Cook Medical Technologies LLC

Drew P Lyons

Christopher D Bosel

Jeffry Scott Melsheimer

Andrew K Hoffa

A catheter for use in the extracorporeal treatment of bodily fluids comprises a catheter body having a withdrawal port, an infusion port, and a plurality of lumens therein. One of the lumens comprises a withdrawal lumen for transport of fluids withdrawn from a body vessel through the withdrawal port to an extracorporeal treatment unit, such as a dialyzer. Another lumen comprises an infusion lumen for infusion of treated fluids from the extracorporeal treatment unit through the infusion port into the vessel. The withdrawal port is positioned proximally from the infusion port along a length of the catheter body, and includes a generally helical profile.

Catheter port configuration

A loading dilator for positioning a medical apparatus across a stoma formed in a body wall of a patient. The medical apparatus, such as a tracheotomy tube, is sized to fit over a portion of the loading dilator during positioning of the apparatus across the stoma. The loading dilator includes an elongated dilator body having a tapered distal end for facilitating entry into the stoma. The dilator body has an inflatable balloon disposed along an outer surface at the distal end. The balloon is inflatable to a configuration such that a generally smooth diametrical transition is formed between the elongated dilator body and a leading end of the medical apparatus when the medical apparatus is fit over the loading dilator.

Loading dilator with transition balloon

A medical device including a sheath having an inner liner and an outer layer attachable to a coil independent from each other to allow the inner liner and the outer layer the freedom to move coaxially independent from each other. The coil can be closely wound at a predetermined coil spacing sufficient to inhibit portions of the outer layer from entering into voids between the adjacent coil windings. Intermediate layers for bonding between the coil and the inner liner and/or the outer layer may also be provided. A filler material can be disposed within the voids between the adjacent windings of the coil. The filler material has a dimension sized to bridge the void between adjacent coil windings in order to inhibit portions of the outer layer from bonding to the inner liner. The filler material can be in the form of a ribbon.

Flexible sheath

A multi-lumen catheter assembly for use in the extracorporeal treatment of a body fluid of a patient. The catheter assembly includes an elongated catheter body having a pair of lumens extending therethrough, and a septum separating the lumens. The catheter body has an aspiration port in communication with a first lumen for transporting fluid withdrawn from a body vessel to a treatment unit, and an infusion port in communication with a second lumen for return of treated fluid to the vessel. The infusion port is positioned distal of the aspiration port along a length of the catheter body. A flexible member is provided, wherein the flexible member has an end receivable in the first lumen and another end engaged with the catheter body distal of the aspiration port. The flexible member is structured and arranged to maintain a spacing between the aspiration port and a wall of the vessel.

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Ellettsville, IN, United States of America

Drew P Lyons