SYSTEMS AND METHOD OF DELIVERING FLUIDS TO A PATIENT OF VARYING CONCENTRATION

• US 20160263251A1
• Filed: 01/11/2016
• Published: 09/15/2016
• Est. Priority Date: 06/06/2006
• Status: Abandoned Application

• Current Assignee: Bayer Intellectual Property GmbH (Bayer AG)
• Original Assignee: Bayer Pharma AG (Bayer AG)
• Inventors: Lawaczek, Ruediger, Kalafut, John F.
• Application Number:
  US14/992,414
• Publication Number:
  US 20160263251A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61K 49/0438 Organic X-ray contrast-enhancing agent comprising an iodinated group or an iodine atom, e.g. iopamidol
• CPC Class Codes: A61K 49/0447 Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is a halogenated organic compound
• CPC Class Codes: A61K 49/0452 Solutions, e.g. for injection
• CPC Class Codes: A61K 49/18 characterised by a special physical form, e.g. emulsions, microcapsules, liposomes
• CPC Class Codes: A61M 31/005 for contrast media
• CPC Class Codes: A61M 5/007 for contrast media

Abstract

A method for injection of an imaging contrast into a patient, includes: a. in a first phase, injecting a fluid having a first concentration of contrast agent for a first period of time; and b. in a second phase, injecting a fluid having a second concentration of contrast agent for a second period of time. The osmolarity of the second phase is higher than the osmolarity of the first phase. In several embodiments in which the contrast agent of the first phase is of the same composition as the contrast agent of the second phase, the second concentration can be higher than the first concentration. The first phase can, for example, precede the second phase. The method can further include: c. in a third phase, subsequent to the second phase, injecting a fluid having a third concentration of contrast agent for a third period of time. The osmolarity of the third phase is lower than the osmolarity of the second phase. In embodiments in which the composition of the contrast agent of the third phase is the same as the composition of the contrast agent of the second phase, the third concentration can be lower than the second concentration. The fluid injected in the first phase can, for example, be closer to the osmolarity of blood that the fluid injected in the second phase and can even be generally iso-osmolar to blood plasma (for example, within 20% or even 10% or less of the osmolarity of blood plasma of the patient). Likewise, the fluid injected in the third phase can be closer to the osmolarity of blood plasma that the fluid injected in the second phase and can even be generally iso-osmolar to blood.

Claims

1-50. -50. (canceled)

51. A method for injection of an imaging contrast into a patient, comprising:

a. in a first phase, injecting a fluid having a first concentration of contrast agent for a first period of time, wherein the first concentration of contrast agent includes contrast;

b. in a second phase, subsequent to the first phase, injecting a fluid having a second concentration of contrast agent for a second period of time, the second concentration being higher than the first concentration of contrast agent; and

c. in a third phase, subsequent to the second phase, injecting a fluid having a third concentration of contrast agent for a third period of time, the third concentration being lower than the second concentration of contrast agent, wherein the third concentration of contrast agent includes contrast,

wherein each of the first phase, the second phase, and the third phase proceed according to a set of injection parameters, including at least one of injection flow rate, injection volume, and injection duration, determined in advance of the first phase.