Catheter pump
First Claim
1. A catheter assembly for a heart pump, comprisinga flexible catheter body having a proximal end and a distal end and defining a plurality of lumens therethrough, the catheter body being sufficiently flexible to extend from a peripheral access to a patient'"'"'s heart;
- an impeller assembly having an impeller and a housing comprising a hypotube sized to be disposed over a distal portion of the catheter body, the hypotube having at least one barb disposed distally such that the barb engages a portion of the catheter assembly disposed inward of the hypotube when tensile forces are applied to opposite ends of the catheter assembly, to enhance the security of the connection between the catheter body and the impeller assembly under such tensile forces.
5 Assignments
0 Petitions
Accused Products
Abstract
A heart pump and a catheter assembly therefor are provided that include a flexible catheter body having a proximal end and a distal end, the catheter body having a plurality of lumens therethrough. The catheter body can be sufficiently flexible to extend from a peripheral access to a patient'"'"'s heart. The catheter assembly can also include an impeller assembly having an impeller and a housing. The impeller assembly can be coupled with the flexible catheter body such that a tensile force applied to opposite ends of the catheter assembly enhances the security of the connection between the catheter body and the impeller assembly.
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Citations
43 Claims
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1. A catheter assembly for a heart pump, comprising
a flexible catheter body having a proximal end and a distal end and defining a plurality of lumens therethrough, the catheter body being sufficiently flexible to extend from a peripheral access to a patient'"'"'s heart; an impeller assembly having an impeller and a housing comprising a hypotube sized to be disposed over a distal portion of the catheter body, the hypotube having at least one barb disposed distally such that the barb engages a portion of the catheter assembly disposed inward of the hypotube when tensile forces are applied to opposite ends of the catheter assembly, to enhance the security of the connection between the catheter body and the impeller assembly under such tensile forces. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A catheter for a heart pump, comprising
a flexible catheter body having a proximal end and a distal end and defining a plurality of lumens configured to convey an infusant therethrough, the catheter body being sufficiently flexible to extend from a peripheral access to a patient'"'"'s heart; -
an impeller having a shaft and at least one blade; a bearing housing in which the shaft is journaled for rotation; and a coupler having a distal end configured to be coupled with the bearing housing and a proximal end configured to be coupled with the catheter body, the proximal end being disposed proximal of the distal end of the lumens of the catheter body; wherein the catheter assembly is configured such that a first portion of the infusant flows from a distal port in a distal direction over the impeller shaft and a second portion of the infusant flows from the distal port in a proximal direction over the impeller shaft. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A heart pump configured to be applied percutaneously, comprising:
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a catheter assembly comprising a proximal end, a distal end, and an elongate body extending therebetween, the elongate body having a drive lumen extending therethrough; an impeller assembly comprising an impeller shaft and an impeller disposed on the impeller shaft; and a drive shaft disposed in the drive lumen, the drive shaft having a plurality of layers; wherein the drive shaft comprises first and second coil wire lavers wound in opposite directions. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A heart pump comprising
a catheter assembly comprising a proximal end, a distal end, and an elongate body extending therebetween; -
an impeller assembly coupled with the elongate body and comprising an impeller shaft and an impeller disposed on the impeller shaft; a bearing disposed between the proximal end of the impeller shaft and the distal end of the catheter assembly; and an infusant inflow port disposed distal of the bearing and configured to direct infusant radially inwardly toward the impeller shaft. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A catheter assembly for a heart pump, comprising:
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a flexible catheter body having a proximal portion and a distal portion and defining one or more lumens therethrough, the catheter body having a central longitudinal axis and being configured to extend from a peripheral access to a patient'"'"'s heart; and an impeller assembly having an impeller and a housing in which the impeller is disposed, wherein the distal portion of the catheter body and a proximal portion of the impeller assembly are joined along a length, the distal portion of the catheter body being disposed between an overlying member of the catheter assembly and the central longitudinal axis, wherein the distal portion of the catheter body is mechanically engaged with the overlying member by a projection of one of the catheter body and the overlying member into the other of the catheter body and the overlying member. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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Specification