Forceps Pressure Algometer Based on Load Cell

Researchers studying the pain experience agree it is a complex phenomenon. In this field, it is necessary to describe, understand and measure the pain experience in order to advance in diagnosis and treatment of patients. Pain quantification can be performed through an instrument called algometer. One of the many parameters it measures is the Pressure Pain Threshold (PPT). This parameter is defined as the point at which a mechanical stimulus becomes painful. In this paper, we present a pressure algometer using calibrated forceps to animal models applications. It requires little training for handling and precise control of the force angle is not necessary. We employed a load cell as the system force transducer. Characterization experiments were performed. Results show us the algometer has satisfactory reproducibility, mensuration linearity, potential for temperature and noise insensitivity, and intraobserver repeatability.