| 摘要 |
A corneal punch system having a base 10 with a flat planar lower surface 12 so that the base 10 will rest firmly on a flat surface. Affixed to or formed as a part of base 10 is a stand 14 that has a neck 16 extending over a corneal block depression 18 formed in the upper surface of base 10. The depression 18 is formed and adapted to receive and position an interchangeable corneal cutting block 20. The depression 18 has two upstanding pins 26 and 28 to properly oriented the corneal cutting block 20 into the depression 18. Block 20 further includes an ear 34 to mark the "twelve o'clock" position of cutting block 20 with respect to the donor corneal tissue (not shown) and punching device. Thus, when block 20 is properly positioned in the depression 18 of base 10 as shown in Figure 2, an aspheric curve is formed therein to receive the donor corneal tissue (not shown) in the proper rotational orientation with respect to the cutting block and corneal punch system. <IMAGE> |
