Apparatus and kits for fluid infusion
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-11458256-B2
Publication Date
2022-10-04
Expiration Date
Abstract
An infusion device includes a housing with an interior chamber sized and configured to hold at least a flange and plunger of a syringe, a trigger held by the housing, and a lever in communication with the trigger and including an upwardly extending cam with a cam path having an upper end. The cam is in communication with the flange of the syringe. In response to actuation of the trigger to dispense fluid from the syringe, the upper end of the cam travels upward above the syringe and longitudinally toward a dispensing end of the syringe to linearly translate the plunger of the syringe in a first direction to dispense fluid from the syringe. To refill fluid into the syringe, the upper end of the cam travels downward and longitudinally away from the dispensing end of the syringe to linearly translate the plunger in a second direction to intake fluid.
Core Innovation
The invention provides an emergency infusion apparatus that includes a housing with a dispensing end and a grip, sized and configured to hold at least a flange of a body of a syringe and a plunger of the syringe with the syringe oriented with the plunger away from the dispensing end. A shuttle is mounted in the housing for reciprocal translational motion relative to the housing and engages the syringe plunger.
A lever is rotationally coupled to the housing at a pivot, with an upper portion defining a cam path and a pin of the shuttle disposed within the cam path. A trigger coupled to a lower portion of the lever is movable between a first position and a second position, and application of force on the trigger toward the grip that exceeds a predetermined force threshold prevents the lever from applying force to the shuttle that would cause a pressure of a fluid dispensed from the syringe to exceed a predetermined maximum pressure.
A bounded aperture is defined by the lower portion or first segment of the lever in a first configuration and is partially bounded by a separable segment that forms a portion of an outer surface of the lever. The separable segment is configured to break during transition from the first configuration to a second configuration so that the aperture transitions from being fully bounded by the lower portion or first segment to only partially bounded by the lower portion or first segment, including an arrangement in which a connector is disposed in the aperture in the first configuration and the second configuration.
Claims Coverage
The patent includes two independent claims, an apparatus in claim 1 and an apparatus in claim 16. Both claims combine a syringe-housing structure, a housing-mounted reciprocal shuttle driven by a lever/cam mechanism, a trigger-based safety control that limits dispensing pressure via a predetermined force threshold and predetermined maximum pressure, and a lever aperture/connector arrangement with a separable segment that breaks during a configuration transition.
Syringe-holding housing with dispensing end and grip
A housing having a dispensing end, an upper side, a lower side, and a grip extending from the lower side, sized and configured to hold at least a flange of a body of a syringe and a plunger of the syringe with the syringe oriented with the plunger away from the dispensing end of the housing.
Reciprocal shuttle engaging the syringe plunger
A shuttle mounted in the housing for reciprocal translational motion relative to the housing and configured to engage the plunger of the syringe, the shuttle including a pin.
Lever with cam path for translating shuttle motion
A lever rotationally coupled to the housing at a pivot, including an upper portion defining a cam path or an upwardly extending cam defining a non-linear cam path, such that the pin of the shuttle is disposed within the cam path.
Trigger-exceeding-force interlock to limit maximum dispensing pressure
A trigger coupled to the lower portion of the lever and movable between positions, where application of force on the trigger toward the grip that exceeds a predetermined force threshold prevents the lever from applying a force to the shuttle that causes a pressure of a fluid dispensed from the syringe to exceed a predetermined maximum pressure.
Breakable separable segment that changes bounded aperture and connector arrangement
A bounded aperture in the lever lower portion or first segment in a first configuration, partially bounded by a separable segment that forms a portion of an outer surface, where the separable segment is configured to break during transition to a second configuration so the aperture becomes only partially bounded by the lever, and where a connector is disposed in the aperture in the first configuration and the second configuration.
Both independent claims cover a syringe dispensing apparatus that uses a housing-mounted reciprocal shuttle guided by a lever cam path and a trigger with a predetermined force threshold that prevents shuttle actuation from generating fluid pressure above a predetermined maximum pressure. The claims also require a lever aperture/connector arrangement in a first configuration that includes a separable segment that breaks during transition to change how the aperture is bounded.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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