Device for infusion of fluids

Abstract

A device (1) for infusion of medical fluids, comprising: an internal reservoir (2) for a fluid to be administered made of a first flexible base material to vary its volume as a function of the quantity of fluid present thereinside; and an outer casing (4) containing the reservoir (2), comprising at least a side wall (5) made of a second elastic base material suitable to make elastically deformablethe casing (4) to vary the geometry and internal volume thereof as a function of the volume of the reservoir (2).

Description

technical field [0001] The invention can be applied in the field of medical equipment, and relates to a device for infusion of medical fluid. Background technique [0002] Devices for the infusion of medical fluids, such as physiological or pharmacological solutions, by intravenous, intramuscular or subcutaneous routes are known devices intended to be inserted into the route for administering the fluid in order to facilitate its passage from the container Controlled and adjustable access (such as vials and bottles, etc.) to drug delivery devices, such as needles, catheters, or other known devices inserted into a patient for fluid infusion. [0003] An example of a similar medical device currently on the market is an elastomeric pump, which is a single-use device whose operation is based on the expansion of an elastomeric put pressure on. [0004] Typically, known elastomeric pumps comprise a container of elastomeric material containing the fluid to be administered and a pr...

AI Technical Summary

Problems solved by technology

[0012] Still disadvantageously, the filling of the container of the known single-use type devices cannot be carried out for much time before the device is used

In fact, the pressure of the fluid on the container for a long time may lead to excessive plastic deformation, which cannot guarantee the release to the fluid during the use phase of the energy required for its correct supply

[0013] Furthermore, in order to replace excessively deformed containers and allow the reuse of known types of devices, the procedure of opening the casing, removing the container, removing the container, installing a new container and finally closing the casing must be carried out, resulting in the failure to render the product sterile without being able to use

[0014] Another disadvantage of the above-mentioned solutions is manifested in the fact that, even in the case of an empty container, the total dimensional volume of devices with rigid shells currently on the market is on average greater than 50% of the maximum volume of the contained fluid

[0015] Furthermore, typically such devices are implemented according to an axisymmetric (eg cylindrical or spherical) configuration, and thus if applied to a patient they result in a bulky and conspicuous

[0016] Another disadvantage manifests itself in the fact that contact between the fluid and the elastomeric material of the container (usually silicone) can alter the contained solution, often over long periods of time

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