CN101711122A

CN101711122A - Sphygmomanometry apparatus

Info

Publication number: CN101711122A
Application number: CN200880019810A
Authority: CN
Inventors: 相马孝博
Original assignee: Terumo Corp
Current assignee: Terumo Corp
Priority date: 2007-06-13
Filing date: 2008-05-22
Publication date: 2010-05-19
Anticipated expiration: 2028-05-22
Also published as: TWI400061B; KR101099235B1; TW200847993A; KR20100021515A; CN101711122B; WO2008152894A1

Abstract

A sphygmomanometry instrument for measuring a blood pressure by using a cuff having an ischemic air bag, a sub-air bag provided on the upstream portion of the ischemic air bag on its human body side, and a pulse wave detection air bag provided on the downstream portion. Firstly, the sub-air bag is pressurized so as to promote introduction of a predetermined volume of air, and thereafter, a valve is closed to form a closed space. Then, the ischemic air bag is pressurized, and thereafter, pulse waves are measured by the pulse wave detection air bag while depressurizing the ischemic air bag. The influence due to the pulse wave vibration on the upstream side of the cuff can be prevented from being exerted onto the pulse wave detection air bag located on the downstream side.

Description

Blood pressure measuring device

Technical field

The present invention relates to blood pressure measuring device, relate in particular to the technology of carrying out blood pressure measurement in the vibration measurement mode.Particularly relate to the technology of resistance blood of having used with the blood pressure measurement of hoop bag.

Background technology

Used resistance blood to be with the method for obtaining of the systolic blood pressure of the sphygmomanometry of hoop bag, it is more than the systolic blood pressure that the pressure of hoop bag was once being brought up to endarterial maximum pressure, thus after the blood flow that has stoped tremulous pulse, by pressure is descended, when vascular pressure is consistent with the pressure of hoop bag, blood flow is begun mobile phenomenon detect and try to achieve.

Under the situation of the sphygomanometer of vibration measurement mode, hoop bag pressure was once being risen reach the above high pressure of systolic blood pressure, when hoop bag pressure is descended, detect the vibration of the tremulous pulse that takes place based on the volume-variation of tremulous pulse, determine blood pressure by the amplitude variations of this vibration.

And the husband of rood section of the section mode of extensively popularizing (auscultation) is with the vibration measurement mode hoop bag pressure to be risen to more than the systolic blood pressure, once stoping after the blood flow, hoop bag pressure is descended, tip side in the downstream that becomes the hoop bag detects the korotkoff's sounds that the blood flow that was once stoping begins mobile moment generation again, the resistance blood of this moment is obtained as systolic blood pressure value (maximal blood pressure) with binding round the intrinsic pressure of bag, and the intrinsic pressure of the hoop bag when korotkoff's sounds is disappeared obtained as diastolic blood pressure value (minimal blood pressure).

Above-mentioned vibration measurement mode is to begin mobile phenomenon again for blood flow, the method for obtaining from change changing with the pressure that binds round bag pressure piling of taking place because of the arterial volume under the hoop bag.Thus, owing to need necessary being used to not detect the mike or the stethoscope of korotkoff's sounds in the husband of rood section of section mode, so following advantage is arranged: part lacks than the section's husband of rood section mode, and manufacturing cost also can reduce.

In addition, the sphygomanometer of the husband of rood section of section mode has following shortcoming: the noise that takes place during owing to blood pressure measurement (sound that nuzzles up of hoop bagging, hoop bag pipe) and air-conditioning equipment and people's voice etc. are from the vibration of outside, the frequency component of noise is near the frequency component of korotkoff's sounds, so the not anti-noise of sphygomanometer of the husband of rood section of section mode.

To this, the frequency component of the pressure oscillation of using in the vibration measurement mode is much lower than the frequency component of korotkoff's sounds, and the frequency noise that takes place during with blood pressure measurement differs widely.Thus, vibration measurement mode has the advantage of the influence that is difficult to be subjected to noise.In addition, for the detection sensitivity that makes korotkoff's sounds constant, stethoscope or be installed in mike on the hoop bag and the para-position of tremulous pulse is important, in contrast to this, the vibration measurement mode is a vibration detecting sensor owing to binding round bag integral body, thereby even the hoop bag has skew slightly, also can measure fully, the availability height is the method that is applicable to the automatic sphygmomanometer of domestic.

But, in the vibration measurement mode, have the relevant problem of detection of the systolic blood pressure (maximal blood pressure value) that causes with the perstriction characteristic of hoop bag.To bind round bag is that air bag is wound on for example upper arm of measuring point, during to this air bag pressurization, the power of compressing upper arm is the compressing power of the central part reflection hoop bag pressure of the width (length direction of upper arm) at air bag, but from central part when air bag end side (upper arm length direction) is offset, can not obtain reflecting the compressing power of hoop bag pressure, compressing power shows from the end direction of central part to air bag and reduces gradually, and becomes 0 compressing characteristic (edge effect of hoop bag) in the end.

By such compressing characteristic, hoop bag pressure is risen to more than the systolic blood pressure, and begin to make gradually hoop bag pressure to descend, in the moment that will measure systolic blood pressure from resistance blood state, during the high slightly state of hoop bag pressure ratio systolic blood pressure, blood flow only is prevented from the central part of hoop bag.Its result, blood flow and heartthrob are synchronous, take place to invade the phenomenon that the central part of hoop bag returns again from the upstream portion of hoop bag.Because this phenomenon, pulse is detected when high from hoop bag pressure ratio systolic blood pressure, and the hoop bag pressure ratio systolic blood of detection forces down, and existence can not correctly detect the problem of pulse.

For the problems referred to above in the detection that begins phenomenon again that solves this blood flow, in the past, adopted following countermeasure.The pressure that makes hoop bag is beaten in the cycle 1 when systolic blood pressure begins to descend, and the time that arterial pressure is higher than the pressure of hoop bag is elongated, and the volume-variation in hoop bag downstream down increases thus, thereby the amplitude of pulse becomes greatly.In addition, also according to the degree of blood stasis, when an intravascular pressure of comparing tremulous pulse tip position with the hoop bag becomes bigger than hoop bag pressure, take place to press reflex from tip, thereby according to this reflection, it is big that pulse sharply becomes.

And, decompression along with hoop bag pressure, it is big that the pulse amplitude further becomes, intrinsic pressure comparing with the hoop bag, it is elongated that the intravascular pressure at tip position becomes big time, and beat in the cycle 1, before blood vessel is closed, following phenomenon takes place: the blood vessel under systole hoop bag roughly becomes standard-sized sheet, and the amplitude of pulse is maximum.

In the vibration measurement method, the central part under the hoop bag and the blood vessel in downstream are in the state that is pressed off, have only than hoop bag central part down more to be in the state that carries out standard-sized sheet repeatedly and press off by the blood vessel of upstream side, thus the whole blood pipe volume integral body of the measurement of systolic blood pressure hoop bag constantly capacity of blood vessel variation down under being equivalent to bind round bag about 50%.According to this reason, adopted following method: with the hoop bag force value in moment of detected about 50% the pulse amplitude that becomes the maximum pulse amplitude as systolic blood pressure.

But this ratio is subjected to the influence of following fluctuation: fluctuate because of the winding method that binds round bag makes the blood vessel pushing force of binding round under the bag, thus the upstream portion that helps to bind round the pulse formation under the bag of generation, the volumetrical imbalance of downstream portion; The intensity of binding round bag because of reeling makes a hoop bag air capacity difference, the fluctuation of the relation between the pressure of the hoop bag of Fa Shenging and the dynamic flexibility (compliance) thus; The fluctuation of the rising of the intravascular pressure at the tip position relevant with the size of maximum pulse amplitude.In addition, the intravascular pressure of degree influence at the tip position of the blood stasis that causes because of the length of repetition time of blood pressure measurement rises.It is bigger that these influences depend on the part that thickness, elastic characteristic, the tip circulation of pressure value, the blood vessel of organism worsen, and becomes the reason that individual variation takes place.

For addressing these problems, two hoop bag modes have been proposed.In this pair hoop bag mode, be provided with discretely be used to oppress blood vessel resistance blood with air bag with hindering blood only detects pulse with the central part under the air bag pulse detection air bag.According to this pair hoop bag mode, can alleviate when in-problem above-mentioned systolic blood pressure is measured under the vibration measurement mode the influence that causes with the volume-variation of the upstream side under the air bag because of resistance blood, thereby can S/N become that systolic blood pressure sets the goal really, resistance blood volume-variation with the downstream under the air bag than detecting well to pulse.

Sphygmomanometry according to the vibration measurement mode, make hoop bag pressure rise to the pressure higher than systolic blood pressure, once pressing off the blood vessel of measuring point, make the decompression of hoop bag pressure more lentamente, and detection is measured blood pressure thus by the volume-variation of the tremulous pulse of a measuring point amplitude variations that take place and the eclipsed pulse of hoop bag pressure signal.The hoop bag that is used for blood pressure measurement is the strongest in the power of central part pushing blood vessel, and the power that pushes this blood vessel towards the two ends of hoop bag slowly reduces, and has this power and is roughly 0 hoop bag edge effect at hoop bag two ends.

According to this characteristic, the amplitude variations of this pulse during blood pressure measurement, compare when enough high synchronous with systolic blood pressure at hoop bag pressure with the heartbeat that leans on heart one side of measuring point, because blood flow arrives the phenomenon that upstream (the heart one side) end of hoop bag then returns, the amplitude variations of this pulse during blood pressure measurement is a constant.

In addition, along with the decompression of hoop bag, the blood flow from heart one side of measuring point becomes the state that is pushed back lentamente after the degree that the central part of hoop bag is invaded strengthens and invades.Then, along with the further decompression of hoop bag, in the central authorities of hoop bag, blood vessel is pressed off, but the intrusion of blood flow reaches near the hoop bag central part.Thereupon, the pulse amplitude with hoop bag pressure piling also shows the variation that becomes big lentamente.

Except that this phenomenon, along with the further decompression of hoop bag, when hoop bag pressure becomes and forces down than systolic blood, in the tip side of hoop bag (measuring point is to be the forearm side under the situation of upper arm) putting out of blood flow taken place.Increased the volume-variation amount of putting out in the tip side with the pulse amplitude of hoop bag pressure piling.

Along with the further decompression of hoop bag, owing to the increase of putting out to the tip side, it is big that the pulse amplitude becomes.In addition, along with further decompression, follow the increase of putting out to tip, being positioned at a vein than the forearm of the more close tip of hoop bag position is bound round bag and is pressed off, thereby the intravascular pressure of vein, tremulous pulse integral body rises, and the intravascular pressure that the tip side can take place in the cycle at a heartbeat became than the hoop bag big moment of pressure.

According to the rising of this intravascular pressure, the pressure reflection from tip position side takes place, according to this reflection, it is big that the pulse amplitude becomes gradually.Along with the further decompression of hoop bag, it is big that the capacity of blood vessel during systole becomes, but according to above-mentioned hoop bag local edge, the compressing power of the edge of hoop bag dies down, the therefore volume reducing that is pressed off at the relaxing period blood vessel, thereby pulse amplitude convergence peak value and begin gradually to reduce.Along with the further decompression of hoop bag, hoop bag pressure becomes diastolic blood pressure when following, and in the cycle, blood vessel is not pressed off at a heartbeat, and the pulse amplitude reduces gradually.Then,, bind round the whole dynamic flexibility of bag and become big,, a series of pulse amplitude variations that the pulse amplitude further reduces takes place according to the reduction of the volume-pressure conversion efficiency of binding round bag along with the further decompression of hoop bag.

From this a series of pulse amplitude variations prediction systolic blood pressure and diastolic blood pressure and what measure is the vibration measurement method.

In the measurement of systolic blood pressure, the detection of the phenomenon of putting out to hoop bag tip side becomes important, but hoop bag pressure is when systolic blood pressure is above, and at a hoop bag upstream side, blood flow flows into down and returns the generation that causes pulse from the hoop bag to the hoop bag.In addition because this pulsometer reveals the variation that becomes big gradually, and the lower primary school of stroke volume of side downstream, put out the volume-variation that causes change than the capacity of blood vessel of hoop bag upstream side little, so put out the detection difficult of phenomenon.

To the moment of putting out generation of this hoop bag tip side, the hoop bag volume-variation of blood vessel down is half state that opens and closes of pact of the capacity of blood vessel under the hoop bag.Therefore, owing to be the roughly whole moment that opens and closes of the capacity of blood vessel under the hoop bag, promptly, roughly 50% of the moment of pulse amplitude maximum, so adopt following method: from beginning decompression, the pulse amplitude that occurs and the hoop bag pressure of this moment as a pair of record that carries out, are become the maximum moment from the pulse amplitude and review record, and 50% o'clock the hoop bag pressure that will become the maximum pulse amplitude is determined as the systolic blood pressure value.

But the maximum pulse amplitude is subjected to the blood vessel elasticity of measuring point and the influence of reflecting from the pressure of binding round bag tip position.In addition, the reflection of this pressure is to be the pressing to rise and takes place of blood vessel of forethiga by hoop bag tip position, and this presses and rises a blood flow volume that is subjected to flowing into hoop bag tip position, the capacity of blood vessel of forethiga, the influence of blood vessel elasticity.The state that the blood of this forethiga is not returned heart and be full of is called blood stasis.This blood stasis is except the characteristic of blood vessel, when measuring under the many situations of the mobile blood flow volume of tip, for example, cause slow situation or the many situations of Pulse Rate of hoop bag decompression rate when measuring easily, in addition, when carrying out blood pressure measurement repeatedly, the blood flow of not vacating forearm returns the above measurement of required time of heart at interval the time, just causes this blood stasis easily.Thus, the peak swing of pulse is subjected to the blood vessel elasticity of the measured individual's measuring point, the easy degree that causes blood stasis, measurement influence at interval, thereby all exists 50% of maximum pulse amplitude not reach the problem of systole pressure.

To this, a kind of two hoop bag method (patent documentation 1) is proposed, this method is that putting out to hoop bag tip taken place when the hoop bag pressure ratio systolic blood pressure of the target that becomes the systolic blood pressure measurement hangs down slightly, for the S/N ratio detects the little variation of following this to put out well, except that resistance blood is used the hoop bag, also will be used for optionally detecting the volume-variation of the blood vessel of tip side, the little hoop bag that pulse detection is used is arranged on resistance blood and leans on the tip side slightly with the central authorities of hoop bag, and, this volume-variation is transmitted with the hoop bag to pulse detection with the hoop bag by resistance blood, become the fight pulse signal of upstream side of hoop bag of the obstacle that detects of tip lateral vein in order to stop, with binding round between the bag buffer unit is set with hoop bag and pulse detection at resistance blood, in addition, at resistance blood the sound equipment filter (for example being made of fluid stopper and volume baffle-box) that resistance blood is decayed with the pulse that binds round bag is set with hoop bag and pulse detection on the binding pipe arrangement between the hoop bag.

Patent documentation 1: TOHKEMY 2005-185295 communique

But in two hoop bag modes, in the detection moment of systolic blood pressure, intrusion resistance blood invades the tight next door of pulse detection with air bag with the blood flow of the upstream side under the air bag.The phenomenon of air bag is used in the vibration that exists this intrusion to cause to pulse detection by the organism localized delivery.In addition, because pulse detection is arranged on the below of resistance blood with air bag with air bag, so be delivered to the pulse detection that is contacted air bag with the vibration part volume-variation of the hoop bag upstream side air bag under, hoop bag based on the resistance blood that is detected with air bag by resistance blood, its result worsens the S/N ratio of the measurement of systolic blood pressure.

Therefore, following structure has also been proposed: be provided for improving pulse detection and be provided for the buffer unit of damping with air bag and resistance blood between with air bag from the transmission pulse of resistance blood usefulness air bag with the reserve setting of the compressing performance of air bag and in pulse detection, thereby hindered at blood vessel and not make the blood flow of invading from hoop bag upstream side when blood presses off with air bag near the pulse detection air bag, and, hindering blood is provided for the damping pulse with the upstream side under the air bag buffer unit.According to this motion, can improve the compressing power of pulse detection with air bag, but there are the following problems: be right after before the measurement constantly of systolic blood pressure, blood flow is from binding round the distance existence fluctuation with air bag of the upstream portion intrusion of bag and the position that stops and pulse detection, stop at hoop bag central part blood flow, but the blood flow of upstream side invades under near the situation of hoop bag central authorities, can detect vibration by pulse detection sensitively with air bag, the vibration to hoop bag downstream that detect causes correctly detecting pulse.In addition, owing to also have the limit on the damping characteristic of the buffer unit that is used, therefore can carry out the decay of the higher frequency component of pulse, but just can not decay fully at low component.Thus, existence can not be compared the situation that detects systolic blood pressure well by S/N.

In addition, to simplify two hoop bag methods is purpose, when employing uses a pressure transducer detection resistance blood to use the mode of the pressure of air bag and the pressure that pulse detection is used air bag, hoop bag pressure is that the capacity of blood vessel that hoop bag upstream side takes place under the above situation of systolic blood pressure changes, the pulse that causes because of this variation is hindered blood and is detected with air bag, via pipe arrangement, be transfused to the hoop bag and press test section, promptly overlap with the detection index of systolic blood pressure, cause the deterioration of the S/N ratio of systolic blood pressure detection to the pulse that causes of putting out in hoop bag downstream.

Therefore, according to two hoop bag methods, by at resistance blood with air bag and pulse detection with between the air bag, become the above volume baffle-box of jumbo 500cc of big obstacle when fluid stopper device and miniaturization are set, make the pulse decay of the hoop bag upstream that resistance blood detects with air bag.

In above-mentioned two hoop bag methods, when hoop bag pressure ratio systolic blood pressure is big, exist the capacity of blood vessel that causes because of blood flow to change.Owing to this variation exists, as mentioned above, enter pressure detecting portion in order to stop the upstream side pulse, use the sound equipment filter that the upstream side pulse is subtracted and decline, and the prevention of use buffer unit hinders the propagation that blood vibrates with the pulse between the air bag with air bag and pulse detection.But, in the sound equipment filter, because of resistance blood is used the problem that pressure reduction takes place along with the decompression of hoop bag between the air bag with air bag and pulse detection, there is the restriction of the size of the volume baffle-box that the miniaturization of restriction, the blood pressure measuring device of the size of fluid stopper causes, in buffer unit, because of the problem that resistance blood function reduces, vibration pulse characteristic is limited, can not fully get rid of the influence of upstream side pulse, have the situation that the measurement of systolic blood pressure is taken place obstruction.

Summary of the invention

For solving above-mentioned problem,, have according to blood pressure measuring device of the present invention: hoop bag main body, it comprises: the dismantled and assembled hoop bag parts that are arranged on freely on the blood pressure determination measuring point; Contacting with the blood pressure measurement position of a described hoop bag parts resistance blood air bag side, the whole blood pressure measurement of compressing position is laid in; The sub-air bag of described resistance blood with heart one side that contacts a blood vessel side, compressing blood pressure measurement position with the blood pressure measurement position of air bag is laid in; The pulse detection air bag of described resistance blood with the pulse in the downstream slightly of the central part that contacts a blood vessel side, that detect the blood pressure measurement position with the blood pressure measurement position of air bag is laid in; Be used for adding the mechanism of decompressor to what described hoop bag main body was pressurizeed and reduced pressure; Obtain binding round the hoop bag pressure detecting mechanism of bag pressure signal hoop bag pressure signal with the pressure variation of air bag from described pulse detection; Detecting with described hoop bag presses the eclipsed pulse of signal hoop bag pressure signal to come and obtain the pulse detection mechanism of pulse signal; Press signal hoop bag pressure signal and described pulse signal to determine the blood pressure testing agency of pressure value based on described hoop bag; Show the blood pressure indication mechanism of described pressure value, it is characterized in that also having: be connected described pulse detection with first pipe arrangement between air bag and the described hoop bag pressure detecting mechanism; Be connected described resistance blood with air bag and described add between the mechanism of decompressor and via described hoop bag pressure detecting mechanism and connected second pipe arrangement of fluid stopper device; In described sub-air bag and described adding between the mechanism of decompressor via connected the 3rd pipe arrangement of described open and close valve, when the needed pulse of blood pressure measurement detects in described pulse detection mechanism, making described open and close valve is closed condition, the a series of pulse amplitude variations that will take place by described pulse detection mechanism obtains as described pulse signal, can measure systolic blood pressure value and diastolic blood pressure value thus.

In addition, add the pressurization that the mechanism of decompressor begins described hoop bag main body,, close described open and close valve, finish up to blood pressure measurement if hoop bag pressure reaches the pressure of regulation by described.

In addition, begin described pressurization of binding round the bag main body,, finish up to blood pressure measurement if, close described open and close valve through the stipulated time by the described mechanism of decompressor that adds.

In addition, between the described open and close valve of described the 3rd pipe arrangement and described hoop bag main body, be provided with by pressure and make volume become big airbag.

In addition,, have according to blood pressure measuring device of the present invention: hoop bag main body, it comprises: the dismantled and assembled hoop bag parts that are arranged on freely on the blood pressure determination measuring point; Be comprised in the described hoop bag parts and the resistance blood air bag at compressing blood pressure measurement position; Sub-air bag, the described resistance blood compressing of air bag of the opposition side of a side that contacts with the blood pressure measurement position of the described resistance blood usefulness air bag that is laid in and heart one side at auxiliary blood pressure measurement position; Pulse detection air bag, the described resistance blood that is laid in be with contacting with the blood pressure measurement position of an air bag blood vessel downstream side, compressing blood pressure measurement position, and, detect the pulse that takes place in the downstream; Be used for a described hoop bag main body is added decompression and via the pipe arrangement and the connected mechanism of decompressor that adds of open and close valve; Change the hoop bag pressure detecting mechanism that obtain bind round bag pressure signal with air bag and described resistance blood with the pressure of air bag from described pulse detection, described pipe arrangement has: at described resistance blood with air bag and described adding between the mechanism of decompressor via connected first pipe arrangement of first open and close valve; In described sub-air bag and described adding between the mechanism of decompressor via connected second pipe arrangement of second open and close valve; The 3rd pipe arrangement that described pulse detection is connected via the 3rd open and close valve with air bag and described hoop bag pressure detecting mechanism, described first pipe arrangement that is connected with air bag with described resistance blood and with described the 3rd pipe arrangement that described pulse detection is connected with air bag between have the bypass flow path that constitutes by the first fluid stopper, this blood pressure measuring device also has: detect the pulse detection mechanism that obtains pulse signal with the eclipsed pulse of described hoop bag pressure signal; Determine the blood pressure determination means of pressure value based on described hoop bag pressure signal and described pulse signal; The indication mechanism that shows described pressure value, before described resistance blood is pressurizeed with air bag with air bag and described pulse detection, close described first open and close valve and described the 3rd open and close valve, open described second open and close valve and pressurize and reach after regulation presses up to described sub-air bag, close described second open and close valve, and adjust the air capacity of described sub-air bag, and, during measuring blood pressure, close described second open and close valve.

In addition, described second open and close valve is opened when blood pressure measurement finishes or before blood pressure measurement begins, and thus the air in the described sub-air bag is vented to the outside.

In addition, described first open and close valve, described second open and close valve, described the 3rd open and close valve are electromagnetic valves.

In addition, on described the 3rd pipe arrangement, be connected with watertight aircase.

In addition, blood pressure measuring device of the present invention has: the dismantled and assembled hoop bag parts that are arranged on freely on the blood pressure determination measuring point; Be comprised in the resistance blood air bag (resistance blood is with binding round bag) at described hoop bag parts and compressing blood pressure measurement position; Sub-air bag (son hoop bag), the described resistance blood that is laid in is used the compressing of air bag with the described resistance blood of heart one side at the opposition side of a side that contact with the blood pressure measurement position of air bag and auxiliary blood pressure measurement position; For described hoop bag main body is added decompression via the pipe arrangement and the connected mechanism of decompressor that adds of open and close valve; Change the hoop bag pressure detecting mechanism that obtains binding round bag pressure signal from described resistance blood with the pressure of air bag, described pipe arrangement has: at described resistance blood with air bag and described adding between the mechanism of decompressor via connected first pipe arrangement of first open and close valve; In described sub-air bag and described adding between the mechanism of decompressor via connected second pipe arrangement of second open and close valve; The 3rd pipe arrangement that described pulse detection is connected via the 3rd open and close valve with air bag and described hoop bag pressure detecting mechanism; Detect the pulse detection mechanism that obtains pulse signal with the eclipsed pulse of described hoop bag pressure signal; Determine the blood pressure determination means of pressure value based on described hoop bag pressure signal and described pulse signal; The indication mechanism that shows described pressure value, it is characterized in that, described resistance blood with before the air bag pressurization, is closed described first open and close valve and described second open and close valve, open described the 3rd open and close valve, pressurize after described sub-air bag reaches the regulation pressure, close described second open and close valve, and adjust the air capacity of described sub-air bag, and, during measuring blood pressure, close described second open and close valve.

Here, further feature of the present invention is used to implement best mode of the present invention and accompanying drawing is able to clearly by following.

According to the present invention, can make when high with fluctuating fully and enter the problem that resistance blood is decayed with the upstream side of air bag and the pulse signal that is pushed back even the problem when systolic blood pressure is measured in having improved two hoop bag methods of vibration measurement mode is bound round bag pressure ratio systolic blood pressure, or for the problem that the large-scale air volume baffle-box of the miniaturization that hinders device need be set with air bag side by side with pulse detection, by sub-air bag being arranged on the upstream side of resistance blood with air bag, by reducing to hinder blood alleviates the compressing power that causes with the tension force of air bag raw material because of resistance blood with the swell increment of the end of air bag decline, and reduce the edge effect of hoop bag, thereby resistance blood is improved with the perstriction power of air bag upstream portion.By alleviating of this hoop bag edge effect, utilize two hoop bag methods, dysgenic hoop bag pressure ratio systolic blood pressure is taken place when high in the measurement of systolic blood pressure, can surmount in the countermeasure that reduces for the blood flow that makes intrusion hoop bag upstream side, be provided with pulse detection and use the limit of the effect of backup unit with the raising of the resistance blood effect of air bag, and, the resistance blood that obstruction takes place because of this blood flow with the transfer of vibration of air bag to pulse detection usefulness air bag, the limit of the frequency damping of buffer unit, thus the influence of individual variation can be reduced to the systolic blood pressure certainty of measurement, comprise the influence at interior metering system such as hoop bag winding method.

In addition, in order not entered pulse detection portion by pipe arrangement by the pulse of the hoop bag upstream portion of this sub-air bag detection, carried out following work: to pulse detection portion open and close valve is set midway from sub-air bag at pipe arrangement, when blood pressure measurement, close this open and close valve, thereby stop the pulse vibration of the unnecessary hoop bag upstream portion that sub-air bag detects to be passed to the phenomenon of pulse detection portion via pipe arrangement.By this work, necessary high capacity baffle-box can be set in two hoop bag FAXIA.

In addition, when the air injection rate of sub-air bag is too much, resistance blood is died down with the resistance Resina Draconis of air bag, in addition, when very few, the edge effect of hoop bag suppresses effect and is lowered, therefore for air capacity by moulding pressure siding stopping air bag, from pressurization, if pressure reaches setting, perhaps, reach certain stipulated time, close the pipe arrangement of sub-air bag by open and close valve, the air capacity that makes sub-air bag is an ormal weight, by this work, can not make air too much enter resistance blood that sub-air bag causes takes place with the upstream side perstriction obstacle of air bag, in addition, can not make resistance blood that the air capacity deficiency that charges into to sub-air bag causes not enough generation of perstriction, thereby can more effectively realize binding round alleviating of bag edge effect with air bag.

In addition, pipe arrangement between sub-air bag and open and close valve connects the airbag that makes the big balloon-like of volume change by pressure, when thus can be big by sub-air bag attenuation by absorption hoop bag pressure ratio systolic blood pressure, blood flow enters the vibration that hoop bag upstream portion takes place, the volume vibration force of the hoop bag upstream side that detects by sub-air bag is passed to resistance blood air bag, and, this resistance blood is passed to the pulse detection air bag with the vibration of air bag, finally can relax the phenomenon that is transfused to pulse detection portion.

In addition, for in two hoop bag methods, also exist, when hoop bag pressure ratio systolic blood pressure is high, with contraction, the diastole of the heart pulse that the blood flow of a hoop bag upstream portion (resistivity blood with the central part of the tremulous pulse direct of travel of the measurement section of air bag more by heart one side) takes place of synchronously coming in and going out, use the end, upstream of air bag at resistance blood by sub-air bag, strengthen resistance blood with the pushing of air bag from the outside, from can be with the pressure compression blood vessel identical with the central part of air bag, near resistance blood is used the edge of air bag, thereby can alleviate the edge effect of upstream side hoop bag.

Other features of the present invention and advantage are with reference to accompanying drawing and by the following description and clear and definite.In addition, in the accompanying drawings, the identical or same identical Reference numeral of structure mark.

Description of drawings

Accompanying drawing is included in the description, constitutes its part, the expression embodiments of the present invention, and be used to its description principle of the present invention is described.

Fig. 1 is the block diagram of the blood pressure measuring device of expression one embodiment of the present invention.

Fig. 2 is that expression will bind round the cutaway view that bag main body 1 is installed in the situation behind the upper arm.

