CN201542615U - Portable network vital sign monitoring instrument - Google Patents

Abstract

The utility model provides a portable network vital sign monitoring instrument, which comprises a central processing unit, an accelerometer, a pressure difference sensor and a pulse oxygen sensor; the accelerometer is connected with the central processing unit; the pulse oxygen sensor is connected with the central processing unit via a digital processing module; the pulse oxygen sensor digitally processes the received signals so as to obtain an oxygen saturation, a pulse rate, and the blood volume of arterial blood; one end of the pressure difference sensor is connected with an oronasal flow breathing catheter while the other end thereof is connected with the central processing unit via an amplification filter circuit; the pressure difference sensor is used for obtaining the breathing rate of the patient; the accelerometer is used for obtaining the moving conditions of the patient, body position and other parameters. The parameters are arithmetically treated through the central processing unit (CPU) and displayed on the color LCD. According to the blood oxygen detectors for different expected purposes, the utility model can be positioned in finger, toes and brow and other body positions in order to perform measurement.

Description

The multi-functional vital signs monitors of a kind of hand held

Technical field

This utility model relates to monitoring class Medical Instruments, is specifically related to the multi-functional vital signs monitors of a kind of hand held.

Background technology

Blood oxygen saturation is HbO2 Oxyhemoglobin (HbO in the human body artery₂) (comprise HbO2 Oxyhemoglobin (HbO with total hemoglobin₂) and the ratio of hemoglobin (Hb), be defined as: SpO₂=[HbO₂/ (HbO₂+ Hb)] 100%, it is the important physiological parameter of reflection tissue oxygen supply situation.In hospital or emergency center, the medical personnel is in corrective surgery, the postoperative transport process or during the first aid patient, often needs human body blood oxygen or breathes patient's blood oxygen saturation.

Before noinvasive blood trouble oxygen saturation monitoring technology is used, main clinically by getting its patient's arterial blood, re-use blood gas analyzer and obtain blood oxygen saturation, this method can not realize continuous monitoring vital sign index-blood oxygen saturation, also can increase the painful and infection probability of patient.Chinese patent CN03148835.8 discloses a kind of " no wound extracorporeal circulation blood oxygen saturation monitoring instrument ", and it adopts the automatic regulatory function of light intensity of the direct closed loop control of computer, adopts the spectrum sensing gauge head to change in order to responsive blood oxygen saturation and pulse.But there is function singleness in it, uses problems such as limited.

The utility model content

The technical problem that this utility model solves is, a kind of on-line monitoring human pulse blood oxygen saturation continuously and blood volume are provided, and available monitoring patient respiratory rate, and the multi-functional vital signs monitors of hand held of moving situation and body position (as falling or road-work).

The purpose of this utility model is achieved in that the multi-functional vital signs monitors of a kind of hand held, it is characterized in that, comprises central processing unit, acceleration transducer, pressure difference transducer and pulse oximetry sensor; Described acceleration transducer links to each other with central processing unit; Described pulse oximetry sensor links to each other with central processing unit by digital signal processing module, described pulse oximetry sensor comprises HONGGUANG, infrared light luminous tube and photosensitive receiving tube, photosensitive receiving tube receives HONGGUANG and infrared light and also converts the signal of telecommunication to, and the signal that receives is obtained the blood oxygen saturation of arterial blood and pulse frequency, blood volume through digital processing; Described pressure difference transducer one end connects mouth and nose stream breathing catheter, and the other end links to each other with central processing unit by the amplification filtering circuit; Described central processing unit also connects speaker, the demonstration of TFT color LCD, button and alarm indicator, data storage and power supply.

Further, described power supply comprises AC-DC power supply adapter, DC-DC power management system and Ni-MH battery charging management system.

Further, described central processing unit links to each other with computer by the USB communication interface.

