Syringe systems and methods for multi-stage fluid delivery
Inventors
Assignees
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Publication Number
US-10463792-B2
Publication Date
2019-11-05
Expiration Date
Abstract
Embodiments of a syringe-based device for delivering fluid include a housing, a port, the port being positioned at about the distal end of the housing, a plunger assembly, the plunger assembly including, a plunger seal, a valve, and a cannula, a first fluid reservoir, where the first fluid reservoir retains a first type of fluid, a syringe including a syringe body, a syringe port, a plunger, and a second fluid reservoir, the second fluid retaining a second type of fluid, and where the syringe transitions from a first configuration in which a first portion of the first fluid type is delivered through the port, to a second configuration in which the second type of fluid in the second fluid reservoir is delivered through the port, to a third configuration in which a second portion of the first fluid type is delivered through the port.
Core Innovation
The invention provides a syringe-based method for delivering fluid using a housing with an open proximal end and a distal end defining an inner volume. The housing includes a seal configured to keep the inner volume sterile until the seal is removed, and a port positioned at about the distal end and configured to be coupled to a lumen-defining device for delivery of fluid to a patient. The housing further includes an abutment and a cylinder extending distally from the abutment, where the cylinder defines a lumen fluidically coupled with the port.
A plunger assembly is provided having a plunger seal positioned within the housing proximal to a first annular band, where the plunger seal defines a channel. A valve is a one-way check valve seated within at least a portion of the channel and includes a threaded proximal portion, and a cannula extends distally from the plunger seal where the cannula is monolithically formed with the plunger seal in a unitary, one-piece construction. A first fluid reservoir is defined at least partially by the housing, the abutment, and the plunger seal to retain a first amount of a first type of fluid, and a second fluid reservoir is defined at least partially by a syringe body and the plunger to retain a second amount of a second type of fluid.
An actuator mechanism is retained at least partially within the inner volume after the seal is removed and is movable relative to the housing. The actuator mechanism includes a syringe body with a syringe port fluidically coupleable to the threaded proximal portion of the valve, and a plunger moveable within the syringe body from a proximal position to a distal position. The method transitions the actuator mechanism between configurations so that a first portion of the first amount is delivered through the port, the second amount of the second type of fluid is delivered through the port, and then a second portion of the first amount is delivered through the port.
Claims Coverage
The partial content provides three independent claims. Each independent claim centers on a syringe-based method with a housing and distal port, a valve/cannula arrangement, first and second fluid reservoirs, and actuator-driven transitions delivering first fluid, then second fluid, then a remaining portion of the first fluid through the same port.
Sterile sealable housing with distal port and monolithic abutment/cylinder lumen
A housing having an open proximal end and a distal end defining an inner volume; a seal sized to close the open proximal end to keep the inner volume sterile until removed; and a port positioned at about the distal end configured to be coupled to a lumen-defining device for delivery of fluid to a patient. An abutment is monolithically formed with the housing in a unitary, one-piece construction, and a cylinder extending distally from the abutment to the distal end defines a lumen fluidically coupled with the port.
Plunger seal channel with one-way check valve and monolithically formed cannula
A plunger assembly including a plunger seal positioned within the housing proximal to a first annular band, where the plunger seal defines a channel. A one-way check valve is seated within at least a portion of the channel and has a threaded proximal portion, and a cannula extends distally from the plunger seal and is monolithically formed with the plunger seal in a unitary, one-piece construction.
First and second fluid reservoirs with actuator-driven configuration transitions
A first fluid reservoir defined at least partially by the housing, abutment, and plunger seal retaining a first amount of a first type of fluid, and a second fluid reservoir defined at least partially by the syringe body and the plunger retaining a second amount of a second type of fluid. An actuator mechanism retained at least partially within the inner volume after seal removal and movable relative to the housing transitions from a first configuration delivering a first portion of the first amount through the port, to a second configuration delivering the second amount through the port, and then to a third configuration delivering a second portion of the first amount through the port.
Across the independent claims, the inventive subject matter is directed to a syringe-based delivery method that uses a sealable housing with a distal port, a valve/cannula arrangement coupled to a plunger seal channel, dual reservoirs, and actuator mechanism transitions that deliver first fluid, then second fluid, and then a remaining portion of the first fluid through the same port.
Stated Advantages
Documented Applications
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