System and method for blockage detection for medication infusion
US7462163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2004 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Nov 7, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/018
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medication infusion system may include a controller and a reservoir module including a reservoir containing medication to be delivered to an internal wound site via the controller. The controller may have a peristaltic pump driven by a motor to urge medication to flow toward the internal wound site, through a conduit. A blockage sensor disables the motor and provides an alarm if the tube is blocked. The blockage sensor detects distention of a preferentially distendable portion of the tube, which may be routed about a constraining member. When blockage occurs, the tube distends preferentially along a direction generally parallel to the radius about which the tube bends. The blockage sensor may include a variety of switching elements, such as a pushbutton switch, a metal ring encircling the tube to make contact between conductors, and/or a metal bridge bendable to make contact between conductors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.