Rotatable infusion set

摘要

An arrangement for introducing a liquid into the body of a patient or for withdrawing a liquid from the body of a patient, including a first structural part carrying a cannula for positioning in the body of the patient, and a second structural part with a connection port for detachably coupling a conduit for supplying or withdrawing a liquid, wherein the first and second structural parts are connected, can be rotated relative to each another and in relative rotational positions form a channel for introducing a liquid from the conduit to the cannula or for withdrawing a liquid from the cannula to the conduit, and whereby movement of the conduit for coupling and uncoupling is transverse to the longitudinal axis of the cannula.

主权项

1. An arrangement for introducing a liquid to the body of a patient or for withdrawing a liquid from the body of a patient, comprising:
a connector of a conduit for supplying or withdrawing liquid, the conduit coupled to a delivery cannula; a first structural part with a cannula protruding therefrom for arrangement in the body of the patient, the first structural part formed by a circular plate element and a central body; and a second structural part with a spring-elastic latching arm coupled to a connection port for detachable coupling of the connector; wherein the first structural part and the second structural part are configured and connected to one another such that they can be rotated relative to one another and in every relative position form a channel for introducing a liquid from the connection port to the cannula or for withdrawing a liquid from the cannula to the connection port, and wherein the conduit and the cannula are connected by the channel beginning at a distal end of the conduit and ending at a proximal end of the cannula; wherein: the connection port is designed such that the coupling and uncoupling of the connector associated with the conduit takes place in a direction transverse to the longitudinal axis of the cannula, and wherein the channel extends from an end of the delivery cannula which is farthest from the conduit, extending in the direction transverse to the longitudinal axis of the cannula to provide a liquid-tight connection between the cannula and the end of the delivery cannula which are separated in the direction transverse to the longitudinal axis of the cannula; and the connector comprises opposing retaining arms configured such that when the connector is set on the connection port, the retaining arms catch behind opposing stop cams which comprise projections extending up from the second structural part to substantially prevent unintentional uncoupling of the connector, and the connector prevents the latching arm from deviating upward and the first and the second structural parts are latched in a position; and the spring-elastic latching arm rests on a corrugated surface contour of the plate element to form a ratchet mechanism such that the first structural part and second structural part can be rotated relative to one another when the connector is not set on the connection port.