×

Hydraulically actuated cardiac prosthesis with three-way ventricular valving

  • US 4,397,049 A
  • Filed: 09/15/1981
  • Issued: 08/09/1983
  • Est. Priority Date: 09/15/1981
  • Status: Expired due to Fees
First Claim
Patent Images

1. An implantable hydraulically actuated total cardiac prosthesis comprising:

  • a pair of blood pumping chambers each having a blood inlet, a blood outlet and a flexible portion;

    a pair of actuation chambers each adapted to contain actuation fluid, one of said actuation chambers being operatively associated with one of said blood pumping chambers and the other of said actuation chambers being operatively associated with the other of said blood pumping chambers to cause displacement of the flexible portion of said blood pumping chambers in response to changes in volume of actuation fluid in their associated actuation chambers;

    an actuation fluid reservoir;

    actuation fluid pumping means separate from and in fluid communication with said reservoir for pumping actuation fluid therefrom; and

    a separate three-way valve means associated with each of said actuation chambers, each of said valve means being in fluid communication with its associated actuation chamber, said pumping means and said reservoir, and being adapted to alternately and repetitively direct actuation fluid from said pumping means to its associated actuation chamber and then from its associated actuation chamber to said reservoir;

    said reservoir comprising a separate compliant zone associated with each of said actuation chambers, defined at least in part by a flexible wall portion made from biocompatible elastomeric material, said compliant zones communicating with each other, said pumping means and said valve means by flexible ducting.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×