Abstract: A method includes: receiving, at a processor that is remote from a bone conduction device adhered to a user's skin, a first output signal from the bone conduction device, the first output signal having been generated by a first sensor in the bone conduction device, the first sensor being configured to detect non-audible inputs; identifying, at the processor, a first measurement signal characteristic based on the first output signal; determining, at the processor, that the first measurement signal characteristic is indicative of a state of the user; selecting a control signal configured to cause a transducer in the bone conduction device to generate an output to alter the state of the user or the user's perception of the state; and transmitting the control signal from the processor to the bone conduction device.

Abstract: A band limiter comprises an optical filter, which has first and second filter sections, and a filter moving mechanism for moving the optical filter. The first filter section reduces intensity of blue light, which is emitted from a B-LED, in a wavelength range of greater than or equal to a peak wavelength of the blue light to generate first blue light. The second filter section reduces intensity of the blue light in a wavelength range of less than or equal to the peak wavelength of the blue light to generate second blue light. A light source controller places the first filter section in a light path of the blue light in a normal mode to generate the first blue light, and places the second filter section in the light path of the blue light in an oxygen saturation mode to generate the second blue light.

Abstract: Exemplary embodiments for reconfiguring a storage system comprise a modular sensor platform, comprising: a base module comprising, a display, a processor, a memory and a communication interface; a band removably coupled to the base module such that the band is replaceable with different types of bands; and a sensor module that collects data from a user, the sensor module in communication with the base module and removably coupled to the band such that the sensor module is replaceable with different types of sensor modules, the sensor module further comprising a plurality of sensor units that are removably coupled to the sensor module such that individual sensor units are replaceable with different types of sensor units.

Abstract: Method and apparatus for providing calibration of analyte sensor including applying a control signal, detecting a measured response to the control signal, determining a variance in the detected measured response, and estimating a sensor sensitivity based on the variance in the detected measured response is provided.

Abstract: Infusion systems, infusion devices, and related operating methods are provided. An exemplary method of operating an infusion device capable of delivering fluid to a user involves obtaining one or more uncalibrated measurements indicative of the physiological condition, obtaining one or more reference measurements of the physiological condition, determining a raw calibration factor based on a relationship between the one or more uncalibrated measurements and the one or more reference measurements corresponding to the respective uncalibrated measurements of the one or more uncalibrated measurements, and determining an adjusted calibration factor based at least in part on an expected calibration factor and the raw calibration factor, wherein operation of the infusion device to deliver the fluid is influenced by the adjusted calibration factor.

Abstract: The invention relates to a referencing apparatus for application onto a patient at least partially covered by surgical drapes. The referencing apparatus includes a plurality of locking elements shaped for engagement with the surgical drapes. The surgical drapes are disposed intermediate the plurality of locking elements and a respective plurality of predefined anatomical sites on the patient. The engagement causes a docking system disposed on the referencing apparatus to assume a reference orientation relative to the plurality of predefined anatomical sites.

Abstract: Computer based systems and methods for estimating a user state are disclosed. In some embodiments, the methods comprise inputting a first input at an intermittent interval and a second input at a frequent interval into a user state estimation model to estimate the user state. In some embodiments, the first inputs are enhanced by injecting a noise input to create a plurality of enhanced first inputs whereby the plurality of enhance first inputs correspond to the plurality of second inputs at the frequent interval. In some embodiments, the first input comprises a self-reported input and the second inputs comprise a physiological input, a performance input or a situational input. In some embodiments, a machine learning algorithm creates the state estimation model. In some embodiments, the state estimation model estimates a future user state. In some embodiments, a computer based system for estimating a user state is provided.

Abstract: A small biological information acquisition device that can noninvasively acquire biological information is provided. The biological information acquisition device includes a first light emitting element 30A serving as a first infrared light source that is used for acquiring positional information of blood vessels and emits infrared light having a peak wavelength ?1, and a second light emitting element 30B serving as a second infrared light source that is used for spectral analysis and emits infrared light having a peak wavelength ?2 different from the peak wavelength ?1.

Abstract: A device including: an image sensor for imaging an object field reflected from an object to be imaged; a first objective lens for focusing a background field from the object into a concentrated energy field on a spatial frequency plane of the first objective lens; and a programmable spatial light modulator positioned in an optical path at the spatial frequency plane, the programmable spatial light modulator being programmed to display an opaque region and a substantially transparent region outside of the opaque region, the opaque region corresponding to a position of the concentrated energy field.

Abstract: An imaging apparatus includes a light source that includes a diffusion plate and, in operation, emits, toward a subject, pulsed light that diverges; a photodetector that includes a photoelectric converter that, in operation, receives light from the subject and converts the light to an electric charge and an electric charge accumulator that, in operation, accumulates the electric charge, and, in operation, generates an electric signal based on the accumulated electric charge; and a control circuit that, in operation, controls the light source and the photodetector. The control circuit, in operation, causes the electric charge accumulator to start accumulating the electric charge when a period of time has passed after the control circuit has caused the light source to start emitting the pulsed light, and causes the electric charge accumulator to accumulate the electric charge corresponding to a component, among the light from the subject, that is scattered inside the subject.

Abstract: A system is provided for processing blood from a blood source. The system cooperates with a disposable fluid flow circuit including a tubing line that is associated with a clamp of the system. The system also includes a sensor and a controller, which cooperate to determine whether the fluid flow circuit and/or the system itself is defective and/or if the fluid flow circuit has been installed onto the system improperly. If such an error or defect exists, then the controller determines whether a selected system state exists. The controller causes a change in the appearance of the display of the system, which includes displaying an interactive icon if the selected system state exists. The icon, when manipulated, causes the clamp to move from the closed condition to an open condition.

Abstract: Embodiments of the present disclosure include a handheld multi-parameter patient monitor capable of determining multiple physiological parameters from the output of a light sensitive detector capable of detecting light attenuated by body tissue. For example, in an embodiment, the monitor is capable of advantageously and accurately displaying one or more of pulse rate, plethysmograph data, perfusion quality, signal confidence, and values of blood constituents in body tissue, including for example, arterial carbon monoxide saturation (“HbCO”), methemoglobin saturation (“HbMet”), total hemoglobin (“Hbt”), arterial oxygen saturation (“SpO2”), fractional arterial oxygen saturation (“SpaO2”), or the like. In an embodiment, the monitor displays a line associated with a patient wellness level.

Abstract: A hand wearable electronic device uses a space on a back-side of a human hand, between the wrist joint and the finger joints, the space referred to as opisthenar, has mounted or worn thereon a wear mechanism for an electronic device. The device has functions of (i) receive/transmit RF electronics, (ii) a touch/display screen, (iii) a battery, and (iv) external switches; and a logic in the device that provides for the device use as an extension device for use with a smart phone.

Abstract: A system is provided that furnishes expert procedural guidance based upon patient-specific data gained from surgical instruments incorporating sensors on the instrument's working surface, one or more reference sensors placed about the patient, sensors implanted before, during or after the procedure, the patient's personal medical history, and patient status monitoring equipment. Embodiments include a system having a surgical instrument with a sensor for generating a signal indicative of a property of a subject tissue of the patient, which signal is converted into a current dataset and stored. A processor compares the current dataset with other previously stored datasets, and uses the comparison to assess a physical condition of the subject tissue and/or to guide a procedure being performed on the tissue.

Abstract: A biosensor unit is coupled to a user device and may communicate with the user device over a short range wireless or wired interface. The biosensor unit includes an optical sensor used to obtain an oxygen saturation level, a heart rate and a respiration rate of a user. The biosensor unit may also obtain a blood pressure and a temperature of the user using one or more other sensors. The biosensor unit transmits the obtained biosensor data to the user device using the short range interface.

Abstract: Described herein are systems and methods for mounting optical sensors in physiological monitoring devices worn by a user to sense, measure, and/or display physiological information. Optical sensors may be mounted in the rear face of the device, emit light proximate a targeted area of a user's body, and detect light reflected from the targeted area. The optical sensor may be mounted in a housing or caseback such that at least a portion of the optical sensor protrudes a distance from at least a portion of the housing. The protrusion distance may be adjustable such that a user may achieve a customized fit of the wearable device. Adjustment of the protrusion distance may also result in a customized level of contact and/or pressure between the optical sensor and the targeted area which may, in turn, result in more reliable and accurate sensing of physiological information.

Abstract: A coupling portion of a wearable medical monitor may include an attachment member configured to reversibly couple the coupling portion to a body portion of the wearable medical monitor. The wearable medical monitor may be coupled to a sensor via a cable. The coupling portion may also include a cable retention feature including a channel configured to receive the cable. The cable retention feature may be configured to apply a retaining force to the cable when the cable is disposed in the channel.

Abstract: A wire overmold device including a carrier body having a distal end and a proximal end, a wire cap configured to engage the distal end of the carrier body, at least one of a jacketed cable and one or more wires at least partially enclosed between the wire cap and the carrier body, and an overmold formed over the proximal end of the carrier body and at least portions of the wire cap and the distal end of the carrier body, wherein the wire cap and the distal end of the carrier body protrude from the overmold.

Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.

Abstract: The present disclosure provides a device for touch-sensing. The device includes a touch surface configured to receive a touch by an object; a measuring portion configured to measure a blood oxygen level of the object; and a control portion configured to calculate a level of pressing force corresponding to the blood oxygen level.

Abstract: A measuring device for measuring physiological data of a mammal comprising a measuring unit, to be worn by the mammal, with a first and second module. The first module comprises a light source and the second module comprises a sensor unit for measuring an intensity of a fraction of the light delivering a measuring signal. There is a synchronization means for pulsewise activating the light source synchronously with the second module, wherein the measuring signal is indicative of the value of the intensity measured during the pulsewise activation. The synchronization means comprises an energy transmitting unit and a detector which is part of the other one of the first and the second module, in an operating condition the energy transmitting unit pulsewise generates an electromagnetic field, and the detector receives this field and generates therefrom a supply voltage for use in that other module.

Abstract: An integrated system for assessing wound exudates from the wound of a patient is described. The system may contain functionality to detect, process and report various wound parameters. The system also may make treatment determinations based on these findings. The system may detect one or more physiological values of the wound exudates from the wound of the patient. The system may means for comparing the one or more detected physiological values to predetermined physiological values in order to obtain a comparison result in real time. The system may include a processor 15 which provides an electronic signal based on a comparison result in which the electronic signal may correspond to guidelines for treating the wound 13. The system may be integrated with other wound treatment devices, such as negative pressure wound therapy devices (NPWT) 9.

Abstract: A pulse oximetry sensor includes reusable and disposable elements. To assemble the sensor, members of the reusable element are mated with assembly mechanisms of the disposable element. The assembled sensor provides independent movement between the reusable and disposable elements.

Abstract: A system and method, for measuring phase delay and amplitude of a near infrared signal emanating from tissue of an animal subject in response a near infrared signal input to such tissue, operate by processing a signal from an optical detector and a corresponding signal from an optical detector emulation circuit. In some aspects, the processed signals are fed into zero crossing detectors that in turn feed a time-to-digital converter providing at an output thereof a digital measure of the phase delay of the received optical signal.

Abstract: A method and an apparatus for detecting a change of the fluid status or determining the fluid status of an individual are disclosed. The method comprises the following steps: determining a change of the body parameter (?RBV) of the individual during a first treatment session (201); determining a first fluid status of the individual (202); calibrating the determined change of the body parameter (?RBV) based on the first fluid status (205); determining the change of the body parameter (?RBV) of the individual during at least one further treatment session (207); and deriving a fluid status or a change of fluid status individual from the change of the body parameter (?RBV) (208).

Abstract: When a time at which a first pulsed light starts arriving at pixels after being reflected by an object is a first time, a time at which the first pulsed light finishes arriving at the pixels is a second time, and a time at which a second pulsed light starts arriving at the pixels after being reflected by the object is a third time, a control circuit decreases sensitivity of the pixels in first part of a first period from the first time including the second time, to a level lower than the sensitivity of the pixels in at least part of a second period after the first period and up to the third time, and increases the sensitivity of the pixels in second part of the first period, to a level higher than the sensitivity of the pixels in the at least part of the second period.

Abstract: A sensor cover according to embodiments of the disclosure is capable of being used with a non-invasive physiological sensor, such as a pulse oximetry sensor. Certain embodiments of the sensor cover reduce or eliminate false readings from the sensor when the sensor is not in use, for example, by blocking a light detecting component of a pulse oximeter sensor when the pulse oximeter sensor is active but not in use. Further, embodiments of the sensor cover can prevent damage to the sensor. Additionally, embodiments of the sensor cover prevent contamination of the sensor.

Abstract: Described herein are systems and methods for improving the reliability and accuracy of wearable physiological monitoring devices. A wearable monitoring device may comprise an inner surface configured for at least partial contact with a targeted tissue region of a person. The inner surface may comprise one or more outwardly projecting raised regions. The monitoring device may further comprise a physiological sensor, one or more components of which may be located at or near a raised region of the inner surface. In this manner, sufficient contact between the targeted tissue region and the inner surface, as well as proper placement of the one or more components of the sensor relative to the targeted tissue region, may be achieved. The accuracy and reliability of the monitoring device may also be less susceptible to the effects of ambient light and/or the movements of the user.

Abstract: A powered medical communication hub including a housing and a rear interface assembly. The rear interface assembly includes a first data link configured to transmit first medical data to a processing system and a power link configured to receive a first amount of power. The hub also includes a power distribution module disposed within the housing, electrically coupled to the power link, and configured to convert the first amount of power into a plurality of power levels, and a forward interface assembly including a first connector communicatively coupled to the first data link and electrically coupled to the power distribution module, the first connector being configured to provide a first medical sensing device coupled thereto with a second amount of power equal to one of the plurality of power levels and receive the first medical data from the first medical sensing device.

Abstract: A method that includes receiving first and second detection signals and electrocardiograph signals; wherein the first detection signals result from an illumination, by an oxygen saturation sensor included in a device that may be removably attached to a user, of a sternal angle of a user by infrared pulses; wherein the second detection signals result from an illumination, by the oxygen saturation sensor, of the sternal angle of a user by visible light pulses; wherein the electrocardiograph signals may be detected by an electrocardiography sensor that may be included in the device; generating a first waveform template that may be responsive to the first detection signals; generating a second waveform template that may be responsive to the second detection signals; calculating an indication of the oxygen saturation characteristic of the user in response to the first and second detection signals; detecting cardiac cycle durations that may be based upon the first and second detection signals; detecting electrocard

Abstract: Methods for monitoring equivalent inner diameter of arterioles by measuring blood pressure wave transient time from small arteries to arterioles and calculating, from the transient time and concurrently measured heart rate values, an equivalent inner diameter of arterioles.

Abstract: A patient monitor is disclosed for detecting patient movement or abnormal breathing. Images of a patient are obtained by a stereoscopic camera. These images are then processed by a 3D position determination module which determines measurements indicative of positions of at least part of a patient. The obtained measurements are then passed to a model generation module which generates a breathing model of the variation in position of the at least part of a patient during a breathing cycle. Subsequently abnormal breathing or patient movement can be detected by processing further images obtained by the stereoscopic camera to determine more measurements indicative of positions of at least part of a patient. These measurements are then compared with a stored breathing model by a comparison module.

Abstract: An automatic analyzing apparatus capable of obtaining an analysis result of a specimen high in urgency in a shorter time is provided. When a first rack 50 is present in a sampling line 103 and an analysis request for a second rack higher in the degree of urgency for analysis than the first rack 50 is detected, a control unit unloads the first rack 50 onto a transport line 100 through a return line 102, allows the first rack 50 to stand by at a rack standby position 120 on a transport line 101 between a loading line 101 and the return line 102 under control, and loads the second rack from the transport line 101 onto the sampling line 103 through the loading line 101 and transports the second rack to the dispensing position 111 under control while allowing the first rack 50 to stand by.

Abstract: A photoacoustic apparatus disclosed in the present specification includes: a light source configured to emit light; an acoustic wave transmission unit configured to transmit an acoustic wave to a specific area; a photoacoustic wave reception unit configured to receive a photoacoustic wave generated by a subject due to emission of the light, which is emitted from the light source, to the subject and configured to output a time-series photoacoustic signal; an echo reception unit configured to receive an echo generated due to reflection, in the subject, of the acoustic wave transmitted from the acoustic wave transmission unit and configured to output a time-series echo signal; and a processing unit configured to acquire, based on the time-series photoacoustic signal and the time-series echo signal, optical property information in which information a component corresponding to a reflected wave of the photoacoustic wave generated in the specific area is reduced.

Abstract: Systems are described for monitoring extremities for injury following an impact. A system embodiment includes, but is not limited to, a device including a deformable substrate integrated with a textile; a sensor assembly coupled to the deformable substrate, the sensor assembly configured to generate one or more sense signals based on detection of a physical impact to a body portion and based on detection of a physiological parameter; circuitry operably coupled to the sensor assembly and configured to receive the one or more sense signals based on detection of the physical impact and to determine whether the physical impact exceeds a threshold impact value, the circuitry configured to instruct the sensor assembly to detect one or more physiological parameters of the body portion when the physical impact exceeds the threshold impact value; and a reporting device operably coupled to the circuitry; and an external device communicatively coupled with the device.

Abstract: An optical sensor includes: a light emitter; a light receiver; a rod-shaped grasping member in which one of the light emitter and the light receiver is disposed, and which is to be grasped by a hand of a subject; and a clamping member which is adapted to clamp a part of the hand of the subject with the grasping member, another one of the light emitter and the light receiver being disposed in the clamping member.

Abstract: A blood flow image diagnosing device of the present invention includes a laser light irradiation system for applying laser light to an observation region of a biotissue having blood cells; a light receiving section having a plurality of pixels and adapted to detect reflection light from the observation region of the biotissue; an image capturing section for successively capturing a plurality of images on the basis of a signal from the light receiving section; an image storage section for storing the plurality of images; a computation section for computing the speed of blood flow within the biotissue from time course changes of output signals of the pixels throughout the stored images; and a display section for displaying a two-dimensional distribution which is the result of the computation as a blood flow map. The computation section includes a pigment concentration correction section.

Abstract: According to various embodiments, a medical system and method for early detection of shock may include devices configured to provide information about multiple patient parameters. In certain embodiments, the system may receive input from a regional saturation sensor. Based on these inputs, the system may provide a diagnosis of shock and/or distinguish between various types of shock.

Abstract: A photoacoustic measurement device 10 includes a probe 11 having a light emitting unit that emits measurement light L and a plurality of acoustic wave detection elements, a determination unit 28 that determines whether a state between the probe 11 and a subject M is a contact state or a non-contact state, and a light intensity control unit (for example, a switching control unit 36 and an intensity switching unit 37) that controls the intensity of the measurement light such that the measurement light has a first intensity or a second intensity higher than the first intensity, on the basis of the determination result of the determination unit 28. The determination unit 28 performs the determination on the basis of the status of a change in a plurality of photoacoustic signals detected by the plurality of acoustic wave detection elements.

Abstract: System and method of using electromagnetic radiation signals to non-invasively test a glucose level in a subject. During operation, an incident beam of Terahertz waves is generated and projected onto the surface of the eyeball, which is naturally reflected by a tear layer. The reflected Terahertz waves are detected and characterized to determine the reflection characteristics of the tear layer, e.g., an axial ratio of reflection coefficients in two polarization orientations. Provided with the determined axial ratio and according to a predetermined correlation among axial ratio, tear glucose level and blood glucose level, the current blood glucose level in the subject can be derived and presented to a user.

Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.

Abstract: System and method of using electromagnetic radiation signals to non-invasively test a glucose level in a subject. During operation, an incident beam of Terahertz waves is generated and projected onto the surface of the eyeball, which is naturally reflected by a tear layer. The reflected Terahertz waves are detected and characterized to determine the reflection characteristics of the tear layer, e.g., an axial ratio of reflection coefficients in two polarization orientations. Provided with the determined axial ratio and according to a predetermined correlation among axial ratio, tear glucose level and blood glucose level, the current blood glucose level in the subject can be derived and presented to a user.

Abstract: Embodiments described herein generally relate to devices, methods and systems for determining blood oxygenation. By applying near infrared radiation of an appropriate wavelength to the tissue and determining the absorbance at a plurality of points where the distance between the source of the near infrared radiation and the detector are known, the oxygenation state of the hemoglobin can be determined based on position in a three dimensional space.

Abstract: A system for performing non-invasive networked medical procedures including a number of in vivo medical devices, a communication path between at least two of the devices, an ex vivo control unit to control the behavior of the devices, and a wireless communication path between the control unit and at least one of the devices. An associated method for performing non-invasive networked medical procedures is also provided. Further included is a simulation method that utilizes accurate electromagnetic field simulations, using a software based test bench, to determine the maximum allowable transmitted power levels from in vivo devices to achieve a required bit error rates (BER) at an in vivo or ex vivo node (receiver) while maintaining the specific absorption rate (SAR) under a required threshold.

Abstract: Systems and methods are provided for using earphones with biometric sensors to identify and present information regarding performance periods. Fatigue level associated with fatigue experienced in response to a stimulus and recovery from such fatigue may be determined based on heart rate variability (HRV) data and learned user characteristics. One or more cycles of fatigue and recovery can be identified as a fitness cycle(s), each fitness cycle encompassing a period of time beginning with the stimulus associated with the fitness-related activity and progressing through recovery from the fatigue experienced in response to the stimulus associated with the fitness-related activity. A performance period may be predicted based on a pre-determined fatigue/recovery level instance within a fitness cycle.

Abstract: A method for intraoperatively measuring joint contact mechanics of a patient's joint is provided. The method includes inserting a sensor between first and second bones of a joint. Then a predetermined force is applied to one of the first and second bones. Afterwards, contact mechanics such as, contact stresses, contact areas and/or forces are measured between the first and second bones in response to the applied predetermined force.

Abstract: Components resolved in time by a separator accumulate in a sample cell and are analyzed by electromagnetic radiation-based spectroscopic techniques. The sample cell can be configured for multiple path absorption and can be heated. The separator can be a gas chromatograph or another suitable device, for example a distillation-based separator. The method and system described herein can include other mechanical elements, controls, procedures for handling background and sample data, protocols for species identification and/or quantification, automation, computer interfaces, algorithms, software or other features.

Abstract: With a spectroscopic analysis method of the present invention, by performing principal component analysis on optical spectra measured at individual positions of a specimen, principal components of a plurality of orders that constitute the individual optical spectra are calculated; for the individual orders, principal-component images in which values thereof are principal-component scores of the individual principal components corresponding to the positions are created; distribution patterns of the principal-component scores are identified in the individual principal-component images; the morphology of the specimen is identified in a morphological image in which the specimen is captured; the principal-component images that have principal-component-score distribution patterns correlated with the morphology of the specimen are identified; and the individual optical spectra are reconstructed by using the principal components of orders corresponding to the orders of the identified principal-component images.

Abstract: An optical device is used to monitor an implant embedded in the tissue of a mammal (e.g., under the skin). The implant receives excitation light from the optical device and emits light that is detected by the optical device, including an analyte-dependent optical signal. Scatter and absorption properties of tissue change over time due to changes in hydration, blood perfusion and oxygenation. The optical device has an arrangement of light sources, filters and detectors to transmit excitation light within excitation wavelength ranges and to measure emitted light within detection wavelengths. Changes in scattering and absorption of light in the tissue, such as diffuse reflectance, are monitored. The light sources, filters and detectors may also be used to monitor autofluorescence in the tissue to correct autofluorescence background.

Abstract: A photoacoustic apparatus disclosed in the present specification includes: an acoustic wave transmission unit configured to transmit a transmission acoustic wave to a specific area; a control unit configured to control a transmission waveform of the transmission acoustic wave transmitted from the acoustic wave transmission unit; a light source configured to generate light emitted to an area including the specific area when the acoustic wave reaches the specific area; an acoustic wave reception unit configured to receive the acoustic wave and to output a time-series received signal; and a signal processing unit configured to acquire optical property information based on the time-series received signal, wherein the control unit controls the transmission waveform in such a manner that amplitude of a photoacoustic wave generated in the specific area is reduced by the transmission acoustic wave transmitted from the acoustic wave transmission unit.