Wearable health devices, as a technological tool, may contribute to the diagnosis and treatment of diseases, besides allowing a remote monitoring of patients and optimizing the use of resources in the health industry. This study proposes an integrative model of technology acceptance to assess the determining factors for the adoption of wearable health devices by users, aligning constructs from the technology acceptance model with other constructs, such as technological readiness, assurance and self-efficacy. The data obtained from the survey questionnaires of 424 consumers, which were analyzed through structural equation modelling, indicate significant relationships between the evaluated constructs. Particular relevance was observed in the effects of perceived usefulness, preceded by assurance and technological readiness, on attitude and intention to use wearable health devices. Therefore, the results of this research suggest that the proposed model represents an advance in the understanding of the factors that influence the general attitude of the population to adopt the use of the technology of wearable health devices.