CN208492072U - Vapour-pressure type finger pulse measurement device - Google Patents
Vapour-pressure type finger pulse measurement device Download PDFInfo
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- CN208492072U CN208492072U CN201721425370.5U CN201721425370U CN208492072U CN 208492072 U CN208492072 U CN 208492072U CN 201721425370 U CN201721425370 U CN 201721425370U CN 208492072 U CN208492072 U CN 208492072U
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Abstract
A kind of vapour-pressure type finger pulse measurement device, it include: semi-open type shell, cylindrical slider, air pump and differential pressure pickup, wherein: the measurement chamber for being used to accommodate finger of reference pressure chamber and right side of the sliding block coaxial arrangement on the left of being divided into semi-open type shell and by semi-open type shell inner cavity, inner wall is equipped with ring packing film at semi-open type shell aperture, it seals film and semi-open type outer casing inner wall forms and accommodates gas with the annular lock chamber of fixed finger, differential pressure pickup is connected with reference pressure chamber and measurement chamber respectively, the actual pressure applied required for us to finger is obtained by the pressure difference value of the two, air pump respectively with reference pressure chamber, measurement chamber and lock chamber interlink, the utility model eliminates the interference of the extraneous factors such as temperature and pressure, without baseline drift, pulse wave is directly obtained by the vibration of detection air wave Waveform, to improve the accuracy of measurement data.
Description
Technical field
The utility model relates to a kind of technology of medical instruments field, specifically a kind of vapour-pressure type finger pulses measure
Device.
Background technique
The pulse wave for measuring human body is then extremely important a kind of medical inspection means in a modern medicine.From pulse wave
Extract foundation of the physiological and pathological information of human body as clinical diagnosis and treatment, the always attention by China and foreign countries' medical field.Arteries and veins
Signal of fighting is a kind of important physiology signal, circulatory system information abundant is contained, since pulse can be touched in body surface
It touches, thus pulse signal is taken with no pain, the acquisition advantages such as simple, low in cost.But pulse signal is detecting
Bioelectrical signals of the Shi Rongyi by human body, the interference of electric field, magnetic field, when monitoring pulse signal to the anti-interference ability of system and
Inhibit the Capability Requirement of noise high, the sensitivity of simultaneity factor and resolution capability want relatively good.
Medical research discovery: the women more than 50% male and more than 64% dies of the coronary heart disease of not advanced symptoms.Greatly
About 50% myocardial infarction patient is without traditional high risk factor.Moreover, in the normal situation of traditional high-risk and endothelial function, sternly
The incidence of center of gravity vascular events is 25%.The measurement of function of vascular endothelium index RHI depends on the measurement of accurate pulse wave.
Utility model content
The utility model is higher to sealing requirements for the prior art, is easy to be influenced to cause to reveal by assembly technology
The problems such as, it proposes a kind of vapour-pressure type finger pulse measurement device, eliminates the interference of the extraneous factors such as temperature and pressure, no baseline
Drift directly obtains the waveform of pulse wave by the vibration of detection air wave, to improve the accuracy of measurement data.
The utility model is achieved through the following technical solutions:
The utility model relates to a kind of vapour-pressure type finger pulse measurement devices, comprising: semi-open type shell, cylinder are sliding
Block, air pump and differential pressure pickup, in which: sliding block coaxial arrangement is divided into semi-open type shell and by semi-open type shell inner cavity
The reference pressure chamber in left side and right side for accommodating the measurement chamber of finger, it is close to be equipped with annular for inner wall at semi-open type shell aperture
Sealer, sealing film and semi-open type outer casing inner wall, which are formed, accommodates gas with the annular lock chamber of fixed finger, differential pressure pickup point
It is not connected with reference pressure chamber and measurement chamber, the reality applied required for us to finger is obtained by the pressure difference value of the two
Pressure, air pump interlink with reference pressure chamber, measurement chamber and lock chamber respectively.
Sealing ring is equipped between the sliding block outer peripheral surface and semi-open type outer casing inner wall.
