Delivery methods, systems and components for use with radiopharmaceutical substances

Abstract

A method and apparatus of dispensing a radiopharmaceutical wherein a source of flushing fluid is connected to a first port of a fluid delivery set; a pressurizing unit of a powered injector system (including a powered injector and the pressurizing unit) is connected to a second port of the fluid delivery set; air is purged from the fluid delivery set; and, after purging air from the fluid delivery set, a third port of the fluid delivery set is connected to a source of the radiopharmaceutical. A valve system is included to control flow of fluid. A syringe is operatively connected with a powered injector. A radioactive shield encloses the syringe during operation to protect personnel from detrimental effects. A dose calibrator measure the radioactivity in the syringe.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application is a divisional of earlier filed U.S. application Ser. No. 10 / 185,290 filed Jun. 27, 2002, the contents of which are incorporated herein by reference; which earlier filed application claims the benefit of U.S. Provisional Application Ser. No. 60 / 301,962, filed on Jun. 29, 2001, the contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention dates to delivery methods, systems and components thereof for use with hazardous or toxic pharmaceutical substances, and especially to delivery and injection methods, systems and components thereof for use with radiopharmaceutical substances. [0004] 2. Prior Art [0005] As used herein, the term “pharmaceutical” refers to any substance to be injected or otherwise delivered, into the body (either human or animal) in a medical procedure and includes, but is not limited to, substances used in imaging proce...

AI Technical Summary

Benefits of technology

[0021] By removing air from the fluid delivery set and the patient fluid path before any connection is made to the source of hazardous pharmaceutical, exposure of administering personnel to the hazardous pharmaceutical to that point is eliminated. Connecting the fluid delivery set to the source of pharmaceutical can be automated or otherwise accomplished remotely (for example, with use of an extending or robotic arm as known in the machine and robotic arts) to prevent exposure during that connection.

[0037] In general, the present invention provides for administration or delivery of a toxic or hazardous pharmaceuticals (for example, radiopharmaceuticals) in a controlled manner to enhance the effectiveness of the pharmaceutical and to enhance patient safety (as compared to current procedures and equipment for delivering such pharmaceuticals), while reducing exposure of administering personnel to the hazardous pharmaceuticals. In general, commercially available injector systems are readily adaptable for use in the present invention without substantial or expensive modification.

Problems solved by technology

A number of such pharmaceutical substances pose a danger to both the patient and the personnel administering the substance if not handled and / or injected properly.

Excessive radiation to technologists and other personnel working in the scanner room can pose a significant risk, however.

Although the half-life of the radiopharmaceutical is rather short and the applied dosages are themselves not harmful to the patient, administering personnel are exposed each time they work with the radiopharmaceuticals and other contaminated materials under current procedures.

Constant and repeated exposure over an extended period of time can be harmful.

Although substantial effort is made to reduce exposure of administering and other personnel to harmful radiation, some exposure is experienced under current procedures.

In addition to the difficulties introduced by the hazardous nature of radiopharmaceuticals, the short half-lives of such radiopharmaceutical further complicate the administration a proper dosage to a patient.

The danger to administering personnel and other difficulties that arise from the nature of hazardous pharmaceuticals such as radiopharmaceuticals often affect the quality and safety of the injection procedure.

For example, given the care that must be taken to prevent radiation overexposure (including limiting the duration of injection procedures), the concern with properly timing an injection and the need to prevent the creation of radioactive wastes, it is often difficult to properly eliminate air from all fluid paths before an injection begins.

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