Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis
Patent
1993-12-15
1995-03-14
Lewis, Ralph A.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
623 66, 604 28, A61F 204
Patent
active
053973542
ABSTRACT:
A method for removing a toxic substance from a patient utilizes a filtering device defining a first fluid flow path and a second fluid flow path. The filtering device also includes a semipermeable membrane separating the first fluid flow path and the second fluid flow path from one another, the membrane being selectively permeable to the toxic substance. The filtering device additionally includes a reservoir and a pump, the reservoir being located along the second fluid flow path between the membrane and the second inlet port. The filtering device is inserted into the patient so that it is totally surrounded by the patient, the filtering device is connected to a blood vessel of the patient so that blood from the artery is shunted along the first fluid flow path. An outlet end of the second fluid flow path is connected to the urinary bladder of the patient. The inlet end of the second fluid flow path is disposed at the skin surface of the patient to enable a periodic refilling of the reservoir with a working fluid. Upon installation of the filtering device in the patient, the pump is operated to transfer working fluid along the second fluid flow path from the reservoir to the urinary bladder of the patient while blood flows along the first fluid flow path, thereby enabling transfer of the toxic substance from the patient's blood through the membrane to the working fluid in the second fluid flow path.
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Gruber Steven J.
Wilk Peter J.
Coleman Henry D.
Lewis Ralph A.
Sudol R. Neil
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