Rapid fluid delivery system
Inventors
Piehl, Mark D. • Robertson, Galen C. • Hagler, John Tyler Willis • Titkemeyer, Robert W. • Feiler, Jr., Frederic C.
Assignees
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Publication Number
US-11957886-B2
Publication Date
2024-04-16
Expiration Date
Abstract
A system includes a tubing set and a drive assembly. The tubing set includes inlet tubing couplable to a source of fluid, a valve coupled to the inlet tubing, a syringe coupled to the inlet tubing via the valve, and outlet tubing coupled to the valve. The valve is configured to allow fluid to be drawn from the source of fluid via the inlet tubing into a syringe body of the syringe and to be expelled from the syringe body and through the outlet tubing, and to prevent fluid from being drawn from the outlet tubing into the syringe body and to prevent fluid expelled from the syringe body from flowing through the inlet tubing. The drive assembly is configured to reversibly receive the tubing set such that a drive mechanism is engaged with a plunger of the syringe to reciprocally translate the plunger relative to the syringe body.
Core Innovation
The invention relates to a rapid medical fluid infusion system using a syringe-based delivery arrangement configured for high-resistance access such as intraosseous (IO) access and intravenous (IV) access. The system includes a tubing set with inlet tubing, a valve, and outlet tubing, and a syringe coupled to the inlet tubing via the valve such that fluid is drawn from a source into a syringe body and expelled from the syringe body through the outlet tubing. A drive assembly operably couples to a syringe plunger to reciprocally translate the plunger relative to the syringe body for rapid administration.
A key part of the system is valve-based prevention of reverse flow. The valve is configured to allow fluid to be drawn from the source of fluid via the inlet tubing into the syringe body and to be expelled through the outlet tubing, while preventing fluid from being drawn from the outlet tubing into the syringe body and preventing expelled fluid from flowing through the inlet tubing. The drive assembly is configured to releasably receive the tubing set such that the tubing set is disposed outside the housing, while an enclosure releasably couples to an outer surface of the housing to retain a portion of the valve inlet and the inlet tubing between the enclosure and the outer surface.
The system architecture further includes mechanical drive coupling and configurable drive options. A pinion engages with a rack fixedly coupled to the plunger, and in motorized embodiments a motor drives rotation of a drive mechanism to reciprocally translate the rack, causing the plunger to reciprocally translate relative to the syringe body along an axis parallel to a central axis of the rack. Additional features include enclosures and retention apertures that simultaneously receive the valve and syringe body, along with pressure monitoring, not-to-exceed pressure limits tied to access size, and overpressure disengagement mechanisms including breakable or resettable lever structures with optional pressure relief valves and override.
Claims Coverage
The partial content provides four independent claims (clm-00001, clm-00012, clm-00019, clm-00020). Across these independent claims, the claim coverage is grounded in a syringe-based tubing set with a valve that prevents reverse flow and a drive assembly that releasably receives the tubing set and reciprocally translates the syringe plunger via rack-and-pinion coupling, with enclosure-based retention of valve inlet and/or the syringe body during operation.
Valve configured for backflow prevention between inlet and outlet
A valve arrangement coupled between inlet tubing and outlet tubing, configured to allow fluid to be drawn from the source via the inlet tubing into the syringe body and to be expelled from the syringe body and through the outlet tubing, while preventing fluid from being drawn from the outlet tubing into the syringe body and preventing expelled fluid from flowing through the inlet tubing.
Releasably received tubing set outside a drive housing
A drive assembly including a housing that defines an interior and contains a drive mechanism at least partially disposed within the interior, configured to releasably receive the tubing set such that the tubing set is disposed outside of the housing, and configured to operably couple to the plunger to reciprocally translate the plunger relative to the syringe body.
Pinion-to-rack coupling that reciprocally translates the syringe plunger
A drive mechanism including a pinion configured to engage with a rack fixedly coupled to the plunger, where reciprocal translation of the rack causes the plunger to reciprocally translate relative to the syringe body.
Enclosure releasably coupled to retain valve inlet/inlet tubing portion
An enclosure releasably coupled to an outer surface of the housing such that the syringe body and the valve are disposed between the outer surface and the enclosure, where the enclosure defines an opening configured to receive a portion of at least one of the valve inlet and the inlet tubing such that the portion is retained between the enclosure and the outer surface.
Motor-driven rack translation along an axis parallel to the rack central axis
A system including a motor and a drive mechanism where the motor drives rotation to reciprocally translate a rack, causing reciprocal translation of the rack to reciprocally translate the plunger relative to the syringe body along an axis parallel to a central axis of the rack.
Enclosure apertures that simultaneously receive valve and syringe body by lateral displacement
An enclosure having a first receiving aperture configured to retain a portion of the valve and a second receiving aperture configured to retain a portion of the syringe body, with the valve and syringe body simultaneously received in the apertures via lateral displacement relative to the outer surface, where the plunger is operatively coupled to the drive mechanism via the lateral displacement.
Connecting portion fixed to and extending perpendicularly from an end of the rack
A rack coupled to the plunger via a connecting portion fixed to and extending perpendicularly from an end of the rack, with the drive mechanism coupled to the plunger via the rack so that motor-driven reciprocal translation of the rack causes plunger translation.
Across the independent claims, the core coverage combines: (i) a tubing set with inlet tubing, valve, and outlet tubing arranged to prevent reverse flow; (ii) a drive assembly with a housing that releasably receives the tubing set outside the housing; and (iii) a mechanical drive that reciprocally translates the syringe plunger using rack-and-pinion coupling, with additional claim scope on enclosure retention geometry and motor-driven rack translation along an axis parallel to the rack’s central axis.
Stated Advantages
Prevent fluid from being drawn from the outlet tubing into the syringe body and prevent fluid expelled from the syringe body from flowing through the inlet tubing.
Enable rapid fluid administration through reciprocally translating the plunger relative to the syringe body via the drive mechanism.
Retain portions of the valve inlet and/or inlet tubing between the enclosure and the outer surface of the housing.
Documented Applications
Rapid medical fluid infusion using a syringe-based delivery system for high-resistance access such as intraosseous (IO) access and intravenous (IV) access.
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