A vital signs monitoring assembly, device, and system

Abstract

The embodiment of the present application relates to the technical field of medical monitoring, and discloses a vital sign monitoring assembly, device and system, wherein the vital sign monitoring assembly comprises a sensing mat, an optical fiber, a light transmitting module and a light receiving module.The sensing mat comprises at least two elastic protrusions; the optical fiber is arranged around the at least two elastic protrusions, and the optical fiber is arranged around the elastic protrusions along the outer sidewall of the elastic protrusions for at least one round; the light transmitting module is connected with one end of the optical fiber, and the light transmitting module is used for transmitting light signals to the optical fiber; the light receiving module is connected with the other end of the optical fiber, and the light receiving module is used for receiving returned light signals, converting the returned light signals into electric signals and amplifying the electric signals.Through the above arrangement, the monitoring sensitivity and the anti-damage capability of the vital sign monitoring assembly can be improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of medical monitoring, in particular to a vital sign monitoring assembly, device and system. BACKGROUND

[0002] Home health monitoring is not only an extension and supplement of professional medical monitoring in hospitals, but also can provide long-term diagnosis basis for some diseases and early warning for some sudden diseases. At the same time, people's health consciousness is becoming more and more intense, and the demand for self-monitoring at home is also increasing day by day. For some cardiovascular diseases such as arrhythmia, bradycardia or tachycardia, monitoring of heart rate can provide reference basis; real-time monitoring of respiration is also necessary for respiratory diseases such as sleep apnea syndrome and sudden conditions such as apnea and obstruction. Monitoring of heart rate and respiration is particularly important for the elderly with weakened self-care ability.

[0003] The existing optical fiber monitoring methods mainly include optical fiber grating, optical fiber coherence and optical fiber intensity solutions. The optical fiber grating and optical fiber coherence solutions are expensive and complex to demodulate, and are not easy to implement in actual applications. The optical fiber intensity modulation solution is commonly used in the market.

[0004] The principle of the optical fiber intensity modulation solution is that the weak physiological movement acts on the optical fiber material, causing the optical fiber to bend and deform, not satisfying the total reflection law, so that the transmitted light intensity changes, and the light detector monitors the change of the light intensity. The optical fiber is easily affected by external disturbances, has low sensitivity, and is easily damaged by the external environment. SUMMARY

[0005] The technical problem to be solved by the embodiment of the present application is to provide a vital sign monitoring assembly, device and system with high monitoring sensitivity and good damage resistance.

[0006] To solve the above technical problems, the embodiment of the present application provides a technical solution:

[0007] In one aspect, the embodiment of the present application provides a vital sign monitoring assembly, which comprises:

[0008] The sensing mat comprises at least two elastic protrusions;

[0009] The optical fiber is wound around the at least two elastic protrusions, and the optical fiber is wound around the elastic protrusions at least one turn along the outer side wall of the elastic protrusions;

[0010] The light sending module is connected to one end of the optical fiber, and the light sending module is used for sending light signals to the optical fiber;

[0011] A light receiving module connected to the other end of the optical fiber, the light receiving module being configured to receive the returned optical signal and convert it into an electrical signal and amplify it.

[0012] In some embodiments, the sensing mat further comprises a mat plate, and the at least two elastic protrusions are mounted on the mat plate.

[0013] In some embodiments, the mat plate is made of a flexible or elastic material.

[0014] In some embodiments, the elastic protrusions are in a cylindrical shape.

[0015] In some embodiments, the optical fiber is a multi-mode optical fiber.

[0016] In some embodiments, the optical fiber is wound around the elastic protrusion along the outer sidewall of the elastic protrusion for at least two turns.

[0017] In some embodiments, the system further comprises:

[0018] A first communication module connected to the light receiving module, the first communication module being configured to receive the electrical signal and send it to an external device.

[0019] In another aspect, embodiments of the present application also provide a vital sign monitoring device, the vital sign monitoring device comprising:

[0020] a carrier for carrying a human body or a part of a human body; and

[0021] The vital sign monitoring assembly as described above, wherein the vital sign monitoring assembly is mounted on the carrier.

[0022] In some embodiments, the carrier is a seat cushion, a pillow or a mattress.

