Needle hub and sheath structure

Claim 1

A DISPOSABLE HYPODERMIC NEEDLE CONTAINING UNIT FOR PROTECTIVELY ENCLOSING AT LEAST ONE END OF A HYPODERMIC NEEDLE CANNULA WHICH COMPRISES; A DISPOSABLE NON-VITREOUS PLASTIC NEEDLE HUB-SUPPORTING SECTION WITH AN AXIAL PASSAGE EXTENDING THERETHROUGH, SAID HUB-SUPPORTING SECTION ADAPTED TO FIXEDLY ENGAGE AN ENLARGED DIAMETER HUB SECTION FORMED ON A HYPODERMIC NEEDLE CANNULA SPACED LONGITUDINALLY FROM A PENETRATING POINT AT AN END THEREOF, A POINTED HYPODERMIC NEEDLE CANNULA WITH AN ENLARGED DIAMETER HUB SECTION FIXEDLY FORMED THEREON AND SEALABLY MOUNTED IN SAID HUB-SUPPORTING SECTION WITH A PORTION OF SAID ENLARGED DIAMETER HUB SECTION EXTENDING AXIALLY BEYOND THE END OF SAID HUB-SUPPORTING SECTION, A SHEATH SECTION EXTENDING AXIALLY FROM SAID END OF SAID HUB-SUPPORTING SECTION AND HAVING AN AXIALLY EXTENDING RECESS THEREIN CONNECTING WITH SAID AXIAL PASSAGE, A REDUCED DIAMETER SEALABLY CONNECTING SAID END OF SAID HUB-SUPPORTING SECTION WITH SAID SHEATH SECTION AND SAID FRANGIBLE SECTION BEING DISPOSED INTERMEDIATE THE ENDS OF SAID ENLARGED DIAMETER HUB SECTION AND IN ENGAGEMENT WITH SAID ENLARGED DIAMETER HUB SECTION, SAID SHEATH SECTION ADAPTED TO SEALABLY ENCLOSE SAID HYPODERMIC NEEDLE CANNULA FROM SAID CANNULA HUB SECTION TO SAID POINT WHEN SAID CANNULA HUB SECTION IS IN SEALING ENGAGEMENT WITH SAID HUB-SUPPORTING SECTION, AND SAID SHEATH SECTION ADAPTED TO BE SEVERABLE FROM SAID HUB-SUPPORTING SECTION WITHOUT DESTROYING SAID SHEATH SECTION ONLY BY ROTATION OF SAID SHEATH SECTION ABOUT SAID EXTENDING PORTION OF SAID ENLARGED DIAMETER HUB SECTION WHICH SERVES AS A PIVOTAL SUPPORT DURING ROTATION OF SAID SHEATH SECTION; THEREBY PERMITTING REMOVAL OF SAID SHEATH SECTION WITHOUT DAMAGING SAID CANNULA.