NL2034960A - In vivo multidimensional stress-strain testing device for plantar soft tissues - Google Patents
In vivo multidimensional stress-strain testing device for plantar soft tissues Download PDFInfo
- Publication number
- NL2034960A NL2034960A NL2034960A NL2034960A NL2034960A NL 2034960 A NL2034960 A NL 2034960A NL 2034960 A NL2034960 A NL 2034960A NL 2034960 A NL2034960 A NL 2034960A NL 2034960 A NL2034960 A NL 2034960A
- Authority
- NL
- Netherlands
- Prior art keywords
- stress
- probe
- axis
- miniature
- strain
- Prior art date
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 219
- 210000004872 soft tissue Anatomy 0.000 title claims abstract description 73
- 238000001727 in vivo Methods 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 92
- 238000006073 displacement reaction Methods 0.000 claims abstract description 47
- 238000013519 translation Methods 0.000 claims abstract description 20
- 230000000737 periodic effect Effects 0.000 claims abstract description 9
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims description 110
- 230000033001 locomotion Effects 0.000 claims description 62
- 230000003287 optical effect Effects 0.000 claims description 31
- 230000001360 synchronised effect Effects 0.000 claims description 19
- 210000001519 tissue Anatomy 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000338 in vitro Methods 0.000 description 3
- 208000008960 Diabetic foot Diseases 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003759 clinical diagnosis Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011326 mechanical measurement Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 1
- 208000014770 Foot disease Diseases 0.000 description 1
- 208000003098 Ganglion Cysts Diseases 0.000 description 1
- 208000005400 Synovial Cyst Diseases 0.000 description 1
- 208000025865 Ulcer Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 208000012839 conversion disease Diseases 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 210000000281 joint capsule Anatomy 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 206010033675 panniculitis Diseases 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 231100000397 ulcer Toxicity 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
- A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
- A61B5/442—Evaluating skin mechanical properties, e.g. elasticity, hardness, texture, wrinkle assessment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/1036—Measuring load distribution, e.g. podologic studies
- A61B5/1038—Measuring plantar pressure during gait
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/1036—Measuring load distribution, e.g. podologic studies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6829—Foot or ankle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/70—Means for positioning the patient in relation to the detecting, measuring or recording means
- A61B5/702—Posture restraints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0261—Strain gauges
- A61B2562/0266—Optical strain gauges
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6834—Means for maintaining contact with the body using vacuum
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/70—Means for positioning the patient in relation to the detecting, measuring or recording means
- A61B5/704—Tables
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Physical Education & Sports Medicine (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dermatology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to the technical field of human detection and provides an in vivo multidimensional stress-strain testing device for plantar soft tissues, comprising a test bench provided with a testing area corresponding to a sole, a radial stress-strain testing unit configured to load and measure periodic vertical tensile pressure on plantar soft tissues, a shear stress-strain testing unit for loading and measuring cyclic transverse shear forces on plantar soft tissues, a torsion stress-strain testing unit for loading and measuring cyclic torsion on plantar soft tissues, an X-Y axis translation mechanism used to translate three stress-strain testing units horizontally, and lifting mechanisms used to realize vertical rise and fall of the three stress-strain testing units. The testing device of the present invention can realize force-displacement dynamic characteristic testing of positive pull pressure, shear force and torsional force of plantar soft tissues
Description
In vivo multidimensional stress-strain testing device for plantar soft tissues
The present invention relates to the technical field of human body inspection, in particular to an in vivo multidimensional stress-strain testing device for plantar soft tissues.
Background Technology
Soft tissues, relative to hard tissues (bones) and independent organs, is a general term for human skins, subcutaneous tissues, ligaments, ganglion capsules, muscles, tendons, synovial capsules, nerves, blood vessels, etc. As a part of human body bearing the largest load under working conditions, plantar soft tissues have evolved to have the characteristics of wear resistance, pressure resistance, and inter-layer displacement limitation in the anatomical structure, which is conducive to cushioning shock during walking and load-bearing stability, and can enhance the foot's tolerance to mechanical load. Many studies have shown that changes in the mechanical properties of plantar soft tissues are closely related to many feet pain and lower limb functional movement disorders, which may be one of the main reasons leading to the degeneration of soft tissue functions and diabetic feet ulcer in the aged. Therefore, the testing and analysis of mechanical properties of plantar soft tissues are beneficial to the clinical diagnosis, treatment and compensation of related foot diseases.
Existing studies have shown that plantar soft tissues have complex nonlinear viscoelastic dynamic behaviors, which reflects the characteristics of energy absorption, slow rebound and creep. Compared with hardness and elasticity, viscosity is more closely related to diseases such as diabetic feet. In classical material mechanics, dynamic mechanical analysis (DMA) is generally used for viscosity characterization to obtain periodic "stress-strain" data and establish constitutive equations. Therefore,
long-term and periodic direct mechanical measurements are inevitable in the study of soft tissue viscosity.
So far, the testing of mechanical properties of soft tissues is mainly limited to the indentation experiment of in vitro tissue specimens, such as soft tissue testing devices proposed by Chinese invention patent CN108760489A, CN104535415A,
CN106370519A and utility model patent CN205483873U, which are single, low frequency, vertical testing of in vitro tissue specimens. Testing devices proposed by
Chinese invention patents CN105527174A, CN105571956A, CN106680114A and
CN107941613A can perform shear experiments on in vitro biological soft tissues.
However, test results of isolated tissue specimens are hardly convincing, and the existing devices cannot simultaneously realize multi-degree-of-freedom dynamic tests in the vertical, horizontal shear and torsional directions, and there is still a big gap to the dynamic cycle stress-strain correspondence and Viscoelastic analysis in the DMA method.
Obviously, if direct multi-dimensional dynamic mechanical measurements can be carried out on the living bodies, there will be more accurate measurement and analysis methods for the material properties of soft tissues, which will be of great help to the research and understanding of the properties of soft tissues, and provide more data basis for clinical diagnosis and treatment, as well as the design of bionic materials and the development of foot finite element models that are more in line with the anatomical structure.
In order to solve above problems, the present invention provides an in vivo multidimensional stress-strain testing device for plantar soft tissues.
An in vivo multidimensional stress-strain testing device for plantar soft tissues is provided by the present invention, characterized in that a test bench provided with a testing area corresponding to a sole, a radial stress-strain testing unit arranged below the test bench and used for loading and measuring periodic vertical pull pressure on plantar soft tissues, a shear stress-strain testing unit arranged below the test bench and used for loading and measuring cyclic transverse shear forces on plantar soft tissues, a torsion stress-strain testing unit arranged below the test bench and used for loading and measuring cyclic torsion on plantar soft tissues, an X-Y axis translation mechanism used to translate three stress-strain testing units horizontally, and lifting mechanisms used to realize vertical rise and fall of the radial stress-strain testing unit, the shear stress-strain testing unit, and the torsion stress-strain testing unit.
The in vivo multidimensional stress-strain testing device for plantar soft tissues of the present invention is further characterized in that the radial stress-strain testing unit comprises a first driving motor, a first rotary-to-linear motion mechanism, a first probe, a first miniature pull pressure sensor and a first miniature displacement sensor which are connected in sequence; the first rotary-to-linear motion mechanism is used to convert rotary motions output by the first driving motor into linear reciprocating motions that drive the first probe to move in a vertical direction, the first probe is used to connect with a sole of a foot to be tested, the first miniature pull pressure sensor is used to test an internal force of plantar soft tissues acting on the first probe in the vertical direction, and the first miniature displacement sensor is used to test displacement of the first probe in a testing process.
Further, the first rotary-to-linear motion mechanism comprises a first eccentric wheel, afirst linear guide rail, a first optical axis, a first linear bearing, and a first support frame; a rotation central axis of the first eccentric wheel is connected to an output shaft of the first driving motor arranged horizontally, an eccentric shaft of the first eccentric wheel is connected with a slider of the first linear guide rail arranged horizontally, the first optical axis is connected with a sliding rail of the first liner guide rail, and is vertically installed on the first support frame through the first linear bearing; the first probe is arranged on an upper end of the first optical axis, the first miniature pull pressure sensor is connected between the first probe and the first optical axis, and the first miniature displacement sensor is installed on the first support frame and arranged on aside of the first optical axis.
The in vivo multidimensional stress-strain testing device for plantar soft tissues of the present invention is further characterized in that the shear stress-strain testing unit comprises a second driving motor, a second rotary-to-linear motion mechanism and a second probe, a second miniature pull pressure sensor and a second miniature displacement sensor which are connected in sequence; and the second rotary-to-linear motion mechanism is used to convert rotary motions output by the second driving motor into linear reciprocating motions that drives the second probe to move in a horizontal direction, the second probe is used to connect with a sole of a foot to be tested, and the second miniature pull pressure sensor is used to test an internal force of plantar soft tissues acting on the second probe in a transverse shearing direction, and the second miniature displacement sensor is used to test displacement of the second probe in a testing process.
Further, the second rotary-to-linear motion mechanism comprises a second eccentric wheel, a second connecting part with a large-diameter bearing and a small-diameter bearing, a second linear bearing, a second optical axis, a second linear guide rail, a horizontal connecting rod, and limit bearings and a second support frame; an eccentric hole as a center of rotation of the second eccentric wheel is connected to an output shaft of the second driving motor arranged vertically, an inner ring of the large- diameter bearing is connected to the second eccentric wheel, an inner ring of the small- diameter bearing is connected to the second linear bearing, the second optical axis is arranged vertically and cooperates with the second linear bearing, a lower end of the second optical axis is connected to a slider of the second linear guide rail arranged horizontally, an upper end of the second optical axis is connected to a horizontal connecting rod parallel to the second linear guide rail, the horizontal connecting rod is installed on two limit bearings, and the second linear guide rail and the two limit 5 bearings are installed on the second support frame; the second probe is connected to the horizontal connecting rod through a vertical connecting rod, the second miniature pull pressure sensor is connected to the horizontal connecting rod, and the second miniature displacement sensor is installed on the second support frame and arranged on a side of the vertical connecting rod.
The in vivo multidimensional stress-strain testing device for plantar soft tissues of the present invention is further characterized in that the torsion stress-strain testing unit comprises a third driving motor, a rotary-to-twisting motion mechanism, a third probe, a miniature dynamic torsion sensor and a miniature angle sensor which are connected in sequence; the rotary-to-twisting motion mechanism is used to convert rotary motions output by the third driving motor into reciprocating motions that drive the third probe to twist in a horizontal direction, and the third probe is used to connect with a sole of a foot to be tested, the miniature dynamic torsion sensor is used to test torsion of plantar soft tissues acting on the third probe, and the miniature angle sensor is used to test a rotation angle of the third probe in a testing process.
Further, the rotary-to-twisting motion mechanism comprises an eccentric turntable, a third linear guide rail, a ball spline, a first bearing seat with a bearing, a third support frame and a second bearing seat with a bearing; an eccentric hole as a center of rotation of the eccentric turntable is connected to an output shaft of the third driving motor arranged vertically, and a slide rail of the third linear guide is arranged horizontally and connected with a spline sleeve of the ball spline arranged vertically, a slider of the third linear guide is installed on an edge of the eccentric turntable, the spline sleeve of the ball spline is connected with an inner ring of the bearing of the first bearing seat, and installed together on the third support frame, and a lower end of a spline rod of the ball spline is matched with the bearing of the second bearing seat; and the third probe is arranged on an upper end of the splined rod, the miniature dynamic torsion sensor is connected between the third probe and the splined rod, and the miniature angle sensor is connected to a lower end of the splined rod.
The in vivo multidimensional stress-strain testing device for plantar soft tissues of the present invention is further characterized in that probes are rigid planar probes or vacuum chuck probes.
