CN202942097U - Flexible pulse condition detecting probe based on grapheme capacitance microarray - Google Patents
Flexible pulse condition detecting probe based on grapheme capacitance microarray Download PDFInfo
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- CN202942097U CN202942097U CN 201220380869 CN201220380869U CN202942097U CN 202942097 U CN202942097 U CN 202942097U CN 201220380869 CN201220380869 CN 201220380869 CN 201220380869 U CN201220380869 U CN 201220380869U CN 202942097 U CN202942097 U CN 202942097U
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Abstract
The utility model belongs to the field of biomedical detecting instruments and mainly relates to a flexible pulse condition detecting probe based on a grapheme capacitance microarray. The flexible pulse condition detecting probe based on the grapheme capacitance microarray comprises a probe rigid main body, a flexible silica gel liner, a pressure sensing flexible thin film, a fastener and an elastic connecting piece, wherein the fastener and the elastic connecting piece are used for fixing the pressure sensing flexible thin film, a plane end of the flexible silica gel liner is closely bonded to the probe rigid main body, the pressure sensing flexible thin film is made of grapheme capacitance microarray flexible thin film, the bottom layer of the pressure sensing flexible thin film is closely attached to a cambered surface of the flexible silica gel liner, the fastener and the elastic connecting piece respectively fix two ends of the pressure sensing flexible thin film on two sides of the probe rigid main body, one end of the pressure sensing flexible thin film is closely fixed and the other end of the pressure sensing flexible thin film can expand and contract along with the pressure change of the contact surface. According to the pulse condition detecting probe, first, the spatial resolution of pulse condition information is obviously promoted, second, the pressure measuring range of the pulse condition detecting probe is expanded, the upper limit value of the pressure measuring range of the pulse condition detecting probe reaches 2.5 kilograms, and third, the stability and the durability of the pulse condition detecting probe are promoted. The structural characteristics enable the pulse condition detecting probe to achieve the function of doctor finger pump intimation preferably.
Description
Technical field
This utility model belongs to biomedical detecting instrument field, relates generally to a kind of pulse condition detection device.
Technical background
Pulse-taking is one of diagnostic method important and most characteristic in China's traditional medicine, and it is an important evidence of Chinese medical discrimination, is extremely important in the tcm clinical practice diagnosis.From the 1950's, the scientific worker of China just is devoted to the research of objectification of pulse examination, probe into the substitutive characteristics of pulse condition, by setting up characteristic model, structure hemodynamics equation, draw the mode such as pulse condition figure and analyze and research, some useful achievements have been obtained at aspects such as the formation mechanism of pulse condition and physiological and pathological meanings thereof.
Carrying abundant human health status information in pulse, traditional Chinese medical science feeling the pulse diagnosis is that the sensors such as the sense of touch that relies on doctor's finger tip, pressure sensation, vibration sense are surveyed pulse condition part and Global Information, the pulse condition information that modern Sphygmology is experienced finger tip usually is decomposed into: eight dimensional characteristics such as arteries and veins position, arteries and veins power, pulse frequency, arteries and veins rule, pulsewidth, arteries and veins length, fluency, tensity, identify 28 common arteries and veins of the traditional Chinese medical science by analyzing this octuple information.Therefore, how effectively to obtain true comprehensively high-quality pulse condition information, be that objective pulse examination is the most basic, one of most critical and don't avoidable difficult problem.
Two during the last ten years, the development of pulse condition checkout equipment has obtained many-sided technological progress, but do not obtain substantial breakthrough on the core technology index, still there are generally some comparatively serious deficiency and problems, the one, the spatial resolution of pulse image sensor is too low, the pulse condition information amount wretched insufficiency that collects causes it inadequate to the accuracy of detection of the indexs such as arteries and veins length, pulsewidth, fluency, tensity.The most electropulsograph is mono-contact type, can only gather one road signal on a certain position of cun,guan,chi, and this kind equipment can't detect the information such as pulsewidth and arteries and veins length at all; Although also there is partial array formula pulse detecting probe can gather simultaneously multiple signals, but or because its integrated level is not high, perhaps due to its core material intrinsic machinery or electromagnetic property restriction, and make single section probe laterally with vertically on the pressure sensitive cells quantity that distributes still limited, the spatial resolution of its pulse condition information is greater than 1.5mm.It is 201010508173.6,200610119382.5,200820075107.2 pulse condition checkout equipment as number of patent application, its spatial resolution is more than or equal to 2mm, if the minimum requirements by the Chinese medicine pulse diagnosis designs, need at least 45 road signals, above-mentioned three kinds of sensors need 90 data wires at least, as designing by 100 the tunnel, need 200 data wires, so many data wire makes the cumulative volume of sensor be difficult to do little, also brings the other problem of the aspects such as stability simultaneously.Clinical experiment shows, if the spatial resolution of pulse detecting probe is greater than 0.8mm, system is long to arteries and veins, accuracy of detection pulsewidth is too low and make arteries and veins type (as thready pulse, scholar arteries and veins, faint pulse, weak pulse, tympanic pulse, hollow pulse, tense pulse etc.) that it has the important clinical diagnostic value to part when identifying interpretation, and often accuracy rate is too low and very easily cause mistaken diagnosis.These factors are restricting applying of pulse condition checkout equipment.
