Method and system for sizing a patient interface

A method for selecting a patient interface for a patient for use with a respiratory therapy device, the patient interface suitable to deliver respiratory therapy to the patient, comprising the steps of:

• determining a dimension of a facial feature required in order to select a patient interface for a patient;
• determining a desired orientation of a face of the patient, relative to an image-capture device, to be captured in a digital image, in order to determine the dimension of the required facial feature;
• providing guidance to position the face of the patient and the image-capture device in the desired orientation relative to each other for image capture;
• receiving image capture data representing at least one digital image of a face of the patient, the image capture data representing the face of the patient orientated in the desired orientation relative to the image-capture device;
• calculating the dimension for the facial feature from the image capture data;
• and, using the dimension to select the patient interface for the patient.

A system for selecting a patient interface for a patient for use with a respiratory therapy device, the patient interface suitable to deliver respiratory therapy to the patient, the system being configured to perform the steps of:

• determining a dimension of a facial feature required in order to select a patient interface for a patient;
• determining a desired orientation of a face of the patient, relative to an image-capture device, to be captured in a digital image, in order to determine the dimension of the required facial feature;
• providing guidance to position the face of the patient and the image-capture device in the desired orientation relative to each other for image capture;
• receiving image capture data representing at least one digital image of the face of the patient, the image capture data representing the face of the patient orientated in the desired orientation relative to the image-capture device;
• calculating the dimension for the facial feature from the image capture data;
• and, using the dimension to select the patient interface for the patient.