The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 2002
Filed:
Dec. 22, 1999
Kenji Yamazaki, Koganei, JP;
Toshio Mori, Chino, JP;
Haruo Iiyama, Chino, JP;
Shunichi Yamazaki, Suwa, JP;
Nobutaka Ito, Chino, JP;
Osami Miyao, Ebina, JP;
Masanori Hori, Hatano, JP;
Yukio Iwasaki, Suwa, JP;
Hitoshi Adachi, Fujimi-Machi, JP;
Kouji Higuchi, Shiojiri, JP;
Other;
Abstract
An artificial heart has a driving section, a nozzle section, a pump section for insertion into a ventricle of a human heart, and a sealing section forming a seal for a driving shaft extending from the driving section for driving the pump section. A sealing liquid chamber filled with a sealing liquid is formed around the driving shaft between the sealing mechanism and the driving section. The sealing liquid in the sealing liquid chamber maintains the sealing mechanism in a liquid-tight state and lubricates the sealing mechanism, whereby blood is prevented from entering the driving section. Even if blood happens to enter the driving section, the blood is mixed with the sealing liquid and does not coagulate. Thus, the operation of the artificial heart is not suppressed.