Biological information display device, biological information display system, statistical processing method, and recording medium recording a statistical processing program thereon

Abstract

A biological information display device (1, 200) capable of calculating and displaying a statistical value from measurement results of biological information for a plurality of time points, the biological information display device comprising: a display unit (40); an operating unit (41) for receiving an instruction from a user; a storage unit (43) for storing the measurement results of the biological information for the plurality of time points as first measurement results; and a specification control unit (104) for controlling to specify a second measurement result to be used in the calculation of the statistical value from the first measurement results, wherein the specification control unit (104) comprises a specification processing section (116) for specifying the second measurement result based on an instruction received from the operation unit (41) when result information about the first measurement results is displayed, further comprising a first calculation unit (106) for calculating the statistical value with the specified second measurement result, and the display unit (40) displays the calculated statistical value, wherein the specification processing section (116) specifies the measurement result other than the specified measurement result as the second measurement result when the received instruction indicates the specification of data to be eliminated from the first measurement results, and wherein the specification processing section (116) specifies the specified measurement result as the second measurement result when the received instruction indicates the specification of data for calculation from the first measurement results.

Description

Technical field

[0001] The present invention relates to biological information display devices, biological information display systems, statistical processing methods, and recording media recording statistical processing programs thereon, and more particularly relates to a biological information display device, a biological information display system, a statistical processing method, and a recording medium recording a statistical processing program thereon capable of calculating and displaying a statistical value for measurement results of biological information for a plurality of time points. Background technology

[0002] A function for measuring biological information such as blood pressure and recording its measurement result data for display is generally installed in medical devices and home healthcare devices. Treatment strategies, development, and the like can be easily verified, and thus, it is convenient if the recorded measurement result data can be reviewed (analyzed) later. On the other hand, in a case where there is data that appears to indicate an abnormal value due to various disturbances and the like at the time of measurement, it is undesirable to use such data for analysis at all.

[0003] To address such a problem, proposals such as JP 2007-44419 A and JP 2005-224440 A have been made. JP 2007-44419 A describes searching for blood pressure data corresponding to the measurement time within a predetermined period (e.g., 10 minutes) from the measurement time of reference blood pressure data from blood pressure data stored in a memory as specific data, and displaying an average value calculated based on the specific data as an evaluation index. JP 2005-224440 A describes a blood pressure monitor capable of deleting only one measurement result desired by a user from a plurality of measured measurement results stored in a memory.

[0004] JP H10 - 314 128 A discloses another known display device, display system and processing method. Summary of the inventionProblems to be solved by the invention

[0005] According to the invention of JP 2007-44419 A, the distribution of blood pressure values ​​determines whether a blood pressure value should be used in the calculation of the mean. Therefore, even if a blood pressure value was originally measured correctly, such a value may not be reflected in the calculation of the mean.

[0006] The invention of JP 2005 - 224 440 A aims to self-delete data so that an operator with insufficient medical knowledge can delete the data without making a wrong judgment.

[0007] The present invention has been developed to solve the problems described above, and its object is to provide a biological information display device, a biological information display system, a statistical processing method, and a recording medium recording a statistical processing program thereon, which are capable of correctly selecting data necessary for calculating a statistical value from recorded measurement result data without losing the same. Means to solve the problem

[0008] According to one aspect of this invention, there is provided a biological information display device capable of calculating and displaying a statistical value of measurement results of biological information for a plurality of time points, the biological information display device comprising: an operation unit for receiving an instruction from a user; a storage unit for storing the measurement results of biological information for the plurality of time points as first measurement results; and a specification control unit for controlling to specify a second measurement result to be used in the calculation of the statistical value from the first measurement results.The specification control unit includes a specification processing section for specifying the second measurement result based on an instruction received from the operation unit when displaying result information about the first measurement results. The specification processing section specifies the measurement result other than the specified measurement result as the second measurement result when the received instruction specifies the specification of data to be eliminated from the first measurement results, and specifies the specified measurement result as the second measurement result when the received instruction specifies the specification of data to be calculated from the first measurement results. The biological information display device further includes a calculation unit for calculating the statistical value with the specified second measurement result, and the display unit displays the calculated statistical value.

[0009] Preferably, the first measurement results each include first measurement data. The specification control unit displays the first measurement data on the display unit as the result information, and the first calculation unit calculates the statistical value of the second measurement data included in the respective second measurement results.

[0010] Preferably, all of the first measurement data are data of a blood pressure value. Each of the first measurement results further includes a plurality of pulse wave amplitude value data items and a plurality of pressure value data items corresponding to the respective ones of the plurality of pulse wave amplitude value data items, and the specification control unit displays a graph of the pulse wave amplitude along a cuff pressure axis as the result information on the display unit.

[0011] Preferably, further included are: a cuff to be wrapped around a predetermined measurement site of a person to be measured; a setting unit for setting the pressure in the cuff; a detection unit for detecting a cuff pressure representing the pressure in the cuff; and a measurement processing unit for measuring a blood pressure value of the person to be measured based on the cuff pressure detected by the detection unit.

[0012] Preferably, the specification control unit further comprises a second calculation section for calculating a reliability degree of each of the measured values ​​based on the first measurement results, and the display unit further displays the reliability degree corresponding to each of the measured value data as well as the result information.

[0013] Preferably, the specification control unit further comprises an extraction section for extracting a specification candidate based on the reliability level from the first measurement data by the user. The display unit displays the measurement data extracted as the specification candidates so that it is distinguishable from the other measurement data when displaying the result information.

[0014] Preferably, the first measurement results each comprise the first measurement value data of a blood pressure value and pulse wave related information, wherein each pulse wave related information further comprises a plurality of pulse wave amplitude value data items and a plurality of pressure value data items each corresponding to the plurality of pulse wave amplitude value data items.

[0015] Preferably, the specification control unit displays a diagram of the pulse wave amplitude along a cuff pressure axis as the result information for each of the first measurement results based on the pulse wave-related information on the display unit.

[0016] Preferably, the first calculation unit calculates a statistical value of a pulse waveform included in each of the second measurement results.

[0017] Preferably, the first measurement results represent measurement results for a predetermined number of time points.

[0018] Preferably, the first measurement results represent the measurement results corresponding to a classification type specified by the user.

[0019] Preferably, the classification type is defined in advance as a period and / or identification information of a person to be measured and / or a measurement condition.

