Device, system, and method for applying a pharmaceutical fluid

A system for applying a pharmaceutical fluid, comprising:

• a reservoir for the pharmaceutical fluid;
• and,
• a device comprising:
• a tube;
• and,
• a valve element,
• wherein the tube can be connected in terms of fluid conduction via a first tube end to the reservoir for the pharmaceutical fluid;
• and,
• wherein the valve element is arranged in a second tube end of the tube, wherein the second tube end comprises a terminal opening;
• wherein the valve element has at a first valve element end facing toward the first tube end, at least one anchoring element in order to prevent the valve element from being discharged from the second tube end has at a second valve element end facing toward the second tube end, a sealing element with an outer diameter of the sealing element corresponding to at least one inner tube diameter of the tube, such that the sealing element is configured to fluid tightly close the terminal opening of the second tube end so that the second tube end is sealed in terms of fluid conduction by the sealing element, and comprises a conduit means connecting in terms of fluid conduction the first tube end and the sealing element;
• wherein, when pressure is charged to the pharmaceutical fluid from a direction of the first tube end, a gap can be reversibly formed between the tube and the sealing element so that the second tube end is open in terms of fluid conduction.

A method for applying a pharmaceutical fluid with a device comprising:

• a tube and a valve element,
• wherein the tube can be connected in terms of fluid conduction via a first tube end to a reservoir for the pharmaceutical fluid;
• and,
• wherein the valve element is arranged in a second tube end of the tube, wherein the second tube end comprises a terminal opening;
• wherein the valve element has at a first valve element end facing toward the first tube end, at least one anchoring element in order to prevent the valve element from being discharged from the second tube end has at a second valve element end facing toward the second tube end, a sealing element having an outer diameter of the sealing element corresponding to at least one inner tube diameter of the tube, such that the sealing element is configured to fluid-tightly close the terminal opening of the second tube end so that the second tube end is sealed by the sealing element in terms of fluid conduction;
• and comprises:
• a conduit means connecting the first tube end and the sealing element in terms of fluid conduction, comprising the following steps:
• a. connecting, in terms of fluid conduction, the device to the reservoir for the pharmaceutical fluid;
• b. conveying the pharmaceutical fluid from the reservoir via the tube up to the sealing element;
• c. building up a pressure of greater than 5 N/cm2 on the pharmaceutical fluid from the direction of the first tube end within the tube;
• d. radially expanding the tube in the region of the sealing element by the action of the pressure while forming a gap between the sealing element and the tube;
• e. dispensing the pharmaceutical fluid from the gap while reducing the pressure;
• f. radially contracting the tube while closing the gap between the sealing element and the tube.