CN2371945Y

CN2371945Y - Wrist device for non-wound continuous measuring blood pressure

Info

Publication number: CN2371945Y
Application number: CN 99208086
Authority: CN
Inventors: 陆渭明
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-21
Filing date: 1999-04-21
Publication date: 2000-04-05
Anticipated expiration: 2009-04-21

Abstract

The utility model relates to a wrist device for non-wound continuous measuring blood pressure, comprising a pressurization utricule. The utility model is characterized in that the pressurization utricule is a local pressurizing utricule, an artery volume probe used for volume measurement is arranged on the pressurization utricule, and the pressurization utricule is fixed on afixing device. The existing blood vessel no-load method measuring point which is an artery blood vessel volume detection and external pressurized positions is changed into the proper position on wrists, and the utility model only oppresses one artery of the two arteries (a radial artery and an ulnar artery). Correctly measurement of the whole body blood pressure can be ensured, and basically no influence to the downstream bloodstream circulation of measured position.

Description

The wrist device that is used for Wound-less continuous blood pressure measuring

This utility model is relevant a kind ofly not to have the detection and the pressue device of wound continuous measurement human body artery blood pressure, a kind of specifically wrist device of no wound continuous blood pressure measuring instrument based on blood vessel no-load method principle.

For continuous measurement human body arteriotony all the time, so that monitor and follow the trail of the instantaneous variation of human blood-pressure incessantly, for many years, tradition adopts and insert conduit in shallow table arteries (maximum is the tremulous pulse of scratching of wrist) clinically, arterial blood is introduced pressure transducer carry out direct gaging method.Because this traditional method has wound, all the time exist complicated operation, cause suffering (so this pressure testing method can only under narcotism, carry out) to patient, easily cause bleeding after particularly using, problems such as complication such as infection, thrombosis, thromboembolism and nerve injury or sequela.

For this reason, people had studied multiple no wound continuous blood pressure measuring method in the last few years, and wherein the most noticeable is the method for a kind of being known as " blood vessel no-load method " (or " method is decided in the volume embedding ", " cubage compensation method ").Based on this method, several blood pressure measuring devices (Cs133205,1969 had once been developed abroad; US4510940; US4524777,1985; US4869261,1989 etc.), what wherein have also becomes commercialized (as FinapresTM2300, Ohmeda).According to the method during Wound-less continuous blood pressure measuring, the general volume pulse wave that a photoelectric probe detects tested tremulous pulse (promptly because arterial blood tube wall with the beat variation of arterial volume of generation of blood pressure ripple wherein) that adopts, control the pressure in the air bag (or water pocket) on the skin surface that is fixed on tested tremulous pulse top simultaneously, make the blood vessel wall of tested tremulous pulse except be subjected to original blood pressure ripple effect in the inboard, also be subjected to external pressure effect simultaneously in the outside, and then make the volume pulse wave of tested tremulous pulse change.When this feedback control makes the volume pulse wave of tested tremulous pulse be changed to a certain feature to occur, illustrate at this moment the blood vessel wall of tested tremulous pulse be the most soft at it, promptly do not have under any circumferential tensile what is called " idling " and beat.At this moment connecting a servo amplifying circuit is amplified this volume pulse wave, and remove further to control the pressure of air bag (or water pocket) with it, make be added in the tested arterial blood tube wall outside pressure not only waveform in shape and also all identical on the size at waveform with this endarterial blood pressure ripple, be that inside and outside both sides stressed of tested arterial blood tube wall is when reaching dynamic equilibrium, the blood vessel wall of tested tremulous pulse will no longer be beaten with endovascular blood pressure ripple, on the volume when its capacity of blood vessel will be fixed on its idling by embedding.At this moment need only the force value of measuring air bag (water pocket) with pressure transducer continuously, can realize the continuous blood pressure measurement.

Owing to make easy and simple to handlely in this way, need not calibration, and measurement result is not subject to the moving interferential influence of patient body, thereby is a kind of no wound continuous blood pressure measuring method that is suitable for clinical practice comparatively speaking.But also there is following point in this method: 1. this method generally is used in and measures the finger arterial pressure on the finger.This mainly is owing to be convenient to realize that photoelectricity capacity of blood vessel ripple detects on finger, also is convenient to fix, and is also less to the influence of limbs compressing simultaneously.But the finger tremulous pulse belongs to the peripheral arteriole big to resistance of blood flow, thereby whether just often used the blood pressure of the finger position what is called " systemic blood pressure " (i.e. the aortic blood pressure of close heart) with generally judging patient's blood pressure clinically compared, even under normal circumstances also will hang down about 10mmHg, if this difference can reach tens of mmHg under the arteriosclerosis situation.The more important thing is because big than in the large artery trunks blood vessel wall of the smooth muscle composition in the small artery blood vessel wall, and these vascular smooth muscle compositions very easily are subjected to the influence of various factors (such as cold, anesthesia etc.) to produce contraction or diastole, cause that blood pressure changes significantly in the small artery, to such an extent as to can not be used to reflect patient's systemic blood pressure with the pressure value that the finger tremulous pulse records at all in many occasions.Especially ought run into patient's the very poor occasion of circulatory function, the finger tremulous pulse occurs vascular smooth muscle sometimes and extremely shrinks and cause intra-arterial to lose blood, to such an extent as to can't measure blood pressure on finger.The general tubular air bag (water pocket) that adopts carried out full week pressurization to the middle joint or the base pitch of finger when 2. this method was to the pressurization of finger tremulous pulse.Because in the continuous blood pressure measuring process, pressure in the air bag (water pocket) always remains between finger systolic pressure of tremulous pulse and the diastolic pressure and changes, though this pressure for the tremulous pulse of pressed part only can cause blood flow to a certain degree decline and can not cause bloodstream blocking, but all vein blood vessels and the capillary blood flow of pressed part are blocked fully, cause that tested subordinate swims finger congestion, thereby be unsuitable for the long-time continuous use.At the problems referred to above 1., once the someone carried out this blood vessel no-load principle is used for the trial that brachial arterial pressure is measured at the upper arm position.Its result shows, can record near aortic systemic blood pressure though do like this, but it is because very dark in the position of upper arm place brachial artery, to oppress brachial artery fully and must carry out the pressurization in full week or approaching full week, thereby will make that in a short period of time the whole forearm in its downstream and the blood circulation of hand are seriously influenced upper arm; In addition, at the problems referred to above 2., also once the someone carried out this blood vessel no-load principle is used for the trial that head is measured the temporo arteriotony.Its basic point of departure is that head has abundant tremulous pulse, venous rete, if adopt a little air bag (water pocket) only to oppress the temporo tremulous pulse, even long-time continuous is measured blood pressure the head blood circulation is affected.But in fact in the fixing difficulty of temporo tremulous pulse place air bag, symptom such as particularly fixedly the bandage of usefulness can be oppressed the occipital bone tremulous pulse and the occipital bone vein of back head, and long-time continuous is used and also can be caused patient's headache, and is dizzy.And the temporo tremulous pulse also belongs to peripheral arteriole, and the pressure value that records on the temporo tremulous pulse can not be used for reflecting patient's systemic blood pressure well.

The purpose of this utility model provides a kind of wrist device that is used for Wound-less continuous blood pressure measuring, the measuring point of existing blood vessel no-load method, promptly arteries is carried out that volume detects and the position of external pressurized is changed on the suitable position of wrist, and only oppress the radicular arteries in wrist two radicular arterieses (scratching tremulous pulse and ulnar artery).Thereby guarantee correctly to measure the systemic blood pressure of human body, and the blood flow circulation in downstream, tested position is not influenced basically.

For achieving the above object, the solution that this utility model adopts is: a kind of wrist device that is used for Wound-less continuous blood pressure measuring, comprise a pressurization utricule, it is characterized in that this pressurization utricule is a pressurized utricule, which is provided with and carry out the arterial volume probe that volume detects, this pressurization utricule is fixed on the fixture.

