Infusion site for improved mixing of fluids
First Claim
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1. A blood line for extracorporeal blood or plasma treatment comprising:
- a first line portion intended to be connected to an outlet of a filter, the first line portion having a first line passage section,a second line portion intended to be connected to a patient'"'"'s vascular access, the second line portion having a second line passage section,a post-infusion line portion for a solution at least partially reestablishing blood ion balance, the post-infusion line portion having a post-infusion line passage section,an infusion site acting between the first line portion and the second line portion, and intended to inject into the blood line a solution reestablishing blood or plasma ion balance, 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,means for formation of a turbulence area located downstream from and in fluid communication with the first main channel, located upstream from and in fluid communication with the second main channel, the means for formation of a turbulence area comprising a first fluid passage means defining a reduction in a passage section and whose smallest passage section is smaller than the first passage section and smaller than the second passage section, wherein the first fluid passage of the turbulence area formation means defines a continuous narrowing of internal section in the direction of fluid passage,a secondary channel in fluid communication with the post-infusion line portion, the secondary channel comprising an inlet for letting in a solution reestablishing ion balance and an outlet in fluid communication with at least one of three elements chosen among the first main channel, the means for formation of a turbulence area and the second main channel, whereinthe longitudinal axis of the secondary channel of the infusion site is perpendicular to the longitudinal axis of the second main channel of the infusion site,the post-infusion line portion is coupled internally of the secondary channel, an outer surface of the post-infusion line portion being sealingly connected to an inner surface of the post-infusion line passage section,the turbulence area formation means includes a second fluid passage means downstream from the first fluid passage means defining an increase in fluid passage section, andthe largest fluid passage section of the second fluid passage means is smaller than said first passage section and smaller than said second passage section.
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Accused Products
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.
13 Citations
28 Claims
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1. A blood line for extracorporeal blood or plasma treatment comprising:
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a first line portion intended to be connected to an outlet of a filter, the first line portion having a first line passage section, a second line portion intended to be connected to a patient'"'"'s vascular access, the second line portion having a second line passage section, a post-infusion line portion for a solution at least partially reestablishing blood ion balance, the post-infusion line portion having a post-infusion line passage section, an infusion site acting between the first line portion and the second line portion, and intended to inject into the blood line a solution reestablishing blood or plasma ion balance, 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, means for formation of a turbulence area located downstream from and in fluid communication with the first main channel, located upstream from and in fluid communication with the second main channel, the means for formation of a turbulence area comprising a first fluid passage means defining a reduction in a passage section and whose smallest passage section is smaller than the first passage section and smaller than the second passage section, wherein the first fluid passage of the turbulence area formation means defines a continuous narrowing of internal section in the direction of fluid passage, a secondary channel in fluid communication with the post-infusion line portion, the secondary channel comprising an inlet for letting in a solution reestablishing ion balance and an outlet in fluid communication with at least one of three elements chosen among the first main channel, the means for formation of a turbulence area and the second main channel, wherein the longitudinal axis of the secondary channel of the infusion site is perpendicular to the longitudinal axis of the second main channel of the infusion site, the post-infusion line portion is coupled internally of the secondary channel, an outer surface of the post-infusion line portion being sealingly connected to an inner surface of the post-infusion line passage section, the turbulence area formation means includes a second fluid passage means downstream from the first fluid passage means defining an increase in fluid passage section, and the largest fluid passage section of the second fluid passage means is smaller than said first passage section and smaller than said second passage section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification
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Current AssigneeGambro Lundia AB (Baxter International Inc.)
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Original AssigneeGambro Lundia AB (Baxter International Inc.)
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InventorsFrugier, Alain, Pouchoulin, Dominique
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Primary Examiner(s)Zalukaeva, Tatyana
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Assistant Examiner(s)Mensh, Andrew J
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Application NumberUS14/262,413Publication NumberTime in Patent Office1,313 DaysField of Search604 616, 604 607, 604 604, 96209US Class CurrentCPC Class CodesA61M 1/024 Means for controlling the q...A61M 1/34 Filtering material out of t...A61M 1/3413 DiafiltrationA61M 1/342 Adding solutions to the blo...A61M 1/3431 upstream of the filterA61M 1/3434 with pre-dilution and post-...A61M 1/3437 downstream of the filter, e...A61M 1/3458 having electrolytes not pre...A61M 1/3627 Degassing devices; Buffer r...A61M 1/3653 Interfaces between patient ...A61M 1/3659 Cannulae pertaining to extr...A61M 1/3672 Means preventing coagulationA61M 1/3675 DeactivationA61M 2025/0031 characterized by lumina for...A61M 2202/0021 removed from and reintroduc...A61M 2202/0042 filtrate, i.e. the fluid pa...A61M 2206/16 Rotating swirling helical f...A61M 25/0074 Dynamic characteristics of ...
