Device for hemodialysis
First Claim
1. A device for hemodialysis comprising a first, arterial blood conducting circuit means comprising an arterial needle adapted to be inserted into an artery of a patient, a first, blood pump means for forwarding blood from the arterial needle, a hemodialyzer having a first chamber receiving arterial blood from the blood pump, a bubble trap receiving arterial blood from the first chamber of the hemodialyzer, and a venous needle receiving arterial blood from the bubble trap, a second, dialyzing solution conducting circuit means comprising a container holding a dialyzing solution, a solution conducting unit containing sensors, a second chamber of the hemodialyzer, a second dialyzing solution pump means for moving the dialyzing solution from the dialyzing solution container through the unit containing sensors into the second chamber of the hemodialyzer, a hemoglobin detector connected to an outlet of said second pump means, an electronic unit provided with acoustic and optical alarms indicating malfunctions of the hemodialysis device, said electronic unit comprising at least two electrodes in the dialyzing solution, and an A.C. power source means connected to said electrodes for providing a sufficient electrical output to said electrodes which is variable in both frequency and amplitude to inhibit the growth of bacteria in the dialyzing solution.
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Accused Products
Abstract
A device for hemodialysis provided with: an artery needle, a set of hoses with a bubble trap, a blood pump, a hemodialyzer, a venous needle, a container of a dialyzing solution, a conduit for the dialyzing solution, a unit of sensors for measuring the temperature, conductivity, and pressure of the dialyzing solution, a pump for the dialyzing solution, a hemoglobin detector, an electronic unit and an alarm unit providing audible and visual warning signals. The dialyzing solution is heated to a suitable temperature by a heat exchanger which is supplied with waste heat from the cooling system of an automobile engine. The device may be used in a home and for weekend dialysis, as well as for emergency mobile use.
224 Citations
5 Claims
- 1. A device for hemodialysis comprising a first, arterial blood conducting circuit means comprising an arterial needle adapted to be inserted into an artery of a patient, a first, blood pump means for forwarding blood from the arterial needle, a hemodialyzer having a first chamber receiving arterial blood from the blood pump, a bubble trap receiving arterial blood from the first chamber of the hemodialyzer, and a venous needle receiving arterial blood from the bubble trap, a second, dialyzing solution conducting circuit means comprising a container holding a dialyzing solution, a solution conducting unit containing sensors, a second chamber of the hemodialyzer, a second dialyzing solution pump means for moving the dialyzing solution from the dialyzing solution container through the unit containing sensors into the second chamber of the hemodialyzer, a hemoglobin detector connected to an outlet of said second pump means, an electronic unit provided with acoustic and optical alarms indicating malfunctions of the hemodialysis device, said electronic unit comprising at least two electrodes in the dialyzing solution, and an A.C. power source means connected to said electrodes for providing a sufficient electrical output to said electrodes which is variable in both frequency and amplitude to inhibit the growth of bacteria in the dialyzing solution.
Specification