CN217520934U - Device for measuring torsion of artificial blood vessel/stent - Google Patents
Device for measuring torsion of artificial blood vessel/stent Download PDFInfo
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- CN217520934U CN217520934U CN202221596737.0U CN202221596737U CN217520934U CN 217520934 U CN217520934 U CN 217520934U CN 202221596737 U CN202221596737 U CN 202221596737U CN 217520934 U CN217520934 U CN 217520934U
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Abstract
The utility model provides a device for measuring the torsion force of an artificial blood vessel/a stent and a use method thereof, belonging to the technical field of the torsion force test of the artificial blood vessel/the stent; the technical problem to be solved is as follows: the improvement of the structure of the device for measuring the torsion force of the artificial blood vessel/stent is provided; the technical scheme for solving the technical problems is as follows: the device comprises an integral support frame, wherein pulleys are respectively arranged on two sides of the integral support frame, a first fixed pulley is fixed on each pulley, second fixed pulleys are respectively arranged on vertical beams on two sides of the integral support frame, the pulleys on the two sides are connected through a movable cross beam, a sleeve is fixed on the movable cross beam, a first fixed assembly is fixed on each sleeve, a second fixed assembly is arranged below each first fixed assembly, the second fixed assemblies are placed on a biaxial experimental stretcher, and a triangular heightening device is placed on the biaxial experimental stretcher; the utility model discloses be applied to artificial blood vessel/support torsional force test.
Description
Technical Field
The utility model provides a device for measuring artificial blood vessel/support torsional force belongs to artificial blood vessel/support measuring device technical field.
Background
After the stent or the artificial blood vessel is implanted into a human body, the successful implantation of the stent or the artificial blood vessel can be greatly influenced by complex dynamic mechanical environment in the human body. Due to the different locations of vascular disease in humans, the size of the stent/vascular prosthesis to be implanted is different, and therefore a device is needed to be able to measure the mechanical properties of tubular materials of different sizes, such as torsion, bending, etc. The ideal stent or vascular prosthesis can accommodate stretching/compression, bending, twisting, etc. caused by limb movement. The traditional blood vessel stent/artificial blood vessel measuring method is simple, quasi-static and one-dimensional stretching, bending, compressing and twisting. At present, the existing method and device for measuring the torsion have low accuracy and cannot simulate the complex physiological environment of human blood vessels. Therefore, the utility model provides a device for measuring artificial blood vessel/support torsional force can utilize 3D to print not unidimensional part and fix not unidimensional tubular material to this reaches the purpose of measuring not unidimensional tubular material torsional force.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: an improvement in the structure of a device for measuring the torque of an artificial blood vessel/stent is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a device for measuring artificial blood vessel/support torsional force, includes whole support frame, the both sides of whole support frame are provided with the coaster respectively, be fixed with first fixed pulley on the coaster, there is the second fixed pulley on the perpendicular roof beam in both sides of whole support frame respectively, are connected through moving beam between the coaster of both sides, be fixed with the sleeve on the moving beam, be fixed with first fixed subassembly on the sleeve, first fixed subassembly below is provided with the fixed subassembly of second, the fixed subassembly of second is placed on biax experiment stretcher, the triangle-shaped ware that increases has been placed on the biax experiment stretcher.
The sleeve specifically adopts transparent sleeve, transparent sleeve top is provided with the camera of biax experiment stretcher.
First fixed subassembly includes the bearing fixed axle, the bearing fixed axle is fixed on the sleeve, the cover is equipped with the bearing on the bearing fixed axle, and sets up the bearing packing ring between bearing and the bearing fixed axle, the terminal extension of bearing is provided with first sample fixed axle.
The second fixing component comprises a fixing support, and a second sample fixing shaft is arranged on the fixing support.
A plurality of small holes for threading are formed in the first sample fixing shaft.
And the second sample fixing shaft is provided with a plurality of small holes for threading.
Be provided with the cotton rope fixed slot on the bearing, the bearing top is provided with the scale.
