| 摘要 |
<p>A housing that can be used to form and maintain a fluid-tight connection between a container and a medical device. The housing comprises an internal receiving surface circumscribing a cavity into which a fitting of the medical device can be inserted. The internal receiving surface comprises a first wall portion having a first contact annulus and a second wall portion having a second contact annulus. Upon insertion of the fitting into an opening in the cavity of the housing, the fitting forms a primary seal with the first contact annulus and a secondary seal with the second contact annulus. The primary seal is formed as the surface of the fitting contacts the first contact annulus of the internal receiving surface of the housing. A hoop stress caused by the contact between the fitting and the first contact annulus produces a strain in the wall portion of the housing adjacent to the first contact annulus. This strain allows the diameter of the first contact annulus to expand. As the fitting continues to advance in the cavity, the first contact annulus eventually expands to a sufficient diameter to allow the fitting to contact the second contact annulus. The secondary seal is formed as the surface of the fitting contacts the second contact annulus of the internal receiving surface of the housing.</p> |
