Portable blood pressure monitor after the next hot product: Pulse Oximeter (1)

As more and more people are beginning to recognize the seriousness of the health problems and the improvement of living standards, home use portable medical electronics market is experiencing rapid growth, such as a portable blood pressure monitor.

The next wave of growth in the hotspot will be blood glucose and blood oxygen meter, especially portable Pulse Oximeter, although still not universal, but the most growth potential, future market growth is expected to more than 40%.

Wuhan p oxygen pulse meter reference design Board.

In addition to blood pressure, heart rate, respiratory rate and temperature, pulse oximetry (PO) are considered at the 5th most key health indicators.

Hemoglobin (Hb) is an important component of blood cells, it is responsible for transporting oxygen from the lungs to the body of other organizations. Hemoglobin at any one time the amount of oxygen is called oxygen saturation. Oxygen saturation expressed as a percentage, it is the oxygen content of hemoglobin and hemoglobin oxygen carrying capacity. Oxygen saturation is a reflection of human respiratory function and oxygen content is normal and important physiological parameters, it is displayed whether the organizations we human health an important physiological parameters. Serious hypoxia can directly import asphyxia, shock and death and tragedy. In Europe and the United States and other developed countries, the monitoring of the oxygen, oxygen apparatus attaches considerable importance to the already high penetration rate.

Pulse Oximeter provides non-invasive way to measure the oxygen saturation of arterial hemoglobin or saturation.

Pulse Oximeter can also detect arterial pulsation, therefore can also be calculated and inform the patient's heart rate. Measurement of the Pulse Oximeter is in the blood of patients with arterial oxygen content of a medical device.

Oximeter application market is mainly divided into the following areas: the patient in first aid and transportation process, fire rescue, high-altitude flight must monitor blood oxygen, heart disease, hypertension, diabetes, especially the elderly will have respiratory problems, monitoring blood oxygen index can be a good idea of their respiratory, immune system is healthy, the saturation has become an ordinary family daily monitoring of vital physiological parameters; health care personnel in the wards and visits are also blood oxygen as will monitor the project, using the number of pressure over the stethoscope trend; respiratory diseases, especially long-term snoring, use ventilators and oxygen patients, in everyday life using the Oximeter to monitor therapy; outdoor getter, mountaineering enthusiast, sports persons in the movement to use Oximeter, know your own body and take the necessary protective measures.

ADI Asia Pacific medical Enterprise senior business manager Zhou Wen sheng

ADI Asia Pacific medical Enterprise senior business manager Zhou Wen sheng said: "the Oximeter application market will become more and more diversified: not just in the ward and physical examination, etc, but also more to the different forms of high quality and easy-to-use products to enter the personal home use.

We believe its market size, growth will be very significant. ”

At present, the clinic main two ways to detect and oxygen in the blood parameters: first, the invasive arterial blood gas analysis, that is, from the human body's blood vessel extraction, the use of blood gas Analyzer.

This approach not only to get the content of oxygen in the blood, also available blood electrolyte levels, and other biological information. Second, non-invasive detection of arterial oxygen saturation by Oximeter sensors in the finger (or ear). Detection principle based on the premises of the arterial blood, extraction by penetrating pulsatile attenuation of light out of the Exchange components to solution.

Tsinghua University School of Biomedical Engineering Professor Ding Haishu, blood gas analysis though can detect specific major vessels of oxygen saturation in the blood, to a certain extent, indirectly reflect the Organization of oxygenation, but it is not invasive means of real-time, continuous monitoring; fingertip pulse oximetry detection while non-invasive, but gives the arterial oxygen saturation is generally unable to reflect the human local tissue oxygenation.

Currently on the market, most of the Oximeter refers to the Pulse Oximeter-clip, its package providers mainly has following several: Wuhan Li Yuan, Austria microelectronics, TI, ADI, Freescale.

Means the Pulse Oximeter-clip is used to monitor patients ' blood oxygen saturation of non-intrusive instrument, it relies on pulse strength or pulsatile flow to be measured, monitored area must have good blood flow, and any block can result in measurement error.

Pulse Oximeter can also calculate the pulse frequency, so most of the Pulse Oximeter has this feature. Typical Pulse Oximeter measurement range is between 70%-100% saturation, while readings below 70% is not reliable.

Pulse Oximeter works based on the optical absorption during arterial pulse volume changes.

At visible red laser spectroscopy (660 NM) and IR (940 NM) of two alternating light irradiation test area (typically a fingertip or earlobe). In these fluctuations during absorption of light weight and blood oxygen content. Microprocessor calculates the absorption of these two spectral ratio and compares the result with the saturation of the existing memory lane, numerical tables so as to arrive at oxygen saturation.