Ventilatory assist system and methods to improve respiratory function
US7962215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2007 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Feb 6, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0551
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods are provided to improve respiratory function. Systems include an external electrical stimulator coupled to electrodes that stimulates diaphragm contraction and may optionally include a positive pressure mechanical ventilator. The system further includes an electrode suitable for temporary implantation. Electrical stimulation is provided to specific portions of the diaphragm, such as one hemidiaphragm preferentially over another. By preferentially contracting one hemidiaphragm, a specific portion of a lung may be expanded, such as a posterior portion. By the provision of the negative intrathoracic pressure from diaphragm contraction, greater expansion of specific portion of lung is achieved in relationship to air pressure within the lung, thereby improving compliance. Supplementation of stimulated diaphragm contraction with positive pressure driven air flow from a PPMV directs the air flow to specific portions of the lung. Such portion may include a posterior portion of a lung, and may cause a clearing of atelectasis in that portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.