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The purpose of developing a biodegradable polyester film material used to repair the damaged tendon . Methods 30 healthy rabbits were randomly divided into A, B groups : A group the tendon biomechanical test group ( n = 15) ; B - group for the the tendon ultrastructure observation group ( n = 15) . Cut each animal right Achilles tendon 3cm as an object of study . A set of measurements the maximum tensile strength of the tendon , the tensile strength and tendon circumference , B group the electron microscope tendon surface pore size , and then under the guidance of these data to the poly ( caprolactone ) was prepared from a strong tensile strength and the polyester film containing a large number of micropores . Finally , test Characterization of polyester film . 1 , the maximum tensile strength of the rabbit Achilles tendon 145.98 ± 14.38 N , the tensile strength of 20.26 ± 0.84 MPa, the perimeter of the Achilles tendon 9.49 ± 0.36 mm, the size of the Achilles tendon surface porosity is 9.18 ± 0.85μm ; 2, successful Preparation of a polyester film to repair the damaged tendon , this polyester film texture more supple , smooth outer surface , with a large number of microporous has good plasticity , strong tensile strength , good biocompatibility , easy sutured ; 3, a polyester film per 9mm width of the maximum tensile strength of 75N, a tensile strength of 16 MPa , a thickness of approximately 0.3mm . Membrane cross-section holes the size of about 10μm. Conclusion 1 , the tendon biomechanical measurements and ultrastructural observations for the preparation of the polyester film provides a theoretical basis , under the guidance of these data can be successfully prepared to repair the damaged tendon polyester film ; 2 , the experimental the tensile strength of the polyester film prepared over a rabbit Achilles tendon normal physiological activities required mechanical strength, and its section similar pore size and the size of the surface pores of the rabbit Achilles tendon .
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