CN105640593A - Elasticity measurement device for measuring elastic medium - Google Patents
Elasticity measurement device for measuring elastic medium Download PDFInfo
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- CN105640593A CN105640593A CN201410659952.4A CN201410659952A CN105640593A CN 105640593 A CN105640593 A CN 105640593A CN 201410659952 A CN201410659952 A CN 201410659952A CN 105640593 A CN105640593 A CN 105640593A
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Abstract
The invention provides an elasticity measurement device for measuring an elastic medium. Starting of the device can be controlled through pressure. The elasticity measurement device includes at least one ultrasonic transducer, a spring with a fixed elastic coefficient, a position sensor for detecting the displacement, an actuator for triggering the device, an electric actuator for generating instantaneous low-frequency impulse wave, and a signal generator connected with the position sensor and used for sending a starting signal, and a switch for triggering the electric actuator. Compared with the prior art, the elasticity measurement device has the advantage that: starting of the measurement device can be controlled through the pressure, and in this way, it is ensured that the elasticity measurement device works in an optimum pressure range.
Description
Technical field
The present invention relates to a kind of elasticity measuring device for measuring visco-elasticity medium. More specifically, it relates to the elasticity measuring device of a kind of startup carrying out control device by pressure size.
Background technology
Medically in order to determine that the Best Times of hepatitis treatment is it needs to be determined that the fibrosis at liver position, this fibrosis may be that the chronic hepatitis caused due to alcohol, virus or other reason causes, and fibrosis can obtain by measuring the elasticity at corresponding position.
The international patent application W0/2004/016176 proposed by the applicant of the application before propose a kind of for measuring the elastic device of human or animal's organ, comprising: with at least one contact mechanism, at least one position transducer of ultrasonic transducer and be fixed to ultrasonic transducer and the controlled electric actuator of instantaneous low-frequency pulse can be produced. The low-frequency pulse produced by electric actuator guides shearing wave to propagate in tissue, and the speed dependent of shearing wave is in the elasticity of organ-tissue. Therefore can calculate the elasticity of tested organ-tissue by measuring the speed of shearing wave thus nondestructively diagnose the pathology situation of organ. It is used in particular for the diagnosis and detection of hepatopathy.
But, the device of this earlier application may need special training and experience could obtain good measurement numerical value in actual use, major cause is that needing to apply suitable pressure when this device is acted on human body could obtain desirable measurement numerical value, and pure operation manually can not ensure the executed stressed pre-determined range that is stabilized in, if device probe too gently can cause shearing wave transmission less than liver with regard to deep fades with the pressure of patient's skin surface, if and device head and patient's organ pressure can allow patient compare too greatly to feel bad, it is desirable to propose a kind of mechanism that can accurately control the pressure that this measuring apparatus applies.
Summary of the invention
The present invention provides a kind of elasticity measuring device that can solve the problem, and described device is applied, by detection, the startup that pressure size carrys out control device, and described device comprises the contact with at least one ultrasonic transducer, for generation of ultrasonic vibration;Electric actuator, it is connected to described ultrasonic transducer, for generation of instantaneous low frequency pulse wave; Pressure-detecting device, for detecting the pressure that object to be measured is applied by described contact; For triggering the starter gear of described electric actuator; Signal generator, sends initiating signal for the pressure detected at described pressure-detecting device when pre-determined range, and wherein when described signal generator sends initiating signal, described starter gear could trigger the work of described electric actuator.
Compared with prior art, technical scheme tool provided by the invention is adopted to have the following advantages: the startup opportunity being carried out control and measure device by detecting pressure size, it is ensured that measuring apparatus is operated in the most suitable pressure range.
Accompanying drawing explanation
By reading with reference to detailed description non-limiting example done that the following drawings is done, the other features, objects and advantages of the present invention will become more obvious.
Fig. 1 is the schematic diagram of test set according to an embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail.
The example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish. It is exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and limitation of the present invention can not be interpreted as. Disclosing hereafter provides many different embodiments or example is used for realizing the different structure of the present invention. In order to simplify disclosing of the present invention, hereinafter parts and setting to specific examples are described. Certainly, they are only example, and object is not restriction the present invention. In addition, the present invention can in different example repeat reference numerals and/or letter. This kind repeats to be to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting. In addition, various specific technique that the present invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.
The present invention provides a kind of elasticity measuring device for measuring visco-elasticity medium. Below, method Fig. 1 forming elasticity measuring device by one embodiment of the present of invention is specifically described. As shown in Figure 1, elasticity measuring device provided by the present invention comprises:
With the contact of at least one ultrasonic transducer 1, for sending ultrasonic wave. When measuring, the contact of described ultrasonic transducer 1 with visco-elasticity medium (such as, human body skin) contact, the contact of described ultrasonic transducer can vertically moving along the housing 7 of described elasticity measuring device, there is a spring 2 between housing 7 and contact, when manually human body being applied pressure by housing 7 through contact, the spring 2 between housing 7 and contact is compressed. Can calculate, relative to the displacement of housing and the coefficient of elasticity of spring 2, the pressure that contact is applied on human body by measuring contact.