The 2nd, stability, the ruggedness of sensor are lower.Existing array pulse detecting probe major part by structure independently the separate type pressure sensitive cells combine by mechanical connecting element, because of its structure too complicated meticulous, connect fragility and cause, its stability, impact resistance, ruggedness is on the low side, some array-type sensor (as the PVDF thin film sensor) stability better, but resolution is too low again, can not adapt to preferably real clinical setting.
The 3rd, the pressure range ability of pulse detecting probe not enough (usually between 0～1 kilogram) is difficult to practical requirement sometimes.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art: the one, the spatial resolution of pulse-tracing collection information is significantly promoted, and this index is met clinical needs fully; The 2nd, the pressure range ability of expansion pulse detecting probe; The 3rd, stability and the ruggedness of raising pulse detecting probe.
For this reason, this utility model adopts following technical scheme:
A kind of flexible pulse detecting probe based on Graphene electric capacity microarray, mainly comprise probe rigid bodies (10), flexible silica gel arc liner (9), pressure sensing fexible film (8), securing member (12) and Flexible Connector (11), as shown in Figure 6.The planar ends of flexible silica gel arc liner (9) and probe rigid bodies (10) close adhesion; The bottom of pressure sensing fexible film (8) is close on the cambered surface of flexible silica gel arc liner (9); Securing member (12) and elastic component (11) are separately fixed at the two ends of pressure sensing fexible film (8) left and right sides of probe rigid bodies (10), and wherein an end is closely fixing, and the other end can stretch with the pressure variation of contact surface.This microarray flexible structure has realized that preferably bionical doctor refers to the function of abdomen.
As shown in Figure 1, in above-mentioned pulse detecting probe, the pressure sensing fexible film is made of five layer film materials, be followed successively by from top to bottom silica gel top layer (1), multiple graphene layers (2), polyester plastics layer (3), metal film layer (4), polyester plastics bottom (5), wherein topsheet surface also is distributed with the little contact of silica gel (6) of MxN array; Second layer graphene film cuts into M or N bar graphene film; Be etched with the circular hole of MxN array in the 3rd layer; Circular hole in the little contact of silica gel that topsheet surface distributes and the 3rd layer is Accurate align one by one; The 4th layer of metallic film cuts into corresponding N or M strip metal thin slice, and leaves certain interval between each contiguous slices in second and the 4th layer, and insulated from each other, the cut direction of double-layer films is orthogonal; Five layer film materials are combined closely and have been consisted of condenser type microarray pressure sensing fexible film, as Fig. 1, Fig. 4, shown in Figure 5; The pressure sensing fexible film is being laterally 0.35mm～0.4mm with information space resolution longitudinally.
Its measuring principle is, when External Force Acting arrives the capacitor both sides, ground floor silicon rubber film and the turning-in of second layer multi-layer graphene thin film, the spacing of second layer multi-layer graphene and metallic film can change, thereby electric capacity is changed, sensed pressure changes by the electric circuit inspection capacitance variations, as shown in Figure 2 and Figure 3.
Graphene has excellent mechanics, calorifics and electric property.It is not only in known materials the thinnest a kind of, also very firmly tough and tensile, if make common plastics film package bag (thickness is 100 nanometers approximately) with Graphene, it will bear the article of about two tons of weights so; Wherein the movement velocity of electronics has reached 1/300 of the light velocity, and considerably beyond the movement velocity of electronics in general conductor, it is the present material of resistivity minimum in the world.Because Graphene has excellent mechanics, calorifics, electrical properties, so the stability of this pressure sensing fexible film and ruggedness be far away higher than existing array pressure transducer, and its pressure range ability also has significantly and improves; In addition, the sensitivity of Graphene electric capacity microarray fexible film is also fine, and the pressure that can little mosquito of perception falls up changes.
