Resealable sampling port
OwnerHenry G. Wallaceinventor
Life of this patent
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Abstract
The invention relates to a resealable port (2), or an injection site (24), for use with a syringe cone (16), the port being formed with a housing including a conduit (1) sealed by a resealable diaphragm (7) wherein a sealing annulus (6) is juxtaposed to, and interacts with, the diaphragm (7) to form an annulus and diaphragm assembly whereby the arrangement of the housing and the assembly is such that action of the syringe cone (16) as it passes through the diaphragm generates a cantilever action about a point (12) which serves to seal the diaphragm and the annulus in the housing.
Claims12
A resealable sampling port and sealing assembly for use with a syringe terminating in a blunt syringe cone, said port being formed with a housing including a conduit sealed by said sealing assembly comprising a resealable diaphragm and a sealing annulus, said assembly being retained in a portion of the housing defining a centrally disposed chamber of a first diameter and wherein the assembly is retained in said housing by a retaining cap;
- characterized in that the sealing annulus has a diameter less than the first diameter, thereby creating an annular space between the sealing annulus and the chamber, and forming a laterally slidable seal within said annular space, such that the action of a syringe cone as it passes into the assembly within the housing generates a cantilever action of the assembly against the housing and thus against the cap portion which serves to seal the sealing assembly within the housing.
A sealing assembly sealing a resealable sampling port for use with a syringe, the sealing assembly mounted in a housing having a chamber of a first diameter, said sealing assembly comprising:
- a resealable diaphragm;
- and
- a sealing annulus retained in said housing between a retaining cap and the diaphragm, and within said chamber,
- wherein the sealing assembly has a diameter less than the first diameter, thereby defining an annular space between the assembly and the chamber, and forming a laterally slidable and expandable seal,
- whereby when the syringe passes into the assembly a cantilever action of the sealing annulus against the diaphragm, the housing and the retaining cap seals the resealable sampling port.
Dependencies are inferred from the claim text.