Granted Patent B2

US 12,303,423 · App. 17/061,804 · Granted May 20, 2025

Inventors: Marcus Hoggarth (London, GB); Oliver Poyntz (London, GB); Kimahni Emsley (London, GB); Daljinder Sanghera (London, GB)

Assignee: CONVATEC LIMITED

A61F5/4407A61F5/448

Abstract

Claims (52)

1. An ostomy appliance comprising:

inner and outer walls of flexible sheet material joined together to define a cavity for containing a stomal output, the inner wall comprising an inlet for receiving the stomal output into the cavity;

a retractable drain being slidably movable between an extended configuration for draining the stomal output from the cavity and a retracted configuration for storage of the retractable drain; and

a push element for pushing the retractable drain into the retracted configuration, the push element comprising a strip of material having higher rigidity than the flexible sheet material of the inner wall and/or the outer wall;

wherein the retractable drain comprises a closure portion which may be turned up to close an outlet opening of the retractable drain and a first fastener configured to fasten the closure portion in place once turned up;

wherein at least a portion of the closure portion and the first fastener are positioned in a channel when the retractable drain is in the retracted configuration;

wherein the first fastener is configured to be operable independently of the push element, and wherein the push element and the first fastener are formed as separate components.

2. The ostomy appliance according to claim 1 wherein the closure portion is operable to be turned up and fastened while the retractable drain is in the extended configuration.

3. The ostomy appliance according to claim 2 wherein the retractable drain is configured such that after fastening of the closure portion in the extended configuration, the retractable drain is slidably moveable into the retracted configuration.

4. The ostomy appliance as claimed in claim 1 wherein the closure portion is configured to be turned up by forming at least one fold across the retractable drain to inhibit passage of stomal output through the outlet end, wherein the closure portion is configured to be folded into a plurality of folds across the retractable drain to inhibit passage of stomal output through the outlet opening.

5. The ostomy appliance as claimed in claim 1 wherein at least a part of the first fastener is arranged on an intermediate portion of the retractable drain such that the first fastener is adjacent to or overlapping the closure portion;

wherein the first fastener comprises:

a first flange attached to the intermediate portion of the retractable drain adjacent to the closure portion; and

a second flange comprising a first fastening element for attachment to the closure portion;

wherein the closure portion further comprises a second fastening element for attachment to the first fastening element;

wherein the first fastener is arranged across the width of the retractable drain;

wherein the second flange is configured to extend over the closure portion when fastened.

6. The ostomy appliance as claimed in claim 1 wherein the retractable drain further comprises a first pursing strip and a second pursing strip arranged on the closure portion of the retractable drain;

wherein one or more of the pursing strips comprises a strip of flexible material having higher rigidity than the material forming the retractable drain, the strip being arranged across a width of the retractable drain;

wherein the first pursing strip is arranged on an outer side of the retractable drain, and the second pursing strip arranged on an inner side of the retractable drain, the first pursing strip and the second pursing strip being positioned at the same distance along the retractable drain such that they are arranged opposite each other;

the appliance further comprising a lip pursing strip arranged adjacent to the outlet opening of the retractable drain;

wherein the first pursing strip and the second pursing strip are arranged adjacent to each other and spaced apart to define a folding point of the retractable drain between the first pursing strip and the second pursing strip such that the retractable drain is foldable in increments defined by a length of the first pursing strip and the second pursing strip;

wherein each of the first pursing strip and second pursing strip extends the same distance along a length of the retractable drain.

7. The ostomy appliance as claimed in claim 1 wherein the retractable drain comprises:

an inner drain portion extending from a main body portion of the inner wall; and

an outer drain portion extending from a main body portion of the outer wall;

wherein the inner and outer drain portions are sealed at their lateral edges to define a drain passage between the inner and outer drain portions;

wherein the inner drain portion is integrally formed with the main body portion of the inner wall and/or the outer drain portion is integrally formed with the main body portion of the outer wall;

wherein one of the inner drain portion and the outer drain portion is longer than the other of the inner drain portion and the outer drain portion, thereby defining a lip at the outlet opening of the retractable drain; wherein a pursing strip is arranged on the lip.

8. The ostomy appliance as claimed in claim 1 wherein in the retracted configuration drainage of the stomal output from the cavity into the retractable drain and along the retractable drain is inhibited by folds formed across the retractable drain during the sliding retraction; and/or

wherein in the retracted configuration substantially all of the retractable drain overlies a main body portion of the outer and/or inner wall.

9. The ostomy appliance according to claim 1 wherein the closure portion comprises a folding portion which is foldable to close an outlet opening of the drain.

10. The ostomy appliance according to claim 1 wherein the first fastener comprises a pull tab for gripping by the user to slide the retractable drain from the retracted configuration to the extended configuration.

11. An ostomy appliance comprising:

inner and outer walls of flexible sheet material joined together to define a cavity for containing a stomal output, the inner wall comprising an inlet for receiving the stomal output into the cavity;

a retractable drain being slidably movable between an extended configuration for draining the stomal output from the cavity and a retracted configuration for storage of the drain, the retractable drain comprising a closure portion and a first fastener configured to fasten the closure portion in a turned up orientation;

an inner comfort layer arranged over at least a part of the inner wall;

an outer comfort layer arranged over at least a part of the outer wall; and

a push element for pushing the retractable drain into the retracted configuration, the push element comprising a strip of material having higher rigidity than the flexible sheet material of the inner wall and/or the outer wall;

wherein in the retracted configuration the retractable drain and at least a portion of the closure portion and the first fastener are received in a channel arranged between either the inner wall and the inner comfort layer or the outer wall and the outer comfort layer, the dimensions of the channel being configured such that the retractable drain is slidably held in the channel when in the retracted configuration;

wherein the inner comfort layer and/or the outer comfort layer defines an opening through which the retractable drain is slidably moveable between the extended and retracted configurations;

wherein a closure for closing the opening is arranged at or proximal to a lower end of the channel such that the closure restricts sliding of the retractable drain from the retracted configuration;

wherein the first fastener is configured to be operable independently of the push element, and wherein the push element and the first fastener are formed as separate components.

12. The ostomy appliance as claimed in claim 11 wherein the closure comprises a first closure element arranged on the inner comfort layer and a second closure element arranged on the outer comfort layer.

13. The ostomy appliance as claimed in claim 11 further comprising a guide panel arranged on an outer face of the inner wall or an outer face of the outer wall;

wherein the channel is defined between the guide panel and the inner wall or the outer wall;

wherein a lower portion of the guide panel is arranged adjacent to the opening of the channel, the lower portion of the guide panel being attached to the comfort layer;

wherein the lower portion of the guide panel is attached to the closure such that opening of the closure widens a lower portion of the channel.

14. The ostomy appliance as claimed in claim 11 , further comprising a push element for driving the retractable drain into the channel to move the retractable drain into the retracted configuration; and

a guide panel arranged out an outer face of a main body portion of the inner wall or a main body portion of an outer face of the outer wall;

wherein the channel is defined between the guide panel and the inner wall or the outer wall;

wherein a lower portion of the guide panel extends downwards from the channel, the lower portion of the guide panel being attached to an intermediate portion of the push element, and wherein the lower portion of the guide panel is attached to the push element across a majority of the width of the retractable drain.

Assignments (1)

Priority Claims (7)

Continuity (3)

References Cited (32)