Assembly for Urinary Drainage

An assembly for urinary drainage comprising a urinary drainage device for collecting urine from a body opening and a collecting bag connected to the device such that a urinary flow can be established in a flow path from the device into the bag, wherein the assembly comprises suction means arranged for providing suction through the flow path into the bag, the suction means being provided by interaction with the collecting bag itself, as the volume of the collecting bag is expanded such that negative pressure is created.

An assembly according to any of the preceding claims, wherein the urinary draining device is a telescopic catheter.

An assembly according to any of the preceding claims, wherein the assembly comprises a trigger by which expansion of the expansion element or the volume increase can be initiated.

An assembly according to any of the preceding claims, wherein a trigger is used to control the expansion element.

An assembly according to any of the preceding claims, wherein a trigger is used to increase the volume.

An assembly according to any of the preceding claims, wherein a trigger can be operated manually.

An assembly according to any of the preceding claims, wherein the urinary draining device is a telescopic catheter and a trigger forms part of the telescopic mechanism or is associated with the telescopic mechanism.

An assembly according to any of the preceding claims, wherein the expansion element functioning as a flow promoting element transforms itself when the urine collecting bag is transformed from a storage configuration to a use configuration.

An assembly according to any of the preceding claims, wherein suction through the flow path is provided when the urine collecting bag is transformed from a storage configuration to a use configuration.

An assembly according to any of the preceding claims claim, wherein the transformation of the urine collecting bag is a reshaping or unfolding of the urine collecting bag.

An assembly according to any of the preceding claims, wherein the urinary draining device is connected to the inlet of the urine collecting bag and the connection comprises slideable connecting means so that the urinary draining device and the urine collecting bag are able to slide relative to each other.

An assembly according to any of the preceding claims, wherein the flow promoting element is operated from the collapsed configuration to the expanded configuration in response to insertion of at least a part of the urinary drainage device through the inlet into the compartment.

An assembly according to any of the preceding claims, wherein the expansion element has a flat shape in the collapsed configuration and transforms itself into a three-dimensional shape to define the expanded configuration.

An assembly according to any of the preceding claims, wherein the suction means comprises an expansion element arranged in the collecting bag such that expansion of the expansion element causes increase of the volume of the bag and thereby suction through the flow path.

An assembly according to any of the preceding claims, wherein the expansion element comprises an element with shape memory characteristics.

An assembly according to any of the preceding claims, wherein the expansion element comprises a spring located in the bag.

An assembly according to any of the preceding claims, wherein the expansion element is adapted to expand by contact with an expansion medium.

An assembly according to any of the preceding claims, wherein the body of the flow promoting element is transformed into a helically coiled shape to define the expanded configuration.

An assembly according to any of the preceding claims, wherein the flat shaped body comprises a spiral shaped body structure which promotes the transformation of the flat shape into the helically coiled shape.

An assembly according to any of the preceding claims, wherein suction is provided by including a separate membrane arranged about the expansion element, such that the expansion element expands the volume of this separate membrane and thereby provides suction through the flow path.

An assembly according to any of the preceding claims, wherein the flow promoting element comprises a slit-plate with at least two rows of slits, where slits of a first row of slits extend from a first edge of the plate shaped element and more than halfway towards an opposite, second, edge of the plate shaped element, where slits of a second row of slits extend from the second edge of the plate shaped element and more than halfway towards the first edge of the plate shaped element, and where the slits in the first row of slits are offset from the slits of the second row of slits such that ends of the slits overlay each other.

An assembly according to any of the preceding claims, wherein the slit-plate defining the flow promoting element comprises a weakening line.

An assembly according to any of the preceding claims, further comprising a valve being movable from a closed configuration where the valve prevents a fluid flow through the inlet to an open configuration where the valve allows a fluid flow through the inlet, the valve and the flow promoting element being operatively connected to enable operation of the valve via the flow promoting element or to enable operation of the flow promoting element via the valve.

An assembly according to any of the preceding claims, wherein the valve and the flow promoting element are operatively connected to effect automatic operation of the valve upon operation of the flow promoting element or to effect automatic operation of the flow promoting element upon operation of the valve.

An assembly according to any of the preceding claims, wherein the valve opens the inlet in response to presence of urine in the flow path.

An assembly according to any of the preceding claims, wherein the flow promoting element extends from the inlet into the compartment.

An assembly according to any of the preceding claims, wherein the flow promoting element forms part of the valve.

A method of promoting a fluid flow in an assembly for urinary drainage comprising a urinary drainage device for collecting urine from a body opening and a urine collecting bag with a compartment formed by sheets of a foil material and having an inlet for receiving urine from the urinary drainage device, the method comprising providing a flow promoting element between the sheets, where the flow promoting element automatically expands itself from a collapsed configuration to an expanded configuration in such a way that a fluid flow into the urine collecting bag is promoted.

A method of promoting a flow through a urinary drainage device, where the device is connected to a collecting bag in such a way that a flow of urine can be established in a flow path from the device into the bag, the method comprising establishing suction through the flow path into the bag the suction means being provided by interaction with the collecting bag itself, as the volume of the collecting bag is expanded such that negative pressure is created.