Fig. 3 is the job description flow chart of the hoop bag pressurization program of blood pressure measuring device.

Fig. 4 is the job description flow chart of the hoop bag decompression program of blood pressure measuring device.

Fig. 5 A is the stereoscopic figure of damping unit 18, and Fig. 5 B is the three-dimensional exploded view of damping unit 18, and Fig. 5 C is the piping diagram of damping unit 18.

Fig. 6 is the block diagram of the blood pressure measuring device of expression other embodiments of the present invention.

Fig. 7 is the flow chart of blood pressure measurement program.

Fig. 8 is the job description flow chart of the blood pressure measuring device of Fig. 6.

The explanation of Reference numeral

1 hoop bag main body

2 hoop bag parts

8 resistance blood air bags

7 sub-air bags

5 pulse detection air bags

11 first pipe arrangements

12 second pipe arrangements

13 the 3rd pipe arrangements

14 fluid stoppers

16 open and close valves

18 damping units

The 22 rapid escape valves constant speed air bleeding valve of holding concurrently

23 pumps (adding the mechanism of decompressor)

31 pressure transducers (hoop bag pressure detecting mechanism)

115-2 first open and close valve

116 second open and close valves

115-1 the 3rd open and close valve

The specific embodiment

Below, with reference to the description of drawings embodiments of the present invention, but the present invention obviously is not limited to embodiment.Fig. 1 is the block diagram of the blood pressure measuring device of expression one embodiment of the present invention.

In this figure, hoop bag main body 1 has at the blood pressure measurement position that comprises upper arm parts the fabric hoop bag parts 2 that are provided with in mode that can dismounting, the end of the measuring point contact side of this hoop bag parts 2 be provided with dashed lines illustrated outside (hook) face fastener 3, in addition, be provided with position and area and resistance blood identical interior (ring-like) face fastener 4 of air bag at the face opposite with the measuring point contact side.As shown in the figure, should bind round bag parts 2 and be wound on upper arm, and each face fastener of fastening, thus, can dismounting hoop bag main body 1.Here, the face fastener is an example only, also can be parts in addition, also can be in addition in the mode that is pre-formed tubular and upper arm is inserted wherein the structure of binding round the bag main body to be set.

In the inside of these hoop bag parts 2, the illustrated resistance blood of dotted line that lays the integral body that is used to oppress the blood pressure measurement position is with air bag 8.In addition, lay the narrowly formed illustrated sub-air bag 7 of dotted line of width at this resistance blood with a side that contacts with the blood pressure measurement position of air bag 8 for the heart H side of oppressing the blood pressure measurement position.Be provided for first buffer unit 9 of the vibration of attenuator air bag 7 between with air bag 8 at sub-air bag 7 and resistance blood.

In addition, hoop bag main body 1 constitutes the illustrated pulse detection of dotted line that is laid with the pulse that is used to detect the downstream with air bag 5, and this pulse detection is laid in this resistance blood with a side that contacts with the blood pressure measurement position of air bag 8 and the blood vessel downstream of oppressing the blood pressure measurement position with air bag 5.

Setting adds the mechanism of decompressor for this hoop bag main body 1 is pressurizeed and reduced pressure, be connected with pipe arrangement 15 by second pipe arrangement 12 between with the resistance blood of hoop bag main body 1 in that to add the mechanism of decompressor be pump 23 with air bag 8, in addition, the pulse detection of pump 23 and hoop bag main body 1 is with being connected with fluid stopper 14 by first pipe arrangement 11 between the air bag 5, in addition, be connected with open and close valve 16 by the 3rd pipe arrangement 13 between the sub-air bag 7 of pump 23 and hoop bag main body 1.In addition, from pulse detection with the pressure of air bag 5 to change the hoop bag pressure detecting mechanism that obtains binding round bag pressure signal be pressure transducer 31 with pulse detection with being connected by first pipe arrangement 11 between the air bag 5.In addition, on sub-air bag 7, be connected with the 3rd pipe arrangement 13.

Each first pipe arrangement 11, second pipe arrangement 12, the 3rd pipe arrangement 13 are made of soft pipe, and are provided with in mode that can dismounting from main body 30 by adapter 10.

In addition, preferably be connected with damping unit 18 (dotted line diagram) on the 3rd pipe arrangement 13, this damping unit 18 is to become the smoothing of carrying out pressure in big at volume and pressure with being directly proportional.

On cross branching portion 20, be connected with pump 23 and the rapid escape valve constant speed air bleeding valve 22 of holding concurrently.The rapid escape valve constant speed air bleeding valve 22 of holding concurrently is connected with control part 48, open and close valve 16 is connected with control part 46, according to the instruction of central control part 35, and the hold concurrently aperture area of constant speed air bleeding valve 22 control electromagnetic valves of rapid escape valve, in addition, 16 pairs of electromagnetic opening and closing valves of open and close valve carry out switching work.

In addition, pump 23 is along with supplying with and be driven from the electric power of the pump drive division 49 that is connected with motor M, extraneous air is imported in the pump and pressurizes from peristome 23a, forced air is sent into pipe arrangement 15 and the 3rd 13a of pipe arrangement portion, can carry out the pressurization of each air bag thus by cross branching portion 20.

The rapid escape valve constant speed air bleeding valve 22 of holding concurrently is to utilize the electromagnetism intensity of force to make the structure of variable open area for the decompression rate of realizing per second 2～4mmHg, by obtaining driving signal from the PWM of control part 48, can set decompression rate arbitrarily.

Secondly, Fig. 2 is that expression will be bound round the cutaway view that bag main body 1 is installed in upper arm situation afterwards.In this figure, about structure or the identical Reference numeral of components marking that has illustrated, and omit explanation, hoop bag main body 1 is installed to after the upper arm parts, hinders the blood vessel integral body of blood with air bag 8 compressing blood pressure measurement positions, and sub-air bag 7 is positioned at heart H side.In addition, pulse detection is positioned on the tremulous pulse in hoop bag tip side with air bag 5.

And, with between air bag 8 and the sub-air bag 7, be provided with first buffer unit 9 that transfer of vibration prevents function that has of foaming polyurethane resin etc. at resistance blood.And, be provided with same second buffer unit 6 with air bag 8 and pulse detection between with air bag 5 at resistance blood.In addition, each buffer unit also can be to form air layer to prevent to arrive each air bag because of resistance blood with the transfer of vibration that the heartbeat of air bag takes place between resistance blood is with air bag 8 and each air bag.

Especially, when making each air bag inflation, if can keep the state that air layer is not damaged, it is better near the damping characteristic of the vibration of heartbeat vibration number to be absorbed.Promptly, when resistance blood uses the inner pressure ratio systolic blood pressure of air bag 8 lower slightly, change because of the capacity of blood vessel of upstream side the vibration that takes place, from sub-air bag 7 to resistance blood with air bag 8 or from resistance blood with air bag 8 when pulse detection is alleviated with the transmission of air bag 5, can improve S/N ratio in the detection of the pulse of the blood vessel downstream generation of binding round bag.In addition, also can be the structure that each buffer unit is not set.

Refer again to Fig. 1,, change with the pressure of air bag 5 with the resistance blood pressure force signal of air bag 8 and pulse detection from the resistance blood that the pulse composition has been decayed that to be imported into a hoop bag pressure detecting mechanism be pressure transducer 31 by fluid stopper 14.On this pressure transducer 31, be connected with the pressure measxurement portion 32 that converts analog electrical signal to, and, in pressure measxurement portion 32, be connected with A/D converter 33, digital signal is exported to central control part 35 as hoop bag pressure signal.

