Elastic modulus of prepared canine jejunum, a new vascular graft material

Elastic modulus of prepared canine jejunum, a new vascular graft material

The submucosal connective tissue of the jejunum has been shown to be suitable for use as a vascular graft in preliminary dog studies. To partially characterize the mechanical properties of this new graft material, longitudinal stress (sigma)-strain (epsilon)-data were obtained on 13 specimens of can...

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Bibliographic Details
Published in:Annals of biomedical engineering Vol. 21; no. 6; pp. 727 - 733
Main Authors: HERBERT, S. T, BADYLAK, S. F, GEDDES, L. A, HILLBERRY, B, LANTZ, G. C, KIKINI, K
Format: Journal Article
Language:English
Published: New York, NY Springer 01-11-1993
Subjects:
Animals
Biological and medical sciences
Biomechanical Phenomena
Bioprosthesis
Blood Vessel Prosthesis
Connective Tissue - transplantation
Dogs
Elasticity
Jejunum - transplantation
Medical sciences
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Stress, Mechanical
Technology. Biomaterials. Equipments. Material. Instrumentation
Tensile Strength
Vascular Patency
Fissipedia
Elastic modulus
Carnivora
Mechanical properties
Vertebrata
Mammalia
Jejunum
Animal
Blood vessel
Biomaterial
Dog
Graft surgical
Biomedical engineering
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Summary:The submucosal connective tissue of the jejunum has been shown to be suitable for use as a vascular graft in preliminary dog studies. To partially characterize the mechanical properties of this new graft material, longitudinal stress (sigma)-strain (epsilon)-data were obtained on 13 specimens of canine jejunum, stripped of its mucosal and external smooth-muscle layers. The ratio of stress to strain is the modulus of elasticity (E). It was found that the stress sigma-strain epsilon-data fitted the expression sigma = K epsilon alpha very well. For a typical specimen sigma = 2.69 x 10(6) epsilon 2.33. The modulus of elasticity (E = sigma 1-1/alpha K1/alpha) was found to increase with increasing stress, ranging from about 2,000 to 9,000 mmHg. For the average specimen E = 573 sigma 0.57, where sigma is in mmHg, (1 mmHg = 133.3 Pascals).
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ISSN:0090-6964
1573-9686
DOI:10.1007/BF02368651