Abstract: An adapter includes a syringe carrier adapted to seat at least a portion of the syringe. The syringe carrier includes at least one rearward facing abutmer member to abut at least one forward facing surface on a syringe. The syringe carrie includes an opening therein to allow a drive member of an injector to communicate forward force to the plunger through abutment without connective engagement between the drive member and the plunger. The adapter further includes a releasable mounting mechanism positioned to the rear of the syringe carrier to mount the adapter in a desired position relative to the front wall of the injector. An adapter includes a first section and a second section that are rotatable relative to each other about a hinge axis generally perpendicular to a longitudinal axis of the adapter.
Type:
Grant
Filed:
August 8, 2000
Date of Patent:
April 27, 2004
Assignee:
Medrad, Inc.
Inventors:
James Albert Dedig, Thomas P. Joyce, Michael A. Spohn, John A. Haury, Gregory J. O'Donnell
Abstract: An injector for use in injecting a fluid in a medical injection procedure includes a drive mechanism to pressurize the fluid; a sensor to measure a variable that is proportional to fluid pressure (that is, a direct or indirect measurement of fluid pressure); and a pressure monitor (for example, including hardwired circuitry and/or software) in communication with the sensor and the drive mechanism to stop the injection procedure when the sensor measures a value of the variable that corresponds to a pressure hazard limit. Preferably, the pressure monitor further limits power input to the drive mechanism to a power limit once the variable reaches a value that corresponds to a power limiting pressure that is below the pressure hazard limit.
Type:
Grant
Filed:
November 22, 2000
Date of Patent:
January 6, 2004
Assignee:
Medrad, Inc.
Inventors:
Francis J. Sciulli, David M. Griffiths, William J. Nolan, Jr., Richard G. Critchlow, Salvatore J. Dedola, Michael A. Spohn, Frank A. Lazzaro, Thomas P. Joyce, John R. Gardner
Abstract: A mounting member for attaching a front-loading syringe to a powered injector is disclosed. The present invention may also include a plunger that has a two-piece molded core portion that is readily attachable to a plunger drive member of a powered injector. The plunger core may also be equipped with an anti-cocking flange to prevent the plunger from being axially misaligned within the syringe body which could result in fluid leakage between the plunger and the syringe body. An alignment flange may also be provided on the plunger to assist with the proper insertion of the plunger into the syringe during the assembly process. A method of manufacturing a syringe plunger is also disclosed. The present invention further includes a sleeve for clampingly engaging a heating blanket to the outer surface of a syringe.
Abstract: The present invention provides an injection system and a pump system for use therein for pressurizing a liquid medium for injection into a patient. In general, the pump system comprises a pressurizing unit having at least one chamber. Each chamber has disposed therein a pressurizing mechanism to pressurize liquid medium within the chamber. Preferably, the pressurizing mechanism positively displaces the liquid medium through generally linear motion of the pressurizing mechanism within the chamber. Through reciprocating linear motion of the pressurizing mechanism (for example, a piston), the liquid medium is alternatively drawn into the chamber from a source of liquid medium (for example, a container) and forced out of the chamber under a desired pressure. Each chamber comprises an inlet port and an outlet port.