Sealing device for sealing a lead-through for a medical instrument

摘要

A sealing device (30) for sealing a lead-through for a medical instrument (20) comprises a fastening region (36) for fastening the sealing device (30) on a tube (10) or other medical device, a ring-like supporting region (40) which is connected to the fastening region (36), and an annular sealing lip (50) with an outer edge (52) which is connected to an inner edge (44) of the support portion (40), and an inner edge (54) which is provided and designed to fluid-tightly abut at an outer surface of a shaft (20) inserted in the sealing device (30). The difference (D2−DS) of the average diameter (D2) of the inner edge (44) of the support portion (40) and the mean diameter (DS) of a shaft (20) of a medical instrument, for which the sealing device (30) is provided and designed, is not larger than the difference (DS−D1) of the average diameter (DS) of the shaft (20) and the mean diameter (D1) of the inner edge (54) of the sealing lip (50) (D2−DS≦DS−D1).

主权项

1. A sealing device for sealing a lead-through for a shaft of a medical instrument, comprising:
a fastening area for fastening the sealing device on a tube or other medical device; a ring-like supporting portion, which is connected to the fastening area; a ring-like sealing lip with an outer edge, which is connected to an inner edge of the support portion, and an inner edge, which is provided and designed to fluid-tightly abut an outer surface of a shaft inserted in the sealing device, wherein at least either:
the difference of the circumference of the inner edge of the support portion and the periphery of a shaft of a medical instrument, for which the sealing device is provided and designed, is not larger than the difference of the circumference of the shaft and the circumference of the inner edge of the sealing lip in its stress-free state, orthe difference of the average diameter of the inner edge of the support portion and the mean diameter of a shaft of a medical instrument, for which the sealing device is provided and designed, is not larger than the difference of the average diameter of the shaft and the mean diameter of the inner edge the sealing lip.