Processing

Please wait...

Settings

Settings

Goto Application

1. US20120148493 - Composite Materials Loaded with Therapeutic and Diagnostic Agents Comprising Polymer Nanoparticles and Polymer Fibers

Office United States of America
Application Number 13256872
Application Date 16.03.2010
Publication Number 20120148493
Publication Date 14.06.2012
Publication Kind A1
IPC
A61K 9/70
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
70Web, sheet or filament bases
A61P 9/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
9Drugs for disorders of the cardiovascular system
A61P 11/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
11Drugs for disorders of the respiratory system
A61P 11/06
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
11Drugs for disorders of the respiratory system
06Antiasthmatics
A61P 35/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
35Antineoplastic agents
A61P 17/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
17Drugs for dermatological disorders
CPC
A61K 9/5153
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
48Preparations in capsules, e.g. of gelatin, of chocolate
50Microcapsules ; having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
51Nanocapsules; Nanoparticles;
5107Excipients; Inactive ingredients
513Organic macromolecular compounds; Dendrimers
5146obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, polyamines, polyanhydrides
5153Polyesters, e.g. poly(lactide-co-glycolide)
A61K 9/70
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
70Web, sheet or filament bases ; ; Films; Fibres of the matrix type containing drug;
Applicants Schmehl Thomas
Nguyen Juliane
Beck-Broichsitter Moritz
Gessler Tobias
Kissel Thomas
Thieme Marcel
Inventors Schmehl Thomas
Nguyen Juliane
Beck-Broichsitter Moritz
Gessler Tobias
Kissel Thomas
Thieme Marcel
Title
(EN) Composite Materials Loaded with Therapeutic and Diagnostic Agents Comprising Polymer Nanoparticles and Polymer Fibers
Abstract
(EN)

The invention relates to composite materials comprising polymer nanofibers and polymer nanoparticles, wherein at least one of the two polymer materials is loaded with a substance selected from therapeutic and diagnostic agents. Fibers and nanoparticles can comprise identical or different polymers; the polymer materials are, however, biocompatible in every case. Therapeutic and diagnostic agents can be hydrophilic or lipophilic and the two polymer materials likewise. The at least one polymer material and the substance with which said material is loaded are either both hydrophilic or both lipophilic. The polymer nanoparticles of the composite materials have a diameter of 10 nm to 600 nm. The polymer fibers have diameters of 10 nm to 50 μm and lengths of 1 μm to several meters. The invention further relates to a method for producing said composite materials. Polymer nanoparticles can be produced in different ways, such as through controlled precipitation of a polymer solution that optionally comprises a loading substance. The nanoparticles are then mixed with another polymer and a loading substance as applicable, depending on whether particles, fibers or both are to be loaded with substance. The processing of this solution into composites comprising polymer fibers polymer nanoparticles can occur by means of electrospinning, melt spinning, extruding or template process. Composite materials according to the invention are suitable for the production of pharmaceuticals that release therapeutically or diagnostically effective substances slowly and in a controlled manner.