Pharmaceutical preparation and medical device
A problem to be solved by the present invention is to provide a pharmaceutical preparation to be administered to the intranasal mucosa, and in order to solve such a problem, the present invention provides a pharmaceutical preparation to be administered to the intranasal mucosa, in which the pharmaceutical preparation includes a composite particle containing one or more titanium oxide particles, one or more metal particles, and one or more calcium phosphate particles.
1. A method for preventing or treating rhinitis in a subject in need thereof, the method comprising administering a composite particle to an intranasal mucosa of the subject,
wherein the composite particle comprises at least one titanium oxide particle, at least one metal particle and at least one calcium phosphate particle,
wherein the at least one metal particle is at least one metal particle selected from the group consisting of a silver particle, a gold particle, a platinum particle and a copper particle,
wherein administering the composite particle to the intranasal mucosa of the subject comprises inserting a medical device into a nasal cavity of the subject,
wherein the medical device comprises a sheet portion inserted into the nasal cavity of the subject and the composite particle attached to the sheet portion, and
wherein the medical device is inserted into the nasal cavity of the subject so that the composite particle attached to the sheet portion comes into contact with the intranasal mucosa of the subject, and so that a part of the medical device is inserted into the nasal cavity of the subject and the other part remains outside of the nasal cavity of the subject.
2. The method according to claim 1 , wherein the rhinitis is allergic rhinitis.
3. The method according to claim 1 , wherein, in the composite particle, the at least one titanium oxide particle, the at least one metal particle and the at least one calcium phosphate particle are arranged three-dimensionally and randomly.
4. The method according to claim 1 , wherein at least one metal particle is fixedly attached to at least one titanium oxide particle.
5. The method according to claim 1 , wherein the at least one metal particle is a silver particle, and the at least one calcium phosphate particle is a hydroxyapatite particle.
6. The method according to claim 1 , wherein the sheet portion is breathable.
7. The method according to claim 1 , wherein the composite particle is detachably attached to the sheet portion.
8. The method according to claim 1 , wherein the composite particle is detachably attached to the sheet portion via a binder resin.
9. The method according to claim 8 , wherein the amount of the binder resin is 20 to 90 parts by mass, relative to 100 parts by mass of the composite particle.