The reference pressure chamber is sequentially connected with the first two position three-way valve and third two position three-way valve, and measurement chamber is connected with second
Two position three-way valve, air pump are connected with third two position three-way valve, the second two position three-way valve and lock chamber respectively by check valve.
The semi-open type shell is tubular-shaped structures, and inner wall is equipped with two annular grooves, sealing film axial ends difference
It is fixed in annular groove.
The sealing film axial ends gluing is in annular groove.
Detailed description of the invention
Fig. 1 is the utility model finger pulse measurement device structural schematic diagram；
Fig. 2 is sealing film mounting ring structural schematic diagram；
In figure: 1 semi-open type shell, 2 air pumps, 3 reference pressure chambers, 4 measurement chambers, 5 sliding blocks, 6 check valves, 7 the 1st
Triple valve, 8 second two position three-way valves, 9 sealing films, 10 lock chambers, 11 third two position three-way valves, 12 differential pressure pickups, 13 sealings
Film mounting ring, 14 ring bodies, 15 ring ribs.
Specific embodiment
As shown in Figure 1, the present embodiment includes: semi-open type shell 1, cylindrical slider 5, air pump 2 and differential pressure pickup 12,
Wherein: the coaxial arrangement of sliding block 5 is in the reference pressure chamber 3 for being divided into left side in semi-open type shell 1 and by semi-open 1 inner cavity of type shell
With the measurement chamber 4 on right side, semi-open 1 opening inner wall of type shell is equipped with ring packing film 9, sealing film 9 and semi-open type shell 1
Inner wall, which is formed, accommodates gas with the annular lock chamber 10 of fixed finger, differential pressure pickup 12 respectively with 10 phase of reference cavity and lock chamber
Even, air pump 2 is connected with reference pressure chamber 3, measurement chamber 4 and lock chamber 10 respectively.
Semi-open 1 left end of type shell is completely enclosed, and right-end openings, sliding block 5 is slideably positioned in semi-open type shell 1
In inner cavity, thus by the measurement chamber 4 of reference pressure chamber 3 and right side that semi-open 1 inner cavity of type shell is divided into left side.Reference pressure
Parameter in chamber 3 is all consistent with the gas in measurement chamber 4, so that when finally handling pulse wave directly to measurement
Waveform in chamber 4 and reference pressure chamber 3, which is subtracted each other, can obtain pulse wave, to exclude temperature, pressure, gas flow rate etc.
Influence of the external factor to measurement.
The sliding block 5 can slide axially along semi-open type shell 1, in 5 outer peripheral surface of sliding block and semi-open type shell 1
Sealing ring is equipped between wall, so that reference pressure chamber 3 and measurement chamber 4 are completely isolated.It can be along semi-open type by sliding block 5
Shell 1, which slides axially, keeps reference pressure chamber 3 identical with the pressure and temp measured in chamber 4.
Semi-open 1 inner wall of type shell is equipped with two annular grooves, and it is recessed that sealing 9 axial ends of film is individually fixed in annular
In slot, sealing 9 axial ends gluing of film in annular groove, thus partially formed between two annular grooves can gas injection come
The lock chamber 10 of fixed finger.Sealing film 9 is installed by sealing film mounting ring 13.
As shown in Fig. 2, the sealing film mounting ring 13 includes: ring body 14 and two ring ribs corresponding with two annular grooves
15, in which: ring rib 15 is set to 14 outer peripheral surface of ring body, and ring body 14 is that memorial alloy is made with ring rib 15.
The present embodiment is related to the installation method of above-mentioned sealing film 9, by that will seal 9 sets of film in 14 outer surface of ring body, with ring
Rib 15 matches, and ring rib 15 is navigated to two annular groove positions of semi-open type shell 1, then adds to ring body 14 and ring rib 15
Heat makes its expansion, the sealing film 9 of outer surface is headed into two annular grooves, sealing film 9 is closely matched by glue with groove wall surface
After being combined, being cooled to ring body 14 can be taken out, and sealing film mounting ring 13 is taken out from measurement chamber 4.
The reference pressure chamber 3 is sequentially connected with the first two position three-way valve 7 and third two position three-way valve 11, and measurement chamber 4 connects
Have the second two position three-way valve 8, air pump 2 by check valve 6 respectively with third two position three-way valve 11, the second two position three-way valve 8 and solid
Determine chamber 10 to be connected.
When measurement, finger protrudes into measurement chamber 4, opens air pump 2, and gas enters measurement chamber 4, reference pressure chamber 3 and lock chamber
10, lock chamber 10 inflate after fixed finger, the vibration of 12 feedback air wave of differential pressure pickup, carry out signal modem,
Pulse wave signal is obtained after amplification, filtering.After measurement, the gas of three chambers is discharged, finger is taken out from measurement chamber 4.
Compared with prior art, the present apparatus can exclude the extraneous factors such as temperature and pressure interference, no baseline drift, directly
Vibration by detecting air wave obtains the waveform of pulse wave, to improve the accuracy of measurement data；Meanwhile it can basis
The diastolic pressure characteristic of different crowd group selects suitable air pressure section, excludes everyone special individual factor to experimental result
The influence of generation；Assembling process of products is simple, greatly solves the problems, such as that Product Assembly yield rate is not high, cost is relatively low；Directly
The vibration characteristics for connecing measurement air wave eliminates rubber film because permanent can using physical characteristics such as itself coefficient of elasticity of
Can change the influence generated to experimental result.To sum up some, technique can greatly reduce some uncorrelated factors
Influence to experiment improves the accuracy and confidence level of measurement data.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the utility model principle and objective with
Different modes carries out local directed complete set to it, and the protection scope of the utility model is subject to claims and not by above-mentioned specific
Implementation is limited, and each implementation within its scope is by the constraint of the utility model.
Claims (5)
1. a kind of vapour-pressure type finger pulse measurement device characterized by comprising semi-open type shell, cylindrical slider, air pump
And differential pressure pickup, in which: sliding block coaxial arrangement is in semi-open type shell, and inner wall is equipped with annular at semi-open type shell aperture
Film is sealed, sealing film and semi-open type outer casing inner wall, which are formed, accommodates gas with the annular lock chamber of fixed finger, differential pressure pickup
It is connected respectively with reference pressure chamber and measurement chamber, air pump interlinks with reference pressure chamber, measurement chamber and lock chamber respectively.
2. vapour-pressure type finger pulse measurement device according to claim 1, characterized in that the sliding block outer peripheral surface and half
Sealing ring is equipped between opening outer casing inner wall.
3. vapour-pressure type finger pulse measurement device according to claim 2, characterized in that the reference pressure chamber is successively
It is connected with the first two position three-way valve and third two position three-way valve, measurement chamber is connected with the second two position three-way valve, and air pump passes through check valve point
It is not connected with third two position three-way valve, the second two position three-way valve and lock chamber.
4. vapour-pressure type finger pulse measurement device according to claim 3, characterized in that in the semi-open type shell
Wall is equipped with two annular grooves, and sealing film axial ends is individually fixed in annular groove.
5. vapour-pressure type finger pulse measurement device according to claim 4, characterized in that the sealing film axial ends
Gluing is in annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721425370.5U CN208492072U (en) | 2017-10-31 | 2017-10-31 | Vapour-pressure type finger pulse measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721425370.5U CN208492072U (en) | 2017-10-31 | 2017-10-31 | Vapour-pressure type finger pulse measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208492072U true CN208492072U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721425370.5U Active CN208492072U (en) | 2017-10-31 | 2017-10-31 | Vapour-pressure type finger pulse measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107692983A (en) * | 2017-10-31 | 2018-02-16 | 上海中嘉衡泰医疗科技有限公司 | Vapour-pressure type finger pulse measurement device |
-
2017
- 2017-10-31 CN CN201721425370.5U patent/CN208492072U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107692983A (en) * | 2017-10-31 | 2018-02-16 | 上海中嘉衡泰医疗科技有限公司 | Vapour-pressure type finger pulse measurement device |
| CN107692983B (en) * | 2017-10-31 | 2024-04-05 | 上海中嘉衡泰医疗科技有限公司 | Pneumatic finger pulse measuring device |
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