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Publication Number
US-12465673-B2
Publication Date
2025-11-11
Expiration Date
Abstract
A method includes, after an extracorporeal blood treatment, connecting a fluid source to an access line that is connected to a patient, and delivering a fluid from the fluid source to the access line to infuse blood from the access line to the patient, wherein the fluid delivered to the access line has a temperature from about 30 degrees Celsius to about 38 degrees Celsius.
Core Innovation
The invention relates to an extracorporeal blood treatment system that includes a syringe and an extracorporeal blood treatment apparatus having a warming chamber. The warming chamber is configured to receive the syringe and heat the fluid contained in the syringe. The system further includes a blood component set configured to be coupled to the extracorporeal blood treatment apparatus and conveying fluid from a patient, through a dialyzer, and back to the patient during extracorporeal blood treatment, and includes an access line.
After the extracorporeal blood treatment, the syringe is configured to be coupled to the access line to deliver the fluid from the syringe into the access line. This delivers the heated fluid for infusing blood to the patient following the extracorporeal blood treatment. The warming chamber includes insulation and a door configured for heating with an activated radiative infrared or photonic heating element positioned near the syringe, and temperature sensors are provided with monitoring to maintain a target temperature range.
The system can use correlation or an algorithm to maintain the temperature of the syringe fluid. Alternative embodiments include heating where heat radiated from dialyzer-related fluid and/or warm dialysate inlet/outlet lines heats the syringe with less energy, or configurations where warm substitution fluid from a dialysate circuit can be used for flushing without a separate warmer.
Claims Coverage
The independent claim is clm-00001. It covers 8 inventive features, centered on a syringe-receiving warming chamber integrated into an extracorporeal blood treatment system, where the warmed syringe fluid is coupled to the access line to infuse blood following dialyzer treatment.
Syringe coupled to access line after extracorporeal treatment
The syringe is configured to be coupled to the access line following the extracorporeal blood treatment to deliver the fluid from the syringe into the access line to infuse blood to the patient following the extracorporeal blood treatment.
Warming chamber heating fluid contained in syringe
An extracorporeal blood treatment apparatus comprises a warming chamber configured to receive the syringe and to heat the fluid contained in the syringe.
Dialyzer-based blood component set with access line
A blood component set configured to be coupled to the extracorporeal blood treatment apparatus conveys fluid from a patient, through a dialyzer, and back to the patient during extracorporeal blood treatment, the blood component set comprising an access line.
Infrared heating element for the warming chamber
A heating element for the warming chamber is an infrared heater.
Temperature sensors monitoring warming chamber temperature
The warming chamber includes one or more temperature sensors configured to measure the temperature inside the warming chamber.
Dialysate line supplying dialyzer
A fluid line set contains a dialysate line configured to supply dialysate to a dialyzer of an extracorporeal blood treatment system.
Syringe filled with substitution fluid from substitution line
A syringe is connected to a substitution line of an extracorporeal blood treatment apparatus and is filled with substitution fluid from that line.
Actuatable plunger drawing saline from saline line
A syringe includes a plunger that can be actuated to draw saline from the saline line into the syringe.
Across the claim set, the main inventive coverage is the integration of a syringe warmed in a warming chamber and then coupled to an access line after extracorporeal dialyzer treatment to infuse the patient. Refinements cover specific heating element types, sensor-based monitoring, and particular sourcing of syringe fluid from saline or substitution lines.
Stated Advantages
Documented Applications
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