Low noise finger cot probe
US5337744A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Jul 14, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/18
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A low cost, disposable oximetric sensor including a finger cot probe to facilitate either the transillumination or transreflectance and the detection of optical energy emitted towards a patient's finger without subjecting the finger to deformation. The finger is received within a receptacle having a cup-shaped closed end and an opposite open end that is rolled up upon itself and adapted to be unrolled longitudinally along the finger to form a tubular enclosure in surrounding engagement with the finger. An optical source and an optical detector are arranged in spaced axial alignment with one another at opposite sides of the finger so that optical energy transmitted by the source towards the finger is received by the detector for non-invasively indicating the saturation of oxygen within the patient's blood depending upon the magnitude of the optical energy detected. By virtue of the present invention, decoupling the optical path between the source and detector is minimized in the event that the patient moves his finger during testing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.