Low-noise optical probes for reducing light piping

US6792300B1 · kind B1 · utility

Assignee

• Masimo Corporation · US

Inventors

• Mohamed K. Diab · Mission Viejo, US
• Esmaiel Kiani-Azarbayjany · Laguna Niguel, US
• David Tobler · Federal Heights, US
• Thomas J. Gerhardt · Berlin, DE
• Eugene Mason · La Habra, US
• Mike Mills · Golden, US

Key dates

• Filing date: Jul 3, 2001
• Grant date: Sep 14, 2004
• Expiry date: May 15, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49826
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An optical probe, which is particularly suited to reduce noise in measurements taken on an easily compressible material, such as a finger, a toe, a forehead, an earlobe, or a lip, measures characteristics of the material. A neonatal and adult disposable embodiment of the probe include adhesive coated surfaces to securely affix the probe onto the patient. In addition, the surface of the probe is specially constructed to minimize light piping effects. Furthermore, a flex circuit acts as a spring to absorb shock which may misalign the emitter and detector. One embodiment of the adult probe includes a cushioning pocket formed for a fingertip to align the probe and to absorb motion of the probe due to contact. The neonatal probe is formed with a unique V-configuration which provides multiple advantages.