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Publication Number
US-12290673-B2
Publication Date
2025-05-06
Expiration Date
Abstract
Systems and methods are described herein relating to an intracardiac blood pump system comprising a pump, an elongate multi-lumen catheter, a compartment connected to the catheter, a first lumen, a conduit and a filter disposed within the conduit. At least one electronic element is located within the compartment. The conduit extends through an interface between the compartment and the catheter. The conduit is configured to allow gas to penetrate from a first end of the conduit through the first opening of the compartment to a second end of the conduit. The second end of the conduit is in fluid communication with a central lumen of the elongate multi-lumen catheter. The filter is configured to prevent egress of liquid from the multi-lumen catheter into the compartment after allowing flow of gas from the first end of the conduit through the second end of the conduit and into the multi-lumen catheter.
Core Innovation
The intracardiac blood pump system includes an elongate multi-lumen catheter defining at least one lumen and including a central lumen, together with a sealed compartment positioned adjacent a proximal end of the multi-lumen catheter. A conduit is positioned across an opening of the compartment, and sterilization gas is delivered through the conduit to penetrate the central lumen and sterilize the central lumen while the compartment remains sealed to protect electronic elements.
A self-sealing filter is positioned in the conduit across the compartment opening to prevent egress of liquid from the multi-lumen catheter into the compartment. The self-sealing filter is formed from a filter media coated with a hydrogel, is hydrogel-adhered to pore walls of a porous substrate, and is sized and shaped so that a filter cross section is equal to the lumen cross section.
The self-sealing filter includes liquid-impermeable, liquid-triggered self-sealing behavior and is gas-permeable prior to liquid exposure. The filter is sized and shaped to fit within the conduit and extend between the sealed compartment and a portion of the elongate catheter, and sterilization gas penetration is allowed prior to passing liquid through a lumen from an external source to a distal end.
Claims Coverage
The partial content contains two independent claims. The claimed coverage centers on hydrogel-coated self-sealing filter manufacturing and gas-based sterilization of a central lumen through a conduit across a sealed compartment opening, together with prevention of liquid egress into the compartment during subsequent liquid passage.
Hydrogel-coated self-sealing filter manufacturing with lumen cross-section matching
Coating a filter media with a hydrogel and assembling the coated filter media to form a self-sealing filter, sized and shaped to have a filter cross section equal to that of the lumen cross section.
Positioning self-sealing filter across sealed compartment opening and catheter segment
Positioning the self-sealing filter at a distal end of a sealed compartment and extending between the sealed compartment and a portion of the elongate catheter.
Sterilization gas delivery through a hollow tube through the sealed compartment
Delivering a sterilization gas to the elongate catheter via a hollow tube extending through at least a portion of the sealed compartment.
Sterilization gas penetration through conduit across compartment opening to sterilize central lumen
Allowing penetration of a sterilization gas through a first end of a conduit through a first opening of a compartment to a second end of the conduit to sterilize a central lumen of a multi-lumen catheter, where the conduit is positioned across the first opening of the compartment and the compartment is positioned adjacent a proximal end of the multi-lumen catheter.
Filter prevents liquid egress into compartment during liquid passage
Passing a liquid through a first lumen from an external source to a distal end of the multi-lumen catheter, while a filter prevents egress of the liquid from the multi-lumen catheter into the compartment.
Across the independent claims, the core claimed coverage couples gas-based sterilization of the central lumen through a conduit across a compartment opening with a self-sealing, hydrogel-based filter that prevents liquid egress into the sealed compartment during subsequent liquid passage.
Stated Advantages
Prevents egress of liquid from the multi-lumen catheter into the compartment.
Allows sterilization gas to penetrate the central lumen to sterilize the central lumen while maintaining the compartment protection of electronic elements.
Avoids electronic damage by preventing leaked liquid from entering the compartment.
Maintains sterility of the central lumen by sterilizing via sterilization gas penetration.
Documented Applications
Leak prevention and sterilization of an intracardiac blood pump system catheter, including sterilizing a central lumen via sterilization gas penetration and preventing liquid entry into a compartment during liquid passage.
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