CN108937851A - Bone mechanical performance measuring device - Google Patents
Bone mechanical performance measuring device Download PDFInfo
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- CN108937851A CN108937851A CN201810507849.6A CN201810507849A CN108937851A CN 108937851 A CN108937851 A CN 108937851A CN 201810507849 A CN201810507849 A CN 201810507849A CN 108937851 A CN108937851 A CN 108937851A
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 115
- 239000000523 sample Substances 0.000 claims abstract description 113
- 238000005259 measurement Methods 0.000 claims abstract description 56
- 238000006073 displacement reaction Methods 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 230000005389 magnetism Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 abstract description 17
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 230000037182 bone density Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012623 in vivo measurement Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Classifications
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- 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
- A61B5/4504—Bones
-
- 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
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6848—Needles
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Public Health (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Rheumatology (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
The present invention provides a kind of bone mechanical performance measuring devices, including casing, sampling module, auxiliary block for measuring known Young's modulus stress-strain data supplementary module and driving mechanism, sampling module includes reference probe, measures probe, displacement sensor, for measuring first force snesor and bracket of the measurement probe by resistance, supplementary module includes assist probes, the second force snesor, the supporting element and support for supporting the second force snesor, and supporting element is fixedly linked with bracket.The present invention then measures the ess-strain of the auxiliary block of known Young's modulus by setting supplementary module in assist probes, and measurement probe measures the ess-strain of bone simultaneously, and then combined stress strain curve when available auxiliary block is combined with bone；And when being not provided with auxiliary block, measure the stress-strain diagram of the available bone of probe；So as to be fitted to obtain the Young's modulus of bone according to the known Young's modulus of two groups of stress-strain diagrams and auxiliary block.
Description
Technical field
The invention belongs to field of medical technology, are to be related to a kind of bone mechanical performance measuring device more specifically.
Background technique
Bone is the important component of organization of human body, and the quality of bone refers to resist the ability of fracture.For bone
The measurement of risk is rolled over, bone density is an extremely important parameter.But studies have shown that bone density can not reliably and effectively predict bone
The risk of folding.Clinical practice shows that a large amount of high risk fracture cases have been sieved in skeleton density test leakage.Bone is by mineral and organic matter structure
At, to the measurement of bone be divided into three aspect: the density of bone, the structure of bone and mechanical performance (Chavassieux, the Seeman et of bone
al.2007).Wherein the density of bone and the structure of bone are generally measured by dual-energy x-ray absorption equipment (DEXA) and CT respectively.Bone is close
Degree and bone structure can not reflect the quality of bone comprehensively, and the mechanical performance of bone can provide more fully important information.In bone
Mechanical performance parameter in, bone Young's modulus is a parameter that is the most frequently used and can most reacting risk of bone fracture.Therefore, how
Accurately become the key of problem in people's in-vivo measurement bone Young's modulus.Current device measures bone Young's modulus, usually logical
It crosses setting reference probe to be pressed on bone, then measurement probe is supported into bone, pass through displacement sensor and force sensor measuring
Probe is inserted into bone depth and pressure, to obtain bone stress strain data accordingly, and calculates the Young's modulus of bone.However this
Kind mode is difficult to accurately obtain bone stress strain data, leads to measurement inaccuracy；And it is difficult to the ess-strain number by measuring
According to the Young's modulus for accurately calculating bone.
Summary of the invention
The purpose of the present invention is to provide a kind of bone mechanical performance measuring devices, to solve existing in the prior art be difficult to
The problem of accurately measuring bone Young's modulus.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of bone mechanical performance measuring device is provided, including
Casing and sampling module, the sampling module include the reference probe being installed on the casing, sliding be plugged in the reference
Measurement probe in probe, the displacement sensor for measuring the measurement probe moving distance are visited for measuring the measurement
Needle is passed by the first force snesor of resistance and the bracket of support first force snesor, the measurement probe and the displacement
Sensor is connected, and institute's displacement sensors are connected with first force snesor, and institute's displacement sensors are supported in the casing,
The bone mechanical performance measuring device further includes the auxiliary for the stress-strain data for measuring the auxiliary block of known Young's modulus
Module, the supplementary module include measuring probe synchronizing moving and the assist probes for detecting the auxiliary block, use with described
By the second force snesor of resistance, support second force snesor when measuring the assist probes and supporting the auxiliary block
Supporting element and be used to support the support of the auxiliary block, the support is connected with the casing, the assist probes with it is described
Second force snesor is connected, the supporting element is fixedly linked with the bracket, is also equipped in the casing described for driving
The mobile driving mechanism to push the measurement probe and the assist probes synchronizing moving of bracket.
Further, the structure of the front end of the assist probes is identical as the measurement structure of front end of probe.
Further, the support includes for placing and supporting the charge chute of auxiliary block and support the material of the charge chute
Slot support, the charge chute are slidably mounted in the hopper support, and the hopper support is installed in the casing.
Further, the charge chute is magnetic conductive part, and the magnetic for charge chute described in magnetic is equipped in the hopper support
Block.
Further, further include the interface block being connected with the reference probe, offered in the interface block for the survey
The through-hole that amount probe passes through, the interface block are connected with the casing, and the interface block is connected with the casing.
It further, further include magnetic axis, one end of the magnetism axis is connected with the measurement probe, the magnetism axis
The other end is connected with institute's displacement sensors.
Further, further include fixed link, one end of the fixed link is connected with the bracket, the fixed link it is another
End is connected with first force snesor.
Further, the fixed link is protruding with positioning plate, and the positioning plate is fixedly linked with the bracket.
Further, further include connecting rod that both ends are separately connected first force snesor Yu institute's displacement sensors.
Further, the driving mechanism is voice coil motor.
The beneficial effect of bone mechanical performance measuring device provided by the invention is: compared with prior art, the present invention is logical
Setting supplementary module is crossed, assist probes and measurement probe synchronizing moving are made, then can measure known Young mould by assist probes
The ess-strain of the auxiliary block of amount, and measure probe while measuring the ess-strain of bone, and then available auxiliary block and bone
Combined stress strain curve when bone combines；And when being not provided with auxiliary block in supplementary module, measure the available bone of probe
Stress-strain diagram；So as to be fitted to obtain bone according to the known Young's modulus of two groups of stress-strain diagrams and auxiliary block
Young's modulus.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of bone mechanical performance measuring device provided in an embodiment of the present invention；
Fig. 2 is the enlarged drawing of part A in Fig. 1；
Fig. 3 is the schematic cross-sectional view of the bone mechanical performance measuring device of Fig. 1；
Fig. 4 is the enlarged drawing of part-structure in Fig. 3；
Fig. 5 is the partial structure diagram one of the bone mechanical performance measuring device of Fig. 1；
Fig. 6 is the partial structure diagram two of the bone mechanical performance measuring device of Fig. 1；
Fig. 7 is the decomposition diagram one of the part-structure of sampling module in Fig. 6；
Fig. 8 is the decomposition diagram two of the part-structure of sampling module in Fig. 6；
Fig. 9 is the enlarged structure schematic diagram of reference probe in Fig. 8.
Wherein, each attached drawing main mark in figure:
10- casing；11- shell；12- front housing；121- convex mouth；13- rear cover；131- cable-through hole；14- mounting bracket；
20- sampling module；21- reference probe；210- through hole；211- attachment base；22- measures probe；23- displacement sensing
Device；231- fixed plate；The first force snesor of 24-；25- bracket；251- mounting base；252- connecting plate；26- fixed link；261- is fixed
Position plate；262- second location hole；27- magnetism axis；271- first positioning hole；272- connecting shaft；28- interface block；281- through-hole；29-
Connecting rod；The big head section of 291-；2911- third location hole；The small head section of 292-；
30- supplementary module；31- assist probes；311- support base；The second force snesor of 32-；33- supporting element；34- support；
341- charge chute；342- hopper support；343- magnetic patch；40- driving mechanism；90- auxiliary block.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined." several " are meant that one or more, unless otherwise specifically defined.
In the description of the present invention, it is to be understood that, term " center ", " length ", " width ", " thickness ", "upper",
The orientation or position of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitation of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside two elements.It for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
Also referring to Fig. 1 to Fig. 9, now bone mechanical performance measuring device provided by the invention is illustrated.The bone
Mechanical performance measuring device, including casing 10, sampling module 20, supplementary module 30 and driving mechanism 40；Sampling module 20 is used to
Bone stress-strain data is acquired, to obtain the stress-strain diagram of bone；Supplementary module 30 is for measuring known Young's modulus
Auxiliary block 90 stress-strain data, to obtain the stress-strain diagram of auxiliary block 90；Driving mechanism 40 is used to as sampling mould
Block 20 and the work of supplementary module 30 provide power.Sampling module 20 includes reference probe 21, measurement probe 22, displacement sensor
23, the first force snesor 24 and bracket 25, the measurement sliding of probe 22 is plugged in reference probe 21, thus edge in reference probe 21
Its axial direction offers through hole 210, and reference probe 21 is installed on casing 10, with by casing 10 come fixed reference probe 21,
To reference probe 21 and measurement probe 22 are inserted into human body simultaneously, reference probe 21 is made to rest on bone group in measurement
The surface knitted provides reference to measure the movement of probe 22, while carrying out protection probe 22 by reference to probe 21, avoids surveying
Amount probe 22 is influenced in measurement by other cell tissues.Displacement sensor 23 for measure measurement probe 22 it is mobile away from
From measurement probe 22 is connected with displacement sensor 23；Displacement sensor 23 is supported in casing 10, and displacement sensor 23 with
First force snesor 24 is connected.First force snesor 24 is for measuring measurement probe 22 by resistance, the first force snesor 24 peace
Loaded on bracket 25, supporting the first force snesor 24 by bracket 25.Supplementary module 30 includes assist probes 31, the second power biography
Sensor 32, supporting element 33 and support 34；Support 34 is connected with casing 10, and support 34 is used to support auxiliary block 90；Assist probes 31
It is connected with the second force snesor 32, the second force snesor 32 is installed on supporting element 33, supports second by supporting element 33
Force snesor 32, assist probes 31 are for detecting auxiliary block 90, and assist probes 31 and measurement 22 synchronizing moving of probe；Second
Force snesor 32 is for measuring when assist probes 31 support auxiliary block 90 by resistance；Supporting element 33 is fixedly linked with bracket 25,
Bracket 25 is connected with driving mechanism 40, pushes bracket 25 mobile by driving mechanism 40, so drive measurement probe 22 with it is auxiliary
Help 31 synchronizing moving of probe.
Bone mechanical performance measuring device provided by the invention, compared with prior art, the present invention pass through setting supplementary module
30, make assist probes 31 and measurement 22 synchronizing moving of probe, then can measure the auxiliary of known Young's modulus by assist probes 31
The ess-strain of block 90 is helped, and measures probe 22 while measuring the ess-strain of bone, and then available auxiliary block 90 and bone
Combined stress strain curve when bone combines；And when being not provided with auxiliary block 90 in supplementary module 30, measurement probe 22 can obtain
To the stress-strain diagram of bone；So as to quasi- according to the known Young's modulus of two groups of stress-strain diagrams and auxiliary block 90
Conjunction obtains the Young's modulus of bone.
The bone mechanical performance measuring device when in use, can not place auxiliary block 90 first on support 34；It will be with reference to spy
Needle 21 and measurement probe 22 are inserted into human body, and reference probe 21 is made to be against bone surface, and driving mechanism 40 pushes measurement probe 22 to stretch
Enter reference probe 21, and be pressed into bone, and the stress of one group of bone is obtained by displacement sensor 23 and the first force snesor 24
Strain data, and the stress-strain diagram of a bone is made；Measurement probe 22 is resetted, is placed in support 34 in auxiliary block 90
In, it detects again, due to measurement probe 22 and 31 synchronizing moving of assist probes, the second force snesor 32 can measure assist probes
31 stress condition, the first force snesor 24 can measure the stress condition of measurement probe 22, by the first force snesor 24 and the
Two force snesors, 32 stress is added and the measurement data of displacement sensor 23, the combination of available bone and auxiliary block 90
Stress-strain data obtains second group of stress-strain diagram, and due to the Young's modulus of auxiliary block 90 it is known that so as to by two
Group stress-strain diagram carries out fitting of a polynomial, then the Young's modulus of available bone, and measurement is accurate, can preferably measure
The mechanical performance of bone.Certainly, in measurement, multi-group data can be measured, more accurately to be measured the mechanical performance of bone.
Further, Fig. 2, fig. 4 to fig. 6 are please referred to, one kind as bone mechanical performance measuring device provided by the invention
The structure of specific embodiment, the front end of assist probes 31 is identical as the measurement structure of front end of probe 22, i.e. assist probes 31
The shape of the front end of the shape and size and measurement probe 22 of front end is identical as size, assists to make to detect in assist probes 31
It is identical as far as possible in the condition of detection bone as measurement probe 22 when block 90, to reduce measurement error.
Further, Fig. 2, fig. 4 to fig. 6 are please referred to, one kind as bone mechanical performance measuring device provided by the invention
Specific embodiment, the front end of measurement probe 22 is in cone, when to be inserted into bone, respectively to uniform force, reduces measurement
Error.Further, the range of taper for measuring the front end of probe 22 is 60-120 degree.Preferentially, the front end of probe 22 is measured
Taper is 90 degree, to reduce additional consumption when measurement, facilitates access for bone and convenient for calculating biomechanics of bone performance parameter.Material choosing
With stainless steel, guarantee that measurement probe 22 is unlikely to deform into bone.
Further, Fig. 2, Fig. 4 and Fig. 9 are please referred to, one kind as bone mechanical performance measuring device provided by the invention
Specific embodiment, the rear end of reference probe 21 are provided with attachment base 211, are connected with facilitating with casing 10.
Further, Fig. 2, Fig. 4 and Fig. 9 are please referred to, one kind as bone mechanical performance measuring device provided by the invention
The side of specific embodiment, the front end of reference probe 21 is equipped with notch, to facilitate in insertion human body.
Further, Fig. 2, fig. 4 to fig. 6 are please referred to, one kind as bone mechanical performance measuring device provided by the invention
Specific embodiment, support 34 include charge chute 341 and hopper support 342, and hopper support 342 is used to support charge chute 341, charge chute
341 are slidably mounted in hopper support 342, and hopper support 342 is installed in casing 10, and charge chute 341 is for placing and supporting auxiliary
Block 90.The structure, which facilitates, places auxiliary block 90.
Further, Fig. 2, fig. 4 to fig. 6 are please referred to, one kind as bone mechanical performance measuring device provided by the invention
Specific embodiment, charge chute 341 are magnetic conductive part, and the magnetic patch 343 for magnetic charge chute 341 is equipped in hopper support 342.?
Magnetic patch 343 is installed in hopper support 342, fixes charge chute 341 so as to adsorb.
Further, Fig. 3 to Fig. 6 is please referred to, one kind as bone mechanical performance measuring device provided by the invention is specific
Embodiment, the bone mechanical performance measuring device further include the interface block 28 being connected with reference probe 21, are opened up in interface block 28
There is the through-hole 281 passed through for measurement probe 22, interface block 28 is connected with casing 10, and interface block 28 is connected with casing 10.The structure
Interface block 28 can be made relatively small, and be conveniently connected with reference probe 21.It specifically, can will be on reference probe 21
Attachment base 211 is fixedly linked with interface block 28.
Further, Fig. 3 to Fig. 6 is please referred to, one kind as bone mechanical performance measuring device provided by the invention is specific
Embodiment, the bone mechanical performance measuring device further include magnetic axis 27, and one end of magnetic axis 27 is connected with measurement probe 22, magnetic
The other end of property axis 27 is connected with displacement sensor 23.Magnetic axis 27 is set, is connected with facilitating and measuring 22 magnetic of probe.
Further, Fig. 3, Fig. 4, Fig. 7 and Fig. 8 are please referred to, as bone mechanical performance measuring device provided by the invention
A kind of specific embodiment, which further includes connecting shaft 272, and the both ends of connecting shaft 272 are separately connected magnetism
Axis 27 and displacement sensor 23.Connecting shaft 272 is set, magnetic axis 27 can be increased at a distance from displacement sensor 23, to be displaced
Sensor 23 can be measured preferably.Further, one end that cooperation is offered on magnetic axis 27 for connecting shaft 272 is inserted into
First positioning hole 271, connecting shaft 272 is connected with magnetic axis 27 with facilitating.The other end of connecting shaft 272 is inserted into displacement sensor 23
In, so that the inside moving member of displacement sensor 23 is preferably connected with connecting shaft 272.
Further, Fig. 3, Fig. 4, Fig. 7 and Fig. 8 are please referred to, as bone mechanical performance measuring device provided by the invention
A kind of specific embodiment, the bone mechanical performance measuring device further include fixed plate 231, and fixed plate 231 is by displacement sensor 23
It is fixed in casing 10, it is mobile with orientation displacement sensor 23, so as to preferably measure the moving member in displacement sensor 23
Moving distance.
Further, Fig. 3, Fig. 4, Fig. 7 and Fig. 8 are please referred to, as bone mechanical performance measuring device provided by the invention
A kind of specific embodiment, the bone mechanical performance measuring device further include fixed link 26, one end and 25 phase of bracket of fixed link 26
Even, the other end of fixed link 26 is connected with the first force snesor 24.Fixed link 26 is set, so as to by the first force snesor 24 and branch
Frame 25 is fixedly linked.Further, the end face of fixed link 26 offers second location hole 262, for the first force snesor 24
One end insertion, to position the first force snesor 24.
Further, Fig. 3, Fig. 4, Fig. 7 and Fig. 8 are please referred to, as bone mechanical performance measuring device provided by the invention
A kind of specific embodiment, fixed link 26 are protruding with positioning plate 261, and positioning plate 261 is fixedly linked with bracket 25.The structure,
Preferably fixed link 26 can be positioned, and then the first force snesor 24 is positioned.
Further, Fig. 3, Fig. 4, Fig. 7 and Fig. 8 are please referred to, as bone mechanical performance measuring device provided by the invention
A kind of specific embodiment, the bone mechanical performance measuring device further include that both ends are separately connected the first force snesor 24 and displacement biography
The connecting rod 29 of sensor 23.Connecting rod 29 is set, the first force snesor 24 is connected with displacement sensor 23, displacement can be passed
Sensor 23, which is spaced apart to displacement sensor 23 with the first force snesor 24, preferably to be measured.Further, even
Extension bar 29 includes big head section 291 and small head section 292, and the diameter of small head section 292 is less than the diameter of big head section 291, and small head section 292 is inserted
Enter in displacement sensor 23, is connected with the inside moving member of displacement sensor 23；The end face of big head section 291 offers third positioning
Hole 2911, so that the end of the first force snesor 24 can be inserted in third location hole 2911, and then convenient for positioning.
Further, Fig. 3 and Fig. 4 are please referred to, one kind as bone mechanical performance measuring device provided by the invention is specific
The rear end of embodiment, assist probes 31 is equipped with support base 311, is connected with facilitating with the second force snesor 32.Further,
The first locating slot is offered on support base 311, (is not marked in figure so that the first locating slot is inserted into one end of the second force snesor 32
In out), facilitate positioning.
Further, Fig. 3 and Fig. 4 are please referred to, one kind as bone mechanical performance measuring device provided by the invention is specific
Embodiment offers the second locating slot (not marking in figure) on supporting element 33, so as to by the other end of the second force snesor 32
It is inserted into the second locating slot, facilitates positioning.
Further, Fig. 3 and Fig. 4 are please referred to, one kind as bone mechanical performance measuring device provided by the invention is specific
Embodiment, the second force snesor 32 is identical as the model of the first force snesor 24, so as to the measurement error of two force snesors
It is close, so that the Young's modulus for the bone for obtaining fitting is more accurate.
Further, Fig. 3 to Fig. 6 is please referred to, one kind as bone mechanical performance measuring device provided by the invention is specific
Embodiment, driving mechanism 40 are that voice coil motor can be responded faster using voice coil motor, facilitate driving and control with same,
Make to measure more acurrate.
Further, Fig. 3 to Fig. 6 is please referred to, one kind as bone mechanical performance measuring device provided by the invention is specific
Embodiment, the bone mechanical performance measuring device further include mounting bracket 14, and driving mechanism 40 is fixed on casing by mounting bracket 14
In 10.Mounting bracket 14 is set, to install fixed drive mechanism 40.
Further, Fig. 3 to Fig. 6 is please referred to, one kind as bone mechanical performance measuring device provided by the invention is specific
Embodiment, bracket 25 include the mounting base 251 being connected with driving mechanism 40 and connecting plate 252, and connecting plate 252 is L-shaped, one
End is connected with mounting base 251；The other end of connecting plate 252 is connected with the first force snesor 24, and supporting element 33 and connecting plate 252 are solid
It is fixed to be connected.The structure facilitates the first force snesor of installation 24 and supporting element 33.In other embodiments, bracket 25 is also possible to one
Body formed structure.
Further, the one kind for please referring to Fig. 1, Fig. 3 to Fig. 4, as bone mechanical performance measuring device provided by the invention
Specific embodiment, the rear cover 13 that casing 10 includes shell 11, is placed on the front housing 12 of 11 front end of shell and is placed on 11 rear end of shell,
Aperture (not marking in figure) is offered in front housing 12, is passed through to measure probe 22.Specifically, fixed plate 231 is mounted on front housing
On 12.Support 34 is fixed on front housing 12.
Further, the one kind for please referring to Fig. 1, Fig. 3 to Fig. 6, as bone mechanical performance measuring device provided by the invention
Specific embodiment, interface block 28 are mounted on the front end of front housing 12.Further, convex mouth is convexly equipped on the front end face of front housing 12
121, interface block 28 is plugged in convex mouth 121, to facilitate fixed interface block 28.
Further, the one kind for please referring to Fig. 1, Fig. 3 to Fig. 4, as bone mechanical performance measuring device provided by the invention
Specific embodiment offers cable-through hole 131 on rear cover 13, so that data line can pass through inside 131 casing 10 of cable-through hole
Device is connected.
Further, the one kind for please referring to Fig. 1, Fig. 3 to Fig. 4, as bone mechanical performance measuring device provided by the invention
Specific embodiment, when which measures, the detection number of measurement probe 22 is 50-200 group data, excellent
It is first 100 groups of data, data of each micron of acquisition meet bone mechanical performance parameter to obtain enough data
The accuracy of calculating.Measuring movement speed range when probe 22 detects is 1*10-6m/s-5*10-6M/s is preferably 3.3*10- 6m/s.The measurement of one group of data can be completed with every 300 milliseconds by measuring probe 22, naturally it is also possible to for every 100-800 milliseconds completion
The measurement of one group of data.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. bone mechanical performance measuring device, including casing and sampling module, the sampling module includes being installed on the casing
Reference probe, sliding be plugged in the reference probe measurement probe, for measuring described measure probe moving distance
Displacement sensor, for measuring first force snesor and support first force snesor of the measurement probe by resistance
Bracket, the measurement probe are connected with institute's displacement sensors, and institute's displacement sensors are connected with first force snesor, institute
Displacement sensors are supported in the casing, it is characterised in that: the bone mechanical performance measuring device further includes for measuring
The supplementary module of the stress-strain data of the auxiliary block of known Young's modulus, the supplementary module include same with the measurement probe
Moved further and assist probes for detecting the auxiliary block, for measure when the assist probes support the auxiliary block by
Second force snesor of resistance, the supporting element of support second force snesor and the support for being used to support the auxiliary block, institute
Support to be stated to be connected with the casing, the assist probes are connected with second force snesor, the supporting element and the bracket
It is fixedly linked, is also equipped in the casing for driving the bracket mobile to push the measurement probe and the auxiliary to visit
The driving mechanism of needle synchronizing moving.
2. bone mechanical performance measuring device as described in claim 1, it is characterised in that: the structure of the front end of the assist probes
It is identical as the measurement structure of front end of probe.
3. bone mechanical performance measuring device as described in claim 1, it is characterised in that: the support includes for placing and propping up
It supports the charge chute of auxiliary block and supports the hopper support of the charge chute, the charge chute is slidably mounted in the hopper support, institute
Hopper support is stated to be installed in the casing.
4. bone mechanical performance measuring device as claimed in claim 3, it is characterised in that: the charge chute is magnetic conductive part, described
Magnetic patch for charge chute described in magnetic is installed in hopper support.
5. bone mechanical performance measuring device according to any one of claims 1-4, it is characterised in that: further include and the reference
The connected interface block of probe, offers the through-hole passed through for the measurement probe in the interface block, the interface block with it is described
Casing is connected, and the interface block is connected with the casing.
6. bone mechanical performance measuring device according to any one of claims 1-4, it is characterised in that: further include magnetic axis, institute
The one end for stating magnetic axis is connected with the measurement probe, and the other end of the magnetism axis is connected with institute displacement sensors.
7. bone mechanical performance measuring device according to any one of claims 1-4, it is characterised in that: it further include fixed link, institute
The one end for stating fixed link is connected with the bracket, and the other end of the fixed link is connected with first force snesor.
8. bone mechanical performance measuring device as claimed in claim 7, it is characterised in that: the fixed link is protruding with positioning
Plate, the positioning plate are fixedly linked with the bracket.
9. bone mechanical performance measuring device according to any one of claims 1-4, it is characterised in that: further include that both ends connect respectively
Connect the connecting rod of first force snesor Yu institute's displacement sensors.
10. bone mechanical performance measuring device according to any one of claims 1-4, it is characterised in that: the driving mechanism is
Voice coil motor.
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| CN201810507849.6A CN108937851B (en) | 2018-05-24 | 2018-05-24 | Bone mechanical property measuring equipment |
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| CN201810507849.6A CN108937851B (en) | 2018-05-24 | 2018-05-24 | Bone mechanical property measuring equipment |
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| CN108937851A true CN108937851A (en) | 2018-12-07 |
| CN108937851B CN108937851B (en) | 2023-12-01 |
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| CN108937851B (en) | 2023-12-01 |
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