TWI605790B - Physiological signal sensing device - Google Patents

Description

Physiological signal sensing device

The invention relates to a physiological signal sensing device, in particular to a sensing device for detecting a physiological signal by using sound waves.

Physiological signal measurement equipment used to be mostly used in medical institutions, requiring professional instruments and qualified medical personnel to operate. However, with the development of modern sensing and signal processing technology, the cost of medical electronic products has been greatly reduced, while home health care awareness It has also been significantly improved. The remote home care system is no longer imagined. Various techniques for measuring physiological signals have gradually developed into basic health tools that can be used in home environments, which is beneficial for long-term monitoring of users' health.

At present, the physiological status of infants, children with disabilities, patients or the elderly who are inconvenient or disabled is the main area of home care. According to the state of need for monitoring, it can be divided into static and active monitoring. Since the physiological signal measurement equipment in the home environment is operated by the general user and is not operated by professional medical personnel, the operation design of such equipment is simple, rapid, automated, non-invasive and low maintenance cost. . In addition, the use of physiological signal measurement equipment in the home environment should also consider non-interference or low-interference measurement methods to avoid changes in the daily activities and behaviors of users due to the use of products. It is easier for the average user to accept.

The existing respiratory heartbeat detection device can be divided into pressure sensing, optical wavelength sensing and adhesive electrode detection. Among them, the pressure sensing device can be used in a sleeping environment to combine detection of sleeping position, turning over, leaving the bed, etc., but its accuracy is poor, and is usually designed as a dedicated large device. For example, a bed or a mattress has a greater psychological pressure on the user. Optical wavelength sensing utilizes a non-contact detection method. Although it has the advantage of being small in size, it is easily affected by the external environment and the light source, has poor accuracy, and is expensive. The adhesive electrode detects the user's electrocardiogram, heart rate and other items with the best accuracy and can collect various physiological information. However, the wire is easily damaged, which leads to poor contact and affects the measurement effect, and is limited by the length of the wire, which limits the user. The action often makes the user feel inconvenient, and the way of sticking to the contact is also easy to fall off during the detection. Due to the complicated operation and the sense of being monitored, the user is often not actively used, but the effect is not achieved.

Therefore, there is a need for a physiological information detecting device that is simple in operation, convenient to maintain, and can be integrated into the user's home life, so as to achieve the purpose of using, detecting, and preventing accidents at any time.

The sounding member comprises a plurality of independent closed-cell structures which are not connected to each other and can generate an acoustic resonance effect. When directly or indirectly contacting the user's body, the sound waves of the heart sound, the respiratory vibration or the organ sound are transmitted to the sounding member. Pass in. The sound collecting member includes a first end portion and a second end portion, wherein one end portion contacts the surface of the sound absorbing member, and communicates with the second end portion through the through hole. The sound source receiving device comprises a receiving end and a sensing component, and the receiving end is connected to the second end of the sound collecting component to receive the sound wave propagated by the sounding component, so as to achieve the purpose of detecting the physiological signal. According to an embodiment of the present invention, the physiological signal sensing device is further connected to a signal processing device, and converts the sound wave received by the sensing component into an electronic signal.

According to an embodiment of the present invention, the sound collecting member of the physiological signal sensing device includes one or more first sound collecting portions and a second sound collecting portion, and the first end portions of the plurality of first sound collecting portions independently contact the sound transmitting The surface of the piece, the second sound collecting portion, includes a plurality of interfaces for respectively connecting the second ends of the first sound collecting portions.

According to another embodiment of the present invention, the sounding member is in contact with the first end The face is coated with at least one coating, and in accordance with an embodiment of the invention, the coating comprises a fabric, flocked or polymeric laminate.

According to an embodiment of the present invention, the closed cell structure of the sound transmitting member is defined by a polymer foaming material or a natural porous material. According to an embodiment of the embodiment, the polymer foaming material or the natural porous material has 10-100. % closed cell ratio. According to an embodiment of the present embodiment, the density of the polymer foamed material is 15 to 200 kg/cm ³ , and in another embodiment, the density of the polymer foamed material is 25 to 50 kg/cm ³ .

According to one or more embodiments of the present embodiment, the polymer foaming material comprises ethylene vinyl acetate (EVA), radiation cross-linked polyethylene (IXPE), crosslinked polyethylene. (cross-linked polyethylene; XPE), Chloroprene Rubber (CR), styrene butadiene rubber (SBR), polyvinyl chloride (PVC), ethylene-propylene ternary rubber ( Ethylene propylene terpolymer rubber; EPDM), Polyethylene foam (EPE), Acrylonitrile Butadiene rubber (NBR) or Polyurethane (PU) or any combination thereof.