[0020] According to another aspect of this invention, there is provided a biological information display system comprising a biological information measuring device and a biological information display device, wherein the biological information measuring device comprises: a measurement processing unit for measuring biological information of a person to be measured; and an output unit for outputting first measurement results for a plurality of time points measured by the measurement processing unit. The biological information display device comprises: an input unit for inputting the first measurement results; a display unit; an operation unit for receiving an instruction from a user; and a specification control unit for controlling to specify a second measurement result to be used in calculating a statistical value from the first measurement results.The specification control unit includes a specification processing section for specifying the second measurement result based on an instruction received from the operation unit when displaying result information of the first measurement results. The specification processing section specifies the measurement result other than the specified measurement result as the second measurement result when the received instruction specifies the specification of data to be eliminated from the first measurement results, and specifies the specified measurement result as the second measurement result when the received instruction specifies the specification of data to be calculated from the first measurement results. The biological information display unit further includes a first calculation unit for calculating the statistical value of the specified second measurement result, and the display unit displays the calculated statistical value.

[0021] According to yet another aspect of this invention, there is provided a statistical processing method for calculating and displaying a statistical value of measurement results of biological information for a plurality of time points, the method comprising the steps of: displaying result information about the first measurement results for a plurality of time points; specifying a plurality of second measurement results to be used in the calculation of the statistical value from the first measurement results based on an instruction received from the user when displaying result information; calculating the statistical value about the specified second measurement results; and displaying the calculated statistical value.In the specifying step, the measurement result other than the specified measurement result is specified as the second measurement result when the instruction indicates the specification of data to be eliminated from the first measurement results, and the specified measurement result is specified as the second measurement result when the instruction indicates the specification of data for calculation from the first measurement results.

[0022] According to yet another aspect of this invention, there is provided a recording medium recording thereon a statistical processing program for calculating and displaying a statistical value of measurement results of biological information for a plurality of time points, the program causing a computer to perform the steps of: displaying result information about the first measurement results for a plurality of time points; specifying a plurality of second measurement results to be used in the calculation of the statistical value from the first measurement results based on an instruction from the user when displaying the result information; calculating the statistical value about the specified second measurement results; and displaying the calculated statistical value.In the specifying step, the measurement result other than the specified measurement result is specified as the second measurement result when the instruction specifies the specification of data to be eliminated from the first measurement results, and the specified measurement result is specified as the second measurement result when the instruction specifies the specification of data for calculation from the first measurement results. Results of the invention

[0023] According to the present invention, a highly accurate statistical value can be displayed because the calculation can be performed with the anomalous data (measurement result) eliminated as determined by an operator. Furthermore, an error in data selection can be recovered at any time because the data itself is not deleted. As a result, the operator can safely select only the data necessary for the calculation, and a highly reliable biological information display device can be provided. Short description of the drawings Fig. 1 is a perspective view of an external appearance of a biological information display device according to a first embodiment of the present invention. Fig. 2 is a block diagram showing a hardware structure of the biological information display device according to the first embodiment of the present invention. Fig. 3 is a functional block diagram showing a functional structure of the biological information display device according to the first embodiment of the present invention. Fig. 4(A) to 4(C) are views each showing a typical example of a pulse wave amplitude obtained in a gradual reduction process of a cuff pressure. Fig. 5(A) and Fig. 5(B) are views each for describing a blood pressure calculation method by the oscillometric method. Fig. 6(A) to 6(C) are views each showing an example of the pulse wave amplitude when noise is mixed into the pulse wave. Fig. 7 is a flowchart showing a flow of a blood pressure measuring method according to the first embodiment of the present invention. Fig. Figure 8 is a view showing an example of a data structure in a flash memory. Fig. Figure 9 shows an example of a pulse wave data structure related to information contained in the measurement result data. Fig. 10 is a flowchart showing a statistical method according to the first embodiment of the present invention. Fig. 11(A) to 11(D) are views each showing a transition example of a screen displayed in the statistical method according to the first embodiment of the present invention. Fig. 12A and Fig. 12(B) are views each showing a different transition example of the screen displayed in the statistical method according to the first embodiment of the present invention. Fig. 13 is a flowchart showing a flow of a blood pressure measuring method according to a variant of the first embodiment of the present invention. Fig. 14 is a view showing an example of a screen displayed in step S202A of Fig. 3 is displayed. Fig. 15 is a view showing a layout of a biological information display device according to a second embodiment of the present invention. Fig. 16 is a hardware block diagram showing an example of a hardware configuration in a biological information display device according to the second embodiment of the present invention. Best modes for carrying out the invention

[0024] Embodiments of the present invention will be described with reference to the drawings. The same reference symbols are indicated for the same or corresponding portions in the drawings, and their description will not be repeated.

[0025] A biological information display device of the present invention calculates and displays a statistical value of the measurement results related to biological information for a plurality of time points. In the present specification, the "biological information" is used in a treatment strategy by a medical specialist (medical personnel) who checks development and the like, and includes blood pressure information and / or body composition (body fat percentage, basal metabolism, etc.). The "blood pressure information" indicates characteristics of the circulatory system and includes a pulse wave and indexes that can be calculated from the pulse wave, such as systolic blood pressure, diastolic blood pressure, mean blood pressure, pulse rate, AI (Augmentation Index), and the like. [First embodiment]<Bezug nehmend auf das äußere Erscheinungsbild und den Aufbau>

[0026] First, the external appearance and structure of the biological information display device according to a first embodiment of the present invention will be described. In the present embodiment, the description is made assuming that the biological information concerns blood pressures (systolic blood pressure and diastolic blood pressure). (Referring to the external appearance)

[0027] Fig. 1 is a perspective view of an external appearance of a biological information display device 1 according to a first embodiment of the present invention. The biological information display device 1 has a function of measuring blood pressure and thus functions as a blood pressure monitor.

[0028] With reference to Fig. 1, the biological information display device 1 comprises a main body 10, a cuff 20 that can be wrapped around a predetermined measurement site (e.g., the upper arm) of a person to be measured, and an air tube 31 for connecting the main body 10 and the cuff 20. A display unit 40 constructed by liquid crystals and the like and an operation unit 41 for receiving instructions from a user (representatively, medical personnel such as a doctor) are arranged on a surface of the main body 10.

[0029] The operation unit 41 includes, for example, a power switch 41A for receiving an input of an instruction to turn the power ON or OFF, a measurement switch 41B for receiving an instruction to start measurement, a setting switch 41C for receiving an instruction for various types of setting methods and reading stored values, and an input pointer switch 41D. The input pointer switch 41D includes a left-direction switch 411, a right-direction switch 412, an up-direction switch 413, a down-direction switch 414, and a determination switch 415.

[0030] The main body 10 of the biological information display device 1 is placed on a table or a dedicated stand in an examination room. (Referring to the hardware structure)

[0031] Fig. 2 is a block diagram showing a hardware structure of the biological information display device 1 according to the first embodiment of the present invention.

[0032] With reference to Fig. 2, the cuff 20 of the biological information display device 1 comprises an air bag 21. The air bag 21 is connected to an air system 30 via the air tube 31.

[0033] In addition to the display unit 40 and the operation unit 41 described above, the main body 10 includes the air system 30, a CPU (central processing unit) 100 for controlling each unit in a concentrated manner and executing various calculation processes, a memory 42 for storing programs that cause the CPU 100 to perform predetermined operations and various data, a non-volatile memory (e.g., flash memory) 43 for storing a measured blood pressure, a power supply 44 for supplying power to the CPU 100, a timer unit 45 for performing a timer operation, and a data input / output unit 46 for receiving input of data from the outside.

[0034] The air system 30 includes a pressure sensor 32 for detecting a pressure (cuff pressure) in the air bag 21, a pump 51 for supplying air to the air bag 21 to increase the cuff pressure, and a valve 52 that opens and closes to deflate or trap the air in the air bag 21.

[0035] The main body 10 also includes an oscillation circuit 33, a pump drive circuit 53, and a valve drive circuit 54 in communication with the air system 30 described above.

[0036] The pressure sensor 32 is a capacitance pressure sensor in which the capacitance value changes according to the cuff pressure. The oscillation circuit 33 outputs a signal with an oscillation frequency corresponding to the capacitance value of the pressure sensor 32 to the CPU 100. The CPU 100 converts the signal received from the oscillation circuit 33 into a pressure and detects the pressure. The pump drive circuit 53 controls the drive of the pump 51 based on a control signal provided by the CPU 100. The valve drive circuit 54 performs the opening / closing control of the valve 52 based on a control signal provided by the CPU 100.

[0037] The pump 51, the valve 52, the pump drive circuit 53, and the valve drive circuit constitute a cuff pressure adjusting unit 50. It should be noted that the cuff pressure adjusting device is not limited to this.

[0038] The data input / output unit 46 performs reading and writing of programs and data from / to a removable recording medium 132. Further / alternatively, the data input / output unit 46 may send and receive programs and data to and from an external computer (not shown) through a communication line.

[0039] Although the cuff 20 includes the air bag 21, a fluid supplied to the cuff 20 is not limited to air and may be a liquid or a gel. Alternatively, the fluid is not the only case, and uniform fine particles, such as microspheres, may be used. (Referring to the functional structure)

[0040] Fig. 3 is a functional block diagram showing a functional structure of the biological information display device 1 according to the first embodiment of the present invention. Fig. For the sake of simplicity of explanation, Figure 3 shows only peripheral hardware that directly exchanges signals with each unit of the CPU 100.

[0041] With reference to Fig. 3, the CPU 100 includes a measurement processing unit 102, a specification control unit 104, and a statistical value calculation unit 106.

[0042] The measurement processing unit 102 is connected to the oscillation circuit 33, the pump drive circuit 53, and the valve drive circuit 54, and performs a process for measuring blood pressure values ​​(systolic blood pressure and diastolic blood pressure) of a subject to be measured according to a predetermined algorithm. Suppose the algorithm for calculating blood pressure does not include a correction algorithm for smoothing a pulse wave amplitude. In the present embodiment, the measurement processing unit 102 continuously performs measurements for a predetermined number of time points, but this is not the only case. The measurement processing unit 102 stores measurement result data including the measured blood pressure values ​​in the flash memory 43. The data structure of the flash memory 43 will be described later.

[0043] The measurement processing unit 102 calculates the blood pressure values ​​according to the oscillometric method. First, the blood pressure calculation method is carried out by the oscillometric method with reference to Fig. 4(A) to 6(C) are briefly described.

[0044] Fig. 4(A) to 4(C) are views each showing a typical example of a pulse wave amplitude obtained in the gradual cuff pressure reduction process. In Fig. 4(A) shows a signal of the detected cuff pressure (unit: mmHg) along a time axis. In Fig. 4(B) are pulse wave components after a filtering process along the same time axis as in the diagram of Fig. 4(A). In Fig. 4(C) is the amplitude value of the pulse wave component for each Fig. 4(B) along a cuff pressure axis. A cuff pressure PC1a, which is located on the cuff pressure axis of Fig. 4(A) and Fig. 4(C), is a pressure value at the time when the pulse wave starts to be detected, and a cuff pressure PC2a is a pressure value at the time when the pulse wave is no longer detected.

[0045] Blood flow stops when the internal pressure of the cuff becomes higher than the systolic blood pressure, and blood flow starts again when the pressure is gradually released. The oscillometric method uses the characteristics that determine the pulse wave amplitude in the method, as in Fig. 4(C).

[0046] Fig. 5(A) and Fig. 5(B) are views each for describing the blood pressure calculation method by the oscillometric method. Fig. 5(A) shows the cuff pressure (unit: mmHg) gradually changing along the time axis, and Fig. Figure 5(B) partially shows the pulse wave amplitude (unit: mmHg) for each beat superimposed on the cuff pressure along the same time axis.

[0047] With reference to Fig. 5(A), the cuff pressure is increased to be higher than or equal to the systolic blood pressure ("PC1" in the figure) of the subject to be measured, and then decreased at a constant rate. A predetermined algorithm is applied to the pulse wave amplitude superimposed on the detected cuff pressure during the gradual pressure reduction phase to calculate the systolic blood pressure and the diastolic blood pressure. Referring to Fig. 5(B), it is found that the cuff pressure corresponding to a point AMAX at which the pulse wave amplitude becomes a maximum during cuff pressure reduction is a mean blood pressure ("MAP" in the figure) in the oscillometric method. When the maximum point of the pulse wave amplitude is detected, a value obtained by multiplying a predetermined constant (e.g., 0.5) by the maximum point AMAX is adopted as a threshold TH_SYS, and a value obtained by multiplying a predetermined constant (e.g., 0.7) by the maximum point AMAX is adopted as a threshold TH_DIA. The cuff pressure higher than the mean blood pressure (MAP) and corresponding to the point where an envelope 600 of the pulse wave amplitude and the threshold TH_SYS intersect is determined as the systolic blood pressure ("SYS" in the figure).The cuff pressure lower than the mean blood pressure (MAP) and corresponding to the point where the pulse wave amplitude envelope 600 crosses the threshold TH_DIA is determined as the diastolic blood pressure (“DIA” in the figure).

[0048] As is obvious from this figure, the shape of the pulse wave amplitude envelope affects the accuracy of blood pressure value calculation in the oscillometric method. Fig. 5(A) and Fig. 5(B), the pressure reduction measurement method (method of calculating blood pressure based on the pulse wave measured during pressure reduction) was described as an example, but the same applies to the pressure increase measurement method.

[0049] Fig. 6(A) to 6(C) are views each showing an example of the pulse wave amplitude when noise is mixed into the pulse wave. The diagrams of Fig. 6(A), Fig. 6(B) and Fig. 6(C) correspond to the diagrams of Fig. 4(A), Fig. 4(B) and Fig. 4(C). In Fig. 6(C), there is a pulse wave amplitude ER that has an apparently abnormal value among a plurality of pulse wave amplitudes. When the blood pressure is calculated based on such a plurality of pulse wave amplitudes, the cuff pressure at the time of the amplitude ER is determined as the mean blood pressure, and thus an inaccurate blood pressure value is calculated. Even with a blood pressure monitor that has a correction algorithm for automatically detecting noise and removing the detected noise, in most cases it is unknown what kind of process is being performed internally. Even if the process is known, an incorrect correction process may be performed for medical personnel, in which case the measurement must be performed again.

[0050] The presence of abnormal pulse wave amplitude ER, as in Fig. 6(C) can be easily detected by medical personnel (medical professionals) with sufficient knowledge of blood pressure. Medical personnel can also determine an abnormal blood pressure value, that is, a blood pressure value superimposed with disturbances, simply by checking the blood pressure values ​​for a variety of time points.

[0051] In the present embodiment, when a plurality of measurement results are displayed as targets before calculating the statistical value, the determination of a measurement result that is not suitable for calculating the statistical value can be made from the plurality of displayed measurement results. In the present embodiment, the measurement result specified by the user as an elimination target is not used for calculating the statistical value, but the calculation can be performed again as many times as necessary by not erasing the memory (flash memory 43) even in a case where the determination is made incorrectly. As a result, the diagnosis of the person to be measured by the medical personnel can be assisted because an accurate statistical value can be calculated.Medical personnel can safely perform the specification procedure because the measurement result specified as the elimination target is not deleted from the memory.

[0052] Referring again to Fig. 3, the specification control unit 104 performs control for specifying at least one second measurement result used for calculating the statistical value from a plurality of first measurement results. In the present embodiment, the "plurality of measurement results" is for an immediate predetermined number of time points. When an instruction to calculate the statistical value is input by the user or when the continuous measurements of the blood pressure are terminated, the specification control unit 104 displays the result information about the measurement results for the predetermined number of time points. The displayed result information includes at least the blood pressure value data (also referred to as "first blood pressure value data") for the predetermined number of time points stored in the flash memory 43, and / or preferably includes pulse wave amplitude information (e.g.,diagram) for all initial blood pressure data.

[0053] The specification control unit 104 includes a specification processing section 116. When the above result information is displayed, the specification processing section 116 executes, based on an instruction signal from the operation unit 41, a process for specifying the second measurement result to be used in the calculation of the statistical value. Specifically, a plurality of blood pressure value data (also referred to as "second blood pressure value data") to be used in the calculation of the statistical value is specified from the first blood pressure value data for the predetermined number of time points. When a predetermined instruction is input from the operation unit 41, the specification processing section 116 can reset the specification with respect to the second blood pressure value data.

[0054] In Fig. 3, for the sake of simplicity of description, a reliability degree calculation section 112 and an extraction section 114 used in a variant to be described later are also shown, but it is assumed that they are not included in the specification control unit 104 of the present embodiment.

[0055] The statistical value calculation unit 106 calculates the statistical value of the second measurement result specified by the specification processing section 116. The calculated statistical value is displayed on the display unit 40.

[0056] The operation of each functional block described above may be realized by executing software stored in the memory 42, or at least one may be realized by hardware. <Bezug nehmend auf den Betrieb>

[0057] Fig. 7 is a flowchart showing the flow of a blood pressure measurement method according to the first embodiment of the present invention. The program according to the flowchart is stored in advance in the memory 42, and the function of the blood pressure measurement method is realized when the CPU 100 reads and executes the program. It is assumed that the following process starts when the pressing of the power switch 41A is detected. It is assumed that the operation of the operation unit 41 including the power switch 41A is performed by medical personnel. Therefore, subsequent processes can be started only when a predetermined operation (e.g., simultaneous pressing of a plurality of switches, etc.) is performed after the power switch 41A is pressed. Alternatively, the biological information display device 1 may include an authentication information acquisition unit 48 (see Fig. 2) for acquiring user authentication information. In this case, the CPU 100 can only begin subsequent processes when it is determined that the authentication information acquired by the authentication information acquiring unit 48 matches the authentication information 48 stored in advance in the memory 42. A fingerprint or information recorded on an ID card is used as the authentication information.

[0058] With reference to Fig. 7, the CPU 100 first receives the input of a patient ID based on a signal from the operation unit 41 (step S100). When the measurement switch 41B is subsequently pressed, continuous measurements of blood pressure values ​​are performed according to a known method.

[0059] Specifically, the measurement processing unit 102 executes an initialization process (step S102). Specifically, a predetermined area of ​​the memory 42 is initialized, the air in the airbag 21 is vented, and a correction of the pressure sensor 32 is performed. Then, when the measurable state is realized, the measurement processing unit 102 starts driving the pump 51 and gradually increases the cuff pressure of the airbag 21 (step S104).

[0060] When the cuff pressure reaches a predetermined level for blood pressure measurement in the gradual pressure increase process, the measurement processing unit 102 gradually decreases the cuff pressure (step S106). Specifically, the pump 51 is stopped, and the closed valve 52 is gradually opened to gradually deflate the air in the airbag 21. The measurement processing unit 102 acquires a signal from the oscillation circuit 33 and acquires the cuff pressure during the pressure decrease period. The acquired cuff pressure data is then recorded in time order in an internal memory. In the present embodiment, the pulse wave is measured during the decreasing cuff pressure, but it may, of course, be measured during the increasing cuff pressure.

[0061] The measurement processing unit 102 extracts the pulse wave amplitude (pulse wave amplitude value for a plurality of beats) as an oscillation component from the pulse wave measured according to the oscillometric method described above, and calculates blood pressure values ​​(systolic blood pressure and diastolic blood pressure) and the number of pulse beats (step S108). Each extracted pulse wave amplitude is stored in the internal memory according to the cuff pressure data or the time data. After the blood pressure values ​​are calculated, the measurement result for that time is stored in a corresponding measurement result storage area of ​​the flash memory 43 (step S109).

[0062] An example of a data structure in the flash memory 43 in the present embodiment is shown in Fig. 8. With reference to Fig. 8, the flash memory 43 includes the measurement result area for each patient ID. Each measurement result area stores measurement result data M1 to Mm (m = 1, 2, 3, ...) for each individual measurement. Each measurement result data Mk includes date and time data 81 representing the measurement date and time, measurement value data 82 including the systolic blood pressure data, the diastolic blood pressure data, the pulse count data, and pulse wave-related information 83. The measurement value data 82 may not include the pulse count data. The measurement value data, the measurement date and time data, and the pulse wave-related information only need to correspond to each other for each measurement, but are not limited to such storage form. The pulse wave-related information does not necessarily need to be included in the measurement result data.

[0063] In step S109 of Fig. 7, the measurement result data is stored in the measurement result storage area corresponding to the patient ID input in step S100.

[0064] An example of a data structure of the pulse wave related information 83 is shown in Fig. 9. With reference to Fig. 9, the pulse wave-related information includes three elements: an element 831 indicating the time data, an element 832 indicating the cuff pressure data, and an element 833 indicating the extracted pulse wave amplitude data. The cuff pressure data is extracted according to the time data representing the time when the cuff pressure is detected, and the pulse wave amplitude data only needs to be stored according to the time data or the cuff pressure data. Assume that the numerical value including "0" is recorded in the pulse wave amplitude data.

[0065] Referring again to Fig. 7, the measurement processing unit 102 determines whether measurements are being performed for a predetermined number of time points N (e.g., six time points) (step S110). If fewer than six time points are determined (NO in step S110), the process returns to step S102, and the sequence of steps is repeated. If it is determined that the measurements for six time points are completed (YES in step S110), the statistical process is executed (step S112).

[0066] The statistical procedure is described with reference to the subroutine of Fig. 10 and Fig. 11(A) to 11(D). Fig. 10 is a flowchart showing the statistical method according to the first embodiment of the present invention. Fig. 11(A) to 11(D) are views each showing a transition example of a screen displayed in the statistical method according to the first embodiment of the present invention.

[0067] With reference to Fig. 10, the statistical value calculation unit 106 first calculates N (six) statistical values, such as averages, of the continuously measured values ​​(systolic blood pressure, diastolic blood pressure, and pulse rate) (step S200). When the statistical processing is started, it is assumed that the date and time data 81 and the measured value data 82 are read out from the flash memory 43 from the measurement result data for six points in time and are expanded in the internal memory.

[0068] The specification control unit 104 then displays the calculated mean values ​​and the measurement result list on the display unit 40 (step S202). The example of the screen display is shown in Fig. 11(A).

[0069] With reference to Fig. 11(A), the statistical values ​​of the measurement values ​​for six time points calculated in step S200 are displayed in a predetermined area 61 of the display unit 40. Specifically, the mean value of the systolic blood pressure, the mean value of the diastolic blood pressure, and the mean value of the number of pulse beats are displayed. A measurement result list 62 is displayed below the area 61. The measurement result list 62 is constructed by the time item, the blood pressure value item (systolic blood pressure / diastolic blood pressure), and the pulse beat item, and the values ​​of such items included in the respective measurement result data for six time points are displayed in the list. Each row constructing the measurement result list 62 will be referred to as the "measurement data" in the following description.

[0070] The medical staff can decide whether there is a blood pressure that is abnormal or not suitable for calculating the statistical values ​​by looking at the six measurement data items that make up the measurement result list 62.

[0071] The specification control unit 104 then determines whether or not a data selection instruction is input by the operation unit 41 (step S203). If the data selection instruction is not input (NO in step S203), the process is terminated.

[0072] When the data selection instruction is input (YES in step S203), the specification processing section 116 of the specification control unit 104 receives the specification of the measurement data as an elimination candidate from the medical personnel (step S204). Examples of display screens after receiving the specification of the measurement data as the elimination candidates are shown in Fig. 11(B) and Fig. 11(C).

[0073] Fig. 11(B) shows an example in which a measurement data item 70 is selected as the elimination candidate as a result of the operation of the input pointer switch 41D. The specification processing section 116 stores, for example, a flag (F=1) (hereinafter referred to as an "elimination flag") for identifying that the measurement value included in the measurement data 70 (hereinafter referred to as the "selected measurement value") selected as the elimination candidate is the data item corresponding to the selected measurement value as the elimination target (elimination candidate in this phase).

[0074] For example, when the determination switch 415 is pressed while the measurement data 70 is selected, the specification processing section 116 preferably reads out the pulse wave-related information 83 corresponding to the measurement data 70 from the flash memory 43 and displays the screen as shown in Fig. 11(C).

[0075] In Fig. 11(C), instead of the measurement result list 62, a graph 72 showing the pulse wave amplitude along the cuff pressure axis (or the time axis) is displayed. The graph 72 shows the change in the pulse wave amplitude corresponding to the pressure increase of the cuff 20, which is used in the calculation of the blood pressure value (hereinafter referred to as the "selected blood pressure value") included in the selected measurement value. Medical personnel can easily determine whether the selected blood pressure value is an abnormal value containing noise or not, that is, whether or not data is suitable for calculating the statistical values, by displaying the graph 72.

[0076] A button 73A for confirming that the selected measured value is set as the elimination target and a button 73B for confirming that the selected measured value is not set as the elimination target are displayed below the graph 72. For example, when the button 73A is pressed (YES in step S206), the specification processing section 116 specifies the measured value without the elimination mark, that is, the measured value specified by the user, as the measured value to be used in the calculation of the average values. The statistical value calculation unit 106 then calculates the statistical values ​​for the plurality of measured values ​​with the selected measured value eliminated (step S208). Specifically, the average values ​​of the respective measured values ​​(systolic blood pressure, diastolic blood pressure, and the number of pulse beats) that do not have elimination marks are measured.The calculated mean values ​​are displayed on the display unit 40 (step S210).

[0077] Fig. 11(D) is a view showing an example of a screen displayed in step S210 of Fig. 10 is displayed. With reference to Fig. 11(D), the average values ​​(average systolic blood pressure, average diastolic blood pressure, and average pulse rate) after the selected measurement value is eliminated are displayed in the area 61. The measurement data 70 including the measurement value confirmed as the elimination target in the measurement result list 62 is shown by a double-dashed line, etc., to indicate that it is eliminated. A mark (e.g., "*") 74 indicating the average value after the elimination of at least one piece of data is preferably displayed near each of the average systolic blood pressure and the average diastolic blood pressure displayed in the area 61. Notification that the displayed average value after elimination is obtained may be made using an LED (Light Emitting Diode) or a buzzer (not shown) instead of displaying the mark 74.

[0078] If the Fig. 11(C) is pressed (NO in step S206), the process returns to step S204, and the screen as shown in Fig. 11(B) is displayed again.

[0079] After step S210, the specification control unit 104 determines whether the termination instruction is input or not (step S212). If it is determined that the termination instruction is input (YES in step S212), the statistical process is terminated. If the termination instruction is not input (NO in step S212), the process proceeds to step S214.

[0080] In step S214, the specification control unit 104 determines whether the reset instruction is input or not. If it is determined that the reset instruction is input (YES in step S214), the elimination flag is cleared to be reset to a state without an elimination target (step S216), and the process returns to step S204. If the reset instruction is not input (NO in step S214), the process returns to step S204 without clearing the elimination flag.

[0081] Therefore, in the present embodiment, even if the elimination target is erroneously specified as the elimination target, it can be specified as many times as necessary because the measurement result data itself eliminated from the calculation of the average values ​​is not deleted from the flash memory 43. Furthermore, because the pulse wave amplitude graph used in the calculation of the blood pressure value is also displayed next to the blood pressure value when selecting the elimination target, the medical personnel can easily determine whether the corresponding blood pressure value is an abnormal data item.

[0082] In the present embodiment, the measurement result data can be automatically deleted only when the flash memory 43 has a predetermined capacity. In such a case, for example, the oldest data can be deleted.

[0083] In the above-described embodiment, the pulse wave amplitude value graph is displayed only for the selected blood pressure value, but in a case where the display area of ​​the display unit 40 is large, the pulse wave amplitude graph may be displayed immediately for N time points alongside / instead of the blood pressure values ​​for N time points. Furthermore, the pulse wave amplitude graph is displayed in the present embodiment, but alternatively, the filtered pulse wave may be displayed along the time axis.

[0084] In the flowchart of Fig. 10, at the time of transition to the statistical method, the statistical values ​​for N measurement values ​​are calculated and displayed, but the statistical values ​​may be calculated and displayed for the first time at the time the elimination target is confirmed. In this case, the statistical values ​​for N measurement values ​​are calculated and displayed when the instruction not to select data is input (NO in step S203).

[0085] In the present embodiment, the measurement data as the elimination target is selected by the medical staff, but the medical staff may select the measurement data to be used in the calculation of the mean value from the measurement data for N time points. Fig. 12(A) and Fig. 12(B) are views each showing another transition example of a screen displayed in the statistical method according to the first embodiment of the present invention.

[0086] Fig. 12(A) shows an example of a screen displayed in step S202 of Fig. 10 is displayed. In this case, no numerical value is displayed in the area 61 of the display unit 40 because the mean value has not yet been calculated. Fig. 12(B) shows a state in which three pieces of measurement data 70 are selected from the measurement data for six points in time as data to be used in the calculation of the mean value. Thus, when one or more pieces of measurement data are selected, the selected measurement value, that is, the measurement value specified by the user, is specified by the specification processing section 116 as the measurement value to be used in the calculation of the mean value. Consequently, the mean value of the respective measurement values ​​included in the three pieces of selected measurement data 70 is displayed in the area 61.

[0087] Furthermore, in the present embodiment, after the completion of continuous measurements for N time points, the measurement results for N time points are displayed, and then the specification of the measurement data is received as the elimination target. Alternatively, the measurement result may be displayed each time a measurement is completed, to select each time whether or not to select the result as the elimination target.

[0088] The number of continuous measurements is set to a predefined number, but can be set and changed by the user (medical staff). Furthermore, all measurement values ​​corresponding to the specified person to be measured (patient identifier) ​​can be set as the target, regardless of whether the continuous measurement function is provided or not.

[0089] In the present embodiment, use by a plurality of people to be measured is assumed, but use may be made only by one person to be measured with, for example, a portable blood pressure monitor. In such a case, the latest blood pressure values ​​for a specified number of time points (e.g., a predetermined number of times) from the blood pressure values ​​(measured values) for a plurality of time points measured in the past can simply be set as the targets.

[0090] Alternatively, the measured values ​​measured in a specific period (morning period, evening period, etc.) or a specific time period (one day, one week, one month, etc.) can be set as the targets. The specific period and the specific time period can be defined in advance or can be specified by the user. Further alternatively, the input of measurement conditions can be received at the time of measurement, and the information about the measurement conditions can also be included in the measurement result data. In this case, the measured value corresponding to the measurement conditions specified by the user can be set as the target. The measurement conditions include at least the measurement location (e.g., office, home, etc.) and a drug administration result.

[0091] In the present embodiment, the mean value is used for the statistical value, but it may be a most frequent value, a maximum value, a minimum value, a deviation, a sighted mean, or the like, as long as it is a statistical value. A development chart or a change rate of the measured values ​​for a plurality of time points may be calculated in addition to / instead of the statistical value(s) of the measured values ​​for a plurality of time points. <variante>

[0092] A variant of the first embodiment of the present invention will be described next. The specification control unit 104 further includes a reliability degree calculation section 112 and an extraction section 114.

[0093] The reliability degree calculation section 112 calculates a reliability degree for each measured value based on the measurement result data for N time points.

[0094] The extraction section 114 extracts a measurement value as an elimination candidate from the measurement values ​​for N time points based on the reliability degree calculated by the reliability degree calculation section 112.

[0095] Fig. Fig. 13 is a flowchart showing a blood pressure measurement method according to the variant of the first embodiment of the present invention. The same steps as those in Fig. 7 are designated by the same step numbers. Therefore, the description of these steps will not be repeated.

[0096] With reference to Fig. 13, in the present variant, steps S300 and S302 are inserted between the processing in step S200 and the processing in step S202. Furthermore, step S202A is executed instead of step S202.

[0097] In step S300, the reliability degree calculation section 112 calculates a reliability degree of the blood pressure values ​​for N time points. A correction rate in a case where a half-value method or the like is performed on the pulse wave amplitude value sequence (pulse wave amplitude values ​​for a plurality of beats) to smooth it can be used for calculating the reliability degree. Specifically, the calculation can be performed as "Reliability Degree (%) = 100 - Correction Rate." The calculation of the correction rate is conventionally performed as described in Japanese Unexamined Patent Publication No. H07-236617. The method for calculating the reliability degree is not particularly limited, and any method other than the above can be used.

[0098] In step S302, the extraction section 114 extracts the blood pressure value as the elimination candidate from the N blood pressure values ​​based on the reliability calculated in step S300. Specifically, for example, the blood pressure value whose reliability is less than a specific value is determined as the elimination candidate. In this case, the specific value may be a predetermined value (e.g., 80%) or may be a value specified by the user.

[0099] In step S202A, the blood pressure measurement data extracted as the elimination candidate in step S302 is displayed to be recognizable from other measurement data. An example of a display screen is shown in Fig. 14 shown.

[0100] With reference to Fig. 14, the average values ​​of six blood pressure values ​​are displayed in the area 61, while a predetermined mark 65 is displayed near the second measurement data from the top, which is designated as the elimination candidate from the six measurement data items constituting the measurement result list 62. Thus, medical personnel can easily designate the measurement data as the elimination target.

[0101] The elimination candidate is extracted, and the measurement data determined for the elimination candidate is displayed to be recognizable from other measurement data, but in addition to / instead of this, the reliability levels for respective measurement values ​​calculated in step S300 may be displayed in association with the measurement values. [Second embodiment]

[0102] In the first embodiment and its variant, the biological information display device performs both the measurement of biological information (e.g., blood pressure) and statistical processing (calculation and display of statistical values). In a second embodiment of the present invention, on the other hand, the respective processes are carried out in different devices.

[0103] It is assumed that the biological information is blood pressure also in the present embodiment, and only portions different from those of the first embodiment will be described below.

[0104] Fig. 15 is a view showing an outline of a biological information display system 1000 according to the second embodiment of the present invention.

[0105] With reference to Fig. 15, the biological information display system 1000 includes a biological information measuring device 300 and a biological information display device 200. The biological information measuring device 300 is used at home outside of hospitals. The biological information measuring device 300 records blood pressure measurement information in a removable recording medium 132. The biological information display device 200 reads the blood pressure measurement information from the recording medium 132 to perform a statistical value calculation and display process based on blood pressure values ​​measured in the biological information measuring device 300.

[0106] The biological information measuring device 300 may be a portable blood pressure monitor or the like. The hardware structure of the biological information measuring device 300 is similar to that shown in Fig. 2. However, the authentication information acquisition unit 48 may not be arranged therein. The biological information display device 200 according to the present embodiment may be an ordinary PC (personal computer).

[0107] The blood pressure measurement information recorded in the recording medium 132 includes a plurality of Fig. 8 shown measurement result data.

[0108] Fig. 16 is a hardware block diagram showing an example of the hardware structure in the biological information display device 200.

[0109] With reference to Fig. 16, the biological information display device 200 includes a main body 210, a monitor 220, a keyboard 230, and a mouse 240, and the main body 210 includes a CPU 211, a memory 212, a hard disk 213 serving as a storage device, an FD (Flexible Disk) drive device 214, a CD-ROM (Compact Disc Read Only Memory) drive device 215, and an interface unit 216. These hardware parts are connected to each other by a bus.

[0110] An FD 214a is installed in the FD drive device 214, and a CD-ROM 215a is installed in the CD-ROM drive device 215. The biological information display device 200 according to the present embodiment is realized such that the CPU 211 executes software using hardware such as the memory 212. Generally, such software is stored in a recording medium such as the FD 214a or the CD-ROM 215a, or is circulated through the network or the like. The software is read out from the recording medium by the FD drive device 214, the CD-ROM drive device 215, or the like, or is received via a communication interface (not shown) to be stored in the hard disk 213. Furthermore, the software is read out from the hard disk 213 to the memory 212 and is executed by the CPU 211.

[0111] The monitor 220 is a display unit for displaying blood pressure information and the like output from the CPU 211, and is configured by an LCD (liquid crystal display), a CRT (cathode ray tube), or the like. The mouse 240 receives a command from a user (representing a person who makes the diagnosis, such as a medical specialist) in accordance with an operation such as a click or a slide. The keyboard 230 receives a command from the user in accordance with an input key. The CPU 211 is an arithmetic processing unit for performing various types of calculations by sequentially executing programmed instructions. The memory 212 stores various types of information in accordance with the execution of the program by the CPU 211.The interface unit 216 is a section for receiving blood pressure measurement information from the biological information measurement device 300, and in the present embodiment, is configured by a slot in which the recording medium 132 can be installed, a peripheral circuit for controlling the slot, and the like. The recording medium 132 may be configured as a communication interface capable of data communication with the biological information measurement device 300 instead of the slot in which the recording medium 132 can be installed. The hard disk 213 is a non-volatile storage device for storing the program to be executed by the CPU 211 and the blood pressure measurement information received from the biological information measurement device 300.Other output devices, such as a printer, may be connected to the biological information display device 200 as needed.

[0112] The CPU 211 performs control for specifying the blood pressure value to be used in the calculation of the statistical value, calculating and displaying the statistical value, and the like based on the blood pressure measurement information stored in the hard disk 213.

[0113] The CPU 100 of the biological information measuring device 300 includes at least the function of the measurement processing unit 102 from the functional blocks of the Fig. 3. Specifically, the CPU 100 executes the processing in steps S102 to S110 in the flowchart of Fig. 7. In step S109, the measurement result can be directly recorded in the recording medium 132. If the biological information measuring device 300 does not have the continuous measurement function, the processing in step S110 (determining the number of times) cannot be executed.

[0114] The CPU 211 of the biological information display device 200 includes at least the functions of the specification control unit 104 and the statistical value calculation unit 106 from the functional blocks of the Fig. 3. The CPU 211 reads the measurement result data for N points in time that were last measured from the hard disk 213 and executes a series of operations shown in the flowchart of Fig. 10 statistical procedures shown.

[0115] Alternatively, the statistical processing method performed by the above-described biological information display devices 1, 200 may be provided as a program. The program according to the present invention may be for calling a necessary module from among program modules provided as part of the operating system (OS) of the computer in a predetermined arrangement at a predetermined timing and executing the method. In such a case, the program itself does not include the above-described module, and the method is executed in cooperation with the OS. The program not including such a module is also applicable to the program of the present invention.

[0116] The program according to the present invention may be provided by being incorporated as part of another program. In this case, the module included in the other program is also not included in the program itself, and the method is executed in cooperation with the other program. Such a program incorporated in another program is also applicable to the program according to the present invention.

[0117] The embodiments disclosed herein are illustrative in all aspects and should not be interpreted as limiting. The scope of the present invention is defined by the claims rather than the description given above, and all modifications that are consistent with the meaning of the claims and are within their scope are intended to be embraced therein. Description of the symbols 1,200 display device for biological information 10 main bodies 20 cuff 21 Airbag 30 Air system 31 Air hose 32 pressure sensor 33 resonant circuit 34 Valve 40 display unit 41 Control unit 41A current switch 41B measuring switch 41C Fixing switch 41D Input pointer switch 42 storage 43 Flash memory 44 Power supply 45 timer unit 46 Data input / output unit 48 Authentication information acquisition unit 50 setting unit 51 Pump 52 Valve 53 Pump drive unit 54 Valve drive unit 100 CPU 102 Measurement processing unit 104 Specification control unit 106 Calculation unit for statistical values 112 Reliability level calculation unit 114 Extraction unit 116 Specification processing section 132 Recording medium 210 main body 211 CPU 212 memory 213 Hard drive 214 FD drive 215 CD-ROM drive 216 Interface unit 220 monitors 230 keyboard 240 Mouse 300 measuring device for biological information 411 Left-facing switch 412 Right-facing switch 413 Up switch 414 Down switch 415 Determination switch 1000 biological information display system< / variante>

Claims

[1] A biological information display device (1, 200) capable of calculating and displaying a statistical value from measurement results of biological information for a plurality of time points, the biological information display device comprising: a display unit (40); an operating unit (41) for receiving an instruction from a user; a storage unit (43) for storing the measurement results of the biological information for the plurality of time points as first measurement results; and a specification control unit (104) for controlling to specify a second measurement result to be used in the calculation of the statistical value from the first measurement results, wherein the specification control unit (104) comprises a specification processing section (116) for specifying the second measurement result based on an instruction received from the operation unit (41) when result information about the first measurement results is displayed, further comprising a first calculation unit (106) for calculating the statistical value with the specified second measurement result, and the display unit (40) displays the calculated statistical value, wherein the specification processing section (116) specifies the measurement result other than the specified measurement result as the second measurement result when the received instruction indicates the specification of data to be eliminated from the first measurement results, and wherein the specification processing section (116) specifies the specified measurement result as the second measurement result when the received instruction indicates the specification of data for calculation from the first measurement results. [2] A biological information display device according to claim 1, wherein the first measurement results each comprise first measurement data, the specification control unit (104) displays the first measured value data on the display unit as the result information, and the first calculation unit (106) calculates the statistical value of the second measurement data contained in the respective second measurement results. [3] A biological information display device according to claim 2, wherein all of the first measurement data are data of a blood pressure value, each of the first measurement results further comprises a plurality of pulse wave amplitude value data items and a plurality of pressure value data items corresponding to the respective items of the plurality of pulse wave amplitude value data, and the specification control unit (104) displays a diagram of the pulse wave amplitude along a cuff pressure axis as result information on the display unit. [4] A biological information display device according to claim 3, further comprising: a cuff (20) to be wrapped around a predetermined measuring point of a person to be measured; an adjustment unit (50) for adjusting the pressure in the cuff (20); a detection unit (32) for detecting a cuff pressure representing the pressure in the cuff (20); and a measurement processing unit (102) for measuring a blood pressure value of the person to be measured based on the cuff pressure detected by the detection unit. [5] The biological information display device according to claim 2, wherein the specification control unit (104) further comprises a second calculation section (112) for calculating a reliability degree of each of the measurement values ​​based on the first measurement results, and the display unit (40) further displays the reliability degree corresponding to each of the measurement value data as well as the result information. [6] The biological information display device according to claim 5, wherein the specification control unit (104) further comprises an extraction section (114) for extracting a specification candidate based on the degree of reliability from the first measurement value data by the user, and the display unit (40) displays the measurement value data extracted as the specification candidate so as to be distinguishable from the other measurement value data when displaying the result information. [7] A biological information display device according to claim 1, wherein the first measurement results each include the first measurement data of a blood pressure value and pulse wave-related information, each pulse wave-related information further comprises a plurality of pulse wave amplitude value data items and a plurality of pressure value data items each corresponding to the plurality of pulse wave amplitude value data items, and the specification control unit (104) displays a diagram of the pulse wave amplitude along a cuff pressure axis as the result information for each of the first measurement results based on the pulse wave-related information on the display unit. [8] The biological information display device according to claim 7, wherein the first calculation unit (106) calculates a statistical value of a pulse waveform included in each of the second measurement results. [9] The biological information display device according to claim 1, wherein the first measurement results represent measurement results for a predetermined number of time points. [10] The biological information display device according to claim 1, wherein the first measurement results represent the measurement results corresponding to a classification type specified by the user. [11] The biological information display device according to claim 10, wherein the classification type is defined in advance as a period and / or identification information of a person to be measured and / or a measurement condition. [12] A biological information display system (1000) comprising a biological information measuring device (300) and a biological information display device (200), wherein the biological information measuring device (300) comprises: a measurement processing unit (102) for measuring biological information of a person to be measured; and an output unit (46) for outputting first measurement results for a plurality of times measured by the measurement processing unit (102), wherein the biological information display device (200) comprises: an input unit (216) for inputting the first measurement results; a display unit (220); an operating unit (230, 240) for receiving an instruction from a user; and a specification control unit (104) for controlling to specify a second measurement result to be used in the calculation of a statistical value from the first measurement results, wherein the specification control unit (104) comprises a specification processing section (116) for specifying the second measurement result based on an instruction received from the operation unit when result information of the first measurement results is displayed, further comprising a first calculation unit (106) for calculating the statistical value of the specified second measurement result, and the display unit (40) displays the calculated statistical value, wherein the specification processing section (116) specifies the measurement result other than the specified measurement result as the second measurement result when the received instruction indicates the specification of data to be eliminated from the first measurement results, and wherein the specification processing section (116) specifies the specified measurement result as the second measurement result when the received instruction indicates the specification of data for calculation from the first measurement results. [13] A statistical processing method for calculating and displaying a statistical value of measurement results of biological information for a plurality of time points, the method comprising the following steps: Displaying result information about the first measurement results for a plurality of time points (S202); specifying a plurality of second measurement results to be used in calculating the statistical value from the first measurement results based on an instruction received from the user when displaying result information; Calculating the statistical value over the specified second measurement results (S208); and Display the calculated statistical value (S210) where in the specifying step, the measurement result other than the specified measurement result is specified as the second measurement result when the instruction indicates the specification of data to be eliminated from the first measurement results, and in the specification step, the specified measurement result is specified as the second measurement result when the instruction indicates the specification of data for calculation from the first measurement results. [14] A recording medium having recorded thereon a statistical processing program for calculating and displaying a statistical value of measurement results of biological information for a plurality of time points, the program causing a computer to perform the following steps: Displaying result information about the first measurement results for a plurality of time points (S202); specifying a plurality of second measurement results to be used in calculating the statistical value from the first measurement results based on an instruction received from the user when the result information is displayed; Calculating the statistical value over the specified second measurement results (S208); and Display the calculated statistical value (S210), where in the specifying step, the measurement result other than the specified measurement result is specified as the second measurement result when the instruction indicates the specification of data to be eliminated from the first measurement results, and in the specifying step, the specified measurement result is specified as the second measurement result when the instruction indicates the specification of data for calculation from the first measurement results.

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