CN209513411U - Test device - Google Patents

Abstract

The utility model provides a kind of test device, is related to the technical field of oral medical test equipment, for testing oral cavity root canal rotary NiTi-instruments anti-fatigue performance, including pedestal, mobile station, root canal simulated block and fixed bracket；Pass through the adjustable direction of motor fixing base, multiple groups mounting base is provided on motor fixing base, so as to be suitable for various motor-driven motor systems, it can be directly using root canal simulated block as measurement environment, it can also be using root canal simulated block and mobile station as fixture, in vitro people's tooth is fixed therebetween as measurement environment, alleviate model existing in the prior art and Isolated Tooth test device cannot achieve it is general, in addition, root canal simulated block has Multiple Type, every kind of model has various sizes of test trough, suitable for a variety of Ni-Ti rotary Instruments, avoid it is existing in the prior art because measurement method it is incompatible caused by between each result of study without comparativity, lack unified measurement standard, it realizes measurement and is more nearly clinical use environment.

Description

Test device

Technical field

The utility model relates to oral medical test equipment technical fields, more particularly, to a kind of test device.

Background technique

Dental pulp disease and periapical disease are the common diseases of the department of stomatology, save patient teeth, dental pulp is modern dentistry Therapeutic purposes, and root canal treatment is current most common and most effective treatment method；When carrying out root canal treatment, need to root of the tooth Interior root canal carries out cutting expansion, removes infection；Expanding tool the most universal used in root canal is exactly machine NiTi system.

Machine NiTi system mainly includes motor-driven motor and needle is frustrated in NiTi expansion, and motor-driven motor driving NiTi expansion frustrates needle in root canal Root canal wall is cut in interior rotation, thus play the role of expanding root canal, but clinically, NiTi expansion is frustrated needle and is easy since rotation is tired The factors such as labor and root canal curvature fracture in root canal, lead to treatment failure, therefore, cause NiTi to expand to further appreciate that The factor and improvement machine NiTi system for frustrating needle fracture are needed to frustrate needle for NiTi expansion and be tested.

Test device in the prior art is to offer a test trough, and needle is frustrated in the driving NiTi expansion of machine motor and is being surveyed Rotation in experimental tank, to check that the reason of needle fractures is frustrated in NiTi expansion during the test.

But test device in the prior art, it has following defects that

(1) a kind of test device is suitable only for a certain specific motor-driven NiTi system, cannot achieve general, causes respectively to grind Study carefully between result without comparativity, lacks unified measurement standard.

(2) the simulation root canal size in test trough is single, and most measuring devices only account for diameter of root canal and curvature, not Consider that root canal morphology frustrates whether the size between needle matches with measured NiTi expansion.

(3) it is not used to fatigue resistance of the measurement Nickel titanium mechanical instruments in vitro people's dental cast.

Utility model content

The purpose of this utility model is to provide a kind of test device, with alleviate test device existing in the prior art without Method is realized general between not homologous ray, causes to lack unified measurement standard without comparativity between each result of study；Mould in test trough Quasi- root canal size is single, and is not used to the technology of fatigue resistance of the measurement Nickel titanium mechanical instruments in vitro people's dental cast At least one of problem.

The embodiments of the present invention are achieved in that

A kind of test device provided by the utility model, for testing oral cavity root canal rotary NiTi-instruments anti-fatigue performance, It include: pedestal, mobile station, root canal simulated block and fixed bracket；

The mobile station is connect with the pedestal, and the mobile station can be mobile relative to the X-direction of the pedestal；

The root canal simulated block is connect with the mobile station, and the root canal simulated block can be relative to the mobile station Y direction is mobile；

The fixed bracket is connect with the pedestal, and the motor for installing motor-driven motor is provided on the fixed bracket Fixing seat, the motor fixing base can be mobile relative to the support bracket fastened Z-direction, and the motor fixing base can It is rotated relative to the support bracket fastened circumferencial direction；

It is provided with NiTi filing expanding needle on the motor-driven motor, so that the motor-driven motor drives the NiTi filing expanding needle in more A angle and multiple positions enter in the root canal simulated block.

In the utility model preferred embodiment, test device provided by the utility model further includes fixing piece；

Movable passageway is provided on the pedestal, the movable passageway is extended along the Y direction of the pedestal, institute Stating support bracket fastened one end can connect across the movable passageway with the fixing piece, so that the fixed bracket can be opposite It is fixed in the movable passageway.

In the utility model preferred embodiment, the movable passageway is provided with a plurality of, a plurality of movable passageway edge The pedestal X-direction arrangement.

In the utility model preferred embodiment, multiple movable passageways are along between X-direction of the pedestal etc. Away from setting, and the spacing range of any two movable passageways are as follows: 4-6mm.

In the utility model preferred embodiment, test trough is provided on the root canal simulated block, the test trough is equal Including straightway and segmental arc, and the straightway is close to the edge of the root canal simulated block, so that the motor-driven motor drives The NiTi filing expanding needle sequentially enters straightway and segmental arc.

In the utility model preferred embodiment, the test trough is provided with multiple, the arc of each test trough The bending angle of section is different.

In the utility model preferred embodiment, the test trough setting is tapered；

The range of taper of the test trough are as follows: 0.02-0.06, and the test trough minimum at diameter diameter range Are as follows: 0.1-0.25mm.

In the utility model preferred embodiment, the bending angle range of the segmental arc of the test trough are as follows: 30 °- 90°。

In the utility model preferred embodiment, the mobile station includes the mobile foundation being fixedly connected and fixed plate；

The mobile foundation is vertical setting with the fixed plate, and the L-shaped structure of the pedestal, the mobile foundation It is abutted with the side of the pedestal of " L " type, and the side of the pedestal is provided with the first sliding channel, on the mobile foundation It is provided with the first fixed part, first fixed part can pass through first sliding channel, so that the mobile foundation is opposite It is slided in first sliding channel, and first fixed part can be fixedly connected with the mobile foundation, so that the shifting Moving base is fixed relative to the pedestal.

In the utility model preferred embodiment, the second sliding channel, the fixation are set on the root canal simulated block The second fixed part is provided on plate, second fixed part can pass through second sliding channel, so that the root canal is simulated Block is slided relative to second sliding channel, and second fixed part can be fixedly connected with the fixed plate, so that institute Root canal simulated block is stated to fix relative to the fixed plate.

The beneficial effect of the utility model embodiment is:

A kind of test device provided by the utility model, for testing oral cavity root canal rotary NiTi-instruments anti-fatigue performance, It include: pedestal, mobile station, root canal simulated block and fixed bracket；It can be moved respectively relative to the X-direction of pedestal by mobile station It is dynamic；Root canal simulated block can be mobile relative to the Y direction of mobile station；It is provided on fixed bracket for installing motor-driven motor Motor fixing base, motor fixing base can be mobile relative to support bracket fastened Z-direction, and motor fixing base can be relative to solid The circumferencial direction of fixed rack rotates；Finally by NiTi filing expanding needle is provided on motor-driven motor, so that motor-driven motor drives NiTi Filing expanding needle enters in root canal simulated block in multiple angles and multiple positions；By the adjustable direction of motor fixing base, and Multiple groups mounting base is provided on motor fixing base, so as to be suitable for various motor-driven motor systems, by root canal simulated block and shifting Platform is moved as fixture, in vitro people's tooth is fixed therebetween as measurement environment, alleviates test device existing in the prior art It cannot achieve general, cause to lack unified measurement standard, and be not used to measure motor-driven nickel without comparativity between each result of study The technical issues of fatigue resistance of the titanium instrument in vitro people's dental cast, realizes and reduces the difference that card embraces effect, more adjunction Nearly clinical use environment.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the overall structure diagram of test device provided by the embodiment of the utility model；

Fig. 2 is the configuration schematic diagram of test device provided by the embodiment of the utility model；

Fig. 3 is the structural schematic diagram of the root canal simulated block of test device provided by the embodiment of the utility model.

Icon: 100- pedestal；101- movable passageway；The first sliding channel of 102-；200- mobile station；201- mobile foundation； 202- fixed plate；300- root canal simulated block；301- test trough；311- straightway；321- segmental arc；The second sliding channel of 302-； 400- fixes bracket；500- motor fixing base；600- fixing piece；The first fixed part of 700-；The second fixed part of 800-.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or The utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and letter Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " etc. are only used for area Divide description, is not understood to indicate or imply relative importance.

