CN212307843U - Multichannel tissue blood oxygen synchronous noninvasive monitoring device - Google Patents
Multichannel tissue blood oxygen synchronous noninvasive monitoring device Download PDFInfo
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- CN212307843U CN212307843U CN202020801175.3U CN202020801175U CN212307843U CN 212307843 U CN212307843 U CN 212307843U CN 202020801175 U CN202020801175 U CN 202020801175U CN 212307843 U CN212307843 U CN 212307843U
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Abstract
The utility model discloses a synchronous non-invasive monitoring devices of multichannel tissue blood oxygen, include flexible welt and be fixed in light source and photoelectric sensor on the flexible welt are interval distribution in the detection plane of flexible welt and have a plurality of light sources and a plurality of photoelectric sensor, and are a plurality of the light source is with a plurality of photoelectric sensor forms the multichannel monitoring passageway that is used for detecting blood oxygen data between photoelectric sensor, the multichannel monitoring passageway distribute in each region in the flexible welt detection plane. The utility model discloses can realize carrying out the synchronous monitoring to a plurality of monitoring passageways that form between same light source and a plurality of photoelectric sensor on every side rather than, the blood oxygen data of each monitoring passageway of rapid analysis, real-time analysis makes the warning to unusual data, and light leak monitoring problem can be avoided to whole flexible welt, and blood oxygen monitoring accuracy improves greatly.
Description
Technical Field
The utility model relates to a blood oxygen detects technical field, concretely relates to multichannel blood oxygen detection device.
Background
The oxyhemoglobin saturation probe is an instrument for measuring the oxygen concentration in the blood of a human body, namely the oxyhemoglobin saturation, and the sensor consists of a luminous tube and a photoelectric sensor, so that the oxygen content in the blood can be known in time in the surgical operation or the monitoring of critical patients.
Tissue oximetry is a weighted average of the respective blood oxygen saturation levels of arteriole blood, venule blood, and capillary blood in local tissue, and the blood oxygen saturation level of venule blood dominates.
Based on the modified Lambert-Beer law, the method monitors the balance of tissue blood oxygen and cerebral blood oxygen supply and demand by near infrared spectroscopy, is a technique with great prospect developed in recent years, provides a portable, real-time, continuous and simple-operation noninvasive monitoring method for clinic, can be widely used for various occasions of tissue blood oxygen and cerebral blood oxygen monitoring, and obtains tissue blood oxygen and cerebral blood oxygen saturation values which are easy to apply clinically. The near infrared light with the wavelength of 700-1000 nm has good penetrability to human tissues. The near-infrared light is mainly absorbed by oxyhemoglobin and reduced hemoglobin in tissues, the absorption spectra of the oxyhemoglobin and the reduced hemoglobin are obviously different, the maximum absorption spectrum of the oxyhemoglobin is 850-1000 nm, and the maximum absorption spectrum of the reduced hemoglobin is 700-760 nm.
At present, the monitoring of brain blood oxygen and tissue blood oxygen is carried out by adopting a single probe, such as Chongqing Ming xi and Suzhou Aiqin; the single probe can simply monitor the blood oxygen saturation, but has some defects, and is easy to cause inaccurate blood oxygen saturation monitoring because of poor attachment, light leakage and poor position selection, especially for a skin-transplanted patient when the blood oxygen saturation monitoring is carried out on the transplanted part.
Chinese patent document CN 203290911 discloses a reflective multi-sensor array blood oxygen detecting device, which includes an instrument body, a photosensitive sensor array, a light emitter array and a binding band, wherein the light emitter array is distributed around the photosensitive sensor array. The above patent documents have concentrated all light emitters together and matched a plurality of light sensors around the light emitters, and the illumination intensity and the intensity of the received signal are greatly improved compared with a single sensor by increasing the illumination and receiving area, but the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is solved and can only monitor the counter point to the single-end probe among the prior art, can not realize the monitoring to whole face, if the laminating scheduling problem not tight appears, can influence oxyhemoglobin saturation monitoring data's the degree of accuracy, for this reason, the utility model provides a multichannel tissue blood oxygen is synchronous to have and does not have monitoring devices, has portablely, accurate and with low costs in real time.
