Effects of implantation on the mechanical properties of the Polyurethane diaphragm of left ventricular assist devices

Kozaburo Hayashi, Takehisa Matsuda, Hisateru Takano, Mitsuo Umezu, Yoshiyuki Taenaka, Takao Nakamura

研究成果: Article

12 引用 (Scopus)

抄録

Tensile properties of blood pump diaphragms made from a segmented polyether polyurethane (Toyobo TM5) were studied after implanting in goats for variable periods of time up to 72 days. The implantation decreased the tensile strength and ultimate elongation at break, while the elastic modulus increased very slightly. These changes in the strength and ductility were primarily caused by the contact of material with blood rather than by the mechanical fatigue of material. Mechanical stability was greatly improved by removing residual oligomers from the material by a refining procedure. The refined polyurethane has characteristics favourable for blood pump applications.

元の言語English
ページ(範囲)82-88
ページ数7
ジャーナルBiomaterials
6
発行部数2
DOI
出版物ステータスPublished - 1985
外部発表Yes

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Left ventricular assist devices
Heart-Assist Devices
Polyurethanes
Diaphragms
Diaphragm
Blood
Mechanical properties
Pumps
Mechanical stability
Tensile Strength
Polyethers
Elastic Modulus
Tensile properties
Oligomers
Goats
Refining
Fatigue
Ductility
Elongation
Tensile strength

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering

これを引用

Effects of implantation on the mechanical properties of the Polyurethane diaphragm of left ventricular assist devices. / Hayashi, Kozaburo; Matsuda, Takehisa; Takano, Hisateru; Umezu, Mitsuo; Taenaka, Yoshiyuki; Nakamura, Takao.

:: Biomaterials, 巻 6, 番号 2, 1985, p. 82-88.

研究成果: Article

Hayashi, Kozaburo ; Matsuda, Takehisa ; Takano, Hisateru ; Umezu, Mitsuo ; Taenaka, Yoshiyuki ; Nakamura, Takao. / Effects of implantation on the mechanical properties of the Polyurethane diaphragm of left ventricular assist devices. :: Biomaterials. 1985 ; 巻 6, 番号 2. pp. 82-88.
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