Gradient sequential compression system and method for reducing the occurrence of deep vein thrombosis
US5575762A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1994 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Apr 5, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2205/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gradient sequential compression system for preventing deep vein thrombosis includes a pressure-based system controller for controlling transfers of air from a source of pressurized air to inflatable chambers of a limb sleeve, so that a prophylactic modality is provided to the limb. The controller also includes a plurality of feeder valves pneumatically connected to each of the chambers and a microprocessor-based control unit for opening only one of the feeder valves at a time during an inflation cycle, so that each of the chambers can be independently inflated to predetermined pressure levels. The control unit also regulates the pressures in each of the chambers at the respective pressure levels by repeatedly measuring the pressures and adjusting the pressure levels, if necessary. The predetermined pressure levels can also be selected by a user or health care professional. In addition, the system controller can be programmed into a variety of modes for one or two-limb operation or for handling sleeves of varying length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.