초록 ▼

A method for using CO2 as a contrast material in medical imaging procedures is disclosed. The method includes providing a source of pressurized CO2. The step of providing includes connecting the source of pressurized CO2 to a compressed gas unit for controlling delivery of the CO2. The method also i

A method for using CO2 as a contrast material in medical imaging procedures is disclosed. The method includes providing a source of pressurized CO2. The step of providing includes connecting the source of pressurized CO2 to a compressed gas unit for controlling delivery of the CO2. The method also includes regulating pressure of the CO2 delivered by the compressed gas unit, transmitting the pressurized CO2 from the compressed gas unit to a control valve assembly for delivery to a patient in controlled dosages, and sequentially processing the CO2 with the control valve assembly and delivering the CO2 to the patient as a contrast media.

대표청구항 ▼

1. A method for using CO2 as a contrast material in medical imaging procedures, comprising: providing a source of pressurized CO2:connecting the source of pressurized CO2 to a compressed gas unit for controlling delivery of the CO2;regulating pressure of the CO2 delivered by the compressed gas unit;

1. A method for using CO2 as a contrast material in medical imaging procedures, comprising: providing a source of pressurized CO2:connecting the source of pressurized CO2 to a compressed gas unit for controlling delivery of the CO2;regulating pressure of the CO2 delivered by the compressed gas unit;transmitting the pressurized CO2 from the compressed gas unit to a control valve assembly for delivery to a patient in controlled dosages;sequentially processing the CO2 with the control valve assembly and delivering the CO2 to the patient as a contrast media, wherein the step of sequentially processing includes providing inlet and outlet conduits connected respectively to the compressed gas unit and the patient, and providing first and second syringes and the control valve assembly, which are interconnected between the inlet and outlet conduits, the control valve assembly includes a valve body having aligned inlet and outlet ports that are respectively communicably connectable to the inlet conduit and the outlet conduits, the valve body further including a first intermediate port to which the first syringe is selectively connected and a second intermediate port to which the second syringe is selectively connected, the control valve assembly further including a stopcock element mounted rotatably within the body and including a channel consisting essentially of a first channel segment and a second channel segment, the first channel segment and the second channel segment being selectively alignable with the inlet port and the first intermediate port to allow for communication between the inlet conduit and the first syringe, the first intermediate port and the second intermediate port to allow for communication between the first syringe and the second syringe, and the second intermediate port and the outlet port to allow for communication between the second syringe and the outlet conduit. 2. The method according to claim 1, wherein the step of sequentially processing includes operating the control valve assembly to communicably join the compressed gas unit and the first syringe and transmitting CO2 from the compressed gas unit to only the first syringe; adjusting the control valve assembly to communicably join the first and second syringes while isolating the first syringe from the compressed gas unit; operating the first syringe to transmit CO2 from the first syringe to only the second syringe through the control valve assembly; adjusting the control valve assembly to, communicably join the second syringe to the outlet conduit and to isolate the first syringe and the compressed gas unit from the second syringe; and operating the second syringe to transmit CO2 from the second syringe to only the patient through the outlet conduit.