Collapsible syringe for fluid delivery system
First Claim
1. A collapsible syringe for a fluid delivery system, the collapsible syringe comprising:
- a distal end having a discharge port;
a proximal end portion having a closed end wall configured for engagement with a piston element of an injector; and
a compressible or deformable sidewall between the distal end and the proximal end portion,wherein the sidewall is sufficiently rigid to be self-supporting when placed on end and pliable enough to permit the closed end wall to invert into an interior of the collapsible syringe so that the sidewall folds inward against itself when an axial force is applied to the closed end wall,wherein the proximal end portion has a receiving end pocket configured for receiving a piston head of the piston element, andwherein the receiving end pocket has at least one internal structure configured for engaging at least one retractable retaining pin on the piston head.
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Accused Products
Abstract
A collapsible syringe assembly for a fluid delivery system is a multi-component device that includes a cylindrical pressure jacket and a collapsible syringe that is received within the pressure jacket. The collapsible syringe includes a cap member and a compressible or deformable sidewall member. The collapsible syringe in one embodiment is adapted to be secured to the pressure jacket by the cap member. The cap member is formed with a discharge port, which may be formed as conventional luer fitting. The discharge port is disposed coaxially within an annular wall on the outward facing side of the cap member and may be recessed within the annular wall.
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Citations
12 Claims
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1. A collapsible syringe for a fluid delivery system, the collapsible syringe comprising:
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a distal end having a discharge port; a proximal end portion having a closed end wall configured for engagement with a piston element of an injector; and a compressible or deformable sidewall between the distal end and the proximal end portion, wherein the sidewall is sufficiently rigid to be self-supporting when placed on end and pliable enough to permit the closed end wall to invert into an interior of the collapsible syringe so that the sidewall folds inward against itself when an axial force is applied to the closed end wall, wherein the proximal end portion has a receiving end pocket configured for receiving a piston head of the piston element, and wherein the receiving end pocket has at least one internal structure configured for engaging at least one retractable retaining pin on the piston head. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification