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  • Articles  (4)
  • Articles: DFG German National Licenses  (4)
  • Biomaterials  (4)
  • Springer  (4)
  • 2020-2022
  • 1980-1984  (4)
  • 1925-1929
  • Technology  (4)
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  • Articles  (4)
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  • Articles: DFG German National Licenses  (4)
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  • Springer  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    The influence of the bone-implant interface stiffness on stress profiles surrounding Al2O3 and carbon dental implants (1982)
    Springer
    Annals of biomedical engineering 10 (1982), S. 129-138 
    Details
    ISSN: 1573-9686
    Keywords: Dental implants ; Biomechanics ; Biomaterials ; Finite element analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Dental implants have been used and studied for the replacement of missing teeth for many years. Finite element stress analysis (FESA) has previously been used in their evaluation to study the effect of various design parameters on induced stresses. A twodimensional FESA was used to evaluate the effect that the implant-bone interface elastic modulus has on the stress distribution around LTI carbon and aluminum oxide dental implants. The results of this investigation indicate that a soft tissue interface between implants and bone negates the effect of implant elastic modulus and results in stress profiles that were almost identical for the LTI carbon and aluminum oxide implants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02367461
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  • 2
    Electronic Resource
    Electronic Resource
    Surface characterization of biomaterials by electron spectroscopy for chemical analysis (1983)
    Springer
    Annals of biomedical engineering 11 (1983), S. 313-336 
    Details
    ISSN: 1573-9686
    Keywords: ESCA ; Surface analysis ; Biomaterials ; Protein adsorption ; Polyurethanes ; Thin films
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Electron spectroscopy for chemical analysis (ESCA) is perhaps the most valuable single method available for characterizing the surfaces of biomaterials. The ESCA analytical method is rich in information, observes a relevant surface region, and has been shown to generate results that correlate with biological response. In this article, the analysis of actual ESCA data is illustrated by reviewing a study in which polymer-coated glass surfaces, prepared for use as tissue culture substrates, are examined by ESCA. The application of more advanced ESCA techniques such as angular-dependent analysis to this situation is also considered. Finally, published applications of ESCA to the study of polyurethanes, hydrogels, protein films, cell culture substrates, and dental materials are briefly reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02363290
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A new flow cell for platelet adhesion studies (1982)
    Springer
    Annals of biomedical engineering 10 (1982), S. 71-82 
    Details
    ISSN: 1573-9686
    Keywords: Biomaterials ; Flow cell ; Platelets ; Hot film anemometry ; Laminar flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract A flow cell has been designed and tested for the purpose of exposing platelets to various substrates. The design adopts the principle of flow relaminarization by acceleration to dissipate secondary fluid motions and turbulence so that platelet diffusion will be controlled by Brownian diffusion coefficients. To assess the effectiveness of this flow mechanism two critical tests were undertaken. First, hot film anemometry signals were obtained to observe visually the local fluid velocity in the flow cell. Second, in vitro platelet adhesion results were obtained by exposing glass and silane coated glass to platelet suspensions. Surface platelet concentrations for varying exposure times were compared to a theoretical model which is based on a laminar diffusion model. Both tests confirm that hydrodynamically the flow cell behaves in a manner which is consistent with that of a fully developed, laminar flow with a constant diffusion coefficient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02366999
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  • 4
    Electronic Resource
    Electronic Resource
    Bioengineering aspects of heart valve replacement (1982)
    Springer
    Annals of biomedical engineering 10 (1982), S. 97-128 
    Details
    ISSN: 1573-9686
    Keywords: Heart valve prostheses ; Echocardiography ; Hemodynamics ; Thromboresistance ; Biomaterials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Biomedical engineering inputs have been important in the design, development and testing of substitute heart valves as well as in the pre- and post-operative management of patients with cardiac valve disease. This paper is a review of heart valve replacement whose goal is the enhancement of future bioengineering contributions. We review the approach to the patient with valvular heart disease, and the sources of early and late postoperative pathology with emphasis on complications of the prostheses used. Major significant problem areas relate to the noninvasive evaluation of cardiovascular function (both before and after surgery), device design, hemodynamics, and the need for thromboresistant and durable materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02367460
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    Paper (German National Licenses)
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