[0023] In another aspect, embodiments of the present application also provide a vital sign monitoring system, the vital sign monitoring system comprising:

[0024] a second communication module, a cloud server and a smart terminal; and

[0025] The vital sign monitoring device as described above, wherein the first communication module, the second communication module, the cloud server and the smart terminal are connected in sequence, the second communication module is configured to receive, process the electrical signal to generate data results and send them to the cloud server, the cloud server is configured to store and analyze the data results, generate an analysis report and push it to the smart terminal, and the smart terminal is configured to receive the analysis report pushed by the cloud server.

[0026] Compared with the prior art, the embodiment of the present application sets the at least two elastic protrusions and the optical fiber around the at least two elastic protrusions, wherein the optical fiber is wound around the elastic protrusions along the outer side wall of the elastic protrusions at least one turn. On the one hand, the change of the optical signal of the optical fiber caused by the deformation of the elastic protrusions improves the sensitivity of the vital sign monitoring assembly. On the other hand, the elastic protrusions act as a medium, and external objects do not directly act on the optical fiber, so that the optical fiber can be prevented from being damaged by external objects, such as being pierced by sharp objects, thereby improving the anti-damage capability of the vital sign monitoring assembly. In addition, the vital sign monitoring module has low cost and is easy to implement, has strong universality, has great expansibility, is convenient to implant in various carriers, and has a broad market. BRIEF DESCRIPTION OF DRAWINGS

[0027] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document. These examples, and not limitations, of the embodiments are described in detail with reference to the accompanying drawings, in which elements having the same reference numerals in different figures are the same elements unless otherwise specified. The figures of the drawings are not to scale and the same or similar reference numerals in the figures denote the same or similar elements.

[0028] Figure 1 FIG. 1 is a schematic diagram of a vital sign monitoring system provided by one embodiment of the present application;

[0029] Figure 2 FIG. 2 is a structure schematic diagram of an optical fiber of FIG. 1 wound around an elastic protrusion; Figure 1

[0030] Figure 3 FIG. 3 is a schematic diagram of a vital sign monitoring device provided by one embodiment of the present application;

[0031] Figure 4 FIG. 4 is a signal time-domain waveform collected by the vital sign monitoring device provided by the present application;

[0032] Figure 5 FIG. 5 is a signal frequency-domain waveform collected by the vital sign monitoring device provided by the present application. DETAILED DESCRIPTION

[0033] ​For the purpose of promoting the understanding of the present application, the present application will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It needs to be noted that when an element is described as "fixed to" or "mounted on" another element, it can be directly on the other element or one or more intermediate elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intermediate elements can be present therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal" and the like used in the present specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0034] Unless otherwise defined, all technical and scientific terms used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the related listed items.

[0035] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0036] The vital sign monitoring assembly 1 provided by the embodiments of the present application is used for monitoring the vital signs of a human body, wherein the information of the vital signs can include at least one of heart rate, pulse, blood pressure and respiration.

[0037] Please refer to Figure 1 and Figure 2 The vital sign monitoring assembly 1 comprises a sensing pad 11, an optical fiber 12, an optical transmitting module 13 and an optical receiving module 14. The sensing pad 11 comprises at least two elastic protrusions 111. The optical fiber 12 is wound around the at least two elastic protrusions 111, and the optical fiber 12 is wound around the elastic protrusions 111 at least one turn along the outer sidewall of the elastic protrusions 111. The optical transmitting module 13 is connected to one end of the optical fiber 12, and the optical transmitting module 13 is used for transmitting optical signals to the optical fiber 12. The optical receiving module 14 is connected to the other end of the optical fiber 12, and the optical receiving module 14 is used for receiving the returned optical signals and converting them into electrical signals and amplifying.

[0038] When the elastic protrusion 111 is elastically deformed, the optical fiber 12 around the elastic protrusion 111 is affected by the elastic protrusion 111, the radius of curvature and the refractive index of the optical fiber 12 change, thereby the light signal reflected to the light receiving module 14 changes, and the light signal is converted into a fluctuating electric signal by the light receiving module 14.

[0039] The vital sign monitoring assembly 1 provided by the embodiment of the present application has the advantages that: the elastic protrusion 111 is arranged, and the optical fiber 12 is arranged around the elastic protrusion 111, so that the optical fiber 12 can change the light signal by the elastic deformation of the elastic protrusion 111, the sensitivity of the vital sign monitoring assembly 1 is improved, the elastic protrusion 111 is used as a medium, and external objects do not directly act on the optical fiber 12, so that the optical fiber 12 is prevented from being damaged by external objects, for example, the optical fiber 12 is prevented from being broken due to the puncture of a sharp object, the damage resistance of the vital sign monitoring assembly 1 is improved, and in addition, the vital sign monitoring assembly 1 has low cost and is easy to implement.