The utility model adopts the following technical scheme:
the utility model provides a synchronous noninvasive monitoring devices of multichannel tissue blood oxygen, includes flexible welt and is fixed in light source and photoelectric sensor on the flexible welt, it has a plurality of light sources and a plurality of photoelectric sensor to be interval distribution in the detection plane of flexible welt, and is a plurality of the light source is with a plurality of form the multichannel monitoring passageway that is used for detecting blood oxygen data between photoelectric sensor, the multichannel monitoring passageway distribute in each region in the flexible welt detection plane.
The light sources and the photoelectric sensors are distributed in the flexible lining plate in an equally spaced and staggered manner in two vertical directions, the light sources and the photoelectric sensors in two adjacent rows and two columns are distributed in a staggered manner, and the spacing distance is kept consistent.
The light source and the photoelectric sensor form a matrix structure of at least 4x3 type in two perpendicular directions on the flexible lining board.
At least one light source and at least two photosensors are arranged in each row and each column in a matrix structure formed by the light sources and the photosensors, and the two photosensors are located on the same side of the light sources.
The device further comprises:
the MCU processor is used for sending instruction acquisition signals to the plurality of monitoring channels corresponding to the light source and receiving blood oxygen data acquired by the photoelectric sensors in the plurality of monitoring channels, and the MCU processor is used for carrying out data processing on the blood oxygen data of each monitoring channel to obtain blood oxygen saturation synchronous data of the corresponding region of each monitoring channel;
the display screen is used for displaying the blood oxygen saturation value and/or the trend curve of each monitoring channel region;
and the key or the touch key is used for inputting information for monitoring blood oxygen of each monitoring channel to the MCU processor.
The device is also provided with an alarm, and when the blood oxygen saturation value of the adjacent monitoring channel obtained by the MCU processor exceeds the set threshold range, the alarm sends out a warning signal to the outside.
The alarm sends out warning signal for sound signal and/or light signal.
On the other hand, the utility model also provides a multi-channel tissue blood oxygen synchronous non-invasive monitoring method, which is characterized in that a flexible lining plate with a plurality of light sources and a plurality of photoelectric sensors is attached to the part of the patient to be monitored; controlling the light sources of each monitoring area one by one, and sequentially carrying out synchronous tissue blood oxygen monitoring on a plurality of monitoring channels formed between the light sources in the monitoring areas and photoelectric sensors around the light sources; calculating blood oxygen data of multiple monitoring channels in the monitoring area based on a corrected Lambert Beer law (Lambert-Beer) to obtain a blood oxygen saturation value; and comparing the multichannel blood oxygen saturation values in the same monitoring area, and giving rejection or abnormal indication to the value with larger deviation.
The method also comprises the step of comparing the blood oxygen saturation values of a plurality of monitoring channels of the same light source or adjacent light sources, and if the deviation of the blood oxygen saturation values among the plurality of monitoring channels exceeds 3 percentage points or the blood oxygen saturation values are lower, controlling an alarm to send out a warning signal.
The utility model discloses technical scheme has following advantage:
A. the utility model discloses can realize the real-time synchronous monitoring of oxyhemoglobin saturation to a slice area region, the blood oxygen saturation value through a plurality of monitoring passageways that form same light source or adjacent light source closes on the comparison, exist in a plurality of monitoring passageways and close on and detect the numerical value deviation more than 3 percentage points, or wherein a small number detects numerical value lower partially, can correct, or indicate for the user, make more accurate to the blood oxygen monitoring, prevent the oxyhemoglobin saturation monitoring deviation that single monitoring leads to because of the sample problem. The sample problems include, but are not limited to, poor adhesion of the probe to the skin, inaccurate monitoring due to light leakage of the probe, inaccurate monitoring due to special monitoring positions, and the like.
