Patent ID: 8109893
Filing Date: 2012-02-07
Classification: A61M

Abstract:
1. Apparatus for the controlled introduction of a liquid medicament into the vascular system of a patient, comprising: (a) at least one cuff comprising first and second superposed sheets of flexible plastic film selectively bonded to one another to define at least first and second fluid flow paths there between, the first fluid flow path including an expandable and compressible chamber, the second fluid flow path including a reservoir configured to contain the liquid medicament, said cuff configured to be worn on a limb of a person; (b) a first cannula configured for insertion into a blood vessel selectively sequentially exposed to arterial blood pressure and venous blood pressure and a second cannula configured for insertion into a blood vessel exposed to only venous blood pressure, the first cannula being coupled to an inlet of the first fluid flow path on the cuff and the second cannula being coupled to an outlet of the first fluid flow path on the cuff; and (c) a pump device configured to be driven by expansion and compression of the expandable and compressible chamber in said first fluid flow path; and (d) further including a dialyzer coupled to the cuff, the dialyzer comprising a liquid impervious housing containing a plurality of semi-permeable membranous walls and where the first and second cannulae are in fluid communication with a flow path through the dialyzer.