Ceiling-type patient bio-signal monitoring system and patient bio-signal monitoring method using same

Abstract

The present invention relates to a ceiling-type patient bio-signal monitoring system and a patient bio-signal monitoring method using same, wherein the ceiling-type patient bio-signal monitoring system functions as a CCTV and, when it is necessary to measure bio-signals of a patient, identifies the patient through real-time face tracking of the patient, measures an optical signal of the patient in a non-contact manner, and measures bio-signals such as heart rate, respiration, and oxygen saturation through image analysis. To this end, the present invention provides a ceiling-type patient bio-signal monitoring system characterized by comprising: a sensor unit for irradiating a patient with light; an analysis unit for analyzing images and bio-signals of the patient on the basis of reflected light that is light emitted from the sensor unit and reflected by the patient; and a bio-signal output unit for outputting the bio-signals of the patient analyzed by the analysis unit, wherein the bio-signals include the heart rate, respiration, and oxygen saturation of the patient.

Description

Ceiling-type patient vital sign monitoring system and patient vital sign monitoring method using the same

[0001] The present invention relates to a ceiling-type patient vital sign monitoring system and a patient vital sign monitoring method using the same, and more particularly, to a ceiling-type patient vital sign monitoring system that performs CCTV functions while simultaneously identifying a patient through real-time face tracking when it is necessary to measure a patient's vital sign, and measuring the patient's optical signal in a non-contact manner and measuring vital signs such as heart rate, respiration, and oxygen saturation through image analysis, and a patient vital sign monitoring method using the same.

[0002] Patient monitoring systems are commonly used in hospital wards and recovery rooms to measure patients' vital signs and changes in their condition.

[0003] At this time, it provides a function to continuously monitor vital signs such as heart activity, blood pressure, blood oxygen saturation, and body temperature by attaching a measurement sensor to a part of the patient's body, and in the case of medical institutions, the demand for patient monitoring devices is steadily increasing as the demand for oxygen saturation meters has rapidly increased since the outbreak of coronavirus infection patients.

[0004] These patient monitoring devices are mainly used by attaching and wearing measurement sensors on the patient's body, which can cause various problems when measuring vital signs.

[0005] In addition, continuous monitoring may be difficult due to poor sensor fit caused by patient movement, and errors may occur in measured values ​​when there is foreign matter in the attachment area or in a high-humidity environment.

[0006] In addition, attaching or wearing a sensor on a patient can cause discomfort to the patient when replacing or removing it, and if attached too tightly, the risk of developing bedsores increases, which can affect the safety of the patient. In addition, in the case of patients with infectious diseases, there is a risk of secondary infection through contact with medical staff.

[0007] These patient monitoring devices are large and heavy, so they take up a lot of space when placed in a hospital room. Since one device must be placed per patient, the space taken up per patient is large, and there are also cost issues that arise when the equipment must be purchased for the number of patients.

[0008] To solve the above problems, conventional technologies developed include technologies for measuring pulse and respiration using infrared (IR) sensors and bio-radar (RADAR) sensors.

[0009] However, although these conventional technologies solve problems such as measurement errors and infections that arise from the contact method, the measurable bio-signal elements are limited to pulse and respiration rate, making them insufficient to replace patient monitoring devices.

[0010] Therefore, it is necessary to develop a technology that can measure various biosignals that can replace patient monitoring devices while solving the problems of existing equipment.

[0011] Accordingly, the present invention relates to a ceiling-type patient vital sign monitoring system and a patient vital sign monitoring method using the same, and more specifically, to a ceiling-type patient vital sign monitoring system that identifies a patient through real-time face tracking when it is necessary to measure a patient's vital sign while performing CCTV functions, measures the patient's optical signal in a non-contact manner, and measures vital signs such as heart rate, respiration, and oxygen saturation through image analysis, and a patient vital sign monitoring method using the same.

[0012] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0013] In order to solve the above-described problem, the present invention provides a ceiling-type patient vital sign monitoring system, comprising: a sensor unit that irradiates light to a patient; an analysis processing unit that analyzes an image and vital sign of the patient based on reflected light reflected by the patient from the light irradiated by the sensor unit; and a vital sign output unit that outputs the vital sign of the patient analyzed by the analysis processing unit, wherein the vital sign includes the heart rate, respiration, and oxygen saturation of the patient.

[0014] Here, the sensor unit may include a light irradiation unit that irradiates light to the patient, and a light receiving unit that receives reflected light reflected from the patient.

[0015] In addition, the light irradiation unit may include a first laser diode light source module that irradiates a first laser diode light of a first wavelength, a second laser diode light source module that irradiates a second laser diode light of a second wavelength, and an LED light source module that irradiates an LED light of a third wavelength.

[0016] In addition, the first laser diode light source module may include a first light source irradiation unit to which the first laser diode light is irradiated, a first collimator unit arranged in a front region of the first light source irradiation unit to align the first laser diode light in parallel, and a first filter unit arranged in a front region of the first collimator unit to adjust the intensity of the first laser diode light.

[0017] In addition, the receiving unit may include a lens through which the reflected light passes, a visual image sensor that collects the first reflected light, which is the reflected light of the first laser diode light, a near-infrared image sensor that collects the second reflected light, which is the reflected light of the second laser diode light, and the third reflected light, which is the reflected light of the LED light, and a dichroic mirror that reflects the second reflected light and the third reflected light and guides them toward the near-infrared image sensor, and passes the first reflected light and guides it to the visual image sensor.

[0018] In addition, a sensor unit driving module that rotates the angle of the sensor unit may be further included.

[0019] In addition, the present invention provides a method for monitoring a patient's vital signs using a ceiling-type patient vital signs monitoring system, comprising: a sensing step in which a sensor unit irradiates light to a patient; an analysis processing step in which an analysis processing unit analyzes an image and vital signs of a patient based on reflected light reflected by the patient from the light irradiated by the sensor unit; and a vital signs output step in which a vital signs output unit outputs the vital signs of the patient analyzed by the analysis processing unit, wherein the vital signs analyzed in the analysis processing step include a heart rate, respiration, and oxygen saturation of the patient.

[0020] Here, the sensing step may include a light irradiation step in which a light irradiation unit irradiates light to the patient, and a reception step in which a reception unit receives reflected light reflected from the patient.

[0021] In addition, the light irradiation step may include a first light source module irradiation step in which a first laser diode light source module irradiates a first laser diode light of a first wavelength, a second light source module irradiation step in which a second laser diode light source module irradiates a second laser diode light of a second wavelength, and a third light source module irradiation step in which an LED light source module irradiates an LED light of a third wavelength.

[0022] In addition, the first light source module irradiation step may include a first light source irradiation step in which a first light source irradiation unit irradiates the first laser diode light to the patient, a first light alignment step in which a first collimator unit is arranged in a front region of the first light source irradiation unit to align the first laser diode light in parallel, and a first filtering step in which a first filter unit is arranged in a front region of the first collimator unit to adjust the intensity of the first laser diode light.

[0023] In addition, the receiving step may include a reflection light moving step in which the reflection light passes through a lens, a reflection light guiding step in which a dichroic mirror reflects the second reflection light, which is the reflection light of the second laser diode light, and the third reflection light, which is the reflection light of the LED light, and guides them toward a near-infrared image sensor, and guides the first reflection light, which is the reflection light of the first laser diode light, to the visual image sensor, a first reflection light collecting step in which the near-infrared image sensor collects the second reflection light and the third reflection light, and a second reflection light collecting step in which the visual image sensor collects the first reflection light.

[0024] Additionally, the sensor unit driving module may further include a sensor unit driving step for rotating the angle of the sensor unit.

[0025] The ceiling-type patient vital sign monitoring system according to the present invention and the patient vital sign monitoring method using the same have the following effects.

[0026] First, when it is necessary to measure the patient's vital signs while performing CCTV functions, there is an advantage in that the patient can be identified through real-time facial tracking, the patient's optical signals can be measured in a non-contact manner, and vital signs such as heart rate, respiration, and oxygen saturation can be measured through image analysis.

