Implantable medication infusion pump including self-contained acoustic fault detection apparatus
US5328460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1993 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Jun 11, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus located in an implantable medication infusion pump for quickly and easily detecting a condition adversely affecting medication delivery in the implantable medication infusion pump is disclosed which can reliably detect occurrences including an occluded catheter, the presence of air in the pumping mechanism, and the failure of the pumping mechanism. The system uses the amplitude of an acoustic signal generated by operation of the pumping mechanism as compared with a baseline signal to detect an encapsulated or occluded catheter or air in the fluid line. In addition, the system can detect a partially encapsulated or occluded catheter by detecting repeated downward slope patterns during repetitive, closely spaced pumping cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.