In this utility model, pulse blood oxygen module and pulse blood oxygen sensing are used to obtain patient's detecting sphygmus and blood oxygen saturation and blood volume; Pressure difference transducer is used for obtaining patient's pulse frequency; Acceleration transducer is used to obtain physiological parameters such as patient's breathing rate, moving situation, then by the central processor CPU calculation process, display parameters on the TFT color LCD, and the alarm limit of each parameter that is provided with according to the user judges whether each parameter surpasses alarm limit, if surpass alarm limit, the multi-functional vital signs monitors of hand held sends chimes of doom and flicker alarm lamp.

Compared to existing technology, the utlity model has following advantage:

1, adopts digital pulse blood oxygen technology, strong, the accuracy height under low perfusion situation of anti-motion artifacts; According to the blood oxygen probe of the different desired use of configuration, the positions such as finger, toe, forehead that can be placed on human body are measured; Adopt the TFT liquid crystal display, make things convenient for the user to monitor screen, and can show more abundant content.

2, adopt pressure difference transducer to detect breathing, fast compared with traditional critesistor sensitivity height, response time.

3, adopt large memories, the historical data of monitoring that can store patient.

4, circuit structure adopts existing mature technology, the characteristics of the maturation that possesses skills, good reliability.

5, adopt acceleration transducer, can detect patient's health changing condition, the protection patient safety.

6, multipurpose can be applied in a plurality of occasions, is particularly suitable in community hospital to patient monitoring with to the record of domestic sleeping apnea syndrome patient's vital sign.

7, have stronger autgmentability,, can realize long distance monitoring by being connected with the PC computer and connecting the Internet.

Description of drawings

Fig. 1 is the system architecture diagram of the multi-functional vital signs monitors of this utility model hand held.

Fig. 2 is the use figure of pulse oximetry sensor luminous tube and photosensitive receiving tube in this utility model.

The specific embodiment

As shown in Figure 1, the multi-functional vital signs monitors of a kind of hand held comprises central processing unit, acceleration transducer, pressure difference transducer and pulse oximetry sensor; Described acceleration transducer links to each other with central processing unit; Described pulse oximetry sensor links to each other with central processing unit by digital signal processing module, described pulse oximetry sensor comprises HONGGUANG, infrared light luminous tube and photosensitive receiving tube, photosensitive receiving tube converts the HONGGUANG and the infrared light of the varying strength that receives to the signal of telecommunication, can access the blood oxygen saturation of arterial blood and pulse frequency, blood volume to the signal that receives through digital processing.Different to optical absorption characteristics according to hemoglobin in the blood with HbO2 Oxyhemoglobin, (red light wavelength is 660nm for HONGGUANG and infrared light, the infrared light wavelength is 940nm) absorbed respectively by human body hemoglobin and HbO2 Oxyhemoglobin through tissue, HbO2 Oxyhemoglobin is less to 660nm red light absorption amount, and more to 940nm infrared Absorption amount; On the contrary, hemoglobin is less to 660nm red light absorption amount, and more to 940nm infrared Absorption amount, and the absorption signal of skin, skeleton, muscle, venous blood etc. is constant.Referring to Fig. 2, photosensitive receiving tube detects by the HONGGUANG at this position (as positions such as finger, tiptoe, ear-lobe, the bridge of the nose, head foreheads) and infrared light intensity and dress and changes the signal of telecommunication into, and the signal of reception passes through digital processing and obtains the blood oxygen saturation of arterial blood and pulse frequency, blood volume.

Described acceleration transducer is used to detect patient's kinestate; use pattern according to patient's setting; can play the changing condition (as falling or road-work) that detects patient's body position or body position, make warning, so that the protection patient safety according to respective conditions.

Described pressure difference transducer one end connects mouth and nose stream breathing catheter, and the other end links to each other with central processing unit by the amplification filtering circuit.It is to be connected to patient's nasal openings by trachea that mouth and nose stream is breathed principle, an other end of trachea is connected with the differential pressure pick-up of little air-flow, patient respiratory flow flows to differential pressure pick-up by trachea, differential pressure pick-up just detects the patient respiratory situation, the voltage signal of differential pressure pick-up output becomes digital signal through amplification, filtering, digital-to-analogue conversion then, and the software algorithm by the central processing unit setting obtains breathing rate.

