CN108955990A - A kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power - Google Patents
A kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power Download PDFInfo
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- CN108955990A CN108955990A CN201810787140.6A CN201810787140A CN108955990A CN 108955990 A CN108955990 A CN 108955990A CN 201810787140 A CN201810787140 A CN 201810787140A CN 108955990 A CN108955990 A CN 108955990A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/04—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges
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Abstract
The invention discloses a kind of experimental provisions of real-time monitoring simulated blood vessel medium vessels bracket radial support power, including adjustable speed peristaltic pump (1), reservoir (2), water bath (3), silica gel hose (5) between bracket average radial support force monitoring device (4) and connecting components, the bracket average radial support force monitoring device (4) includes intravascular stent (6), internal layer polymer transparent elastic pipe (7), resistance-strain wire type transducer (8), outer layer copolymer transparent elastic pipe (9), polymeric transparent rigid pipe (10), fixing sleeve (11), data collector (12) and computer (13)；The device can real-time monitoring intravascular stent in vitro in Flow Corrosion medium to the radial support power of simulated blood vessel.Experimental provision of the present invention can measure the average radial support force of unlike material, structural vessel bracket, of simple structure and low cost, easy to operate.
Description
Technical field
The present invention relates to a kind of experimental provisions of real-time monitoring simulated environment medium vessels bracket radial support power, belong to medical treatment
Instrument Mechanics Performance Testing field.
Background technique
The radial mechanical performance of intravascular stent is mainly reflected in intravascular stent to the resistance and intravascular stent of extraneous pressure
To the adaptability to changes of external force action, this characteristic determines that can intravascular stent closely be attached into vascular wall.Support force
Too small, intravascular stent lumen under blood vessel reaction force becomes smaller, and easily causes blood vessel embolism, and the medical treatment that can not play intravascular stent is made
With, while easily intravascular stent is shifted under blood flow effect；And support force is excessive, will cause local vessel wall damage (as perforation,
Tearing, rupture etc.), cause the excessive reparation of surrounding tissue to be reacted, causes endometrial hyperplasia etc..Therefore the average radial of intravascular stent
Enabling capabilities are the important performance indexes for evaluating intravascular stent design structure.
Intravascular stent will receive the influence of blood flow and blood vessel pulsation, while the various lifes of human body in human body during one's term of military service
Reason activity can also generate the effect of power to intravascular stent, cause the decaying of bracket radial mechanical performance, lose it to vascular wall
Supporting role, cause the restenosis of blood vessel.For balloon expandable stent, when what it bore reaches it from extraneous pressure
When critical value, intravascular stent can collapse or the permanent impairments such as buckling deformation, causes intravascular stent support force and rigidity
Decline, this is for that can bear maximum radial pressure as the degradable blood vessel bracket that the degradation of bracket constantly reduces is particularly acute；
Self-expanding type blood vessel dilator will not generally be occurred due to its high resiliency, good temperature memory effect and radial compliance
Under certain action conditions bending deformation can occur for permanent deformation, although can restore after stress release to original shape,
But its process can still damage patient.
In pharmaceuticals industry standard YY/T0663.2-2016, it is related to four about intravascular stent radial mechanical performance and determines
Justice: radial crush resistance energy, anti-parallel-plate extrusion performance, local extrusion performance and radial support power.Radial crush resistance can be
Balloon expandable stent resists the ability of permanent deformation under the action of by the radial load being uniformly distributed along the circumference；Anti- parallel-plate squeezes
Pressure performance is the ability that bracket resists permanent deformation when by load equally distributed along integral support length；Local Squeezing ground
It can be the ability that bracket resists permanent deformation when by local load (such as point load)；Radial support power is that Self-expanded stent exists
The power that the release stage generates vascular wall.
