초록

A prophylactic or contraceptive device made from a thermoplastic polyurethane material having a generally cylindrical configuration with a closed end.

대표청구항 ▼

The method of preparing a prophylactic device comprising a thin body of substantially homogeneous elastomeric theremoplastic polyurethane material having a substantially cylindrical principal portion which is closed at one end, said cylindrical portion providing a wall of substantially uniform thick

The method of preparing a prophylactic device comprising a thin body of substantially homogeneous elastomeric theremoplastic polyurethane material having a substantially cylindrical principal portion which is closed at one end, said cylindrical portion providing a wall of substantially uniform thickness, which method comprises deforming a sheet of a thermoplastic polyurethane elastomer with a preformed mandril at an elevated temperature, whereby said polyurethane elastomer assumes the shape of said mandril forming a polyurethane prophylactic device having a substantially cylindrical principal portion and a wall of substantially uniform thickness.