Multilumen catheter for minimizing limb ischemia
First Claim
1. A multilumen catheter for directing the flow of blood through a patient through a single cannulation site, said catheter comprising:
- a catheter having a proximal end, a first distal end, and a second distal end, said first distal end extending distally farther from the proximal end than the second distal end;
a first lumen extending between said first distal end and said proximal end;
a second lumen extending between said second distal end and said proximal end; and
a redirecting tip positioned at the distal end of one of the lumens and configured to redirect at least a portion of the blood flow exiting said lumen in a direction generally opposite of the direction of flow.
1 Assignment
0 Petitions
Accused Products
Abstract
A multilumen catheter that maximizes the blood flow into and out of the patient'"'"'s vasculature while also providing for passive and/or active perfusion of tissue downstream of where the catheter resides in the vasculature. The inventive catheter comprises a proximal end, a first distal and a second distal end with first and second lumens extending from the proximal end to each of these distal ends to provide for blood circulation within one blood vessel or between two different blood vessels. The second lumen, and any additional lumens so desired, may be positioned coaxially with or radially around the first lumen. Redirecting means is provided at a distal end of at least one of said lumens for directing blood in a direction generally opposite of the direction of flow through said lumen.
-
Citations
17 Claims
-
1. A multilumen catheter for directing the flow of blood through a patient through a single cannulation site, said catheter comprising:
-
a catheter having a proximal end, a first distal end, and a second distal end, said first distal end extending distally farther from the proximal end than the second distal end;
a first lumen extending between said first distal end and said proximal end;
a second lumen extending between said second distal end and said proximal end; and
a redirecting tip positioned at the distal end of one of the lumens and configured to redirect at least a portion of the blood flow exiting said lumen in a direction generally opposite of the direction of flow.
-
-
2. A multilumen catheter for directing the flow of blood through a patient through a single cannulation site, said catheter comprising:
-
a catheter having a proximal end, a first distal end, and a second distal end, said first distal end extending distally farther from the proximal end than the second distal end;
a first lumen extending between said first distal end and said proximal end;
a second lumen extending between said second distal end and said proximal end;
means for redirecting at least a portion of the blood flow exiting said lumen in a direction generally opposite of the direction of flow. - View Dependent Claims (3, 4)
-
-
5. A multilumen catheter for directing the flow of blood through a patient through a single cannulation site, said catheter comprising:
-
a catheter having a proximal end, a first distal end, and a second distal end, said first distal end extending distally farther from the proximal end than the second distal end;
a first lumen extending between said first distal end and said proximal end; and
a second lumen extending between said second distal end and said proximal end. - View Dependent Claims (6, 7, 8, 9)
-
-
10. An extracardiac pumping system for supplementing blood circulation through a patient without any component thereof being connected to the patient'"'"'s heart, the extracardiac system comprising:
-
a multilumen catheter having at least two lumens therethrough, each lumen having a distal end configured for insertion into the patient'"'"'s vasculature and a proximal end, at least two of said lumens being in fluid communication with each other at their proximal end; and
a pump secured within one of the lumens and configured to pump blood through the patient at subcardiac volumetric rates, the pump having an average flow rate that, during normal operation thereof, is substantially below that of the patient'"'"'s heart when healthy;
whereby the pump may be operated to pump blood from one location in the patient'"'"'s vasculature to a different location in the vasculature while the proximal end of each lumen resides outside the patient'"'"'s body. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
Specification