Since intravascular stent is many kinds of, the position for being applicable in lesion is not also identical, while national standard and professional standard are only
The principle for providing directiveness, without the requirement of specific experimental method and technical parameter, therefore about intravascular stent radial mechanical
The ununified standard of the test method and technical indicator of performance.The specific experiment method master of currently used radial mechanical performance
Will there are three types of: the test of anti-parallel-plate extrusion performance, the test of anti-V-groove extrusion performance, radial anti-extrusion performance test and radial anti-
Hydraulic test.The precision of the test of anti-parallel-plate extrusion performance and the test of anti-V-groove extrusion performance is higher, but support force mode with
The practical mode of action in vascular environment is not identical, so can only be the indirect reflection to bracket radial strength；It is radial anti-crowded
Pressure performance test simulates the practical radial force situation of bracket in the blood vessel, in the radial compression that acquisition blood vessel acts on bracket
While power, bracket can also be obtained simultaneously to the chronic outreach power of blood vessel；Radial anti-hydraulic test also can preferable simulation bracket
Stress morphology in the blood vessel, but precision is lower, and uncertain factor is more.
For the experimental study of intravascular stent radial mechanical performance key index, need a set of simple applicable and effective flat
Equal radial support force test method, can accurately monitor intravascular stent in real time and be simulated in blood flow in vitro to simulated blood vessel
Average radial support force device, the intravascular stent mechanical property of unlike material, structure can be investigated, to establish and improving blood
The detection of pipe holder radial mechanical performance, appraisement system provide the theoretical foundation of science.
Summary of the invention
Technical problem: object of the present invention is to design a kind of reality of real-time monitoring simulated environment medium vessels bracket radial support power
Experiment device, the device can the military service behavior of real simulation intravascular stent in the blood vessel, can monitor in real time bracket to simulation blood
The average radial support force of pipe, and the flow in flow field, experimental temperature and corrosive medium are controllable, are suitable for different materials, ruler
Very little and structure intravascular stent test specimen.
Technical solution: the present invention provides a kind of experiment of real-time monitoring simulated blood vessel medium vessels bracket radial support power dresses
It sets, which includes adjustable speed peristaltic pump, reservoir, water bath, bracket average radial support force monitoring device and each portion of connection
Silica gel hose between part, the silica gel hose run through the inside of adjustable speed peristaltic pump, and the connection of one end and reservoir,
Its other end is connect with bracket average radial support force monitoring device, reservoir and bracket average radial support force monitoring device it
Between linked together by another silica gel hose, constitute cyclic corrosion medium flow field environment；
The reservoir is arranged in water bath；
The bracket average radial support force monitoring device includes intravascular stent, internal layer polymer transparent elastic pipe, electricity
Resistance strain wire type transducer, outer layer copolymer transparent elastic pipe, polymeric transparent rigid pipe, fixing sleeve, data collector and meter
Calculation machine, the intravascular stent are mounted in the pipe of internal layer polymer transparent elastic pipe, the appearance of internal layer polymer transparent elastic pipe
Face is wound with resistance-strain wire type transducer, and outer layer copolymer transparent elastic pipe is fitted in resistance-strain wire type transducer coil
Outside, both and resistance-strain wire type transducer is wrapped in by internal layer polymer transparent elastic pipe and outer layer copolymer transparent elastic pipe
Between, the outer layer copolymer transparent elastic pipe is mounted in polymeric transparent rigid pipe by fixing sleeve, data collector
It is connected with resistance-strain wire type transducer, and is connect with computer.
Wherein:
The flow velocity and flow of corrosive medium in the adjustable speed peristaltic pump control experimental provision, reservoir replacement experiment dress
Interior corrosive medium is set, the water bath temperature is adjustable, for adjusting the temperature for adjusting corrosive medium in experimental provision.
The internal layer polymer transparent elastic pipe and outer layer copolymer transparent elastic pipe are simulated blood vessel wall, and interior layers of polymer
The pipe thickness of object transparent elastic pipe and outer layer copolymer transparent elastic pipe is for 0.1~0.5mm, and material is polyurethane
PU, terylene or expanded PTFE.
The wall thickness of the polymeric transparent rigid pipe be 1mm~5mm, material be PMMA, that is, polymethyl methacrylate,
PP, that is, polypropylene, PVC, that is, polyvinyl chloride, PC, that is, polycarbonate or ABS, that is, polyacrylonitrile.