As Fig. 4, shown in Figure 5, the second layer of this pressure sensing fexible film and the 4th layer adopt steric structure cleverly, and holding wire is significantly reduced; The electrode of thin film is divided into two groups, and one group connects Graphene, and another organize connection metal, and the electrodeplate on every layer equates with the slice numbers of this layer film, so the electrode of popping one's head in adds up to M+N; Can monitor the variation of each probe unit electric capacity by the various combinations of this two arrays of electrodes, in Fig. 5, A1-B1 can monitor S1, and A1-B3 can detect S7, and other capacitance variations by that analogy.The sensor of 20 * 20 arrays only needs 40 holding wires, be that 201010508173.6,200610119382.5,200820075107.2 pulse condition checkout equipment is compared with number of patent application, holding wire has reduced an order of magnitude at least, thereby the sensor spatial resolution was significantly improved, that volume can be done again is very little, can realize that also three ones of cun,guan,chis detect simultaneously and can adapt to most of crowd.Circuit part mainly comprises two modules, and one is scanning switch, and another is that electric capacity is surveyed module, with the sweep speed of a KHz, and load signal measurement electric capacity that can 100,000 hertz, then be converted to pressure signal.
Description of drawings
Fig. 1 is the composition structural representation of pressure sensing fexible film in this utility model.
In figure: 1, silica gel top layer, 2, multiple graphene layers, 3, the polyester plastics layer, 4, metal film layer, 5, the polyester plastics bottom, 6, silica gel little contact, 7, circular hole.
Fig. 2, Fig. 3 are the pressure measxurement schematic diagram of pressure sensing fexible film in this utility model.
Fig. 4, Fig. 5 adopt the pressure sensing fexible film perspective view of 3x3 array in this utility model.
Fig. 6 is the composition structure chart of this utility model specific embodiment.
In figure: 8, pressure sensing fexible film, 9, flexible silica gel arc liner, 10, the probe rigid bodies, 11, Flexible Connector, 12, securing member.
The specific embodiment
As shown in Figure 6, in embodiment of the present utility model, the pressure sensing fexible film is the Graphene electric capacity of integrated 20x20 array in the zone of 8x8 square millimeter, amounts to 400 pressure sensitive cells; Pressure sensing fexible film each layer thickness from top to bottom is respectively 10 microns, 5 nanometers, 5 microns, 50 nanometers, 50 microns.
Switch pressure sensitive cells by a scanning switch module in the present embodiment, and survey module with electric capacity and measure electric capacity, wherein the sweep speed of scanning switch is a KHz, and measure electric capacity with the load signal of 100,000 hertz, then will send into computer after electric capacity microarray measurement data digitized, convert two-dimensional pressure matrix numerical value to, the two-dimensional pressure distributed data of these fluctuating signals of continuous acquisition, obtain visual three-dimensional pulse condition Real-time and Dynamic image, two-dimensional pressure data analysis to these pulse signals is processed, and provides the arteries and veins name sentence read result of the pulse condition of surveying.
Claims (6)
1. flexible pulse detecting probe based on Graphene electric capacity microarray, mainly comprise probe rigid bodies (10), flexible silica gel arc liner (9), pressure sensing fexible film (8), Flexible Connector (11), securing member (12), it is characterized in that: the planar ends of flexible silica gel arc liner (9) and probe rigid bodies close adhesion, the polyester plastics bottom (5) of pressure sensing fexible film (8) is close on the cambered surface of flexible silica gel arc liner (9), securing member (12) is fixed on an end of pressure sensing fexible film (8) on the right flank of rigid bodies (10), Flexible Connector (11) is connected to the other end of pressure sensing fexible film on rigid bodies (10) left surface.
2. pulse detecting probe as claimed in claim 1, it is characterized in that: pressure sensing fexible film (8) is made of five layer film materials, is followed successively by from top to bottom silicone rubber top layer (1), multiple graphene layers (2), polyester plastics layer (3), metal film layer (4), polyester plastics bottom (5).
