Joint for fluid transport lines for medical use
First Claim
1. A circuit for extracorporeal treatment of blood, comprising:
- at least one blood withdrawal line configured to supply blood removed from a patient to at least a first chamber of a blood treatment device;
at least one blood return line configured to return the blood to the patient after the blood exits said first chamber of the blood treatment device; and
at least one drainage line for draining a discharge fluid, said discharge fluid exiting a second chamber of the blood treatment device, said second chamber being separated from said first chamber by a semi-permeable membrane, said drainage line comprising at least a first part, and a second part, said first and second parts being configured to contact the discharge fluid, said second part including a material having an electrical conductivity greater than an electrical conductivity of a material forming said first part, said second part being configured to provide a galvanic connection with an element external to the drainage line, said second part comprises a joint having a tubular body with a first end having a first connecting zone and a second end having a second connecting zone, said first and second ends being opposite one another, said tubular body including an electrically conductive material, said first part including a first tubular element and a second tubular element, said first and second tubular elements being coupled to said tubular body at said first and second connecting zones, said joint comprises at least one internal surface configured to contact the discharge fluid, and at least one external surface configured to electrically contact an element, said element being external to the drainage line, in order to dissipate any electric charges present in the discharge fluid, the joint further having an electrical resistance between said internal surface and said external surface, said electrical resistance being comprised between 40 KΩ and
10 MΩ
.
4 Assignments
0 Petitions
Accused Products
Abstract
The joint (36) comprises a tubular body (37) having two connecting zones (38, 39) each connected by an end to a tubular element (40) of a fluid transport line, giving continuity to passage of fluid. The tubular body is made of a mixture of an electrically-conductive material such as PVC, with carbon black to give it electrical conductivity. The joint has an internal surface (41) which is destined to come into contact with the transported fluid, and an external surface which is destined to have a grounded galvanic contact. The joint is inserted in the discharge fluid drainage line of a dialyzer filter, in an apparatus for intensive treatment of acute renal insufficiency, for eliminating ECG artefacts due to functioning of peristaltic pumps in the apparatus.
72 Citations
21 Claims
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1. A circuit for extracorporeal treatment of blood, comprising:
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at least one blood withdrawal line configured to supply blood removed from a patient to at least a first chamber of a blood treatment device; at least one blood return line configured to return the blood to the patient after the blood exits said first chamber of the blood treatment device; and at least one drainage line for draining a discharge fluid, said discharge fluid exiting a second chamber of the blood treatment device, said second chamber being separated from said first chamber by a semi-permeable membrane, said drainage line comprising at least a first part, and a second part, said first and second parts being configured to contact the discharge fluid, said second part including a material having an electrical conductivity greater than an electrical conductivity of a material forming said first part, said second part being configured to provide a galvanic connection with an element external to the drainage line, said second part comprises a joint having a tubular body with a first end having a first connecting zone and a second end having a second connecting zone, said first and second ends being opposite one another, said tubular body including an electrically conductive material, said first part including a first tubular element and a second tubular element, said first and second tubular elements being coupled to said tubular body at said first and second connecting zones, said joint comprises at least one internal surface configured to contact the discharge fluid, and at least one external surface configured to electrically contact an element, said element being external to the drainage line, in order to dissipate any electric charges present in the discharge fluid, the joint further having an electrical resistance between said internal surface and said external surface, said electrical resistance being comprised between 40 KΩ and
10 MΩ
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A circuit for extracorporeal treatment of blood, comprising:
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at least one blood withdrawal line configured to supply blood removed from a patient to at least a first chamber of a blood treatment device; at least one blood return line configured to return the blood to the patient after the blood exits said first chamber of the blood treatment device; and at least one drainage line for draining a discharge fluid, said discharge fluid exiting a second chamber of the blood treatment device, said second chamber being separated from said first chamber by a semi-permeable membrane, said drainage line comprising at least a first part and a second part, said first and second parts being configured to contact the discharge fluid, said second part including a material having an electrical conductivity greater than an electrical conductivity of a material forming said first part, said second part being configured to provide a galvanic connection with an element external to the drainage line, said second part comprises a joint having a tubular body with a first end having a first connecting zone and a second end having a second connecting zone, said first and second ends being opposite one another, said tubular body including an electrically conductive material, said first part including a first tubular element and a second tubular element, said first and second tubular elements being coupled to said tubular body at said first and second connecting zones, said tubular body comprising at least one first axial stop element, said at least one first axial stop element being operatively coupled to an end zone of a first tubular element, for limiting an axial insertion of said first tabular element inside said tubular body. - View Dependent Claims (15, 16)
