Mechanical pump for removal of fragmented matter and methods of manufacture and use
First Claim
1. A mechanical pump for use in a medical device comprising:
- an elongate hollow, flexible inner tube having a proximal end, a distal end, and a central lumen;
a first coiled rotor element having a distal end and a proximal end disposed over an outer surface of the inner tube; and
a jacket securing the coiled rotor element to the outer surface of the inner tube;
wherein a distal portion of the coiled rotor is unattached to the inner tube to provide a whip element as the pump is rotated.
7 Assignments
0 Petitions
Accused Products
Abstract
Material transport catheters and methods for their use rely on rotation of an impeller within a catheter body and a clearing element for preventing buildup of materials at the opening of the catheter body. The impeller preferably comprises an inner tube or shaft having a helical rotor formed over an outer surface thereof. The clearing element may comprise a free end of a structure near the distal end of the catheter body for disrupting clot, wherein the free end of the structure extends into the distal opening of the catheter body to break up materials as the impeller is rotated. Alternatively, the clearing element may comprise a cutting member disposed at the distal opening of the catheter body.
210 Citations
8 Claims
-
1. A mechanical pump for use in a medical device comprising:
-
an elongate hollow, flexible inner tube having a proximal end, a distal end, and a central lumen; a first coiled rotor element having a distal end and a proximal end disposed over an outer surface of the inner tube; and a jacket securing the coiled rotor element to the outer surface of the inner tube; wherein a distal portion of the coiled rotor is unattached to the inner tube to provide a whip element as the pump is rotated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification