Remote pulmonary function tester
US4296756A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1979 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Jul 26, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/904
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A remote pulmonary function tester uses a microcomputer to receive patient identification data, direct the test sequence, store several FEV maneuvers, and then transmit the stored data in a digital format to a central computer. The central computer plots a flow volume curve, computes FEV, FEF.sub.25-75% etc., compares these values with normals, and performs a preliminary disease categorization. The pulmonary function tester comprises a flow to pressure transducer, producing an analog signal, an analog to digital converter for digitizing the analog signal, a touch tone keyboard for simple patient identification data entry, and a microcomputer system having a read/write storage for storage of test and patient identification data, communication interface for connection to a central computer through telephone lines, and a read only memory and a central processing unit for control of the tester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.