[0040] The number of the elastic protrusions 111 is at least two, so that the stress range of the sensing mat 11 is increased, and fatigue damage of a single elastic protrusion 111 during cyclic use is avoided, and the optical fiber 12 is arranged around the elastic protrusion 111 at least once, so that the optical fiber 12 and the at least two elastic protrusions 111 are tightly connected, and the optical fiber 12 is prevented from being separated from the elastic protrusions 111.

[0041] The vital sign monitoring assembly 1 provided by the embodiment of the present application can realize real-time monitoring of respiration and heart rate by using the optical fiber intensity modulation monitoring method, and has strong anti-electromagnetic interference capability.

[0042]

[0043]

[0044]

[0045]

[0046] In the formula, R is the radius of curvature, λ is the working wavelength of the light source, λ cf is the cutoff frequency, and Δ is the relative refractive index difference between the fiber core and the cladding, Δ=(n1-n2) / n2.

[0047] As can be seen from the formula (1), (2), (3), the macro-bending loss mainly depends on the radius of curvature, the refractive index and ​

[0048] In the case of selected light source operating wavelength and optical fiber, the total macro-bending loss L s = a c L, wherein L is the length of the optical fiber 12 wound on the elastic protrusion 111. According to formula (1), it can be known that the total macro-bending loss mainly depends on the curvature radius and the length of the optical fiber 12 wound on the elastic protrusion 111. The greater the curvature radius of the optical fiber 12, the smaller the total macro-bending loss; the smaller the curvature radius of the optical fiber 12, the greater the total macro-bending loss. When the elastic protrusion 111 is elastically expanded under pressure, the curvature radius of the optical fiber 12 wound on the elastic protrusion 111 increases; when the elastic protrusion 111 restores the elastic deformation, the curvature radius of the optical fiber 12 wound on the elastic protrusion 111 decreases. The change of the curvature radius of the optical fiber 12 affects the total macro-bending loss, which finally reflects the fluctuation change of the returned optical signal.

[0049] In order to ensure the influence of the sensitivity of the elastic protrusion 111 on the curvature radius of the optical fiber 12 wound thereon, the elastic protrusion 111 is in a cylindrical shape, the elastic protrusion 111 has an elastic restoring force, and the elastic protrusion 111 is compressed along its own axial direction and expanded along its own radial direction when it is subjected to force along its own axial direction. Through the above setting, when the elastic protrusion 111 is deformed under pressure, the optical fiber 12 wound on the elastic protrusion 111 is uniformly subjected to the outward expansion of the elastic protrusion 111, thereby better affecting the light intensity of the optical fiber 12 and ensuring the sensitivity of the optical fiber 12 wound on the elastic protrusion 111.

[0050] In some other embodiments of the present application, the shape of the elastic protrusion 111 can be set according to actual needs, for example, a polygonal column.

[0051] The elastic protrusion 111 is made of rubber material, so that the elastic protrusion 111 has good elastic performance and the hysteresis phenomenon is not obvious, so that the vital sign monitoring assembly 1 can have a flat amplitude-frequency response curve in a low frequency band, which helps to absorb a weak heartbeat vibration signal in a superimposed strong breathing signal.

[0052] The elastic protrusion 111 and the optical fiber 12 can be bonded to each other by an adhesive material to strengthen the connection between the elastic protrusion 111 and the optical fiber 12, thereby ensuring the sensitivity of the optical fiber 12 wound on the elastic protrusion 111. The adhesive material can be epoxy resin, and the epoxy resin and the rubber material can achieve good bonding effect.

[0053] To improve the sensitivity of the optical fiber 12 wound around the elastic protrusion 111, the optical fiber 12 is wound around the elastic protrusion 111 at least two turns along the outer wall of the elastic protrusion 111. By increasing the length of the optical fiber 12 wound around the elastic protrusion 111, the total macrobending loss of the optical fiber 12 is increased, resulting in a larger fluctuation in the returned optical signal, thereby giving the vital signs monitoring component 1 higher sensitivity.