This central authorities' control part 35 comprises: the RAM38 that carries out the read-write etc. of measurement data and analysis result; From hoop bag pressure signal, detect the pulse handling part 39 of eclipsed pulse signal; The hoop bag pressure-controlled portion 40 that the pressure of hoop bag (resistance blood with air bag, pulse detection with air bag, sub-air bag) is pressurizeed, reduces pressure; From the blood pressure measurement portion 41 that the pulse variation and the resistance blood hoop bag pressure signal of detection are determined blood pressure; The pressure value of measuring is presented at the display control unit 37a of blood pressure indication mechanism 37; Storage is as the ROM36 of the various control sequences that can read by central control part 35.In addition, RAM38 also has the function as the working region of program processed in the central control part 35.

In addition, the blood pressure indication mechanism that on central control part 35, is connected with the display of blood pressure value be liquid crystal display part 37 and carry out above-mentioned each drive each drive division of control.

In addition, come the electric power of the power supply unit 43 of self-contained aneroid battery to supply with formation like this:, to carry out each required work of blood pressure measurement thereby feed electrical power to each one by central control part 35 by the operation of switch 42.

In the blood pressure measuring device that as above constitutes, central control part 35 is read the various measurement control sequences that are stored in advance among the ROM36, carries out work according to the flow chart of following blood pressure measurement program.

Fig. 3 is the job description flow chart of hoop bag pressurization program.At first, hoop bag main body 1 is installed in upper arm parts as illustrated in fig. 2.

Then, not shown measurement begins switch 42 when being pressed, the hold concurrently aperture area of constant speed air bleeding valve 22 of rapid escape valve is a standard-sized sheet, in addition, open open and close valve 16, carry out the aerofluxus of each air bag, at step S 1, when the aerofluxus of the residual air in each air bag finishes, carry out 0 of pressure transducer 31 and set (initialization).

Then, at step S2, keep the state that open and close valve 16 is opened.On the other hand, rapid escape valve is held concurrently constant speed air bleeding valve 22 by full cut-off.More than, to binding round the ready of bag pressurization of (resistance blood air bag, pulse detection air bag, sub-air bag),, carry out energising to pump 23 at step S3.

Then, whether at step S4, checking becomes authorized pressure (do not become the obstacle of resistance blood, make sub-air bag 7 expansible pressure with can reducing the edge effect of hoop bag), if become authorized pressure, at step S5, close open and close valve 16.

At step S3, carry out the Continuous Drive of pump 23, so that resistance blood sets value with the pressurization that the pressure of air bag 8 becomes than the high 20～30mmHg of systolic blood pressure of anticipation.

At step S6, judge whether hoop bag pressure becomes the pressurization setting value, when becoming the pressurization setting value, enters step S7, after pump drives and stops, entering hoop bag decompression program.

In the hoop bag decompression program of Fig. 4, when entering step S20, the constant speed aerofluxus is begun by the rapid escape valve constant speed air bleeding valve 22 of holding concurrently.Use signal by hoop bag pressure-controlled portion 40 from hoop bag pressure detecting portion, change rapid escape valve hold concurrently constant speed air bleeding valve 22 aperture area and begin the constant speed decompression so that decompression rate becomes 2～3mmHg/ second.

Then, at step S21, obtain hoop bag pressure, the detection of beginning pulse among the step S22 below again from hoop bag pressure detecting portion.Secondly, enter step S23, be one group by the pulse signal of pulse handling part 39 detections with hoop bag pressure and pulse amplitude and be stored in RAM38.In addition, at step S24,, then detect the amplitude maximum of so far detected pulse if detect the phenomenon that the pulse amplitude reduces by heartbeat.About pulse by the hoop bag pressure detecting lower than the hoop bag pressure that detects the pulse suitable with the maximum pulse amplitude, carry out amplitude and become below the pulse peak swing value that obtains with requirement ratio on duty promptly for example pulse detection below 60% of the maximum pulse amplitude, the hoop bag pressure of this moment is determined as diastolic blood pressure (minimal blood pressure value).

Afterwards, at step S25, making the hold concurrently aperture area of constant speed air bleeding valve 22 of rapid escape valve is standard-sized sheet, and, by opening open and close valve 16, make the hoop bag be atmospheric pressure.Then, at step S26, for the pulse amplitude that is stored in RAM36 in chronological order and hoop bag press right, from the peaked pulse that detects the pulse amplitude, detect on the contrary in chronological order, for example detect the point that sharply diminishes at the above pulse amplitude of setting, hoop bag force value is at this moment detected and be stored in RAM36 as systolic blood pressure.

Then, will be presented at display part in the systolic blood pressure value and the diastolic blood pressure value of step S27 storage, and finish a series of blood pressure measurement work.

At last, Fig. 5 A is the stereoscopic figure of damping unit 18, and Fig. 5 B is a three-dimensional exploded view, and Fig. 5 C is a piping diagram.

As shown in the figure, damping unit 18 is made of the integrated main body 18a of pipe joint 18d, 18c, elastica 18b and the vibrating part 18f that will be connected with the 3rd pipe arrangement 13.Particularly, elastica 18b uses the raw material of natural rubber, silicone rubber etc. to become thin wall shape as illustrated calyptra.On this elastica 18b, form blade of a sword portion, this blade of a sword portion is fixed by screw thread be clamped between main body 18a and the vibrating part 18f.According to above damping unit 18, volume becomes greatly with pressure with being directly proportional, and can carry out the smoothing of pressure, thereby can more stably carry out the decompression that adds of sub-air bag 7.

Secondly, Fig. 6 is the block diagram of blood pressure measuring device of expression other embodiments of the present invention and the figure of expression air pipe arrangement.In this figure, hoop bag main body 1 has to be arranged in mode that can dismounting and comprises upper arm parts, forethiga, huckle, the lower limb portion fabric hoop bag parts 2 at interior blood pressure measurement position, the end of the measuring point contact side of hoop bag parts 2 be provided with dotted line illustrated outside (hook) face fastener 3, in addition, (ring-like) face fastener 4 in the opposition side of the side that contacts with the measuring point of end is provided with.Should bind round bag parts 2 and be wound on the measuring point as shown in figure, and make each face fastener become the fastening state, hoop bag main body 1 was installed thus, and in addition, can dismantle by removing the fastening state.

The size of this fastener is, face fastener 4 resistivity blood are long slightly with air bag (resistance blood with hoop bag) 8, and face fastener 4 is wound on the arm Zhou Changdu that can measure when being peaked arm, and face fastener 3 is configured to the fully length of coverage rate fastener 4.Here, the face fastener is an example only, also can be parts in addition, in addition, also can be to be pre-formed into tubular and with arm insertion mode wherein.

Lay the illustrated resistance blood of the dotted line air bag 8 that (interior bag) is useful on the integral body at compressing blood pressure measurement position in the inside of these hoop bag parts 2.This resistance blood is that pump 23, electromagnetic damping aperture control valve 22 be connected by first pipe arrangement 12 that is made of soft pipe with adding the mechanism of decompressor via the first open and close valve 15-2 with air bag 8.Extraneous air is imported and pressurizes from the peristome 23a of pump 23, and the aperture in the damping aperture by control electromagnetic damping aperture control valve 22 is carried out the aerofluxus of air from peristome 22, can reduce pressure with constant decompression rate.

In addition, at resistance blood with the side that contact with the blood pressure measurement position of air bag 8, the arterial vascular hoop bag downstream at compressing blood pressure measurement position, the pulse detection that is used for pulse detection is laid across reserve parts 6 ground with air bag (pulse detection with bind round bag) 5.Be connected with three pipe arrangement 11 that by soft pipe constitute via the 3rd open and close valve 115-1 in this pulse detection on air bag 5.Between the first pipe arrangement 12a and the 3rd pipe arrangement 11a, be connected with the fluid stopper 14 that constitutes by tubule.In addition, at the upstream side (heart one side) of resistance blood with air bag 8, for the hoop bag edge effect of heart one side that alleviates the blood pressure measurement position, the illustrated sub-air bag of the dotted line that width forms narrowlyer (son hoop bag) the 7th clips the be laid in opposition side of the side that contacts with the measuring point of reserve parts 9 ground between resistance blood is with air bag 8 and sub-air bag 7.On this sub-air bag 7, be connected with second pipe arrangement 13 that constitutes by soft pipe, via second open and close valve 116, the second pipe arrangement 13a that open and close the pipe arrangement path, the first pipe arrangement 12a and add the mechanism of decompressor and be connected as shown in figure.

First pipe arrangement

12,12a,

second pipe arrangement

13,13a, the

3rd pipe arrangement

11,11a are being provided with by the mode of adapter 10 from main body 30 dismounting.In diagram, with can the mode of dismounting constitutes by this adapter 10, but also can the one pipe arrangement.In addition, fluid stopper 14 has the function that limit air is come in and gone out with air bag 5 to pulse detection.In addition, in order to access the pulse signal that resistance blood is used air bag 5 with the hoop bag force value signal and the pulse detection of air bag 8, resistance blood passes through

first pipe arrangement

12,12a, fluid stopper 14, the 3rd pipe arrangement 11a with air bag 8, mechanism is that pressure transducer 31 is connected with hoop bag pressure detecting, on the other hand, pulse detection is that pressure transducer 31 be connected by the

3rd pipe arrangement

11,11a with hoop bag pressure detecting mechanism with air bag 5.

Be connected with on this pressure transducer 31 and make the signal that is converted into the signal of telecommunication amplify the also pressure measxurement portion 32 of restricted band.And, be connected with the A/D converter 33 that analog electrical signal is converted to digital signal, and digital signal is exported to central control part 35.

This central authorities' control part 35 comprises as shown in the figure: the RAM36 that writes and read that can carry out data; Comprise the pulse handling part 38 that is used to obtain and bind round the pulse detection mechanism of bag eclipsed pulse signal of pressure signal; Comprise the described hoop bag pressure treatment portion 39 that adds the mechanism of decompressor; Comprise the blood pressure measurement portion 40 that determines the blood pressure testing agency of pressure value according to the force value and the pulse signal variation of resistance blood air bag; The display control unit 41 that shows measurement result.In addition, the control sequence of central control part 35 is built among the ROM.And be connected with on central control part 35: the blood pressure indication mechanism of display of blood pressure value is a display part 37; Carry out the pump drive division 48 of the driving control of said pump 23; The valve control part 46 of open and close controlling second open and close valve 16; The electromagnetic damping aperture control valve control part 48 of control electromagnetic damping aperture control valve 22; The valve control part 47 of open and close controlling first open and close valve 15-2 and the 3rd open and close valve 15-1; The power supply unit 43 and the on and off switch 42 that comprise aneroid battery.

In said structure, when on and off switch 42 is opened, carry out the content that the program that is stored in above-mentioned ROM was supplied with and read to electric power from power supply unit 43, carry out needed each control of blood pressure measurement.

According to the hoop bag main body 1 that as above constitutes, can use in various blood pressure measuring devices.For example, the control sequence that blood pressure measuring device shown in Figure 6 will be stored is in advance read by central control unit, thereby works like that according to the flow chart of the blood pressure measurement program of Fig. 7.

At first, by turning on the power switch 42, blood pressure measuring device is started.At step ST1, the first open and close valve 115-2, second open and close valve 116, the 3rd open and close valve 115-1 become open mode.In addition, at step ST2, become open mode by making electromagnetic damping aperture control valve 22, residual voltage, a residual air in the full hoop bag are discharged from, and do not have 0 setting (step ST3) of the state pressure transducer 31 down of residual voltage.Then,, close first open and close valve, the 3rd open and close valve at step ST4, and, make electromagnetic damping hole control valve 22 become full-shut position.

Step ST5 below, primer pump 23.Then, at step ST6, judge that whether sub-air bag becomes resistance blood is authorized pressure with the suitable pressure that the hoop bag edge effect of air bag 8 is alleviated.Be judged as when becoming authorized pressure, enter step ST7, close second open and close valve.Then, at step ST8, be open mode by making first open and close valve and second open and close valve, begin to hinder blood is used air bag 5 with air bag 8 and pulse detection pressurization.

In addition, at step ST9,, be blown into air with air bag 8 and pulse detection with air bag 5 by 16 pairs of resistances of the fluid stopper blood that suppresses air mass flow up to becoming than the pressure about the high about 40mmHg of systolic blood pressure of predefined anticipation.At step ST9, be detected if set to press, at step ST10, cut off energising to force (forcing) pump 23.At step ST11, begin decompression with the decompression rate of 2～3mmHg/ second by electromagnetic damping aperture control valve 22.Then, at step ST12, obtain hoop bag pressure from hoop bag pressure detecting portion.At step ST13, begin to detect pulse.At step ST14, with the amplitude of detected pulse and the hoop bag pressure when detected as a pair of RAM36 that is stored in chronological order.At step ST15, detect after the maximum of pulse amplitude, for example, detect the point that the above amplitude of setting sharply diminishes, hoop bag force value is at this moment detected as diastolic blood pressure, and be stored in RAM36.At step ST16, make the electromagnetic damping aperture control valve and the second open and close valve standard-sized sheet, and aerofluxus is till atmospheric pressure.In addition, at step ST17, for being stored in the pulse amplitude in the RAM36 in chronological order and binding round the right of bag force value, retrieve period from measurement beginning the earliest, detection pulse amplitude is the big point of stepped rapid change more than 50%, and hoop bag force value at this moment is stored in RAM36 as systolic blood pressure.At step ST18, the systolic blood pressure value and the diastolic blood pressure value of storing is presented at display part 37, finish a series of blood pressure measurement work.

In the above control method, the preferred embodiment of blood pressure measuring device of the present invention has been described, but has the invention is not restricted to this.

More than, the pulse amplitude that takes place in the time of can making hoop bag pressure ratio systolic blood pressure high reduces, can make S/N and detect the pulse of putting out that hoop bag pressure becomes the hoop bag tip side that takes place when forcing down than systolic blood, thereby the certainty of measurement of systolic blood pressure is significantly improved than improving ground.In addition, the edge effect of hoop bag is subjected to the very big influence of the air capacity of sub-air bag, and perstriction is crossed strong and caused putting out pulse and die down but the antithetical phrase air bag pressurizes when excessive, and in addition, systolic blood pressure is measured during grow terrifically must be lower.But, can not fully alleviate the edge effect of hoop bag on the contrary during understressed.Therefore, open and close controlling first open and close valve, the 3rd open and close valve, second open and close valve can carry out the pressure control of the best of sub-air bag thus as described above, and its result can be with the pressurization value antithetical phrase air bag pressurization of the best.Thus, can reduce to become the hoop bag upstream side pulse of the obstacle that the systolic blood pressure of hoop bag pressure ratio systolic blood pressure when high measure by two hoop bag methods.In addition,, use the electromagnetism bypass valve that pipe arrangement is constituted compactly as first open and close valve, second open and close valve, the 3rd open and close valve, and, owing to can drive control simply, so can realize small-sized blood pressure measuring device.And by air cushioning case (not shown) is connected the pulse detection air bag, the pulse of hoop bag upstream side is alleviated with the phenomenon that air bag is detected by pulse detection portion by resistance blood, can improve the S/N ratio that systolic blood pressure is measured.

