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Method and apparatus for bagless continuous ambulatory peritoneal dialysis

  • US 4,950,230 A
  • Filed: 03/20/1989
  • Issued: 08/21/1990
  • Est. Priority Date: 03/19/1987
  • Status: Expired due to Fees
First Claim
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1. A system for continuous ambulatory peritoneal dialysis apparatus, comprising:

  • a valve having first, second and third fluid ports;

    a first tube having one end secured to the first fluid port and the other end secured to a first connector member, the first connector member being connectable to a mating connector member associated with a first fluid container to provide fluid communication between the first fluid port and the first fluid container;

    a second tube having one end secured to the second fluid port and the other end secured to a second connector member, the second connector member being connectable to a mating connector member associated with a second fluid container to provide fluid communication between the second fluid port and the second fluid container; and

    a third tube having one end secured to the third fluid port and the other end secured to a third connector member, the third connector member being connectable to a mating connector member associated with a catheter which has been surgically implanted in the abdominal wall of a user to provide fluid communication between the third fluid port and the peritoneal cavity of the user,the valve including an actuator moveable sequentially in either order between four positions, a first position in which all of the fluid ports are blocked to prevent the flow of fluid through the valve, a second position in which only the second and third fluid ports are interconnected to provide bi-directional fluid communication therebetween, a third position in which only the first and second fluid ports are interconnected to provide bi-directional fluid communication therebetween, and a fourth position in which only the first and third fluid ports are interconnected to provide bi-directional fluid communication therebetween, the location of the fluid ports and the structure of the actuator being established in a manner so that movement of the actuator between the second and third positions, in either direction, does not result in movement of the actuator through the fourth position and movement of the actuator between the third and fourth positions, in either direction, does not result in movement of the actuator through the second position, the system having a first configuration wherein said first connector member is located at a higher elevation than said third connector member, and wherein said second connector member is located at a lower elevation than said third connector member, such that fluid flows through the valve in a first direction only from said third port to said second port, from said first port to said second port and from said first port to said third port, the system having a second configuration wherein said second connector member is located at an elevation higher than said third connector member, and wherein said first connector member is located at a lower elevation than said third connector member, such that fluid flows through the valve in a second direction only from said third port to said first port, from said second port to said first port and from said second port to said third port.

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