The in vivo multidimensional stress-strain testing device for plantar soft tissues of the present invention is further characterized in that the X-Y axis translation mechanism comprises a mobile platform, an X-axis driving motor, cylindrical gear sets, X-axis screw slider modules, a Y-axis driving motor, a dual-axis reducer, synchronous pulley assemblies, meshing blocks, and Y-axis linear guide rails; the radial stress-strain testing unit, the shear stress-strain testing unit, the torsion stress-strain testing unit and the lifting mechanisms are installed on the mobile platform, the mobile platform is installed on sliders of the X-axis screw slider modules, a lead screw of the X-axis lead screw slider module is driven by the X-axis driving motor through the cylindrical gear sets, the Y-axis driving motor drives two synchronous pulley assemblies on both sides through the dual-axis reducer to perform synchronous transmission, two ends of the X-axis screw slider modules are equipped with the engaging blocks, and the two engaging blocks are respectively engaged with synchronous belts of the two synchronous pulley assemblies, and the two ends of the X-axis screw slider modules are respectively installed on the sliders of two Y-axis linear guide rails.
The in vivo multidimensional stress-strain testing device for plantar soft tissues of the present invention is further characterized in that the lifting mechanisms include driving parts, rotating shafts, bevel gear sets, and Z-axis screw slider modules, the driving parts are connected to the rotating shafts arranged horizontally, the rotating shafts are connected to lead screws of the Z-axis screw slider modules through the bevel gear sets, sliders of the Z-axis lead screw slider modules are connected to and drive the radial stress-strain testing unit, the shear stress-strain testing unit, and the torsion stress- strain testing unit to rise and fall vertically.
Beneficial effects of the present invention
In the in vivo multidimensional stress-strain testing device for plantar soft tissues of the present invention, a test bench, and below the test bench are arranged a radial stress- strain testing unit, a shear stress-strain testing unit, and a torsion stress-strain testing unit, so that the present invention can directly test force-displacement dynamic characteristics of positive pull pressure, shear forces and torsional forces on plantar soft tissues; further the present invention comprises an X-Y axis translation mechanism that can drive three stress-strain testing units to translate in a horizontal direction, and lifting mechanisms that can rise and fall in a vertical direction, so the present invention can test mechanical properties of different parts in plantar soft tissues.
Figure 1 is a perspective view of an in vivo multidimensional stress-strain testing device for plantar soft tissues provided an embodiment of the present invention.
Figure 2 shows an overall structure of a radial stress-strain testing unit, a shear stress- strain testing unit, a torsion stress-strain testing unit and lifting mechanisms in an embodiment of the present invention.
Figure 3 shows a structure comprising a radial stress-strain testing unit and a corresponding lifting mechanism in an embodiment of the present invention.
Figure 4 shows connection between a first eccentric wheel and a first linear guide rail of a first rotary-to-linear motion mechanism in an embodiment of the present invention.
Figure 5 shows a structure comprising a shear stress-strain testing unit and a corresponding lifting mechanism in an embodiment of the present invention.
Figure 6 shows how a second eccentric wheel, a second connecting part and a second optical axis of a second rotary-to-linear motion mechanism are connected in an embodiment of the present invention.
Figure 7 shows a structure comprising a torsion stress-strain testing unit and a corresponding lifting mechanism in an embodiment of the present invention.
Figure 8 shows connection between a third linear guide rail and a ball spline of rotary- to-twisting motion mechanism in an embodiment of the present invention.
Figure 9 is a structural view of an X-Y axis translation mechanism in an embodiment of the present invention.
The markups in drawings are indicated as follows: 10-test bench; 11-flat pallet; 111-kidney-shaped slot; 12-support leg; 20-radial stress- strain testing unit; 21- first driving motor; 22-first rotary-to-linear motion mechanism; 221-first eccentric wheel; 222-first linear guide rail; 223-first optical axis; 224-first linear bearing; 225- flexible diaphragm coupling; 226- first connecting part; 227-first support frame; 23-first probe; 24-first miniature pull pressure sensor; 25-first miniature displacement sensor; 30-shear stress-strain testing unit; 31- second driving motor; 32- rotary-to-linear motion mechanism; 321-second eccentric wheel; 322-second connecting part; 3221-large-diameter bearing; 3222- small-diameter bearing; 323- second linear bearing; 324-second optical axis; 325-second linear guide rail; 326-
horizontal connecting rod; 327-limit bearing; 328-second support frame; 329-right angle connector; 310-vertical connecting rod; 33-second probe; 34-second miniature pull pressure sensor; 35-second miniature displacement sensor; 40-torsion stress-strain testing unit; 41-third driving motor; 42-rotary-to-twisting motion mechanism; 421- eccentric turntable; 422-third linear guide rail; 423-ball spline; 424-first bearing seat; 425-third support frame; 426-second bearing seat; 427-coupling; 43-third probe; 44- miniature dynamic torsion sensor; 45-micro angle sensor; 50-X-Y axis translation mechanism; 51-mobile platform; 52-X-axis driving motor; 53-cylindrical gear set; 54-X- axis screw slider module; 55-Y-axis driving motor; 56-double axis reducer; 57- synchronous pulley assembly; 58-meshing block; 59-Y-axis linear guide rail; 60-lifting mechanism; 61-driving part; 62-rotating shaft; 63-bevel gear set; 64-Z-axis screw slider module; 65-mounted bearing; 66-locking mechanism; and 70- movable trolley platform.
Specific Embodiments
In order to make technical means, creative features, goals and effects realized by the present invention easy to understand, the present invention is described in detail through following embodiments in combination with the attached drawings.
Figure 1 is a perspective view of an in vivo multidimensional stress-strain testing device for plantar soft tissues provided an embodiment of the present invention; and figure 2 shows an overall structure of a radial stress-strain testing unit, a shear stress-strain testing unit, a torsion stress-strain testing unit and lifting mechanisms in an embodiment of the present invention.
As shown in figure 1, the present embodiment provides an in vivo multidimensional stress-strain testing device for plantar soft tissues, comprising a test bench 10, and below the test bench 10 are arranged a radial stress-strain testing unit 20, a shear stress-strain testing unit 30, a torsion stress-strain testing unit 40, an X-Y axis translation mechanism 50, and lifting mechanisms 60.
