DRUG DELIVERY SYSTEM
FIG8 shows a sectional and exploded view of the first and second containers
As shown by the FIG8, the delivery system (1) may further comprise a flow restrictor (19) arranged between the outlet port (18) of the first container (11) and the transcutaneous device (7). The flow restrictor (19) may be configured to regulate the flow of solution delivered to the patient when the solution stored in the first container is submitted to a determined range of pressure. For example, the target flow rate may be comprised between 0 and 10 ml/min, preferentially between 0,01 and 5 ml/min and more preferentially between 0.05 and 3 ml/min. The flow restrictor (19) may comprise a fluid pathway configured to provide a predetermined fluidic resistance between the first reservoir and the patient. The flow restrictor (19) may be configured in order to provide the main fluidic resistance from the first storage compartment to an end of the transcutaneous device. The flow restrictor (19) may be arranged into or secured to at least a rigid part (20) of the first container. The flow restrictor (19) may be composed of at least one part. As disclosed by the FIG8, the second container may comprise a concave internal structure (24) which may be rigid. The second movable wall may be configured to closely match the concave internal structure (24). During the filling step, the first movable wall may move at least partially into the concave internal structure of the second container.
sectional exploded view
8
trigger device
24
concave internal structure
28
flexible sheet
19
flow restrictor
12
second container
11
first container
18
outlet port
20
rigid part
25
example
26
valve device
32
outlet location
["1. A delivery system (1) configured to be secured on a patient skin comprising: - a first container (11) having a first movable wall (6a) and a first storage compartment (11a) intended to store a medical fluid, - a second container (12) having a second movable wall (6b) and a second storage compartment (12a), and - a skin adherable unit (3) configured to secure the first container (11) and the second container (12) to the patient skin, wherein the first movable wall (6a) and the second movable wall (6b) are facing each other and define a containers' interface (6) having a cavity (44); wherein the system (1) further comprises a vent device (16) configured to allow a pressure equilibration between the cavity (44) of the containers' interface and the outside of the delivery system when at least one of the first movable wall (6a) and the second movable wall (6b) moves.", '2. System according to the claim 1, wherein at least one of the first container (11) and the second container (12) comprises a rigid part (20, 25).', '7. System according to any one of the previous claims, wherein at least one of the first container (11) and the second container (12) comprises a concave internal structure (23, 24) in which at least one of the first movable wall (6a) and the second movable wall (6b) is configured to move.', '13. System according to the previous claim further comprising a trigger device (8) operable coupled with the fluid communication device and configured to change the status of the fluid communication device.']