ABSTRACT Introduction: Physical rehabilitation can be benefitted from the use of devices, which are usually patented. The United States Patent and Trademark Office (USPTO) is one of the largest and most recognized patent and trademark offices. The characteristics and evolution of patents for physical rehabilitation is of great interest; however, there are few studies in this respect. Objective: To identify the characteristics of patents of physical rehabilitation devices for the physical rehabilitation of damaged limbs registered the United States Patent and Trademark Office. Material and methods: A cross-sectional descriptive study was conducted. A search was made at UPSTO using a list of keywords related to rehabilitation. Ten groups of patents related to rehabilitation were chosen. The variables studied were: patent number, publication date, country, holder, patent area, limbs for whi...

Introducción: La rehabilitación física puede verse beneficiada con el uso de dispositivos, los cuales en su mayoría suelen ser patentados. La oficina de patentes y marcas de los Estados Unidos (USPTO) es una de las oficinas de patentes y marcas más grandes y reconocidas. Resulta de interés evaluar las características y la evolución de las patentes para la rehabilitación física; sin embargo, existen pocos estudios al respecto. Objetivo: Identificar las características de las patentes de dispositivos de rehabilitación física de extremidades, registradas en la oficina de patentes y marcas de los Estados Unidos.

Background/aims Conjunctival squamous cell carcinoma (CSCC) is the most frequent malignant tumour of the conjunctiva, with scarce recurrence and infrequent metastasis. The purpose of this study is to describe the clinical and pathological characteristics of this neoplasm and to identify the prognostic factors for recurrence and metastasis in a cancer hospital in Peru. Materials and method A longitudinal, retrospective study of 176 consecutive patients diagnosed with SCC of the conjunctiva. Sociodemographic and clinical characteristics were evaluated. In addition, Kaplan-Meier curves were performed, and Cox regression was used to determine prognostic factors for recurrence and metastasis over time. Result Only 12.5% presented tumour size ≤5 mm. The highest proportion according to the histopathological type was the well-differentiated infiltrative forms (40.9%), and according to tumour, ...