Device for checking a position orientation in accordance with the use of a cap (17) in a syringe or carpule syringe, with - a fastener for fixing a hollow body (15) of the syringe or syringe carpule; - a measuring head (5) crossed by at least one channel (11), the channel (11) being configured so that it can be brought to a fluid joint with a first opening (21) of the hollow body (15) in which - a plug (17) is inserted in a second opening (25) of the hollow body (15); - a pressure sensor 10 (3) that is in fluid connection with the channel (11) of the measuring head (5), and with - a pressure source (37) that is configured so that it can be brought to a joint fluid with the first opening (21) of the hollow body (15), characterized by - a control device that is configured to record a pressure attached to the pressure sensor (3) during an introduction of a predetermined volume of a medium into the first opening (21) of the hollow body (15), in which - the control device is configured to compare the recorded pressure with a theoretical value, and in which - the control device is configured to mark the hollow body (15 ) as a piece rejected based on the comparison.Dispositivo para comprobar una orientación de posición de acuerdo con el uso de un tapón (17) en una jeringa o jeringa carpule, con - un elemento de sujeción para fijar un cuerpo hueco (15) de la jeringa o jeringa carpule; - un cabezal (5) de medición atravesado por al menos un canal (11), estando configurado el canal (11) de manera que pueda llevarse a una unión fluida con una primera abertura (21) del cuerpo hueco (15) en el que - un tapón (17) está introducido en una segunda abertura (25) del cuerpo hueco (15); - un captador de presión 10 (3) que se encuentra en unión fluida con el canal (11) del cabezal de medición (5), y con - una fuente de presión (37) que está configurada de manera que puede llevarse a una unión fluida con la primera abertura (21) del cuerpo hueco (15), caracterizado por - un dispositivo