The test bench 10 is used to carry a foot of a tester, and the test bench 10 is provided with a testing area corresponding to a sole so that plantar soft tissues can be tested via three stress-strain testing units; in the present embodiment, the test bench 10 comprises a flat pallet 11 horizontally arranged and support legs 12 installed at four corners of a bottom surface of the flat pallet 11, the flat pallet 11 is used to carry the foot, and on the flat pallet 11 are provided a plurality of kidney-shaped slots 111 which are arranged side by side, the plurality of kidney-shaped slots 111 correspond to different parts of the sole forming a testing area; on the test bench 10 can be configured fixing devices such as fixing belts, clamps, etc., so that the testing is carried out under a stable and static state, free from interference of physical activities; and in the present embodiment, the test bench 11 is provided with magic straps for fixing feet which are not shown in figures.
The radial stress-strain testing unit 20 is for loading and measuring periodic vertical pull pressure on plantar soft tissues, the shear stress-strain testing unit 30 is used for loading and measuring cyclic transverse shear forces on plantar soft tissues, the torsion stress-strain testing unit 40 is used for loading and measuring cyclic torsion on plantar soft tissues, and the X-Y axis translation mechanism 50 is used to realize translation of three stress-strain testing units in a horizontal direction, and in the present embodiment, only one X-Y axis translation mechanism is arranged and shared by the three stress-strain testing units, so as to save space. The lifting mechanisms are used to realize vertical rise and fall of the three stress-strain testing units, and in the present embodiment, three lifting mechanisms are arranged so as to respectively and independently drive the three stress-strain testing units to rise and fall in the vertical direction, thereby preventing stress-strain testing units which do not need to be used from interfering with the test bench 10 or the sole in a testing process. Each part of the present invention will be described in details below.
Figure 3 shows a structure comprising a radial stress-strain testing unit 20 and a corresponding lifting mechanism 60 in an embodiment of the present invention.
As shown in figure 3, the radial stress-strain testing unit 20 comprises a first driving motor 21, a first rotary-to-linear motion mechanism 22, a first probe 23, a first miniature pull pressure sensor 24 and a first miniature displacement sensor 25, and the first driving motor 21, the first rotary-to-linear motion mechanism 22, the first probe 23, the first miniature pull pressure sensor 24 and the first miniature displacement sensor 25 are connected in sequence; the first rotary-to-linear motion mechanism 22 is used to convert rotary motions output by the first driving motor 21 into linear reciprocating motions that drive the first probe 23 to move in a vertical direction, the first probe 23 is used to connect with a sole of a foot to be tested so as to load periodic vertical pull pressure, the first miniature pull pressure sensor 24 is used to test an internal force of plantar soft tissues acting on the first probe 23 in the vertical direction, so as to obtain stress values of plantar soft tissues under vertical pull pressure, and the first miniature displacement sensor 25 is used to test displacement of the first probe 23 in a testing process, so as to obtain strain values of plantar soft tissues under vertical pull pressure.
Figure 4 shows connection between a first eccentric wheel and a first linear guide rail of a first rotary-to-linear motion mechanism in an embodiment of the present invention.
As shown in figure 3 and figure 4, in the present embodiment, the first driving motor 21 is a servo motor which can be accurately controlled, and an output shaft thereof is set horizontally; the first rotary-to-linear motion mechanism 22 mainly comprises a first eccentric wheel 221, a first linear guide rail 222, a first optical axis 223, a first linear bearing 224, and a first support frame 227, wherein a center shaft of the first eccentric wheel 221 is connected to the output shaft of the first driving motor 21 set horizontally by means of an elastic diaphragm coupling 225, an eccentric shaft of the first eccentric wheel 221 is connected with a slider of the first linear guide rail 222 which is arranged horizontally, the first optical axis 223 is connected with a sliding rail of the first liner guide rail via a first connecting part 226, and, is vertically installed on the first support frame 227 in a shape of a gantry (a vertical plate is not shown in the figures) through the first linear bearing 224 which are in the form of a flange; and the first probe 23 is arranged on an upper end of the first optical axis 223, the first miniature pull pressure sensor 24 is connected between the first probe 23 and the first optical axis 223, and the first miniature displacement sensor 25 is installed on the first support frame 227 and arranged on a side of the first optical axis 223, and displacement of the first connecting part 226 tested by the first miniature displacement sensor 25 in a testing process is equivalent to displacement of the first probe 23.
As shown in figure 3, the lifting mechanism 60 corresponding to the radial stress-strain testing unit 20 mainly comprises a driving part 61, a rotating shaft 62, a bevel gear set 63, and a Z-axis screw slider module 64, the driving part 61 is connected to the rotating shaft 62 arranged horizontally, the rotating shaft 62 is connected to a lead screw of the
Z-axis lead screw slider module 64 through the bevel gear set 63, so as to move a slider up and down, on the slider is provided a first driving motor 21, and the first driving motor 21 is driven to rise and fall in the vertical direction, then, the first probe 23 are driven up and down through the first rotary-to-linear motion mechanism 22, so that the first probe 23 rises to a position in contact with a sole of a foot during the testing, and descend to reset after the testing.
In the present embodiment, the driving part 61 comprises a handle, and the lifting mechanisms 60 is driven manually, which is convenient to operate and can save costs.
The rotating shaft 62 is horizontally installed on a mounted bearing 65, an end of the rotating shaft 62 is connected with the driving member 61 and is provided with a locking mechanism 66 with locking screws which can prevent the rotating shaft 62 from rotating during testing, and avoid affecting a self-locking state of the rotating shaft 62 due to reduction of a static friction force of a screw pair caused by dynamic testing; another end of the rotating shaft 62 is equipped with a driving straight bevel gear, a lower end of the lead screw of the Z-axis lead screw slider module 64 is equipped with a driven straight bevel gear, and two straight bevel gears are meshed to form the bevel gear set 63, and the slider of the Z-axis lead screw slider module 64 is driven by ball nuts on the lead screw to rise and fall.
Figure 5 shows a structure comprising a shear stress-strain testing unit and a corresponding lifting mechanism in an embodiment of the present invention.
As shown in figure 5, the shear stress-strain testing unit 30 comprises a second driving motor 31, a second rotary-to-linear motion mechanism 32, a second probe 33, a second miniature pull pressure sensor 34 and a second miniature displacement sensor 35; the second driving motor 31, the second rotary-to-linear motion mechanism 32, the second probe 33, the second miniature pull pressure sensor 34 and the second miniature displacement sensor 35 are connected in sequence; the second rotary-to-linear motion mechanism 32 is used to convert rotary motions output by the second driving motor 31 into linear reciprocating motions driving the second probe 33 to move in a horizontal direction, the second probe 33 is used to connect with a sole of a foot to be tested, and the second miniature pull pressure sensor 34 is used to test an internal force of plantar soft tissues acting on the second probe 33 in a transverse shearing direction, so as to obtain stress values of the plantar soft tissues under transverse shear forces, and the second miniature displacement sensor 35 is used to test displacement of the second probe in a testing process, so as to obtain strain values of plantar soft tissues subjected to transverse shear forces.
Figure 6 shows how a second eccentric wheel 321, a second connecting part 322 and a second optical axis 324 of a second rotary-to-linear motion mechanism 32 are connected in an embodiment of the present invention.
As shown in figure 5 and figure 6, in the present embodiment, the second driving motor 31 is a servo motor that can be accurately controlled, and an output shaft thereof is set vertically up. The second rotary-to- linear motion mechanism 32 mainly comprises a second eccentric wheel 321, a second connecting part 322 with a large-diameter bearing 3221 and a small-diameter bearing 3222, a second linear bearing 323, a second optical axis 324, a second linear guide rail 325, a horizontal connecting rod 326, limit bearings 327 and a second support frame 328, wherein an eccentric hole of the second eccentric wheel 321 as a rotation center is connected with the output shaft of the second driving motor 31, an inner ring of large-diameter bearing 3221 of the second connecting part 322 is connected with the second eccentric wheel 321, the second optical axis 324 is arranged vertically and matched with the second linear bearing 323, a lower end of the second optical axis 324 is connected with a slider of the second linear guide rail 325 arranged horizontally, an upper end of the second optical axis 324 is connected with the horizontal connecting rod 326 parallel to the second linear guide rail 325 through right angle connectors 329, the horizontal connecting rod 326 is installed on two limit bearing 327, and the two limit bearings 327 and the second linear guide rail 325 are installed on the second support frame 328; the second probe 33 is connected to the horizontal connecting rod 326 through a vertical connecting rod 310, the second miniature pull pressure sensor 34 is connected to the horizontal connecting rod 326, specifically, the horizontal connecting rod 326 is divided into two sections, and the second miniature pull pressure sensor 34 is connected between the two sections of horizontal connecting rod 326, the second miniature displacement sensor 35 is installed on the second support frame 328 and arranged on a side of the vertical connecting rod 310, and the second miniature displacement sensor 35 tests displacement of vertical connecting rod 310 in a testing process, which is equivalent to test displacement of the second probe 33.
As shown in figure 5, the corresponding lifting mechanism 60 which corresponds to the shear stress-strain testing unit 30, also comprises a driving part 61, a rotating shaft 62, a bevel gear set 63, a Z-axis screw slider module 64, a mounted bearing 65, and a locking mechanism 66, connection relationships among which are referred to previous description and will not be repeated, wherein the second support frame 328 is installed on a slider of the Z-axis lead screw slider module 64, the second support frame 328 is driven to rise and fall in a vertical direction so that all parts on the second support frame 328, especially the second probe 33 are driven to rise and fall in the vertical direction, thereby making the second probe 33 rise to a position in contact with a sole of a foot during testing and descend to rest after the testing.
Figure 7 shows a structure comprising a torsion stress-strain testing unit 40 and a corresponding lifting mechanism 60 in an embodiment of the present invention.
As shown in figure 7, the torsion stress-strain testing unit 40 comprises a third driving motor 41, a rotary-to-twisting motion mechanism 42, a third probe 43, a miniature dynamic torsion sensor 44 and a miniature angle sensor 45; the third driving motor 41, the rotary-to-twisting motion mechanism 42, the third probe 43, the miniature dynamic torsion sensor 44 and the miniature angle sensor 45 are connected in sequence; the rotary-to-twisting motion mechanism 42 is used to convert rotary motions output by the third driving motor 41 into reciprocating motions driving the third probe 43 to move in a horizontal direction, and the third probe 43 is used to connect with a sole of a foot to be tested so as to upload periodic torsion, the miniature dynamic torsion sensor 44 is used to test torsion of plantar soft tissues acting on the third probe 43, so as to obtain stress values of plantar soft tissues subjected to torsion, and the miniature angle sensor is used to test a rotation angle of the third probe 43 in a testing process, so as to obtain strain values of plantar soft tissues subjected to torsion.
Figure 8 shows connection between a third linear guide rail 422 and a ball spline 423 of a rotary-to-twisting motion mechanism 42 in an embodiment of the present invention.
As shown in figure 7 and figure 8, in the present embodiment, the third driving motor 41 is a servo motor that can be accurately controlled, and an output shaft thereof is set vertically up, and the third driving motor 41 and the second driving motor 31 can be a same servo motor; the rotary-to-twisting motion mechanism 42 comprises an eccentric turntable 421, a third linear guide rail 422, a ball spline 423, a first bearing seat with a bearing 424, a third support frame 425 and a second bearing seat 426 with bearings; an eccentric hole as a center of rotation of the eccentric turntable 421 is connected to the output shaft of the third driving motor 41 arranged vertically, an edge of the eccentric turntable 421 is fixed with a slider of the third linear guide 422, and a slide rail of the third linear guide 422 is arranged horizontally and an end of the slide rail is connected with a spline sleeve of the ball spline 423 vertically arranged, the spline sleeve of ball spline 423 is connected to an inner ring of the bearing of the first bearing seat 424, the first bearing seat 424 is mounted on the third support frame 425, a lower end of a spline rod of the ball spline 423 cooperates with the bearing of the second bearing seat 426, and the spline rod is processed with a shaft shoulder for axial limitation; the third probe 43 is arranged at an upper end of the spline rod, and the miniature dynamic torsion sensor 44 is connected between the third probe 43 and the spline rod; and the miniature angle sensor 45 is connected to a lower end of the spline rod via a coupling 427.
