Methods and devices for autoflush syringes
First Claim
1. A syringe for dispensing a first liquid, the syringe comprising:
- a first chamber having a moveable seal located therein such that movement of the moveable seal changes a volume of the first chamber, the first chamber having an outlet;
a second chamber movable in the first chamber along with the first chamber movable seal, the second chamber comprising a second movable seal located therein such that movement of the second moveable seal changes a volume of the second chamber;
a second liquid located in the second chamber, where a volume of the second liquid at least fills the second chamber; and
a conduit fluidly connecting the first chamber and the second chamber where the conduit contains a fluid gap that is adjacent to the second liquid, where the conduit is configured to retain the fluid gap when the second liquid fills at least the volume of the second chamber, the fluid gap maintains the second liquid in the second chamber;
where the fluid gap is retained in the conduit until the volume of the second chamber changes, such that while the volume of the second chamber remains unchanged volume of the first chamber can be altered by movement of the moveable seal without displacing the fluid gap.
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Accused Products
Abstract
Described herein are syringe devices, systems and methods. In general, the syringe may include a first chamber and a cartridge movable within the first chamber. The cartridge may include a cartridge chamber and a valve in fluid communication with the cartridge chamber and the first chamber and having an open configuration and a closed configuration. The valve may allow movement of a liquid out of the cartridge chamber while in a open configuration. The cartridge may also include a second end, movable within the cartridge chamber, and a locking mechanism having a locked configuration and an unlocked configuration, the locking mechanism preventing movement of the second end within the cartridge chamber while in the locked configuration.
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Citations
8 Claims
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1. A syringe for dispensing a first liquid, the syringe comprising:
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a first chamber having a moveable seal located therein such that movement of the moveable seal changes a volume of the first chamber, the first chamber having an outlet; a second chamber movable in the first chamber along with the first chamber movable seal, the second chamber comprising a second movable seal located therein such that movement of the second moveable seal changes a volume of the second chamber; a second liquid located in the second chamber, where a volume of the second liquid at least fills the second chamber; and a conduit fluidly connecting the first chamber and the second chamber where the conduit contains a fluid gap that is adjacent to the second liquid, where the conduit is configured to retain the fluid gap when the second liquid fills at least the volume of the second chamber, the fluid gap maintains the second liquid in the second chamber; where the fluid gap is retained in the conduit until the volume of the second chamber changes, such that while the volume of the second chamber remains unchanged volume of the first chamber can be altered by movement of the moveable seal without displacing the fluid gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification