Syringe systems and methods for multi-stage fluid delivery
Inventors
Assignees
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Publication Number
US-10369285-B2
Publication Date
2019-08-06
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
Both independent claims are directed to a syringe-based delivery method that delivers a first fluid as a first portion and a second portion with delivery of a second type of fluid between the two portions. The claims describe first and second fluid reservoirs and sequential multi-fluid delivery.
The device includes a housing defining an inner volume, a plunger assembly movable relative to the housing, an actuator mechanism selectively attachable to the plunger assembly, and a syringe body that cooperates to define a second fluid reservoir. A locking mechanism selectively couples the plunger assembly and the housing.
In one version, the housing has a port positioned at a distal end, the plunger assembly includes a plunger seal and a valve, and the actuator mechanism is retained at least partially within the inner volume and is coupled to the valve. The claims differ in device specifics, including selective attachment to a housing-retained plunger assembly and delivery through a distal port with a valve-coupled actuator.
Claims Coverage
The partial content includes two independent claims (clm-00001 and clm-00010), each covering a syringe-based delivery method with selective coupling and sequential multi-fluid delivery. Across the independent claims, the main inventive features are the device structure that defines first and second fluid reservoirs and the method steps that deliver a first fluid in two portions separated by delivery of a second type of fluid.
First and second fluid reservoirs with two first-fluid portions separated by second fluid
A syringe-based method that delivers a first portion of a first amount in a first fluid reservoir, delivers a second amount of a second type of fluid in a second fluid reservoir, and then delivers a second portion of the first amount in the first fluid reservoir.
Housing-retained plunger assembly with selectively attachable actuator mechanism and locking coupling
Providing a syringe-based device with a housing defining an inner volume and a first fluid reservoir defined at least partially by the housing and plunger assembly, an actuator mechanism selectively attachable to the plunger assembly and movable relative to the housing, the actuator mechanism including a syringe body that cooperates to define a second fluid reservoir, and a locking mechanism configured to selectively couple the plunger assembly and the housing.
Distal port fluid delivery through housing with valve-coupled actuator and plunger-seal locking
Providing a syringe-based device with a housing having a port positioned at a distal end, a plunger assembly moveable relative to the housing and including a plunger seal and a valve, a first fluid reservoir defined at least partially by the housing and the plunger seal, an actuator mechanism retained at least partially within the inner volume and movable relative to the housing including a syringe body configured to be coupled to the valve, a second fluid reservoir defined at least partially by the syringe body and the plunger, and a locking mechanism to selectively couple the plunger seal and the housing.
Both independent claims are directed to delivering a first fluid as a first portion and a second portion with delivery of a second fluid type between the two portions. The claims differ in device specifics, including whether an actuator mechanism is selectively attachable to a housing-retained plunger assembly and whether delivery is through a distal port with a valve-coupled actuator.
Stated Advantages
Documented Applications
No documented applications found
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