The outer surface of the internal layer polymer transparent elastic pipe is wound with resistance-strain wire type transducer, refers to using resistance
Straining silk, uniformly circumferential winding, screw pitch are 0.03~0.5mm in the outer surface of internal layer polymer transparent elastic pipe, are allowed to coil
Shape is covered on the outer surface that internal layer polymer transparent elastic pipe is coated with intravascular stent region, measures intravascular stent domain of the existence
Average radial support force, pass through corresponding software real-time display intravascular stent and internal layer polymer transparent elastic pipe and outer layers of polymer
The average contact pressure data between simulated blood vessel wall that object transparent elastic pipe is constituted, obtain being averaged for intravascular stent region
Radial pressure value, and carry out data analysis.
The coil method of the resistance-strain wire type transducer be alloy wire or semiconductor silk material, it is a diameter of
0.015~0.05mm, and the sensitivity coefficient of the alloy wire is 2~6, semiconductor silk material sensitivity coefficient is 150 or more.
The alloy wire or semiconductor silk material is corronil, Aludirome, nichrome, platinum or platinum alloy
One of.
The bracket average radial support force monitoring device is used for simulated blood vessel medium vessels bracket during the experiment
Average radial support force or simulated blood vessel in the average radial compressing force of bracket is monitored, dynamometry range be 0.0006~
170MPa。
The bracket average radial support force monitoring device is suitable for the reality of the intravascular stent of different sizes, material and construction
When measure.
The internal layer polymer transparent elastic pipe, resistance-strain wire type transducer, outer layer copolymer transparent elastic pipe and
The face that contacts with each other between polymeric transparent rigid pipe is smooth, and fitting is without opposite sliding.
The intravascular stent along the circumferential direction contacts internal layer polymer transparent elastic pipe, and directly act on be coated on it is inside and outside
On resistance-strain wire type transducer in layer elastic tube, the radial force being applied on intravascular stent is divided evenly, and acts on biography
The force value of sensor coil is acquired by the change in resistance of sensor.
The utility model has the advantages that compared with prior art, beneficial effects of the present invention are as follows:
1) the actual average stress condition of experimental provision real simulation intravascular stent provided by the invention in the blood vessel.With it is normal
Anti- parallel-plate extrusion performance test experiments are different, and it is the radial load along bracket circumference uniform distribution that the present apparatus, which measures the data obtained,
Stress situation of the intravascular stent in human vas is more realistically reacted in effect, is pressed obtaining blood vessel the radial direction that bracket acts on
While contracting power, bracket can also be obtained simultaneously to the chronic outreach power of blood vessel.In addition to the human body of capillary and capillary lymph duct
Blood vessel, vascular wall are broadly divided into three-decker: inner membrance, middle film and outer membrane, respectively by endothelial cell, smooth muscle cell and connective
Organizational composition mainly provides mechanical support by layer of smooth muscle cells, therefore selects elastic material, such as polyurethane is as simulation blood
Tube wall, to reach the mechanical property to match with blood vessel, and the micro phase separation structure that polyurethane material has is very similar
Organism blood vessel: being macroscopically very smooth surface, and it is microcosmic on be a lipid bilayer fluid matrix layer, in
Between be embedded with all kinds of glycoprotein and glycolipid matter；The high molecular polymers materials such as other materials such as terylene, expanded PTFE (ePTFE)
The artificial blood vessel of material manufacture also has reached realistic scale.Meanwhile the flow fields environment that device generates can really simulate blood
Flowing, speed, flow and the temperature-controllable in flow field.
2) experimental provision provided by the invention can accurately monitor intravascular stent site of action to simulated blood vessel in real time
Average radial support force.Compared to the passive radial Mechanics Performance Testing of intravascular stent, which can obtain intravascular stent pair
The real-time average radial of simulated blood vessel military service process supports force data, and obtains the big microsatellite of average radial support force by software
Outer simulated experiment carries out time extension and the dynamic data that changes, can be with more intuitive more scientific evaluation intravascular stent in the blood vessels
Radial support power variation during military service.
