Catheter with centering wire
AssigneeCook Medical Technologies LLC
InventorBruce Gingles
Life of this patent
Estimating the term…
Abstract
A catheter assembly for use in the extracorporeal treatment of bodily fluids. The assembly 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 One of the lumens comprises a withdrawal lumen for transport of fluids withdrawn from a body vessel through the withdrawal port to an extracorporeal treatment unit, such as a dialyzer.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 return of treated fluids from the extracorporeal treatment unit into the body vessel through the infusion port. A wire extends from yet another lumen to an attachment point on the catheter assembly. The wire is capable of bowing radially outwardly from the catheter body, in order to space the infusion and withdrawal ports from the vessel wall.
Claims16
A catheter assembly for use in the extracorporeal treatment of bodily fluids, comprising:
- a catheter body, said catheter body having a withdrawal port, an infusion port, and a plurality of lumens therein;
- one of said lumens comprising a withdrawal lumen for transport of fluids withdrawn from a body vessel through said withdrawal port to an extracorporeal treatment unit, and another of said lumens comprising an infusion lumen for infusion of treated fluids from said extracorporeal treatment unit through said infusion port into the vessel, said catheter body including at least one additional lumen;
- and a wire extending from said at least one additional lumen to an attachment point on said catheter assembly, said wire defining a loop extending radially outwardly from said catheter body and oriented in a manner such that when said catheter is in said vessel said wire maintains a spacing between said withdrawal port and a wall of said vessel;
- said catheter assembly further comprising a manifold disposed at a proximal end of said catheter body, wherein a proximal end of said wire extends through said at least one additional lumen and said manifold and a distal end of said wire comprises said radially extending portion;
- the proximal end of said wire being movable between a first position wherein said wire distal end does not extend radially outwardly, and a second position wherein said wire distal end extends radially outwardly from said catheter body to define said loop;
- and
- a stop member at said proximal end of said wire for selectively limiting movement of said wire between said first and second positions to a defined distance.
A catheter assembly, for use in the extracorporeal treatment of bodily fluids, comprising:
- a catheter body, said catheter body having a withdrawal port, an infusion port, and a plurality of lumens therein;
- one of said lumens comprising a withdrawal lumen for transport of fluids withdrawn from a body vessel through said withdrawal port to an extracorporeal treatment unit, and another of said lumens comprising an infusion lumen for infusion of treated fluids from said extracorporeal treatment unit through said infusion port into the vessel, said catheter body including at least one additional lumen;
- and a wire extending from said at least one additional lumen to an attachment point on said catheter assembly, said wire defining a loop extending radially outwardly from said catheter body and oriented in a manner such that when said catheter is in said vessel said wire maintains a spacing between said withdrawal port and a wall of said vessel;
- wherein said catheter body includes a channel portion, said withdrawal port being disposed at said channel portion;
- wherein said channel portion has a proximal end and a distal end, and wherein said wire spans said channel portion from said proximal end to an attachment point at said distal end.
A catheter assembly for use in the extracorporeal treatment of bodily fluids, comprising:
- a catheter body, said catheter body including first and second cut-out portions along a longitudinal surface thereof, said catheter body having a withdrawal port disposed at said first cut-out portion and an infusion port disposed at said second cut\-out portion, said catheter body further having first and second fluid flow lumens therein, said first lumen comprising a withdrawal lumen for receiving fluids from a body vessel through said withdrawal port for transport to an extracorporeal treatment unit, and said second lumen comprising an infusion lumen for receiving treated fluids from said extracorporeal treatment unit for return to said body vessel through said infusion port;
- and
- a centering wire engaged with said catheter body at said first cut-out portion, and another centering wire engaged with said catheter body at said second cut-out portion, each of said centering wires capable of extending radially outwardly from said catheter body to form a respective loop.
Dependencies are inferred from the claim text.