# US 10,441,709 B2 · System and method for the effective and reliable delivery of controlled amounts of a medical fluid

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- Number: US 10,441,709 B2
- Document ID: US10441709B2
- Status: Granted
- Kind: B2
- Application number: 15/490,160
- Filed: 2017-04-18
- Published: 2017-08-03
- Granted: 2019-10-15
- Earliest claimed: 2006-11-27
- Applicants: Frank Levy; Kimberley Levy
- Inventors: Frank Levy; Kimberley Levy
- Web page: https://patentgrep.com/patent/US10441709B2

## CPC

- A61M 5/007: {for contrast media}
- A61B 5/00: Measuring for diagnostic purposes (radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00); Identification of persons
- A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers}
- A61M 5/178: Syringes
- A61M 16/0057: {Pumps therefor}
- A61M 16/12: by mixing different gases
- A61M 25/1018: {Balloon inflating or inflation-control devices}
- A61M 25/10185: {Valves}
- F17C 13/00: Details of vessels or of the filling or discharging of vessels
- F17C 13/025: {having the pressure as the parameter}
- A61M 25/10182: {Injector syringes}
- A61M 25/10187: {Indicators for the level of inflation or deflation}
- A61M 39/229: {Single-way cut-off valves}
- A61M 2025/102: {driven by a solenoid-activated pump}
- A61M 2202/0225: Carbon oxides, e.g. Carbon dioxide
- F17C 2201/058: portable (<30 l)
- F17C 2221/013: Carbon dioxide
- F17C 2250/043: Pressure
- F17C 2270/02: for medical applications
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)

## Abstract

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.

## Claims

### Claim 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, wherein the source of pressurized CO2 is a cartridge filled with compressed CO2 and the compressed gas unit includes a pressure regulator outputting CO2 at a selected level of pressure;
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, wherein the control valve assembly includes a valve body having aligned inlet and outlet ports that are respectively communicably connectable to inlet conduit and the outlet conduits;
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 the inlet and outlet conduits connected respectively to the compressed gas unit and the patient, providing the control valve assembly which is interconnected between the inlet and outlet conduits, operating the control valve assembly to communicably join the compressed gas unit and a syringe and transmitting CO2 from the compressed gas unit to only the syringe, adjusting the control valve assembly to communicably join the syringe to the outlet conduit and to isolate the compressed gas unit from then syringe, and operating the syringe to transmit CO2 from the syringe to only the patient through the outlet conduit.