3) experimental provision provided by the invention is simple, low in cost, applied widely, can be to different sizes, material and structure
The intravascular stent made carries out the real-time measurement of radial support power, while experimental temperature, and flow field flow, corrosive medium is adjustable,
With general applicability.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the experimental provision of real-time monitoring simulated blood vessel medium vessels bracket radial support power；
Fig. 2 is the schematic diagram of bracket average radial support force monitoring device；
Have in figure: adjustable speed peristaltic pump 1, reservoir 2, water bath 3, bracket average radial support force monitoring device 4, silica gel
Hose 5 including intravascular stent 6, internal layer polymer transparent elastic pipe 7, resistance-strain wire type transducer 8, outer layer copolymer are transparent
Elastic tube 9, polymeric transparent rigid pipe 10, fixing sleeve 11, data collector 12 and computer 13.
Specific embodiment
The present invention provides a kind of intravascular stent that can accurately monitor in real time and is simulated in blood flow environment in vitro to simulation
The device of the average radial support force of blood vessel, suitable for for Flow Corrosion medium, intravascular stent is average to simulated blood vessel wall
The real-time measurement of radial support power effect, the present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, a kind of experimental provision of real-time monitoring simulated blood vessel medium vessels bracket radial support power, including it is adjustable
Silica gel between fast peristaltic pump 1, reservoir 2, water bath 3, bracket average radial support force monitoring device 4 and connecting components is soft
Pipe 5, the silica gel hose 5 run through the inside of adjustable speed peristaltic pump 1, and the connection of one end and reservoir 2, the other end and
Bracket average radial support force monitoring device 4 connects, and passes through between reservoir 2 and bracket average radial support force monitoring device 4
Another silica gel hose 5 links together, and constitutes cyclic corrosion medium flow field environment；Reservoir 2 is arranged in water bath 3；
The adjustable speed peristaltic pump 1 controls the flow velocity and flow of corrosive medium in experimental provision, the replacement experiment of reservoir 2
Corrosive medium in device, 3 temperature of water bath is adjustable, for adjusting the temperature for adjusting corrosive medium in experimental provision
Degree；
As shown in Fig. 2, bracket average radial support force monitoring device 4 includes intravascular stent 6, internal layer polymer transparent elastic
Pipe 7, resistance-strain wire type transducer 8, outer layer copolymer transparent elastic pipe 9, polymeric transparent rigid pipe 10, fixing sleeve 11, number
According to collector 12 and computer 13, the intravascular stent 6 is mounted in the pipe of internal layer polymer transparent elastic pipe 7, interior layers of polymer
The outer surface of object transparent elastic pipe 7 is wound with resistance-strain wire type transducer 8, and outer layer copolymer transparent elastic pipe 9 is fitted in electricity
Outside resistance strain 8 coil of wire type transducer, and internal layer polymer transparent elastic pipe 7 and outer layer copolymer transparent elastic pipe 9 are by resistance
Strain wire type transducer 8 is wrapped in therebetween, and the outer layer copolymer transparent elastic pipe 9 is mounted on poly- by fixing sleeve 11
It closes in object transparent rigid pipe 10, data collector 12 is connected with resistance-strain wire type transducer 8, and connect with computer 13；
9 wall thickness 0.05 of pipe of the internal layer polymer transparent elastic pipe 7 and outer layer copolymer transparent elastic pipe~
0.5mm, material therefor are that polyurethane PU, terylene, expanded PTFE (ePTFE) etc. have mechanical property similar with vascular wall
The polymer material of energy；10 wall thickness of polymer rigid pipe is 1mm~5mm, and material therefor is polymetylmethacrylate, gathers
Propylene PP, polyvinylchloride, polycarbonate, polyacrylonitrile ABS etc. have the poly- of preferable mechanical stability and corrosion resistance
Close object material.
The outer surface of the internal layer polymer transparent elastic pipe 7 is wound with resistance-strain wire type transducer 8, refers to using electricity
For resistance strain silk in the uniformly circumferential winding of the outer surface of internal layer polymer transparent elastic pipe 7, screw pitch is 0.03~0.5mm, be allowed to
Coiled type is covered on the outer surface that internal layer polymer transparent elastic pipe 7 is coated with 8 region of intravascular stent, measures intravascular stent 8
The average radial support force of domain of the existence passes through corresponding software real-time display intravascular stent and internal layer polymer transparent elastic pipe 7
The average contact pressure data of the simulated blood vessel wall constituted with outer layer copolymer transparent elastic pipe 9 obtain intravascular stent location
The Average Radial Pressure value in domain, and carry out data analysis.
The coil method of the resistance-strain wire type transducer 8 be alloy wire or semiconductor silk material, a diameter of 0.015
~0.05mm, the alloy wire sensitivity coefficient are 2~6, and semiconductor silk material sensitivity coefficient is 150 or more.
The alloy wire or semiconductor silk material is corronil, Aludirome, nichrome, platinum or platinum alloy
Deng.
The bracket average radial support force monitoring device 4 is used for simulated blood vessel medium vessels bracket 6 in experimentation
In average radial support force or simulated blood vessel in the average radial compressing force of bracket is monitored, dynamometry range be 0.0006
~170MPa, the real-time measurement of the intravascular stent 6 suitable for different sizes, material and construction.
The internal layer polymer transparent elastic pipe 7, resistance-strain wire type transducer 8, outer layer copolymer transparent elastic pipe 9
The face that contacts with each other between polymeric transparent rigid pipe 10 is smooth, and fitting is without opposite sliding.
The intravascular stent 6 along the circumferential direction contacts internal layer polymer transparent elastic pipe 7, and in directly acting on and being coated on
On resistance-strain wire type transducer 8 in outer layer elastic tube, the radial force being applied on intravascular stent 6 is divided evenly, effect
It is acquired in the force value of cell winding by the change in resistance of sensor.
Embodiment 1
Device as shown in Figure 2 selects the intravascular stent 6 of test that can drop for the WE43 magnesium alloy balloon-expandable of braiding forming
Intravascular stent is solved, the bracket held with a firm grip of pressure is preloaded on foley's tube, is transported in internal layer PU transparent elastic pipe 7, using filling
Pressure pump Filled Balloon be full of to nominal pressure, bracket is by internal layer PU transparent elastic pipe 7, nichrome resistance-strain wire coil 8, outer
Layer PU transparent elastic pipe 9 is outwardly against while stent-expansion, the sacculus of distal end of catheter are withdrawn from after decompression is shunk, use
Corrosive medium is simulating blood plasma solution, and temperature is 37 DEG C, flow field velocity is controlled by adjustable speed peristaltic pump 1, in corrosive medium stream
In body, the radial support power of magnesium alloy bracket is constantly reduced with the degradation of itself, can record bracket average radial branch in real time
Support force influences research to the degradation of degradable magnesium alloy bracket for load and provides scientific basis with the decaying of degradation process.
Embodiment 2
Device used is identical as case study on implementation 1, and the intravascular stent 6 of the test of selection is the NiTi shape of laser engraving forming
Shape memory alloys self-expanding type blood vessel dilator, bracket is preloaded on delivery conduit, is placed in PU transparent elastic pipe 7, is led to
It crosses silica gel hose 5 to be connected on simulation blood circulation device, the corrosive medium used passes through adjustable speed peristaltic pump for simulating blood plasma
1 control flow field velocity, adjusting temperature is 37 DEG C, reaches the transition temperature of alloy, and bracket gradually deforms expansion and produces to elastic tube
Raw support force selects constantan wire to strain silk as metallic resistance, records being averaged in stent-expansion process and retraction process in real time
Influence of the blood flow to intravascular stent radial support power is studied in the variation of radial support power.
To make the object, technical solutions and advantages of the present invention clearer, the technical solution below in the present invention carries out clear
Chu is fully described by, it is clear that described case study on implementation is a part of case study on implementation of the present invention, rather than whole implementation cases
Example.Based on the case study on implementation in the present invention, those of ordinary skill in the art are obtained without making creative work
Every other case study on implementation, shall fall within the protection scope of the present invention.