[0054] In some embodiments of the present invention, the optical fiber 12 is wound around the elastic protrusion 111 and distributed from one end of the elastic protrusion 111 to the other end. That is, the number of turns of the optical fiber 12 around the elastic protrusion 111 is approximately spread along the axial direction of the elastic protrusion 111, covering the entire elastic protrusion. This arrangement further increases the length of the optical fiber 12 wound around the elastic protrusion 111, thereby increasing the total macro-bending loss of the optical fiber 12. This results in a larger fluctuation in the returned optical signal, thus giving the vital signs monitoring component 1 higher sensitivity.

[0055] It is understood that the vital signs monitoring component 1 in this embodiment of the invention can adjust the monitoring sensitivity of the vital signs monitoring component 1 by setting the initial radius of the elastic protrusion 111 and the length of the optical fiber 12 wrapped around the elastic protrusion 111. The initial radius refers to the radius of the elastic protrusion 111 when no external force is applied.

[0056] The sensing pad 11 also includes a pad plate 112, and the at least two elastic protrusions 111 are mounted on the pad plate 112. For example... Figure 1 As shown, the at least two elastic protrusions 111 are arranged in a rectangular array on one side of the pad 112. The number of elastic protrusions 111 can be selected according to actual needs, with at least two being sufficient, so that the vital signs monitoring component 1 can monitor a large area. Furthermore, the arrangement of the at least two elastic protrusions 111 can also be set according to actual needs, such as a circular array or a triangular array. By setting the pad 112 for mounting the at least two elastic protrusions 111, on the one hand, the optical fiber 12 can be wound around the at least two elastic protrusions 111 and located on the same side of the pad 112, avoiding tangling of the optical cable. On the other hand, the relative position of each elastic protrusion 111 is fixed, making the sensing pad 11 easy to install on an external carrier, thereby facilitating the vital signs monitoring component 1 to monitor the human body.

[0057] In one of the embodiments of the present application, the cushion plate 112 is made of a flexible or elastic material, and the cushion plate 112 has a certain toughness to improve the use performance of the sensing mat 11. Through the above arrangement, the cushion plate 112 can be wound, thereby facilitating the storage of the sensing mat 11, and further facilitating the transportation of the vital sign monitoring assembly 1. The cushion plate 112 can be made of rubber material.

[0058] For the above-mentioned optical fiber 12, the optical fiber 12 is a multi-mode optical fiber 12, the cable of the multi-mode optical fiber 12 is relatively thick, and multiple light wave modes can exist in the cable to propagate, and when the curvature radius changes, it is more sensitive, which is beneficial to improve the monitoring of the vital sign monitoring assembly 100 on the vital signs.

[0059] In one of the embodiments of the present application, the vital sign monitoring assembly 1 further comprises a first communication module 15 connected to the light receiving module 14, the first communication module 15 is used to receive the electrical signal and send the electrical signal to an external device, so as to realize the connection between the vital sign monitoring assembly 1 and the external device, thereby making the monitoring information obtained by the vital sign monitoring assembly 1 sent outward. In the specific implementation process, the first communication module 15, the light receiving module 14 and the light transmitting module 13 can be integrated in the same module.

[0060] By using the vital sign monitoring assembly 100 provided by the embodiment of the present application, a signal with a higher signal-to-noise ratio can be obtained, and through frequency domain analysis on the time domain signal, the frequency band peak range of breathing and heartbeat can be obviously obtained, and the vital sign information of breathing and heartbeat can be more accurately and real-timely extracted.

[0061] Please refer to Figure 3 The embodiment of the present application also provides a vital sign monitoring device 2, which comprises a carrier 21 and the vital sign monitoring assembly 1 as described above. The vital sign monitoring assembly 1 is installed on the carrier 21, and the carrier 21 is used to carry a human body or a human body part. The carrier 21 serves as a medium directly contacted with the human body or the human body part, and the breathing fluctuation and the myocardial beat produce different frequency excitations on the pressure of the carrier 21, so that the elastic protrusions 111 expand outward or contract back, thereby affecting the light intensity change of the part of the optical fiber 12 arranged around the elastic protrusions 111.

[0062] Specifically, the carrier 21 is a seat cushion, a pillow or a mattress, and the vital sign monitoring assembly 1 is arranged in the inside of the carrier 21. The number of the at least two elastic protrusions 111 can be set according to the specific structure of the carrier 21. For example, when the carrier 21 is a mattress, the number of the elastic protrusions 111 can be appropriately increased to obtain a larger monitoring area.