[0027] Second, it has the advantage of being able to solve problems such as measurement errors, safety, and risk of secondary infection that arise from existing contact-type sensors.

[0028] Third, compared to existing contact-type sensors that have significant space and cost constraints and must be equipped for each patient, there is an advantage in that only one sensor can be installed in a hospital room to measure the patient's vital signs through real-time tracking.

[0029] Fourth, it has the advantage of being simple and easy to measure, with good visibility, and being able to resolve space and cost constraints because it can display individual patient measurements on a single monitor.

[0030] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0031] Figure 1 is a schematic diagram illustrating the configuration of a ceiling-type patient vital sign monitoring system according to the present invention.

[0032] FIG. 2 is a drawing schematically illustrating the configuration of a sensor unit of a ceiling-type patient vital sign monitoring system according to the present invention.

[0033] FIG. 3 is a schematic diagram illustrating the configuration of a first laser diode light source module of a ceiling-type patient biosignal monitoring system according to the present invention.

[0034] FIG. 4 is a schematic diagram illustrating the configuration of a receiving unit of a ceiling-type patient vital sign monitoring system according to the present invention.

[0035] FIG. 5 is a schematic diagram illustrating the configuration of an analysis processing unit of a ceiling-type patient biosignal monitoring system according to the present invention.

[0036] FIG. 6 is a drawing illustrating an example of an image acquired by a visual and near-infrared image sensor of a ceiling-type patient vital sign monitoring system according to the present invention.

[0037] FIG. 7 is a diagram illustrating an example in which a first bio-signal calculation unit of a ceiling-type patient bio-signal monitoring system according to the present invention calculates a patient's heart rate and respiratory rate based on signal data.

[0038] FIG. 8 is a diagram illustrating an example in which a second biosignal calculation unit of a ceiling-type patient biosignal monitoring system according to the present invention calculates a patient's oxygen saturation based on signal data.

[0039] FIG. 9 is a schematic diagram illustrating an example of the sensor unit rotating by driving the sensor unit driving module of the ceiling-type patient vital sign monitoring system according to the present invention.

[0040] FIG. 10 is a drawing illustrating steps of a patient vital sign monitoring method according to the present invention.

[0041] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals designate like elements throughout the specification.

[0042] The sizes and shapes of components depicted in the drawings attached to this specification may be exaggerated for clarity and convenience of explanation. It should be noted that identical components are sometimes depicted with the same reference numerals in each drawing. Furthermore, detailed descriptions of functions and structures of known technologies that may unnecessarily obscure the gist of the present invention may be omitted.

[0043] The terminology used herein is used to describe specific embodiments and is not intended to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly dictates otherwise. Furthermore, whenever a part of this specification is referred to as "comprising" a component, this means that it may also include other components, unless otherwise specifically stated.

[0044] When a component is referred to as being connected or connected to another component, it should be understood that it may be directly connected or connected to that other component, but that other components may also exist in between. Conversely, when a component is referred to as being directly connected or connected to another component, it should be understood that there are no other components in between. Other expressions used to describe relationships between components should be interpreted similarly.

[0045] The terms "top," "bottom," "upper surface," "lower surface," or "upper" and "lower surface" as used herein are used to distinguish the relative positions of components. For example, for convenience, the upper surface in a drawing may be referred to as "upper surface" and the lower surface in the drawing as "lower surface." In practice, the upper surface may be referred to as "lower surface" and the lower surface as "upper surface" without departing from the scope of the present invention.

[0046] Terms containing ordinal numbers, such as "first," "second," etc., described herein may be used to describe various components; however, these components are not limited by these terms. These terms are merely used to distinguish each component from another, and are not limited by the manufacturing order. Furthermore, the names may not be consistent between the detailed description of the invention and the claims.

[0047] All terms, including technical or scientific terms, used herein, unless otherwise defined, have the same meaning as commonly understood by those of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0048] Hereinafter, in order to explain a ceiling-type patient vital sign monitoring system and a patient vital sign monitoring method using the same according to an embodiment of the present invention, the present invention will be described with reference to drawings.

[0049] FIG. 1 is a drawing schematically showing the configuration of a ceiling-type patient vital sign monitoring system according to the present invention, FIG. 2 is a drawing schematically showing the configuration of a sensor unit (1000) of a ceiling-type patient vital sign monitoring system according to the present invention, FIG. 3 is a drawing schematically showing the configuration of a first laser diode light source module (1110) of a ceiling-type patient vital sign monitoring system according to the present invention, FIG. 4 is a drawing schematically showing the configuration of a receiver unit (1200) of a ceiling-type patient vital sign monitoring system according to the present invention, FIG. 5 is a drawing schematically showing the configuration of an analysis processing unit (2000) of a ceiling-type patient vital sign monitoring system according to the present invention, FIG. 6 is a drawing schematically showing an example of an image acquired by a visual image sensor (1230) and a near-infrared image sensor (1220) of a ceiling-type patient vital sign monitoring system according to the present invention, and FIG. 7 is a drawing schematically showing a first vital sign calculation unit (2310) of a ceiling-type patient vital sign monitoring system according to the present invention, based on signal data, a patient's heart rate and a drawing showing an example of calculating the respiratory rate, FIG. 8 is a drawing showing an example of calculating the oxygen saturation of a patient based on signal data by a second bio-signal calculation unit (2320) of a ceiling-type patient bio-signal monitoring system according to the present invention, FIG. 9 is a drawing schematically showing an example of the sensor unit (1000) rotating by driving a sensor unit driving module (4000) of a ceiling-type patient bio-signal monitoring system according to the present invention, and FIG. 10 is a drawing showing steps of a patient bio-signal monitoring method according to the present invention.

[0050] First, referring to FIGS. 1 to 9, a ceiling-type patient bio-signal monitoring system according to the present invention will be described as follows.

[0051] FIG. 1 is a drawing schematically illustrating the configuration of a ceiling-type patient bio-signal monitoring system according to the present invention. The ceiling-type patient bio-signal monitoring system according to the present invention includes a sensor unit (1000), an analysis processing unit (2000), a bio-signal output unit (3000), and a sensor unit driving module (4000).

[0052] The above sensor unit (1000) is attached to the ceiling inside the hospital room where the patient is located, and irradiates light to the patient (P). Specifically, the sensor unit (1000) includes a light irradiation unit (1100) and a receiving unit (1200), which will be described below with reference to FIG. 2.

[0053] The above light irradiation unit (1100) classifies the patient and irradiates light to the patient to obtain the patient's bio-signal. Specifically, the light irradiation unit (1100) includes a first laser diode light source module (1110), a second laser diode light source module (1120), and an LED light source module (1130).

[0054] The above first laser diode light source module (1110) irradiates a first laser diode light of a first wavelength, and at this time, the first wavelength corresponds to a wavelength of 660 nm among wavelengths that take into account the absorption coefficient of hemoglobin.

[0055] At this time, the first laser diode light source module (1110) includes a first light source irradiation unit (1111), a first collimator unit (1112), and a first filter unit (1113), which will be described with reference to FIG. 3 as follows.

[0056] The first light source irradiation unit (1111) irradiates the first laser diode light of the first wavelength to a body part where blood vessels are relatively exposed, such as the patient's face, back of the hand, neck, etc., making it easy to measure a biosignal.

[0057] The first collimator unit (1112) is arranged in the front region of the first light source irradiation unit (1111) to align the first laser diode light in parallel so that the light can be irradiated evenly to the patient.

[0058] The first filter unit (1113) is arranged in the front region of the first collimator unit (1112) to control the intensity of the first laser diode light.

[0059] That is, since the light from the first laser diode is typically composed of a strong power that is strong enough to be irradiated onto the human body, there is a need to use a separate filter to lower the power of the light.

