JPS58188429A - Apparatus for measuring blood pressure and pulse - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a wristwatch for measuring blood pressure and heart rate, and in particular includes a relatively simple digital circuit that measures systolic and diastolic blood pressure and quickly and accurately measures heart rate. Regarding things like watches.

Pulse rate and blood pressure are important factors in diagnosing human health and the physical state of the human body in response to physical or emotional stress. Periodic monitoring of these physical parameters is especially important for individuals with heart disease or hypertension.

However, physically healthy individuals also desire to periodically monitor their body temperature and blood pressure during stressful situations, such as when engaged in strenuous work.

Therefore, there is a need for a device that can easily and quickly measure an individual's power and blood pressure, and that does not require a considerable amount of training to operate. It is also important that such a device be compact and uncomplicated to use and therefore be easily used in a variety of situations.

Therefore, the blood pressure and blood pressure measuring device according to the present invention is mounted on the wrist and is mounted on the body, and also displays the time using the body. Electronic circuitry within the device is used to measure the frequency and force of blood pressure pulses through the radial artery in the wrist. The aircraft then displays the power readings in pulses per minute and the systolic and diastolic blood pressures in millimeters of mercury.

, wrist-mounted frequency measuring devices are known in the art and are disclosed, for example, in U.S. Pat. No. 5,807,388, in which the duration of a heartbeat is measured at a known frequency. It is measured by counting the electron pulses that occur. The duration of the heartbeat is then correlated to a particular average 6-beat frequency.

However, the measuring device of the above-mentioned patent has a heart rate 'tl
- Not measured directly and is therefore subject to measurement inaccuracies due to instability of the heartbeat duration over short time intervals.

Also, U.S. Pat. No. 4,120,296 discloses a six-beat frequency measuring wristwatch in which electrical pulses with a specific frequency are generated over intervals between six-beat pulses to The contents of the counter are stored briefly and then displayed, and the counter is cleared every 15 seconds to produce updated frequency data. However, this 4! The proposed device is quite complex and employs an integrator and associated oscillator to generate electrical timing pulses, and these pulses are counted between 6 frequency pulses; The operation of the oscillator and oscillator is accompanied by errors caused by the IJ raft.

Accordingly, it is an object of the present invention to provide a relatively simple and accurate device for non-invasively measuring an individual's heart rate.

Another object of the invention is to provide a power measuring device which can be carried in a wristwatch and used to digitally display 6 strokes in units of pulses per minute.

It is proposed in U.S. Pat. No. 2,756,741 that the display of cardiac systolic blood pressure be performed by employing an arm-mounted vehicle that analyzes the strength of the blood pressure pulse through the radial artery of the wrist. . That is, by attaching a piezoelectric effect transuser near the radial artery of the wrist,
It generates an electrical signal that corresponds to a blood pressure pulse passing through the artery. The electrical signal from the transducer is applied to a vacuum tube circuit that includes a peak detector that generates a voltage corresponding to the systolic blood pressure occurring at the peak of each blood pressure pulse. The peak detection signal is applied to a differential amplifier and an associated meter displays the change in detected systolic blood pressure relative to a normal, calibrated blood pressure.

The blood pressure measuring device of this patent (No. 2,756,741) is not used to measure diastolic blood pressure;
The vacuum tube signal analysis circuit of the patent is large and requires a considerable amount of power to operate.

In the blood pressure measuring device disclosed in US Pat. No. 3,926,179, a Zolope is attached to the wrist near the radial artery. A voltage responsive transducer on the Proso outputs electrical blood pressure pulses that correspond to blood pressure pulses through the radial artery. The electrical blood pressure pulse is applied to an analog circuit that generates a systolic signal corresponding to the integrated voltage at the peak of the electrical blood pressure pulse and a systolic signal corresponding to the voltage at the low point of the electrical blood pressure pulse.

I wonder if this patented analog measuring device works?)
of electricity and is not suitable for use inside a watch.

It is therefore an object of the present invention to provide a relatively simple and low power electronic device carried in a wristwatch for analyzing measured blood pressure pulses in the radial artery of the wrist and thereby deriving values for systolic and diastolic blood pressure. Our goal is to provide the following.

The above and other objects of the invention will become apparent from the detailed description of the embodiments that follows and is considered with reference to the accompanying drawings.

In order to achieve the object of the invention and to overcome the problems of the prior art, a blood pressure and frequency measuring device according to the present invention includes a piezoelectric effect transducer mounted in the vicinity of the radial artery of the wrist. It is carried on the wristband. This transducer generates an electrical blood pressure pulse with an amplitude corresponding to the magnitude of the radial artery blood pressure pulse.

The maximum voltage of the electrical blood pressure pulse corresponds to the systolic blood pressure in the radius, and the minimum voltage corresponds to the diastolic blood pressure.

An analog-to-digital converter samples the voltage amplitude at multiple points on each electrical blood pressure pulse and generates a coded data word corresponding to the amplitude at that point. A comparator compares the coded data words and stores the data word with the highest value and the data word with the lowest value. These data words, ie, maximum and minimum data words, are displayed to indicate systolic and diastolic blood pressure.

A counter is employed to register the time interval between successive electroblood pressure pulses as a counting state, which corresponds to the number of clock pulses of a particular frequency generated over the electroblood pressure pulse interval. The counting state of the counter is applied as an address for recalling the 6 beat frequency data in a ROM (read only memory). The recalled data words define six stroke frequencies, and the six stroke frequencies produce blood pressure pulses with time intervals defined by the recalled count states. The six frequency data words retrieved from ROM are then displayed.

In the remainder of the detailed description, preferred embodiments of the invention will be described with reference to the accompanying drawings, throughout which equivalent devices are designated by the same numerals.

FIG. 1a shows a side view and a partial cross-section of a blood pressure and 6-stroke frequency measuring wristwatch according to the invention. Watch case 1 is electronic circuit 3
The clock case 1 also includes a power source, for example, a battery 5, which registers the time by employing the same circuit and generates an electrical signal corresponding to the blood pressure of the wearer and the frequency of 6 beats. This battery has electronic circuit 3 and related 7
Power is supplied to the segmented digital display device 4.

FIG. 1b shows the front side of a wristwatch digital display according to a preferred embodiment of the invention. The upper part of this display shows the time in hours and minutes, the middle part shows the systolic and diastolic blood pressure separated by diagonal marks, and the lower part shows the 6-degree pulse rate in units of extra pulses per minute. do. The display device of FIG. 1b is
It goes without saying that it can be constructed either by a conventional seven segment light emitting diode or by a liquid crystal display element. 1st a
As shown, the digital display, its associated electronic circuitry and battery are surrounded by a transparent crystal of known type.

During normal operation, the time measuring circuit of the clock of FIG. 1a operates in a conventional manner to output an electrical signal corresponding to the time of day. The watch case 1 is designed to save power from the battery 5.
Contains butane to selectively drive the time display for specific time periods. Of course, if the display device is a liquid crystal display element, the power required to operate the display device is very low, so that the time display is continuous.

As shown in FIG. 2, the blood pressure and frequency measurement circuitry and associated display elements of the watch are driven by inward pressure on hinged piezoelectric effect transducer support arms 9. The piezoelectric effect transducer 11 is mounted on the inwardly extending portion of the arm. This transducer support arm 9
is pressed inwardly, the piezoelectric effect transducer 11
is forced into contact with the skin of the wrist near the radial artery of the wrist. The inward movement of the support arm drives the microswitch 10, which provides power to the blood pressure and hexafrequency measurement circuitry through a lead 19 embedded or woven into the material of the watch strap 21.

Slide switch 13 is then engaged with outer notch 14 of arm 9, so that transducer 11 is anchored proximal to the radius. The sliding switch 13 is biased by a spring 17 so that this switch
4, thereby maintaining the support arm and transducer in an engaged and pressing relationship with the radial artery.

When the transducer 11 is disengaged from the radial artery by moving the support arm 9 outward from the wrist and engaging the switch 13 to the medial notch 15, the first
As shown in Figure a, the microswitch 10 is deactivated, thereby deactivating the blood pressure and frequency measurement circuits and associated display devices. Watch strap 21 in Figure 1a
Although this is a Kusakyo link band, it is clear that other types of bands may be used without departing from the spirit of the invention.

Piezoelectric transducer 11 suitably includes a piezoelectric crystal, which generates an electrical signal having a voltage amplitude corresponding to the magnitude of the applied pressure. Therefore, when the watch wearer's heart yA contracts, a strong blood pressure flow passes through the radial artery, which causes the artery to expand and pressure to act on the piezoelectric effect pressure transducer 11.On the piezoelectric effect transducer The pressure of the heart increases to a maximum point corresponding to maximum contraction of the heart, after which the pressure of the heart −7
As it expands, the pressure decreases and the wall of the radial artery also contracts.

It is clear that the high internal pressure in the arteries at the point of maximum contraction of the heart is the systolic blood pressure, and the low pressure in the arteries at the point of maximum diastole of the heart is the diastolic blood pressure. The piezoelectric effect transducer 11 thus registers an electrical blood pressure pulse corresponding to each contraction and subsequent expansion of the heart, the voltage at the peak of this electrical blood pressure pulse corresponding to the systolic blood pressure, and the lowest point of this pulse corresponding to the systolic blood pressure. Corresponds to diastolic blood pressure.

Although piezoelectric effect crystals are utilized as piezoelectric transducers in the preferred embodiment of the invention, it will be appreciated that other transducers known in the art may be employed without departing from the spirit of the invention. . However, a piezoelectric effect pressure quadrangle transducer is preferred for the present application because this transducer measures the direct effect of pressure applied within the radial artery, whereas other transducers, e.g. This is because it measures secondary effects such as stress applied to the skin surface due to

Although only a thin enough layer of tissue covers the radius of the average wrist, the force exerted by the radial artery in response to a blood pressure pulse is small enough to create a piezoelectric pressure quadrupole. The juicer 11 must be maintained in contact with the wrist with sufficient precise pressure so that the blood pressure pulses are properly registered.

No. 3,926,179 shows that blood pressure pulses were maximized by applying enough pressure to the radial artery to flatten the artery approximately halfway through it. In addition to maximizing blood pressure pulses from the arteries,
By partially flattening the artery, the circumferential tension within the elastic wall of the artery acts in the radial direction of the blood pressure, perpendicular to the pulse, so that the circumferential tension causes inaccuracies in the pulse pressure. Things will go away.

Since wrist dimensions vary from individual to individual and wrist skin thickness also varies, a device that adjusts the critical pressure of engagement between the piezoelectric effect transducer 11 and the radial artery according to the physical characteristics of the thin wrist of the wristwatch is provided. It is necessary to set Accordingly, as shown in FIG. 1a, a tension adjustment device 23 is arranged on the watch strap 21 to adjust the dimensions of the watch strap,
This regulates the pressure with which transducer 11 is applied to the radial artery when slide switch 13 engages outer notch 14 of support arm 9.

6 and 4 illustrate a tension adjustment device used to adjust the dimensions of watch strap 21 in a preferred embodiment of the invention. As shown in FIG. 6, the watch strap 21 includes an adjustment jacket 27 connected to a link. Adjustment jacket 27-1
End 29 is fixed to one end of link 25 and is unadjustable [2
The other end 31 of 7 is open and the associated terminal link 2
6 can be fixed to a cam follower 33, which is slidably supported within the adjustment jacket. The shaft end 35 of the cam follower 33 engages in a helical groove 34 formed in a cam 37 which is mounted within the jacket 27 for rotation about an axis 39. A tether 7° 41 is fixed to the end of the shaft 39 to hold the cam 37 in a rotatably supported position within the adjustment jacket 27.

As shown in FIG. 4, the outer surface of the cam 37 has a slot 43 which engages a screwdriver, coin, or other thin object that turns the cam 37. As the cam 37 rotates, the shaft end 35 of the cam follower 33 follows the groove 38 in the cam 37, which causes the cam follower 33 to move either inwardly or outwardly relative to the adjustment jacket 27, depending on the direction of rotation of the cam 37. It is clear that it moves smoothly.

Therefore, the retention pressure between the pressure transducer 11 and the wrist radial artery is set by adjusting the tension of the watch strap 21.

It goes without saying that the tension in the watch strap 21 must first be adjusted to correspond to the particular individual's wrist dimensions, and then the circuit of the present invention must be calibrated to display the appropriate pressure reading. . Of course, if an individual's wrist dimensions change, for example, the individual has lost substantial weight.
Or if it is increased, further adjustments must be made.

FIG. 5 is a block diagram of the electronic circuitry used to perform time registration, blood pressure and frequency measurement functions in accordance with the present invention. This time registration circuit corresponds to the circuit commonly used in commercially available digital watches. This time registration circuit includes a crystal controlled oscillator 45, and the 16 kHz signal generated by the oscillator is applied to a corresponding divider 47, and a pulse is generated every minute at the tap-off point of the frequency divider. . This minute pulse is the minute counter 49
, this minute counter defines 59 counting cycles, the overflow bit of the minute counter is added to the clock counter 51,
The latter is defined by 12 counting cycles, and this decoder is EO
It is connected to the D'i7 division decoder 55 and the 7 division display 57. Although specific circuit elements are described with respect to the time registration circuit of the present invention, it will be appreciated that other known elements or circuits may be employed without departing from the spirit of the invention.

According to the invention, the wearer's power is measured by applying the electrical input signal from the piezoelectric effect transducer 11 to an amplifier 59 with adjustable gain. amplifier 5
The gain of 9 is adjusted to produce a signal with a voltage swing within the detection range of peak detection circuit 61.

The peak detection circuit 61 is manufactured by Linear Integrated Circuits National.
ated 01rcuit National ) J
,page.

3-20 (February 1975). Peak detection circuit 61 generates a signal in response to a particular value of input voltage. Therefore, the peak detection circuit 61
The output signal of the peak detection circuit M61, which emits a signal when the output voltage of the amplifier 59 reaches a particular predetermined level, is applied to a Schmitt trigger circuit 63, which generates a corresponding counting pulse. It is therefore clear that the Schmitt trigger circuit 63 generates an electrical counting pulse for each electrical blood pressure pulse registered by the transducer 11. The peak detection circuit 61 ensures that the Schmitt trigger is not triggered by short noise pulses that cause the circuit 63 to momentarily rise to the trigger voltage level.

The trigger pulse of the Schmitt trigger circuit 63 is
5 through a delay circuit 64 and to the gate input terminal of an associated bistable latch circuit 69. The clock input terminal of the counter 65 is connected to the output of the counting clock signal generator 67, and this output is connected to the frequency divider 4.
7 or generated using a separate adjustable oscillator.

When the piezoelectric effect transducer 11 is initially moved into contact with the radial artery of the wrist, the microswitch 10 closes and applies power to the blood pressure and 6-frequency measurement circuit, causing the first voltage blood pressure pulse to cause a Schmidt pulse. A trigger pulse is generated in the trigger circuit, and this pulse is sent to the counter 6.
5 is passed through the bistable latch circuit 69, and then
Clear all of this counter. The cleared counter then starts counting pulses generated at the specific counting frequency F by the counting clock signal generator 6T. When the second pulse is generated by the Schmitt trigger circuit 63, the number of pulses counted between the first and second electrical blood pressure pulses is a bistable latch. stored in circuit 69, the counter starts counting pulses from clock signal generator 67 again. Thus, after each trigger pulse, the bistable latch circuit remembers the number of clock pulses counted between the current and previous trigger pulse.

This count data stored in bistable latch circuit 69 is applied to the address input terminal of program control ROM 71. This ROM thus stores the time interval between successive electrical blood pressure pulses, i.e.
Called at the response location.

Therefore, if the period T is expressed in seconds and the frequency F'z of the counting clock signal generator 67 is expressed in seconds per minute, then
The calling address in ROM7i is If'-T.

Since the contents of this ROM location at address FT must correspond to 6 pulses per second, this results in an electrical blood pressure pulse with period T. For this reason,
The contents of the ROM at the above address location correspond to 60/T. The accuracy of the 6-stroke frequency measurement is partially due to the ROM
71 usable storage capacity and counting clock signal generator 6
7 related frequencies.

As an example, if the possible range of 6 beats is from 60 pulses per minute to 120 pulses per minute, then the corresponding measured period T is in the range from 2 seconds to 5 seconds. If the desired accuracy of time measurement is 0.01 seconds, the counting clock signal generator 670 frequency must be adjusted to 100 pulses per second.

Therefore, for a frequency of 60 pulses per minute, 50 pulses are counted in the counter 65 between electrical blood pressure pulses. Therefore, the expected range of pulse states of counter 65 is from 50 to 200.

An encoded representation corresponding to 6 beats at 30 pulses per second is stored at address 200, and an encoded representation of the pulse rate of 6000/199 is stored at the next address 199. Generally, 6000/
A coded representation of the pulse rate, X, is stored. For a device with a counting frequency F, the counting state X of the counter 65
The RO corresponding to the pulse rate of (ml'/x)・60
Recall the stored encoded representation in M71.

It will be appreciated that the pulse rate measurement circuit of Figure WJ5 can be easily modified to allow counter 65 to accumulate counts during multiple blood pressure pulse intervals. for example,
An auxiliary counter is employed to operate the counter 65 so that the count pulses from the counting clock signal generator 67 are accumulated over a specified number of blood pressure pulses. of course,
The data in ROM 71 must then be adjusted to take into account the increased number of pulses due to the cumulative count being carried out over several pulses.

If the data in ROM 71 is a binary representation of the resting range of the pulse rate value, the binary BOD decoder and BOD
- A 7-segment decoder is required to display the calling pulse rate value on the 7-segment display 77. If a seven-part representation of pulse rate values is stored in ROMT1, this conversion stage is avoided. Therefore, if the 7-segment encoding is
If used for pulse rate values stored in
The output of the ROM is applied to a seven segment display through a suitable frequency divider. Alternatively, if the pulse rate value is program-controlled and placed in ROM as a BOD value, this avoids the BOD decoding stage and adds the BOD 7-section display 77 to the 7-section display 77. Only decoder 75 is required.

It will be appreciated that a program control ROM in the pulse rate measurement circuit of FIG. 5 is employed to ensure that pulse rate values are generated quickly and accurately. Also,
This ROM is free from errors due to expected movement-lift of the electronic components even over long periods of time.

It is clear that the above-described circuit elements of the pulse rate measuring circuit of FIG. 5 are intended to be included as functional elements of an integrated circuit chip. Accordingly, the physical dimensions of the circuit elements of Figure 5 are such that they can be designed by methods known in the art to fit within a relatively narrow area intended for use within the watch case of Figure 1a. reduced.

A portion of the circuit of FIG. 5 includes a piezoelectric effect transducer 11
The purpose is to derive measurements of systolic and diastolic blood pressure from the electrical traction pulses generated by the systolic and diastolic blood pressures. In operation, transducer 11 is depressed into contact with the radial artery, slide switch 13 engages outer notch 14, and micro-suite 10 closes to energize the blood pressure and pulse rate measurement circuits.

The voltage pulses from transducer 11 are then applied to an amplifier 73 with adjustable gain, which sends the amplified pulses to an analog-to-digital converter 75.

The voltage gain of amplifier 73 is adjusted to output pulses with voltage swings within the operating range of analog-to-digital converter 75. Converter 75 receives the analog voltage pulses of the amplifier and the dating signal from millisecond clock circuit 7T, which is taken from frequency divider 47 and generated by an independent oscillator.

A millisecond clock circuit 77 is regulated to generate thousands of pulses per second which are applied to the transducer resulting in a voltage sample at multiple points on each output pulse of amplifier 73. Each of the sample voltages is then converted to a binary code, which corresponds to the pressure in millimeters of mercury applied to transducer 11 to produce the sample voltage at the output of amplifier 73.

The binary code for the initial sample voltage from amplifier T3 is applied to a first input terminal of comparator 79 and stored in shift register 81 in response to a pulse from date control circuit 82 driven by microswitch 10. . The output of shift register 81 is applied to the second input terminal of comparator 79 and to binary BOD decoder 83. Decoder 83
The output of is applied to a corresponding BOD 7-segment decoder 85, and the output of the decoder 85 is then applied to a corresponding 7-segment display 87.

After the binary sign of the first sample voltage from converter 75 is applied to comparator 79 and then dated into shift register 81, the binary sign of the second sample voltage is applied to the comparator 790 input terminal. and if the magnitude of the binary sign of the second sampled voltage is greater than the binary sign of the first sampled voltage, comparator T9 transfers the magnitude of the binary sign of the second sampled voltage to shift register 81 by updating the previously stored sign.
It operates to store the sign of the second sample voltage that is larger within the second sample voltage.

The successive binary codes are applied to the comparator T9 and compared with the code stored in the shift register 81, and if the code in the shift register is smaller, by updating this smaller stored code, The larger sign is stored in the shift register. The shift register 81 is thus operated to store the maximum binary sign corresponding to the systolic blood pressure measured by the transducer 11, and this maximum sign is
7 will be displayed on the screen. It is clear that the maximum binary code stored in shift register 81 corresponds to the pressure in millimeters of mercury measured by piezoelectric effect transducer 11 at the peak of the blood pressure pulse, ie at the point of cardiac contraction.

Therefore, the seven segment display 87 displays the measured systolic pressure.

Cardiac systolic blood pressure is measured in a manner similar to the measurement of cardiac systolic blood pressure. In operation, the binary sign of the first sampled voltage is stored in shift register 91 and then applied to comparator 89. The binary codes of the successive sample voltages are determined by the comparator 89.
and compared with the contents of shift register 91.

2 added to the contents of shift register 91 and comparator 89
When the binary codes are compared, the comparator 89 operates to store the lesser compared code in the shift register 91 by updating the previously stored binary code. Therefore, over a period of time, shift register 91 accumulates a minimum binary code, which is the lowest binary code of the blood pressure pulse measured by transducer 11.
In other words, it corresponds to the pressure at the point of cardiac diastole expressed in millimeters of mercury. The output of the shift register 91 is binary.
The output of the decoder 93 is applied to a corresponding BOD 7-segment decoder 95 which in turn applies its corresponding output to the associated 7-segment display 9T. In this manner, the seven segment display 97 is operated to display the measured diastolic blood pressure.

It is clear that the above-described elements of the blood pressure measuring circuit of FIG.

It is also clear that the blood pressure measurement circuit of FIG. 5 must be calibrated for a particular individual in order to provide accurate readings of blood pressure. Therefore, the clock in Figure 1a is
When placed on the wrist of the intended user, the tension of the watch strap must then be adjusted to create the appropriate contact pressure between the transducer 11 and the radial artery.

The individual's blood pressure must then be measured by any accurate device known in the art, and amplifier 73 must then be adjusted to match the blood pressure readings on displays 81 and 97. Thereafter, recalibration is required from time to time to compensate for changes in watchband tension over time and changes in the physical conditions of the user's wrist.

The present invention may be carried out without departing from its spirit or essential characteristics. Therefore, the present invention should be considered as illustrative in all respects, and should not be considered as limiting; the scope of non-invention is limited to the scope of permitted invention) It is therefore intended that the claims be given the full meaning and range of equivalents thereof, and that they therefore be interpreted as non-inventive.

[Brief explanation of the drawing]

FIG. 1a is a side view including a partial cross section of the pulse rate counterfeiting and blood pressure measuring wristwatch according to the present invention; FIG. 1b is a full view of the wristwatch of FIG. 1a; and FIG. 2 is a transducer support for the wristwatch of FIG. 1a. FIG. 6 is a side view of the watch tension adjustment device shown in FIG. 1a, FIG. 4 is a bottom view of the tension adjustment device shown in FIG. 6, and FIG.
1a is a block diagram of the operating circuit of the wristwatch of FIG. 1a; FIG. 10; Micro switch 11 Nidoran decipherer 13: Sliding switch 21: Watch band 45: Crystal controlled oscillator 47: Frequency divider 49: Minute counter 51: Clock counter 53: BOD decoder 55 Near division decoder 57; 7 divisions Display 59: Amplifier 61: Beak detection circuit 63: Schmidt-Trial circuit 65: Pulse counter 67: Counting clock signal generator 69: Bistable latch circuit 71: ROM (read-only memory) 73: Amplifier 74: BOD 7-section decoder 75: Analog-to-digital converter 76; 7-section optical display device 77: Millisecond clock circuit 79: Comparator 81: Shift register 83: Binary BOD decoder 85: BOD 7-section decoder 87: 7 section display 89: Comparator 91: Shift register 93: Binary/BOD decoder 95: BOD/7 section decoder 97: 7 section display Agent Asamura Akira 4 peopleFIG, 5 Ndo design・Published by West Purge, Inc., Morgantown Green Bag Road (no street address)

Claims (1)

[Scope of Claims] (1) A blood pressure measuring device comprising: a transducer device that generates an electrical signal having an amplitude corresponding to the magnitude of the applied pressure; and a region of the human body from which the blood pressure pulse is detected. a suppression device that presses at least a portion of the transducer device in the vicinity;
The transducer device generates electrical blood pressure pulses corresponding to the detected blood pressure pulses, and each electrical blood pressure pulse has a maximum voltage through systole and a minimum voltage through diastole. an analog-to-digital conversion device that samples voltage amplitudes at multiple points on a blood pressure pulse and generates, for each sampled voltage, a coded data word that defines a blood pressure corresponding to the amplitude of the sampled voltage; a systolic comparator that stores coded data words that compare the coded data words and define the systolic blood pressure; and a diastolic comparator that stores the coded data words that compare the coded data words and define the diastolic blood pressure. , a display device for displaying a representation of the stored data word of the systolic phase comparison device and a representation of the stored data word of the diastole phase comparison device. (2. The blood pressure measuring device according to claim 1, wherein the transducer device includes a piezoelectric effect crystal. (3) The blood pressure measuring device according to claim 1, wherein the transducer device includes a piezoelectric effect crystal. In the blood pressure measuring device, the systolic comparator includes: a shift register device storing only one coded data word of the analog-to-digital converter at a particular moment in time; a storage device for storing a first coded data word in said shift register device; and comparing the coded data stored in said shift register device with the coded data word generated by said analog-to-digital conversion device. and if the encoded data word in the shift register device is smaller than the encoded data word of the analog-to-digital converter, then the encoded data word of the analog-to-digital converter is stored in the shift register device. A comparison device; (4) In the blood pressure measurement device according to claim 1, the diastole phase comparison device comprises: a shift register device for storing only one coded data word of a conversion device; a storage device for storing in the shift register device a first coded data word generated by the analog-to-digital conversion device; and the shift register. Compare the encoded data words stored in the device with the encoded data words generated by the analog-to-digital converter and if the encoded data words in the shift register device are the same as the encoded data words of the analog-to-digital converter. and a comparator for storing the encoded data word of the analog-to-digital converter in the shift register device if the encoded data word is larger than the encoded data word. (5) Claims A measuring device according to paragraph 1, in which the counting device measures the time intervals between successive electropressure pulses in order to generate coded addresses, each address measuring the magnitude of a certain number of associated measurement time intervals. said counting device and said constant number being at least 1; and a storage device having a stored data table of 6-degree numbers, such that each 6-degree number is called by an associated one of said coded addresses; a subsequent encoding by said counting device; said storage device in which said six pulse frequency codes are stored and each 6-degree frequency code defines a blood pressure pulse value resulting in a blood pressure pulse having a time interval represented by an associated one of said encoding addresses; a calling device that adds each encoded address to call said memory device for at least some time prior to the occurrence of the address;
A 6-stroke frequency display device for displaying a 6-stroke frequency, and the blood pressure measuring device is suitable for 6-stroke frequency measurement in addition to blood pressure measurement. (6) The blood pressure measuring device according to claim 5, wherein the counting device includes a trigger device that generates an electrical trigger pulse in response to a specific voltage level of each electrical blood pressure pulse, and a time interval between the trigger pulses. a timing device for registering a counting state defining a count, the timing device being responsive to a trigger pulse to clear and start counting at a particular frequency; a bistable latching device responsive to a trigger pulse to store a counting state in the cough latch device, the counting state in the cough latch device being applied to said storage device as an encoded address; The blood pressure measuring device characterized by: (7) The blood pressure measuring device according to claim 6, characterized in that the device includes a peak detector and a Schmitt trigger circuit, and the storage device is a read-only memory. The blood pressure measuring device, wherein the blood pressure measuring device is a blood pressure measuring device. (9) The blood pressure measuring device according to claim 5, wherein the suppression device includes a suppression device that presses a pressure-sensitive portion of the transducer device near the radial artery of the wrist. Blood pressure measuring device. αQ % The blood pressure measuring device according to claim 5, characterized in that it includes a time course registration device and a time display device. C1,) A 6-frequency and blood pressure measuring device comprising a transducer device that generates an electrical signal with an amplitude corresponding to the magnitude of the applied pressure and a transducer device near the area of the human body where the blood pressure pulse is detected. a suppression device for compressing at least a portion of the transducer device, the transducer device generating electrical blood pressure pulses corresponding to the detected blood pressure pulses, and each of the electrical blood pressure pulses having a maximum voltage through systole and a cardiac diastole; generating an encoded representation of pressure corresponding to the maximum voltage produced by the transducer device in response to the suppression device and the blood pressure pulse defining a minimum voltage throughout the blood pressure pulse, and defining the encoded representation as a systolic blood pressure; a display device for displaying; a display device for generating a coded representation of pressure corresponding to a minimum voltage produced by the transducer device in response to the blood pressure pulse and displaying the coded representation as a diastolic pressure; and a counting device for measuring the time intervals between successive electroblood pressure pulses and for generating encoded addresses, each address representing the magnitude of a fixed number of associated measuring time intervals, and said fixed number at least 1, and a storage device having a stored data table of '6 stroke frequency codes, each 6 stroke frequency code has an associated 1 of the encoded address.
a pre-B series storage device which is stored to be recalled by one and each six-degree frequency code defines a value of the 6-degree frequency which produces a blood pressure pulse having a time interval represented by an associated one of said encoded amares; a calling device that adds each coded address to call the storage device for at least some time before the next successive coded address is generated by the counting device; and a 6-stroke power display device that displays a 6-stroke power representation of a power code. a wrist watch for registering time and measuring frequency and blood pressure from blood pressure pulses in the radial artery of the wrist, the device generating an electrical signal having an amplitude corresponding to the magnitude of the applied pressure; a suppression device for compressing at least a portion of the transducer device in the vicinity of the radial artery, the transducer device generating electrical blood pressure pulses corresponding to detected blood pressure pulses, and each of the electrical blood pressure pulses being systolic. an analog-to-digital converter for generating voltage-amplified data words at multiple points on each electroblood pressure pulse; a systolic comparison device that stores coded data words that compare and define the systolic blood pressure; a diastolic comparison device that stores coded data words that compare the coded data and define the diastolic blood pressure; a blood pressure display device for displaying a representation of the stored data words of the systolic comparator and a representation of the stored data words of the diastolic comparator; and a blood pressure display device that measures the time interval between successive electrical blood pressure pulses and generates a coded address. a counting device in which each ares represents the magnitude of a fixed number of all associated measurement time intervals, and said fixed number is at least 1; and a storage device having a stored data table of six stroke frequency codes , each 6-stroke power code is stored to be called by an associated one of said encoding addresses, and each 6-stroke power symbol has a time interval represented by an associated one of said encoding addresses. said memory device defining a value of a value that produces a blood pressure pulse; and each encoded address for accessing said memory device for at least a period of time prior to generation of the next subsequent encoded data by said counting device. and a 6-stroke frequency display device for displaying a reference frequency representing the recalled 6-stroke frequency code in the storage device. a3. The wristwatch according to claim 12, characterized in that the suppression device includes an adjustable wristwatch. α4% In the wristwatch according to claim 12,
The suppression device includes, when the transducer device is engaged near the radial artery, the analog-to-digital conversion device, the systolic comparison device, the systolic comparison device, the blood pressure display device, and the counting device. The wristwatch characterized in that it includes a switch device for applying power to the storage device, the recall device, and the 6-beat frequency display device. 05. The wristwatch according to claim 12, wherein the systolic comparator converts one of the analog-to-digital converters at a particular instantaneous time.
a shift register device for storing only one coded data word; a storage device for storing in the shift register a first coded data word generated by the analog-to-digital conversion device; compare the encoded data words generated by the analog-to-digital converter with the encoded data words generated by the analog-to-digital converter, and if the encoded data words in the shift register device are the same as the encoded data words of the analog-to-digital converter; A comparator device for storing encoded data words of the analog-to-digital conversion device in the shift register device if the number is smaller. 6 o'clock In the wristwatch according to claim 12,
The relaxation comparison device comprises: a shift register device for storing only one encoded data word of the analog-to-digital converter at a particular instant; and a shift register device for storing only one coded data word of the analog-to-digital converter at a particular instant; a storage device for storing encoded data in said shift register device; a comparator for storing the encoded data word of the analog-to-digital converter in the shift register device if the encoded data word of the encoded data word of the analog-to-digital converter is larger than the encoded data word of the analog-to-digital converter; The above-mentioned wristwatch is characterized by: