Long term ambulatory intra-aortic balloon pump
First Claim
1. A long-term ambulatory intra-aortic balloon pump system for providing left ventricular cardiac assistance to a patient comprising:
- an external drive system for supplying a compressed fluid, the drive system operating in accordance with a control program stored in memory; and
an intra-luminal balloon pump having at least two elongate inflatable chambers, the intra-luminal balloon pump positionable to be lying completely within a descending aorta of the patient, the at least two elongate inflatable chambers connectible in fluid communication for simultaneously inflating and deflating the at least two elongate chambers synchronously with a heartbeat of the patient in accordance with the control program stored in memory of the external drive system,wherein the at least two elongate inflatable chambers are configured in series along a conduit with adjacent elongate inflatable chambers longitudinally interposed with a flexible conduit link, the configuration allowing individual chambers to align relationship with along a local longitudinal axis of a corresponding local segment of surrounding aortic lumen in a non-planar, non-uniform radius of curvature relationship, andwherein the elongate inflatable chambers are individually sized such that an inflated chamber does not increase a cross-section of the local segment of surrounding aorta.
1 Assignment
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Accused Products
Abstract
A long term intra-aortic balloon pump (LTIABP) includes an enlarged pumping chamber on the order of 50 cc to 65 cc, inclusive. The pumping chamber is an intra luminal, large volume, long term balloon pump. The balloon pump can include tapered longitudinal ends and/or be segmented into a plurality of pumping chamber segments, each pumping chamber subsegment separated by a flexible power conduit link, where the diameter of the pumping chamber subsegments are independent of one another such as decreasing in size as the subsegments are further from the heart to accommodate the decreasing diameter of the aorta. The LTIABP can be used with any skin connector, or can be used with a percutaneous access device (PAD). The PAD can be sized and shaped to be surgically implanted in any desired location of the patient corresponding to the particular entry selected for implantation of a temporary IABP or LTIABP.
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Citations
24 Claims
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1. A long-term ambulatory intra-aortic balloon pump system for providing left ventricular cardiac assistance to a patient comprising:
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an external drive system for supplying a compressed fluid, the drive system operating in accordance with a control program stored in memory; and an intra-luminal balloon pump having at least two elongate inflatable chambers, the intra-luminal balloon pump positionable to be lying completely within a descending aorta of the patient, the at least two elongate inflatable chambers connectible in fluid communication for simultaneously inflating and deflating the at least two elongate chambers synchronously with a heartbeat of the patient in accordance with the control program stored in memory of the external drive system, wherein the at least two elongate inflatable chambers are configured in series along a conduit with adjacent elongate inflatable chambers longitudinally interposed with a flexible conduit link, the configuration allowing individual chambers to align relationship with along a local longitudinal axis of a corresponding local segment of surrounding aortic lumen in a non-planar, non-uniform radius of curvature relationship, and wherein the elongate inflatable chambers are individually sized such that an inflated chamber does not increase a cross-section of the local segment of surrounding aorta. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. In a long-term ambulatory intra-aortic balloon pump system for providing left ventricular cardiac assistance to a patient, the improvement comprising:
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an intra-luminal balloon pump having a plurality of elongate inflatable chambers, the intra-luminal balloon pump positionable to be lying completely within a descending aorta of the patient and interconnected by a common fluid supply line for simultaneously inflating and deflating the plurality of elongate chambers synchronously with respect to a heartbeat of the patient, wherein adjacent elongate chambers are interposed with a flexible conduit link and separately and individually alignable with discrete local segments of surrounding aortic lumen in a non-linear relationship with respect to one another, and wherein the plurality of elongate inflatable chambers are individually sized such that an inflated chamber does not increase a cross-section of the associated segment of surrounding aorta lumen. - View Dependent Claims (14, 15, 16, 17)
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18. A long-term ambulatory intra-aortic balloon pump system for providing left ventricular cardiac assistance to a patient comprising:
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an external drive system for supplying a compressed fluid, the drive system operating in accordance with a control program stored in memory; a percutaneous access device implantable with respect to a patient for connecting in fluid communication with the compressed fluid to be supplied by the external drive system, the percutaneous access device having an enlarged implantable flange portion with a reduced dimension neck portion extending outwardly to a location external of the patient for supporting a fitting for releasably connecting the compressed fluid supplied by the external drive system; and an intra-luminal balloon pump having at least two elongate inflatable chambers, the intra-luminal balloon pump positionable to be lying completely within a descending aorta of the patient, the at least two elongate inflatable chambers connectible in fluid communication with the percutaneous access device for simultaneously inflating and deflating each chamber synchronously with a heartbeat of the patient in accordance with the control program stored in memory of the external drive system, wherein the at least two elongate inflatable chambers are configured in series along a conduit with adjacent chambers longitudinally interposed with a flexible conduit link, the configuration allowing individual chambers to align along a local longitudinal axis of a corresponding local segment of surrounding aortic lumen in a non-planar, non-uniform radius of curvature relationship with respect to one another, and wherein the elongate inflatable chambers are individually sized such that an inflated chamber does not increase a cross-section of the associated segment of surrounding aorta lumen. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification