| 摘要 |
A grommet positioning device (10) includes a positioning member (16), such as a sheath (28), carrying an elastic anchor, fastener or grommet (14) thereon. The grommet (14) is preferably composed of silicone and has a predefined, unstressed interior diameter. The positioning member (16) includes a portion (25) in contact with the grommet, the portion (25) having an outer diameter at least equal to the predefined, unstressed interior diameter of the grommet (14). The positioning member (16) is capable of being split or torn apart along at least the portion (25), so as to release the grommet (14) from the member (16) and allow it to be fixed in position along an object such as a catheter (12). The interior diameter of the grommet (14) is chosen to preclude closure of blockage of the catheter (12) when the grommet (14) is positioned on it. The positioning member (16) is preferably configured as a sheath (28) composed of molecular oriented PTFE, capable of being split along its entire length, and includes pull tabs (46) for causing such splitting. The grommet (14) can include shoulders (44) for assisting securement of the grommet (14) to its environment of use as desired, for example, adjacent to the body (20) of a patient being catheterized. A catheterization apparatus (56) includes a catheter (12) carrying the grommet positioning device (10) on it.
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