In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical" It has to fully horizontally, but can be slightly tilted.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition Solve the concrete meaning of above-mentioned term in the present invention.

With reference to the accompanying drawing, it elaborates to some embodiments of the utility model.In the absence of conflict, under The feature in embodiment and embodiment stated can be combined with each other.

Wherein, the simulation root canal size in the prior art in test trough is single, and it is straight that most measuring devices only account for root canal Diameter and curvature do not consider that root canal morphology frustrates whether the size between needle matches with measured NiTi expansion；Specific explanations are example If the diameter of the test trough of root canal simulated block is 0.5mm, need when experiment to measure and compare diameter be respectively 0.3mm, 0.4mm, The anti-fatigue performance of three kinds of NiTi filing expanding needles of 0.5mm, but the NiTi filing expanding needle of 0.3mm, 0.4mm, 0.5mm diameter is in 0.5mm The effect of embracing of the card that is subject to must be different in simulation root canal, therefore it is inconsistent to will cause experimental result measurement environment, and cannot be true Real reaction clinical practice situation.

As shown in Figure 1-3, a kind of test device provided in this embodiment, anti-for testing oral cavity root canal rotary NiTi-instruments Fatigue behaviour, comprising: pedestal 100, mobile station 200, root canal simulated block 300 and fixed bracket 400；Mobile station 200 and pedestal 100 Connection, and mobile station 200 can be mobile relative to the X-direction of pedestal 100；Root canal simulated block 300 is connect with mobile station 200, And root canal simulated block 300 can be mobile relative to the Y direction of mobile station 200；Fixed bracket 400 is connect with pedestal 100, fixed The motor fixing base 500 for installing motor-driven motor is provided on bracket 400, motor fixing base 500 can be relative to fixed branch The Z-direction of frame 400 is mobile, and motor fixing base 500 can be relative to the circumferencial direction rotation of fixed bracket 400；Motor-driven horse Up to NiTi filing expanding needle is above provided with, so that motor-driven motor drives NiTi filing expanding needle to enter to root canal in multiple angles and multiple positions In simulated block 300.

As shown in Figure 1, being directed to the setting in three directions of rectangular coordinate system in space, wherein mobile station 200 is relative to pedestal Moving direction of 100 moving direction with root canal simulated block 300 relative to mobile station 200 is vertical setting, and due to root canal Simulated block 300 and mobile station 200 are connection relationships, so that root canal simulated block 300 can be with movement when mobile station 200 is mobile Platform 200 is moved, and any movement of root canal simulated block 300 in the plane is realized.

In addition, the test subject due to root canal simulated block 300 as simulation cynodontin's pipe, needs to have NiTi expansion at this time The motor-driven motor of file needle is set to the side of root canal simulated block 300, and since root canal simulated block 300 has certain height, It is mobile relative to fixed bracket 400 so as to control the motor fixing base 500 for placing motor-driven motor, and it is moved to corresponding position It postpones, motor fixing base 500 is fixed with fixed bracket 400, and can be relative to fixed branch by motor fixing base 500 Frame 400 rotates, and thus the NiTi filing expanding needle on adjustable motor-driven motor enters root canal simulator at different angles In test trough 301, so as to more be bonded in clinical manipulation, enter in patient teeth in varied situations.

Optionally, it is provided with multiple groups mounting base on motor fixing base 500, so as to place on motor fixing base 500 There is the motor-driven motor of different size, meets the installation requirements of different NiTi filing expanding needles, and can set mounting base to can Adjustment structure is replaced motor-driven motor and is mounted in adjustable mounting base, then adjust again when needing to be compared other products Whole corresponding position.

In the present embodiment, test trough 301 is provided on root canal simulated block 300, and there are many settings of root canal simulated block 300 Specification, each root canal simulated block 300 be it is ready-made in factory, for the NiTi filing expanding needle of existing different size, system Determined the root canal simulated block 300 of dimension, moreover, if using other specifications NiTi filing expanding needle, can also increase accordingly The specification type for adding root canal simulated block 300 is detachably connected since root canal simulated block 300 is used with mobile station 200, ensure that not The root canal simulated block 300 of same type and the movement and fixation of mobile station 200.

The beneficial effect of the utility model embodiment is:

A kind of test device provided in this embodiment is wrapped for testing oral cavity root canal rotary NiTi-instruments anti-fatigue performance It includes: pedestal 100, mobile station 200, root canal simulated block 300 and fixed bracket 400；It respectively can be the bottom of relative to by mobile station 200 The X-direction of seat 100 is mobile；Root canal simulated block 300 can be mobile relative to the Y direction of mobile station 200；Fixed bracket 400 On be provided with motor fixing base 500 for installing motor-driven motor, motor fixing base 500 can be relative to the Z of fixed bracket 400 Axis direction is mobile, and motor fixing base 500 can be relative to the circumferencial direction rotation of fixed bracket 400；Finally by motor-driven horse Up to NiTi filing expanding needle is above provided with, so that motor-driven motor drives NiTi filing expanding needle to enter to root canal in multiple angles and multiple positions In simulated block 300；By the adjustable direction of motor fixing base 500, and multiple groups installation is provided on motor fixing base 500 Seat regard root canal simulated block 300 and mobile station 200 as fixture so as to be suitable for various motor-driven motor systems, the two it Between fix in vitro people's tooth as measurement environment, alleviating test device existing in the prior art cannot achieve general, cause respectively to grind Study carefully between result without comparativity, lack unified measurement standard, and is not used to measurement Nickel titanium mechanical instruments in vitro people's dental cast The technical issues of interior fatigue resistance, realizes and reduces the difference that card embraces effect, is more nearly clinical use environment.

As shown in Figure 1, on the basis of the above embodiments, further, in the utility model preferred embodiment, moving Dynamic platform 200 includes the mobile foundation 201 being fixedly connected and fixed plate 202；Mobile foundation 201 is vertical setting with fixed plate 202, And the L-shaped structure of pedestal 100, mobile foundation 201 is abutted with the side of the pedestal 100 of " L " type, and the side of pedestal 100 is set It is equipped with the first sliding channel 102, is provided with the first fixed part 700 on mobile foundation 201, the first fixed part 700 can pass through the One sliding channel 102, so that mobile foundation 201 is slided relative to the first sliding channel 102, and the first fixed part 700 can be with Mobile foundation 201 is fixedly connected, so that mobile foundation 201 is fixed relative to pedestal 100.

Wherein, the connection type of mobile foundation 201 and fixed plate 202 can be a variety of, such as: integrated formed structure, weldering It connects, be bonded, it is preferable that mobile foundation 201 and the connection type of fixed plate 202 are integrally formed.

Specifically, integral structure of the pedestal 100 as a L " type, the side of pedestal 100 be provided with one it is perforative First sliding channel 102, and the height of mobile foundation 201 is consistent with the height of the side of pedestal 100, mobile foundation 201 When abutting with pedestal 100, fixation hole is provided on mobile foundation 201, the first fixed part 700 can pass through the first sliding channel It 102 and is connect with fixation hole, it, at this time can be by 700 conduct of the first fixed part when the first fixed part 700 is unclamped with fixation hole Sliding bar is moved relative to the first sliding channel 102, after reaching specific location, by the first fixed part 700 and can be consolidated at this time Determine hole to be fixedly connected, so as to complete movement and fixation of the mobile foundation 201 relative to pedestal 100.

Wherein, the first fixed part 700 can be a variety of, such as: screw rod, bolt or the fixed link with elastic bumps Deng, it is preferable that the first fixed part 700 is bolt；Fixation hole uses threaded hole, when needing to be moved mobile foundation 201, Bolt and threaded hole are unscrewed, can be slided at this time, when needing fixed, bolt and threaded hole are tightened, at this time the end of bolt Portion abuts completely with the edge of pedestal 100, so as to which mobile foundation 201 to be fixedly connected with pedestal 100.

In the utility model preferred embodiment, the second sliding channel 302, fixed plate are set on root canal simulated block 300 The second fixed part 800 is provided on 202, the second fixed part 800 can pass through the second sliding channel 302, so that root canal simulated block 300 slide relative to the second sliding channel 302, and the second fixed part 800 can be fixedly connected with fixed plate 202, so that root canal Simulated block 300 is fixed relative to fixed plate 202.

Likewise, the second fixed part 800 can be a variety of, and such as: screw rod, bolt or the fixed link with elastic bumps Deng, it is preferable that the second fixed part 800 is bolt；Fixation hole in fixed plate 202 uses threaded hole.

In the utility model preferred embodiment, test device provided in this embodiment further includes fixing piece 600；Pedestal Movable passageway 101 is provided on 100, movable passageway 101 is extended along the Y direction of pedestal 100, fixed bracket 400 One end can pass through movable passageway 101 and connect with fixing piece 600, so that fixed bracket 400 can be solid relative to movable passageway 101 It is fixed.

Wherein, one end that fixed bracket 400 passes through movable passageway 101 has thread segment, it is preferable that fixing piece 600 uses Nut, after fixed bracket 400 is moved to determining position relative to movable passageway 101, by the screw thread of nut and fixed bracket 400 Section is connect with nut, so as to fix the locking of bracket 400 position that movable passageway 101 determines at this moment.

In addition, fixing piece 600 can also use other structures, and such as: fixing piece 600 is bolt, and fixed bracket 400 passes through One end of movable passageway 101 has jack, when needing fixed, bolt is inserted directly into jack, it is preferable that bolt Using straight pin.Alternatively, fixing piece 600 can also be using elastic lock etc..

In the utility model preferred embodiment, movable passageway 101 be provided with it is a plurality of, a plurality of movable passageway 101 along The X-direction of pedestal 100 is arranged.

Since mobile foundation 201 is mobile in X-direction relative to pedestal 100, so that it is provided with a plurality of movable passageway 101, A plurality of movable passageway 101 arranges that the motor-driven motor met on fixed bracket 400 can be in not along the X-direction of pedestal 100 Same direction and angle drives NiTi filing expanding needle to enter in root canal simulated block 300.

In the utility model preferred embodiment, multiple movable passageways 101 are equidistant along the X-direction of pedestal 100 Setting, and the spacing range of any two movable passageways 101 are as follows: 4-6mm；It is possible to further in each movable passageway 101 On be respectively arranged with a fixed bracket 400 and improve efficiency so as to start simultaneously at the measurement of multiple test troughs.

Preferably, the spacing of any two movable passageways 101 is 5mm.

In the utility model preferred embodiment, test trough 301 is provided on root canal simulated block 300, test trough 301 is equal Including straightway 311 and segmental arc 321, and straightway 311 is close to the edge of root canal simulated block 300, so that motor-driven motor drives NiTi filing expanding needle sequentially enters straightway 311 and segmental arc 321.

Due to during the test, needing the blade by NiTi filing expanding needle to be placed in test trough 301, and NiTi filing expanding needle It is also that can just fracture in clinic in bending, so that the blade of NiTi filing expanding needle can sequentially enter 311 He of straightway Segmental arc 321 until NiTi filing expanding needle is fractureed, and records NiTi filing expanding needle then under the driving effect of motor-driven motor It fractures the required time, to detect the antifatigue time of NiTi filing expanding needle.

In the utility model preferred embodiment, test trough 301 is provided with multiple, the segmental arc of each test trough 301 321 bending angle is different.

As shown in figure 3, the angle α > angle β > angle γ of three test troughs.

Wherein it is preferred to mode can be that the angle of angle α is 90 °, and angle β is 60 °, and the angle of angle γ is 30°.In addition, the specific degree of angle α, angle β, angle γ can be various ways, it is only necessary to guarantee above-mentioned size mode ?.

Further, the bending angle range of the segmental arc 321 of test trough 301 are as follows: 30 ° -90 °, different by setting Bending angle, so as to simulate under each different operating conditions, the antifatigue time of NiTi filing expanding needle.

As shown in figure 3, test trough 301 is arranged tapered in the utility model preferred embodiment；Test trough 301 Range of taper are as follows: 0.02-0.06, and test trough 301 minimum at diameter diameter range are as follows: 0.1-0.25mm.

Preferably, the diameter of diameter can be at the minimum of test trough are as follows: 0.1mm, 0.15mm, 0.20mm, 0.25mm.

Since NiTi filing expanding needle has taper, and more toward the position of needle point, NiTi filing expanding needle is thinner, so cannot be complete It is stuck in the identical test trough 301 of overall length diameter, so that being not allowed when the identical test trough 301 of overall length diameter is for testing fatigue Really, and in clinic, for tooth when using instrument, tooth is also to have taper, it is possible to block NiTi completely and expand file Needle, in order to test the accuracy of structure, test trough 301 provided in this embodiment be arranged it is tapered, when the complete angle of test trough 301 When spending bigger, at this time by the bigger of taper production, and the test trough of different tapers is provided on same root pipe simulated block 300 301, by being provided with test trough 301 with taper, test trough 301 can be made to encircle with NiTi filing expanding needle even closer, More approach clinic use environment, so that test structure is more accurate.

