Multi-dose syringe driver
First Claim
Patent Images
1. A syringe driver device, adapted to engage and impart forces to a syringe to dispense fluid from within the syringe, comprising:
- a frame having proximal and distal ends;
a selectively positionable carriage element mounted upon the frame adjacent to the proximal end of the frame, the carriage element having proximal and distal ends and being in sliding engagement with the frame;
a syringe, removably mountable within the frame between the distal end of the frame and the distal end of the carriage element, the syringe including a fluid containing barrel with a flange at a proximal end thereof, an outlet tip at a distal end of the barrel and a moveable plunger, including a disk portion at a proximal end thereof and a tip portion at a distal end thereof, slidably disposed within the barrel for movement between withdrawn and fully inserted positions;
a force applying element, associated With the distal end of the carriage, the force applying element being adapted to engage and apply force to the plunger disk;
a spring element disposed substantially internally within the carriage and applying a biasing force to the force applying element;
cooperating locking elements associated with the carriage and the frame to secure the carriage to the frame among (i) an unlocked position, (ii) at least one locked, force applying position in which the force applying element is at least partially retracted within the carriage, and (iii) a locked, non-force applying position in which the force applying element is fully extended from the carriage element; and
a syringe securing means for engaging and maintaining the syringe within the frame.
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Abstract
A syringe driver device is able to effect the controlled, parenteral infusion of a medical fluid using an available disposable syringe. The driver device includes a frame heaving a movable carriage, which houses a force applying element, mounted thereto. A disposable syringe mounts upon the frame and a lengthy microbore tubing attaches to the outlet tip of the syringe. As a force is applied to the syringe plunger, fluid is expelled from the syringe, but its flow rate is dependent upon the diameter of the microbore tubing. The driver device enables the delivery of multiple, sequential doses of fluid.
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Citations
25 Claims
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1. A syringe driver device, adapted to engage and impart forces to a syringe to dispense fluid from within the syringe, comprising:
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a frame having proximal and distal ends; a selectively positionable carriage element mounted upon the frame adjacent to the proximal end of the frame, the carriage element having proximal and distal ends and being in sliding engagement with the frame; a syringe, removably mountable within the frame between the distal end of the frame and the distal end of the carriage element, the syringe including a fluid containing barrel with a flange at a proximal end thereof, an outlet tip at a distal end of the barrel and a moveable plunger, including a disk portion at a proximal end thereof and a tip portion at a distal end thereof, slidably disposed within the barrel for movement between withdrawn and fully inserted positions; a force applying element, associated With the distal end of the carriage, the force applying element being adapted to engage and apply force to the plunger disk; a spring element disposed substantially internally within the carriage and applying a biasing force to the force applying element; cooperating locking elements associated with the carriage and the frame to secure the carriage to the frame among (i) an unlocked position, (ii) at least one locked, force applying position in which the force applying element is at least partially retracted within the carriage, and (iii) a locked, non-force applying position in which the force applying element is fully extended from the carriage element; and a syringe securing means for engaging and maintaining the syringe 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, 23)
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24. A syringe driver device, adapted to engage and impart forces to a syringe to dispense fluid from within the syringe, comprising:
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a frame having proximal and distal ends; a selectively positionable carriage element, the carriage element being in sliding engagement with the frame and having proximal and distal ends with an aperture formed in the distal end thereof; a force applying element, extending distally from the aperture in the distal end of the carriage, the force applying element being biased to extend distally from the distal end of the carriage; a spring element disposed internally within the carriage element and applying a biasing force to the force applying element; cooperating locking elements associated with the carriage and the frame to secure the carriage to the frame at a desired location between the proximal and distal ends of the frame; and a syringe securing means for engaging and maintaining a syringe within the frame.
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25. A syringe driver system, adapted to engage and impart forces to a syringe to dispense fluid from within the syringe, comprising:
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a frame having proximal and distal ends; a selectively positionable carriage element, the carriage element having proximal and distal ends and being in sliding engagement with the frame; a syringe removably mountable within the frame between the distal end of the frame and the distal end of the carriage element, the syringe including a fluid containing barrel with a flange at a proximal end thereof, an outlet tip at a distal end of the barrel and a plunger slidably disposed within the barrel for movement between withdrawn and fully inserted positions; a force applying element associated with the distal end of the carriage, the force applying element being biased to extend from the distal end of the carriage and being adapted to selectively apply force to the plunger disk; a spring element disposed substantially internally within the carriage and applying a biasing force to the force applying element; cooperating locking elements associated with the carriage and the frame to secure the carriage to the frame; a syringe engaging means for engaging and maintaining the syringe within the frame; and a plurality of microbore tubing assemblies, each having a proximal and a distal end with a fluid passageway extending therebetween, the proximal end including an adapter mechanism to facilitate detachable coupling to the end of the syringe, and each microbore tubing assembly having a different fluid passageway inner diameter and an adapter mechanism external geometry and size specific to the inner diameter of the microbore tubing.
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Specification