Brian D. Hemond,Ian W. Hunter,Andrew J. Taberner,Dawn M. Wendell,N. Catherine Hogan
申请号：
US13269421
公开号：
US08740838B2
申请日:
2011.10.07
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A method for injecting a substance through a biological body surface includes providing a needle-free transdermal transport device configured to inject the substance through the surface. The substance is injected into the biological body with the transport device while a parameter of the injection is sensed and a servo-controller is used to dynamically adjust at least one injection characteristic based on the sensed parameter. The substance is injected for (i) a first time period during which a first portion of a volume of the substance is injected at a first injection pressure, and (ii) a second time period during which a remainder of the volume of the substance is injected at a second injection pressure. A viscosity of the substance may be determined, and a pressure calculated for injecting the substance based on the viscosity. The substance may be injected with the transport device by using the calculated pressure.
