| 摘要 |
A method of making a body cavity insert, e.g. an ear insert, comprises deforming by pressure a pressure deformable sheet of material over an impression of a body cavity, e.g. an ear canal, and separating the impression from the sheet of material without permanently disturbing the shape into which the sheet has been deformed to leave a mould cavity in the sheet of material. A moulding material is then introduced into the mould cavity to provide, when the moulding material solidifies, the body cavity insert. Typically the pressure deformable sheet of material is a sheet of non-toxic, thermoplastics material, e.g. a polycarbonate or silicon rubber material. One example of a suitable moulding material is an acrylic plastics material. |
