摘要:
A method for preparing controllably biodegradable silica fibres which includes spinning the fibres from a silica sol of controlled viscosity, controllably biodegradable silica fibres prepared according to the method, methods for controlling the biodegradability of the fibres, the use of controllably biodegradable fibres as sustained and/or controlled release delivery devices for biologically active agents, and pharmaceutical preparations containing such devices.
摘要:
Controllably dissolvable silica-xerogels prepared via sol-gel process and their use. A delivery device including controllably dissolvable silica-xerogel into which structure a biologically active agent is incorporated. Pharmaceutical preparations including this device. Medical devices for orthopedic and surgical purposes which contain controllably dissolvable silica-xerogels, which may further include a biologically active agent.
摘要:
Controllably dissolvable silica-xerogels prepared via sol-gel process and their use. A delivery device including controllably dissolvable silica-xerogel into which structure a biologically active agent is incorporated. Pharmaceutical preparations including this device. Medical devices for orthopedic and surgical purposes which contain controllably dissolvable silica-xerogels, which may further include a biologically active agent.
摘要:
A biodegradable carrier is produced for preservation and/or controlled delivery of biologically active agents where said biodegradable carrier is a silica xerogel which is made from water and silane by using acid or base as a catalyst, and biologically active agents in said biodegradable carrier are infecting and/or transfecting viruses. Silica xerogel material can be pharmaceutically acceptable and it can be used as a medicine.
摘要:
The invention relates to a method for contraception and for reducing menstrual problems and inducing amenorrhea, wherein an intrauterine delivery device is used for the controlled release of a combination of progestogen or a drug having a progestogenic activity and at least one therapeutically active substance capable of preventing or suppressing abnormal and/or irregular endometrial bleeding over a prolonged period of time.
摘要:
A biodegradable carrier is produced for preservation and/or controlled delivery of biologically active agents where said biodegradable carrier is a silica xerogel which is made from water and silane by using acid or base as a catalyst, and biologically active agents in said biodegradable carrier are infecting and/or transfecting viruses. Silica xerogel material can be pharmaceutically acceptable and it can be used as a medicine.
摘要:
A material for medical use in humans and/or animals bearing a biologically active agent, the material being multilayered, as well as a device of this material and a method to produce it. The material includes a core material, where the core material is formed into a body, optionally having the shape of a finished device; two or more layers of coating material of which the first layer has been applied onto the core material and additional layers have been applied onto the coating material of a preceding layer; and where at least one of the layers includes the biologically active agent. A feature of this invention is that the coating material is a biopolymer, a sol-gel produced silica gel or a biologically active molecule.
摘要:
A biodegradable carrier is produced for preservation and/or controlled delivery of biologically active agents where the biodegradable carrier is a silica xerogel which is made from water and silane by using acid or base as a catalyst, and biologically active agents in the biodegradable carrier are infecting and/or transfecting viruses. Silica xerogel material can be pharmaceutically acceptable and it can be used as a medicine.
摘要:
A composition for controlled release of a biologically active agent from a carrier. The biologically active agent is heparin or a related biologically active acidic polysaccharide and the carrier is a sol-gel derived silica xerogel. The xerogel is derived from a tetraalkoxysilane such as tetrethoxysilane (TEOS) and part of the tetraalkoxysilane is replaced by an organomodified alkoxysilane, preferably an akylsubsitituted alkoxysilane. The invention also includes a method for the preparation of this composition.