Described central processing unit also connects speaker, the demonstration of TFT color LCD, button and alarm indication, data storage and power supply.Described central processing unit links to each other with computer by the USB communication interface, uses more flexible.

The operation principle of the multi-functional vital signs monitors of this hand held is: by pulse blood oxygen module and blood oxygen transducer (containing probe), pressure difference transducer, acceleration transducer obtains patient's detecting sphygmus and blood oxygen saturation respectively, pulse frequency, the blood volume, breathing rate, physiological parameters such as moving situation, then by the central processor CPU calculation process, display parameters on the TFT color LCD, and the alarm limit of each parameter that is provided with according to the user judges whether each parameter surpasses alarm limit, if surpass alarm limit, the multi-functional vital signs monitors of this hand held sends chimes of doom and flicker alarm lamp, takes appropriate measures with caution user and patient.Simultaneously, the multi-functional vital signs monitors of hand held can be kept at the data storage the inside gathering every physiological parameter, these historical datas can export to the PC computer for user's inquiry with by USB interface, analyze and check with the data analysis software on the PC, and can print trend data and trend figure.

The power supply that the multi-functional vital signs monitors of this hand held is adopted is AC-DC power supply adapter, DC-DC power management system and/or Ni-MH battery charging management system.For example can also can use the power supply of AC-DC power supply adapter by 4 joint AA battery (comprising non-rechargeabel alkaline battery and chargeable Ni-MH battery) power supplies.When plugging interchange-power supply adaptor, can carry out the real-time online charging to chargeable Ni-MH battery, the intelligent charge management system of the multi-functional vital signs monitors of hand held can be made judgement to the true and false of rechargeable battery, if real rechargeable battery then begins charging; If false rechargeable battery then stops charging.By intelligentized Charge Management, allow the user determine charging or automated intelligent decision charging, reduce cell charging times, improve battery service life, reduce battery altering and abandon quantity, reduce customer using cost, play the effect of energy-conserving and environment-protective.Battery charging management system can also detect in real time battery electric quantity, and shows on LCD, when battery electric quantity is low, can preserve data after shutdown automatically.

The multi-functional vital signs monitors of this hand held can be adjusted according to the position of user's place machine, so that the user can monitor display screen clearer, more easily.Can use in each section office of hospital and clinic the vital sign of corrective surgery or postoperative is guarded, the monitoring of use vital sign in to patient's transport process, the detection and the monitoring of use vital sign when the first aid patient, the vital sign that also can be used for domestic sleeping apnea syndrome patient in when sleep record patient, and other has the patient who needs to detect blood oxygen or breathing.

Need to prove at last, above embodiment is only in order to illustrate technical scheme of the present invention but not the restriction technologies scheme, although the applicant has been described in detail the present invention with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, those are made amendment to technical scheme of the present invention or are equal to replacement, and do not break away from the aim and the scope of the technical program, all should be encompassed in the middle of the claim scope of the present invention.

Claims (3)

1. the multi-functional vital signs monitors of hand held is characterized in that, comprises central processing unit, acceleration transducer, pressure difference transducer and pulse oximetry sensor; Described acceleration transducer links to each other with central processing unit; Described pulse oximetry sensor links to each other with central processing unit by digital signal processing module, described pulse oximetry sensor comprises HONGGUANG and infrared light luminous tube and photosensitive receiving tube, photosensitive receiving tube receives HONGGUANG and infrared light and also converts the signal of telecommunication to, and the signal that receives is obtained the blood oxygen saturation of arterial blood and pulse frequency, blood volume through digital processing; Described pressure difference transducer one end connects mouth and nose stream breathing catheter, and the other end links to each other with central processing unit by the amplification filtering circuit; Described central processing unit also connects speaker, the demonstration of TFT color LCD, button and alarm indicator, data storage and power supply.

2. the multi-functional vital signs monitors of hand held according to claim 1 is characterized in that described power supply comprises AC-DC power supply adapter, DC-DC power management system and Ni-MH battery charging management system.

3. the multi-functional vital signs monitors of hand held according to claim 1 is characterized in that, described central processing unit links to each other with computer by the USB communication interface.

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