公开(公告)号：US10856804B2

公开(公告)日：2020-12-08

申请号：US16026760

申请日：2018-07-03

Applicant: HeartWare, Inc.

Inventor： Neil Voskoboynikov ,  Veronica Ramos

IPC: A61M1/12 ,  A61B5/00 ,  A61M1/10 ,  A61B5/02 ,  A61B5/024

Abstract: A method determining adverse events from operation of an implantable blood pump including calculating a moving average convergence divergence (MACD) based on power consumed by the implantable blood pump to maintain a constant rotational speed of an impeller of the implantable blood pump. An alert is generated when the calculated MACD diverges from a predetermined MACD threshold and a predetermined MACD zero-crossing time threshold.

公开(公告)号：US12102814B2

公开(公告)日：2024-10-01

申请号：US17193548

申请日：2021-03-05

Applicant: HeartWare, Inc.

Inventor： Michael C. Brown ,  Veronica Ramos ,  Neil Voskoboynikov

IPC: A61M60/122 ,  A61B5/0215 ,  A61M5/142 ,  A61M60/126 ,  A61M60/538 ,  A61M60/585 ,  A61M60/592 ,  A61B5/00

CPC classification number: A61M60/538 ,  A61M5/1428 ,  A61M60/126 ,  A61M60/585 ,  A61M60/592 ,  A61B5/0031 ,  A61B5/0215 ,  A61B5/686 ,  A61M2205/3334

Abstract: A method of determining a presence of suction in a patient having an implantable blood pump from down-sampled log files. The method comprising calculating a waveform index for each of a plurality of flow rate data points from the down-sampled log files. The calculated waveform index is compared with a predetermined waveform index threshold. A non-suction trough baseline is calculated from the plurality of flow rate data points. A difference between a measured trough and a calculated non-suction trough baseline is compared with a predetermined threshold. The presence of suction for each of the plurality of flow rate data points is determined if the calculated waveform index is greater than the predetermined waveform index threshold and the difference between the measured trough and a calculated non-suction trough baseline is greater than the predetermined threshold.

公开(公告)号：US20210321881A1

公开(公告)日：2021-10-21

申请号：US17193548

申请日：2021-03-05

Applicant: HeartWare, Inc.

Inventor： Michael C. Brown ,  Veronica Ramos ,  Neil Voskoboynikov

IPC: A61B5/0215 ,  A61M60/126 ,  A61B5/00 ,  A61M5/142

Abstract: A method of determining a presence of suction in a patient having an implantable blood pump from down-sampled log files. The method comprising calculating a waveform index for each of a plurality of flow rate data points from the down-sampled log files. The calculated waveform index is compared with a predetermined waveform index threshold. A non-suction trough baseline is calculated from the plurality of flow rate data points. A difference between a measured trough and a calculated non-suction trough baseline is compared with a predetermined threshold. The presence of suction for each of the plurality of flow rate data points is determined if the calculated waveform index is greater than the predetermined waveform index threshold and the difference between the measured trough and a calculated non-suction trough baseline is greater than the predetermined threshold.

公开(公告)号：US11413445B2

公开(公告)日：2022-08-16

申请号：US16809731

申请日：2020-03-05

Applicant: HeartWare, Inc.

Inventor： Michael Brown ,  Amy B. Cheng ,  Veronica Ramos ,  Neethu Lekshmi Vasudevan Jalaja ,  Alonso Trejo-Mora

IPC: A61M60/546 ,  A61M60/232 ,  A61M60/178 ,  A61M60/50 ,  A61M60/148 ,  A61M60/562

Abstract: A method of predicting an adverse event in a patient having an implantable blood pump including correlating a pulsatility value to a flow trough value associated with the blood pump to determine a flow peak value; dividing the determined flow peak value by a pump current to determine a pulsatility peak value; tracking a first moving average of the pulsatility peak value, the first moving average defining a threshold range; tracking a second moving average of the pulsatility peak value, the second moving average being faster than the first moving average; and generating an alert when the second moving average deviates from the threshold range.

公开(公告)号：US20210379361A1

公开(公告)日：2021-12-09

申请号：US17405553

申请日：2021-08-18

Applicant: HeartWare, Inc.

Inventor： Veronica Ramos ,  Neethu Lekshmi Vasudevan Jalaja ,  Michael Brown

IPC: A61M60/546 ,  A61M60/232 ,  A61M60/178 ,  G16H50/70 ,  G16H40/67 ,  G16H50/30 ,  G05B23/02

Abstract: A method of predicting an adverse event in a patient having an implantable blood pump including correlating a pulsatility value to a flow trough value associated with the blood pump to determine a flow peak value; dividing the determined flow peak value by a pump current to determine a pulsatility peak value; tracking a first moving average of the pulsatility peak value, the first moving average defining a threshold range; tracking a second moving average of the pulsatility peak value, the second moving average being faster than the first moving average; and generating an alert when the second moving average deviates from the threshold range.

公开(公告)号：US10561774B2

公开(公告)日：2020-02-18

申请号：US15648735

申请日：2017-07-13

Applicant: HeartWare, Inc.

Inventor： Neil Voskoboynikov ,  Pedro E. Grave De Peralta ,  Veronica Ramos

IPC: A61M1/12 ,  A61M1/10

Abstract: A method of detecting a disruption in a diurnal rhythm of a patient having an implantable blood pump comprising calculating a moving average convergence divergence (MACD) based on power consumed by the implantable blood pump to maintain a constant rotational speed of an impeller of the implantable blood pump and generating an alert when the calculated MACD does not cross a MACD zero line for a predetermined MACD zero line crossing time threshold.