Abstract: A repeat prescription ordering system for allowing patients requiring resupply of medication or medical products to access a server using a portable communications and data processing device such as a smart phone or personal digital assistant. The server supplies to the patient a list of medication and medical products which they are authorized to order. The patient can select the products required, and the order is logged by the server and allocated to a supplier for completion of the order. The server maintains an estimate of the amount of medication or medical product held by the patient, this being based on the prescribed dosage regimen and information entered by the patient on their usage and, optionally, on checks on their own health. The patient may be alerted when the estimate indicates that their supplies are running low. The estimate is allowed to go below zero, this implying a possible departure from the prescribed medication regimen.

Abstract: A method and apparatus for locating a feature in a photoplethysmograph or blood pressure signal, comprising a series of signal complexes each having a principal peak (or equivalent trough), is disclosed. The signal is processed to identify a reference point on the upslope of a principal peak. The signal is then searched for the feature in the vicinity of the reference point.