Non-blood contacting mechanical device that improves heart function after injury
US11752321B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2020 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Oct 14, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M60/538
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and device are provided for non-blood contact mechanically assisting an injured (e.g., infarcted) ventricle by coupling an inflatable bladder or other volume adjustable device to the injured ventricle and selectively inflating the bladder or increasing the size of the volume in systole to apply force against the injured ventricle and deflating the bladder or reducing the size of the volume in diastole to remove force against the injured ventricle. When no mechanical assistance is being provided to the injured ventricle, the inflatable bladder or volume adjustable device is preferably maintained at a predetermined pressure so as to selectively stiffen the injured tissue and alter ventricular geometry a desired amount. The method is implemented by a mechanical assist device including the volume adjustable device, a coupling means that couples the volume adjustable device to the injured ventricle, a pulsatile device that selectively increases and decreases the volume of the volume adjustable device, and a controller responsive to the pace of the heart and adapted to selectively change the size of the volume adjusting device in different modes of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.