B. The utility model discloses a be the matrix mode on flexible welt and set up a plurality of light sources and photoelectric sensor, a plurality of light sources and a plurality of photoelectric sensor are crisscross between the row and the row of matrix and distribute, form a plurality of monitoring channel structures behind the different combinations, the not good scheduling problem of light leak and laminating that exists among the prior art has been avoided completely, the monitoring degree of accuracy of oxyhemoglobin saturation data has been improved, it is portable, in real time, in succession, easy operation's noninvasive monitoring, can extensively be used for tissue blood oxygen, the various occasions of oxyhemoglobin monitoring, obtain the tissue blood oxygen of easy clinical application, oxyhemoglobin saturation numerical value.
C. The utility model discloses can realize monitoring the difference change of a slice regional oxyhemoglobin saturation, these differences show that local area oxyhemoglobin saturation reduces, or this regional oxyhemoglobin saturation numerical difference is more than 3 percentage point numerical values, or the total oxyhemoglobin saturation quantity difference that detects out is obvious, differentiates through these differences whether the tissue takes place pathological change, like edema, oozing blood, blood vessel, jam etc..
D. The utility model discloses can realize the monitoring of tissue transplantation, cover flexible welt at the tissue transplantation position, the oxyhemoglobin saturation data of monitoring transplantation position tissue borrows this and can judge whether tissue transplantation succeeds, especially to the monitoring of the part transplantation success and the part transplantation failure condition, provides an effectual real-time supervision means for tissue transplantation monitoring.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic plan view of a first distribution of light sources and photosensors in a monitoring device provided by the present invention;
fig. 2 is a schematic plan view of a second distribution of light sources and photosensors in the monitoring device provided by the present invention;
fig. 3 is a schematic plane view of a third distribution of the light source and the photoelectric sensor in the monitoring device provided by the present invention;
fig. 4 is a schematic diagram of the multichannel tissue blood oxygen synchronous noninvasive monitoring provided by the present invention.
The labels in the figure are as follows:
1-flexible lining board; 2-a light source; 3-a photosensor; 4-monitoring the channel.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a synchronous noninvasive monitoring devices of multichannel tissue blood oxygen, include flexible welt 1 and be fixed in light source 2 and photoelectric sensor 3 on the flexible welt 1, formed the probe that detects oxyhemoglobin saturation promptly, be equipped with in the detection plane of flexible welt 1 and be interval distribution and have a plurality of light sources 2 and a plurality of photoelectric sensor 3, form multichannel monitoring channel 4 that is used for detecting blood oxygen data between a plurality of light sources 2 and a plurality of photoelectric sensor 3, multichannel monitoring channel 4 distributes in each region in flexible welt 1 detection plane.
As shown in fig. 1, a plurality of light sources 2 and a plurality of photosensors 3 are respectively disposed in each row and each column of the matrix, the light sources 2 and the photosensors 3 in the same row and the same column are arranged in a staggered and equidistant manner, and the light sources 2 and the photosensors 3 in two adjacent rows and two columns are arranged in a staggered manner and have consistent spacing distances, for example, in fig. 1, the light sources 2 and the photosensors 3 in a row are arranged, the arrangement mode of the fourth row at the bottom is completely the same as that of the second row, the arrangement mode of the first row is completely the same as that of the third row, and both sides of the same light source 2 are respectively provided with the photosensors 3.