In accordance with an embodiment of the present invention, the closed cell structure is defined by a composite material that is a continuous polymeric foam containing a plurality of discrete porous particles or fragments.

According to another embodiment of the present invention, the closed cell structure is defined by a fibrous material comprising cellulose, cotton fiber, asbestos fiber, glass fiber, plastic fiber, conductive fiber or any combination thereof, from straight, wrinkled The twisted, crimped, felted or kneaded fiber material or sheets of the material are formed in a staggered, interwoven or stacked configuration, defined by the arrangement of voids or internal voids.

Therefore, the physiological signal sensing device of the embodiment of the present invention utilizes a sound-transmitting member having a closed-cell structure to generate an acoustic resonance effect on sound waves of heart sounds, breath sounds, or organ sounds to amplify (amplify) a small frequency, and then through the sound source sensor to receive, with the processing and identification of the signal, to achieve accurate detection, recording, analysis of physiological phenomena.

100‧‧‧physiological signal sensing device

110‧‧‧Sounds

115‧‧‧Cladding

120‧‧‧Set parts

121‧‧‧The first part of the sound

122‧‧‧First end

123‧‧‧second end

124‧‧‧Connecting Department

125‧‧‧Connection section

126‧‧‧Second episode

127a‧‧‧ connector

127b‧‧‧ connector

128a‧‧‧Connecting port

128b‧‧‧ connector

130‧‧‧Source receiving device

132‧‧‧ Receiver

134‧‧‧上盖

136‧‧‧floor

140‧‧‧ concave edge

1 is a perspective view of a physiological signal sensing device according to an embodiment of the present invention; FIG. 2 is an exploded view of the physiological signal sensing device of the present embodiment; and FIG. 3 is a cross section of the physiological signal sensing device of the present embodiment. Figure 4 is a schematic diagram showing the use of a contact physiological signal sensing device according to an embodiment of the present invention.

Please refer to FIG. 1 , which is a perspective view of a physiological signal sensing device according to an embodiment of the present invention. The physiological signal sensing device 100 includes a sound transmitting member 110, a sound collecting member 120, and a sound source receiving device 130, and a concave edge 140. The physiological signal sensing device 100 of the present embodiment includes, but is not limited to, a form of a pad.

The sound transmitting member 110 is a means for generating acoustic resonance and propagating acoustic waves. In the embodiment of the present invention, the polymer foam having a closed cell structure is foamed. The material or the natural porous material is formed, and when it is directly or indirectly contacted with the user's body, sound waves such as heart sounds, respiratory vibrations, or organ sounds are transmitted to the sound transmitting member 110.

The "acoustic resonance" as used in the present specification refers to a phenomenon in which the frequency of sound vibration is amplified when an acoustic body is driven by an external force of its resonance frequency.

The "closed cell structure" as used in the present specification refers to a plurality of cavities which are naturally formed or artificially produced in a solid object, and the cavities are not connected to each other; An open cell structure refers to a plurality of cavities that are naturally formed or artificially fabricated in a solid object, and each cavity communicates with each other and communicates with the outside. Unless otherwise specified, the "material having a closed cell structure" as used in this specification does not exclude materials in which both the closed cell structure and the open cell structure exist. ""percentage of close area"" (closed to the area) refers to the ratio (%) of the volume of closed cells in the material to the apparent volume of the material.

The sound collecting member 120 has two ends of the contact sound transmitting member 110 and the connected sound source receiving device 130, and can transmit sound waves in the sound transmitting member 110 to the sound source receiving device 130. According to an embodiment of the present invention, the sound collecting member 120 may have a narrower diameter with respect to the sound transmitting member 110 to reduce diffusion when the sound wave propagates, and can be efficiently transmitted to the sound source receiving device 130.

The sound source receiving device 130 has a sensing component connected to the sound collecting component 120 to receive the sound wave propagated by the sound transmitting component 110 for the purpose of detecting the physiological signal. According to an embodiment of the present invention, the sound source receiving device 130 is further connected to a signal processing device, and converts the sound wave received by the sensing component into an electronic signal.

The concave edge 140 can be formed on the sound transmitting member 110 via sewing, hot pressing, pasting, etc., and has the sound transmitting member 110 fixedly attached to the body of the physiological signal sensing device product or the surface of the sound transmitting member is covered. The fabric, the thin plastic layer and the like are closely attached thereto, or the decorative effect, the flatness is increased, and the comfort is enhanced.

Please refer to FIG. 2 and FIG. 3 together. FIG. 2 is an exploded view of the physiological signal sensing device of the present embodiment. FIG. 3 is a cross-sectional view of the physiological signal sensing device of the present embodiment.

In the embodiment, the first sound collecting portion 121 is disposed on the sound transmitting member 110. wherein, as shown in FIG. 3, the two first sound collecting portions 121 include the first end portions 122 for independently contacting the sound transmission. The second end portion 123 is fixed to a bottom plate 136. The bottom plate 136 is fixed to the sound transmitting member 110, and the second end portion 123 has a connecting portion 124 connected to the connecting port 127a of the connecting portion 125.

A through hole is opened in the middle of the first sound collecting portion 121. First sound part 121 and sound The area of the contact portion of the piece 110 is slightly larger than the area of the cross-section of the tube wall of the first sound collecting portion 121. Further, the surface of the sound transmitting member 110 is covered with a coating 115, and the first sound collecting portion 121 is directly in contact with the sound transmitting member 110 through the coating layer 115. According to an embodiment of the present invention, the coating layer 115 may comprise a fabric, flocking or polymer thin layer, such as a thermoplastic polyurethane (TPU), for protecting the polymer foam material of the sound transmitting member 110. Or natural porous materials to increase their durability.

The second sound collecting portion 126 includes a connection port 128a and a connection port 128b which are respectively connected to the connection port 127a and the connection port 127b of the connection portion 125. The sound source receiving device has a receiving end 132 connected to the second sound collecting portion 126, and the sensing element of the sound source receiving device 130 is connected to the receiving end 132 to receive the sound wave propagated by the sound transmitting member 110. In this embodiment, the sound source receiving device 130 is fixed on the bottom plate 136, and the upper cover 134 and the bottom plate 136 are covered to receive a part of the sound source receiving device 130 and the sound collecting member 120.

According to an embodiment of the present invention, the sound transmitting member 110 may be a natural porous material of a polymer material having a closed cell ratio of 10 to 100%, and may be, for example, a foamed material having a closed cell ratio of 30 to 90%. According to one embodiment of the present invention or more, the density of the polymer foam material of 15-200kg / ^c m ^3, in this embodiment, the density of the polymer foam material of 25-50kg / ^c m ^3.

Among them, the polymer foaming material contains a polymerization product of isocyanate or isothiocyanate. The polymer foaming material may include Ethylene vinyl acetate (EVA), irradiation cross-linked polyethylene (IXPE), cross-linked polyethylene (XPE), and chloroprene. Rubber (Chloroprene Rubber; CR), styrene butadiene rubber (SBR), polyvinyl chloride (PVC), ethylene-propylene ternary rubber (EPDM), polyethylene compound (Polyethylene foam; EPE), Acrylonitrile Butadiene rubber (NBR) or Polyurethane (PU), any combination thereof. Natural porous materials can be sponge, cork, coir silk, bamboo charcoal, charcoal, diatomaceous earth, A mixture of corals, any combination of the above, or any combination thereof.

According to an embodiment of the invention, the closed cell structure is defined by a composite material which is a continuous polymer foam containing a plurality of discrete porous particles or fragments, such as regenerated foam, which is made up of foamed feet. It can also be applied by crushing, stirring glue and steam autoclaving and compression molding.

According to another embodiment of the present invention, the closed cell structure is defined by a fibrous material, including plant fibers, cotton fibers, asbestos fibers, glass fibers, plastic fibers, conductive fibers, or any combination thereof, from straight, wrinkled The twisted, crimped, felted or kneaded fiber material or sheets of the material are formed in a staggered, interwoven or stacked configuration, defined by the arrangement of voids or internal voids.

Please refer to FIG. 4, which is a schematic diagram of a use situation of a physiological signal sensing device according to an embodiment of the present invention. The physiological signal sensing device 400 has a sound transmitting member 410 and a sound source receiving device 420. In this embodiment, the physiological signal sensing device 400 can be placed on the bed or placed on the back of the chair. When the user lies on the bed or leans against the back of the chair, the heart sound can be detected by touching the area around the chest cavity. Or breathing sound, so the user can rest, sleep, drive, and instantly detect changes in physiological conditions.

In addition, the physiological signal sensing device of the embodiment of the present invention may also be in the form of a strap or placed on a personal object, for example, the physiological signal sensing device is designed as a head ring, a wristband, a brooch, an ankle, a corset, a bundle. Use directly on the chest or belt, or detachably combined with a headband, bracelet, brooch, ankle, corset, corset, belt or seat belt. It can be used in a variety of situations such as daily life, sports, and fetal sounds. Detection, driving, etc.

According to an embodiment of the present invention, the physiological signal sensing device is further connected to a signal processing device, which can convert the sound wave received by the sensing component into an electronic signal, and translate the received digital signal through the processor to identify the differential physiological Signals and noise, and have been wired Wireless data transmission, identification, analysis and storage of collected information, emergency warning, immediate medical measures or record the long-term physiological state of the user, for long-term evaluation.

For example, when the signal detected by the physiological signal sensing device is determined to be abnormal, an emergency alert can be sent to the user (such as a driver driving), his guardian (family outside, designated contact, medical hospital) The office, the emergency center, the security center, the community property management center, etc., can also instantly transmit the information of the user's location through the connection with the remote server, so that the guardian can make immediate medical measures. The above-mentioned "abnormal conditions" include, but are not limited to, at least one of the physiological signs of the immediate detection is higher or lower than the preset normal value error range (indicating that there may be an impending acute health or accident risk), all The physiological signs of immediate detection disappear simultaneously (indicating that the user may be out of bed, dropped or the detection device is removed), etc.

In summary, the physiological signal sensing device of the embodiment of the present invention utilizes a sound-transmitting member having a closed-cell structure, and can generate an acoustic resonance effect on a fine-motion sound wave vibration such as a heart sound, a breath sound, or an organ sound, thereby effectively making the vibration air. The amount is increased, and then received and matched by the sound source sensor, and the signal processing and identification can be achieved, and the digital device can be used without using the digital chip, the pressure sensor, the micro motion sensor, etc. at the contact point. Recording and analyzing the effects of physiological phenomena, so the body-worn device can not only be directly washed, but also the electronic parts will not directly contact the human body. In the innovation of the structure, the accuracy of measurement, the processing method is simplified, and the manufacturing cost is reduced. There are great advantages in other aspects.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and retouched without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧physiological signal sensing device

110‧‧‧Sounds

120‧‧‧Set parts

130‧‧‧Source receiving device

140‧‧‧ concave edge

Claims (9)

A physiological signal sensing device comprises: a bottom plate, a sound transmitting member fixed on one side of the bottom plate, the sound transmitting member comprising a plurality of independent closed-cell structures that are not connected to each other, wherein the sound transmitting member is rectangular a cushion body; at least one coating layer covering one surface of the sound transmitting member; and a sound collecting member comprising: a plurality of first sound collecting portions respectively comprising: a first end portion passing through the coating layers Contacting a surface of the sound absorbing member; and a uniform hole formed in the first sound collecting portion and extending from the first end portion to the second end portion of the first sound collecting portions, the first set The second ends of the sound portion are fixed on the other side of the bottom plate relative to the sound transmitting member; and a second sound collecting portion includes a plurality of connecting segments, the connecting segments independently connecting the plurality of segments And a sound source receiving device, and the sound source receiving device is disposed on the other side of the bottom plate relative to the sound transmitting member, comprising: a receiving end connecting the second sound collecting portion of the sound collecting member; and a sensing component Connecting the receiving end to receive the sound wave propagated by the sounding member; and an upper cover covering the To receive the sensing element on the base plate. The physiological signal sensing device of claim 1, wherein the coating comprises a fabric, flocking or a thin layer of polymer. The physiological signal sensing device of claim 1, further comprising a signal processing device connected The sound waves received by the sensing element are converted into electronic signals. The physiological signal sensing device of claim 1, wherein the closed cell structures are defined by a polymer foam material or a natural porous material, and the polymer foam material or the natural porous material has 10-100. % closed cell ratio. The physiological signal sensing device according to claim 5, wherein the polymer foamed material has a density of 15 to 200 kg/cm ³ . The body surface contact type physiological signal sensing device according to claim 5, wherein the polymer foamed material has a density of 25 to 50 kg/cm ³ . The physiological signal sensing device according to claim 5, wherein the polymer foaming material comprises ethylene-vinyl acetate (EVA), light cross-linked polyethylene (IXPE), and Cross-linked polyethylene (XPE), Chloroprene Rubber (CR), styrene butadiene rubber (SBR), polyvinyl chloride (PVC), ethylene-propylene Ethylene propylene terpolymer rubber (EPDM), Polyethylene foam (EPE), Acrylonitrile Butadiene rubber (NBR) or Polyurethane (PU) or any combination thereof. The physiological signal sensing device of claim 1, wherein the closed cells are defined by a composite material, the composite material being a continuous polymer foam containing a plurality of discrete porous particles or fragments. The physiological signal sensing device of claim 1, wherein the closed cell structures are defined by a fiber material, including cellulose, cotton fiber, asbestos fiber, glass fiber, plastic fiber, conductive fiber or any combination thereof. From straight, creped, twisted, crimped, felted or The sheet of material or materials in which the or the fibrous materials are combined in a staggered, interwoven or stacked configuration is defined by the arrangement of voids or internal voids.