[0063] As Figure 4 shown, Figure 4 A time-domain waveform is shown, which is obtained by collecting the adult breathing evenly on the pillow of the vital sign monitoring device 2 provided by the embodiment of the application with a sampling frequency of 50Hz and using 32-bit unsigned shaped quantization data. Figure 5 Figure 5 As Figure 5 shown,

[0064] Please refer to Figure 1 , the embodiment of the application also provides a vital sign monitoring system 3, which comprises a second communication module 31, a cloud server 32 and an intelligent terminal 33, and a vital sign monitoring device 2 as described above. The first communication module 15, the second communication module 31, the cloud server 32 and the intelligent terminal 33 are connected in sequence, the second communication module 31 is used for receiving, processing and sending the data results of the electric signal to the cloud server 32, the cloud server 32 is used for storing and analyzing the data results, generating an analysis report and pushing it to the intelligent terminal 33, and the intelligent terminal 33 is used for receiving the analysis report pushed by the cloud server 32.

[0065] Among them, by separating the first communication module 15 and the second communication module 31, the coupling of the system can be reduced, the structure of the vital sign monitoring assembly 1 can be simplified, and the safety and stability can be improved.

[0066] Among them, the first communication module 15 and the second communication module 31 can be connected in communication through wireless communication technology such as but not limited to Bluetooth, Wi-Fi and the like. The second communication module 31 and the cloud server 32 can be connected in communication through wireless communication technology such as but not limited to Wi-Fi and the like.

[0067] Among them, the intelligent terminal 33 can be but is not limited to a smart phone, a wearable device, a tablet computer, a portable computer, other portable computing devices or a remote server. The intelligent terminal 33 can check the analysis report pushed by the server to view the results, so as to realize visual monitoring. When the vital sign data information in the analysis report exists an abnormal condition, the intelligent terminal 33 can alarm, for example, alarm through vibration, alarm bell and the like.

[0068] ​The monitored vital sign data information can be stored in the cloud server 32 to provide basis for diagnosis of later medical treatment.

[0069] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, as described in the specification and drawings of the present application, are also included in the patent protection scope of the present application.

Claims

1. A vital signs monitoring assembly for mounting to a carrier of a vital signs monitoring device, the vital signs monitoring assembly comprising: The carrier is used for carrying a human body or a human body part, and the vital sign monitoring assembly comprises: a sensing mat comprising a mat plate and at least two elastic protrusions mounted on the mat plate, the mat plate being made of a flexible or elastic material, the elastic protrusions being compressed in their own axial direction and expanded in their own radial direction when being forced in their own axial direction; an optical fiber wound around the at least two elastic protrusions, the optical fiber being wound around the elastic protrusions for multiple turns along the outer side walls of the elastic protrusions, the optical fiber being a multi-mode optical fiber; an optical transmitting module connected to one end of the optical fiber, the optical transmitting module being used for transmitting optical signals to the optical fiber; an optical receiving module connected to the other end of the optical fiber, the optical receiving module being used for receiving returned optical signals, converting the returned optical signals into electrical signals and amplifying the electrical signals.

2. The vital signs monitoring assembly of claim 1, wherein, The elastic protrusions are in a cylindrical shape.

3. The vital signs monitoring assembly of claim 1, wherein, The optical fiber is a multi-mode optical fiber.

4. The vital signs monitoring assembly of claim 1, wherein, The optical fiber is wound around the elastic protrusions for at least two turns along the outer side walls of the elastic protrusions.

5. The vital signs monitoring assembly of any one of claims 1-4, wherein, Further comprising: a first communication module connected to the optical receiving module, the first communication module being used for receiving the electrical signals and transmitting the electrical signals to an external device.

6. A vital signs monitoring device, characterized by, Comprise: a carrier used for carrying a human body or a human body part; and the vital sign monitoring assembly of claim 5, wherein the vital sign monitoring assembly is mounted on the carrier.

7. The vital signs monitoring apparatus of claim 6, wherein, The carrier is a seat cushion, a pillow or a mattress.

8. A vital signs monitoring system, characterized by Comprise: a second communication module, a cloud server and a smart terminal; and the vital sign monitoring device of any one of claims 6 or 7, wherein the first communication module, the second communication module, the cloud server and the smart terminal are connected in sequence, the second communication module being used for receiving, processing the electrical signals to generate data results and transmitting the data results to the cloud server, the cloud server being used for storing and analyzing the data results, generating an analysis report and pushing the analysis report to the smart terminal, and the smart terminal being used for receiving the analysis report pushed by the cloud server.

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