Front-loading medical injector and syringe for use therewith
First Claim
1. A syringe use with an injector, the syringe comprising:
- a cylindrical main body comprising a rearward end and a forward end defining a fluid discharge opening;
a plunger movably disposed in the cylindrical main body;
two retaining flanges on the rearward end of the cylindrical main body for mounting the syringe in a desired position relative to the injector, the two retaining flanges being positioned in substantially opposed relationship to one another; and
a projecting flange on the cylindrical main body spaced in a direction forward from the two retaining flanges, the projecting flange being cooperable with the two retaining flanges for mounting the syringe on the injector with an interference fit.
1 Assignment
0 Petitions
Accused Products
Abstract
A front-loading syringe which comprises a movable plunger for injecting liquid contrast media, is rotatably mountable on a front wall of an injector housing with an interference fit and in sealed relationship with respect thereto, with or without a pressure jacket, by a first-quick release mechanism. At the same time, the plunger is connected to an injector drive mechanism by a second readily releasable mechanism. During the mounting operation, a sensor reads injection information from an indicator device on the syringe and feeds it to an injector control. An audible-and-tactile indicating mechanism also is activated when the syringe is essentially in the desired mounted position. The syringe may include reinforcing ribs which also function as volumetric gradations, and liquid media presence-or-absence indicating dots which appear circular against a liquid media background and oval-shaped against an air background. An injection end of the syringe comprises an injector portion of reduced diameter inside a screw-threaded attachment portion of larger diameter, and may include loop-shaped reinforcing handle portions.
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Citations
37 Claims
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1. A syringe use with an injector, the syringe comprising:
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a cylindrical main body comprising a rearward end and a forward end defining a fluid discharge opening;
a plunger movably disposed in the cylindrical main body;
two retaining flanges on the rearward end of the cylindrical main body for mounting the syringe in a desired position relative to the injector, the two retaining flanges being positioned in substantially opposed relationship to one another; and
a projecting flange on the cylindrical main body spaced in a direction forward from the two retaining flanges, the projecting flange being cooperable with the two retaining flanges for mounting the syringe on the injector with an interference fit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A syringe use with an injector, the syringe comprising:
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a cylindrical main body comprising a rearward end and a forward end defining a fluid discharge opening;
a plunger movably disposed in the cylindrical main body;
at least one retaining flange on the rearward end of the cylindrical main body for mounting the syringe in a desired position relative to the injector;
a projecting flange on the cylindrical main body spaced in a direction forward from the at least one retaining flange, the projecting flange being cooperable with the at least one retaining flange for mounting the svringe on the injector with an interference fit; and
an encoding device for providing syringe information to the injector. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A syringe use with an injector, the syringe comprising:
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a cylindrical main body comprising a rearward end and a forward end defining a fluid discharge opening;
a plunger movably disposed in the cylindrical main body, the plunger comprising two book members extending rearward therefrom;
two retaining flanges on the rearward end of the cylindrical main body for mounting the syringe in a desired position relative to the injector;
a projecting flange on the cylindrical main body spaced in a direction forward from the two retaining flanges, the projecting flange being cooperable with the two retaining flanges for mounting the syringe on the injector with an interference fit; and
an encoding device for providing syringe information to the injector. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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Specification