CN209264257U - A kind of intravascular stent torsional fatigue test device - Google Patents
A kind of intravascular stent torsional fatigue test device Download PDFInfo
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- CN209264257U CN209264257U CN201821976034.4U CN201821976034U CN209264257U CN 209264257 U CN209264257 U CN 209264257U CN 201821976034 U CN201821976034 U CN 201821976034U CN 209264257 U CN209264257 U CN 209264257U
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- intravascular stent
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Abstract
A kind of intravascular stent torsional fatigue test device, including a test chassis, the side of test chassis is provided with driving motor, test cell is provided in test chassis, both driving motor and test cell are connect by synchronous pulley, test cell includes driving section, torsional part and intravascular stent fixed part, driving section is horizontally installed in test chassis and is connect by long axis with synchronous pulley, intravascular stent fixed part is fixed with more intravascular stents side by side, and intravascular stent is connect with wherein one end that intravascular stent fixed part is fixed with the torsional part, driving motor drives long axis rotation to drive driving section to rotate by synchronous pulley, driving section drives torsional part to reverse one end of intravascular stent, to carry out the testing torsional fatigue of intravascular stent.The utility model additional torsional fatigue test test on the basis of existing intravascular stent only carries out the testing fatigue under uniform load, more preferably can widely assess the estimated performance of intravascular stent, and structure is simple, easily operated.
Description
Technical field
The utility model relates to fatigue test machinery technical fields, and in particular to a kind of intravascular stent torsional fatigue test dress
It sets.
Background technique
Cardiovascular and cerebrovascular disease is the general designation of cardiovascular and cranial vascular disease, is referred to since hyperlipidemia, blood are sticky, dynamic
The ischemic or hemorrhagic disease that heart caused by pulse atherosclerosis, hypertension etc., brain and body tissue occur, the whole world
The number for dying of cardiovascular and cerebrovascular disease every year is up to 15,000,000 people, occupies various causes of the death first places, therefore study the meaning of intravascular stent
It has some idea of.
Intravascular stent refers to that on the basis of the forming of lumen balloon expandable, it is narrow to reach support to be placed in inner support in lesion
Narrow occlusion section blood vessel, reduces blood vessel elasticity retraction and moulding again, the purpose for keeping lumen blood flow unobstructed, and part inner support also has
The effect of pre- anti-restenosis.Intravascular stent is broadly divided into coronary artery bracket, cerebrovascular stent, periphery bracket etc..
Three classes Permanent implantation object of the intravascular stent as high risk needs to consider it in body according to the technical specification of product
Interior 10 years use fatigue problems.Tube stent is not placed in different human bodies, will receive different load, therefore fatigue is former
Because also different.Intravascular stent product Fatigue Assessment outside listing precursor is mainly that the radial direction under considering by uniform load is tired at present
Labor.But bracket not only will receive the radial load of vascular wall after being implanted into human body, while also suffer from from peripheral organs, bone
The non-homogeneous cyclic loading compressing such as bone and joint motions, blood vessel can generate torsion and bending.In order to preferably assess design bracket
In the service life to implant, the harsh conditions for needing the abundant expected implant site of research intravascular stent that may meet with, and
The external bending and torsion test for carrying out bracket, the expected service life after being implanted into extend as far as possible.
Therefore, it is necessary to design a kind of intravascular stent bending fatigue testing device of brand new to want to meet existing test
It asks.
Summary of the invention
In view of this, the purpose of the utility model is to provide a kind of intravascular stent torsional fatigue test devices, existing
Intravascular stent only carries out additional torsional fatigue test test on the basis of the testing fatigue under uniform load, can more preferably widely
Assess the estimated performance of intravascular stent.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
A kind of intravascular stent torsional fatigue test device, including a test chassis, the side of the test chassis are provided with
Driving motor, is provided with test cell in the test chassis, and both driving motor and test cell are connect by synchronous pulley,
The test cell includes driving section, torsional part and intravascular stent fixed part, and the driving section is horizontally installed on test chassis
It above and by long axis is connect with synchronous pulley, the intravascular stent fixed part is fixed with more intravascular stents, and blood vessel branch side by side
Frame wherein one end fixed with intravascular stent fixed part is connect with the torsional part, and driving motor drives long axis by synchronous pulley
Rotation is to drive driving section to rotate, and driving section drives torsional part to reverse one end of intravascular stent, to carry out intravascular stent
Testing torsional fatigue.
Preferably, the test chassis includes a pair of of cant board, from top to bottom successively set between the cant board
It is equipped with long axis, upper workbench and lower workbench, the lower workbench is detachably connected with cant board, and the long axis runs through
It is arranged by cant board and is connect between cant board by first bearing, one end of the long axis and the synchronous pulley connects
It connects.
Preferably, a guide rod that can be rotated together with long axis is connected at the other end of the long axis, it is described edge-on
Plate rotates covered any position in guide rod and is equipped with a photoelectric probe, and the guide rod and photoelectric probe constitute counting unit.
Preferably, the driving section includes multiple first bevel type gears, and multiple first bevel type gears are in long axis
It is uniformly arranged on part between cant board, and long axis is followed to rotate together.
Preferably, the torsional part includes multiple second bevel gears, multi-diameter shaft and second bearing, described second
Bevel gear is vertically arranged relative to the first bevel gear, and is engaged with the first bevel gear, second bevel gear
With ladder axis connection, the multi-diameter shaft wears through the upper workbench, and passes through second bearing between upper workbench
It is fixedly connected.
Preferably, the intravascular stent fixed part includes intravascular stent upper die holder and intravascular stent lower die holder, it is described
Intravascular stent upper die holder is fixedly connected with multi-diameter shaft, and multi-diameter shaft is followed to rotate together, the intravascular stent lower die holder and lower work
It is fixed as platform, is arranged between the intravascular stent upper die holder and intravascular stent lower die holder and is fixed with intravascular stent to be measured.
Compared with prior art, a kind of intravascular stent torsional fatigue test device provided by the utility model, this test dress
Additional torsional fatigue test test on the basis of existing intravascular stent only carries out the testing fatigue under uniform load is set, it can be more preferable
The widely estimated performance of assessment intravascular stent.This experimental rig uses modular construction, convenient for adjusting bending curvature radius,
Dismounting flexibly, can require quick-replaceable tooling according to different, realize the more test-purposes of a machine, save cost.Driving motor and biography
Dynamic portion, torsional part cooperate, and it is tired to meet intravascular stent torsion that lateral transfer motion power is converted to longitudinal torsion power
The requirement of labor test.Meanwhile driving motor can frequently during Adjustment Tests torsion parameter, load smaller.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of intravascular stent torsional fatigue test device provided by the utility model；
Fig. 2 is a kind of structural representation of the counting unit of intravascular stent torsional fatigue test device provided by the utility model
Figure.
Appended drawing reference involved in attached drawing and component part explanation:
1, cant board；2, long axis；3, upper workbench；4, lower workbench；5, first bearing；6, synchronous pulley；7, it drives
Dynamic motor；8, intravascular stent；9, the first bevel gear；10, the second bevel gear；11, multi-diameter shaft；12, second bearing；13, blood
Pipe holder upper die holder；14, intravascular stent lower die holder；15, guide rod；16, photoelectric probe.
Specific embodiment
Preceding intravascular stent product Fatigue Assessment outside listing precursor is mainly the radial fatigue under considering by uniform load.
But bracket not only will receive the radial load of vascular wall after being implanted into human body, while also suffer from from peripheral organs, bone
And the non-homogeneous cyclic loading compressing such as joint motions, blood vessel can generate torsion and bending.Exist to preferably assess design bracket
The service life to implant needs sufficiently to study the harsh conditions that the expected implant site of intravascular stent may be met with, and in body
The outer bending and torsion test for carrying out bracket, the expected service life after being implanted into extend as far as possible.
Therefore, the utility model provide a kind of brand new intravascular stent torsional fatigue test device it is existing to meet
Test request.
The technical solution of the utility model will be clearly and completely described by specific embodiment below.Obviously,
The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, fall within the protection scope of the utility model.
Referring to shown in FIG. 1 to FIG. 2, a kind of intravascular stent torsional fatigue test device, including a test chassis.Test chassis
It include a pair of symmetrically arranged cant board 1, two pieces of cant boards 1 are with respect to the horizontal plane placed.By upper between two pieces of cant boards 1
Long axis 2, upper workbench 3 and lower workbench 4 are disposed under.Lower workbench 4 is detachably connected with cant board 1,
To meet the length requirement of different intravascular stents to be measured.
Wherein, long axis 2 extends through the setting of cant board 1 and is connect between cant board 1 by first bearing 5.Long axis 2
One end is connect by synchronous pulley 6 with the driving motor 7 that 1 avris of cant board is arranged in.
