Pain measurement system and method of measuring pain
US7399281B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Jul 10, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4824
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pain measurement system is capable of accurately and reliably measuring the magnitude of temporary pain in a patient while reducing burdens on the patient during pain measurement. The pain measurement system has a system assembly including a controller that controls an electric stimulus signal output unit to apply a pulse current which increases with time through an electrode. The value of the pulse current is recognized as a minimum sensed current value when a first signal is received. The electric stimulus signal output unit is then controlled to apply, through the electrode, a pulse current having a current value which increases from a predetermined initial value stepwise by nX (where X represents the minimum sensed current value and n represents a positive rational number). The current value of the pulse current is recognized as a pain-commensurate current value when a second signal is received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.