Automatic ankle brachial pressure index system
US8439843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2007 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jun 27, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02241
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ABPI measurement system includes two cuffs for each ankle and two cuffs for each arm of a patient. Each cuff has chambers. The four cuffs are applied to each limb (or finger or toe), each chamber is inflated simultaneously to a pressure until a Pneumo Arterial Plethysmography (PAPG) signal related to the arterial flow in the limb is detected at the chambers. The chambers are then simultaneously inflated until the PAPG signals are extinguished in each limb, the inflation of chambers continuing for 10 mmHg to 20 mmHg above that pressure. The chambers are then deflated and the pressure at which the PAPG signal returns in the first chamber is recorded for each limb and this value of the pressure is used to calculate the ABPI. The ABPI is displayed or sent to a remote site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.