Summary
A method for investigating stretching of small blood vessels is presented. Stress and strain properties of the isolated parasagittal bridging veins were studied. These veins were stressed along their long axis and torn apart at various constant strainrates. The bridging vein's strain capacity was found to be dependent on strain rate, maximal strain was markedly reduced as the rate was increased. The maximal tension in the veins increases as the time to tearing decreases. The tearing tension was shown to be lower for bridging veins as compared to larger veins (femoral, popliteal, inferior vena cava).
Zusammenfassung
Eine Methode zur Untersuchung der Reißfestigkeit bei Streckung kleiner Blutgefäße wird beschrieben. Die Spannungs- und Dehnungseigenschaften isolierter parasagittaler Brückenvenen (Vv. cerebri sup.) wurden untersucht. Die Venen wurden in ihrer Längsrichtung belastet und rissen bei verschiedenen konstanten Dehnungsgeschwindigkeiten. Das maximale Dehnungsvermögen wurde bei größerer Dehnungsgeschwindigkeit stark herabgesetzt. Die maximale Spannung in den Brückenvenen stieg, wenn die Zeit bis zum Abriß kürzer war. Die Zerreißspannung war für Brückenvenen geringer als für größere Venen (V. femoralis, V. poplitea, V. cava inf.).
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Adams, H., Graham, D. I.: The pathology of blunt head injuries. Scientific Foundations of Neurology, pp. 478–491
Freytag, E.: Autopsy findings in head injuries from blunt forces. Arch. Path.75, 402–413 (1963)
Fung, Y-C.B.: Biomechanics. Its scope, history and some problems of continuum mechanics in physiology. Appl. Mechanics Rev.21, 1–20 (1968)
Gierke, H. von: On the dynamics of some head injury mechanisms. In: Head injury, Caveness, W. F., Walker, A. E., Eds., pp. 383–396. Philadelphia-Toronto: Lippincott 1966
Goldsmith, W.: The physical processes producing head injuries. In: Head injury, Caveness, W. F., Walker, A. E., Eds., pp. 350–382. Philadelphia-Toronto: Lippincott 1966
Higgins, L. S., Schmall, R. A.: A devive for the investigation of head injury effected by non-deforming head accelerations. Proc. 11th Stapp Car Crash Conf., pp. 35–45 (1967)
Koishi, T.: The fundamental study on the tension test of blood vessels. J. Kyoto Pref. Med. Univ.49, 27–49 (1951)
Lindenberg, R., Freytag, E.: The mechanism of cerebral contusions. Arch. Path.69, 440–469 (1960)
Ljung, A. B. C.: Studies of the motion of the brain at a suddenly applied rotation of the skull. International Conference on the Biokinetics of Impacts. Conf. Proc., pp. 303–309 (1973)
Mochizuki, T.: On the mechanical strength of the human blood vessels. J. Kyoto Pref. Med. Univ.52, 1–29 (1952)
Ommaya, A. K.: Mechanical properties of tissues of the nervous system. J. Biomech.1, 127–138 (1968)
Patel, D. J., Fry, D. L.: Longitudinal tethering of arteries in dogs. Circulat. Res.14, 1011–1021 (1966)
Patel, D. J., Janicki, J. S., Vaishnav, R. N., Young, J. T.: Dynamic anisotropic viscoelastic properties of the aorta in living dogs. Circulat. Res.33, 93–107 (1973)
Perese, D. M.: Superficial veins of the brain from a surgical point of view. J. Neurosurg.16, 402–412 (1959)
Pudenz, R. H., Sheldon, C. H.: The lucite calvarium — A method for direct observation of the brain. J. Neurosurg.3, 487–505 (1946)
Sellier, K., Unterharnscheidt, F.: Mechanik und Pathomorphologie der Hirnschäden nach stumpfer Gewalteinwirkung auf den Schädel. Hefte Unfallheilk.76 (1963)
Strich, J. S.: The pathology of brain damage due to blunt head injuries. In: The late effects of head injury, Walker, A. E., Caveness, W. F., Critchley, M., Eds., pp. 501–504. Springfield (Ill.): Thomas
Strich, J. S.: Lesions in the cerebral hemispheres after blunt head injury. J. clin. Path.23; Suppl. (Roy, Coll. Path.)4, 166–171 (1970)
Voigt, G. E.: Personbilens „inre säkerhet” — hur säker är don? Läkartidningen66, 993–1007 (1969 a)
Voigt, G. E.: Huvud- och halsskador vid frontalkollisioner. Läkartidningen68, 1866–1880 (1969 b)
Voigt, G. E., Saldeen, T.: Über den Abriß zahlreicher oder sämtlicher Vv. cerebri sup. mit geringem Subduralhämatom und Hirnstammläsion. Dtsch. Z. ges. gerichtl. Med.64, 9–20 (1968)
Yamada, H.: Strength of biological materials, Evans, F. G., Ed. Baltimore: Williams & Wilkins 1970
Author information
Authors and Affiliations
Additional information
This work was supported by the Transport Research Delegation, Sweden.
Rights and permissions
About this article
Cite this article
Löwenhielm, P. Dynamic properties of the parasagittal bridging beins. Z Rechtsmed 74, 55–62 (1974). https://doi.org/10.1007/BF01869185
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01869185