Abstract: An apparatus provides feedback regarding the material in which tip of the apparatus is located as the tip is advance into matter of varying resistances. The apparatus responds to a change in pressure, force, or other parameter such that when the tip reaches matter of a certain resistance, a change in the parameter is sensed. The apparatus provides a driving force to a penetrating medical device, such as a needle, when the apparatus tip encounters material of high resistance. When the apparatus tip encounters a low resistance material, no further driving force is applied to the apparatus. An inner core may be advanced into the low resistance material for deployment of a gas or a liquid as desired.
Type:
Application
Filed:
February 7, 2008
Publication date:
May 26, 2011
Applicants:
Massachusetts Institute of Technology, The Brigham and Womer's Hospital ,Inc.
Inventors:
Alexander Slocum, Erik Bassett, Jeffrey M. Karp, Robert S. Langer, Omid C. Farokhzad