In-vitro Diagnostic Analyzer Installation Structure

The patent introduces a valve core as an intermediary component between the pressing part and the sample inlet channel. The valve core includes a valve body with a valve hole and a valve seat with a sealing hole. The pressing part acts on the valve core to control the valve hole's opening and closing state, which in turn controls the sample solution flow. This intermediary structure ensures reliable sealing and prevents leakage even when the reagent card is not inserted in place or the pressing part is deviated.

The valve core serves as an intermediary that decouples the sealing function from the extrusion mechanism. The valve seat with the sealing hole provides a reliable sealing interface that is not affected by temperature or pressure conditions. The pressing part only needs to control the valve hole's opening and closing, not maintain continuous extrusion force. This allows the sample solution to be successfully extracted even when ambient temperature is low or negative pressure is large.

The valve core with its valve hole and valve seat structure provides a reliable mechanical control mechanism. The pressing part can reliably close the valve hole by pressing the valve core against the valve seat, and the valve hole can be reliably opened by releasing the pressing force. This intermediary structure ensures consistent and reliable opening and closing operation, eliminating the uncertainties of self-reset mechanisms.