As shown in figure 7, the corresponding lifting mechanism 60 which corresponds to the torsion stress-strain testing unit 40, also comprises a driving part 61, a rotating shaft 62, abevel gearset 63, a Z-axis screw slider module 64, a mounted bearing 65, and a locking mechanism 66, connection relationships among which are referred to previous description and will not be repeated, wherein the Z-axis lead screw slider module 64 is installed on the third support frame 425, a lifting plate is installed on a slider of Z-axis lead screw slider module 64, on the lifting plate are arranged the second bearing seat
426 and the miniature angle sensor 45, and the lifting plate is driven to rise and fall, so as to drive the ball spline 423, the miniature dynamic torsion sensor 44 and the third probe 43 to rise and fall, and make the third probe 43 rise to a position in contact with a sole of a foot during testing, and descend to reset after the testing.
Among the three stress-strain testing units, the first probe 23, the second probe 33 and the third probe 43 can be rigid plane probes or vacuum sucker probes, which can be selected as desired by testers, but ensure that probes and plantar soft tissues are effectively connected, so as to ensure that plantar soft tissues and probes deformation synchronously in a testing process. When the rigid plane probes are selected, rigid plane probes are glued to surface skins of the plantar soft tissues by non-biotoxic and easy to clean adhesives which has advantages of good fixing effect, high synchronization degree between the plantar soft tissues and the probes, and also has disadvantages of more troublesome experimental treatment, less available adhesives, and possibly low willingness of testers to cooperate; and when the vacuum sucker probes are selected, vacuum generators are made to reach a certain value of pressure through solenoid valves, so that the vacuum sucker probes can absorb surface skins of plantar soft tissues, which has advantages of simple operation and high willingness of testers to cooperate, and also has disadvantages that suckers of the vacuum sucker probes have so large deformation space that the plantar soft tissues and vacuum sucker probes cannot perform synchronously well, and cannot be fixed firmly.
In view of comfort of testers and generally bearable strength of soft tissues of the human bodies, a vertical displacement travel of the first probe 23 of the radial stress- strain testing unit 20 is controlled within a range of +5mm, and a transverse displacement travel of the second probe 33 of the shear stress-strain testing unit 30 is controlled within a range of +5 mm, a steering angle of the third probe 43 of the rotary- to-twisting motion mechanism 42 is controlled within a range of £30°, and a cycle frequency does not exceed 100Hz; further, the vertical displacement travel of the first probe 23 can be adjusted by an eccentric distance of the first eccentric wheel 221, and the transverse displacement travel of the second probe 33 can be adjusted by an eccentric distance of the eccentric turntable 421; a steering angle range of the third probe 43 can be adjusted through changing an eccentric distance and an eccentric radius of the eccentric turntable 421, namely, by changing position of the third linear guide rail 422. In addition, motion frequencies of all probes can be adjusted through a motor servo system.
Figure 9 is a structural view of an X-Y axis translation mechanism 50 in an embodiment of the present invention.
As shown in figure 9, in the present embodiment, the X-Y axis translation mechanism 50 comprises a mobile platform 51, an X-axis driving motor 52, cylindrical gear sets 53,
X-axis screw slider modules 54, an Y-axis driving motor 55, a dual-axis reducer 56, synchronous pulley assemblies 57, meshing blocks 58, and Y-axis linear guide rails 59, wherein the three stress-strain testing units, and the corresponding lifting mechanisms are installed on and bore by the mobile platform 51, the mobile platform 51 is installed on sliders of two X-axis screw slider modules 54, a lead screw of one of the two X-axis lead screw slider modules 54 is driven by the X-axis driving motor 52 through the cylindrical gear sets 53, specifically, the X-axis driving motor 52 adopts a stepper motor, and realizes reversing and shifting of ball nuts on lead screws of the X axis lead screw slider modules 54 through transmission of the cylindrical gear sets 53, and linear guide rails of the X-axis lead screw slider modules 54 are cooperated to drive the moving platform 51 to translate in a direction of an X-axis. The Y-axis driving motor 55 adopts a stepper motor, and drives two synchronous pulley assemblies 57 on both sides thereof through connected double-shaft reducer 56 to perform synchronous transmission. Two ends of each X-axis lead screw slider module 54 respectively correspond to two synchronous pulley assemblies 57, ends of each X-axis lead screw slider module 54 are provided with meshing blocks 58 meshing with synchronous pulley assemblies 57, the
Y-axis linear guide rails 59 are arranged two, and the ends of each X-axis lead screw slider module 54 are respectively installed on the sliders of two Y-axis linear guide rails 59, so that, the two synchronous pulley assemblies 57 drive the two X-axis lead screw slider modules 54 to translate in a Y-axis direction, and then the mobile platform 51 to translate in the Y-axis direction.
The X-Y axis translation mechanism 50 can be entirely set on a movable trolley platform 70, which can realize an overall mobile function of the in vivo multidimensional stress- strain testing device for plantar soft tissues.
The following is a specific description of how to use the in vivo multidimensional stress- strain testing device for plantar soft tissues of the present invention.
A tester sits on a chair, places a foot in the testing area on the test bench 10, and fixes the foot and a leg by magic straps, so that the testing is carried out in a stable state.
After fixing the foot of the tester, the X-Y axis translation mechanism 50 starts to operate, as the present invention can achieve radial stress-strain testing, shear stress- strain testing and torque stress-strain testing, so according to testing needs, probes of the three stress-strain testing units are respectively moved below positions below a sole of the foot through the X-Y axis mechanism 50, to realize testing of three stress- strain characteristics of tested parts. After completing testing of some part of the sole of the foot, the testing can be performed again on another part of the sole of the foot again through the X-Y axis translation mechanism 50.
Specifically, first of all, the X-axis drive motor 52 is controlled to operate, the cylindrical gear sets 53 are driven and cooperate with the X-axis lead screw slider modules 54 to move, then the moving platform 51 is driven to translate along the X-axis direction, so as to change positions of probes in the X-axis direction until probes and a to-be-tested part of the sole move to a same X-coordinate; after then, the Y-axis driving motor 55 is controlled to operate, and the two synchronous pulley assemblies 57 are driven synchronously by the dual-axis reducer 56, so that the moving platform 51 on the two
X-axis lead screw slider modules 54 is driven by the meshing blocks 58 along the Y-axis direction, thereby changing positions of probes in the Y-axis direction until probes and the to-be-tested part of the sole move to the same Y coordinate; at this time probes are below the to-be-tested part of the sole, and the X-Y axis translation mechanism 50 completes translation work.
