A plunger for use with a syringe includes a plunger body defining a central longitudinal axis and having a proximal end, a distal end, and a circumferential sidewall connecting the proximal end and the distal end. The plunger further includes at least one retaining member associated with and extending proximally from the plunger body. The at least one retaining member has a first end connected to the plunger body, a second end proximal to the first end and radially and resiliently deflectable relative to the first end, and at least one catch on the second end. A fluid injector system includes a piston having a plunger engagement mechanism configured for interacting with the at least one retaining element of the plunger to releasably engage the plunger for reciprocally driving the plunger within a barrel of the syringe.

A method of maintaining an overall flow rate during a sequential delivery of at least two fluids to a patient’s blood vessel includes delivering at least a first fluid into the patient’s blood vessel at a first flow rate, delivering at least a second fluid into the patient’s blood vessel at a second flow rate, and adjusting at least one of a first flow profile of the first flow rate and a second flow profile of the second flow rate to dampen a transient increase in the overall flow rate during a transition between delivering one of the first fluid and the second fluid to delivering the other of the first fluid and the second fluid.

A chemical liquid injector including a driving mechanism which applies a pressure to a chemical liquid in a container and pushes out the chemical liquid, and an injection control unit for setting operating conditions of the driving mechanism. The control unit has a main-injection condition determination section which determines injection conditions for a main injection, and an injection preliminary operation condition determination section which determines injection conditions for an injection preliminary operation, and is configured to execute the injection preliminary operation and the main injection consecutively in this order when injecting chemical liquid.

A cap for intake and delivery of a fluid from a syringe is described. The cap includes an outer cap assembly comprising a fluid inlet path and a fluid outlet path and an inner cap assembly configured for insertion into a fluid nozzle of the syringe and to provide selective fluid communication between an interior of a syringe and the fluid inlet path or the fluid outlet path. The outer cap assembly is slidable relative to the inner cap assembly between a first filling position, where the interior of the syringe is in fluid communication with the fluid inlet path, and a second delivery position, where the interior of the syringe is in fluid communication with the fluid outlet path. Syringes including the cap are also described.

A pressure jacket configured for connecting to an injector head of a fluid injector has an open distal end, an open proximal end, and a sidewall defining a throughbore extending between the distal end and the proximal end along a longitudinal axis. The throughbore is configured for receiving at least a portion of a syringe. The pressure jacket has at least one syringe retaining element positioned at least partially within the throughbore. The at least one syringe retaining element is configured for engaging at least a portion of the syringe during pressurized delivery of fluid from the syringe to prevent or limit a distal movement of the syringe relative to the pressure jacket.

A pressure jacket configured for connecting to an injector head of a fluid injector has an open distal end, an open proximal end, and a sidewall defining a throughbore extending between the distal end and the proximal end along a longitudinal axis. The throughbore is configured for receiving at least a portion of a syringe. The pressure jacket has at least one syringe retaining element positioned at least partially within the throughbore. The at least one syringe retaining element is configured for engaging at least a portion of the syringe during pressurized delivery of fluid from the syringe to prevent or limit a distal movement of the syringe relative to the pressure jacket.

Aspects of systems and apparatuses for medical infusion illumination are disclosed. In one aspect a system for medical infusion line illumination is disclosed. The system comprising an electronic illuminator. The electronic illuminator comprising a printed circuit board (‘PCB’), a light emitting diode (‘LED’), a lens configured with the LED, a power source to supply power to the PCB and LED; and at least one sensory assembly. The LED and lens of the electronic illuminator are configured to a side scattering fiber optic cable. The side scattering fiber optic cable comprises a fiber funnel cap at a proximal end to receive light from the LED through the lens of the electronic illuminator. The side scattering fiber optic cable further comprises a protective end cap at a distal end, wherein the protective end cap is polished on an interior surface to reflect light from the LED of the electronic illuminator.

Aspects of systems and methods for controlling SAR in medical infusion illumination are disclosed herein. In one aspect a system for reducing microorganism load in an environment surrounding an electronic illuminator is disclosed. In the system an electronic illuminator is disclosed comprising an LED module, a power driver equipped to the LED module for driving power to the LED, housing to protect the contents of the electronic illuminator and dissipate heat, and a PCB configured with an MCU for controlling operations within the electronic illuminator. Further, the system comprises a side emitting fiber optic line or line, also known as side glow fiber. The side emitting fiber optic line comprises a funnel cap for engaging with the electronic illuminator and a protective end cap for protecting and reflecting light radiation. In other aspects, a method for reducing microorganism count in an environment surrounding an electronic illuminator is disclosed. The method comprises provisioning an electronic illuminator equipped with an LED module and a side emitting fiber optic line. Then transmitting a signal, to a power driver of the LED module to begin the microorganism reduction. Next, emitting light radiation, by the LED module, and lastly terminating the light radiation after a set duration.

Aspects of a dual lumen fiber optic medical infusion line and method of manufacture are disclosed herein. The dual lumen fiber optic medical infusion line includes a first elongate body that is substantially cylindrical and extends from a proximal end to a distal end and includes a first lumen extending throughout the entire length of the first elongate body, and a second elongate body that is substantially cylindrical and extends from a proximal end to a distal end and includes a first lumen extending throughout the entire length of the second elongate body, The second elongate body is engaged to the first elongate body. A fiber optic cable is disposed within the first elongate body. A distal end cap is engaged to the distal end of the fiber optic cable, and a fiber funnel cap is engaged to the proximal end of the fiber optic cable.

Aspects of electronic illuminator systems and methods are disclosed herein, including subsystems and methods of use. In one aspect, a sensory system for an electronic illuminator to detect the presence and color of a fiber optic cable is disclosed. The system comprises a fiber optic cable having a proximal end with a fiber funnel cap and a terminal end with a protective cover. An electronic illuminator that further comprises a housing, a printed circuit board (‘PCB’), a light emitting diode (‘LED’), and a power source. The system further comprises an ambient light sensor, configured within the housing of the electronic illuminator, wherein the ambient light sensor converts light intensity to a digital signal. The system further comprises a fiber detection assembly, having a three dimensional magnetic flux density. Lastly, the system comprises a cap color detection assembly, wherein the cap color detection assembly detects the color of the fiber funnel cap on the proximal end of the fiber optic cable.