Still the test cell of test intravascular stent torsional fatigue degree is provided between two pieces of cant boards 1.Specifically, test
Unit includes driving section, torsional part and intravascular stent fixed part.Intravascular stent 8 to be measured is fixed on intravascular stent fixed part,
Driving section connect with driving motor 7 and is used for transmission power, and torsional part is connected to driving section and intravascular stent fixed part, is that will pass
The power in dynamic portion is converted to twisting resistance for reversing the intravascular stent 8 on intravascular stent fixed part.
Long axis 2 is worn through two pieces of cant boards 1, and long axis 2 is equipped with transmission on the part between two pieces of cant boards 1
Portion, i.e. driving motor 7 drive long axis 2 to rotate by synchronous pulley 6, and the rotation of long axis 2 drives driving section to rotate together.Wherein, blood
More intravascular stents 8 to be measured, and intravascular stent 8 and the fixation of intravascular stent fixed part are fixed on pipe holder fixed part side by side
Wherein one end is connect with torsional part, and driving motor 7 drives the rotation of long axis 2 to drive driving section to rotate by synchronous pulley 6,
Driving section drives torsional part to reverse one end of intravascular stent 8, to carry out the testing torsional fatigue of intravascular stent 8.
The set-up mode and fit system of above-mentioned driving section and torsional part are as follows, and driving section includes multiple first umbellate forms
Gear 9, and multiple first bevel type gears 9 are uniformly arranged on part between cant board 1 in long axis 2, and follow long axis 2 one
With rotation.Torsional part includes multiple second bevel gears 10, multi-diameter shaft 11 and second bearing 12, and the second bevel gear 10 is opposite
It is vertically arranged in the first bevel gear 9, and is engaged with the first bevel gear 9.Second bevel gear 10 connects with multi-diameter shaft 11
It connects, multi-diameter shaft 11 is worn through upper workbench 3, and is fixedly connected between upper workbench 3 by second bearing 12.Transmission
First bevel gear 9 in portion and the second bevel gear 10 of torsional part cooperate, thus by the lateral rotation in 2 axial direction of long axis
It is converted into longitudinally rotating in 11 axial direction of multi-diameter shaft, to realize the purpose for reversing intravascular stent 8 to be measured.
Intravascular stent fixed part includes intravascular stent upper die holder 13 and intravascular stent lower die holder 14, intravascular stent upper die holder 13
It being fixedly connected with multi-diameter shaft 11, and multi-diameter shaft 11 is followed to rotate together, intravascular stent lower die holder 14 and lower workbench 4 are fixed,
It is arranged between intravascular stent upper die holder 13 and intravascular stent lower die holder 14 and is fixed with intravascular stent 8 to be measured.
Testing torsional fatigue process is as follows: firstly, the both ends of intravascular stent 8 to be measured are separately fixed at intravascular stent upper mold
On seat 13 and intravascular stent lower die holder 14.Thereafter driving motor 7 is opened, drives long axis 2 to rotate by synchronous pulley 6,2 turns of long axis
The first bevel gear 9 that dynamic drive is threaded through on long axis 2 follows to be rotated together.It is nibbled at the vertical lower of first bevel gear 9
Conjunction has the second bevel gear 10, and the transverse rotation of the first bevel gear 9 is then converted to the longitudinal of the second bevel gear 10 and is revolved
Turn.Second bevel gear 10 is connect with the multi-diameter shaft 11 being fixed on upper workbench 3, and the rotation of the second bevel gear 10 drives
Multi-diameter shaft 11 rotates, and has been further driven to rotate with the fixed intravascular stent upper die holder 13 of multi-diameter shaft 11, due under intravascular stent
Die holder 14 is fixedly connected with lower workbench 4, is reversed so as to realize intravascular stent 8 to be measured.
In order to count to number of torsions, this experimental rig has also added a counting unit.I.e. long axis 2 not with
A guide rod 15 that can be rotated together with long axis 2 is connected at the other end that synchronous pulley 6 connects, cant board 1 is rotated in guide rod 15
Any position covered is equipped with a photoelectric probe 16.It counts when guide rod 15 covers photoelectric probe 16 once, with long axis 2
Rotation, guide rod 15 photoelectricity come back 16 top at reciprocally swinging, so as to achieve the effect that counting.
