Having Enclosed Rotary Member For Directly Impelling Blood Flow Patents (Class 623/3.13)
Blood flow along electromagnetic section of stator member (Class 623/3.14)
Rotary member driven by flexible shaft (e.g., cable, etc.) (Class 623/3.15)
  • Auxiliary artificial heart of an embedded type
    Patent number: 6346120
    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.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: February 12, 2002
    Assignees: Sun Medical Technology Research Corporation, NOK Corporation, Seiko Epson Corporation
    Inventors: Kenji Yamazaki, Toshio Mori, Haruo Iiyama, Shunichi Yamazaki, Nobutaka Ito, Osami Miyao, Masanori Hori, Yukio Iwasaki, Hitoshi Adachi, Kouji Higuchi
  • Auxiliary artificial heart of an embedded type
    Patent number: 6336939
    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.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: January 8, 2002
    Assignees: Sun Medical Technology Research Corporation, NOK Corporation, Seiko Epson Corporation
    Inventors: Kenji Yamazaki, Toshio Mori, Haruo Iiyama, Shunichi Yamazaki, Nobutaka Ito, Osami Miyao, Masanori Hori, Yukio Iwasaki, Hitoshi Adachi, Kouji Higuchi
  • Auxiliary artificial heart of an embedded type
    Publication number: 20010041934
    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.
    Type: Application
    Filed: June 12, 2001
    Publication date: November 15, 2001
    Applicant: Sun Medical Technology Research Corporation; NOK Corporation; Seiko Epson Corporation
    Inventors: Kenji Yamazaki, Toshio Mori, Haruo Iiyama, Shunichi Yamazaki, Nobutaka Ito, Osami Miyao, Masanori Hori, Yukio Iwasaki, Hitoshi Adachi, Kouji Higuchi
  • Auxiliary artificial heart of an embedded type
    Patent number: 6302910
    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.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: October 16, 2001
    Assignees: Sun Medical Technology Research Corporation, NOK Corporation, Seiko Epson Corporation
    Inventors: Kenji Yamazaki, Toshio Mori, Haruo Iiyama, Shunichi Yamazaki, Nobutaka Ito, Osami Miyao, Masanori Hori, Yukio Iwasaki, Hitoshi Adachi, Kouji Higuchi
  • System for treating congestive heart failure
    Patent number: 6280377
    Abstract: A system is provided for regulating blood flow to a portion of the vasculature, such as the renal system, in order to treat heart disease. A regulator maintains blood flow so as to control physiological feedback responses in order to relieve overload conditions on the heart.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: August 28, 2001
    Assignee: Scimed Life Systems, Inc.
    Inventor: Dnyanesh Talpade