Patent ID: 8992458
Filing Date: 2015-03-31
Classification: A61M,B29C

Abstract:
1. A convection-enhanced-delivery (CED) device, comprising: a micro-tip having a proximal portion comprising first and second legs, a central portion, a distal portion, a first fluid channel extending along the first leg of the proximal portion, the central portion, and the distal portions, and a second fluid channel extending along the second leg of the proximal portion, the central portion, and the distal portion, the first and second fluid channels each having an outlet port at a distal end thereof and an inlet port at a proximal end thereof; a first outer sheath disposed coaxially over the distal portion of the micro-tip such that the distal portion of the micro-tip protrudes from a distal end of the first outer sheath; a first tissue-receiving space defined between an exterior surface of the micro-tip and an interior surface of the distal end of the first outer sheath; a catheter body extending proximally from the micro-tip such that the first and second fluid channels of the micro-tip are in fluid communication with respective first and second inner lumens of the catheter body; and a nose portion disposed over at least the central portion of the micro-tip and extending between the first outer sheath and the catheter body such that the nose portion defines an exterior surface that tapers from a reduced distal diameter corresponding to the outside diameter of the first outer sheath to an enlarged proximal diameter corresponding to the outside diameter of the catheter body.