CN207081605U - Biologic soft tissue Mechanics Performance Testing device under a kind of cutting operation - Google Patents
Biologic soft tissue Mechanics Performance Testing device under a kind of cutting operation Download PDFInfo
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- CN207081605U CN207081605U CN201721154344.3U CN201721154344U CN207081605U CN 207081605 U CN207081605 U CN 207081605U CN 201721154344 U CN201721154344 U CN 201721154344U CN 207081605 U CN207081605 U CN 207081605U
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- soft tissue
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- cutting operation
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Abstract
Biologic soft tissue Mechanics Performance Testing device under a kind of cutting operation, it is related to a kind of soft tissue mechanics performance testing device, to solve the problems, such as that existing biologic soft tissue Mechanics Performance Testing device can not determine pretension under cutting operation, and then according to experiment gathered data, extracting mechanics model needs to obtain characteristic parameter, establishes the constitutive relation of soft tissue ess-strain.It includes the lifting platform of workbench, lifting cutter device, horizontal drag device and fixed biologic soft tissue；The lifting platform of lifting cutter device, horizontal drag device and fixed biologic soft tissue is installed on the upper surface of the workbench；The lifting movable end of lifting cutter device is provided with cutter, and lifting platform is arranged in the underface of lifting cutter device, the biologic soft tissue for Mechanics Performance Testing is clamped between the horizontal anomalous movement end of horizontal drag device and lifting platform.The utility model is used for mechanical property of the test biology soft tissue under cutting operation.
Description
Technical field
A kind of soft tissue mechanics performance testing device is the utility model is related to, belongs to material mechanical performance testing technology neck
A kind of domain, and in particular to test device of the test biology soft tissue mechanics performance under cutting operation.
Background technology
Biomethanics is to study the subject of relation between power and organism motion, physiology, pathology, be applied mechanics principle with
Method carries out the biophysics branch of quantitative study to the mechanics problem in organism.Study biological organization mechanicses, test life
Thing organization mechanicses performance characteristic recognizes its growth, senescence law, and be medical diagnosis for disclosing biological tissue's mechanical mechanism
There is provided theoretical reference with treatment has important practical usage.In addition, biological tissue's mechanical property research, can be Surgery Simulation training
Realize that real power feels that emulation is provided fundamental basis in system.
The soft tissues such as internal organs, muscle in biological structure are nonlinear viscoelasticity body, and its mechanical characteristic is complicated, structural state
Change over time with larger difference, and as the progress of operation technique, the topological structure of tissue change, boundary condition
It is extremely complex.Existing biologic soft tissue mechanic property test method has impression detection, ultrasound examination.Impression detection device is
Soft tissue mechanics performance is analyzed using the length and the change of tension force that occur when stretching soft tissue；Ultrasound examination utilizes ultrasound
Ripple and pressure 6 DOF sensor group measure the stress-strain information of biologic soft tissue into sensor-based system, extract the characteristic of soft tissue
Parameter.
The domestic research to soft tissue mechanics performance is started late, and application number 201420044704.4, publication date be
2014.01.23 utility model patent disclose one kind《A kind of biologic soft tissue cutting test device》, with higher speed with
Acceleration is cut biologic soft tissue and realizes the automatic measurement to whole working angles under the control of the computer, test speed
Degree is fast, and precision is high, can quickly establish typical soft tissue Database in Cutting Database by cutting test, but the device does not include cutting
When the pretension of biologic soft tissue is measured, therefore the mechanical characteristic of description biologic soft tissue that can not be complete；Patent
Disclosed in CN102018575A《Robot assisted flexibility pin puncture soft tissue real-time control system and method》Propose a kind of soft
The control method and equipment of property pin, but flexible needle model is confined to two-dimentional puncture, needle point stress and tip position in the patent
Error be present using the model data of model prediction, while the motion of needle point more single can only measure punctures and can not obtained in real time
Obtain more models；Application number 201610117830.1, the patent of invention that publication date is 2016.03.02 disclose one kind《One
Kind biologic soft tissue Mechanics Performance Testing device》, using the device can test biology be organized in lifting, pressing and the operation such as puncture
Under mechanical model.
Utility model content
The utility model provides biologic soft tissue Mechanics Performance Testing device under a kind of cutting operation, solves existing biology
Soft tissue mechanics performance testing device can not determine the problem of pretension under cutting operation, and then according to experiment gathered data, carry
Characteristic parameter is obtained needed for power taking model, establishes the constitutive relation of soft tissue ess-strain.
