JWG 5 - TC 62/SC 62D/JWG 5

This document applies to basic safety and essential performance of cerebral tissue oximeter equipment, that employs light at multiple wavelengths to derive a quantitative measure of oxygen saturation of haemoglobin within the volume of tissue sampled under the probe attached to the head. The cerebral tissue oximeter equipment can be based on continuous light, frequency domain or time domain technologies. This document applies to ME equipment used in a hospital environment as well as when used outside the hospital environment, such as in ambulances and air transport. Additional standards may apply to ME equipment for those environments of use.
NOTE 1 Cerebral tissue oximeters are sometimes referred to as near infrared spectroscopy equipment in medical literature.
Not included within the scope of this document are:
- invasive tissue or vascular oximeters;
- oximeters that require a blood sample from the patient;
- equipment measuring dissolved oxygen;
- ME equipment, or part thereof, that measures path-length-dependent haemoglobin change. The requirements for functional near-infrared spectroscopy equipment are found in ISO 80601-2-71[4];
- ME equipment, or part thereof, that measures arterial saturation based on pulsatile changes in tissue optical properties (SpO2). The requirements for pulse oximeter equipment are found in ISO 80601‑2‑61[3];
- ME equipment, or any part thereof, that claims to monitor tissue in parts of the body other than the head.
This document also applies to cerebral tissue oximeter equipment, including cerebral tissue oximeter monitors, cerebral tissue oximeter probes and probe cable extenders, that have been remanufactured.
If a clause or subclause is specifically intended to be applicable to ME equipment only, or to ME systems only, the title and content of that clause or subclause will say so. If that is not the case, the clause or subclause applies both to ME equipment and to ME systems, as relevant.
Hazards inherent in the intended physiological function of ME equipment or ME systems within the scope of this document are not covered by specific requirements in this document except in 201.11 and in 201.7.2.13 and 201.8.4.1 of the general standard.
NOTE 2 See also 4.2 of the general standard.
This document can also be applied to ME equipment and their accessories used for compensation or alleviation of disease, injury or disability.
This document is not applicable to remote or slave (secondary) equipment that displays StO2 values that are located outside of the patient environment.
NOTE 3 ME equipment that provides selection between diagnostic and monitoring functions is expected to meet the requirements of the appropriate document when configured for that function.

ISO 80601-2-61:2017 applies to the basic safety and essential performance of pulse oximeter equipment intended for use on humans, hereafter referred to as me equipment. This includes any part necessary for normal use, including the pulse oximeter monitor, pulse oximeter probe, and probe cable extender.
These requirements also apply to pulse oximeter equipment, including pulse oximeter monitors, pulse oximeter probes and probe cable extenders, which have been reprocessed.
The intended use of pulse oximeter equipment includes, but is not limited to, the estimation of arterial oxygen haemoglobin saturation and pulse rate of patients in professional healthcare institutions as well as patients in the home healthcare environment and the emergency medical services environment.
ISO 80601-2-61:2017 is not applicable to pulse oximeter equipment intended for use in laboratory research applications nor to oximeters that require a blood sample from the patient.
If a clause or subclause is specifically intended to be applicable to me equipment only, or to me systems only, the title and content of that clause or subclause will say so. If that is not the case, the clause or subclause applies both to me equipment and to me systems, as relevant.
Hazards inherent in the intended physiological function of me equipment or me systems within the scope of this document are not covered by specific requirements in this document except in 201.11 and in 7.2.13 and 8.4.1 of the general standard.
NOTE 1 See also 4.2 of the general standard. "The general standard" is IEC 60601-1:2005+AMD1:2012, Medical electrical equipment ? Part 1: General requirements for basic safety and essential performance.
ISO 80601-2-61:2017 can also be applied to me equipment and their accessories used for compensation or alleviation of disease, injury or disability.
ISO 80601-2-61:2017 is not applicable to pulse oximeter equipment intended solely for foetal use.
ISO 80601-2-61:2017 is not applicable to remote or slave (secondary) equipment that displays SpO2 values that are located outside of the patient environment.
NOTE 2 Me equipment that provides selection between diagnostic and monitoring functions is expected to meet the requirements of the appropriate document when configured for that function.
ISO 80601-2-61:2017 is applicable to pulse oximeter equipment intended for use under extreme or uncontrolled environmental conditions outside the hospital environment or physician's office, such as in ambulances and air transport. Additional standards can apply pulse oximeter equipment for those environments of use.
ISO 80601-2-61:2017 is a particular standard in the IEC 60601-1 and ISO/IEC 80601 series of standards.

IEC 80601-2-71:2015 applies to the basic safety and essential performance of functional NIRS equipment intended to be used by themselves, or as a part of an ME system, for the production of functional NIRS equipment output for adjunctive diagnostic purposes, hereinafter referred to as ME equipment.

ISO 80601-2-61:2011 applies to the basic safety and essential performance of pulse oximeter equipment intended for use on humans, hereafter referred to as ME equipment. This includes any part necessary for normal use, including the pulse oximeter monitor, pulse oximeter probe, and probe cable extender. These requirements also apply to pulse oximeter equipment, including pulse oximeter monitors, pulse oximeter probes and probe cable extenders, which have been reprocessed. The intended use of pulse oximeter equipment includes, but is not limited to, the estimation of arterial oxygen haemoglobin saturation and pulse rate of patients in professional healthcare institutions as well as patients in the home healthcare environment. ISO 80601-2-61:2011 is not applicable to pulse oximeter equipment intended for use in laboratory research applications nor to oximeters that require a blood sample from the patient. ISO 80601-2-61:2011 can also be applied to pulse oximeter equipment and their accessories used for compensation or alleviation of disease, injury or disability. ISO 80601-2-61:2011 is not applicable to pulse oximeter equipment intended solely for foetal use. ISO 80601-2-61:2011 is not applicable to remote or slave (secondary) devices that display SpO2 values that are located outside of the patient environment.