Preferably, described ultrasonic transducer by one protect head indirectly contact with visco-elasticity medium to be measured, and described ultrasonic transducer and its protect head have one extension shape, to increase the contact area with testing medium. Such as rectangular, the oval or shape that other is similar.
The contact of described ultrasonic transducer 1 is connected along axis with electric actuator 4.When measuring, described electric actuator 4 applies a low frequency shock response. The ultrasonic wave one that described low frequency shock response and ultrasonic transducer produce coexists visco-elasticity medium to be measured.
Accordingly, the elasticity measuring device of the present invention also comprises a ultrasonic acquisition assembly (not shown), the ultrasonic meeting produced due to ultrasonic transducer is reflected by the particle of distribution in visco-elasticity medium to be measured, can be measured, by the ultrasonic wave signal of reflection, the shearing wave effect bottom offset that in visco-elasticity medium, each several part produces in low frequency shock response by ultrasonic acquisition component detection, thus measure the transmission speed of shearing wave. The elasticity of testing medium is calculated according to shearing wave transmission speed.
The elasticity measuring device of the present invention also comprises position transducer 3, and it is connected with spring by a certain rigid media, or is directly connected with the spring the other end, is obtained the flexible amount of described spring by the displacement of detection springs end. And calculate the pressure that human body now bears accordingly, when this force value reaches certain limit, position transducer 3 is just transferred to signal generator 5 one initiating signals.
In an embodiment of the present invention, it is 4-8N that triggering position transducer 3 sends the pressure range of initiating signal, and this is the typical scope determined according to tested body type, such as, for children, selects 1-8N, for adiposis patient, selects 4-10N. This pressure range is selected to be because if device head and patient's organ pressure too gently can cause ripple to transmit less than liver, and if device head and patient's organ pressure are too big patient can be allowed to compare feel bad. And shearing wave can be made in this pressure range liver can be transferred to when patient feels comfortable. In other embodiments, those skilled in the art can regulate this pressure range voluntarily according to practical application request.
After receiving the initiating signal that position transducer 3 transmits, signal generator 5 sends one and measures ready signal, can start electric actuator 4 by operating switch 6 for pointing out user and send low-frequency pulse and perform measurement. At this moment user presses switch 6 and just can manually start electric actuator 4. Otherwise, signal generator 5 do not send measure ready signal time, press switch 6 and can not start electric actuator 4 and send low-frequency pulse, this ensure that the accuracy of measurement and consistence.
Described electric actuator 4 can also be automatic triggering, namely position transducer 3 detect apply suitable pressure time, electric actuator 4 automatically sends low-frequency pulse and measures.
The ready signal of described measurement can be the signal that the people such as the sound by the generation such as hummer, laser diode, light easily observes. If adopting the mode of control automatically, initiating signal being used between position transducer 3 starting switch 6, switch automatically starts electric actuator and sends low-frequency pulse after receiving this initiating signal. The ready signal of described measurement can be the change of color, such as, turn into green expression from redness and measure ready. The ready signal of described measurement can also be displayed on screen, can conveniently check that when user watches the parameter of screen whether the pressure range of applying is suitable.
Although the present invention detects, by the compression of spring and position transducer measuring spring draught, the pressure that ultrasonic contact acts on measured medium, in fact other pressure-detecting devices can also be adopted, the such as components and parts such as piezoelectric transducer, voltage dependent resistor, for being directly converted to electrical signal by pressure.
Elasticity measuring device provided by the present invention carrys out the startup of control and measure device by pressure size, it is ensured that measuring apparatus is operated in the most suitable pressure range.
Although illustrating in detail about example embodiment and advantage thereof, it should be understood that when the protection domain that the spirit and claims that do not depart from the present invention limit, it is possible to these embodiments are carried out various change, substitutions and modifications. For other examples, the those of ordinary skill of this area should be easy to understand while keeping in protection domain of the present invention, and the order of processing step can change.
In addition, the technique of specific embodiment, mechanism, manufacture, material composition, means, method and the step that the range of application of the present invention is not limited in specification sheets to describe. From the disclosure of the present invention, those of ordinary skill as this area will easily be understood, for the technique, mechanism, manufacture, material composition, means, method or the step that have existed or be about to develop at present later, wherein they perform the function substantially identical with the corresponding embodiment of the present invention's description or obtain substantially identical result, can they be applied according to the present invention. Therefore, claims of the present invention are intended to be included in its protection domain these technique, mechanism, manufacture, material composition, means, method or step.
Claims (6)
1., for measuring an elasticity measuring device for visco-elasticity medium, described device comprises:
With the contact of at least one ultrasonic transducer (1), for generation of ultrasonic wave;
Electric actuator (4), it is connected to described ultrasonic transducer, for generation of low frequency pulse wave;
Pressure-detecting device (2,3), for detecting the pressure that object to be measured is applied by described contact;
For triggering the starter gear (6) of described electric actuator (4);
Signal generator (5), pressure for detecting at described pressure-detecting device sends initiating signal when pre-determined range, wherein when described signal generator sends the ready signal of measurement, described starter gear (6) could trigger described electric actuator (4) work.
2. device according to claim 1, it is characterised in that, described pressure-detecting device (2,3) comprises elastic force apparatus (2) and position transducer (3);
The two ends of described ultrasonic transducer (1) contact with visco-elasticity medium and described elastic force apparatus (2) respectively, and the pressure being applied on object to be measured by conducting causes the flexible motion of elastic force apparatus.
3. device according to claim 2, it is characterized in that, described position transducer (3) detects out the flexible amount of described elastic force apparatus, and described signal generator (5) initiating signals it are transferred to when reaching certain limit, the flexible amount of described elastic force apparatus is relevant to the pressure that object to be measured is applied by described measuring apparatus.
4. device according to claim 1 or 3, it is characterised in that, when the pressure magnitude range of ultrasonic transducer is 4N-8N by object to be measured, described signal generator sends measures ready signal.
5. device according to claim 1, it is characterised in that, described electric actuator is connected with ultrasonic transducer.
6. device according to claim 1, it is characterised in that, wherein also comprise a ultrasonic acquisition assembly, for gathering by the ultrasonic signal of visco-elasticity medium internal reflection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659952.4A CN105640593B (en) | 2014-11-18 | 2014-11-18 | It is a kind of for measuring the elasticity measuring device of viscoelastic medium |
| TW104137869A TWI562765B (en) | 2014-11-18 | 2015-11-17 | Elasticity measuring device for measuring a viscoelastic medium |
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| CN201410659952.4A CN105640593B (en) | 2014-11-18 | 2014-11-18 | It is a kind of for measuring the elasticity measuring device of viscoelastic medium |
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| CN105640593A true CN105640593A (en) | 2016-06-08 |
| CN105640593B CN105640593B (en) | 2019-05-28 |
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| CN106264605A (en) * | 2016-08-04 | 2017-01-04 | 无锡海斯凯尔医学技术有限公司 | Vltrasonic device and the device of generation mechanical vibration |
| CN106344070A (en) * | 2016-11-03 | 2017-01-25 | 乐普（北京）医疗器械股份有限公司 | Probe and detection device |
| CN108918288A (en) * | 2018-07-23 | 2018-11-30 | 镇江立达纤维工业有限责任公司 | A kind of panel stiffness detection device |
| CN109316207A (en) * | 2018-10-15 | 2019-02-12 | 聚融医疗科技(杭州)有限公司 | A kind of breast ultrasound scanning system and method |
| CN109875608A (en) * | 2019-01-30 | 2019-06-14 | 清华大学 | Elastograph imaging method |
| CN110520055A (en) * | 2017-03-27 | 2019-11-29 | 法国爱科森有限公司 | For measuring the viscoelastic device and method of viscoelastic medium |
| CN111886496A (en) * | 2017-12-01 | 2020-11-03 | 海德拉运动有限公司 | Measuring fluid properties by reflection of vibration waves |
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| KR102235743B1 (en) * | 2016-08-04 | 2021-04-01 | 우시 히스키 메디칼 테크놀로지스 컴퍼니., 리미티드. | Ultrasonic device and mechanical vibration generating device |
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| CN111886496B (en) * | 2017-12-01 | 2024-04-30 | 海德拉运动有限公司 | Measuring fluid properties by reflection of vibration waves |
| CN108918288A (en) * | 2018-07-23 | 2018-11-30 | 镇江立达纤维工业有限责任公司 | A kind of panel stiffness detection device |
| CN109316207A (en) * | 2018-10-15 | 2019-02-12 | 聚融医疗科技(杭州)有限公司 | A kind of breast ultrasound scanning system and method |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI562765B (en) | 2016-12-21 |
| TW201618721A (en) | 2016-06-01 |
| CN105640593B (en) | 2019-05-28 |
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Effective date of registration: 20191219 Address after: A405-1, Nanshan medical equipment Industrial Park, 1019 Nanhai Avenue, Shekou, Nanshan District, Shenzhen, Guangdong Province Patentee after: Shenzhen echo Medical Equipment Co., Ltd Address before: Ba Li Patentee before: Echosens SA |