Device and method for applying a pharmaceutical fluid
AssigneeHeraeus Medical GmbH
InventorsSebastian Vogt, Thomas Kluge
Life of this patent
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Abstract
A device and method for applying a pharmaceutical fluid comprising a hollow cylindrical body, which surrounds a channel that extends through the body from a proximal body end to a distal body end of the body, wherein an outer surface of the body has at least partially an external thread, and has a connecting element arranged at the proximal body end, via which a proximal channel end of the channel can be reversibly connected in terms of fluid conduction to a reservoir for the pharmaceutical fluid.
Claims13
A device for applying a pharmaceutical fluid comprising:
- a hollow cylindrical body, which surrounds a channel that extends through the body from a proximal body end to a distal body end of the body,
- wherein an outer surface of the body has at least partially an external thread, and comprising a connecting element arranged at the proximal body end, via which a proximal channel end of the channel can be reversibly connected in terms of fluid conduction to a reservoir for the pharmaceutical fluid,
- wherein a check valve that is arranged in the channel and is fluid-impermeable in a direction of the proximal channel end, and a sealing element arranged in the channel distal to the check valve, which closes a distal channel end of the channel in terms of fluid conduction and which has a gap that can be reversibly opened in terms of fluid conduction when pressure is applied to the pharmaceutical fluid from the direction of the proximal channel end, such that the pharmaceutical fluid can be applied from the distal channel end.
A method for applying a pharmaceutical fluid by means of a device, said device comprising:
- a hollow cylindrical body, which surrounds a channel that extends through the body from a proximal body end to a distal body end of the body,
- wherein an outer surface of the body has at least partially an external thread, and comprising a connecting element arranged at the proximal body end, via which a proximal channel end of the channel can be reversibly connected in terms of fluid conduction to a reservoir for the pharmaceutical fluid,
- wherein a check valve that is arranged in the channel and is fluid-impermeable in a direction of the proximal channel end, and a sealing element arranged in the channel distal to the check valve, which closes a distal channel end of the channel in terms of fluid conduction and which has a gap that can be reversibly opened in terms of fluid conduction when pressure is applied to the pharmaceutical fluid from the direction of the proximal channel end, such that the pharmaceutical fluid can be applied from the distal channel end;
- said method for applying the pharmaceutical fluid by means of the device, comprising the following steps:
- a. Implanting of the device;
- b. Connecting in terms of fluid conduction of the device to a reservoir for the pharmaceutical fluid;
- c. Building up of a conveyance pressure on the pharmaceutical fluid from the direction of the proximal channel end of greater than 5 N/cm2;
- d. Opening in terms of fluid conduction of the gap in the sealing element by the action of the conveyance pressure;
- e. Dispensing of the pharmaceutical fluid from the gap that is open in terms of fluid conduction;
- f. Closing in terms of fluid conduction of the gap by reducing the conveyance pressure to 5 N/cm2 or less.
Dependencies are inferred from the claim text.