明一實施例的動態偵測血壓的方法流程圖。 FIG. 1 is a block diagram of a blood pressure detection device according to an embodiment of the invention. FIG. 2 is a schematic diagram of a wrist-worn blood pressure detection device according to an embodiment of the present invention. FIG. 3 is a schematic diagram of an upper arm blood pressure detection device according to an embodiment of the present invention. FIG. 4 is a flowchart of a method for dynamically detecting blood pressure according to an embodiment of the present invention.
S405~S420:動態偵測血壓的方法各步驟 S405~S420: each step of the method for dynamically detecting blood pressure
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