The purpose of this utility model also can be realized by following measure, described pressurization utricule is flat, its diameter can be the 1/2-1/3 of wrist diameter, adopting towards the medial wall of wrist of pressurization utricule be thin and soft, have certain elastic trnaslucent materials makes, and make it have the shape of protruding to the inside, and the wall and the wall toward the outer side along circumference one circle of this utricule adopt the material with certain degree of hardness to make.The fixture of pressurization utricule can be one and has certain rigidity and certain elastic fixedly bandage, and the fixing of its two ends should adopt the device with non-telescoping property.The width of bandage should be greater than 50mm for general adult, and its face towards wrist should have the concaveconvex shape that matches in wrist.The pressurization utricule can be made of one with bandage, promptly bandage on the position face of wrist,, process a flat pit that diameter is identical with the utricule diameter corresponding to the pressurization utricule, with the edge sealed engagement of the pit of the edge of the described utricule medial wall that makes with trnaslucent materials and bandage.Described arterial volume probe can be a photoelectricity volume probe, the reflective photoelectric sensor that this photoelectricity volume probe is made of luminescent device and photoelectric device, described luminescent device and photoelectric device by with the interval of 5-10mm along the fixing inner surface of the fixing pressurization of the length direction utricule medial wall of bandage of utricule, and the center of the described medial wall of midpoint alignment of two device lines.Fixture also includes the fixing holder of a wrist.The fixing holder of described wrist is the supporting plate of being made by the hard material with certain intensity, its length and width should cover from the finger base pitch to the dorsal part demifacet near whole the back of the hand, wrist and the forearm of elbow joint, and its shape should guarantee it medial surface can with the back of the hand, wrist dorsal part and postcubital shape kissing and.Be fixed with several little bandages in the fixing holder of wrist, and the medial surface of fixing holder is stained with the liner of one deck soft material.Wrist fixedly holder can adopt the polylith supporting plate to be combined into, and adopts adjustable bindiny mechanism to interconnect between these supporting plates.

The pressurization utricule that is provided with arterial volume probe can be in that each fixes one respectively on corresponding to the position of scratching tremulous pulse and ulnar artery of wrist portion on the bandage.

Though operation principle of the present utility model and effect are that 1. to scratch the diameter of tremulous pulse or ulnar artery smaller than the diameter of upper arm place brachial artery, but it is arteriolar much larger than finger tremulous pulse and temporo tremulous pulse etc., and the smooth muscle composition of scratching in the blood vessel wall of tremulous pulse or ulnar artery is less than in finger tremulous pulse and the temporo tremulous pulse, so the blood pressure of scratching tremulous pulse or ulnar artery than finger tremulous pulse and temporo tremulous pulse more near the human body systemic blood pressure, also be much smaller by the influence of various factors.Even and, generally also can measure the capacity of blood vessel ripple scratching on tremulous pulse or the ulnar artery, and the situation that blood pressure measurement can't carry out can not occur in the very poor occasion of patient's circulatory function.Particularly, be convenient to reasons such as operation owing to the These characteristics of wrist tremulous pulse and in wrist portion, the tremulous pulse of scratching at wrist position has the direct pressure measurement of wound to be applied to operation and critical illness monitoring by countries in the world as the most frequently used blood pressure measuring method for many years always, to such an extent as to the pressure value of wrist tremulous pulse always by clinical worker custom as the most reliable, the criterion of human body systemic blood pressure the most accurately, thereby utilize blood vessel no-load method Wound-less continuous blood pressure measuring to have high clinical use value at the wrist position.2. tremulous pulse that the normal person is bigger at the wrist place and vein are all more than two, and wherein two radicular arterieses (scratching tremulous pulse and ulnar artery) are interconnected by two archs of aorta at the inner quilt of palm, and several veins also are interconnected by dorsal venous rete of hand at the back of hands.Even if being interconnected between these blood vessels guaranteed to make certain radicular arteries of wrist portion or/and the part vein is blocked for a long time, but another radicular arteries and other most veins are when still can blood flow unimpeded, and the blood circulation of hand can not be affected basically yet.Thereby, on wrist is scratched a radicular arteries in tremulous pulse and the ulnar artery, utilize the blood vessel no-load method can realize not having for a long time the wound continuous blood pressure and measure.In fact, owing to scratch tremulous pulse and ulnar artery location tables when passing the wrist position is shallow, and apart from each other, several veins also disperse in the distribution at wrist position very much, can also guarantee when wrist portion accomplishes only a radicular arteries fully to be oppressed that another radicular arteries and unimpeded being not difficult of other most venous blood flows realize.In addition, implement this no wound continuous blood pressure in wrist portion and measure, advantage such as obviously easy to operate in addition, that pressue device is easy to fix.This utility model also in addition

The explanation of accompanying drawing drawing:

Fig. 1 is a user mode sketch map of the present utility model.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is the cutaway view of the wrist unit of Fig. 2.