To achieve these goals, technical solution adopted in the utility model is：
Biologic soft tissue Mechanics Performance Testing device includes workbench, lifting cutter device, level under a kind of cutting operation
The lifting platform of pulling device and fixed biologic soft tissue；
Lifting cutter device, horizontal drag device and fixed biologic soft tissue are installed on the upper surface of the workbench
Lifting platform；The lifting movable end of lifting cutter device is provided with cutter, and lifting platform is arranged in the underface of lifting cutter device, water
The biologic soft tissue for Mechanics Performance Testing is clamped between the horizontal anomalous movement end of flat pulling device and lifting platform.
Further, cutter includes the base of tool and is connected to the blade of base of tool lower end.
Further, lifting cutter device includes secondary lifting motor, elevating screw, connecting plate and pressure sensor；
The secondary leading screw of elevating screw is vertically arranged and is rotatablely installed the output end connection elevating screw on the table, lifting motor
The top of secondary leading screw, connecting plate is installed on the secondary screw of elevating screw, be provided between connecting plate and the base of tool and the two
The pressure sensor of connection.
Further, horizontal drag device includes presser device, pulling force sensor, sensor holder, horizontal screw lead pair and water
Flat motor；Horizontal screw lead pair is horizontally mounted on the table, the output end connection horizontal screw lead pair of horizontal drive motor
Leading screw, sensor holder is installed on the secondary screw of horizontal screw lead, is disposed between presser device and sensor holder and is connected with the two
Pulling force sensor.
Further, lifting platform includes slide with groove and the slide unit with sliding block, and the sliding block can be in the groove
Slide, slide is detachably connected with slide unit, and slide unit is provided with the pressing plate of fixed biologic soft tissue.
Further, presser device includes upper lower pliers head, and lower pliers head is L shaped plate, the short slab and pulling force sensor of lower pliers head
It is connected, upper grip head is a flat board, and flat board is removably mounted on the long slab of lower pliers head, and flat board is provided with and contacted with biologic soft tissue
Clamping line, be clamped with biologic soft tissue between the flat board and the pressing plate.
The beneficial effect of the utility model compared with prior art is：
1st, the mechanical device of leading screw auxiliary driving is driven from motor so that test device possesses linear motion capability, realizes
The operation of cutting.
The 2nd, force snesor is installed between screw and end effector mechanism (cutter) reach measurement cutting force and tissue in real time
The purpose of the relation of deformation.
3rd, test device also comprising can pressing element biologic soft tissue is fixed and that primary clamp force can be provided, with
This come prevent biologic soft tissue due to creep and stress relaxation etc. it is viscoelastic influence and slipped in cutting process.In experiment,
The power being subject to force sensor measuring soft tissue in cutting process.Pass through the range analysis to power and displacement curve and variance point
Final mechanical model is established in analysis.
4th, the test device provides pretension for soft tissue by horizontal drag device and cut in order to be realized in desired location,
Cutting operation to soft tissue is realized by vertical cutter device, the fixation and position adjustment to soft tissue are realized by workbench, should
Cutting force is gathered with force snesor.Correlation experiment is carried out using the test device, mechanical property can extract according to statistical result
Energy characteristic parameter, establish the constitutive relation of stress-strain under cutting operation.
Brief description of the drawings
Fig. 1 is axonometric drawing of the present utility model；
Fig. 2 is the structural representation of workbench 1；
Fig. 3 is the structural representation for lifting cutter device 2；
Fig. 4 is cutter 2-5 structural representation；
Fig. 5 is Fig. 4 sectional view；
Fig. 6 is the structural representation of horizontal drag device 3；
Fig. 7 is the structural representation of lifting platform 4.
Embodiment
The technical solution of the utility model is further described with reference to the accompanying drawings and detailed description：
Illustrate referring to Fig. 1-Fig. 7, under a kind of cutting operation biologic soft tissue Mechanics Performance Testing device include workbench 1,
Lift the lifting platform 4 of cutter device 2, horizontal drag device 3 and fixed biologic soft tissue；
Lifting cutter device 2, horizontal drag device 3 and fixed soft group of biology are installed on the upper surface of the workbench 1
The lifting platform 4 knitted；The lifting movable end of lifting cutter device 2 is provided with cutter 2-5, and lifting platform 4 is arranged in lifting cutter device 2
Underface, be clamped between the horizontal anomalous movement end of horizontal drag device 3 and lifting platform 4 for the biological soft of Mechanics Performance Testing
Tissue.
In order to ensure that biologic soft tissue is effectively cut, referring to shown in Fig. 4 and Fig. 5, cutter 2-5 include base of tool 2-5-1 and
It is connected to the blade 2-5-2 of base of tool 2-5-1 lower ends.In order to study the influence of Soft tissue cutting power, make also for easy to operation
With, it is preferable that blade uses No. 10 or No. 11 medical operation blades, although both blades can be installed according on No. 3 handle of a knifes
The shape and size in hole are essentially identical, still, in order to study influence of the different cut-in angles to cutting force, the present utility model application
The self-control base of tool and cutter are as shown in figure 4, the cutter can make blade to adjust the angle that blade is installed, the knife when mounted
Tool seat 2-5-1 upper ends are threaded the disk in hole, and lower end mills out two planes in the side of cylinder and is easy to be fitted close with blade,
Blade angle is adjusted before experiment and is fixed with nut.
Illustrate referring to Fig. 3, in one embodiment, lifting cutter device 2 includes lifting motor 2-1, elevating screw
Secondary 2-2, connecting plate 2-3 and pressure sensor 2-4；Elevating screw secondary 2-2 leading screw is vertically arranged and is rotatably installed in workbench 1
On, the top of lifting motor 2-1 output end connection elevating screw secondary 2-2 leading screw, elevating screw secondary 2-2 screw 2-
Connecting plate 2-3 is installed on 2-1, the pressure sensor 2- being connected with the two is installed between connecting plate 2-3 and base of tool 2-5-1
4.It is arranged such, elevating screw secondary 2-2 uses ball screw assembly, and herein, lifting motor 2-1 uses stepper motor, such as
This accurate positioning, speed governing are reliable.Pressure sensor 2-4 preferable amounts journey is 10N, and appearance and size is Φ 42 MIK-LCL buttons
Type pressure sensor.As an embodiment, horizontal drag device 3 includes presser device 3-2, pulling force sensor 3-3, passed
Sensor seat 3-4, horizontal screw lead secondary 3-5 and horizontal drive motor 3-6；Horizontal screw lead secondary 3-5 is horizontally arranged on workbench 1, water
Flat motor 3-6 output end connects horizontal screw lead secondary 3-5 leading screw, is provided with horizontal screw lead secondary 3-5 screw 3-5-1
Sensor holder 3-4, the pulling force sensor 3-3 being connected with the two is disposed between presser device 3-2 and sensor holder 3-4.At this
In, horizontal screw lead secondary 3-5 uses ball screw assembly, and horizontal drive motor 3-6 uses stepper motor, such accurate positioning, speed governing
Reliably.Pulling force sensor 3-3 preferable amounts journey is 10N MIK-LCS1 type pulling force sensors.So, pressure sensor and pulling force
Sensor can test the power that soft tissue is subject in cutting process and soft tissue well by the tensile force of fixed clamp.
In another embodiment, in order to ensure that biologic soft tissue adapts to different height and the needs of cutting test, referring to
Fig. 7 illustrates that lifting platform 4 includes the slide 4-1 with groove and slide unit 4-2 with sliding block, and the sliding block can be slided in the groove
Dynamic, slide 4-1 is detachably connected with slide unit 4-2, and slide unit 4-2 is provided with the pressing plate 4-2-1 of fixed biologic soft tissue.Herein,
In order to preferably clamp biologic soft tissue, tooth form line is also machined with pressing plate 4-2-1, to improve chucking power.It is recessed on slide 4-1
Groove can be rectangular channel, dovetail groove or dovetail groove, and the sliding block on slide unit 4-2 is set with matching grooves.So slide unit 4-2 can be in cunning
Make vertical direction movement on seat 4-1, can be fixed after determining height by the use of thinner soket head cap screw as jackscrew.
As an embodiment, illustrating referring to Fig. 6, presser device 3-2 includes upper lower pliers head, and lower pliers head is L shaped plate,
The short slab of lower pliers head is connected with pulling force sensor 3-3, and upper grip head is a flat board, and flat board is removably mounted at the long slab of lower pliers head
On, there is the clamping line contacted with biologic soft tissue, the flat board is used to clamp soft group of biology with the pressing plate 4-2-1 on flat board
Knit.Among upper grip head and soft tissue contact portion is tooth form line or ripple type, and both sides are connected by bolt with lower pliers head.By soft group
The size for being put in and changing chucking power between two binding clips by nutting is knitted, passes through the horizontal shifting of horizontal screw lead secondary 3-5 screw
The dynamic size for changing incipient extension power.It is so designed that, it is firm to be clamped on the premise of not injury tissue, and and can provides
Certain incipient extension power.As a preferred embodiment, the connecting plate 2-3 is L shaped plate, connecting plate 2-3 side
Plate connection elevating screw secondary 2-2 screw, connecting plate 2-3 another side plate connection pressure sensor 2-4.Workbench 1 includes bottom
Plate 1-1, side plate 1-2 and levelling gear 1-3；Side plate 1-2 is vertically arranged and is arranged on bottom plate 1-1, the elevating screw secondary 2-2
On the side plate 1-2, bottom plate 1-1 bottom is provided with the levelling gear 1-3 that bottom plate 1-1 can be kept horizontal.Further
Ground, levelling gear 1-3 include several sloped footings 1-3-1, and several sloped footings 1-3-1 is threaded on bottom plate 1-1.
, can be by finely tuning levelling gear 1-3 sloped footing 1-3-1 so that workbench is protected when face is uneven residing for workbench
Water holding is put down.It is so designed that, enables to biologic soft tissue to be at horizontal position when mounted with horizontal drag device 3
Put.
The course of work
1st, leveling worktable, lifting motor is opened, it is ensured that the secondary screw of elevating screw slides smooth and vertically-mounted
Lead screw pair being capable of self-locking.
2nd, from the Pig Liver cut along longitudinal texture, its one end is fixed under the pressing plate of lifting platform, the other end
It is fixed in the binding clip of soft tissue presser device.By nut, ensure that pork liver will not slip under certain incipient extension power.
3rd, medical operation blade is arranged on the base of tool, rotating blade makes itself and vertical direction angle be 10 °, Ran Houyong
Nut is fixed.
4th, the horizontal drive motor of horizontal drag device is opened, horizontal screw lead subband binding clip stretching biologic soft tissue,
When the tensile force gathered on observed data capture card is slightly larger than 2N (the stress relaxation characteristics meeting recovered part deformation of soft tissue), close
Close horizontal drive motor.
5th, the lifting motor on vertical cutter device is opened, sets the speed of end effector mechanism (cutter) as 2mm/
S, open data collecting card and carry software, the cutting force when point of a knife contacts pork liver under each displacement of start recording point of a knife.When cutting
When cutting power and almost tending towards stability, lifting motor is closed, preserves data.
The data collecting card that the utility model uses is USB3253, A/D types, and range is chosen by the scope of input signal,
100 hertz are selected using frequency,
The utility model is disclosed as above with preferable case study on implementation, but is not limited to the utility model, any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, according to the technical essence of the utility model
Any simple modification, equivalent change and modification done to above case study on implementation, still belongs to technical solutions of the utility model scope.
Claims (9)
- A kind of 1. biologic soft tissue Mechanics Performance Testing device under cutting operation, it is characterised in that：It includes workbench (1), risen The lifting platform (4) of cutter device (2), horizontal drag device (3) and fixed biologic soft tissue drops；Lifting cutter device (2), horizontal drag device (3) and fixed biology are installed soft on the upper surface of the workbench (1) The lifting platform (4) of tissue；The lifting movable end of lifting cutter device (2) is provided with cutter (2-5), and lifting platform (4) is arranged in liter The underface of cutter device (2) is dropped, is clamped between the horizontal anomalous movement end of horizontal drag device (3) and lifting platform (4) for power Learn the biologic soft tissue of performance test.
- A kind of 2. biologic soft tissue Mechanics Performance Testing device under cutting operation according to claim 1, it is characterised in that：Institute Stating cutter (2-5) includes the base of tool (2-5-1) and is connected to the blade (2-5-2) of the base of tool (2-5-1) lower end.
- A kind of 3. biologic soft tissue Mechanics Performance Testing device under cutting operation according to claim 2, it is characterised in that：Rise Dropping cutter device (2) includes lifting motor (2-1), elevating screw secondary (2-2), connecting plate (2-3) and pressure sensor (2- 4)；The leading screw of elevating screw pair (2-2) is vertically arranged and is rotatably installed on workbench (1), lifting motor (2-1) The top of the leading screw of output end connection elevating screw secondary (2-2), the company of being provided with the screw (2-2-1) of elevating screw pair (2-2) Fishplate bar (2-3), the pressure sensor being connected with the two (2-4) is installed between connecting plate (2-3) and the base of tool (2-5-1).
- 4. existed according to biologic soft tissue Mechanics Performance Testing device, its feature under a kind of cutting operation of claim 1,2 or 3 In：Horizontal drag device (3) includes presser device (3-2), pulling force sensor (3-3), sensor holder (3-4), horizontal screw lead pair (3-5) and horizontal drive motor (3-6)；Horizontal screw lead pair (3-5) is horizontally arranged on workbench (1), and the output end of horizontal drive motor (3-6) connects horizontal silk Thick stick pair (3-5) leading screw, horizontal screw lead pair (3-5) screw (3-5-1) on sensor holder (3-4), presser device (3- are installed 2) pulling force sensor being connected with the two (3-3) is disposed between sensor holder (3-4).
- A kind of 5. biologic soft tissue Mechanics Performance Testing device under cutting operation according to claim 4, it is characterised in that：Rise Drop platform (4), which includes slide with groove (4-1) and the slide unit (4-2) with sliding block, the sliding block, to be slided in the groove, sliding Seat (4-1) is detachably connected with slide unit (4-2), and slide unit (4-2) is provided with the pressing plate (4-2-1) of fixed biologic soft tissue.
- A kind of 6. biologic soft tissue Mechanics Performance Testing device under cutting operation according to claim 5, it is characterised in that：Pressure Tool device (3-2) includes upper lower pliers head, and lower pliers head is L shaped plate, and the short slab of lower pliers head is connected with pulling force sensor (3-3), upper pincers Head is a flat board, and flat board is removably mounted on the long slab of lower pliers head, and flat board is provided with the clamping line contacted with biologic soft tissue, The flat board is used to clamp biologic soft tissue with the pressing plate (4-2-1).
- 7. existed according to biologic soft tissue Mechanics Performance Testing device, its feature under a kind of cutting operation of claim 3,5 or 6 In：The connecting plate (2-3) is L shaped plate, and the side plate of connecting plate (2-3) connects elevating screw secondary (2-2) screw, connecting plate Another side plate connection pressure sensor (2-4) of (2-3).
- A kind of 8. biologic soft tissue Mechanics Performance Testing device under cutting operation according to claim 7, it is characterised in that：Work Making platform (1) includes bottom plate (1-1), side plate (1-2) and levelling gear (1-3)；Side plate (1-2) is vertically arranged and is arranged on bottom plate On (1-1), the elevating screw secondary (2-2) is arranged on the side plate (1-2), and the bottom of bottom plate (1-1) is provided with and can kept The horizontal levelling gear (1-3) of bottom plate (1-1).
- A kind of 9. biologic soft tissue Mechanics Performance Testing device under cutting operation according to claim 8, it is characterised in that：Institute Stating levelling gear (1-3) includes several sloped footings (1-3-1)；Several sloped footings (1-3-1) are threaded in bottom plate On (1-1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721154344.3U CN207081605U (en) | 2017-09-08 | 2017-09-08 | Biologic soft tissue Mechanics Performance Testing device under a kind of cutting operation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721154344.3U CN207081605U (en) | 2017-09-08 | 2017-09-08 | Biologic soft tissue Mechanics Performance Testing device under a kind of cutting operation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN108890114A (en) * | 2018-07-20 | 2018-11-27 | 太原理工大学 | Impulse electric field and the metal-base composites of ultrasonic field auxiliary are sintered synchronized links method and device |
| CN109932247A (en) * | 2019-04-23 | 2019-06-25 | 四川大学华西医院 | A kind of detection device and method of Aortic Dissection blood vessel biomechanical property |
| CN111024289A (en) * | 2019-12-31 | 2020-04-17 | 上海交通大学医学院附属第九人民医院 | Soft tissue biomechanical parameter measuring method and system |
| CN112504535A (en) * | 2020-12-27 | 2021-03-16 | 江西现代职业技术学院 | Mechanical measurement device in flexible material surface cutting process |
-
2017
- 2017-09-08 CN CN201721154344.3U patent/CN207081605U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108760489B (en) * | 2018-05-08 | 2021-04-02 | 北京工业大学 | Device and method for measuring biomechanical parameters of skin soft tissues |
| CN108890114A (en) * | 2018-07-20 | 2018-11-27 | 太原理工大学 | Impulse electric field and the metal-base composites of ultrasonic field auxiliary are sintered synchronized links method and device |
| CN109932247A (en) * | 2019-04-23 | 2019-06-25 | 四川大学华西医院 | A kind of detection device and method of Aortic Dissection blood vessel biomechanical property |
| CN109932247B (en) * | 2019-04-23 | 2023-09-19 | 四川大学华西医院 | Device and method for detecting biomechanical properties of aortic dissection lesion blood vessel |
| CN111024289A (en) * | 2019-12-31 | 2020-04-17 | 上海交通大学医学院附属第九人民医院 | Soft tissue biomechanical parameter measuring method and system |
| CN112504535A (en) * | 2020-12-27 | 2021-03-16 | 江西现代职业技术学院 | Mechanical measurement device in flexible material surface cutting process |
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