[0060] Accordingly, by including the first filter unit (1113), the intensity of the first laser diode light can be adjusted so that safe light can be irradiated to the patient. The first filter unit (1113) can be configured as a neutral density (ND) filter, and can be replaced with another filter that can only adjust the intensity of light without changing the spectral composition.

[0061] Again, referring to FIG. 2, the second laser diode light source module (1120) irradiates a second laser diode light of a second wavelength, wherein the second wavelength corresponds to a wavelength of 940 nm among wavelengths considering the absorption coefficient of hemoglobin.

[0062] At this time, the second laser diode light source module (1120) includes a second light source irradiation unit (not shown), a second collimator unit (not shown), and a second filter unit (not shown), and the second light source irradiation unit, the second collimator unit, and the second filter unit correspond to the configuration and role of the first light source irradiation unit (1111), the first collimator unit (1112), and the first filter unit (1113) described above, so a detailed description thereof will be omitted.

[0063] The above LED light source module (1130) irradiates LED light of a third wavelength, and at this time, the third wavelength is a wavelength specialized for CCTV cameras, has high sensitivity, can illuminate a wide range, and can be a near-infrared ray, for example, a wavelength of 850 nm, which enables shooting even at night.

[0064] However, the ceiling-type patient vital sign monitoring system according to the present invention is a device that operates 24 hours a day and can record images in real time using natural light and lighting during the day. Therefore, the LED light source module (1130) can be selectively operated only in situations where natural light and lighting are blocked or at night.

[0065] Accordingly, the ceiling-type patient vital sign monitoring system according to the present invention can monitor the patient's movements in the ward while performing CCTV functions as well as recognizing the patient's face 24 hours a day as the LED light source module (1130) is operated at night.

[0066] In addition, the first laser diode light source module (1110) and the second laser diode light source module (1120) are devices that irradiate light to the patient in order to obtain the patient's bio-signal, which will be described later, and are selectively driven only when the patient's bio-signal is obtained.

[0067] That is, it can perform 24-hour CCTV functions while simultaneously acquiring patient vital signs when necessary, and a detailed explanation of this will be provided later.

[0068] The above-described receiving unit (1200) receives reflected light reflected from the patient, and specifically, the receiving unit (1200) includes a lens (1210), a near-infrared image sensor (1220), a visual image sensor (1230), and a dichroic mirror (1240).

[0069] The above lens (1210) performs light alignment by allowing reflected light reflected from the patient to pass through it.

[0070] The above near-infrared image sensor (1220) collects the second reflected light, which is the reflected light of the second laser diode light, and the third reflected light, which is the reflected light of the LED light.

[0071] The above visual image sensor (1230) collects the first reflected light, which is the reflected light of the first laser diode light.

[0072] The above dichroic mirror (1240) reflects the second reflected light and the third reflected light and guides them toward the near-infrared image sensor, and passes the first reflected light through and guides it to the visual image sensor.

[0073] That is, one receiver (1200) is used, and the dichroic mirror (1240) is configured to guide the reflected light to each sensor by passing and reflecting the reflected light according to the utilization of the reflected light.

[0074] The above analysis processing unit (2000) analyzes the patient's image and bio-signals based on the reflected light reflected by the patient from the light irradiated by the sensor unit (1000), and at this time, the bio-signals include the patient's heart rate, respiration, and oxygen saturation.

[0075] Specifically, the above analysis processing unit (2000) includes a recognition unit (2100), a signal processing unit (2200), and a data analysis unit (2300), which will be described with reference to FIG. 5 as follows.

[0076] The above recognition unit (2100) recognizes the patient based on the information of the third reflected light, and specifically, the recognition unit (2100) includes a third reflected light receiving unit (2110), an outline detection unit (2120), a patient recognition unit (2130), and a patient information storage unit (2140).

[0077] The third reflected light receiving unit (2110) receives information on the third reflected light from the near-infrared image sensor (1220).

[0078] At this time, the third reflected light received by the third reflected light receiving unit (2110) may be reflected light of the third wavelength light, but in a situation where there is natural light and lighting, such as during the day, it may be visible light reflected light reflecting natural light. In this case, the visible light reflected light is collected by the visual image sensor (1230), and at this time, the third reflected light receiving unit (2110) receives information on the reflected light from the visual image sensor (1230).

[0079] The above contour detection unit (2120) detects the facial contour information and features of the patient based on the information of the third reflected light or the visible light reflected light, and stores the patient information based on the facial contour information in the patient information storage unit (2140).

[0080] The patient recognition unit (2130) recognizes the patient based on the facial contour information, and at this time, the patient information stored in the patient information storage unit (2140) can be utilized.

[0081] That is, the recognition unit (2100) can distinguish the patient and determine the patient's movement, i.e., the patient's movement, fall, movement frequency, etc., to check the patient's real-time status 24 hours a day.

[0082] The signal processing unit (2200) generates signal data for deriving the biosignal based on information of the first reflected light and the second reflected light, and specifically, the signal processing unit (2200) includes first and second reflected light receiving units (2210) and a signal data generating unit (2220).

[0083] The first and second reflected light receiving units (2210) above receive information on the first reflected light and the second reflected light. That is, as illustrated in FIG. 6, images of the first reflected light and the second reflected light collected by the near-infrared image sensor (1220) and the visual image sensor (1230) are simultaneously acquired, and the white square box in the image of the first reflected light illustrated in FIG. 6 (a) and the white square box in the image of the second reflected light illustrated in FIG. 6 (b) are selected as regions of interest (ROI), and pixel information within the regions of interest are analyzed to measure biosignals.

[0084] The signal data generation unit (2220) above restores the information of the first reflected light and the second reflected light into a photoplethysmogram (PPG) signal to generate signal data for calculating the biosignal.

[0085] The above data analysis unit (2300) analyzes the signal data and calculates the biosignal, and specifically, the data analysis unit (2300) includes a first biosignal calculation unit (2310) and a second biosignal calculation unit (2320).

[0086] The first biosignal calculation unit (2310) calculates the patient's heart rate and respiratory rate based on the signal data.

[0087] That is, as shown in the diagram of Fig. 7, if the waveform obtained based on the signal data is analyzed in the frequency domain through FFT (fast Fourier transform), etc., the frequency information included in the signal can be known, and since the frequency corresponding to the highest peak represents the heart rate and breathing rate, the heart rate and breathing rate can be calculated using the frequency calculation formula.

[0088] The second biosignal calculation unit (2320) calculates the patient's oxygen saturation based on the signal data.

[0089] That is, as shown in the diagram of Fig. 8, for measuring oxygen saturation, images of the wavelengths of the first reflected light and the second reflected light are simultaneously acquired and expressed as a sinusoidal wave in the time domain.

[0090] Afterwards, oxygen saturation is an indicator of how much oxygen is contained in the blood, and it measures the amount of hemoglobin that carries oxygen in the blood, so it is calculated using the mathematical formula 1 below.

[0091] [Mathematical Formula 1]

[0092]

[0093] That is, oxygen saturation (SpO2) is calculated by comparing the absorption of hemoglobin according to wavelength using the reflected light of the first wavelength light, 660 nm, which has a high absorption rate of deoxyhemoglobin (Hb), and the second wavelength light, 940 nm, which has a high absorption rate of oxyhemoglobin (HbO2).

[0094] The bio-signal output unit (3000) outputs the bio-signals of the patient analyzed by the analysis processing unit (2000), i.e., the patient's heart rate, respiratory rate, and oxygen saturation. The bio-signal output unit (3000) not only provides information to medical staff adjacent to the patient, but also transmits the information to a separate nursing system managing the patient, so that remote medical staff can also check the patient's bio-signals.

[0095] The above sensor unit drive module (4000) rotates the angle of the sensor unit (1000).

[0096] That is, as shown in the diagram of FIG. 9, when there are multiple patients (P1, P2) in one ward, the sensor unit drive module (4000) can rotate the sensor unit (1000) or move it along a separate rail to change the patient to which the sensor unit (1000) irradiates light, thereby enabling real-time tracking to detect patient identification and facial contours using one sensor unit (1000) and detecting bio-signals of multiple patients.

[0097] Next, a patient bio-signal monitoring method according to the present invention will be described with reference to FIG. 10, and the patient bio-signal monitoring method according to the present invention uses the ceiling-type patient bio-signal monitoring system according to the present invention described above.

[0098] A patient bio-signal monitoring method according to the present invention includes a sensing step, an analysis processing step, and a bio-signal output step.

[0099] The above sensing step includes a light irradiation step and a light receiving step, in which the sensor unit (1000) irradiates light to the patient.

[0100] The above light irradiation step includes a first light source module irradiation step, a second light source module irradiation step, and a third light source module irradiation step, in which the light irradiation unit (1100) irradiates light to the patient.

[0101] The first light source module irradiation step irradiates the first laser diode light source module (1110) with a first laser diode light of a first wavelength, and includes a first light source irradiation step, a first light alignment step, and a first filtering step.

[0102] In the first light source irradiation step, the first light source irradiation unit (1111) irradiates the first laser diode light to the patient.

[0103] In the first optical alignment step, the first collimator unit (1112) is placed in the front region of the first light source irradiation unit (1111) to align the first laser diode light in parallel.

[0104] In the first filtering step, the first filter unit (1113) is placed in the front region of the first collimator unit (1112) to control the intensity of the first laser diode light.

[0105] In the second light source module irradiation step, the second laser diode light source module (1120) irradiates second laser diode light of a second wavelength.

[0106] In the third light source module irradiation step, the LED light source module (1130) irradiates LED light of the third wavelength.

[0107] The above receiving step includes a receiving unit (1200) receiving the reflected light reflected from the patient, a reflected light moving step, a reflected light guiding step, a first reflected light collection step, and a second reflected light collection step.

[0108] In the above reflection light movement step, the reflection light passes through the lens (1210).

[0109] In the above-described reflection light guiding step, the dichroic mirror (1240) reflects the second reflection light and the third reflection light and guides them toward the near-infrared image sensor (1220), and passes the first reflection light through and guides it to the visual image sensor (1230).

[0110] In the first reflected light collection step, the near-infrared image sensor (1220) collects the second reflected light and the third reflected light.

[0111] In the second reflected light collection step, the visual image sensor (1230) collects the first reflected light.

[0112] In the above analysis processing step, the analysis processing unit (2000) analyzes the patient's image and bio-signals based on the reflected light reflected by the patient from the light irradiated by the sensor unit (1000). The bio-signals analyzed in the analysis processing step include the patient's heart rate, respiration, and oxygen saturation.

[0113] In the above biosignal output step, the biosignal output unit (3000) outputs the biosignal of the patient analyzed in the analysis processing unit (2000).

[0114] The patient bio-signal monitoring method according to the present invention may further include a sensor unit (1000) driving step, in which the sensor unit (1000) driving module (4000) rotates and drives the angle of the sensor unit (1000), and the sensor unit (1000) driving step may be performed to check the bio-signal for a second patient (P2 of FIG. 9) when the bio-signal output step has been performed for a first patient (P1 of FIG. 9).

[0115] Although the preferred embodiments of the present invention have been illustrated and described with reference to the drawings as described above, the present invention is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Furthermore, such modifications should not be understood individually from the technical idea or prospect of the present invention.

[0116] The present invention relates to a ceiling-type patient vital sign monitoring system and a patient vital sign monitoring method using the same, and can be used in industries such as the healthcare industry.

Claims

1. In the ceiling-type patient vital sign monitoring system, A sensor unit that irradiates light to the patient; An analysis processing unit that analyzes the patient's image and biosignals based on the reflected light reflected by the patient from the light irradiated from the sensor unit; and A biosignal output unit that outputs the biosignal of the patient analyzed in the above analysis processing unit; including, A ceiling-type patient vital sign monitoring system, characterized in that the vital signs include the patient's heart rate, respiration, and oxygen saturation.

2. In paragraph 1, The above sensor part, A light irradiation unit for irradiating light to the patient; and A ceiling-type patient vital sign monitoring system, characterized by including a receiving unit that receives reflected light reflected from the patient.

3. In paragraph 2, The above light irradiation unit, A first laser diode light source module that irradiates a first laser diode light of a first wavelength; A second laser diode light source module irradiating a second laser diode light of a second wavelength; and A ceiling-type patient vital sign monitoring system, characterized by including an LED light source module that irradiates LED light of a third wavelength.

4. In paragraph 3, The above first laser diode light source module, A first light source irradiation unit onto which the first laser diode light is irradiated; A first collimator unit arranged in the front region of the first light source irradiation unit to align the first laser diode light in parallel; and A ceiling-type patient vital sign monitoring system, characterized by including a first filter section arranged in a front region of the first collimator section and controlling the intensity of the first laser diode light.

5. In paragraph 4, The above receiver, A lens through which the above reflected light passes; A visual image sensor that collects first reflected light, which is reflected light of the first laser diode light; A near-infrared image sensor that collects second reflected light, which is reflected light of the second laser diode light, and third reflected light, which is reflected light of the LED light; and A ceiling-mounted patient vital sign monitoring system, characterized by including a dichroic mirror that reflects the second reflected light and the third reflected light and guides them toward the near-infrared image sensor, and passes the first reflected light through and guides it to the visual image sensor.

6. In paragraph 1, A ceiling-type patient vital sign monitoring system, characterized in that it further includes a sensor unit driving module that rotates the angle of the sensor unit.

7. A method for monitoring patient vital signs using a ceiling-type patient vital sign monitoring system, A sensing step in which the sensor part irradiates light to the patient; An analysis processing step in which the analysis processing unit analyzes the patient's image and bio-signals based on the reflected light reflected by the patient from the light irradiated from the sensor unit; and A biosignal output step in which a biosignal output unit outputs the biosignal of the patient analyzed in the above analysis processing unit; including, A method for monitoring patient vital signs, characterized in that the vital signs analyzed in the above analysis processing step include the patient's heart rate, respiration, and oxygen saturation.

8. In paragraph 7, The above sensing step is, A light irradiation step in which a light irradiation unit irradiates light to the patient; and A method for monitoring patient vital signs, characterized by including a receiving step in which a receiving unit receives reflected light reflected from the patient.

9. In paragraph 8, The above light irradiation step is, A first light source module irradiation step in which the first laser diode light source module irradiates the first laser diode light of the first wavelength; A second light source module irradiation step in which a second laser diode light source module irradiates a second laser diode light of a second wavelength; and A method for monitoring a patient's vital signs, characterized by including a third light source module irradiation step in which an LED light source module irradiates LED light of a third wavelength.

10. In paragraph 9, The above first light source module investigation step is, A first light source irradiation step in which a first light source irradiation unit irradiates the first laser diode light to the patient; A first light alignment step in which a first collimator section is arranged in a front region of the first light source irradiation section to align the first laser diode light in parallel; and A method for monitoring a patient's vital signs, characterized in that it comprises a first filtering step in which a first filter part is arranged in a front region of the first collimator part to adjust the intensity of the first laser diode light.

11. In paragraph 10, The above receiving step is, A reflection light movement step in which the above reflected light passes through the lens; A reflection light guiding step in which a dichroic mirror reflects a second reflection light, which is a reflection light of the second laser diode light, and a third reflection light, which is a reflection light of the LED light, and guides them toward a near-infrared image sensor, and passes a first reflection light, which is a reflection light of the first laser diode light, through the reflection light and guides it to a visual image sensor; A first reflected light collection step in which the near-infrared image sensor collects the second reflected light and the third reflected light; and A method for monitoring a patient's vital signs, characterized in that the visual image sensor comprises a second reflected light collecting step for collecting the first reflected light.

12. In paragraph 7, A method for monitoring a patient's vital signs, characterized in that the method further includes a sensor unit driving step in which a sensor unit driving module rotates the angle of the sensor unit.

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