초록 ▼

The specification describes and claims a method of making therapeutic rings from a curable silicone rubber based composition. The rings are capable of controlled release of the therapeutic agent in the human or animal body. The method includes the steps of: (i) extruding a first composition comprisi

The specification describes and claims a method of making therapeutic rings from a curable silicone rubber based composition. The rings are capable of controlled release of the therapeutic agent in the human or animal body. The method includes the steps of: (i) extruding a first composition comprising a therapeutic agent and a first elastomer-forming silicone composition to provide a core; (ii) extruding a second composition comprising a second elastomer-forming silicone composition to provide a sheath enclosing the core; (iii) bringing together end portions of a piece of extruded core and sheath to form a ring, (iv) effecting crosslinking of the extruded core, and (v) effecting crosslinking of the extruded sheath.

대표청구항 ▼

A method of making a ring capable of the controlled release of a therapeutic agent in a body comprising the following steps namely: (i) extruding a first composition comprising a therapeutic agent and a first elastomer-forming silicone composition to provide a core; (ii) extruding a second compositi

A method of making a ring capable of the controlled release of a therapeutic agent in a body comprising the following steps namely: (i) extruding a first composition comprising a therapeutic agent and a first elastomer-forming silicone composition to provide a core; (ii) extruding a second composition comprising a second elastomer-forming silicone composition to provide a sheath enclosing the core; (iii) bringing together end portions of a piece of extruded core and sheath to form a ring, (iv) effecting crosslinking of the extruded core, and (v) effecting crosslinking of the extruded sheath.