Composite seal structure and a coupling arrangement for a cannula

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The Vaillancourt Vincent L patent solves the following problem:

This invention relates to a composite structure seal as well as a coupling arrangement using the composite seal structure for a cannula. Particularly, this invention relates to a composite seal structure for use in the health care industry.

Our analysis of this patent is as follows:

Vaillancourt Vincent L’s patent US 5211634 A deals with Composite seal structure and a coupling arrangement for a cannula.
The composite seal made a slit elastomeric septum and a sealing member that served to seal against a blunt ended cannula through the slit septum. The composite seal may be a piece of building or two pieces to build. The sealing member may be formed in a special rubber disc frictionally hold a cannula in place. Laing, the sealing member may be formed in a plastic housing that slit septum mounted. In this latter case, the plastic housing has a reduced bore for gripping the cannula. No outside mechanical locking elements needed to secure a cannula in composite structures seal.

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