top of page

Rainbow®

Pulse CO-Oximetry II

Willow’s Rainbow Technology, first launch in 2005 is used in leading hospitals and healthcare settings worldwide, monitors millions of patients each year.  Rainbow technology has been shown in numerous studies to significantly reduce mortality and cost of care.​

Rainbow II Parameters

Rainbow_Parameters.jpg

Rainbow Technology extends conventional pulse oximetry into a comprehensive, noninvasive blood constituent monitoring system. Instead of measuring only oxygen saturation (SpO₂) and pulse rate, it uses multiple additional light wavelengths and proprietary signal processing to continuously assess a broader set of physiological parameters, including total hemoglobin. Rainbow technology enhances patient safety, supports more informed clinical decisions, and reduces the burden of discrete testing across a wide range of care settings.

​

  • Noninvasive & Continuous monitoring

  • Provides multi-parameter data from a single sensor

  • Earlier indications of changes based on trends

  • Faster clinical assessment possibly prompting lifesaving response sooner

Technology Trusted Across Healthcare

Rainbow provides technology trusted by hospitals and doctors in various settings: 

Operating Room

  • Continuous hemoglobin monitoring during surgery

  • Continuous methemoglobin monitoring for notification of methemoglobin poisoning due to any of 40 medications that can be given during surgery

  • Early indication of potential blood loss

  • Fluid management guidance using RPVi, a measure of fluid responsiveness

General Care

  • Continuous hemoglobin monitoring provides one indication of possible blood loss

  • Continuous methemoglobin monitoring, where elevated methemoglobin is a potentially dangerous condition caused by dozens of common drugs

Critical Care & ICU

  • Ongoing monitoring of oxygen delivery and perfusion

  • Fluid management guidance using PVi

Emergency Department

  • Emergency & Pre-hospital Care

  • Rapid identification of carbon monoxide exposure

  • Early indicate of abnormal hemoglobin states

Maternal & Neonatal Care

  • Noninvasive

  • Continuous hemoglobin monitoring provides one indication of possible blood loss

  • Continuous methemoglobin monitoring provides for notification of methemoglobinemia that can arise from Ino therapy

  • General Care

  • Continuous hemoglobin monitoring provides one indication of possible blood loss

  • Continuous methemoglobin monitoring, where elevated methemoglobin is a potentially dangerous condition caused by dozens of common drugs

Emergency Services & First Responders

  • Carbon Monoxide monitoring for smoke victims and fireman

  • Hemoglobin monitoring for any blood loss concern

Rainbow Advantages

Rainbow Technology transforms pulse oximetry from a basic oxygen monitor into a multi-parameter, real-time blood assessment platform. By leveraging multi-wavelength spectroscopy and advanced signal processing, it enhances patient safety, supports more informed clinical decisions, and reduces the burden of invasive testing across a wide range of care settings.

  • Noninvasive & Continuous. Reduces reliance on repeated blood draw and lab tests

  • Provides multi-parameter data from a single sensor

  • Enables earlier intervention based on trending physiologic changes

  • Faster clinical assessment without waiting for lab results

bottom of page