The invention is not restricted to above-mentioned embodiment, under the situation that does not break away from spirit of the present invention and scope, can carry out various changes and distortion.Therefore, in order to disclose scope of the present invention, add following claim.

Claims

1. blood pressure measuring device has:

Hoop bag main body, it comprises: the dismantled and assembled hoop bag parts that are arranged on freely on the blood pressure determination measuring point; What be laid in described hoop bag parts contacts a resistance blood air bag side, that be used to oppress whole blood pressure measurement position with the blood pressure measurement position; The described resistance blood that is laid in contacts the sub-air bag of heart one side that a side is oppressed the blood vessel at blood pressure measurement position with air bag with the blood pressure measurement position; And be laid in described resistance blood with air bag contact the pulse detection air bag of pulse in downstream slightly of central part that a side detects the blood vessel at blood pressure measurement position with the blood pressure measurement position,

Be used for adding the mechanism of decompressor to what described hoop bag main body was pressurizeed and reduced pressure;

Change the hoop bag pressure detecting mechanism that obtains binding round bag pressure signal with the pressure of air bag according to described pulse detection;

Detect the pulse detection mechanism that obtains pulse signal with the eclipsed pulse of described hoop bag pressure signal;

Determine the blood pressure testing agency of pressure value based on described hoop bag pressure signal and described pulse signal; And

The blood pressure indication mechanism that shows described pressure value,

Described blood pressure measuring device is characterised in that also have:

Connect described pulse detection first pipe arrangement with air bag and described hoop bag pressure detecting mechanism;

Connect described resistance blood with the air bag and the described mechanism of decompressor that adds, and second pipe arrangement that is connected with described hoop bag pressure detecting mechanism via the fluid stopper;

Connect described sub-air bag and described the 3rd pipe arrangement that adds the mechanism of decompressor via described open and close valve,

When with the needed pulse of described pulse detection mechanism's detection blood pressure measurement, making described open and close valve is closed condition, a series of pulse amplitude variations that will take place by described pulse detection mechanism obtain as described pulse signal, can measure systolic blood pressure value and diastolic blood pressure value in view of the above.

2. blood pressure measuring device according to claim 1 is characterized in that,

By described add the pressurization that the mechanism of decompressor begins described hoop bag main body after, when hoop bag pressure reaches the pressure of regulation, close described open and close valve, and continue to close to blood pressure measurement and finish.

3. blood pressure measuring device according to claim 1 is characterized in that,

By described add the pressurization that the mechanism of decompressor begins described hoop bag main body after, when through the stipulated time, close described open and close valve, and continue to close to blood pressure measurement and finish.

4. blood pressure measuring device according to claim 1 is characterized in that,

Between the described open and close valve of described the 3rd pipe arrangement and described hoop bag main body, be provided with its volume owing to pressure becomes big airbag.

5. blood pressure measuring device is characterized in that having:

Hoop bag main body, it comprises: the dismantled and assembled hoop bag parts that are arranged on freely on the blood pressure determination measuring point; Be comprised in resistance blood air bag in the described hoop bag parts, that be used to oppress the blood pressure measurement position; Described resistance blood contacting the opposite side of a side with the blood pressure measurement position and assist the described resistance blood of heart one side at blood pressure measurement position with the sub-air bag of the compressing of air bag with air bag is laid in; And be laid in described resistance blood with air bag contact the pulse detection air bag that a side is oppressed the blood vessel downstream at blood pressure measurement position and detected the pulse that takes place in the downstream with the blood pressure measurement position,

The mechanism of decompressor that adds that is connected described hoop bag main body for described hoop bag main body is added decompression via pipe arrangement with open and close valve; And

Change the hoop bag pressure detecting mechanism that obtain bind round bag pressure signal with air bag and described resistance blood with the pressure of air bag according to described pulse detection,

Described pipe arrangement has:

Connect described resistance blood with air bag and described first pipe arrangement that adds the mechanism of decompressor by first open and close valve;

Connect described sub-air bag and described second pipe arrangement that adds the mechanism of decompressor by second open and close valve; And

Connect described pulse detection the 3rd pipe arrangement by the 3rd open and close valve with air bag and described hoop bag pressure detecting mechanism,

Described first pipe arrangement that is connected with air bag with described resistance blood and with described the 3rd pipe arrangement that described pulse detection is connected with air bag between have the bypass flow path that constitutes by the first fluid stopper,

This blood pressure measuring device also has:

Determine the blood pressure determination means of pressure value based on described hoop bag pressure signal and described pulse signal; And

The indication mechanism that shows described pressure value,

Before described resistance blood is pressurizeed with air bag with air bag and described pulse detection, close described first open and close valve and described the 3rd open and close valve, opening described second open and close valve pressurizes and reaches the pressure of regulation up to described sub-air bag, adjust the air capacity of described sub-air bag by closing described second open and close valve then, and during measuring blood pressure, close described second open and close valve.

6. blood pressure measuring device according to claim 5 is characterized in that,

Described second open and close valve is opened when blood pressure measurement finishes or before blood pressure measurement begins, and thus the air in the described sub-air bag is carried out aerofluxus.

7. blood pressure measuring device according to claim 5 is characterized in that,

Described first open and close valve, described second open and close valve, described the 3rd open and close valve are electromagnetic valves.

8. blood pressure measuring device according to claim 5 is characterized in that,

On described the 3rd pipe arrangement, be connected with watertight aircase.

9. blood pressure measuring device has:

The dismantled and assembled hoop bag parts that are arranged on freely on the blood pressure determination measuring point;

Be comprised in resistance blood air bag in the described hoop bag parts, that be used to oppress the blood pressure measurement position;

Described resistance blood contacting the opposite side of a side with the blood pressure measurement position and assist the described resistance blood of heart one side at blood pressure measurement position with the sub-air bag of the compressing of air bag with air bag is laid in;

Change the hoop bag pressure detecting mechanism that obtains binding round bag pressure signal according to described resistance blood with the pressure of air bag,

Described pipe arrangement has:

Connect described resistance blood with air bag and described first pipe arrangement that adds the mechanism of decompressor via first open and close valve;

Connect described sub-air bag and described second pipe arrangement that adds the mechanism of decompressor via second open and close valve; And

Connect described pulse detection the 3rd pipe arrangement via the 3rd open and close valve with air bag and described hoop bag pressure detecting mechanism;

This blood pressure measuring device also has: detect the pulse detection mechanism that obtains pulse signal with the eclipsed pulse of described hoop bag pressure signal; Determine the blood pressure determination means of pressure value based on described hoop bag pressure signal and described pulse signal; And the indication mechanism that shows described pressure value,

Described blood pressure measuring device is characterised in that,

Before described resistance blood is pressurizeed with air bag, close described first open and close valve and described second open and close valve, open described the 3rd open and close valve, pressurize and reach the pressure of regulation up to described sub-air bag, adjust the air capacity of described sub-air bag by closing described second open and close valve then, and during measuring blood pressure, close described second open and close valve.