EP3076876A1 - Méthode d'évaluation in vivo de l'état physiopathologique d'un tissu biologique et dispositif associé - Google Patents
Méthode d'évaluation in vivo de l'état physiopathologique d'un tissu biologique et dispositif associéInfo
- Publication number
- EP3076876A1 EP3076876A1 EP14825411.3A EP14825411A EP3076876A1 EP 3076876 A1 EP3076876 A1 EP 3076876A1 EP 14825411 A EP14825411 A EP 14825411A EP 3076876 A1 EP3076876 A1 EP 3076876A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- force
- joint
- ultrasound
- displacement
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000011156 evaluation Methods 0.000 title claims description 24
- 238000001727 in vivo Methods 0.000 title description 7
- 238000002604 ultrasonography Methods 0.000 claims abstract description 60
- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000006073 displacement reaction Methods 0.000 claims description 71
- 210000001519 tissue Anatomy 0.000 claims description 69
- 210000002435 tendon Anatomy 0.000 claims description 42
- 239000000523 sample Substances 0.000 claims description 33
- 210000003205 muscle Anatomy 0.000 claims description 16
- 210000001361 achilles tendon Anatomy 0.000 claims description 9
- 210000003041 ligament Anatomy 0.000 claims description 6
- 210000003423 ankle Anatomy 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000013500 data storage Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000012285 ultrasound imaging Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 210000000629 knee joint Anatomy 0.000 claims description 4
- 210000000811 metacarpophalangeal joint Anatomy 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 210000005036 nerve Anatomy 0.000 claims description 4
- 230000001991 pathophysiological effect Effects 0.000 claims description 4
- 238000012805 post-processing Methods 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 210000002310 elbow joint Anatomy 0.000 claims description 3
- 210000000878 metatarsophalangeal joint Anatomy 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 33
- 230000001575 pathological effect Effects 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 description 19
- 208000000491 Tendinopathy Diseases 0.000 description 14
- 239000004744 fabric Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 230000007170 pathology Effects 0.000 description 7
- 210000000544 articulatio talocruralis Anatomy 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 210000003127 knee Anatomy 0.000 description 4
- 208000023835 Tendon disease Diseases 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000002059 diagnostic imaging Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 230000003902 lesion Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 102000008186 Collagen Human genes 0.000 description 2
- 108010035532 Collagen Proteins 0.000 description 2
- 241000124008 Mammalia Species 0.000 description 2
- 208000023178 Musculoskeletal disease Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 229920001436 collagen Polymers 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001513 elbow Anatomy 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000002595 magnetic resonance imaging Methods 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 230000004118 muscle contraction Effects 0.000 description 2
- 230000003387 muscular Effects 0.000 description 2
- 210000000426 patellar ligament Anatomy 0.000 description 2
- 238000000554 physical therapy Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000002113 ultrasound elastography Methods 0.000 description 2
- 208000028571 Occupational disease Diseases 0.000 description 1
- 206010043248 Tendon rupture Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 239000012636 effector Substances 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- AEUTYOVWOVBAKS-UWVGGRQHSA-N ethambutol Natural products CC[C@@H](CO)NCCN[C@@H](CC)CO AEUTYOVWOVBAKS-UWVGGRQHSA-N 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 210000000521 femorotibial joint Anatomy 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010988 intraclass correlation coefficient Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000037074 physically active Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000011155 quantitative monitoring Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000037078 sports performance Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Clinical applications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0048—Detecting, measuring or recording by applying mechanical forces or stimuli
- A61B5/0053—Detecting, measuring or recording by applying mechanical forces or stimuli by applying pressure, e.g. compression, indentation, palpation, grasping, gauging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4519—Muscles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4523—Tendons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4533—Ligaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4538—Evaluating a particular part of the muscoloskeletal system or a particular medical condition
- A61B5/458—Evaluating the elbow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4538—Evaluating a particular part of the muscoloskeletal system or a particular medical condition
- A61B5/4585—Evaluating the knee
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4538—Evaluating a particular part of the muscoloskeletal system or a particular medical condition
- A61B5/4595—Evaluating the ankle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient; User input means
- A61B5/742—Details of notification to user or communication with user or patient; User input means using visual displays
Definitions
- the present invention relates to a method for in vivo evaluation of the physiopathological state of a biological tissue located near a joint. More specifically, the present invention makes it possible to evaluate the mechanical properties of said biological tissue and their variations.
- the present invention also relates to a non-invasive medical device for the in vivo evaluation of the pathophysiological state of a biological tissue located near a joint.
