AU2020406856B2

AU2020406856B2 - Belt mounts for ostomy appliances

Info

Publication number: AU2020406856B2
Application number: AU2020406856A
Authority: AU
Inventors: Dominic Baker; Simon HOLROYD; Stefan TAAL
Original assignee: Convatec Ltd
Current assignee: Convatec Ltd
Priority date: 2019-12-19
Filing date: 2020-12-17
Publication date: 2026-01-08
Anticipated expiration: 2040-12-17
Also published as: EP4076300C0; AU2020406856A1; US20210186745A1; EP4076300B1; EP4076300A2; CA3165266A1; CN114867436A; JP2023511498A

Abstract

A belt mount (5) for attaching a belt (40) to a wafer (2) of an ostomy appliance (1), the belt mount comprising a mounting ring (11) which can be attached to a hook (42) by inserting a portion of the mounting ring (11) into a mouth of the hook (42) and pulling the mounting ring (11) and hook (42) away from each other. The mounting ring (11) at least partially surrounding a mounting aperture (12) which accommodates at least a portion of the hook (42) upon successful insertion of the portion of the mounting ring (11) into the mouth of the hook (42). The belt mount further comprising a tongue (13) that extends into the mounting aperture (12) for contacting the hook (42) if the mounting ring (11) and the hook (42) are subsequently pushed towards each other so as to resist detachment of the mounting ring (11) from the hook (42).

Description

WO wo 2021/123786 PCT/GB2020/053258 - 1

Belt Mounts for Ostomy Appliances

Technical Field

The present disclosure relates to the field of ostomy appliances for managing effluent from

a stoma and relates in particular to belt mounts for attaching a belt to a wafer of an ostomy

appliance.

Background of the disclosure There are many forms of ostomy appliance which try to provide a secure, comfortable fit for

ostomates. 10 ostomates.

US8945076 describes a one-piece ostomy appliance adapted to be removably attached to

a patient for receiving discharge from a stoma of the patient that includes a pouch that

defines a cavity. A first opening is defined by the pouch for receiving a stoma and

communicating discharge from the stoma into the cavity. The ostomy appliance also

includes a face plate having a first side secured to the pouch and a second opposing side

that includes an adhesive for securing the pouch to a patient. A second opening is defined

by the face plate and is generally aligned with the first opening. Further, the ostomy

appliance includes one or more tabs for coupling a belt thereto, wherein the one or more

tabs are coupled directly to the face plate. The one or more tabs allow the pouch to be

secured to a patient by a belt or other similar mechanism.

The present applicant has found that ostomates may find it difficult to secure an ostomy

appliance to their body. This can also be the case with ostomy appliances that are provided

with one or more tabs for securing to a belt or other similar mechanism. In particular, the

ostomate may have difficulty in locating the one or more tabs (which may be obscured from

sight during mounting by other parts of the ostomy appliance). Further, they may have

difficulty in physically attaching the one or more tabs (this difficulty which may be

exacerbated if the ostomate has reduced manual dexterity). Further, the process of

attaching the one or more tabs to the belt or similar mechanism may not engender a feeling

of security in the ostomate if they find it difficult to establish if a good connection between

the one or more tabs and the belt or similar mechanism has been achieved. Further, they

may face difficulties in easily detaching the one or more tabs from the belt or similar

mechanism when wishing to empty or replace the ostomy appliance (this difficulty may also

be exacerbated if the ostomate has reduced manual dexterity).

In light of this, there remains a need for a belt mount for ostomy appliances with enhanced

usability for ostomates, particularly in the areas of ease of use and security of use.

Summary of the disclosure

In this specification, the term "stomal output" refers to any gases or fluids or solids

produced by an ostomate that may be secreted from the stoma or that exit the stoma. The

stomal output may comprise stomal gas, stomal liquid and stomal solids.

In this specification, the term "stoma" refers to an opening in the body. Generally the

stoma is a surgical opening in the torso of the body. In some instances, the term "stoma"

also refers to internal tissue, organs or portions thereof that are exposed by the opening.

By way of non-limiting example, internal tissue may be selected from colon, ileum, small

intestine, large intestine, jejunum, and duodenum, and combinations thereof. The internal

tissue may be an end or a loop of a small or large intestine.

In this specification, the term "ostomate" refers to a subject that may have use of the belt

mount for an ostomy appliance disclosed herein. While ostomate usually refers to a subject

with a surgical opening, as used herein, "ostomate" may refer to a subject who has a

stoma, regardless of whether the stoma was created by surgery or other means.

The term "user" may refer to an ostomate, or to another person assisting the ostomate, for

example, with emptying of the stomal output from the cavity.

In this specification, the ostomy appliances disclosed herein may, for example, be used for

managing a stoma created by an esophagostomy, a gastrostomy, a cholecystostomy, a

choledochostomy, a cecostomy, a colostomy, a duodenostomy, an ileostomy, a

jejunostomy, an appendicostomy, a tracheostomy, a urostomy, a nephrostomy, an

ureterostomy, or a vesicostomy. The ostomy appliances disclosed herein may be used

with additional devices including, but not limited to, a shunt, a catheter, a plug or a fecal

management system.

In this specification locations and orientations of features may be described with reference

to the belt mount for an ostomy appliance being "in use", "orientated as it would be in use"

or similar. Such terms refer to the intended orientation of the belt mount for an ostomy

appliance when it is secured to a body of an ostomate with the ostomate in a standing

position, irrespective of whether the ostomy appliance is currently performing such a use or wo 2021/123786 WO PCT/GB2020/053258 - 3 - the actual position of the ostomate. The terms "upper" and "lower" and related terms refer to the relative position of a part or portion of the belt mount for an ostomy appliance when orientated as it would be in use.

Ostomy appliances are commonly attached to the body by means of a wafer which

includes an adhesive layer or layers. The wafer typically comprises an adhesive layer on a

body-facing side for adhering the wafer to the body of the ostomate. Typically, a release

liner covers a body-facing side of the wafer that is removed by the user prior to fitting to the

skin. In this specification, the term "wafer" may be used interchangeably with the terms

"adapter," "ostomy wafer," "baseplate", or "layered adhesive wafer." In this specification, the

term "wafer" includes wafers for a "two-piece appliance" and for a "one-piece appliance".

In this specification a "two-piece appliance" refers to an appliance where the wafer forms

part of a separate body fitment component that is attached by a releasable coupling to a

pouch appliance. A two-piece appliance permits the body fitment component to be

separated from the pouch appliance without damage, so that at least one of the parts

continues to be functionally usable. For example, the body fitment component may remain

in place on the body of the ostomate. In this specification a "one-piece appliance" refers to

an appliance where the wafer is permanently attached to the appliance, to the extent that

the wafer cannot easily be separated without risk of damaging the appliance. A one-piece

appliance is intended to be used as an integral unit. In this specification, the belt mounts for

ostomy appliances disclosed herein may, for example, be used with one-piece and two-

piece appliances.

One embodiment may be a belt mount for attaching a belt to a wafer of an ostomy appliance, the belt mount having a mounting ring configured to be attached to a hook by

inserting a portion of the mounting ring into a mouth of the hook and pulling the mounting

ring and hook away from each other. The mounting ring at least partially surrounds a

mounting aperture which accommodates at least a portion of the hook upon successful

insertion of the portion of the mounting ring into the mouth of the hook. The belt mount

further has a tongue that extends into the mounting aperture for contacting the hook if the

mounting ring and the hook are subsequently pushed towards each other so as to resist

detachment of the mounting ring from the hook.