3. pulse detecting probe as claimed in claim 1, it is characterized in that: the topsheet surface of pressure sensing fexible film also is distributed with the little contact of silica gel (6) array of MxN; Be etched with circular hole (7) array of MxN in the 3rd layer; Align on the direction of vertical thin-film one by one with circular hole in the 3rd layer in the little contact of topsheet surface distributes silica gel.
4. pulse detecting probe as claimed in claim 3, it is characterized in that: the pressure sensing fexible film is according to default array way MxN, its second layer film cutting is slit into M or N bar graphene platelet, four-level membrane cuts into corresponding N or M strip metal thin slice, leave certain interval between the contiguous slices of every layer, insulated from each other, the cut direction of this double-layer films is orthogonal.
5. pulse detecting probe as claimed in claim 4, it is characterized in that: the electrode of pressure sensing fexible film is divided into two groups, and one group connects graphene platelet, another group connection metal thin slice, the electrodeplate on every layer equates with the slice numbers of this layer, electrode adds up to M+N.
6. pulse detecting probe as claimed in claim 4 is characterized in that: the pressure sensing fexible film is being laterally 0.35mm～0.4mm with information space resolution longitudinally.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220380869 CN202942097U (en) | 2012-08-03 | 2012-08-03 | Flexible pulse condition detecting probe based on grapheme capacitance microarray |
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| CN 201220380869 CN202942097U (en) | 2012-08-03 | 2012-08-03 | Flexible pulse condition detecting probe based on grapheme capacitance microarray |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104545871A (en) * | 2015-01-29 | 2015-04-29 | 重庆墨希科技有限公司 | Graphene-based pulse and heart rate meter |
| CN106974628A (en) * | 2017-04-21 | 2017-07-25 | 苏州攀特电陶科技股份有限公司 | Multichannel pulse image sensor and harvester |
| WO2018039939A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Capacitive pressure sensor and fabrication method thereof |
| CN108461624A (en) * | 2018-02-06 | 2018-08-28 | 山东科技大学 | The bionical finger tip Touch-Pressure of silica gel feels Sensitive Apparatus |
| CN113679388A (en) * | 2021-09-18 | 2021-11-23 | 广州瑞科苏医疗智能科技有限公司 | Array type flexible tongue pressure sensor |
| CN114224307A (en) * | 2021-11-15 | 2022-03-25 | 深圳信息职业技术学院 | Flexible sensing array assembly, manufacturing method and pulse condition monitoring system |
| CN114544064A (en) * | 2022-01-17 | 2022-05-27 | 江苏科技大学 | Resonant graphene gas pressure sensor |
-
2012
- 2012-08-03 CN CN 201220380869 patent/CN202942097U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104545871A (en) * | 2015-01-29 | 2015-04-29 | 重庆墨希科技有限公司 | Graphene-based pulse and heart rate meter |
| WO2018039939A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Capacitive pressure sensor and fabrication method thereof |
| CN108291845A (en) * | 2016-08-30 | 2018-07-17 | 华为技术有限公司 | Capacitance pressure transducer, and preparation method thereof |
| CN106974628A (en) * | 2017-04-21 | 2017-07-25 | 苏州攀特电陶科技股份有限公司 | Multichannel pulse image sensor and harvester |
| CN108461624A (en) * | 2018-02-06 | 2018-08-28 | 山东科技大学 | The bionical finger tip Touch-Pressure of silica gel feels Sensitive Apparatus |
| CN108461624B (en) * | 2018-02-06 | 2021-09-24 | 山东科技大学 | Silica gel bionic fingertip touch-pressure sensation sensitive device |
| CN113679388A (en) * | 2021-09-18 | 2021-11-23 | 广州瑞科苏医疗智能科技有限公司 | Array type flexible tongue pressure sensor |
| CN113679388B (en) * | 2021-09-18 | 2024-03-08 | 广州瑞科苏医疗智能科技有限公司 | Array type flexible tongue pressure sensor |
| CN114224307A (en) * | 2021-11-15 | 2022-03-25 | 深圳信息职业技术学院 | Flexible sensing array assembly, manufacturing method and pulse condition monitoring system |
| CN114544064A (en) * | 2022-01-17 | 2022-05-27 | 江苏科技大学 | Resonant graphene gas pressure sensor |
| CN114544064B (en) * | 2022-01-17 | 2023-11-21 | 江苏科技大学 | Resonant graphene gas pressure sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Guo Fusheng Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20160803 |