Then, the driving parts 61 of the lifting mechanisms 60 are operated, the rotating shafts 62 and the bevel gear sets 63 transmit motions to drive the lead screws of the Z axis screw slider modules 64 screw to rotate, and the ball nuts on lead screws are driven to rise along a vertical direction, thereby rising corresponding stress-strain testing units in the vertical direction, until probes are in contact with the sole, that is, when force is tested for a first time by pressure sensors, the driving parts 61 stop rotating and the locking mechanisms 66 lock, at this moment, probes are bonded with surface skin of plantar soft tissues by adhesives or vacuum adsorption, so as to ensure that probes drive plantar soft tissue to make synchronous displacement in a dynamic testing process.
Next, it comes to a testing stage, and the servo motors controlling the corresponding stress-strain testing units start to run. When a radial stress-strain testing is carried out, the first miniature pull pressure sensor 24 and the first miniature displacement sensor carry out testing and recording of forces and displacement respectively; when a 25 shear stress-strain testing is carried out, the second micro pull pressure sensor 34 and the second micro displacement sensor 35 respectively carry out testing and recording of forces and displacement; when a torsion stress-strain testing is carried out, the miniature dynamic torsion sensor 44 and the miniature angle sensor 45 respectively carry out for testing and recording of torsion and angles. Obtained periodic stress-strain data is a representation of dynamic mechanical analysis (DMA) in the mechanics of materials, and can be analyzed by a classic DMA method to characterize mechanical properties of vertical tensile and compressive resistance, lateral shear resistance and rotational torque resistance of tested plantar soft tissues.
In addition, it needs to be explained that, when the in vivo multidimensional stress- strain testing device for plantar soft tissues are actually designed and constructed, a to- be-tested part is not limited to plantar soft tissues of a human body, according to different to-be-tested parts and actual use needs, support and fixed ways of the test bench 10 can be changed to realize testing of soft tissue characteristics of other parts of a human body.
Functions and effects of embodiments
According to the above embodiments, the in vivo multidimensional stress-strain testing device for plantar soft tissues of the present invention comprises a test bench, and a radial stress-strain testing unit, a shear stress-strain testing unit, and a torsion stress- strain testing unit which are arranged below the test bench, so that the present invention can directly test force-displacement dynamic characteristics of positive pull pressure, shear forces and torsional forces on plantar soft tissues; further the present invention comprises an X-Y axis translation mechanism that can drive the three stress- strain testing units to translate horizontally and lifting mechanisms that can be lifted vertically, so the present invention can test mechanical properties of plantar soft tissues in different parts.
The above embodiments are preferred examples of the present invention, and are not intended to limit the protection scope of the present invention.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260514.1A CN115500814A (en) | 2022-10-14 | 2022-10-14 | Plantar soft tissue in-vivo multidimensional stress-strain detection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL2034960A true NL2034960A (en) | 2023-07-07 |
| NL2034960B1 NL2034960B1 (en) | 2024-01-25 |
Family
ID=84510300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2034960A NL2034960B1 (en) | 2022-10-14 | 2023-05-31 | In vivo multidimensional stress-strain testing device for plantar soft tissues |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN115500814A (en) |
| NL (1) | NL2034960B1 (en) |
| WO (1) | WO2024077956A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115500814A (en) * | 2022-10-14 | 2022-12-23 | 复旦大学 | Plantar soft tissue in-vivo multidimensional stress-strain detection equipment |
| CN117664705B (en) * | 2024-01-30 | 2024-05-14 | 复旦大学 | Multi-dimension broad-spectrum on-line clinical detection equipment for mechanical properties of plantar soft tissue material |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991016003A1 (en) * | 1990-04-17 | 1991-10-31 | Skintech Holdings Aps | An apparatus for a penetration-free measurement of at least one mechanical property of soft biological tissue |
| US6190334B1 (en) * | 1999-05-24 | 2001-02-20 | Rbp, Inc. | Method and apparatus for the imaging of tissue |
| CN104535415A (en) | 2014-12-19 | 2015-04-22 | 大连理工大学 | Biological soft tissue mechanical property test clamping device and method based on vacuum adsorption |
| US9017266B2 (en) * | 2007-02-13 | 2015-04-28 | The Hong Kong Polytechnic University | Automated testing for palpating diabetic foot patient |
| CN105527174A (en) | 2016-01-05 | 2016-04-27 | 郑州大学 | Measuring device of biological soft tissue mechanical properties |
| CN105571956A (en) | 2016-01-05 | 2016-05-11 | 郑州大学 | Shearing device for measuring mechanical properties of biological soft tissues |
| CN205483873U (en) | 2016-01-25 | 2016-08-17 | 中国科学院声学研究所东海研究站 | Biological tissue elasticity measuring apparatu |
| CN106370519A (en) | 2016-10-13 | 2017-02-01 | 苏州大学张家港工业技术研究院 | Tester for micromechanical properties of biological soft tissue |
| CN106680114A (en) | 2017-01-19 | 2017-05-17 | 苏州大学 | Soft tissue anisotropy shearing mechanical property tester |
| CN107941613A (en) | 2017-11-15 | 2018-04-20 | 江苏铂影数据科技有限公司 | Biological respinse and soft tissue mechanics multifunctional testing integrated instrument |
| CN108760489A (en) | 2018-05-08 | 2018-11-06 | 北京工业大学 | The device and method that skin soft tissue biomechanical parameter measures |
| US11426121B1 (en) * | 2019-09-20 | 2022-08-30 | Auburn University | Semi-automated plantar surface sensation detection device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7201063B2 (en) * | 2004-04-30 | 2007-04-10 | Taylor Geoffrey L | Normal force gradient/shear force sensors and method of measuring internal biological tissue stress |
| CN1317995C (en) * | 2004-07-23 | 2007-05-30 | 西安交通大学 | Integral soft tissue dynamic load response parameter collection system |
| CN103389243B (en) * | 2013-07-31 | 2015-04-08 | 吉林大学 | Micro material mechanical performance testing platform under stretching-bending-twisting multi-loads |
| CN106725494B (en) * | 2015-11-20 | 2020-03-31 | 北京航空航天大学 | Plantar pressure-blood flow characteristic relation measuring instrument in standing and sitting postures |
| WO2017171660A1 (en) * | 2016-04-01 | 2017-10-05 | Nanyang Technological University | Foot joint health diagnosis system |
| KR101933181B1 (en) * | 2016-12-28 | 2018-12-27 | 중앙대학교 산학협력단 | Device and method to measure mechanical properties of hindfoot plantar tissue |
| US20200297522A1 (en) * | 2017-11-21 | 2020-09-24 | Charles Milgrom | Patient-specific plantar pressure relief |
| CN115500814A (en) * | 2022-10-14 | 2022-12-23 | 复旦大学 | Plantar soft tissue in-vivo multidimensional stress-strain detection equipment |
| CN115736834A (en) * | 2022-11-25 | 2023-03-07 | 浙江大学台州研究院 | Device and method for detecting multidimensional characteristics of soft tissues of soles |
-
2022
- 2022-10-14 CN CN202211260514.1A patent/CN115500814A/en active Pending
-
2023
- 2023-05-19 WO PCT/CN2023/095205 patent/WO2024077956A1/en unknown
- 2023-05-31 NL NL2034960A patent/NL2034960B1/en active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991016003A1 (en) * | 1990-04-17 | 1991-10-31 | Skintech Holdings Aps | An apparatus for a penetration-free measurement of at least one mechanical property of soft biological tissue |
| US6190334B1 (en) * | 1999-05-24 | 2001-02-20 | Rbp, Inc. | Method and apparatus for the imaging of tissue |
| US9017266B2 (en) * | 2007-02-13 | 2015-04-28 | The Hong Kong Polytechnic University | Automated testing for palpating diabetic foot patient |
| CN104535415A (en) | 2014-12-19 | 2015-04-22 | 大连理工大学 | Biological soft tissue mechanical property test clamping device and method based on vacuum adsorption |
| CN105527174A (en) | 2016-01-05 | 2016-04-27 | 郑州大学 | Measuring device of biological soft tissue mechanical properties |
| CN105571956A (en) | 2016-01-05 | 2016-05-11 | 郑州大学 | Shearing device for measuring mechanical properties of biological soft tissues |
| CN205483873U (en) | 2016-01-25 | 2016-08-17 | 中国科学院声学研究所东海研究站 | Biological tissue elasticity measuring apparatu |
| CN106370519A (en) | 2016-10-13 | 2017-02-01 | 苏州大学张家港工业技术研究院 | Tester for micromechanical properties of biological soft tissue |
| CN106680114A (en) | 2017-01-19 | 2017-05-17 | 苏州大学 | Soft tissue anisotropy shearing mechanical property tester |
| CN107941613A (en) | 2017-11-15 | 2018-04-20 | 江苏铂影数据科技有限公司 | Biological respinse and soft tissue mechanics multifunctional testing integrated instrument |
| CN108760489A (en) | 2018-05-08 | 2018-11-06 | 北京工业大学 | The device and method that skin soft tissue biomechanical parameter measures |
| US11426121B1 (en) * | 2019-09-20 | 2022-08-30 | Auburn University | Semi-automated plantar surface sensation detection device |
Non-Patent Citations (1)
| Title |
|---|
| WU LONGYAN ET AL: "A novel dynamic mechanical analysis device to measure the in-vivo material properties of plantar soft tissue and primary finite elementary analysis results", JOURNAL OF PHYSICS: CONFERENCE SERIES, INSTITUTE OF PHYSICS PUBLISHING, GB, vol. 2313, no. 1, 1 July 2022 (2022-07-01), XP020429329, ISSN: 1742-6588, [retrieved on 20220701], DOI: 10.1088/1742-6596/2313/1/012029 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024077956A1 (en) | 2024-04-18 |
| NL2034960B1 (en) | 2024-01-25 |
| CN115500814A (en) | 2022-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NL2034960B1 (en) | In vivo multidimensional stress-strain testing device for plantar soft tissues | |
| CN102175598B (en) | End face torsion frictional wear testing machine and method | |
| CN108344650B (en) | Electromagnetic experimental device for testing impact mechanical properties of biological materials | |
| WO2018068338A1 (en) | Tester for micromechanical properties of biological soft tissue | |
| CN103257076A (en) | Artificial hip joint dynamic fatigue wear sample clamp and tester | |
| CN105300672B (en) | The external fatigue tester of alternate load stepless adjustable internal fixation of spine device | |
| CN115394146B (en) | Human cervical vertebra simulation device and teaching robot for training by rotary handle method | |
| CN110464359A (en) | Portable sitting body anteflexion tester and test method | |
| CN105891035A (en) | Frictional wear testing device of orthopaedic implantation instrument | |
| CN105067465B (en) | A kind of double acting platform parallel connected bionic hip joint tester and its test method | |
| CN117664705B (en) | Multi-dimension broad-spectrum on-line clinical detection equipment for mechanical properties of plantar soft tissue material | |
| CN112274381B (en) | Ankle rehabilitation auxiliary training system with six degrees of freedom and rehabilitation training control terminal | |
| CN116263389A (en) | Soft tissue periodic shear stress strain on-line detection equipment | |
| CN206248460U (en) | Biologic soft tissue Micromechanics characteristic tester | |
| CN110605705B (en) | Parallel motion platform | |
| CN116263388A (en) | Soft tissue cycle torque stress strain on-line detection equipment | |
| CN213580485U (en) | Orthopedics material developments twist reverse tester | |
| CN106190834A (en) | A kind of single roll and unidirectional slip synchronize the bioreactor that comparison loads | |
| CN220490600U (en) | Simple indentation device | |
| CN206913161U (en) | A kind of universal adjustment device and apply its medical robot | |
| CN215687847U (en) | Clinical nutrition detection analyzer | |
| CN112114210A (en) | Product electromagnetic compatibility test system | |
| CN202057561U (en) | Micropressure test experimental device for berries | |
| CN111820923A (en) | Psychological testing device | |
| CN214667615U (en) | Handle detection test bench |