The light source at the lower left corner in fig. 1 forms a monitoring channel 4 in the horizontal direction and the vertical direction respectively, so that two blood oxygen monitoring data can be obtained, synchronous detection of the blood oxygen saturation in two different areas is realized, and the detection efficiency is greatly improved. The plurality of light sources 2 form a plurality of such monitoring channels 4 in the detection plane of the flexible lining board 1, thereby realizing blood oxygen detection of different tissues corresponding to a plurality of different monitoring areas covered by the flexible lining board 1. Of course, the corresponding light sources 2 and photosensors 3 in the present invention form at least a 4x3 matrix structure or a 3x4 matrix structure in two perpendicular directions on the flexible substrate 1, i.e. one row or one column less than the 4x4 matrix structure given in the example of fig. 1. The plurality of light sources 2 and the photo sensors 3 are distributed in an array, and a circular matrix or a square matrix may also be used, which is not limited herein. To a monitoring channel that forms between two photoelectric sensor of light source and homonymy, specific calculation oxyhemoglobin saturation's method belongs to prior art, and no longer gives unnecessary details here, the utility model provides a can monitor a plurality of monitoring area's on the area blood oxygen parameter, improved the oxyhemoglobin saturation monitoring efficiency to different tissues greatly.
As shown in fig. 1, the light sources 2 and the photosensors 3 are disposed on the flexible substrate 1 in a square matrix, and the light sources 1 and the photosensors 2 in two adjacent rows and two columns are arranged in a staggered manner. Fig. 1 shows a 4-by-4 matrix structure, and when it is used as the smallest monitoring unit of the monitoring device, the number of light sources and photosensors in the matrix can be further expanded, as shown in fig. 2 and fig. 3, where fig. 2 shows a 4-by-6 matrix structure, fig. 3 shows an 8-by-8 matrix structure, and where the same light source located in the middle of fig. 3 forms 4 monitoring channels 4, and the light source 2 is controlled to be turned on, so that the blood oxygen saturation values of four adjacent areas around the light source can be monitored simultaneously, and the efficiency is higher. For a matrix structure formed by more light sources and photoelectric sensors, the area of a detection part can be larger, the monitoring capability is stronger, and details are not repeated here.
The probe formed in the above-mentioned fig. 1 to fig. 3 is also connected with a subsequent data processor, that is, the monitoring device of the present invention further comprises: the MCU processor, the display screen and the keys or touch keys, and the schematic block diagram is shown in FIG. 4.
The MCU processor is used for sending instruction acquisition signals to a plurality of monitoring channels corresponding to the light source and receiving blood oxygen data acquired by a plurality of photoelectric sensors in the plurality of monitoring channels generated under the same light source, and the MCU processor is used for carrying out data processing and calculation on the blood oxygen data of each monitoring channel to obtain blood oxygen saturation synchronous data of a region corresponding to each monitoring channel;
the display screen is connected with the MCU processor and is used for displaying the blood oxygen saturation synchronous value and/or the trend curve of each monitoring channel region;
and the key or the touch key is used for inputting information for monitoring blood oxygen of each monitoring channel to the MCU processor. Such as controlling the illumination of a light source in a certain monitoring area, or inputting information for detecting a patient, etc.
In order to facilitate the real-time supervision and the warning of some abnormal blood oxygen data, the utility model discloses the last alarm of being connected with the MCU treater that still is equipped with of monitoring devices, when the oxyhemoglobin saturation numerical value of the adjacent monitoring passageway that the MCU treater obtained exceeded the threshold value scope of setting for, the alarm sent warning signal outward. For example, the alarm emits a warning signal such as a sound signal and/or a light signal. The MCU processor and the alarm can adopt the prior art, the monitoring of the light source and the photoelectric sensor on each detection plane on the flexible lining plate is controlled by a program, and the oxygen saturation degree is calculated by the embedded calculation module.
The utility model discloses specific synchronous noninvasive monitoring method as follows:
attaching a flexible liner plate with a plurality of light sources and a plurality of photoelectric sensors to a part of a patient to be monitored; controlling the light sources of each monitoring area one by one, and sequentially carrying out synchronous tissue blood oxygen monitoring on a plurality of monitoring channels formed between the light sources in the monitoring areas and photoelectric sensors around the light sources; calculating blood oxygen data of multiple monitoring channels in the monitoring area based on a corrected Lambert Beer law (Lambert-Beer) to obtain a blood oxygen saturation value; and comparing the multichannel blood oxygen saturation values in the same monitoring area, and giving rejection or abnormal indication to the value with larger deviation. The MCU processor compares the blood oxygen saturation values of a plurality of monitoring channels of the same light source or adjacent light sources through a set program, and controls the alarm to send out a warning signal if the deviation of the blood oxygen saturation values among the monitoring channels exceeds 3 percentage points or the blood oxygen saturation values are low.
