Percutaneous heart pump
First Claim
Patent Images
1. A heart pump comprising:
- a catheter body comprising a proximal end, a distal end, and an elongate body extending therebetween;
an impeller coupled with the distal end of the catheter body and comprising an axial lumen passing through a distal end of the impeller, the impeller comprising a blade; and
a tip positioned distal of the blade of the impeller, the tip comprising a resealable member having a resealable path therethrough,wherein the tip further comprises a non-resealable portion having a non-resealable path therethrough, the non-resealable path has a proximal end disposed distal of the blade of the impeller and of the resealable path, the proximal end of the non-resealable path having a circumference disposed around the axis of rotation of the impeller that is smaller than a circumference of the resealable member disposed around the axis of rotation of the impeller, wherein a distal surface of the non-resealable portion tapers distally and inwardly towards the axial lumen, wherein a distal-most end of the distal surface defines an access port to receive a guidewire, and wherein the non-resealable path is adapted to direct the guidewire through the impeller.
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Accused Products
Abstract
Disclosed herein are heart pumps that can include a catheter body and an impeller coupled with a distal end of the catheter body. The impeller can include a tip that is resealable or that includes a resealable member. The heart pump can also include a diffuser disposed between the distal end of the catheter body and the impeller, wherein the diffuser includes a flow directing surface.
418 Citations
26 Claims
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1. A heart pump comprising:
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a catheter body comprising a proximal end, a distal end, and an elongate body extending therebetween; an impeller coupled with the distal end of the catheter body and comprising an axial lumen passing through a distal end of the impeller, the impeller comprising a blade; and a tip positioned distal of the blade of the impeller, the tip comprising a resealable member having a resealable path therethrough, wherein the tip further comprises a non-resealable portion having a non-resealable path therethrough, the non-resealable path has a proximal end disposed distal of the blade of the impeller and of the resealable path, the proximal end of the non-resealable path having a circumference disposed around the axis of rotation of the impeller that is smaller than a circumference of the resealable member disposed around the axis of rotation of the impeller, wherein a distal surface of the non-resealable portion tapers distally and inwardly towards the axial lumen, wherein a distal-most end of the distal surface defines an access port to receive a guidewire, and wherein the non-resealable path is adapted to direct the guidewire through the impeller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A heart pump comprising:
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a catheter body comprising a proximal end, a distal end, and an elongate body extending therebetween; an impeller coupled with the distal end of the catheter body and comprising a lumen passing through a distal end of the impeller, the impeller comprising a blade; and a tip positioned distal of the blade of the impeller, the tip comprising; a seal; and an enclosure having a distal surface and enclosing a volume within which the seal is disposed, the enclosure having a circumferential wall surrounding an access port defined by a distal-most end of the distal surface, the distal surface of the enclosure tapering distally and inwardly towards the lumen, the tip comprising a resealable member having a resealable path therethrough and a non-resealable portion having a non-resealable path therethrough, the non-resealable path having a proximal end disposed distal of the blade of the impeller and of the resealable path, the proximal end of the non-resealable path having a circumference disposed around the axis of rotation of the impeller that is smaller than a circumference of the resealable member disposed around the axis of rotation of the impeller, wherein the seal is accessible through the access port and, when open, is configured to connect the access port with the lumen, and wherein the access port is adapted to direct the guidewire to the lumen of the impeller through the seal. - View Dependent Claims (24, 25, 26)
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Specification