Claims (9)
1. a kind of experimental provision of real-time monitoring simulated blood vessel medium vessels bracket radial support power, it is characterised in that: the device packet
Include adjustable speed peristaltic pump (1), reservoir (2), water bath (3), bracket average radial support force monitoring device (4) and each portion of connection
Silica gel hose (5) between part, the silica gel hose (5) run through the inside of adjustable speed peristaltic pump (1), and one end and liquid storage
The connection of slot (2), the other end are connect with bracket average radial support force monitoring device (4), reservoir (2) and bracket average diameter
It links together to another silica gel hose (5) is passed through between support force monitoring device (4), constitutes cyclic corrosion medium flow field ring
Border；
Reservoir (2) setting is in water bath (3)；
The bracket average radial support force monitoring device (4) includes intravascular stent (6), internal layer polymer transparent elastic pipe
(7), resistance-strain wire type transducer (8), outer layer copolymer transparent elastic pipe (9), polymeric transparent rigid pipe (10), fixing sleeve
(11), data collector (12) and computer (13), the intravascular stent (6) are mounted on internal layer polymer transparent elastic pipe (7)
Pipe in, the outer surface of internal layer polymer transparent elastic pipe (7) is wound with resistance-strain wire type transducer (8), outer layer copolymer
Transparent elastic pipe (9) is fitted in outside resistance-strain wire type transducer (8) coil, and internal layer polymer transparent elastic pipe (7) and outer
Resistance-strain wire type transducer (8) is wrapped in therebetween by one polymer transparent elastic pipe (9), and the outer layer copolymer is saturating
Bright elastic tube (9) is mounted in polymeric transparent rigid pipe (10) by fixing sleeve (11), and data collector (12) is answered with resistance
Become wire type transducer (8) to be connected, and is connect with computer (13).
2. a kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power as described in claim 1,
Be characterized in that: the internal layer polymer transparent elastic pipe (7) and outer layer copolymer transparent elastic pipe (9) are simulated blood vessel wall, and
The pipe thickness of internal layer polymer transparent elastic pipe (7) and outer layer copolymer transparent elastic pipe (9) be for 0.1~0.5mm,
Material is polyurethane PU, terylene or expanded PTFE.
3. a kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power as described in claim 1,
Be characterized in that: the wall thickness of the polymeric transparent rigid pipe (10) is 1mm~5mm, and material is PMMA, that is, polymethylacrylic acid
Methyl esters, PP, that is, polypropylene, PVC, that is, polyvinyl chloride, PC, that is, polycarbonate or ABS, that is, polyacrylonitrile.
4. a kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power as described in claim 1,
Be characterized in that: the outer surface of the internal layer polymer transparent elastic pipe (7) is wound with resistance-strain wire type transducer (8), refers to
Using resistance-strain silk in the uniformly circumferential winding of the outer surface of internal layer polymer transparent elastic pipe (7), screw pitch is 0.03~
0.5mm is allowed to be covered on the outer surface that internal layer polymer transparent elastic pipe (7) is coated with intravascular stent (8) region with coiled type,
Measure the average radial support force of intravascular stent (8) domain of the existence.
5. a kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power as described in claim 1,
Be characterized in that: the coil method of the resistance-strain wire type transducer (8) be alloy wire or semiconductor silk material, it is a diameter of
0.015~0.05mm, and the sensitivity coefficient of the alloy wire is 2~6, semiconductor silk material sensitivity coefficient is 150 or more.
6. a kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power as claimed in claim 5,
Be characterized in that: the alloy wire or semiconductor silk material is that corronil, Aludirome, nichrome, platinum or platinum close
One of gold.
7. a kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power as described in claim 1,
Be characterized in that: the bracket average radial support force monitoring device (4) is for testing simulated blood vessel medium vessels bracket (6)
The average radial compressing force of bracket is monitored in average radial support force or simulated blood vessel in the process, dynamometry range is
0.0006~170MPa.
8. a kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power as described in claim 1,
It is characterized in that: the internal layer polymer transparent elastic pipe (7), resistance-strain wire type transducer (8), the transparent bullet of outer layer copolymer
Property pipe (9) and polymeric transparent rigid pipe (10) between the face that contacts with each other it is smooth, fitting is without opposite sliding.
9. a kind of experimental provision of real-time monitoring simulated environment medium vessels bracket radial support power as described in claim 1,
Be characterized in that: water bath (3) temperature is adjustable.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114452033A (en) * | 2022-04-13 | 2022-05-10 | 深圳市库珀科技发展有限公司 | Ureteral stent and test device thereof |
| CN115672431A (en) * | 2022-10-18 | 2023-02-03 | 哈尔滨工业大学（威海） | Extracorporeal circulation and intraluminal intervention isolated blood vessel constant temperature auxiliary device |
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