Specifically, when the MCU processor drives one light source on the flexible lining plate to be lightened, the two photoelectric sensors simultaneously detect the emergent light intensity of the light source after penetrating through the tissue, so that the absorption variable of the tissue on the light wave is obtained, and the bleeding oxygen saturation value is calculated according to the different absorption rates of the oxygenated hemoglobin and the deoxygenated hemoglobin on the light spectrum and the modified Lambert-Beer law by obtaining the absorption variable of the tissue on two different light waves. After acquiring the blood oxygen saturation values of all possible detection unit results in the area region, carrying out normalization processing, picking out specific points to be excluded as abnormal points, carrying out variable analysis aiming at the variable quantity with a certain rule in the region, and judging the tissue abnormality, such as: edema, oozing blood, vessel occlusion, whether skin or tissue transplantation is successful or not, and the like, particularly the condition of partial transplantation success and partial transplantation failure is monitored, and an effective monitoring means is provided for tissue transplantation monitoring.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. The utility model provides a synchronous noninvasive monitoring devices of multichannel tissue blood oxygen, includes flexible welt and is fixed in light source and photoelectric sensor on the flexible welt, its characterized in that, it has a plurality of light sources and a plurality of photoelectric sensor, a plurality of to be interval distribution in the detection plane of flexible welt the light source is with a plurality of form the multichannel monitoring channel that is used for detecting blood oxygen data between photoelectric sensor, the multichannel monitoring channel distribute in each region in the flexible welt detection plane.
2. The device as claimed in claim 1, wherein the light sources and the photosensors are arranged in a staggered manner at equal intervals in two perpendicular directions of the flexible substrate, and the light sources and the photosensors in two adjacent rows and columns are arranged in a staggered manner with consistent spacing distance.
3. The device as claimed in claim 2, wherein the light source and the photoelectric sensor form a matrix structure of at least 4x3 in two perpendicular directions on the flexible substrate.
4. The device as claimed in claim 2 or 3, wherein at least one light source and at least two photosensors are disposed in each row and each column of the matrix structure formed by the light sources and photosensors, and the two photosensors are located on the same side of the light sources.
5. The device of claim 4, further comprising:
the MCU processor is used for sending instruction acquisition signals to the plurality of monitoring channels corresponding to the light source and receiving blood oxygen data acquired by the photoelectric sensors in the plurality of monitoring channels, and the MCU processor is used for carrying out data processing on the blood oxygen data of each monitoring channel to obtain blood oxygen saturation synchronous data of the corresponding region of each monitoring channel;
the display screen is used for displaying the blood oxygen saturation value and/or the trend curve of each monitoring channel monitoring area;
and the key or the touch key is used for inputting information for monitoring blood oxygen of each monitoring channel to the MCU processor.
6. The device of claim 5, further comprising an alarm, wherein the alarm sends an alarm signal when the oxygen saturation value of the blood in the adjacent monitoring channel obtained by the MCU processor exceeds the set threshold range.
7. The device for multi-channel synchronous noninvasive tissue blood oxygen monitoring as claimed in claim 6, wherein the alarm signal emitted by the alarm is an audio signal and/or a light signal.
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| CN111466923A (en) * | 2020-05-14 | 2020-07-31 | 中科搏锐（北京）科技有限公司 | Multi-channel tissue blood oxygen synchronous non-invasive monitoring device and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111466923A (en) * | 2020-05-14 | 2020-07-31 | 中科搏锐（北京）科技有限公司 | Multi-channel tissue blood oxygen synchronous non-invasive monitoring device and method thereof |
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