- Musculoskeletal disorders are among the leading causes of pain and disability in adults. Generally related to hyper-use, these disorders are often associated with sports activities or professional activities. They are mainly attributed to occasional traumatic overload, as in the case of speed races, or repeated micro-traumas, as in the case of long distance races.
- Tendon diseases are an important part of musculoskeletal disorders. They can affect 30 to 50% of the physically active population. Among them, Achilles tendinopathy is particularly common in the male population of 30 to 50 years. When compared to the general population, the incidence of Achilles tendonopathy, also known as calcaneal tendinopathy, was measured at 2 per 1000 and 35% of cases would be related to sport. The incidence among top athletes is still much higher. Tendinopathy, which can be asymptomatic for a long time, affects the quality of life and the productivity of people for a long time. Achilles tendon ruptures usually occur on pathological tendons, and tendinopathies are often diagnosed a posteriori. In addition, healing of lesions tendinous is a complex and poorly known phenomenon that is accompanied by changes in mechanical properties: the scar tissue is thus often mechanically inferior to the original tissue.
- tendinopathies often asymptomatic, is currently late and the clinical diagnosis is then completed using medical imaging tests.
- Current techniques for the assessment of tendon diseases are mainly based on ultrasound and MRI (Magnetic Resonance Imaging). These imaging methods provide important morphological information on the condition of the tendon in static condition but do not provide, in standard practice, the tendon condition and its variations over time (ie in dynamic condition).
- the tendon is a dynamic structure par excellence because it allows the movement of the human body by connecting a muscle tissue to a bone structure.
- a tendon can thus be solicited statically, for example by isometric contraction of the muscle, or dynamically, for example by eccentric or concentric contraction of the muscle.
- a thorough knowledge of tendon diseases therefore requires to know the dynamic properties and not just the static properties of the tendon.
- some occult tendinopathies are not detectable through conventional imaging techniques. The aforementioned methods are also limited by the time required to acquire the images. There is currently no simple method, which can be used in clinical practice, to evaluate the physiopathological state of a tendon through these mechanical properties, which are known to be directly related to the state of health. and the tendon elongation capabilities.
- One of the objectives of the present invention is therefore to enable the clinician to obtain information on the physiopathological state of the Achilles tendon, by associating with the measurements made on the biological tissue using ultrasonic waves, the measurements of the stresses (force, stresses, displacement, deformation, ...) imposed on the articulation or undergone by the joint.
- the present invention makes it possible, by associating, over time, the ultrasonic measurements performed on the rope with the measurements of the stresses, to be able to predict the state of the rope outside the range. measurement.
- the present invention provides a non-destructive dynamic evaluation.
- the present invention makes it possible to have knowledge of the variation of the mechanical properties as a function of the stresses.
- the invention thus makes it possible to predict the evolution of the mechanical properties of the fabric as a function of the stresses.
- the measurement of the two parameters (solicitations and ultrasound parameters collected) makes it possible to overcome the knowledge of the state of tension.
- Another object of the invention is based on the ease of use, the ease of transport and the energy autonomy of the device implementing the method of the present invention. Indeed, there is currently no portable device, used daily in clinical practice, to know the physiopathological state of a biological tissue.
- the invention proposes to overcome this lack by providing a portable integrated device and easily transportable.
- the present invention thus makes it possible to characterize in vivo a biological tissue from a non-morphological but biomechanical point of view, in a non-invasive manner using a portable device that simultaneously makes it possible to measure the propagation parameters of a wave ultrasound through a tissue and measurement of strength and / or joint movement.
- the present invention is therefore particularly useful both for assisting in the diagnosis and management of tendon pathologies, but also for detecting and diagnosing said pathologies and monitoring the evolution of the pathophysiological state thanks to the knowledge of the mechanical properties of the tendon .
- the invention thus relates to a method for the non-invasive evaluation of the physiopathological state of a biological tissue located in the vicinity of a joint, comprising the emission of an ultrasound wave in said tissue, from a source of ultrasound, the simultaneous acquisition of at least one parameter extracted from the ultrasound signal received after propagation of the ultrasonic wave, and at least one data of force and / or articular displacement, and the processing of the information simultaneously acquired; said method not being an ultrasound imaging method.
- said evaluation method further comprises a first step of applying a force and / or a predefined articular displacement.
- said articulation is an articulation of the human body comprising a main degree of freedom, preferably said articulation is an elbow joint, a knee joint, an ankle joint, a metacarpophalangeal joint, an articulation metatarsal-phalangeal, or an interphalangeal joint.
