Device and system for delivering a medical fluid and relative delivery method

A system for delivering a medical fluid, the system comprising:

• an administration device for delivering the medical fluid the administration device comprising a body housing:
• at least one containment tank of a medical fluid;
• a fluid injection device which interfaces with the containment tank and is suitable to allow controlled delivery of a fluid through a cannula;
• an extraction device of the cannula movable from a retracted or rest configuration to an extracted or infusion configuration;
• an activator rotatable about a rotation axis in an injection rotation direction and in a control rotation direction, opposite each other, wherein:
• the activator comprises a control shaft configured so that the extraction of the cannula takes place by rotating the control shaft in the injection rotation direction or in the control rotation direction,
• the control shaft is operatively connected to a rotor, to the fluid injection device, and to the extraction device of the cannula, and
• each of the fluid injection and extraction devices is operatively connected to the control shaft by a one-way transmission mechanism, which allows the transmission of motion in one of said rotation directions of the control shaft and prevents transmission of motion in the other direction of rotation, said one-way transmission mechanisms being opposite each other, so that the rotation of the control shaft in the control rotation direction allows the verification of the status of the extraction device of the cannula and the rotation of the control shaft in the injection rotation direction allows the activation of the fluid injection device;
• and
• a portable activation device of the administration device, the portable activation device comprising:
• a control unit for rotating the rotor of the administration device magnetically or by electromagnetic induction, the control unit comprising a controller that, in case of an injection request of the medical fluid, is programmed to:
• control the rotation of the control shaft in the control rotation direction, to check if the cannula has been completely extracted, and
• in case of negative verification indicating non-complete extraction, invert the rotation of the control shaft in the direction of injection rotation, and make a first initialization injection of the cannula to fill the cannula with the medical fluid;
• and
• a relative sensor for detecting the effective rotation of the rotor.

A method of delivering a medical fluid using an administration device for delivering the medical fluid, the administration device comprising a body housing:

• at least one containment tank of a medical fluid;
• a fluid injection device which interfaces with the containment tank and is suitable to allow controlled delivery of a fluid through a cannula;
• an extraction device of the cannula movable from a retracted or rest configuration to an extracted or infusion configuration;
• and
• an activator rotatable about a rotation axis in an injection rotation direction and in a control rotation direction, opposite each other, wherein:
• the activator comprises a control shaft configured so that the extraction of the cannula takes place by rotating the control shaft in the injection rotation direction or in the control rotation direction,
• the control shaft is operatively connected to a rotor, to the fluid injection device, and to the extraction device of the cannula, and
• each of the fluid injection and extraction devices is operatively connected to the control shaft by a one-way transmission mechanism, which allows the transmission of motion in one of said rotation directions of the control shaft and prevents transmission of motion in the other direction of rotation, said one-way transmission mechanisms being opposite each other, so that the rotation of the control shaft in the control rotation direction allows the verification of the status of the extraction device of the cannula and the rotation of the control shaft in the injection rotation direction allows the activation of the fluid injection device, the method comprising, in the case of an injection request of the medical fluid, the steps of:
• checking if the cannula has been extracted by rotation of the control shaft in the control rotation direction,
• in the case of negative verification indicating non-complete extraction of the cannula, inverting the rotation of the control shaft in the injection rotation direction, and making a first initialization injection of the cannula to fill said cannula with fluid, and then perform the injection phase of a predetermined dose by rotating the control shaft in the injection rotation direction, and
• in case of positive verification indicating complete extraction of the cannula, invert the rotation of the control shaft in the injection rotation direction, and inject the medical fluid according to the predetermined dose.

A method of delivering a medical fluid using an administration device for delivering the medical fluid, the administration device comprising a body housing:

• at least one containment tank of a medical fluid;
• a fluid injection device which interfaces with the containment tank and is suitable to allow controlled delivery of a fluid through a cannula;
• an extraction device of the cannula movable from a retracted or rest configuration to an extracted or infusion configuration;
• and
• an activator rotatable about a rotation axis in an injection rotation direction and in a control rotation direction, opposite each other, wherein:
• the activator comprises a control shaft configured so that the extraction of the cannula takes place by rotating the control shaft in the injection rotation direction or in the control rotation direction,
• the control shaft is operatively connected to a rotor, to the fluid injection device, and to the extraction device of the cannula, and
• each of the fluid injection and extraction devices is operatively connected to the control shaft by a one-way transmission mechanism, which allows the transmission of motion in one of said rotation directions of the control shaft and prevents transmission of motion in the other direction of rotation, said one-way transmission mechanisms being opposite each other, so that the rotation of the control shaft in the control rotation direction allows the verification of the status of the extraction device of the cannula and the rotation of the control shaft in the injection rotation direction allows the activation of the fluid injection device,
• the method comprising, in the case of an initialization request, the steps of:
• checking in advance that the cannula has been extracted, by controlling the rotation of the control shaft in the control rotation direction,
• in case of negative verification indicating non-complete extraction of the cannula, performing the initialization step by rotation of the control shaft in the injection rotation direction, and
• in case of positive verification indicating complete extraction of the cannula, not performing the initialization step.