CN2083912U - Elastic pulse sensor - Google Patents

Abstract

The utility model provides an elastic pulse sensor which is used for non-destructively inspecting the superficial arteries of each part from head to foot of human bodies or testing animals, in particular to a radial artery vascular pulsation. The elastic pulse sensor is composed of a pressure control device, a pressure buffer, a device for withdrawing samples, a pressure sensor apparatus, etc. The structure of the devices is mutual communication and separation, wherein, a sampling bursa and a pressing bursa are made of elastic materials. When the pulses are measured, the sampling actions of the sampling bursa are controlled by the stretching of the pressing bursa. The sampling bursa presses blood vessels and the elastic pulse sensor collects pulse signals. The utility model creates a new approach to quantitatively measure pulse wave parameter and pulse-feeling pressure value.

Description

Elastic pulse sensor

This utility model provides a kind of special-purpose pulse transducer, and it is a kind of each table shallow artery of Non-Destructive Testing human body or laboratory animal whole body beat elasticity pulse transducer of special development of radial artery vascular particularly that is.The vascular that this pick off also can be used for detecting the surgical exposure tremulous pulse is beaten.

Be used to detect the pick off that vascular is beaten in the past, and all adopted rigid material to make and touch son.Because to touch sub-quality hard for rigidity, corner angle appear, and when detecting under long-time, high pressure condition, often cause the distortion of sampling point local organization, pain and vascular spasm, cause the pulse signal distortion.In addition, this class pick off also has some shortcomings, for example, adopts manual pressure or pressure reducing mode, and complex operation is time-consuming, can not continuous sampling, and fixture influences vascular and beats etc.

This utility model has been made a kind of elasticity pulse transducer just in order to overcome the shortcoming of above-mentioned prior art, and it partly is made up of pressure control device, pressure buffer device, sampler, pressure sensor device etc.It is foundation that this pick off is got pulse-taking principle with the traditional finger feeling the pulse with the finger-tip of the traditional Chinese medical science, select for use elastomeric material to make sampling capsule (or claiming to touch son, contact), utilize elasticity to touch son and get arteries and veins, can make and get the arteries and veins position and feel to get the arteries and veins comfortable, thereby avoid adopting the rigid son that touches to get the artefact that arteries and veins causes in the past just as the finger feeling the pulse with the finger-tip.Simultaneously, this pick off utilizes the stretching, extension of pressurized capsule and the pulsation of getting of the control sampling capsule that bounces back is done, and has reached the purpose of once obtaining whole pulse condition informations, so the operate miss that sampling is caused can be avoided manually, be interrupted to this arteries and veins mode of getting.This utility model adopts the principle of " integral body splits ", and main purpose is that sampler is separated, and is fixed in sampling point separately, so that the volume and weight of reduced sampling device to greatest extent.Not only created condition like this, but also simplified operation sequence to greatest extent, shortened detection time, improved accuracy of detection for getting arteries and veins at each position of whole body.

This utility model is represented with following accompanying drawing.

Fig. 1 is the overall structure sketch map of elasticity pulse transducer.

Fig. 2 (1) is the sampler axonometric chart in the elasticity pulse transducer.

Fig. 2 (2) is the preceding A-A of sampler sampling, B-B cutaway view.

Fig. 2 (3) is A-A in the sampler sampling process, B-B cutaway view.

Below, by accompanying drawing this utility model is elaborated.

Elasticity pulse transducer (as shown in Figure 1) is made up of drawer G, all parts of pressure sensor device H in pressure control device A, conduit B1, B2, B3, pressure buffer device C, fixing band D, sampler E, the outer drawer F of subrack, the subrack.

As shown in Figure 1.A is a pressure control device, is linked by gas cell A1 and gauge tap A2 and forms, and the gauge tap A2 other end communicates with pressure buffer device C by conduit B1.When switch A2 opens, can two-wayly ventilate; When switch A2 closes, can be manually unidirectional to pressure buffer device C inflation by gas cell A1, stop manually inflation after, can oppositely not exit or with certain pressure gradient venting (deciding) according to gauge tap A2 type.Pressure buffer device C has a constant volume and favorable sealing property, and the one end inserts two conduit B1 and B2, makes it to communicate with pressure control device A and sampler E respectively.The effect of pressure control device A is both can be by gas cell A1 inflation, inflate air in the sampler E through conduit B1, pressure buffer device C and conduit B2, make its intrinsic pressure rising, again can by gauge tap A2 close or open the high pressure that keeps in it, perhaps make its intrinsic pressure reduction with the venting of certain pressure gradient.Pressure buffer device C is because of having a constant volume, so the gas that pressure control device A charges into through pressure buffer device C buffering, can reduce the speed that its internal pressure changes in entering sampler E process.

Sampler E is the important component part of whole elasticity pulse transducer.See Fig. 2.Fig. 2 (1) is the axonometric chart of this device, and Fig. 2 (2), Fig. 2 (3) are respectively (during pressurization) A-A, B-B cutaway view in preceding (when not pressurizeing) A-A, B-B of this device sampling and the sampling process.Sampler E is made up of sampling capsule E1, protective cover E2, pressurized capsule E3, fixed mount E4 four parts, and it is cylindric that main part is.As shown in Figure 2.E1 is the sampling capsule, and it is made system and copies the traditional Chinese medical science feel the pulse elasticity, shape and the size of used feeling the pulse with the finger-tip, adopts elastomeric material to make, cylindrical empty pocket, and body diameter can be determined according to the bore of detected blood vessel.Sampling capsule E1 sidewall on the lower side portion be provided with a small through hole E1 ', be linked to pressure sensor device H with conduit B3.Pressure sensor device H can select general pressure transducer for use, is provided with pressure cell in it, pressure signal can be changed into the signal of telecommunication and deliver to pressure amplifier so that detect and trace.To take a sample is full of a certain amount of gas or liquid in capsule E1, conduit B3 and the pressure sensor device H and causes sampling capsule E1 and heave, and makes its intrinsic pressure external atmosphere pressure that is similar to.During use, with the bottom surface E1 of sampling capsule E1 " directly contact sampling point, like this, beating of vascular just can cause the variation of sampling capsule E1 internal pressure, and in conduit B3 conducts to pressure sensor device H.Therefore, the effect of sampling capsule E1 is to measure pulse wave signal and feeling the pulse power value (feeling the pulse power value is promptly taken a sample capsule E1 to the force value of sampling point, can by the force value reflection of gas in its capsule or liquid).E2 is a protective cover, and " two parts formation all adopts harder lightweight material to make by protective cover tube E2 ' and protection cover cap E2.Protective cover tube E2 ' is supreme hollow cylinder of going to the bottom, and internal diameter is slightly larger than the external diameter of sampling capsule E1, and the capsule height of the Gao Yingyu sampling capsule E1 of protective cover tube E2 ' adapts." make disc, diameter equates that with protective cover tube E2 ' external diameter " circle centre position is established an aperture E3 ', is linked to pressure buffer device C with conduit B2 at protection cover cap E2 to protection cover cap E2.The sidewall of protective cover tube E2 ' on the lower side portion open a perps, to derive the conduit B3 that is connected with E1 '.The wall of protective cover tube E2 ' and protection cover cap E2 are " all unsuitable blocked up.E3 is a pressurized capsule, is made of two walls up and down, and the capsule upper wall is above-mentioned protection cover cap E2 " medial surface, the capsule lower wall is made by the round and elastic material, diameter protects cover cap E2 " equal diameters with the capsule upper wall.During making, " the mutual seal bond in edge; earlier with mural margin under the pressurized capsule E3 and protection cover cap E2 again with protective cover tube E2 ' and protection cover cap E2 " good bond, the edge clamping that makes pressurized capsule E3 lower wall is at protection cover cap E2 " and between the protective cover tube E2 '; then sampling capsule E1 can be embedded in the protective cover tube E2 ' fully, and conduit B3 is drawn through the perps of protective cover tube E2 ' wall downside.Sampling capsule E1 and pressurized capsule E3 all can bear the pressure of 0-250mmHg.Shown in Fig. 1, Fig. 2 (2), Fig. 2 (3), gauge tap A2 in pressure control device A closes, gas cell A1 through conduit B1 when pressure buffer device C direction is inflated, because pressure buffer device C communicates with pressurized capsule E3 through conduit B2, to cause that pressure buffer device C, conduit B1, B2 and pressurized capsule E3 internal pressure increase, must cause pressurized capsule E3 lower wall to expand downwards, and capsule E1 axially the ejecting downwards along protective cover tube E2 ' of will taking a sample.This shows that the effect of protective cover E2 is to protect, fixing sampling capsule E1, pressurized capsule E3 and the coaxial direction that limits E1, E3 two capsules stretch and move.The effect of pressurized capsule E3 only is to exert pressure to sampling capsule E1.E4 is two fixed mounts, is made by harder lightweight material "

" shape is individually fixed in protective cover tube E3 ' outer wall part on the lower side, and parallel with the B-B section, is used to install two fixing band D, shown in Fig. 1 and Fig. 2 (1).D is two fixing bands, makes with firmer soft material, and every fixing band one end links fixed mount E4, the other end is free, free-end is equipped with adjustable connecting buckle (as velcro), two free-ends firmly can be linked mutually, is used for sampler E is fixed in sampling point.

Drawer G is the subrack (as Fig. 1) that fuses in outer drawer F of subrack and the subrack, can insert in the subrack seat of main frame setting.When not working, the outer drawer F of subrack can deposit parts such as pressure control device A, conduit B1, B2, B3, fixing band D and sampler E.Drawer G is used for setting pressure buffer unit C and pressure sensor device H in the subrack.

When bringing into use the elasticity pulse transducer to take a sample, at first the gauge tap A2 with pressure control device A opens, so that air emptying in the pressurized capsule E3, sampling capsule E1 embeds in the protective cover E2 fully, as Fig. 2 (2).Capsule E1 bottom surface E1 will take a sample, and " aim at the sampling blood vessel, and make this plane E1 " is attached at sampling point, with fixing band D sampler E is fixed in sampling point (as Fig. 1), note fixing should not tension.Gauge tap A2 on the closing presure control device A, the unidirectional inflation of gas cell A1, through conduit B1, pressure buffer device C, conduit B2 to pressurized capsule E3, make its intrinsic pressure increasing, then pressurized capsule E3 lower wall expands downwards along protective cover tube E2 ', promote sampling capsule E1 and axially move down, as Fig. 2 (3) along protective cover tube E2 '.The while counteracting force makes on the protective cover E2 and moves, and protective cover tube E2 ' lower edge disengaging sampling point can prevent protective cover tube E2 ' lower edge like this and owing to contact sampling point the sampling vascular be oppressed and stimulation, has improved the detection degree of accuracy.The pressurization of pressurized capsule E3, the capsule E1 that causes taking a sample is touched sampling point and the sampling blood vessel is imposed certain pressure, making sampling capsule E1 can experience vascular beats, thereby pulse signal (comprising pulse wave and feeling the pulse power value) is reached pressure sensor device H through conduit B3, and carry out the observation of pulse signal and trace by the pressure amplifier that pressure sensor device H is connected.When reaching desired pressure, stop the manual inflation of gas cell A1, just can get under the constant feeling the pulse power value or certain pressure graded feeling the pulse power value under pulse waveform and feeling the pulse power value.After sampling finishes, open gauge tap A2, with air emptying in the pressurized capsule E3, sampling capsule E1 resets, as Fig. 2 (2).Deposit among the outer drawer F of the subrack of at last pressure control device A, conduit B1, B2, B3, fixing band D and sampler E being packed into.

This utility model is according to the physical characteristic of feeling the pulse finger feeling the pulse with the finger-tip, adopt elastomeric material to make and touch son (sampling capsule), to reduce stimulation to sampling point, and by the extension and contraction control of pressurized capsule touch the son sampling action, simultaneously, this pick off adopts " integral body splits " principle, between the several means structurally is to be interconnected and to split each other, thereby can reaches the high fidelity of detection signal on function.Therefore, this utility model has overcome the deficiency of prior art, and can reach accurate, convenient, dexterous, the comfortable purpose of detection.

Claims (3)

1, a kind of Non-Destructive Testing human body or each table shallow artery of laboratory animal whole body of being used for, the radial artery vascular elasticity pulse transducer of beating particularly, partly form by pressure control device, pressure buffer device, sampler, pressure sensor device etc., wherein sampler is made up of sampling capsule, protective cover, pressurized capsule and fixed mount four parts, it is characterized in that: several means structurally interconnects by conduit, and promptly pressure control device links to each other with pressure buffer device; Pressure buffer device links to each other with pressurized capsule in the sampler; Sampling capsule in the sampler links to each other with pressure sensor device.

2, by the described pick off of claim 1, it is characterized in that: the shell (protective cover) that touches son (sampling capsule) and sampler in the sampler, on its axial direction being can be synchronization-moving.

3, by claim 1,2 described pick offs, it is characterized in that: sampling capsule in the sampler and pressurized capsule are that elastomeric material makes.

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