CN201664305U - High-precision blood oxygen probe - Google Patents

High-precision blood oxygen probe Download PDF

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Publication number
CN201664305U
CN201664305U CN2010201064169U CN201020106416U CN201664305U CN 201664305 U CN201664305 U CN 201664305U CN 2010201064169 U CN2010201064169 U CN 2010201064169U CN 201020106416 U CN201020106416 U CN 201020106416U CN 201664305 U CN201664305 U CN 201664305U
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China
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probe
precision
memory chip
high
oxygen probe
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CN2010201064169U
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Chinese (zh)
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徐春晖
王干兵
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深圳市索莱瑞医疗技术有限公司
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Abstract

The utility model discloses a high-precision blood oxygen probe which includes a probe, a cable and a plug mutually connected in sequence; the key point of the high-precision blood oxygen probe is as follows: a digital memory chip is also arranged in the high-precision blood oxygen probe. The digital memory chip which is planted in the high-precision blood oxygen probe can be a random memory chip, a flash memory chip or a programmable read-only chip, etc. The chip can be arranged on the probe or a connecting wire used by the probe. The digital memory chip can be used for storing various relevant information of the probe such as the wavelength value, wavelength compensation curve, R curve of the probe, etc, thereby providing conditions for a blood oxygen instrument to detect the variable quantity of forward voltage drop of a LED in the high-precision blood oxygen probe through a detection circuit and transfer relevant data in the digital memory chip to re-adjust the peak wavelength value of the LED to realize the real time compensation of the peak wavelength of the probe.

Description

一种高精度血氧探头 High Accuracy oxygen probe

技术领域 FIELD

[0001] 本实用新型涉及一种探头,尤其是涉及一种高精度血氧探头。 [0001] The present invention relates to a probe, particularly to a high accuracy oxygen probe. 背景技术 Background technique

[0002] 脉搏血氧仪主要用于测量变化血流的特质,包括动脉血氧饱和度、心脏的脉率等等。 [0002] The pulse oximeter used to measure changes in blood flow the major characteristics including arterial blood oxygen saturation, heart pulse rate and the like. 这些特质的测量可以通过一个无创的血氧探头来实现。 Measuring these qualities can be achieved by a non-invasive blood oxygen sensor. 通过探头发出的光穿透人体的一部分有血灌注的组织,然后脉搏血氧仪根据光的吸收量来计算出血流的各种特质,比如, 动脉血氧饱和度。 Penetrate the body portion of the light emitted by the probe's blood perfused tissue, then the pulse oximeter to calculate various characteristics of the blood flow based on the amount of light absorbed, for example, arterial oxygen saturation. 为了测量人体的组织的动脉血氧饱和度,探头需要两种不同的波长的光(红光LED和红外光LED)来满足脉搏血氧仪的计算要求。 In order to measure arterial oxygen saturation of the body tissue, the probe requires two light (red LED and infrared LED) different wavelengths to meet the computing requirement of a pulse oximeter. 因此,血氧饱和度的计算精度就取决于已知的LED波长。 Thus, blood oxygen saturation calculation accuracy depends on the wavelength of LED is known. 然而,每个LED的波长是不尽相同的,甚至同一个LED波长在不同环境、不同时段也是会有变化,发生波长偏移的。 However, the wavelength of each LED is not the same, even with a LED wavelength will also vary in different environments, different times, wavelength shift occurs. 因此,脉搏血氧仪血氧饱和度的计算精度会由于血氧探头的波长的偏移而产生一定的误差。 Therefore, the calculation accuracy of the saturation pulse oximetry oxygen due to the oxygen probe wavelength shift generated some errors. 对于血氧探头波长的不同,主要的一种解决方案就是在探头上增加一个识别电阻,这个识别电阻主要用来区分探头所对应的波长。 Oxygen probe for different wavelengths, the main one solution is to add a resistor in the probe identified, the identification resistor is mainly used to distinguish the wavelength corresponding to the probe. 脉搏血氧仪工作时,先检测这个电阻的值,然后根据电阻的值来决定血氧饱和度计算时所采用的波长值,这种方法使制造商不需花费高成本即可筛选出唯一波长的LED。 When the pulse oximeter work, the first detection value of the resistor, and determines the oxygen saturation value at the wavelength used for such purposes in accordance with the value of the resistor, this method enables manufacturers to filter out without spending the high cost of a unique wavelength the LED. 然而,虽然识别电阻能够使血氧探头不再局限于单一的一个波长值,但是血氧探头的波长在测量使用时会随探头驱动电流、环境温度等因素的不同而变化,因此,这种方法并不能完全解决血氧波长变化的问题。 However, although the oxygen probe can be made of the identification resistor is no longer confined to a single wavelength value, but the oxygen probe wavelength may be different factors varies current, ambient temperature, driving with the probe used in the measurement, and therefore, this method does not completely solve the problem of oxygen wavelength change. 因为血氧探头工作时波长的偏移主要是由于温度的变化所引起的,因此,本实用新型主要针对对血氧探头工作时可能发生的波长偏移,利用温度、电压、波长三者之间的关系来实现对血氧探头波长的实时补偿,从而弥补探头因波长变化而导致测量误差的缺陷。 Because oxygen probe working wavelength shift is mainly caused by the change in temperature, and therefore, the present invention is aimed at a wavelength that may occur during operation of the oxygen probe offset, between the use of temperature, voltage, three wavelength relation to real-time compensation for oxygen probe wavelength, the wavelength variation due to the probe so as to compensate for the measurement error cause defects.

实用新型内容 SUMMARY

[0003] 本实用新型所要解决的技术问题是,提供一种高精度血氧探头。 [0003] The present invention is to solve the technical problem is to provide a high accuracy oxygen probe.

[0004] 为解决以上技术问题,本实用新型的技术方案是:一种高精度血氧探头,包括相互依次连接的探头、电缆线和插头,其特征是:在所述高精度血氧探头中还设有数字记忆芯片。 [0004] To solve the above technical problem, the technical solution of the present invention is: a high-precision oxygen probe, the probe including, cables and plugs are sequentially connected to each other, characterized in that: the precision of the oxygen probe There is also a digital memory chip.

[0005] 作为本实用新型的改进,所述数字记忆芯片设置在所述探头、所述插头或者是用于所述探头的连接线上。 [0005] As the present invention to improve the digital memory chip is disposed in the probe, or the plug is connected to said probe line.

[0006] 作为本实用新型进一步的改进,所述探头中设有位移加速度计,所述的位移加速度计中设有探头运动干扰消除装置,所述探头运动干扰消除装置与监护系统相连接。 [0006] As a further improvement of the present novel and practical, the probe having a displacement accelerometer, the accelerometer is provided with a displacement movement of the probe in an interference cancellation apparatus, the interference canceller and the probe movement monitoring system connected.

[0007] 作为本实用新型更进一步的改进,所述的数字记忆芯片可以是随机存储芯片、闪存芯片或者是可编程只读芯片。 [0007] As a further improvement of the present invention, the digital memory chip may be a random access memory chip, flash memory, programmable read-only chip or chips.

[0008] 作为本实用新型再进一步的改进,所述探头中设有红光LED和红外光LED。 [0008] The present novel further practical improvement, the probe is provided with a red LED and infrared LED.

[0009] 所述的高精度血氧探头中植入了一个数字记忆芯片,该记忆芯片可以是随机存储芯片、闪存芯片或者是可编程只读芯片等。 [0009] The precision of the oxygen probe implanted in a digital memory chip, the chip may be a random access memory chip, flash memory, programmable read-only chip or chips and the like. 该芯片还可以放置在探头上,或者探头使用的连接线上。 The chip can also be placed on the probe, or the probe connector lines used. 这个数字记忆芯片可以用来储存探头的各种相关信息,比如探头的波长值、波长补偿曲线、R曲线。 This number memory chips can be used to store a variety of information about the probe, such as probe wavelength value, the wavelength compensation curve, R curve.

[0010] 在所述的高精度血氧探头的探头部分植入一个位移加速度计,所述位移加速度计中设有探头运动干扰消除装置,所述位移加速度计能够感知探头的运动。 [0010] accelerometer implanted in a displacement of the probe portion of the oxygen probe with high accuracy, the displacement movement of the probe is provided with an accelerometer interference elimination device, the accelerometer can sense the displacement movement of the probe. 当人体运动时,探头上的位移加速度计就能够感知出运动的发生,并通过探头运动干扰消除装置将此告诉监护系统,这时监护系统将调用相应的算法对此运动干扰进行处理,从而确保血氧测试的准确性。 When the human body movement, displacement accelerometer on the probe will be able to perceive the movement takes place, and this tells monitoring system eliminates interference device through the probe movement, then the monitoring system will call the appropriate algorithm for processing this movement interference, thus ensuring oxygen accuracy of the test.

[0011] 所述的高精度血氧探头的光源由两个发光二极管组成,发光二极管工作时功耗大部分转化成热量,只有少部分转换成光能,形成发光现象。 [0011] The source of the oxygen probe with high accuracy by the two light-emitting diodes, mostly converted into heat power, only a small portion is converted into light, a light emitting diode emitting phenomenon work. 通过不同的电流,LED的PN结将会产生不同的热量;当使LED通过恒定电流时,LED的PN结温度将随环境温度变化。 By different currents, LED PN junction will produce different amounts of heat; when a constant current through the LED, LED PN junction temperature will change with the ambient temperature.

[0012] 探头波长补偿的基本步骤如下: [0012] The basic steps of the probe wavelength compensation follows:

[0013] 1、利用二极管的特性,在不同的环境温度下,通过测试LED的正向压降的变化,建立起LED正向压降与LED的峰波长之间的变化关系。 The relationship between the peak wavelength variation [0013] 1, using the diode characteristics under different ambient temperature, the forward voltage drop of LED test, to establish the LED forward voltage drop of the LED.

[0014] 2、将探头工作温度范围内不同温度下对应的LED的峰波长数值储存在探头插头中的记忆芯片中,供血氧仪工作时调用。 [0014] 2, corresponding to different temperatures within the operating temperature range of the probe LED's peak wavelength values ​​stored in memory chips in the probe in the plug, when the call for the oximeter work.

[0015] 3、探头工作时,通过血氧仪上的检测电路,检测出探头LED的正向压降的变化量, 然后根据记忆芯片中的变换关系式,转换成LED波长的变化量来重新调整LED的峰波长值, 从而达到探头峰波长实时补偿的目的。 [0015] 3, the probe working, by the detection circuit in the oximeter, the amount of the detected forward voltage drop of LED probe, and memory chips in accordance with the conversion relation, the change amount of the LED is converted into wavelength re adjust the value of the LED peak wavelength, the peak wavelength of the probe so as to achieve real-time compensation.

[0016] 通过实施以上的技术方案能够实现对血氧探头波长偏移的补偿,从而达到校准探头,保证脉搏血氧仪的测量精度。 [0016] The above embodiment can be achieved by the technical solution of the oxygen probe wavelength shift compensation to achieve the calibration of the probe, to ensure accuracy of a pulse oximeter.

附图说明 BRIEF DESCRIPTION

[0017] 下面结合说明书附图对本实用新型做进一步详细的描述,其中: [0017] The following description in conjunction with the accompanying drawings of the present invention in further detail, wherein:

[0018] 图1为本实用新型的系统结构图。 [0018] Figure 1 is a system configuration diagram invention.

具体实施方式 Detailed ways

[0019] 如图1所示,一种高精度血氧探头,包括相互依次连接的探头、电缆线和插头,其特征是:在所述高精度血氧探头中还设有数字记忆芯片;所述数字记忆芯片设置在所述插头上,所述的数字记忆芯片可以是随机存储芯片、闪存芯片或者是可编程只读芯片;所述探头中设有位移加速度计,此外还设有红光LED和红外光LED。 [0019] As shown in FIG 1, a high-precision oxygen probe, the probe including, cables and plugs are sequentially connected to each other, wherein: the oxygen probe further provided with high-precision digital memory chips; the said digital memory chip is disposed on said plug, said digital memory chip may be a random access memory chip, flash memory, programmable read only chip or chips; displacement of the probe is provided with an accelerometer, also has a red LED and infrared LED.

[0020] 必须指出,上述实施例只是对本实用新型做出的一些非限定性举例说明。 [0020] It must be noted, the above-described embodiments are merely some non-limiting examples of the present invention to make explanation. 但本领域的技术人员会理解,在没有偏离本实用新型的宗旨和范围下,可以对本实用新型做出修改、替换和变更,这些修改、替换和变更仍属本实用新型的保护范围。 Those skilled in the art will appreciate that, in the present invention without departing from the spirit and scope of, the present invention can make modifications, substitutions and alterations, these modifications, substitutions and changes in the scope of protection is still present invention.

4 4

Claims (9)

  1. 一种高精度血氧探头,包括相互依次连接的探头、电缆线和插头,其特征是:在所述高精度血氧探头中还设有数字记忆芯片。 A high-precision oxygen probe, the probe including, cables and plugs are sequentially connected to each other, wherein: the oxygen probe further provided with high-precision digital memory chips.
  2. 2.根据权利要求1所述的高精度血氧探头,其特征是:所述数字记忆芯片设置在所述探头、所述插头或者是用于所述探头的连接线上。 According to claim precision of the oxygen probe 1, characterized in that: the digital memory chip is provided in the probe, or for the connection of the plug of the probe line.
  3. 3.根据权利要求1或者2所述的高精度血氧探头,其特征是:所述探头中设有位移加速度计。 According to claim 3 or precision of the oxygen probe 1, characterized in that: said probe having a displacement accelerometer.
  4. 4.根据权利要求3所述的高精度血氧探头,其特征是:所述的位移加速度计中设有探头运动干扰消除装置,所述探头运动干扰消除装置与监护系统相连接。 According to claim precision of the oxygen probe 3, characterized in that: said accelerometer displacement movement of the probe is provided with an interference cancellation apparatus, the interference canceller and the probe movement monitoring system connected.
  5. 5.根据权利要求4所述的高精度血氧探头,其特征是:所述的数字记忆芯片可以是随机存储芯片、闪存芯片或者是可编程只读芯片。 The oxygen probe accurately claim 4, characterized in that: said digital memory chip may be a random access memory chip, flash memory, programmable read-only chip or chips.
  6. 6.根据权利要求5所述的高精度血氧探头,其特征是:所述探头中设有红光LED和红外光LED。 The oxygen probe accurately claim 5, characterized in that: said probe is provided with a red LED and infrared LED.
  7. 7.根据权利要求1或者2所述的高精度血氧探头,其特征是:所述的数字记忆芯片可以是随机存储芯片、闪存芯片或者是可编程只读芯片。 The precision of the oxygen probe 1 or claim 2, wherein: said digital memory chip may be a random access memory chip, flash memory, programmable read-only chip or chips.
  8. 8.根据权利要求1或者2所述的高精度血氧探头,其特征是:所述的数字记忆芯片为储存有所述探头的波长值、波长补偿曲线和/或R曲线信息的芯片。 According to claim 1 or precision of the oxygen probe 2, characterized in that: said digital memory chips to store said probe has a wavelength value, the wavelength compensation curve and / or chips R curve information.
  9. 9.根据权利要求1或者2所述的高精度血氧探头,其特征是:所述探头中设有红光LED 和红外光LED。 According to claim 9 or precision of the oxygen probe 1, characterized in that: said probe is provided with a red LED and infrared LED.
CN2010201064169U 2010-01-28 2010-01-28 High-precision blood oxygen probe CN201664305U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105592780A (en) * 2013-09-02 2016-05-18 莱夫毕恩技术有限公司 Bodily worn multiple optical sensors heart rate measuring device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105592780A (en) * 2013-09-02 2016-05-18 莱夫毕恩技术有限公司 Bodily worn multiple optical sensors heart rate measuring device and method

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