INFUSION SITE FOR IMPROVED MIXING OF FLUIDS
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Abstract
The invention relates to a blood line (108) comprising an infusion site (145) intended to inject into the line a solution comprising: —a first main channel (200) having a first passage section, —a second main channel (220) having a second passage section, —means for the formation (210) of a turbulence area located downstream from the first main channel, located upstream from the second main channel, these formation means comprising a first fluid passage means (224) defining a reduction (225) in the passage section and whose smallest passage section is smaller than the first passage section and smaller than the second fluid passage section, —a secondary channel (230) comprising an inlet (231) for letting in the solution and an outlet (232) in fluid communication with the first main channel or the means for the formation of a turbulence area or the second main channel.
0 Citations
58 Claims
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1-34. -34. (canceled)
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35. A method of anticoagulating blood treated during extracorporeal circulation in an extracorporeal circulation blood or plasma treatment device, the extracorporeal circulation blood or plasma treatment device comprising:
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a filter having a first compartment and a second compartment separated by a semipermeable membrane; an arterial line in fluid communication with the first compartment of the filter; a pre-infusion channel for a local anticoagulation substance in fluid communication with the arterial line; a container of a local anticoagulation substance in fluid communication with the pre-infusion channel; a venous blood line in fluid communication with the first compartment of the filter, the venous blood line comprising; a first line portion in fluid communication with an outlet of the filter, a second line portion in fluid communication with a patient'"'"'s vascular access, an infusion site between the first line portion and the second line portion for injecting into the blood line a solution reestablishing blood or plasma ion balance, the infusion site comprising; a first main channel in fluid communication with the first line portion and having a first passage section, a second main channel in fluid communication with the second line portion and having a second passage section, and a turbulence area downstream from and in fluid communication with the first main channel, and upstream from and in fluid communication with the second main channel, the turbulence area comprising a first fluid passage defining a reduction in passage section having a smallest passage section smaller than the first passage section and smaller than the second passage section, and a secondary channel comprising an inlet for the solution reestablishing blood or plasma ion balance and an outlet in fluid communication with at least one of the first main channel, the turbulence area and the second main channel; and a container of solution reestablishing blood or plasma ion balance in fluid communication with the secondary channel of the infusion site via a post-infusion line; the method comprising; a) flowing blood or plasma through the arterial line, b) infusing the local anticoagulation substance through the pre-infusion channel into the arterial line, c) filtering blood through the filter, d) flowing the filtered blood through the first line portion of the venous blood line, e) flowing the filtered blood in the turbulence area of the infusion site to cause a turbulence in blood flow, f) infusing the solution for reestablishing ion balance through the secondary channel of the infusion site, and g) flowing the filtered blood mixed with the solution for reestablishing blood or plasma ion balance through the second portion of the blood line, wherein step f) is carried out directly before, during or directly after step e). - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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Specification