초록

A therapeutic preparation for inhalation which comprises insulin and a substance which enhances the absorption of insulin in the lower respiratory tract, is provided in the form of a powder preparation suitable for inhalation.

대표청구항 ▼

A therapeutic preparation for inhalation which comprises insulin and a substance which enhances the absorption of insulin in the lower respiratory tract, is provided in the form of a powder preparation suitable for inhalation. reater than 25,000 comprising the steps of providing a substantially pure

A therapeutic preparation for inhalation which comprises insulin and a substance which enhances the absorption of insulin in the lower respiratory tract, is provided in the form of a powder preparation suitable for inhalation. reater than 25,000 comprising the steps of providing a substantially pure alumina powder having a total impurity level of less than 300 ppm and a particle size in the order of 0.01 to 2 microns, homogeneously mixing said powder with less than 5% by weight of a dopant comprising metal oxides, sintering the mixture of alumina and dopant in a non-reducing atmosphere until the density is at least 98% and the Q value is greater than 25,000 at 9-10 GHz at 25° C. 14. The method of claim 13 wherein said non-reducing atmosphere is air. 15. A sintered alumina produced by the process of claim 13.