| 摘要 |
An adjustable insertion length entry sealing anchor as used with cannulas. All non-orifice catheters require an entry which is an injury to the recipient. That injury site has the same potential for infection, drainage and other complications as a non beneficial injury. A catheter entry site must accommodate relatively unrestricted movement of the catheter to allow its accurate placement and reduce the probability of further trauma to surrounding tissue during manipulation. The cooperation of the surrounding tissue's natural elasticity and a tapered, stepped or contoured sealing means inserted into the entry site provide a seal that will tend to lessen the opportunity for contamination of or drainage from the entry site. The elasticity of the surrounding tissue also promotes a healing time that is comparable to an insertion without a sealing means and is especially better than a site that is compromised by an infectious or noxious agent. The control of drainage also increases recipient comfort and decreases the presence of growth media for pathogenic agents. This is most beneficial to catheter applications which require the catheter to remain in the recipient for an extended time. It is also often further desirable to customize the catheter's exterior length for the comfort of the recipient, ease of use and to reduce snagging. The present invention provides for entry site sealing by a tapered, stepped or contoured slideably engaged generally winged anchor that further accommodates customization of the catheters length or other manipulations without compromising the proper positioning of the distal tip.
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