Catheter malfunction determinations using physiologic pressure
US8323244B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2007 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jul 6, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0464
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and systems for determining whether an implanted catheter used to deliver fluids to a selected internal delivery site is malfunctioning. The malfunctions may include that the infusion section of the catheter is not located at or has migrated away from the selected internal delivery site, is leaking, is blocked, etc. The determination is made by analyzing the pressure modulation of fluid within the catheter and determining whether the pressure of the fluid in the catheter is modulated by physiologic pressure changes experienced at the selected internal delivery site. The physiologic pressure modulations at the selected internal delivery site may be caused by, e.g., cardiac activity, respiration, changes in patient's posture, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.