Method and apparatus for single needle dialysis

Details Method and apparatus for single needle dialysis Method and apparatus for single needle dialysis

1989-04-13

1990-07-10

Hafer, Robert A.

Surgery

Blood drawn and replaced or treated and returned to body

Constituent removed from blood and remainder returned to body

128DIG3, A61M 100

Patent

active

049404555

ABSTRACT:
A dialysis apparatus includes a series blood circuit that extends from a single needle through a hemodialyzer and back to the needle. Extending from this circuit is a single ended arm that includes a pump and a blood accumulation chamber. The pump is cyclically operated in opposite directions (in cooperation with associated valves) to alternately withdraw blood from the patient to the chamber and to expel blood from the chamber back to the patient. During one of these operations, blood flows through the dialyzer. By hydraulically isolating the pump and expansion chamber from the series blood circuit, the apparatus avoids large pressure swings and the attendant ultrafiltration that can occur with other single needle systems.

REFERENCES:
patent: 3908653 (1975-09-01), Kettering
patent: 4514295 (1985-04-01), Mathieu et al.
patent: 4614590 (1986-09-01), Rath et al.
patent: 4648866 (1987-03-01), Malbrancq et al.
patent: 4776837 (1988-10-01), Kopp

Affiliated with

Also associated with

Rating

Method and apparatus for single needle dialysis does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for single needle dialysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for single needle dialysis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1719194