초록 ▼

An improved artificial heart (10) for pumping blood. The artificial heart (10) comprises first and second pump units (12 and 14), each including a pump body (16) defining a collapsible bellows (18) and a fluid passageway (20) therethrough. Further, each pump body (16) has a first end portion (22) de

An improved artificial heart (10) for pumping blood. The artificial heart (10) comprises first and second pump units (12 and 14), each including a pump body (16) defining a collapsible bellows (18) and a fluid passageway (20) therethrough. Further, each pump body (16) has a first end portion (22) defining an outlet opening (30) and a second end portion (26) defining an inlet opening (32). Each of the first and second pump units (12 and 14) further comprises first and second valve units (24 and 28). The first valve unit (24) is secured to the first end portion (22) of the pump body (16) in fluid communication with the outlet opening (32), and includes a first one-way valve (38) for allowing blood to flow out of the pump body (16) and restricting the flow of blood into the pump body (16). The second valve unit (28) is secured to the second end portion (26) of the pump body (16) in fluid communication with the inlet openings (32), and includes a second one-way valve for allowing blood to flow into the pump body (16) and restricting the flow of blood out of the pump body (16). The artificial heart (10) also comprises drive means (61) for selectively collapsing and expanding the collapsible bellows (18) of the first and second pump units (12 and 14).

대표청구항 ▼

An improved artificial heart for pumping blood, said heart comprising: first and second pump units, each said first and second pump unit including a pump body defining an axially collapsible bellows of substantially cylindrical shape and having a coaxial fluid passageway therethrough, said pump body

An improved artificial heart for pumping blood, said heart comprising: first and second pump units, each said first and second pump unit including a pump body defining an axially collapsible bellows of substantially cylindrical shape and having a coaxial fluid passageway therethrough, said pump body having a first end portion defining an outlet opening and an oppositely disposed second end portion defining an inlet opening, whereby substantially linear flow of said blood through said fluid passageway from said inlet opening to said outlet opening is achieved, said first and second pump units each having a first valve unit secured to said first end portion of said pump body in fluid communication with said outlet opening, said first valve unit including a first one-way valve for allowing said blood to flow out of said pump body and restricting the flow of said blood into said pump body, each said first and second pump unit also having a second valve unit secured to said second end portion of said pump body in fluid communication with said inlet opening, said second valve unit including a second one-way valve for allowing said blood to flow into said pump body and restricting the flow of said blood out of said pump body; and drive means for selectively collapsing and expanding said bellows of said first and second pump units.