Fig. 4 is the fundamental diagram of second kind of embodiment of the present utility model.

Fig. 5 is the structural representation of the third embodiment of the present utility model

The utility model is described in further detail to use embodiment and danger figure thereof below.

Fig. 1 is a user mode of the present utility model.It shows that this utility model wrist device 1 is that a volume detects and controlled external pressurized device, and this wrist device is connected in a measurement-feedback control system 2.This measurement-feedback control system 2 has directly adopted the measurement-feedback control system among the existing early production Finapres TM2300.

Seeing also Fig. 2 and shown in Figure 3, is that the tremulous pulse of scratching of scratching in tremulous pulse 11 and the ulnar artery 12 to wrist portion carries out that volume detects and external pressurized at present embodiment, and the continuous blood pressure of tremulous pulse measures thereby realize scratching.In the present embodiment, this wrist device 1 comprises a pressurization utricule, and it is connected in above-mentioned measurement-feedback control system 2 by a conduit, and this pressurization utricule is fixed in a fixedly bandage 4, scratches arterial volume probe 5 and is located on the pressurization utricule.This utility model also comprises the fixing holder of wrist.

In the present embodiment, this pressurization utricule is one and scratches tremulous pulse pressurised airbag 3 that it is a flat round balloon.For the pressure that guarantees this air bag can pass to the degree of depth of scratching tremulous pulse 11 places fully, the diameter of this air bag should be big fully, but excessively can be urged to another root ulnar artery 12 and other vein blood vessels simultaneously, can increase the volume of air bag simultaneously, thereby make the pressure in the air bag 3 be difficult to obtain quick control, so this diameter is chosen as the 1/2-1/3 of wrist diameter, for example can be selected in 30-40mm for general adult.In addition, in order to guarantee that this air bag 3 produces circumferential tension force and influences scratching effective compressing of tremulous pulse in being unlikely to because of the wall of expansion at it after the inflation, that the wall 7 towards inboard (wrist) of this air bag adopts is thin and soft, have certain elastic semitransparent thin film, and make it have the shape of protruding to the inside, and the wall and the wall toward the outer side along circumference one circle of this air bag adopt the thin film with certain degree of hardness to make.

Inflatable bag fixing band 4 is used to pressurised airbag 3 is fixed on the above-mentioned wrist location.In fact, for simplified structure, present embodiment has been made one to air bag 3 and bandage 4, promptly adopt the bandage 4 that certain thickness and hardness are arranged, on the position corresponding to air bag of the face of wrist, process a diameter flat round pool identical at it with air bag 3 diameters, then the edge of above-mentioned air bag medial wall 7 made from thin film is bonded on the edge of pit of bandage 4, this cavity with certain degree of hardness constitutes above-mentioned air bag 3 on this air bag medial wall 7 made from thin film and the bandage 4 thereby utilize.Because the intrinsic pressure of above-mentioned air bag 3 will be cooked pulsatile change according to the blood pressure of scratching tremulous pulse 11 when utilizing blood vessel noinvasive method continuous blood pressure measuring, also be unlikely to beating of any direction taken place under the intrinsic pressure effect of this big pulse for the position that guarantees this air bag and cause feedback control system self-oscillation, this bandage 4 all should have certain rigidity on the whole, and the fixing of its two ends should adopt the device with non-telescoping property.In the present embodiment, the two ends of this bandage 4 are utilized velcro 8 and are fixed in the fixing holder 6 of wrist.In addition, the material of this bandage 4 also should have certain elasticity, and when attenuating slightly after being subjected to long-time continuous compressing with convenient wrist, its rebound performance can also make it to be fastened on air bag on the wrist can not become flexible.On the other hand, in order to guarantee only fully to oppress the tested tremulous pulse of scratching by air bag 3, and reduce the pressure of 4 pairs of other parts of wrist of bandage as much as possible, thereby in order to avoid block the blood circulation that another root ulnar artery and most vein influence its downstream hand, effective contact area of this bandage and wrist should be greater than 3 times of the pressurization area of air bag 3, should adopt big as far as possible bandage width for this reason, should be for general adult greater than 50mm.Bandage 4 has the concaveconvex shape that matches in wrist towards the mask of skin.

Scratching arterial volume probe 5 is reflective photoelectric sensors.Be fixed on the wrist with above-mentioned air bag 3 for the ease of utilizing bandage 4 to pop one's head in, and do not hinder air bag to be adjacent to the wrist surface, this is popped one's head in by the inside of the above-mentioned air bag of interior plant.This probe is made of a luminescent device 9 and a photoelectric device 10.These two

devices

9 and 10 are sticked on the inner surface of the medial wall 7 that makes with semitransparent thin film of above-mentioned air bag 3 by the interval with 5-10mm.During stickup, should make the sensitive surface of the light-emitting area of luminescent device 9 and photoelectric device 10 towards the inner surface of thin film medial wall 7, for making line between these two

devices

9 and 10 with to scratch the tremulous pulse direction of travel perpendicular, the line between two

devices

9 and 10 should be perpendicular along the length direction of bandage; Make the center of the midpoint alignment thin film medial wall 7 of line simultaneously, with protect just when the centrally aligned wrist of air bag 3 show most shallow place scratch tremulous pulse 11 time, these two

devices

9 and 10 can be positioned at the both sides of scratching tremulous pulse on the wrist surface, the center of the detection range of this volume probe is just in time aimed at scratched tremulous pulse.When volume probe 5 is used to detect the capacity of blood vessel variation of scratching tremulous pulse 11, wrist inside is injected in the medial wall 7 that makes with semitransparent thin film of the light transmission air bag 3 that luminescent device 9 wherein sends, and reflexes in the photoelectric device 10 through wherein scratching tremulous pulse 11 and surrounding soft tissue.Because the capacity of blood vessel variation of scratching tremulous pulse 11 can cause and reflex to the intensity variation in the photoelectric device 10 and then the output current of photoelectric device 10 is changed, volume probe 5 just can convert the volume of scratching tremulous pulse to and scratch the output of arterial volume pulse wave signal with the variation of blood pressure ripple thus.

The fixing holder 6 of wrist is used to fixedly palm with respect to the angle of wrist, and wrist is with respect to the close elbow joint part of forearm angle, to guarantee that measuring in the process of blood pressure the measured in long-time continuous any body occurs when moving, pressurised airbag 3 and volume probe 5 remain constant with respect to the position of scratching tremulous pulse 11.Simultaneously, use of this fixing holder can also be played the effect of the pressure that disperses 4 pairs of wrist dorsal parts of bandage that fixation balloon uses.The fixing holder 6 of this wrist is supporting plates made from the hard material that certain intensity is arranged, its length and width should guarantee to cover from the finger base pitch to the dorsal part demifacet near whole the back of the hand, wrist and the forearm of elbow joint, and its shape should guarantee that its medial surface can be in the back of the hand, wrist dorsal part and postcubital shape kissing and (therefore, in order to adapt to the forearm of different length, thickness, it is standby to do several fixedly holders respectively).Being fixed with the little bandage 15 that several ends are sewed with velcro in the fixing holder 6 of this wrist is used for measured's forearm, wrist and hands are tied up in the fixing holder 6 of this wrist.For avoiding the fixing holder measured of causing really up to the mark uncomfortable, can glue the liner 16 of one deck soft material at the medial surface of fixing holder, but this liner is unsuitable blocked up, soft excessively, otherwise can influence the fixed effect of wrist, simultaneously also can be when air bag be intrinsic pressure when making significantly pulsatile change with blood pressure, under the intrinsic pressure effect of the pulsation of air bag, produce the feedback control system of beating and produce self-oscillation to such an extent as to wrist occurs.

This reality is novel to be used to scratch tremulous pulse does not have operation principle that the wound continuous blood pressure measures as shown in Figure 1, when utilizing above-mentioned wrist unit 1 to scratch the arteriotony measurement, must serve as that measurement-feedback control system 2 of controlling purpose engages with one with the blood vessel no-load with this wrist unit.Bonded method is very simple, promptly the lead-in wire of scratching luminescent device 9 in the arterial volume probe 5 and photoelectric device 10 in this wrist unit 1 was used for being connected to the outfan (this outfan is omitted in Fig. 1) of the luminescent device power supply of finger arterial volume probe and the plethysmogram signal input 17 of photoelectric device respectively with in the measurements-feedback control system originally, the while is being used for originally being connected to the airway 18 of pointing tremulous pulse pressurised airbag air feed in the voltage-air pressure conversion equipment in measurement-feedback control system of the airway of scratching tremulous pulse pressurised airbag 3 in this wrist unit 1 and Finapres.

When use does not have the wound continuous measurement by 2 embodiment dimerous of the measurement-feedback control system among above-mentioned wrist unit 1 and the Finapres to scratching arteriotony, at first measured's the back of the hand, wrist and forearm is fixed in the fixing holder 6 of wrist in the wrist unit 1, and then after the tested wrist of the centrally aligned of the air bag in the wrist unit 3 being scratched the shallow place of table of tremulous pulse 11, inflatable bag fixing band 4 is wrapped in wrist portion, and fixedly the two ends of bandage utilize the fixing holder 6 of velcro 8 and wrist to be fixed together.Finish said fixing and be connected the back start to measure-control system 2 of instead bursting enters automatic mode.When wherein blood pressure continuous measurement begins, scratch the volume of tremulous pulse when the idling for what find and write down the measured, measurement-feedback control system 2 is at first received " open loop " position to duty switch 19.Under this operate in open loop state state, the capacity of blood vessel that volume in the wrist unit 1 probe 5 will be scratched tremulous pulse converts to the variation of blood pressure ripple and scratches the arterial volume ripple, the voltage of service voltage-pneumatic pressure converter 21 is automatically regulated in gasbag pressure initialization circuit 20 beginnings in the simultaneity factor, and the air bag 3 in the wrist unit 1 is begun scratching tremulous pulse 11 external pressurized.Along with the increase of scratching the tremulous pulse external pressure, scratch arterial volume wave amplitude and shape and all will change.To scratch the arteries volume be that the blood vessel idling is volumetrical has changed up and down at this with the variation of blood pressure ripple when scratching the arterial volume wave amplitude when reaching maximum, illustrating.At this moment system can make gasbag pressure initialization circuit 20 stop the pressure of air bag 3 is regulated, and the meansigma methods (direct current composition) that makes a no-load volume memory circuit 22 write down at this moment to scratch the arterial volume ripple is scratched the idling volume V o of tremulous pulse as the measured.Find and remember under scratch the idling volume V o of tremulous pulse as the measured after, measurement-feedback control system 2 is automatically received " closed loop " position to duty switch 19, and the gain of the wherein servo amplifying circuit 23 of increase gradually, near the volume 5 detected volume ripples of tremulous pulse this idling volume of scratching of popping one's head in are subtracted each other poor (promptly the scratching the Alternating Component of arteries volume ripple) that obtain with the no-load volume V o that is write down by no-load volume memory circuit 22 by a comparison circuit 24 and amplified, and driving voltage-pneumatic pressure converter 21 removes to control air bag 3 and further applies the waveform pressure the same with its internal blood pressure waveform from the outside to scratching tremulous pulse 11, makes the amplitude of scratching the volume ripple that tremulous pulse produces with the internal blood pressure ripple begin to diminish.Since when the gain of servo amplifying circuit 23 be adjusted to air bag 3 is added in scratch tremulous pulse 11 outsides pressure not only in shape at waveform, and it is also fully identical on the size of waveform with the blood pressure waveform of scratching tremulous pulse inside, when inside and outside both sides stressed of promptly scratching the arterial blood tube wall reaches dynamic equilibrium, the blood vessel wall of scratching tremulous pulse will no longer be beaten with endovascular blood pressure ripple, and the capacity of blood vessel of scratching tremulous pulse will be fixed on its idling volume V o by complete embedding.So under closed-loop working state, as long as the time point that makes system find the volume wave-amplitude of scratching tremulous pulse 11 finally to go to zero simultaneously in the gain that increases servo amplifying circuit 23 gradually, just can affirm the air pressure that begins thus in the pressurised airbag 3 at any time all with scratch tremulous pulse 11 in blood pressure equate, at this moment use the intrinsic pressure no wound continuous measurement that can realize scratching arteriotony of the pressure transducer 25 continuous measurement pressurised airbag 3 that link to each other with pressurised airbag 3.

Fig. 4 illustrates the third embodiment of the present utility model, in the present embodiment, in keep capacity of blood vessel probe pressurised airbag 3 on corresponding to the position of scratching tremulous pulse and ulnar artery of wrist portion, respectively be provided with one respectively, and a switching device shifter is set, make them alternately carry out volume detection and external pressurized at set intervals to scratching tremulous pulse and ulnar artery.This kind method more helps long-time continuous and measures blood pressure, can avoid oppressing for a long time pain and the numbness that cause in a place because be used alternatingly two radicular arterieses.

The third embodiment of the present utility model as shown in Figure 5.The fixing holder of wrist in the present embodiment adopts polylith supporting plate 60 to be combined into.These supporting plates 60 are by by adjustable bindiny mechanism, be interconnected on the supporting plate 61 as universal joint 62, adjust bindiny mechanism, reach the amalgamation angle of regulating supporting plate 6 as universal joint 62, it is shared and needn't make respectively for them for having different measured fat or thin, the length forearm that the fixing holder 6 of the wrist that supporting plate is combined into can be adjusted to multiple shape.The fixing holder 6 of wrist also can be spliced fixing by other mode, is not limited to the shown structure of present embodiment.

Claims

1. wrist device that is used for Wound-less continuous blood pressure measuring, comprise a pressurization utricule, it is characterized in that this pressurization utricule is a pressurized utricule, which is provided with and carry out the arterial volume probe that volume detects that this pressurization utricule is fixed on the fixture.

2. a kind of wrist device that is used for Wound-less continuous blood pressure measuring according to claim 1, it is characterized in that described pressurization utricule is flat, its diameter can be the 1/2-1/3 of wrist diameter, adopting towards the medial wall of wrist of pressurization utricule be thin and soft, have certain elastic trnaslucent materials makes, and make it have the shape of protruding to the inside, and the wall and the wall toward the outer side along circumference one circle of this utricule adopt the material with certain degree of hardness to make.

3. the wrist device that is used for Wound-less continuous blood pressure measuring according to claim 1, the fixture that it is characterized in that described pressurization utricule can be one and has certain rigidity and certain elastic fixedly bandage, and the fixing of its two ends should adopt the device with non-telescoping property.

4. according to claim 1 or 3 described a kind of wrist devices that are used for Wound-less continuous blood pressure measuring, it is characterized in that the width of described bandage should be greater than 50mm for general adult, its face towards wrist should have the concaveconvex shape that matches in wrist.

5. according to claim 1 or 3 described a kind of wrist devices that are used for Wound-less continuous blood pressure measuring, it is characterized in that described pressurization utricule can be made of one with bandage, promptly bandage on the position face of wrist,, process a flat pit that diameter is identical with the utricule diameter corresponding to the pressurization utricule, with the edge sealed engagement of the pit of the edge of the described utricule medial wall that makes with trnaslucent materials and bandage.

6. a kind of wrist device that is used for Wound-less continuous blood pressure measuring according to claim 1, it is characterized in that described photoelectricity volume probe can be a reflective photoelectric sensor that is made of luminescent device and photoelectric device, described luminescent device and photoelectric device by with the interval of 5-10mm along the fixing inner surface of the fixing pressurization of the length direction utricule medial wall of bandage of utricule, and the center of the described medial wall of midpoint alignment of two device lines.

7. a kind of wrist device that is used for Wound-less continuous blood pressure measuring according to claim 1 is characterized in that described fixture also includes the fixing holder of a wrist.The fixing holder of described wrist is the supporting plate of being made by the hard material with certain intensity, its length and width should cover from the finger base pitch to the dorsal part demifacet near whole the back of the hand, wrist and the forearm of elbow joint, and its shape should guarantee it medial surface can with the back of the hand, wrist dorsal part and postcubital shape kissing and.

8. according to claim 1 or 7 described a kind of wrist devices that are used for Wound-less continuous blood pressure measuring, it is characterized in that being fixed with several little bandages in the fixing holder of described wrist, and the medial surface of fixing holder is stained with the liner of one deck soft material.

9. according to claim 1 or 7 described a kind of wrist devices that are used for Wound-less continuous blood pressure measuring, it is characterized in that described wrist fixedly holder can adopt the polylith supporting plate to be combined into, adopt adjustable bindiny mechanism to interconnect between these supporting plates.

10. a kind of wrist device that is used for Wound-less continuous blood pressure measuring according to claim 1 is characterized in that the described pressurization utricule that is provided with arterial volume probe can be in that each fixes one respectively on corresponding to the position of scratching tremulous pulse and ulnar artery of wrist portion on the bandage.