Intravascular ventricular assist device
First Claim
1. A method of providing cardiac assistance to a mammalian subject comprising the steps of:
- (a) advancing a pump through a vascular system of the subject until the pump is disposed at an operative position at least partially within an artery of the subject, the pump including;
a housing having a bore a distal portion and a proximal portion, one or more rotors disposed within the bore, and one or more stators disposed outside of the housing;
a stent having a central collar and a plurality of legs being coupled to the collar, the stent being disposed only about the distal portion; and
(b) securing the pump at the operative position by the stent transitioning from a collapsed configuration to an expanded configuration to engage the artery of the subject.
1 Assignment
0 Petitions
Accused Products
Abstract
One aspect of an intravascular ventricular assist device is an implantable blood pump where the pump includes a housing defining a bore having an axis, one or more rotors disposed within the bore, each rotor including a plurality of magnetic poles, and one or more stators surrounding the bore for providing a magnetic field within the bore to induce rotation of each of the one or more rotors. Another aspect of the invention includes methods of providing cardiac assistance to a mammalian subject as, for example, a human. Further aspects of the invention include rotor bodies having helical channels formed longitudinally along the length of the body of the rotor where each helical channel is formed between peripheral support surface areas facing radially outwardly and extending generally in circumferential directions around the rotational axis of the rotor.
70 Citations
10 Claims
-
1. A method of providing cardiac assistance to a mammalian subject comprising the steps of:
-
(a) advancing a pump through a vascular system of the subject until the pump is disposed at an operative position at least partially within an artery of the subject, the pump including; a housing having a bore a distal portion and a proximal portion, one or more rotors disposed within the bore, and one or more stators disposed outside of the housing; a stent having a central collar and a plurality of legs being coupled to the collar, the stent being disposed only about the distal portion; and (b) securing the pump at the operative position by the stent transitioning from a collapsed configuration to an expanded configuration to engage the artery of the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification