Biomechanical property testing method for blood vessel prosthesis and device thereof
A technology of artificial blood vessels and testing devices, which is applied in the field of performance testing of medical biomaterials, and can solve problems such as fatigue characterization and limitations of achievable mechanical testing functions
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Embodiment 1
[0053] See attached figure 1 , the present embodiment provides the biomechanical performance testing device of the artificial blood vessel, which consists of a liquid storage tank 1, a diversion silicone tube 2, an electronic peristaltic pump 3, a sample fixing device 4, a current limiting switch 5, a pressure testing device 6, and a displacement testing device 7 , wire 8, a computer 9 and a data output device 10 equipped with processing and conversion signals; see attached figure 2 , The sample fixing device 4 is composed of a plexiglass box 41 with holes on the side, a three-way pipe 42, and a two-way pipe 43. The three-way pipe 42 and the two-way pipe 43 are respectively connected together with the plexiglass case 41 through the side holes, and the two ends of the sample S are respectively connected to one end of the three-way pipe 42 and one end of the two-way pipe 43 in the plexiglass case 41 . One of the other two ports of the three-way pipe 42 is connected to the out...
Embodiment 2
[0065] The sample provided in this example is a small-diameter electrospun artificial blood vessel with a diameter of 3 mm and a length of 3 cm, and its biomechanical properties are tested. The specific test steps are as follows:
[0066] (1) Turn on the power supply, turn on the computer 9 and the DC stabilized voltage power supply 62 equipped with processing and conversion signal software, and preheat for twenty minutes to half an hour.
[0067] (2) Add a sufficient amount of liquid into the liquid storage tank 1, wherein the liquid can be water or other liquids that simulate the properties of blood.
[0068] (3) Select the artificial blood vessel sample with a diameter of 3 mm and a length of 3 cm. Select a tee pipe 42 and a two-way pipe 43 with an outer diameter of 3 mm. Put the left end of the sample tightly on the right end of the three-way pipe 42 on the left side of the sample fixing device 4, and then tightly fit the right end of the sample on the left end of the two...
Embodiment 3
[0075] The biomechanical properties of the surface-coated woven polyester artificial blood vessel with a diameter of 10 mm and a length of 8 cm were tested. The specific test steps are as follows:
[0076] (1) Turn on the power supply, turn on the computer 9 and the DC stabilized voltage power supply 62 equipped with processing and conversion signal software, and preheat for twenty minutes to half an hour.
[0077] (2) Add a sufficient amount of liquid into the liquid storage tank 1, wherein the liquid can be water or other liquids that simulate the properties of blood.
[0078] (3) Select the artificial blood vessel sample with a diameter of 10 mm and a length of 8 cm. Select a tee pipe 42 and a two-way pipe 43 with an outer diameter of 10 mm. Put the left end of the sample tightly on the right end of the three-way pipe 42 on the left side of the sample fixing device 4, and then tightly fit the right end of the sample on the left end of the two-way pipe 43 on the right side ...
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