WHO technical specifications: cryosurgical equipment for the treatment of precancerous cervical lesions and prevention of cervical cancer

Overview

Cryosurgery is appropriate for use in low resource settings because it is effective (>90% cure rate), has limited side-effects, does not require electricity, is inexpensive compared to other treatment options, and is technically simple to implement. The results of long term trials demonstrating the effectiveness of “screen and treat”, or VIA  (visual inspection with acetic acid) and cryosurgical interventions, has prompted health care providers in middle- and low-income countries to scale up national programmes incorporating this approach.

This document seeks to assist programme managers, purchasing managers, and other interested parties with the procurement, management and effective use of cryosurgical equipment to treat precancerous cervical lesions as part of a comprehensive cervical cancer prevention programme.

It provides an overview of the procurement and performance issues associated with some cryosurgical devices, gas supplies and gas cylinders, and necessary connectors. The document offers technical specifications for purchasers, including the design and performance recommendations necessary to ensure the safety and efficacy of cryosurgical equipment, issues related to the gases used by the equipment, and guidance on how to procure both the equipment and the gases. Annexes provide additional useful information.