Prefilled syringe for use with power injector
First Claim
1. A plastic syringe comprising:
- a cylindrical barrel for receiving a liquid, said barrel having a distal end and a proximal end;
a plunger axially reciprocable within said barrel for discharging the liquid therefrom;
a discharge extension at the distal end of said barrel terminating in a discharge outlet;
at least one radially outwardly extending mounting lug located at or near an outer portion of the proximal end of said barrel, said lug having a distal surface having first and second ends defining a constrained portion of said barrel, and said lug being crowned shaped such that the center of the distal surface of said lug is distally offset from the ends of the distal surface of said lug in a direction extending towards the distal end of said barrel.
4 Assignments
0 Petitions
Accused Products
Abstract
A plastic syringe adapted for use with power injector systems comprises a cylindrical barrel for receiving a liquid, a plunger axially reciprocable within the barrel for discharging the liquid therefrom, a discharge extension at the distal end of the barrel terminating in a discharge outlet, at least one radially outwardly extending mounting lug located at or near the outer proximal end of the barrel, the lug having a distal surface having first and second ends defining a constrained portion of the barrel, and the lug being crown shaped such that the center of the distal surface of the lug is distally offset from the ends of the lug. In another embodiment, the syringe comprises a cylindrical collar adapted to fit over and attach to the proximal end of the cylindrical barrel, and the crowned lug is located at or near the outer proximal end of the collar. The crowned lug reduces stresses on the lug during injection, thus providing improved reliability and enabling the syringe to be fabricated of lower modulus autoclavable plastics.
185 Citations
12 Claims
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1. A plastic syringe comprising:
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a cylindrical barrel for receiving a liquid, said barrel having a distal end and a proximal end; a plunger axially reciprocable within said barrel for discharging the liquid therefrom; a discharge extension at the distal end of said barrel terminating in a discharge outlet; at least one radially outwardly extending mounting lug located at or near an outer portion of the proximal end of said barrel, said lug having a distal surface having first and second ends defining a constrained portion of said barrel, and said lug being crowned shaped such that the center of the distal surface of said lug is distally offset from the ends of the distal surface of said lug in a direction extending towards the distal end of said barrel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A plastic syringe comprising:
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a cylindrical barrel for receiving a liquid, said barrel having a distal end and a proximal end; a plunger axially reciprocable within said barrel for discharging liquid therefrom; a discharge extension at the distal end of said barrel terminating in a discharge outlet; a cylindrical collar having a distal end and a proximal end, said collar being adapted to fit over and attach to the proximal end of said cylindrical barrel; at least one radially outwardly extending mounting lug located at or near an outer portion of the proximal end of said collar, said lug having a distal surface having first and second ends defining a constrained portion of said collar; and
said lug being crown shaped such that the center of the distal surface of said lug is distally offset from the ends of the distal surface of said lug in a direction extending towards the distal end of said barrel. - View Dependent Claims (12)
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Specification