Test device provided in this embodiment is realized for testing oral cavity root canal rotary NiTi-instruments anti-fatigue performance The test device that test device can provide different motor-driven motor and NiTi filing expanding needle through this embodiment is surveyed The versatility of examination so that each result can between be compared, unified measurement standard, and same root pipe die is quasi- It is provided with the test trough 301 of different tapers on block 300, by being provided with test trough 301 with taper, test trough can be made 301 encircle even closer, more approach clinic use environment with NiTi filing expanding needle, so that test structure is more accurate, so that It is more reasonable to design, more practical.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of test device, for testing oral cavity root canal rotary NiTi-instruments anti-fatigue performance characterized by comprising bottom Seat, mobile station, root canal simulated block and fixed bracket；

The mobile station is connect with the pedestal, and the mobile station can be mobile relative to the X-direction of the pedestal；

The root canal simulated block is connect with the mobile station, and the root canal simulated block can be relative to the Y-axis of the mobile station Direction is mobile；

The fixed bracket is connect with the pedestal, and the motor being provided on the fixed bracket for installing motor-driven motor is fixed Seat, the motor fixing base can be mobile relative to the support bracket fastened Z-direction, and the motor fixing base can be opposite It is rotated in the support bracket fastened circumferencial direction；

It is provided with NiTi filing expanding needle on the motor-driven motor, so that it is in multiple angles that the motor-driven motor, which drives the NiTi filing expanding needle, Degree and multiple positions enter in the root canal simulated block.

2. test device according to claim 1, which is characterized in that further include fixing piece；

Movable passageway is provided on the pedestal, the movable passageway is extended along the Y direction of the pedestal, described solid One end of fixed rack can pass through the movable passageway and connect with the fixing piece, so that the fixed bracket can be relative to institute Movable passageway is stated to fix.

3. test device according to claim 2, which is characterized in that the movable passageway be provided with it is a plurality of, it is a plurality of described Movable passageway is arranged along the X-direction of the pedestal.

4. test device according to claim 3, which is characterized in that multiple movable passageways along the pedestal X Axis direction spaced set, and the spacing range of any two movable passageways are as follows: 4-6mm.

5. test device according to claim 1, which is characterized in that be provided with test trough on the root canal simulated block, institute Stating test trough includes straightway and segmental arc, and the straightway is close to the edge of the root canal simulated block, so that the machine Dynamic motor drives the NiTi filing expanding needle to sequentially enter straightway and segmental arc.

6. test device according to claim 5, which is characterized in that the test trough is provided with multiple, each survey The bending angle of the segmental arc of experimental tank is different.

7. test device according to claim 6, which is characterized in that the test trough setting is tapered；

The range of taper of the test trough are as follows: 0.02-0.06, and the test trough minimum at diameter diameter range are as follows: 0.1-0.25mm。

8. test device according to claim 6, which is characterized in that the bending angle range of the segmental arc of the test trough Are as follows: 30 ° -90 °.

9. test device according to claim 1-8, which is characterized in that the mobile station includes being fixedly connected Mobile foundation and fixed plate；

The mobile foundation is vertical setting with the fixed plate, and the L-shaped structure of the pedestal, the mobile foundation with The side of the pedestal of " L " type abuts, and the side of the pedestal is provided with the first sliding channel, sets on the mobile foundation Be equipped with the first fixed part, first fixed part can pass through first sliding channel so that the mobile foundation relative to The first sliding channel sliding, and first fixed part can be fixedly connected with the mobile foundation, so that the movement Pedestal is fixed relative to the pedestal.

10. test device according to claim 9, which is characterized in that it is logical that the second sliding is arranged on the root canal simulated block Road is provided with the second fixed part in the fixed plate, and second fixed part can pass through second sliding channel, so that institute It states root canal simulated block to slide relative to second sliding channel, and second fixed part can be with the fixed company of the fixed plate It connects, so that the root canal simulated block is fixed relative to the fixed plate.