Mark T. Stewart - Lino Lakes MN, US Johnson E. Goode - Maple Grove MN, US James M. Speckien - Vadnais Heights MN, US Mark A. Taube - Andover MN, US Eduardo N. Warman - Maple Grove MN, US
Assignee:
Medtronic, Inc. - Minneapolis MN
International Classification:
A61N 1/05
US Classification:
607122
Abstract:
Steerable electrophysiology catheters for use in mapping and/or ablation of accessory pathways in myocardial tissue of the heart wall and methods of use thereof are disclosed. The catheter comprises a catheter body and handle, the catheter body having a proximal section and a distal section and manipulators that enable the deflection of a distal segment of the distal tip section with respect to the independently formed curvature of a proximal segment of the distal tip section through a bending or knuckle motion of an intermediate segment between the proximal and distal segments. A wide angular range of deflection within a very small curve or bend radius in the intermediate segment is obtained. At least one distal tip electrode is preferably confined to the distal segment which can have a straight axis extending distally from the intermediate segment. The curvature of the proximal segment and the bending angle of the intermediate segment are independently selectable.
Deflectable Medical Therapy Delivery Device Having Common Lumen Profile
Johnson E. Goode - Austin TX, US Stanten C. Spear - Arden Hills MN, US
Assignee:
Medtronic, Inc. - Minneapolis MN
International Classification:
A61M 31/00
US Classification:
604 9504, 604 9501, 604523, 604528
Abstract:
A medical therapy delivery device that includes a shaft formed by an outer layer and a deflectable tip that includes a tapered portion. A manipulator wire extends through the shaft to adjust deflection of a second portion of the shaft relative to a first portion. The outer layer forms a single shaft lumen having a first lumen portion positioned about a thru lumen tubing and a second lumen portion, offset from and in fluid communication with the first lumen portion, the second lumen portion having a first side wall, a second side wall and a bottom wall extending between the first side wall and the second side wall. The thru lumen tubing, first side wall, the second side wall and the bottom wall position the manipulator wire within the second lumen portion.
Deflectable Medical Therapy Delivery Device Having Common Lumen Profile
A method of locating a target site for delivering a therapy to a patient that includes advancing a delivery device having a steerable portion and a deflectable tip having a tapered portion to an area along a first site. A contrast media is delivered through a thru lumen and outward from a distal end of the delivery device in fluid communication with the thru lumen to position the contrast media along the first site and the delivery device is further advanced toward the first site and within the first site, or the delivery device is further advanced toward the first site and within the first site without the contrast. The contrast media is then delivered from the distal end of the delivery device within the first site to locate the target site.
A tool for slitting an elongate sheath from about an elongate member that is disposed within a longitudinally extending lumen of the sheath includes a longitudinally extending tail portion projecting rearward of a slitting edge and a nose portion of the tool; a lower surface of the nose portion is disposed beneath the slitting edge for engaging a portion of the elongate member. The tail portion of the tool, approximately aligned with the sheath lumen when the lower surface engages the elongate member and a leading edge of the nose portion is within the sheath lumen, is sized to fit within the sheath lumen after the sheath is slit by the slitting edge. A passageway between the nose portion and the tail portion allows a proximal segment of the elongate member to bend away from the tail portion when the elongate member is engaged by the nose portion.
Therapy Delivery System Including A Navigation Element
Mark D. Schneider - Mound MN, US Michael R. Neidert - Minneapolis MN, US Kenneth C. Gardeski - Plymouth MN, US Johnson E. Goode - Maple Grove MN, US
Assignee:
Medtronic, Inc. - Minneapolis MN
International Classification:
A61B 5/05
US Classification:
600424, 606130
Abstract:
An electromagnetic receiver assembly is included in a navigation element for a therapy delivery system. If the system is modular, the navigation element may be an insertable module thereof and/or include a lumen to receive another insertable module.
A tool for slitting an elongate sheath from about an elongate member that is disposed within a longitudinally extending lumen of the sheath includes a longitudinally extending tail portion projecting rearward of a slitting edge and a nose portion of the tool; a lower surface of the nose portion is disposed beneath the slitting edge for engaging a portion of the elongate member. The tail portion of the tool, approximately aligned with the sheath lumen when the lower surface engages the elongate member and a leading edge of the nose portion is within the sheath lumen, is sized to fit within the sheath lumen after the sheath is slit by the slitting edge. A passageway between the nose portion and the tail portion allows a proximal segment of the elongate member to bend away from the tail portion when the elongate member is engaged by the nose portion.
David A. Cox - Austin TX, US Johnson E. Goode - Austin TX, US Philip M. Tetzlaff - Austin TX, US Jean Woloszko - Austin TX, US
Assignee:
ArthroCare Corporation - Austin TX
International Classification:
A61B 18/14
US Classification:
606 41
Abstract:
Electrosurgical wand. At least some of the illustrative embodiment are electrosurgical wands including: an elongate housing that defines a handle end and a distal end; an aspiration aperture on the distal end of the elongate housing the aspiration aperture fluidly coupled to a first fluid conduit, the first fluid conduit within the elongate housing; a discharge aperture on the distal end of the elongate housing, the discharge aperture fluidly coupled to a second fluid conduit, and the second fluid conduit within the elongate housing; a first active electrode of conductive material on the distal end of the elongate housing, the first active electrode between the discharge aperture and the aspiration aperture; and a conductive plate that abuts the discharge aperture, at least a portion of the conductive plate disposed over the discharge aperture.