Abstract:
A drive train (110) for advancing a syringe plunger (132) in at least one direction is disclosed (e.g., to deliver fluid). This drive train (110) includes a first drive source (116a) and a second drive source (116b). The advancement of the syringe plunger (132) is dependent upon the output (118a) of the first drive source (116a), as well as on the output (118b) of the second drive source (116b). The sum of the outputs (118a, 118b) may be used to advance the syringe plunger (132), the differential of these outputs (118a, 118b) may be used to advance the syringe plunger (132), or each of the outputs (118a, 118b) may be made available to individually advance the syringe plunger (132).
Abstract:
A disclosed contrast media injection system may perform a patency check and/or test injection, and/or may determine flow rate and/or flow volume from a programmed protocol. Tubing that connects syringes to a patient may share only a short common section near to the patient. Appropriate injection steps may be taken to compensate for tubing elasticity. A wireless remote control and/or a touch screen control may be provided, improving functionality and/or information delivery. The display brightness may be controlled based on ambient light, and the display panel may include a double swivel permitting re-orientation. The orientation of the display may be controlled based on various factors. The display may be customizable to identify the type of fluid on either side of the injector, to provide matched color coding, and/or to provide a folder/tab analogy for retrieving injection protocol parameters.
Abstract:
Syringes for use with medical fluid injectors. In certain aspects, the syringe includes a body having a longitudinal axis, a forward end, and a rearward end. At least one syringe mating section is coupled to the body of the syringe and is adapted to operatively engage an injector. In some embodiments, the syringe mating section includes first, second, and third flanges extending outwardly from the body along a plane substantially perpendicular to the longitudinal axis. In some embodiments, the syringe mating section includes a first flange having a cross-section of a parallelogram and a second flange having a tapered surface. In some embodiments, the syringe mating section includes a flange having an L-shaped cross-section. Other embodiments of the syringe mating section may include yet other appropriate designs.
Abstract:
A dual head contrast media injection system performs a patency check or test injection, determining flow rate and/or flow volume from the programmed protocol. The tubing that connects syringes to a patient shares only a short common section near to the patient. Appropriate injection steps are taken to compensate for tubing elasticity. A wireless remote control and a touch screen control are provided, improving functionality and information delivery. The display brightness is controlled based on the ambient light, and the display panel includes a double swivel permitting re-orientation. The orientation of the display may also be controlled based on, e.g., the current step, the tilt angle of the powerhead, or a manual control. Furthermore, the display is customizable to identify the type of fluid (contrast, saline, etc.) on either side of the injector, to provide matched color coding, and to provide a folder/tab analogy for retrieving injection protocol parameters.
Abstract:
A hand-held remote (12) for a medical fluid injector (10) includes a syringe (50) and a conduit (52), which may be coupled to a pressure transducer (54) on a control circuit (42) of the injector (10). Movement of a plunger (62) within a syringe body (64) on the syringe (50) creates a pressure which is sensed by the pressure transducer (54) and the control circuit (42) responds to the sensed pressure by causing fluid to be ejected from, or drawn into, a syringe (24) mounted to the injector (10). The pressure developed by the remote (12) provides tactile feedback to an operator for improved control over injections.
Abstract:
An auto purge protocol (380) is disclosed, and which may be used by power injector contra! logic (350) of a power injector (320). The protocol (380) may only require a single input by an operator to complete. The protocol (380) causes the injector (320) to extend a plunger (326) of a syringe (324) to a first position. Thereafter and without any operator interaction, the injector (320) is caused by the protocol (380) to extend a plunger (330) of another syringe (328) to a second position. A tubing set (332) may be fluidty interconnected with these syringes (324, 328) during the execution of this auto purge protocol (380).
Abstract:
An injection device (210) having an expandable/contractable drive fluid chamber (216) is disclosed. A diaphragm (214) separates the drive fluid chamber (216) from a medical fluid chamber (220). A container (232) having a medical fluid (240) may be positioned in the medical fluid chamber (220). Directing a drive fluid (218) into the drive fluid chamber (216) results in medical fluid (240) being discharged from the injection device (210) by a resulting movement of the diaphragm (214).
Abstract:
A drive train (102) for a dual-head power injector is disclosed that utilizes a single motor (106). The motor (106) may be moved to couple with a first syringe driver (138a). In one embodiment, this same movement also simultaneously locks a second syringe driver (138b). In any case, this motor (106) may also be moved to couple with the second syringe driver (138b). In one embodiment, this same movement also simultaneously locks the first syringe driver (138a).
Abstract:
A multi-dose injection system (108) is disclosed that allows for safe and easy use of bulk containers, a multi-use tubing set (110), and syringes (86a, 86b) across multiple patients. The bulk containers may include a saline bottle (118) and a contrast bottle (120) for administration to a series of patients undergoing imaging procedures. The bottles (118, 120) may be fluidly connected to a cassette (114) that includes a saline valve (176) and a contrast valve (178) operable to control flow from the saline bottle (118) and the contrast bottle (120), respectively. The cassette (114) may be fluidly interconnected to the multi-use tubing set (110) that is, in turn, fluidly connected to syringes (86a, 86b) on a powerhead (50) and a patient-specific tubing set (112). The patient-specific tubing set (112) may be replaced between patients and may also serve to isolate the remainder of the multi-dose injection system (108) from contamination from bodily fluids.
Abstract:
A power injector (40) includes a movable ram (74) operable to interface with and move a plunger (90a/b) of a syringe (86a/b). The power injector (40) may be operable to automatically determine a proper home position for the particular type of syringe (86a/b) to be used in a fluid injection sequence. The power injector (40) may also include ram homing logic (182) operable to automatically move the ram (74) to a home position after an injection. Such automatic homing of the ram (74) may, for example, be initiated by the end of an injection sequence in preparation for another injection sequence, by the opening of a faceplate (102a/b), by a user input, or by any combination thereof.