Atraumatic tip geometry for indwelling devices

US10117738B2 · kind B2 · utility

Assignee

• THE REGENTS OF THE UNIVERSITY OF MICHIGAN · US

Inventors

• Farokh R. Demehri · Ann Arbor, US
• Daniel H. Teitelbaum · Ann Arbor, US
• Jonathan E. Luntz · Ann Arbor, US
• Brent Utter · Easton, US
• Diann Brei · Milford, US
• Jennifer Freeman · Hanover, US

Key dates

• Filing date: Jan 25, 2016
• Grant date: Nov 6, 2018
• Expiry date: Jul 27, 2036

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2250/0069
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An indwelling device for insertion in a biological tubular structure comprising an elongated device having a body and opposing ends. The body has a bending stiffness transverse to a longitudinal axis that is greater than a stiffness of the biological tubular structure. An atraumatic tip member, having a proximal end and a distal end, extends from the end of the elongated device. The proximal end has a first bending stiffness transverse to a longitudinal axis and the distal end has a second bending stiffness transverse to the longitudinal axis, wherein the second bending stiffness being less than the first bending stiffness.