Single-dose syringe driver
First Claim
1. A syringe driver, comprising:
- a frame adapted to seat a syringe;
a driver slidably disposed within the frame and adapted to seat a plunger of a syringe;
a puller slidably disposed within the frame and having a latch formed thereon and adapted tomate to an engagement element on the frame; and
a force-delivery element coupled to and extending between the driver and the puller, the force-delivering element mating to the driver at a location adjacent to a proximal end of a plunger of the syringe, the force delivery element pressing against the frame to create a frictional force between the puller and the frame sufficient to prevent siphoning of the syringe;
wherein the puller is movable between a first position, in which the force-delivery element is in a resting position, and a second position, in which the latch on the puller mates to the engagement element on the frame to expand the force-delivery element thereby causing the force-delivery element to pull the driver and drive the plunger into a barrel of a syringe seated within the frame.
1 Assignment
0 Petitions
Accused Products
Abstract
Various methods and devices for driving fluid from a syringe are provided. In one exemplary embodiment, a syringe driver is provided having a frame that is adapted to seat a syringe, a driver that is slidably disposed within the frame and that is adapted to seat a plunger of a syringe, and a puller that is slidably disposed within the frame and that has a latch formed thereon for mating to an engagement element on the frame. The device can also include a force-delivery element, such as a constant force spring, that is coupled to and extends between the driver and the puller. In use, the puller is movable between a first position, in which the force-delivery element is in a resting position, and a second position, in which the latch on the puller mates to the engagement element on the frame to expand the force-delivery element thereby causing the force-delivery element to pull the driver and drive a plunger into a barrel of a syringe seated within the frame to deliver fluid from the syringe to a patient at a constant rate.
44 Citations
47 Claims
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1. A syringe driver, comprising:
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a frame adapted to seat a syringe; a driver slidably disposed within the frame and adapted to seat a plunger of a syringe; a puller slidably disposed within the frame and having a latch formed thereon and adapted to mate to an engagement element on the frame; and a force-delivery element coupled to and extending between the driver and the puller, the force-delivering element mating to the driver at a location adjacent to a proximal end of a plunger of the syringe, the force delivery element pressing against the frame to create a frictional force between the puller and the frame sufficient to prevent siphoning of the syringe; wherein the puller is movable between a first position, in which the force-delivery element is in a resting position, and a second position, in which the latch on the puller mates to the engagement element on the frame to expand the force-delivery element thereby causing the force-delivery element to pull the driver and drive the plunger into a barrel of a syringe seated within the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system for driving fluid, comprising:
- a syringe comprising a barrel and a plunger slidably disposed in the barrel;
a frame having proximal and distal ends, the distal end of the frame being adapted to couple to a distal end of the barrel of the syringe; a driver slidably disposed within the frame and having a cavity formed therein that retains a proximal end of the plunger for preventing movement of the plunger independently of the driver; and a puller slidably disposed within the frame and movable between a first position, in which a proximal end of the puller is positioned adjacent to the driver and the proximal end of the plunger and a force is applied to the puller by the driver to prevent siphoning of the syringe, and a second position, in which the puller is coupled to a distal end of the frame and a force is applied to the driver to move the driver distally and thereby force the plunger into the barrel of the syringe. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- a syringe comprising a barrel and a plunger slidably disposed in the barrel;
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36. A method for driving fluid, comprising:
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engaging a syringe between a driver slidably positioned within a frame and a connecting element formed on a distal end of the frame; and sliding the puller toward a distal end of the frame to mate the puller to the frame, the puller actuating the force-delivery element coupled at a first end to the puller and at a second end to the driver at a location adjacent to a proximal end of a plunger of the syringe; whereby the force-delivery element pulls the driver distally to drive the plunger into a barrel of the syringe and thereby drive fluid out of the syringe, wherein, prior to sliding the puller, a combination of at least two of the force delivery element, the driver, and the puller prevents siphoning of the syringe. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification