| 摘要 |
<p>A small diameter reinforced catheter is produced by wrapping precoated reinforcing strands (30) on the surface of a mandrel (32) and the wrapped mandrel is introduced into a heated die (34) which compresses the wrapped strands against the mandrel (32) and at the same time heats and cures the prepolymer with both conducting and radiant heat. This allows the strands to sink into the tubing wall. Following this, the compression and the conductive heating is removed while the tubing continues to be exposed to radiant heat from the die (34). During this last stage, the tension in the strands induces the strands to assume a predetermined position between the inner and outer surfaces of the tubing.</p> |