The utility model discloses beneficial effect for prior art possesses does: the device for measuring the torsion of the artificial blood vessel/the stent provided by the utility model can be used in cooperation with a biotester, and not only can be observed and measured accurately in mechanics, but also accurate and clear data and images can be obtained; meanwhile, the former quasi-static test can be changed, the dynamic measurement mode is used, the dynamic measurement mode is closer to the real mechanical environment of a human body, and the data are more real and reliable.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a front view of the device bracket of the present invention;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
fig. 5 is a schematic structural view of a first fixing assembly of the present invention;
fig. 6 is a schematic structural view of a second fixing assembly of the present invention;
FIG. 7 is a schematic structural view of a vascular torsion test using the inventive apparatus in combination with a biaxial laboratory stretcher;
in the figure: 1 is an integral supporting frame, 2 is a sleeve, 3 is a pulley, 4 is a first fixed pulley, 5 is a second fixed pulley, 6 is a triangular heightening device, 7 is a cross beam, 8 is a movable cross beam, 9 is a vertical beam, 10 is a connecting plate, 11 is a roller, 12 is a first fixing component, 13 is a second fixing component, 14 is a fixed beam, and 15 is a biaxial experimental stretcher;
121 is a bearing fixing shaft, 122 is a bearing washer, 123 is a bearing, 124 is a string fixing groove, 125 is a first sample fixing shaft, 131 is a second sample fixing shaft, and 132 is a fixing bracket.
Detailed Description
As shown in fig. 1 to 7, the utility model relates to a device for measuring artificial blood vessel/support torsional force, including whole support frame 1, the both sides of whole support frame 1 are provided with coaster 3 respectively, be fixed with first fixed pulley 4 on coaster 3, have second fixed pulley 5 on the both sides vertical beam 9 of whole support frame 1 respectively, be connected through moving beam 8 between the coaster 3 of both sides, be fixed with sleeve 2 on the moving beam 8, be fixed with first fixed subassembly 12 on the sleeve 2, first fixed subassembly 12 below is provided with the fixed subassembly 13 of second, the fixed subassembly 13 of second is placed on biax experiment stretcher 15, it increases ware 6 to have placed triangle-shaped on the biax experiment stretcher 15.
The sleeve 2 specifically adopts a transparent sleeve, and a camera of a biaxial experiment stretcher 15 is arranged above the transparent sleeve.
The first fixing component 12 comprises a bearing fixing shaft 121, the bearing fixing shaft 121 is fixed on the sleeve 2, a bearing 123 is sleeved on the bearing fixing shaft 121, a bearing pad 122 is arranged between the bearing 123 and the bearing fixing shaft 121, and a first sample fixing shaft 125 is arranged at the tail end of the bearing 121 in an extending mode.
The second fixing assembly 13 includes a fixing bracket 132, and the second sample fixing shaft 131 is disposed on the fixing bracket 132.
The first sample fixing shaft 125 is provided with a plurality of small holes for threading.
The second sample fixing shaft 131 is provided with a plurality of small holes for threading.
The bearing 123 is provided with a wire fixing groove 124, and the top end of the bearing 123 is provided with scales.
A method of using a device for measuring vascular prosthesis/stent torsional force, using a device for measuring vascular prosthesis/stent torsional force as described above, comprising the steps of:
fixing the upper end of the tubular sample to the first sample fixing shaft 125 through the small hole on the first sample fixing shaft 125 by using an operation string, and similarly, fixing the lower end of the tubular sample to the second sample fixing shaft 131 through the small hole on the second sample fixing shaft 131 by using an operation string;
connecting the triangular heightening device 6 with a holding system of a biaxial experimental stretcher 15 and a rope, wherein the rope is connected with the top of the triangular heightening device 6 and two groups of fixed pulleys and finally wound on a rope fixing groove 124;
when the tubular sample is well fixed and the thread rope is well fixed, the biaxial experiment stretcher 15 is started, the holding system starts to exert force according to the specified parameters, the bearing 123 at the upper end of the sample starts to rotate, the first sample fixing shaft 125 is driven to rotate, the tubular sample fixed on the first sample fixing shaft 125 also rotates along with the tubular sample, and the lower end of the tubular sample is fixed, so that the tubular material is twisted;
the height of the beam and thus the height of the first sample fixing shaft 125 can be adjusted by the trolley 3 to accommodate the measurement of tubular samples of different lengths.
Adjusting the height of the pulley 3 on one side to enable the sleeve 2 to be in an inclined state;
when the blood vessel/artificial blood vessel/blood vessel stent is fixed on the first sample fixing shaft 125 and the second sample fixing shaft 131, the tubular material is in a bent state, and then a torsion test is performed in the bent state.
The first and second sample fixing shafts 125 and 131 can be replaced with shafts of different diameters to accommodate the testing of tubular samples of different diameters.
The utility model provides a device for measuring artificial blood vessel/support torsional force mainly comprises aluminium alloy constitutes whole support frame 1, whole support frame 1 includes two aluminium alloy crossbeams 7 at the top, and two aluminium alloy vertical beams 9 on the left and right sides respectively, two aluminium alloy crossbeams 7 at the top are fixed respectively through aluminium alloy fixed beams 14 on both sides between two aluminium alloy crossbeams 7, wherein the fixed beam can be placed on the top and also can be placed below to complete the fixing of crossbeam 7, two aluminium alloy vertical beams 9 on each side are connected through pulley 3, and a movable crossbeam 8 is fixedly connected between pulleys 3 on both sides, wherein the pulley 3 includes two connecting plates 10, four rollers 11 are fixed on each connecting plate 10, four rollers 11 are connected in the groove of aluminium alloy vertical beam 9 in a rolling manner, movable crossbeam 8 is fixed between two connecting plates 10, and a first fixed pulley 4 is fixed on one of connecting plates 10 of each pulley 3, fix second fixed pulley 5 on the aluminium alloy of coaster 3 below erects roof beam 9, wherein second fixed pulley 5 sets up in the aluminium alloy of both sides is erect roof beam 9 on the mistake, for example the second fixed pulley 5 of the aluminium alloy of the left side erects the roof beam 9 is fixed on the vertical roof beam of the left side, then the second fixed pulley 5 of the aluminium alloy of the right side erects the roof beam 9 is fixed on the vertical roof beam of the right side.
The device of the utility model is used for realizing the accurate analysis of the torsion mechanics of the human body blood vessel/artificial blood vessel/blood vessel bracket with different scales (length/diameter). In use, the upper end of the tubular sample is fixed to the first sample fixing shaft 125, and is fixed to the tubular sample by a surgical thread through a small hole in the first sample fixing shaft 125. Similarly, the lower end of the tubular sample is fixed to the second sample fixing shaft 131 in the same manner. The triangular heightening device 6 is used for being connected with a holding system and a rope line of a biaxial experiment stretcher, the rope line is connected with the top of the triangular heightening device 6, and two groups of fixed pulleys, namely a first fixed pulley 4 and a second fixed pulley 5, are finally wound on the rope fixing groove 124, when a tubular sample is fixed and the rope is fixed, the biaxial experiment stretcher biotester machine is started, the holding system starts to exert force with specified parameters, the bearing 123 at the upper end of the sample starts to rotate, the first sample fixing shaft 125 is driven to start to rotate, the tubular sample fixed on the first sample fixing shaft 125 also rotates along with the tubular sample, the lower end of the tubular sample is fixed, and the tubular material is twisted.
The utility model discloses a sleeve 2 adopts transparent pipe box, and bearing 123 top is carved with the number of degrees, can clearly observe the camera of taking certainly on the biaxial experiment stretcher to twist reverse the time bearing on the scale change. The pulley 3 can adjust the height of the bearing fixing shaft 121, so that the height of the first sample fixing shaft 125 can be adjusted to adapt to the measurement of tubular samples with different lengths. The first and second sample fixing shafts 125 and 131 can be replaced by shafts with different diameters to adapt to the test of tubular samples with different diameters.
The utility model discloses a rope is connected to the gyro wheel 11 of the left and right sides vertical beam 9 upper block 3, drives bearing 123 through the pulling force of biaxial stretching experiment machine 14 to the rope and rotates, drives the torsion of blood vessel support upper end then, and the lower extreme of blood vessel support is fixed. The periphery of the bearing 123 is marked with an angle, the rotating angle can be seen through a camera of the biaxial stretching testing machine 14 during rotation, and the twisting degree of the tubular material can be accurately controlled by adjusting the pulling force of the biaxial stretching testing machine 14. The parts for fixing the upper end and the lower end of the blood vessel/stent have different sizes and are adaptive, so that the fixation of tubular materials with different diameters can be met. The side surface of the device can adjust the height of the fixed position of the upper end so as to adapt to tubular materials with different lengths.
The device can also test the torsional mechanical property of the blood vessel/artificial blood vessel/blood vessel stent in a bending state. The mechanical environment of the blood vessel is complex, and the blood vessel is often in a bending state and is also subjected to torsional force. The simulation of the complex state of the blood vessel/artificial blood vessel/blood vessel stent and the test of the torsional mechanics of the tubular material in the bending state have important significance, and the state of the blood vessel can be evaluated in multiple directions, and the performance of the artificial blood vessel and the blood vessel stent can be evaluated. The specific test steps are as follows: the height of the pulley at one side of the pulley 3 is adjusted, so that the sleeve 2 is in an inclined state, and the inclination angle of the sleeve 2 depends on the adjustment degree of the pulley 3 and can be adjusted to different angles. The inclination of the sleeve 2 causes the first sample fixing shaft 125 to have a certain inclination angle. When the blood vessel/artificial blood vessel/blood vessel stent is fixed on the first sample fixing shaft 125 and the second sample fixing shaft 131, the tubular material is in a bent state due to the fixation of the first sample fixing shaft 125 and the second sample fixing shaft 131, and then a torsion test is performed in the bent state.
About the utility model discloses what the concrete structure needs to explain, the utility model discloses a each part module connection relation each other is definite, can realize, except that the special explanation in the embodiment, corresponding technological effect can be brought to its specific connection relation to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model discloses except that the model, the connected mode of the part that appear, module, concrete components and parts, all belong to the prior art such as the published patent that can acquire in the field of technical staff at the application day ahead, published journal thesis, or common general knowledge, need not to describe repeatedly for the technical scheme that the present case provided is clear, complete, can realize, and can reappear or obtain corresponding entity product according to this technical means.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A device for measuring vascular prosthesis/stent torsional forces, characterized by: including whole support frame, the both sides of whole support frame are provided with the coaster respectively, be fixed with first fixed pulley on the coaster, there is the second fixed pulley on the both sides perpendicular roof beam of whole support frame respectively, is connected through the movable cross beam between the coaster of both sides, be fixed with the sleeve on the movable cross beam, be fixed with first fixed subassembly on the sleeve, first fixed subassembly below is provided with the fixed subassembly of second, the fixed subassembly of second is placed on biax experiment stretcher, it increases the ware to have placed triangle-shaped on the biax experiment stretcher.
2. A device for measuring vascular prosthesis/stent torque as in claim 1, wherein: the sleeve specifically adopts transparent sleeve, transparent sleeve top is provided with the camera of biax experiment stretcher.
3. A device for measuring vascular prosthesis/stent torque as in claim 2, wherein: the first fixing assembly comprises a bearing fixing shaft, the bearing fixing shaft is fixed on the sleeve, a bearing is sleeved on the bearing fixing shaft, a bearing washer is arranged between the bearing and the bearing fixing shaft, and a first sample fixing shaft extends from the tail end of the bearing.
4. A device for measuring vascular prosthesis/stent torque as in claim 2, wherein: the second fixing component comprises a fixing support, and a second sample fixing shaft is arranged on the fixing support.
5. A device for measuring vascular prosthesis/stent torque as in claim 3, wherein: a plurality of small holes for threading are formed in the first sample fixing shaft.
6. An apparatus for measuring vascular prosthesis/stent torque as in claim 4, wherein: and the second sample fixing shaft is provided with a plurality of small holes for threading.
7. A device for measuring vascular prosthesis/stent torque as in claim 3, wherein: be provided with the cotton rope fixed slot on the bearing, the bearing top is provided with the scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221596737.0U CN217520934U (en) | 2022-06-24 | 2022-06-24 | Device for measuring torsion of artificial blood vessel/stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221596737.0U CN217520934U (en) | 2022-06-24 | 2022-06-24 | Device for measuring torsion of artificial blood vessel/stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217520934U true CN217520934U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221596737.0U Active CN217520934U (en) | 2022-06-24 | 2022-06-24 | Device for measuring torsion of artificial blood vessel/stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217520934U (en) |
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2022
- 2022-06-24 CN CN202221596737.0U patent/CN217520934U/en active Active
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