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17. A circuit of for extracorporeal treatment of blood, comprising:
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at least one blood withdrawal line configured to supply blood removed from a patient to at least a first chamber of a blood treatment device; at least one blood return line configured to return the blood to the patient after the blood exits said first chamber of the blood treatment device; and at least one drainage line for draining a discharge fluid, said discharge fluid exiting a second chamber of the blood treatment device, said second chamber being separated from said first chamber by a semi-permeable membrane, said drainage line comprising at least a first part and a second part, said first and second parts being configured to contact the discharge fluid, said second part including a material having an electrical conductivity greater than an electrical conductivity of a material forming said first part, said second part being configured to provide a galvanic connection with an element external to the drainage line, said second part comprises a joint having a tubular body with a first end having a first connecting zone and a second end having a second connecting zone, said first and second ends being opposite one another, said tubular body including an electrically conductive material, said first part including a first tubular element and a second tubular element, said first and second tubular elements being coupled to said tubular body at said first and second connecting zones, said tubular body having a free intermediate zone not used for connecting, said free intermediate zone being axially disposed between said first and second connecting zones and configured to contact the discharge fluid. - View Dependent Claims (18)
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19. A circuit for extracorporeal treatment of blood, comprising:
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at least one blood withdrawal line configured to supply blood removed from a patient to at least a first chamber of a blood treatment device; at least one blood return line configured to return the blood to the patient after the blood exits said first chamber of the blood treatment device; and at least one drainage line for draining a discharge fluid, said discharge fluid exiting a second chamber of the blood treatment device, said second chamber being separated from said first chamber by a semi-permeable membrane, said drainage line comprising at least a first part and a second part, said first and second parts being configured to contact the discharge fluid, said second part including a material having an electrical conductivity greater than an electrical conductivity of a material forming said first part, said second part being configured to provide a galvanic connection with an element external to the drainage line, said second part comprises a joint having a tubular body with a first end having a first connecting zone and a second end having a second connecting zone, said first and second ends being opposite one another, said tubular body including an electrically conductive material, said first part including a first tubular element and a second tubular element, said first and second tubular elements being coupled to said tubular body at said first and second connecting zones, said tubular body being a single piece.
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20. A circuit for extracorporeal treatment of blood, comprising:
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at least one blood withdrawal line configured to supply blood removed from a patient to at least a first chamber of a blood treatment device; at least one blood return line configured to return the blood to the patient after the blood exits said first chamber of the blood treatment device; and at least one drainage line for draining a discharge fluid, said discharge fluid exiting a second chamber of the blood treatment device, said second chamber being separated from said first chamber by a semi-permeable membrane, said drainage line comprising at least a first part and a second part, said first and second parts being configured to contact the discharge fluid, said second part including a material having an electrical conductivity greater than an electrical conductivity of a material forming said first part, said second part being configured to provide a galvanic connection with an element external to the drainage line, said second part comprises a joint having a tubular body with a first end having a first connecting zone and a second end having a second connecting zone, said first and second ends being opposite one another, said tubular body including an electrically conductive material, said first part including a first tubular element and a second tubular element, said first and second tubular elements being coupled to said tubular body at said first and second connecting zones, said first and second tubular elements including first and second end zones, said first and second end zones being inserted inside said tubular body, said tubular body comprising an axial intermediate zone provided between said first and second connecting zones, wherein said axial intermediate zone is not covered by said first and second end zones of said first and second tubular elements, said axial intermediate zone being configured to contact the discharge fluid. - View Dependent Claims (21)
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Specification