A kind of intravascular stent torsional fatigue test device provided by the utility model, this experimental rig is in existing intravascular stent
Additional torsional fatigue test is tested on the basis of only carrying out the testing fatigue under uniform load, more preferably can widely assess blood vessel
The estimated performance of bracket, and structure is simple, it is easily operated.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a kind of intravascular stent torsional fatigue test device, it is characterised in that: including a test chassis, the one of the test chassis
Side is provided with driving motor, is provided with test cell in the test chassis, and both driving motor and test cell pass through synchronous
Belt wheel connection, the test cell includes driving section, torsional part and intravascular stent fixed part, and the driving section is horizontally installed on
It being connect in test chassis and by long axis with synchronous pulley, the intravascular stent fixed part is fixed with more intravascular stents side by side,
And intravascular stent is connect with wherein one end that intravascular stent fixed part is fixed with the torsional part, driving motor passes through synchronous pulley
Driving long axis rotation is to drive driving section to rotate, and driving section drives torsional part to reverse one end of intravascular stent, to carry out
The testing torsional fatigue of intravascular stent.
2. a kind of intravascular stent torsional fatigue test device according to claim 1, it is characterised in that: the test chassis
Include a pair of of cant board, long axis, upper workbench and lower workbench be from top to bottom disposed between the cant board,
The lower workbench is detachably connected with cant board, and the long axis extends through cant board setting and passes through between cant board
First bearing connection, one end of the long axis is connect with the synchronous pulley.
3. a kind of intravascular stent torsional fatigue test device according to claim 2, it is characterised in that: the long axis it is another
A guide rod that can be rotated together with long axis is connected at one end, the cant board rotates covered any position in guide rod and sets
There is a photoelectric probe, the guide rod and photoelectric probe constitute counting unit.
4. a kind of intravascular stent torsional fatigue test device according to claim 2, it is characterised in that: the driving section packet
Include multiple first bevel type gears, and multiple first bevel type gears are uniformly arranged on part between cant board in long axis,
And long axis is followed to rotate together.
5. a kind of intravascular stent torsional fatigue test device according to claim 4, it is characterised in that: the torsional part packet
Multiple second bevel gears, multi-diameter shaft and second bearing are included, second bevel gear is vertical relative to the first bevel gear
Setting, and be engaged with the first bevel gear, second bevel gear and ladder axis connection, the multi-diameter shaft, which is worn, to be passed through
The upper workbench, and be fixedly connected between upper workbench by second bearing.
6. a kind of intravascular stent torsional fatigue test device according to claim 5, it is characterised in that: the intravascular stent
Fixed part includes intravascular stent upper die holder and intravascular stent lower die holder, and the intravascular stent upper die holder is fixedly connected with multi-diameter shaft,
And follow multi-diameter shaft to rotate together, the intravascular stent lower die holder is fixed with lower workbench, the intravascular stent upper die holder and
It is arranged between intravascular stent lower die holder and is fixed with intravascular stent to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821976034.4U CN209264257U (en) | 2018-11-28 | 2018-11-28 | A kind of intravascular stent torsional fatigue test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821976034.4U CN209264257U (en) | 2018-11-28 | 2018-11-28 | A kind of intravascular stent torsional fatigue test device |
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| CN201821976034.4U Active CN209264257U (en) | 2018-11-28 | 2018-11-28 | A kind of intravascular stent torsional fatigue test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617955A (en) * | 2019-10-18 | 2019-12-27 | 江苏理工学院 | External testing device for fatigue performance of blood vessel support |
| CN112213213A (en) * | 2020-10-10 | 2021-01-12 | 官秋茹 | Medical catheter bending fatigue performance testing equipment |
| CN112255129A (en) * | 2020-10-22 | 2021-01-22 | 江苏理工学院 | External torsion loading device for intravascular stent |
| CN112485132A (en) * | 2020-11-19 | 2021-03-12 | 东莞市镁安医疗器械有限公司 | Vascular stent twists reverse testing arrangement |
-
2018
- 2018-11-28 CN CN201821976034.4U patent/CN209264257U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617955A (en) * | 2019-10-18 | 2019-12-27 | 江苏理工学院 | External testing device for fatigue performance of blood vessel support |
| CN110617955B (en) * | 2019-10-18 | 2021-08-24 | 江苏理工学院 | External testing device for fatigue performance of blood vessel support |
| CN112213213A (en) * | 2020-10-10 | 2021-01-12 | 官秋茹 | Medical catheter bending fatigue performance testing equipment |
| CN112255129A (en) * | 2020-10-22 | 2021-01-22 | 江苏理工学院 | External torsion loading device for intravascular stent |
| CN112485132A (en) * | 2020-11-19 | 2021-03-12 | 东莞市镁安医疗器械有限公司 | Vascular stent twists reverse testing arrangement |
| CN112485132B (en) * | 2020-11-19 | 2024-01-19 | 东莞市镁安医疗器械有限公司 | Vascular stent torsion testing device |
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