An "injection procedure" refers to a medical process in which a substance is introduced into an individual's body using a needle or syringe. Full definition
This is done in exactly the same manner as any usual injection procedure, although, in order to accommodate the microchip, it requires a slightly larger needle. (cesarsway.com)
As detailed in press reports here and here, a «federal judge in Missouri on Tuesday rejected that state's lethal injection procedure for the third time, saying it was inadequate to ensure that condemned inmates did not suffer unnecessary pain during executions.» (sentencing.typepad.com)
Ultrasound also offers advantages in injection procedures. (sportstarsmag.com)