Ostomy appliance coupling assembly

Patent metadata

Field	Value
Publication number	US-12295875-B2
Application number	US-202117179691-A
Country	US
Kind code	B2
Filing date	Feb 19, 2021
Priority date	Feb 20, 2020
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

A coupling assembly for an ostomy appliance that has a locking arrangement, a first coupling and a second coupling. The locking arrangement has a locking ring and first and second grips mounted to the locking ring. The locking ring is mounted to first and/or second coupling, forms an inner circumference and is adjustable between locked and unlocked configurations. In the locked configuration the locking ring is for maintaining the first and second couplings in a coupled configuration and the inner circumference is less than in the unlocked configuration. The first and second grips are positioned about the locking ring to be moveable towards one another to increase the inner circumference and adjust the locking ring from the locked configuration to the unlocked configuration.

First claim

The invention claimed is:

1. A coupling assembly for an ostomy appliance comprising a locking arrangement, a first coupling and a second coupling, wherein the locking arrangement comprises:
a locking ring, mounted to the first coupling, forming an inner circumference and being adjustable between locked and unlocked configurations, wherein in the locked configuration the locking ring is for maintaining a coupled configuration between the first coupling and the second coupling and the inner circumference of the locking ring is less than in the unlocked configuration;
first and second grips mounted to the locking ring, wherein the first and second grips are positioned about the locking ring to be moveable towards one another to increase the inner circumference and adjust the locking ring from the locked configuration to the unlocked configuration;
a first grip constraining arrangement comprising a first constraining slot defined in the locking ring and a corresponding constraining pin extending from the locking ring and at least partially positioned within the first constraining slot; and
a second grip constraining arrangement comprising at least one constraining recess defined in the locking ring and a constraining protrusion extending from the first coupling, the constraining protrusion configured to be at least partially positioned in the at least one constraining recess;
wherein the first grip constraining arrangement and the second grip constraining arrangement are configured to constrain radial and circumferential movement of the first and second grips when the locking ring is adjusted between the locked and unlocked configurations.

2. The coupling assembly as claimed in claim 1 wherein the locking ring comprises first and second locking ring ends moveable relative to one another between the locked and unlocked configurations.

3. The coupling assembly as claimed in claim 2 wherein the locking ring extends around a length that is greater than the inner circumference in the locked configuration.

4. The coupling assembly of claim 1 further comprising first and second pinch tabs extending from the locking ring and comprising the first and second grips respectively, wherein the first pinch tab extends around the locking ring between a first tab distal end and a first tab proximal end, the second pinch tab extends around the locking ring between a second tab distal end and a second tab proximal end and the first and second tab distal ends form the first and second grips.

5. The coupling assembly as claimed in claim 4 wherein the first and second pinch tabs comprise first and second tab proximal portions adjacent to the locking ring forming the first and second tab proximal ends and first and second tab distal portions extending radially outwardly from the first and second tab proximal portions forming the first and second tab distal ends.

6. The coupling assembly as claimed in claim 5 wherein the first and second tab distal portions extend around the locking ring between the first and second tab distal ends and first and second tab inner edges, wherein in the unlocked configuration the first and second tab distal ends are aligned with the second and first tab inner edges respectively.

7. The coupling assembly as claimed in claim 1 comprising first and second pinch tabs that slide adjacent to one another when the locking ring is adjusted between the locked and unlocked configurations.

8. The coupling assembly as claimed in claim 1 :
wherein the locking ring comprises at least one locking tab extending inwardly around the inner circumference for maintaining the coupling assembly in the coupled configuration when the locking ring is in the locked configuration;
wherein the locking ring is mounted to the first coupling and the at least one locking tab is configured to engage with the second coupling when in the coupled and locked configurations to maintain the first and second couplings in the coupled configuration;
wherein the first coupling comprises at least one first coupling opening, the at least one locking tab being configured to engage the second coupling through the at least one first coupling opening when in the coupled and locked configurations to maintain the first and second couplings in the coupled configuration.

9. The coupling assembly as claimed in claim 8 wherein the second coupling comprises a second coupling outer flange, the at least one locking tab being configured to at least partially overlap the second coupling outer flange when in the coupled and locked configurations to maintain the first and second couplings in the coupled configuration.

10. The coupling assembly as claimed in claim 1 further comprising a first and second grip constraining arrangement configured to constrain radial and/or circumferential movement of the first and second grips when the locking ring is adjusted between the locked and unlocked configurations.

11. The coupling assembly as claimed in claim 1 further comprising a centring arrangement configured to constrain circumferential movement of at least a portion of the locking ring when the locking ring is adjusted between the locked and unlocked configurations.

12. A coupling assembly for an ostomy appliance, comprising:
a locking arrangement, a first coupling and a second coupling, wherein the locking arrangement comprises:
a locking ring, mounted to the first or second coupling, forming an inner circumference and being adjustable between locked and unlocked configurations;
first and second grips mounted to the locking ring and being moveable towards one another to increase the inner circumference and adjust the locking ring from the locked configuration to the unlocked configuration;
a first grip constraining arrangement comprising a first constraining slot defined in the locking ring and a corresponding constraining pin;
a second grip constraining arrangement comprising first and second constraining recesses extending radially outwardly from the inner circumference of the locking ring and located towards a first and second locking ring ends of the locking ring respectively and
a radially extending constraining protrusion extending from the first coupling and mounted in at least one of the first and second constraining recess;
wherein, the constraining protrusion remains in the first and second constraining recesses as the first and second grips are moved between the locked and unlocked configurations;
wherein the first grip constraining arrangement and the second grip constraining arrangement are configured to constrain radial and circumferential movement of the first and second grips when the locking ring is adjusted between the locked and unlocked configurations.

13. The coupling assembly as claimed in claim 12 , further comprising:
a sealing arrangement extending around a coupling aperture, the sealing arrangement being located between the first and second couplings in the coupled configuration;
wherein, in the coupled configuration the sealing arrangement is compressed along the axial direction to form a seal between the first and second couplings and the sealing arrangement is located adjacent to and at least partially bounds the coupling aperture;
wherein the first coupling comprises a first coupling inner wall and a first coupling channel extending around the first coupling inner wall and the second coupling comprises a second coupling wall and a second coupling inner flange extending radially inwardly towards the coupling aperture from the second coupling wall;
wherein in the coupled configuration the second coupling wall extends into the first coupling channel, the second coupling inne

Assignees

• Convatec Ltd

Inventors

• Holroyd Simon
• Baker Dominic
• Taal Stefan
• Plevnik Marko

Classifications

• A61F2005/4486

  with operable locking ring · CPC title

• A61F5/445

  Colostomy, {ileostomy or urethrostomy} devices (A61F5/441, A61F5/442, A61F5/443 take precedence) · CPC title

• A61F5/448 Primary

  Means for attaching bag to seal ring · CPC title