Methods and devices for inserting a needle

US10201655B2 · kind B2 · utility

Assignees

• The Brigham and Women's Hospital, Inc. · US
• Massachusetts Institute of Technology · US

Inventors

• Eoin O'Cearbhaill · Blanchardstown, IE
• Bryan Laulicht · Cambridge, US
• Alexander H. Slocum · Bow, US
• Robert S. Langer · Newton, US
• Omid C. Farokhzad · Sharon, US
• Jeffrey M. Karp · Brookline, US

Key dates

• Filing date: Aug 7, 2013
• Grant date: Feb 12, 2019
• Expiry date: Mar 28, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/1585
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An apparatus provides targeted placement of openings for infusing fluids into a body. 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 due to contraction of an element made of interlaced flexible elements. A multi-opening needle is provided in some embodiments wherein placement of one of the openings in a target region with a relatively lower external pressure allows pressurized fluid to exit the needle while openings remaining in higher pressure, non-target regions do not release substantial amounts of the fluid.