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 (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 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:
The application relates to radiation shielding (12) for use with radiopharmaceutical syringes (14). For example, in at least some regards, the invention relates to a syringe radiation shield that includes a sleeve (18) having a syringe receptacle defined therein to accommodate a barrel (26) of the syringe. In addition, this syringe radiation shield may also include a cover (20) having a plunger receptacle defined therein to accommodate a plunger of the syringe. The sleeve and the cover may be removably coupled wit one another so that the syringe can be housed within the syringe radiation shield, for example, during administration of a radiopharmaceutical from the syringe.
Abstract:
The invention, in one characterization, may be said to be directed to an alignment adapter that may be utilized in radioisotope elution procedures. In some embodiments, the alignment adaptor may be utilized to at least assist in aligning various components of an elution system. For example, in some embodiments, the alignment adaptor may be utilized to at least generally assist in aligning an aperture defined in a lid of the elution system and an elution needle of a radioisotope generator. In some embodiments, the alignment adaptor may be utilized to at least generally assist in aligning an elution assembly (e.g., elution shield housing an eluate vial) and an elution needle of a radioisotope generator. Further, in some embodiments, the alignment adaptor may be utilized to at least generally assist in aligning an eluant container (e.g., bottle of eluant) and a needle of a radioisotope generator.
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 medical fluid injector system (450) is disclosed that may utilize one or more of flow rate determination logic (130), injection volume determination logic (132), display control logic (134), drive ram motion control logic (136), and pressure monitoring logic (138). The flow rate determination logic (130), injection volume determination logic (132), and display control logic (134) each may utilize a concentration input (172, 192, 202) to calculate flow rates, injection volumes, and generate multi-color graphics, respectively, for a simultaneous injection configuration. The drive ram motion control logic (136) may utilize both a target pressure and a monitored pressure to derive a velocity for advancing a drive ram. The pressure monitoring logic (138) may provide a monitored pressure value for the drive ram control logic (136), where this monitored pressure value may be derived from the input power being used to advance a drive ram and the drive ram velocity.
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.