- the biological tissue studied is a tendon, a muscle, a ligament, a nerve or the skin, preferably an Achilles tendon, a quadricipital tendon or a triceps brachii tendon.
- the processing of said simultaneously acquired data comprises the extraction of at least one ultrasound parameter chosen from the propagation velocity of the ultrasonic wave, the attenuation of the ultrasonic wave at the reception point of the ultrasound wave. wave, the amplitude of the ultrasonic wave at the point of reception of the wave, the frequency of the ultrasonic wave at the point of reception of the wave, or the modification of the frequency spectrum of the ultrasonic wave; and the correlation between said ultrasound parameter and the measured force and / or joint displacement data.
- the invention also relates to a device for evaluating the physiopathological state of a biological tissue located near a joint, allowing the implementation of the method according to the present invention.
- said evaluation device comprises:
- a means for measuring the force and / or the articular displacement such as, in a nonlimiting manner, an ergometer, a force sensor, a displacement sensor, an accelerometer or a dynamometer;
- an ultrasound probe comprising at least one emitting transducer and at least one receiving transducer
- said device further comprises means for applying a predetermined force and / or articular displacement, such as for example a jack, a hydraulic jack or a motor.
- said device comprises, in a portable, integrated and non-invasive manner, at least one means for measuring a force and / or an articular displacement, at least one ultrasound probe, at least one acquisition system simultaneous ultrasound data and force data and / or articular displacement, at least one processing system of said data and at least one autonomous energy source; an ultrasound probe being placed on the skin facing the biological tissue and a means for measuring a force and / or an articular displacement being located at the level of the requested joint.
- an emitting transducer and a receiving transducer are aligned along the axis of operation of the studied fabric.
- the acquisition and processing system comprises an acquisition card, a microprocessor, a data storage space, and at least one data processing software.
- the device further comprises a post-processing data display module and / or a data transmission means.
- Articleation to a primary degree of freedom refers to any articulation of the human body whose predominant movement includes a degree of freedom (eg the articulation of the elbow, ankle, knee, metacarpophalangeal, metatarsal-phalangeal, interphalangeal joints ).
- Articleation of the ankle refers to the articulation of the ankle or talo-crural joint that requires, among other things, during its operation, the Achilles tendon.
- Kee joint includes the femoro-patellar joint and the femoro-tibial joint, internal and external, and particularly requires, during its operation, the patellar ligament and the quadricipital tendon.
- Correlation within the meaning of the present invention, relates to the study of the relationship between two parameters; by means of a statistical study well known to those skilled in the art, and / or a graphical representation of one of the parameters as a function of the other, and / or by any other method that the person skilled in the art would deem appropriate.
- Concentric contraction refers to a contraction resulting in a controlled shortening of the muscle.
- Eccentric contraction refers to a contraction resulting in a controlled elongation of the muscle.
- Isometric contraction refers to a contraction characterized by a lack of displacement. It is the contraction of the muscle to resist a constraint without joint movement.
- Ergometer means a physical exercise machine that consists in having the user reproduce a defined exercise; Ergometer according to the present invention comprises means for measuring a force and / or an articular displacement.
- Force and / or articular displacement means the force and / or displacement imposed on the joint by any external means within the reach of the human being. profession or the force and / or displacement suffered by the joint by the muscular action.
- “Ligament” refers to an anatomical formation that joins two bone structures.
- Means for measuring force and / or displacement means any means such as a sensor, a gauge, an accelerometer, a dynamometer or an ergometer for measuring the force and / or the articular displacement.
- Physiopathology or physiopathological state concerns the study of the disturbances of the normal mode of functioning of the elements of the human body.
- the physiopathological state corresponds to the state of physiological disruption of the biological tissue. Knowing or evaluating the physiopathological state thus consists in knowing or studying the modifications of the functions of the organism during a disease, such as, for example, tendinopathy.
- Treating refers to an anatomical formation that forms the junction between a muscle and a bone structure.
- Bio tissue located near a joint relates to a tissue (such as for example a muscle, a ligament, a tendon, a nerve or the skin) exercised during the movement of the bony parts of the joint.
- the present invention relates to a method for in vivo evaluation of the physiopathological state of a biological tissue.
- the method comprises, non-invasively, the simultaneous measurement of the force and / or joint displacement and at least one parameter calculated from the ultrasound signal received after propagation of an ultrasound wave in said biological tissue.
- the invention thus relates to a method for the non-invasive evaluation of the physiopathological state of a biological tissue located in the vicinity of a joint, comprising the emission of an ultrasound wave in said tissue, from a source of ultrasound, and the simultaneous acquisition of at least one parameter extracted from the signal ultrasound received after propagation of the ultrasonic wave, and at least one given force and / or articular displacement, and the processing of simultaneously acquired information.
- Said method according to the present invention not being an ultrasound imaging method.
- the present invention relates to a method for evaluating the physiopathological state of a biological tissue by measuring the mechanical properties of said biological tissue under stress.
- said biological tissue is a biological tissue of a mammal, preferably a human being.
- said biological tissue is any biological tissue, preferentially a muscle tissue, an epithelial tissue, a nerve tissue or a connective tissue, more preferably a tendon, a muscle, a ligament, a nerve or the skin.
- said biological tissue is located at a joint and / or near the skin to facilitate ultrasonic wave measurement and information retrieval specifically corresponding to the tissue of interest.
- said joint is any articulation of a mammal or a human being, preferably a joint with a main degree of freedom, still more preferably an articulation of the ankle, knee, elbow, metacarpophalangeal joint, metatarsophalangeal joint, or interphalangeal joint.
- the present invention relates to the evaluation of the physiopathological state of a tendon, muscle or ligament at an elbow joint, a knee joint, an ankle joint , a metacarpophalangeal joint, a metatarsophalangeal joint, or an interphalangeal joint.
- the present invention relates to the evaluation of the pathophysiological state of an Achilles tendon, a patellar ligament, a quadriceps tendon or a triceps brachii tendon.
- the present invention includes measuring the force and / or displacement to which the joint is subjected.
- the force and / or displacement may be imposed via an external device or means or by the subject himself, for example during a movement.
- the method of the invention includes a step of measuring the force and / or the articular displacement, or in an equivalent manner for the person skilled in the art, the stress and / or the deformation or else of the strength and / or position.
- the present invention comprises a first step of applying a force and / or a predefined displacement.
- the force and displacement measuring means may comprise two separate measuring means (one for measuring the force and one for measuring the displacement) or a combined measuring means.
- the means for measuring the force and / or the articular displacement may be any means known to those skilled in the art such as an accelerometer, a dynamometer, a force sensor or a displacement sensor.
- the invention comprises means for applying a predefined force and / or articular displacement which may be a jack (particularly a hydraulic jack) or a motor, as is well known to those skilled in the art. to generate the mobility of a limb or joint.
- said means is able to reproduce to the user a natural movement and / or to measure a force and / or a predefined displacement.
- Said means of the present invention is thus dedicated to the biomechanical characterization of a joint and makes it possible to stress the tissue by imposing on said articulation a force and / or a displacement.
- said means comprises an axis of rotation coinciding with the axis of rotation of the hinged joint.
- the invention comprises means for measuring the force and / or the articular displacement and means for applying a force and / or a predefined articular displacement.
- the subject and in particular his articulation of interest, is free and performs an articular movement, causing a force and / or an articular displacement. Said force and / or said articular displacement is then measured by means of measuring means according to the invention.
- the invention comprises means for measuring the force and / or articular displacement without means for applying a force and / or displacement. Said displacement and / or said force being imposed by the subject.
- the means for measuring the force and / or the articular displacement is fixed to the joint studied by any means of attachment within the reach of the skilled person such as straps for example.
- the ergometer is attached to the joint studied by any means of attachment within the reach of the skilled person such as straps for example.
- said attachment means is adjustable to accommodate subjects of varied anthropometric characteristics.
- the ergometer comprises an axis of rotation coinciding with the axis of rotation of the hinged joint.
- the ergometer can measure a force and / or an articular displacement.
- the force can be converted into moment of strength knowing the distance between the axis of rotation of the joint and the force sensor of the ergometer.
- the subjects are installed on an ergometer comprising a platform guided in rotation on an axis corresponding to the axis of the ankle joint.
- the articular angles of the knee and the ankle are adjusted to predefined values, preferably respectively 120 ° and 90 °.
- the foot of the subject is secured to the platform via a shoe and straps taking care to coincide the axis of rotation of the pin with the axis of rotation of the pedal.
- the ergometer of the present invention allows the performance of tests in dynamic condition (concentric contraction of the muscle or eccentric contraction of the muscle) or in static condition (isometric contraction of the muscle).
- the invention comprises a means of exerting on the articulation an external force of opposite direction and greater than the muscular force produced.
- the ergometer comprises a force sensor and / or a position sensor (making it possible to know the displacement) fixed integrally to the ergometer.
- the data from the force sensor and / or the position sensor are acquired using an acquisition system enabling simultaneous acquisition of said data and data from the ultrasound probe.
- the present invention comprises the emission into a tissue of an ultrasonic wave. Indeed the present invention allows the in vivo characterization of biological tissue from a biomechanical point of view by measuring the mechanical properties of a biological tissue when it is stressed. This measurement of the mechanical properties of a biological tissue is in particular carried out by propagation of an ultrasonic wave in said tissue. This Measuring the mechanical properties of a biological tissue is not obtained by ultrasound imaging.
- an ultrasound probe is placed on the skin facing the studied tissue so that the probe-tissue distance studied is as small as possible or the propagation of the ultrasonic wave is the best possible (by playing with example on the angle). It has been shown that the measurements made are not affected by the passage of the wave through the skin.
- the probe-tissue distance studied is between 1 millimeter and 25 centimeters, preferably between 5 millimeters and 5 centimeters.
- the face of the probe in contact with the skin is made of a biocompatible material, preferably a biocompatible silicone.
- the probe is adapted to the tissue to be studied so that the shape of the face of the probe in contact with the skin corresponds to the morphology of that body part, so generally the probe is slightly concave.
- the ultrasonic probe comprises at least one emitting transducer, preferably 1 to 50 emitting transducers, more preferably 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 transmitting transducers and at least one receptor transducer, preferably 1 to 100 receptor transducers, more preferably 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 100 receptor transducers.
- the emitting and receiving transducers are conventional transducers well known to those skilled in the art.
- the at least one emitting transducer and the at least one receiving transducer are aligned along the major axis of the subject fabric, i.e. the fiber axis of the fabric or the axis of tissue operation.
- the at least one transmitting transducer and the at least one receiving transducer are included in the ultrasound probe.
- the distance between the transmitting transducer and the at least one receiving transducer is fixed and predetermined.
- the ultrasound probe emits short ultrasonic pulses that approach the tendon at the critical angle according to the Snell-Descartes law, the ultrasonic waves then propagate along the fibers and are summed in phase at the transducers receivers of the probe.
- the presence of several receivers aligned with the at least one transmitter makes it possible to ensure a better reliability of the measurement since the travel time of the wave (and therefore the speed of propagation of the wave since the distance is fixed and determined between the transmitter and each receiver) between the transmitter and each receiver is calculated independently in order to obtain a reliable average propagation speed.
- the transmitter-receiver (s) distances are chosen so as to receive firstly the leading wave which is the longitudinal wave propagating at the skin / tissue interface.
- the measurement of the propagation velocity of the head wave is based on the digital detection of the first maximum associated with a technique of interpolation between receivers well known to those skilled in the art.
- the probe is fixed opposite the studied fabric. This maintenance of the probe without intervention of the operator, guarantees an independence of the measurement with respect to the operator.
- the angle formed between the ultrasound emitter and the at least one ultrasound receiver is between 60 ° and 120 °, preferably between 70 ° and 110 °, preferably 80 °; the transmitter being positioned symmetrically to the receiver with respect to a plane perpendicular to the axis of the fibers.
- the source repetition frequency (PRD) is between 0.1 kHz and 100 kHz, preferably between 1 kHz and 10 kHz.
- the frequency of the ultrasonic waves emitted by the probe is between 0.35 and 20 MHz, preferably between 0.6 and 1.6 MHz, more preferably between 1 and 1.4 MHz.
- the present invention comprises the simultaneous acquisition of ultrasound data received after propagation of an ultrasound wave emitted in said tissue and force and / or displacement data from the means for measuring the force and / or displacement of the joint .
- the data recording of the means for measuring the force and / or the articular displacement and the data extracted from the ultrasound wave are perfectly simultaneous so that, after processing, they can obtain quantitative results coupling these data. .
- the data acquisition means comprise the electronic cards ensuring the operation of the sensors of the means for measuring the force and / or the articular displacement and the transducers (transmitters and receivers) of the probe.
- the probe and the means for measuring force and / or articular displacement are connected to the acquisition system via wireless connection or wired connection, preferably via connection wired.
- the present invention comprises the processing of ultrasound data received after propagation of an ultrasound wave emitted in said tissue and force and / or displacement data from the means for measuring the force and / or displacement of the joint.
- the information of this wave is recovered after passing through said tissue by extracting at least one parameter chosen from:
- the propagation speed of the ultrasonic wave is recovered.
- the parameter is not the amplitude of the ultrasonic wave at the point of reception of the ultrasonic signal.
- the processing of said data comprises the extraction of at least one ultrasound parameter chosen from the propagation velocity of the ultrasonic wave, the attenuation of the ultrasonic wave at the point of reception of the wave, the amplitude of the ultrasonic wave at the point of reception of the wave, the frequency of the ultrasonic wave at the point of reception of the wave, or the modification of the frequency spectrum of the ultrasonic wave; then the correlation between the chosen parameter and the force and / or the articular displacement.
- the present invention does not include the extraction of at least one ultrasound parameter for medical imaging purposes.
- the acquisition and processing system comprises an acquisition card, a microprocessor, a data storage space, and at least one data processing software. In one embodiment, the system The acquisition and processing method further comprises a postprocessing data display module and / or a data transmission means.
- the processing of the data generated by the probe and the means for measuring the force and / or the articular displacement is performed by means of software (s) stored by the storage space of data.
- the software (s) allows:
- the said software (s) has been registered with ⁇ under the application number IDDN.FR.001.470027.000.S.P.2013.000.21000.
- the data processing system also includes a data display module.
- the ultrasound propagation speed is displayed preferentially on the display module as a function of the force, deformation or torque developed at the joint.
- the present invention also relates to a device for evaluating the physiopathological state of a biological tissue capable of implementing the method of the present invention.
- the present invention also relates to a device for evaluating the physiopathological state of a biological tissue located near a joint comprising:
- an ultrasound probe comprising at least one emitting transducer and at least one receiving transducer; a system for simultaneous acquisition of ultrasound data received after propagation of an ultrasound wave emitted in said tissue and data of force and / or articular displacement; and
- the evaluation device comprises, in a portable, integrated and non-invasive manner, the means for measuring a force and / or articular displacement, the ultrasound probe, the acquisition system, the treatment system and a autonomous source of energy; the ultrasound probe being placed on the skin facing the biological tissue and the means for measuring a force and / or an articular displacement being located at the level of the requested joint.
- the at least one transmitting transducer and the at least one receiving transducer of the probe are aligned along the axis of operation of the tissue studied.
- the acquisition and processing system comprises an acquisition card, a microprocessor, a data storage space, and at least one data processing software. In one embodiment, the acquisition and processing system further comprises a post-processing data display module and / or a data transmission means.
- the device of the present invention comprises a battery providing sufficient energy autonomy to the device for carrying out several measurements.
- the device of the present invention includes a remote control for remotely directing the device.
- the device of the present invention comprises means for transferring (USB, WIFI, Bluetooth, etc.) and storing the data on external media (video monitors, computers, etc.).
- the means for measuring a force and / or an articular displacement is positioned at the joint studied and comprises a force sensor and / or a position sensor (to know the displacement).
- An ultrasound probe is fixed next to the studied fabric. Said probe and said means for measuring a force and / or an articular displacement are connected to the acquisition and processing system and to a battery integrated in the device. The whole being solidary and easily transportable.
- the ergometer is positioned at the joint studied and comprises a force sensor and / or a position sensor (to know the displacement).
- An ultrasound probe is fixed next to the studied fabric. Said probe and said ergometer are connected to the acquisition and processing system and to a battery integrated in the device. The whole being solidary and easily transportable.
- the method and medical device of the present invention can be used in many applications.
- the device according to the present invention is intended to measure not the tension, but the state of health or physiopathological state of the tendon as a function of its mechanical properties. It integrates in a single device, simple to use, the various components necessary for the determination of mechanical properties and makes its use possible in clinical practice.
- the method of the present invention is used for diagnostic purposes in the service of a clinician in order to monitor the evolution of a pathology (tendinopathy, collagen pathology, etc.).
- the device of the present invention is used as a diagnostic tool in the service of a clinician to monitor the evolution of a pathology (tendinopathy, collagen pathology, etc.).
- the method of the present invention may serve as a method for evaluating the physiopathological state of a tissue in physiotherapy.
- the device of the present invention can serve as an evaluation tool in physiotherapy.
- the method of the present invention is used for prevention purposes for the use of individuals to evaluate changes in the mechanical properties of biological tissues and to predict the risk of injury.
- the device of the present invention is used as a preventive tool for the use of individuals to evaluate changes in the mechanical properties of biological tissues and to predict the risk of injury.
- the method of the present invention is used for monitoring purposes in order to monitor the evolution of the mechanical properties of the biological tissues of professional or amateur athletes.
- the device of the present invention is used as a monitoring tool to monitor the evolution of the mechanical properties of the biological tissues of professional or amateur athletes.
- the method of the present invention can be used for the evaluation of sports-friendly devices, such as new shoes or floor coverings.
- the device of the present invention can serve as a tool for evaluating devices suitable for sportsmen, such as for example new shoes or new floor coverings.
- the device according to the present invention is not an ultrasound elastography device and does not implement an ultrasound elasto-graphy method.
- Figure 1 is a schematic representation of the medical device of the present invention in an embodiment where the device is applied to the study of the physiopathological condition of the Achilles tendon.
- Said device comprises in an integrated manner:
- an ultrasonic transducer 2 for measuring the propagation velocity of the ultrasonic wave in axial transmission, said transducer is fixed parallel to the tendinous fibers;
- a microprocessor 3 for processing the signals generated by the transducer and ergometer; and extracting the data corresponding to the viscoelastic properties of the studied tendon;
- a display module 8 and storage of these data and the connectors 5, 6 for transferring it to other media such as a graphics tablet, or any other video monitor;
- said device comprises:
- An electronic module for the probe comprising:
- a broadband pulse card > 2 MHz
- 180 Vpp at.
- Ethernet control module e. 1 Ethernet control module. 3. at least one specific software performing the following functions:
- an ergometer comprising a pedal with a force sensor and a position sensor (to know the displacement).
- an electric module for the ergometer comprising:
- an electronic card for conditioning the force sensor vs. an electronic card for conditioning the force sensor, d. an electronic card for conditioning the position sensor.
- the volunteer is seated and seated knee flexed to 120 degrees.
- the warm-up phase prior to calibrated exercise, the subject is familiarized with the achievement of muscle contraction in isometric plantar flexion. He is asked to perform more and more contractions before the measurement of the Maximum Voluntary Contraction (CMV).
- the warm-up phase is necessary for any exercise related to measuring the viscoelastic properties of the tendons.
- This warming-up phase firstly comprises one minute of angular movements of the anchor (s) concerned, followed, after installation of the device of the present invention, including the ergometer and the ultrasound transducer, of the production of sub-maximal isometric contractions. and three maximal contraction tests (CMV) of the plantar flexors.
- the CMV is measured when the subject feels that he has understood the exercise well. We will carry out 3 tests whose average is calculated. The requested exercise is broken down into 5 phases over approximately 15 seconds of recording: this exercise will be explained to the patient and performed without ultrasound measurement at first to ensure the understanding of the exercise, once the learning the exercise performed, it will be repeated together with the ultrasonic measurement.
- the ultrasonic signals, and the articulated force and displacement signals will be recorded simultaneously.
- the orders of realization of the exercise will be given orally, with the respect of the different times mentioned above and encouragement of the subject.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Rheumatology (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Rehabilitation Therapy (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1362071A FR3013956B1 (fr) | 2013-12-04 | 2013-12-04 | Methode d'evaluation in vivo de l'etat physiopathologique d'un tissu biologique et dispositif associe |
| PCT/FR2014/053177 WO2015082858A1 (fr) | 2013-12-04 | 2014-12-04 | Méthode d'évaluation in vivo de l'état physiopathologique d'un tissu biologique et dispositif associé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3076876A1 true EP3076876A1 (fr) | 2016-10-12 |
Family
ID=50424444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14825411.3A Withdrawn EP3076876A1 (fr) | 2013-12-04 | 2014-12-04 | Méthode d'évaluation in vivo de l'état physiopathologique d'un tissu biologique et dispositif associé |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160367215A1 (fr) |
| EP (1) | EP3076876A1 (fr) |
| FR (1) | FR3013956B1 (fr) |
| WO (1) | WO2015082858A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108742705A (zh) * | 2018-04-10 | 2018-11-06 | 深圳大学 | 一种实时检测肌肉形态参数的超声成像设备及方法 |
| CN108524068A (zh) * | 2018-05-29 | 2018-09-14 | 湖南科技大学 | 一种小腿肌腱康复设备及操作方法 |
| CN109009217A (zh) * | 2018-09-18 | 2018-12-18 | 上海中医药大学附属岳阳中西医结合医院 | 调整手法声源测定仪 |
| WO2023077267A1 (fr) * | 2021-11-02 | 2023-05-11 | 深圳迈瑞动物医疗科技股份有限公司 | Méthode d'examen de tendon d'achille et dispositif d'échographie |
| WO2024145750A1 (fr) * | 2023-01-03 | 2024-07-11 | 深圳迈瑞动物医疗科技股份有限公司 | Procédé d'évaluation de l'état de rééducation du tendon d'achille et dispositif d'imagerie ultrasonore |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3925014A1 (de) * | 1989-07-27 | 1991-01-31 | Joachim Dr Med Grifka | Verfahren zur pruefung der stabilitaet von gelenken, insbesondere kniegelenken des menschlichen koerpers und haltegeraet zur durchfuehrung des verfahrens |
| FR2830936B1 (fr) * | 2001-10-16 | 2004-08-27 | Agronomique Inst Nat Rech | Procede pour mesurer l'etat de tension d'un materiau et applications de ce procede |
| WO2007067987A2 (fr) * | 2005-12-09 | 2007-06-14 | The Trustees Of Columbia University In The City Ofnew York | Systemes et procedes d'imagerie par elastographie |
| JP4378552B1 (ja) * | 2008-07-22 | 2009-12-09 | 国立大学法人 東京大学 | 超音波プローブ支持装置 |
-
2013
- 2013-12-04 FR FR1362071A patent/FR3013956B1/fr not_active Expired - Fee Related
-
2014
- 2014-12-04 WO PCT/FR2014/053177 patent/WO2015082858A1/fr not_active Ceased
- 2014-12-04 US US15/101,480 patent/US20160367215A1/en not_active Abandoned
- 2014-12-04 EP EP14825411.3A patent/EP3076876A1/fr not_active Withdrawn
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2015082858A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015082858A1 (fr) | 2015-06-11 |
| FR3013956B1 (fr) | 2017-09-15 |
| FR3013956A1 (fr) | 2015-06-05 |
| US20160367215A1 (en) | 2016-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Du et al. | Ultrasound shear wave elastography in assessment of muscle stiffness in patients with Parkinson's disease: a primary observation | |
| Jin et al. | Estimation of joint torque in dynamic activities using wearable A-mode ultrasound | |
| Kulig et al. | Ultrasound-based tendon micromorphology predicts mechanical characteristics of degenerated tendons | |
| US20090270728A1 (en) | System for measuring and tracking human body fat | |
| EP3076876A1 (fr) | Méthode d'évaluation in vivo de l'état physiopathologique d'un tissu biologique et dispositif associé | |
| US20250281152A1 (en) | Three-dimensional mapping of deep tissue modulus by stretchable ultrasonic arrays | |
| Maeda et al. | Intrinsic foot muscle hardness is related to dynamic postural stability after landing in healthy young men | |
| US20220378349A1 (en) | A novel means of assessing muscular function and frailty | |
| Agoriwo et al. | Feasibility and reliability of measuring muscle stiffness in Parkinson's disease using MyotonPRO device in a clinical setting in Ghana | |
| Romero et al. | Plantar soft tissue characterization using reverberant shear wave elastography: A proof-of-concept study | |
| Oranchuk et al. | The validity of a portable strain-gauge apparatus versus a commercial isokinetic dynamometer for evaluating knee extension kinetics | |
| Hu et al. | Correlation between muscle structures and electrical properties of the tibialis anterior in subacute stroke survivors: a pilot study | |
| Palmer et al. | Utility of peak torque and rate of torque development characteristics to identify walking performance ability in older women | |
| CN117158895A (zh) | 肌肉减少症智能便捷检测系统及检测方法 | |
| US20230255552A1 (en) | Systems and methods for joint health assessment | |
| Monjo et al. | Differential association of total and regional muscle mass and quality with physical performance in community-dwelling older adults | |
| KR20200142005A (ko) | 관절 분석 프로브 | |
| Wright et al. | Reliability of a trunk mounted accelerometer when determining gait parameters in people with stroke | |
| AU2024237128A1 (en) | Wearable ultrasound apparatus, system, and method | |
| Daud et al. | Mechanomyography in assessing muscle spasticity: A systematic literature review | |
| JP2009297206A (ja) | 非侵襲的な人の筋の損傷状態を評価する測定システム | |
| Busch et al. | Development and testing of a prototype reflex measurement system employing artificial neural networks | |
| Sikdar et al. | Measurement of rectus femoris muscle velocities during patellar tendon jerk using vector tissue Doppler imaging | |
| Cinarli et al. | Relationship between Rectus Femoris Muscle Architecture and Isokinetic Peak Knee Extension Torque in Physically Active Men | |
| Kellis et al. | Reliability of sonographic assessment of biceps femoris distal tendon strain during passive stretching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20160704 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20180312 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20200317 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20200728 |