INJECTION APPARATUS AND METHOD OF INJECTING
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Abstract
AN INJECTION APPARATUS USEABLE FOR BOTH PRE-INJECTION AND COMPLETING THE INJECTION OF AN ANESTHETIC, AND A METHOD OF PRE-INJECTING AND COMPLETING THE INJECTION. PREINJECTION IS ACCOMPLISHED AT A HIGH PRESSURE AND THEREAFTER THE INJECTION IS COMPLETED AT A LOWER PRESSURE UNDER MANUAL CONTROL. BOTH INJECTION STAGES UTILIZE A NEEDLE. THE APPARATUS ALSO INCLUDES A SPRING LOADED PLUNGER MOVABLE TO INJECT ANESTHETIC THROUGH THE NEEDLE AT A HIGH PRESSURE AND FURTHER MOVABLE FOR MANUAL INJECTION OF ANESTHETIC THROUGH THE NEEDLE AT THE LOWER PRESSURE. THE NEEDLE IS ADJUSTABLE RELATIVE TO THE INJECTOR HOUSING FOR DEEPER TISSUE PENETRATION DURING THE LOW PRESSURE INJECTION.
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