Inhalative and instillative use of semifluorinated alkanes as an active substance carrier in the intrapulmonary area
First Claim
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1. A medical composition configured for administering by direct transport of at least one drug directly into lung regions of a patient during inhalation, comprising:
- a carrier for at least one active substance, wherein the carrier is at least one semifluorinated alkane of the type RFRH, wherein RF is a straight chain or branched perfluoro alkyl group and RH is a straight chain or branched saturated hydrocarbon group, and wherein the composition comprises a solution at room temperature and wherein at least part of the carrier vaporizes at temperatures in the lung regions of a patient;
wherein the length of each RF and RH segment is 2 to 20 carbon atoms, the at least one active substance being dispersed in the carrier as a colloid or molecular dispersion with a particle size of less than 100 nm at a concentration at which the active substance is configured to remain deposited when the semifluorinated alkane is exhaled; and
wherein the at least one active substance is selected from the group consisting of mucolytic and antispasmodic, bronchial-enlarging, surface-active, antiinflammatory and antiischaemic substances, or wherein the at least one active substance is selected from the group consisting of the cytostatic agents, antiviral agents, bacteriostatic agents, antiasthmatic agents, antihistamines, antiinflammatory, bronchial-enlarging, circulation-enhancing medicaments, proteins, growth factors, peptides, and vitamins.
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Abstract
A medical aid for the direct transport of at least one drug into lung regions of a patient, wherein provided as the carrier for at least one active substance is at least one semifluorinated alkane in which the at least one active substance is purely physically dissolved in a homogeneous phase.
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Citations
19 Claims
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1. A medical composition configured for administering by direct transport of at least one drug directly into lung regions of a patient during inhalation, comprising:
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a carrier for at least one active substance, wherein the carrier is at least one semifluorinated alkane of the type RFRH, wherein RF is a straight chain or branched perfluoro alkyl group and RH is a straight chain or branched saturated hydrocarbon group, and wherein the composition comprises a solution at room temperature and wherein at least part of the carrier vaporizes at temperatures in the lung regions of a patient; wherein the length of each RF and RH segment is 2 to 20 carbon atoms, the at least one active substance being dispersed in the carrier as a colloid or molecular dispersion with a particle size of less than 100 nm at a concentration at which the active substance is configured to remain deposited when the semifluorinated alkane is exhaled; and wherein the at least one active substance is selected from the group consisting of mucolytic and antispasmodic, bronchial-enlarging, surface-active, antiinflammatory and antiischaemic substances, or wherein the at least one active substance is selected from the group consisting of the cytostatic agents, antiviral agents, bacteriostatic agents, antiasthmatic agents, antihistamines, antiinflammatory, bronchial-enlarging, circulation-enhancing medicaments, proteins, growth factors, peptides, and vitamins. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19)
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15. A method of depositing an active substance on a lung, comprising:
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selecting at least one active substance from the group consisting of mucolytic and antispasmodic, bronchial-enlarging, surface-active, anti-inflammatory and anti-ischaemic substances, or selecting the at least one active substance from the group consisting of the cytostatic agents, antiviral agents, bacteriostatic agents, antiasthmatic agents, antihistamines, anti-inflammatory, bronchial-enlarging, circulation-enhancing medicaments, proteins, growth factors, peptides, and vitamins;
dispersing the at least one active substance in a carrier including a semifluorinated alkane, the composition comprising a colloid or molecular dispersion at room temperature with a particle size of less than 100 nm and at a concentration at which the active substance remains deposited on the surface of the lung and at least part of the carrier vaporizes at temperatures in the lung regions of a patient;administering the composition comprising the dispersed active substance and the semifluorinated alkane being of the type RFRH, wherein RF is a straight chain or branched perfluoro alkyl group and RH is a straight chain or branched saturated hydrocarbon group with the length of each RF and RH segment being 2 to 20 carbon atoms, by directly transporting the composition to a surface of the lung during inhalation, and depositing the active substance on the surface of the lung when the semifluorinated alkane is exhaled.
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Specification