PCT/GB2020/053258 - 4

Additionally or alternatively, the tongue extends in a plane that is parallel with a face of the

mounting ring. The tongue also extends from a proximal end of the mounting aperture. The

tongue has a concave end that is contactable with the hook if the mounting ring and the

hook are pushed towards each other.

Additionally or alternatively, the belt mount has a clearance either side of tongue and in

between the tongue and the mounting ring, and the tongue is cantilevered from a supporting portion of the belt mount. The tongue is flexible. More specifically the tongue is

configured to flex and ride over a back portion of the hook on insertion of the portion of the

mounting ring into the mouth of the hook.

Additionally or alternatively, the belt mount also has at least one protrusion that extends

from at least one of a first face and a second face of the mounting ring to contact the hook

when inserting the portion of the mounting ring into the mouth of the hook. The at least one

protrusion is located at a distal end of the mounting ring opposite the tongue. The at least

one protrusion is located adjacent an inner edge of the mounting ring. Further, the at least

one protrusion has a ramped surface facing towards the mounting aperture. The at least

one protrusion has a width no greater than a width of the tongue.

Additionally or alternatively is a system for the belt mount wherein the hook comprises a

baseplate and a cantilevered hook element, wherein a mouth of the hook is defined

between the baseplate and the cantilevered hook element. Further, a width of the

cantilevered hook element is less than a width of the mounting aperture so as to

accommodate limited rotation of the hook and the baseplate about an axis extending perpendicularly to a plane of the mounting ring. The limited rotation of the hook and the

baseplate is guided by contact between a concave end of the tongue and a convex face of

the cantilevered hook element. Further, the limited rotation of the hook and the baseplate is

constrained by contact between the cantilevered hook element and the mounting ring.

Additionally or alternatively, the hook comprises a baseplate and the tongue is configured

to contact the baseplate to cause at least one of a tactile feedback and an audible

feedback as the tongue recovers its shape upon successful insertion of the portion of the

mounting ring into the mouth of the hook.

Another embodiment is a belt mount for attaching a belt to a wafer of an ostomy appliance

having a mounting ring which can be attached to a hook by inserting a portion of the

mounting ring into a mouth of the hook. The mounting ring has at least one protrusion that

extends from at least one of a first face and a second face of the mounting ring to contact

the hook when inserting the portion of the mounting ring into the mouth of the hook.

Additionally or alternatively, at least one protrusion is configured to provide a resistance to

insertion of the portion of the mounting ring into the mouth of the hook.

Additionally or alternatively, overcoming the resistance to insertion provided by the at least

one protrusion is configured to produce at least one of a tactile feedback and an audible

feedback signaling successful insertion of the portion of the mounting ring into the mouth of

the hook.

Additionally or alternatively, the mounting ring at least partially surrounds a mounting

aperture.

Additionally or alternatively, the at least one protrusion is located at a distal end of the

mounting aperture.

Additionally or alternatively, the at least one protrusion is located adjacent an inner edge of

the mounting ring.

Additionally or alternatively, the at least one protrusion comprises a ramped surface facing

towards the mounting aperture.

Additionally or alternatively, the at least one protrusion has a width no greater than a width

of the hook.

Additionally or alternatively, the at least one protrusion is formed from a compressible

material, preferably a resilient material.

Additionally or alternatively, only a single protrusion extends from the first face of the

mounting ring and only a single protrusion extends from the second face of the mounting

ring.

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Additionally or alternatively, both single protrusions are aligned with one another about a

circumference of the mounting ring.

Additionally or alternatively, the hook comprises a baseplate and a cantilevered hook

element, wherein a mouth of the hook is defined between the baseplate and the

cantilevered hook element.

Additionally or alternatively, the at least one protrusion is configured to be received in an

aperture in the baseplate on insertion of the portion of the mounting ring into the mouth of

the hook.

Additionally or alternatively, the at least one protrusion received in the aperture in the

baseplate is a protrusion that extends from the second face of the mounting ring.

Additionally or alternatively, a recess is on an underside of the cantilevered hook element,

wherein the at least one protrusion is configured to be received in the recess on insertion of

the portion of the mounting ring into the mouth of the hook.

Additionally or alternatively, the at least one protrusion received in the recess of the

cantilevered hook element is a protrusion that extends from the first face of the mounting

ring.

Additionally or alternatively, a clearance of the mouth between the baseplate and the

cantilevered hook element is less in dimension than a total thickness of the mounting ring

and the at least one protrusion such that insertion of the portion of the mounting ring into

the mouth of the hook must be accommodated by one or more of deflection of the cantilevered hook element and compression of the at least one protrusion.

aperture and the mounting ring comprises at least one chamfered edge.

Additionally or alternatively, the at least one protrusion is located adjacent to the chamfered

edge of the mounting ring.

PCT/GB2020/053258 - 7 -

towards the mounting aperture.

Additionally or alternatively, wherein the ramped surface is formed as a smooth

continuation of the chamfered edge.

Another embodiment is a belt mount for attaching a belt to a wafer of an ostomy appliance,

the belt mount comprising a mounting ring which can be attached to a hook by inserting a

portion of the mounting ring into a mouth of the hook and pulling the mounting ring and

hook away from each other. The mounting ring at least partially surrounds a mounting

aperture which accommodates at least a portion of the hook upon successful insertion of

the portion of the mounting ring into the mouth of the hook. Further, the mounting ring

bordering the mounting aperture has at least one chamfered edge.

Additionally or alternatively, the chamfered edge is on a first face of the mounting ring.

Additionally or alternatively, the chamfered edge comprises a U-shaped chamfered edge.

Additionally or alternatively, at least one protrusion that extends from at least one of a first

face and a second face of the mounting ring to contact the hook when inserting the portion

of the mounting ring into the mouth of the hook.

edge of the mounting ring.

towards the mounting aperture.

Additionally or alternatively, the ramped surface is formed as a smooth continuation of the

chamfered edge.

element, wherein a mouth of the hook is defined between the baseplate and the cantilevered hook element.

WO wo 2021/123786 PCT/GB2020/053258 - 8

cantilevered hook element is greater in dimension than a thickness of the chamfered edge

of the mounting ring.

In one aspect the present disclosure provides a belt mount for attaching a belt to a wafer of

an ostomy appliance comprising a mounting ring which can be attached to a hook by

inserting a portion of the mounting ring into a mouth of the hook;

the mounting ring comprising at least one protrusion that extends from at least one

of a first face and a second face of the mounting ring to contact the hook when inserting the

portion of the mounting ring into the mouth of the hook.

The at least one protrusion may be configured to provide a resistance to insertion of the

portion of the mounting ring into the mouth of the hook. Overcoming the resistance to

insertion provided by the at least one protrusion may be configured to produce at least one

of a tactile feedback and an audible feedback signalling successful insertion of the portion

of the mounting ring into the mouth of the hook.

The mounting ring may at least partially surround a mounting aperture. The at least one

protrusion may be located at a distal end of the mounting aperture. The at least one

protrusion may be located adjacent an inner edge of the mounting ring. The at least one

protrusion may comprise a ramped surface facing towards the mounting aperture.

The at least one protrusion may have a width no greater than a width of the hook. The at

least one protrusion may be formed from a compressible material, preferably a resilient

material.

The belt mount may comprise only a single protrusion that extends from the first face of the

mounting ring and only a single protrusion that extends from the second face of the

mounting ring. Both single protrusions may be aligned with one another about a

circumference of the mounting ring.

In another aspect the present disclosure provides a system comprising a belt mount as

described above and a hook, wherein the hook comprises a baseplate and a cantilevered

hook element, wherein a mouth of the hook is defined between the baseplate and the

cantilevered hook element.

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The at least one protrusion may be configured to be received in an aperture in the

baseplate on insertion of the portion of the mounting ring into the mouth of the hook. The at

least one protrusion received in the aperture in the baseplate may be a protrusion that

extends from the second face of the mounting ring.

The system may further comprise a recess on an underside of the hook element, wherein

the at least one protrusion may be configured to be received in the recess on insertion of

the portion of the mounting ring into the mouth of the hook. The at least one protrusion

received in the recess of the hook element may be a protrusion that extends from the first

face of the mounting ring.

A clearance of the mouth between the baseplate and the cantilevered hook element may

be less in dimension than a total thickness of the mounting ring and the at least one

projection such that insertion of the portion of the mounting ring into the mouth of the hook

must be accommodated by one or more of deflection of the cantilevered hook element and

compression of the at least one projection.

In another aspect the present disclosure provides a belt mount for attaching a belt to a

wafer of an ostomy appliance, the belt mount comprising a mounting ring which can be

attached to a hook by inserting a portion of the mounting ring into a mouth of the hook and

pulling the mounting ring and hook away from each other;

the mounting ring at least partially surrounding a mounting aperture which

accommodates at least a portion of the hook upon successful insertion of the portion of the

mounting ring into the mouth of the hook;

the belt mount further comprising a tongue that extends into the mounting aperture

for contacting the hook if the mounting ring and the hook are subsequently pushed towards

each other so as to resist detachment of the mounting ring from the hook.

The tongue may extend in a plane of the mounting ring. The tongue may extend from a

proximal end of the mounting aperture. The tongue may comprise a concave end that is

contactable with the hook if the mounting ring and the hook are pushed towards each

other.

The belt mount may further comprise a clearance either side of tongue and in between the

tongue and the mounting ring, and optionally the tongue may be cantilevered from a

supporting portion of the belt mount.

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The tongue may be flexible. The tongue may be configured to flex and ride over a back

portion of the hook on insertion of the portion of the mounting ring into the mouth of the

hook.

The belt mount may further comprise at least one protrusion that extends from at least one

portion of the mounting ring into the mouth of the hook. The at least one protrusion may be

located at a distal end of the mounting ring opposite the tongue. The at least one protrusion

may be located adjacent an inner edge of the mounting ring. The at least one protrusion

may comprise a ramped surface facing towards the mounting aperture. The at least one

protrusion may have a width no greater than a width of the tongue.

In another aspect the present disclosure provides a system comprising a belt mount as set

out in the above aspect and a hook, wherein the hook comprises a baseplate and a

cantilevered hook element, wherein a mouth of the hook is defined between the baseplate

and the cantilevered hook element.

A width of the cantilevered hook element may be less than a width of the mounting

aperture so as to accommodate limited rotation of the hook and the baseplate about an

axis extending perpendicularly to a plane of the mounting ring. The limited rotation of the

hook and the baseplate may be guided by contact between a concave end of the tongue

and a convex face of the cantilevered hook element. Optionally, the limited rotation of the

hook and the baseplate may be constrained by contact between the cantilevered hook

element and the mounting ring.

pulling the mounting ring and hook away from each other;

the mounting ring at least partially surrounding a mounting aperture which

mounting ring into the mouth of the hook;

wherein the mounting ring bordering the mounting aperture comprises at least one

chamfered edge.

WO wo 2021/123786 PCT/GB2020/053258 PCT/GB2020/053258 - 11 11 -

The chamfered edge may be on a first face of the mounting ring. The chamfered edge may

comprise a U-shaped chamfered edge.

located adjacent to the chamfered edge of the mounting ring. The at least one protrusion

may comprise a ramped surface facing towards the mounting aperture. The ramped

surface may be formed as a smooth continuation of the chamfered edge.

and the cantilevered hook element. A clearance of the mouth between the baseplate and

the cantilevered hook element may be greater in dimension than a thickness of the

chamfered edge of the mounting ring.

Any one of the above aspects may comprise one or more of the following:

the ostomy appliance may be a one-piece appliance or a two-piece appliance.

the mounting aperture may be elongated in a radial direction.

the belt mount may be configured to reversibly attach the belt to the wafer.

the belt mount may be formed from a flexible material.

the mounting ring may be configured to be flexed during detachment of the portion

of the mounting ring from the hook.

the belt mount may be formed from a resilient material.

the mounting ring may be configured to be more flexible than the hook.

the mounting ring may be D-shaped.

the belt mount may comprise two or more mounting rings.

the belt mount may comprise two opposed mounting rings.

the belt mount may be part of the wafer and the hook may be associated with the

belt; or the belt mount may be associated with the belt and the hook may be part of

the wafer.

the baseplate may further comprises an aperture; and optionally the aperture is in

register with the cantilevered hook element.

an underside of the cantilevered hook element may comprises a recess.

PCT/GB2020/053258 - 12 -

In another aspect the present disclosure provides a wafer comprising a belt mount as set

out in any of the above aspects.

Brief description of the drawings

One or more embodiments of the disclosure will now be described, by way of example

only, with reference to the accompanying drawings in which:

Figure 1 illustrates a schematic representation of an ostomy appliance that

comprises a wafer;

Figure 2 is a top view of a wafer that comprises a belt mount having two mounting

rings;

Figure 3 is an enlarged view of a portion of the wafer of Figure 2 showing one of the

mounting rings;

Figure 4 is a perspective view from above of the wafer of Figure 2;

Figure 5 is a cross-sectional view taken on line V-V of Figure 3;

Figure 6 is a perspective view from above of one of the mounting rings of the wafer

of Figure 2;

Figure 7 illustrates a belt which comprises a hook at each end;

Figure 8 illustrates a hook of the belt of Figure 7 attached to one of mounting rings

of the wafer of Figure 2;

Figure 9 illustrates the hook and belt mount of Figure 8 during the process of

inserting the mounting ring into the hook; and

Figure 10 illustrates the hook and belt mount of Figure 8 during the process of

detaching the mounting ring from the hook.

Detailed description of the disclosure

In the following description, the equivalent reference numerals are used in different

embodiments to denote equivalent or similar features.

Unless defined otherwise, all technical and scientific terms used in this specification have

the same meaning as is commonly understood by the reader skilled in the art to which the

claimed subject matter belongs. It is to be understood that the foregoing summary of the

disclosure and the following examples are exemplary and explanatory only and are not

restrictive of any subject matter claimed.

PCT/GB2020/053258 - 13

The following description is directed to embodiments of the disclosure. The description of

the embodiments is not meant to include all the possible embodiments of the disclosure

that are claimed in the appended claims. Many modifications, improvements and

equivalents which are not explicitly recited in the following embodiments may fall within the

scope of the appended claims. Features described as part of one embodiment may be

combined with features of one or more other embodiments unless the context clearly

requires otherwise.

In this specification, the use of the singular includes the plural unless the context clearly

dictates otherwise. In this application, the use of "or" means "and/or" unless stated

otherwise. Furthermore, use of the term "including" as well as other forms, such as

"include", "includes," and "included," is not limiting.

As used herein, ranges and amounts can be expressed as "about" a particular value or

range. About also includes the exact amount. For example, "about 5 mm" means "about 5

mm" and also "5 mm." Generally, the term "about" includes an amount that would be

expected to be within experimental error. The term "about" includes values that are within

10% less to 10% greater of the value provided. For example, "about 50%" means

"between 45% and 55%." Also, by way of example, "about 30" means "between 27 and

33."

Figure 1 illustrates a schematic representation of an ostomy appliance 1 that comprises a wafer 2. The ostomy appliance 1 of Figure 1 is shown, by way of example only, as a closed

appliance. The ostomy appliance 1 may generally comprise an inner wall and an outer

which may be joined together to define a cavity for containing a stomal output. The inner

wall may be provided with a stomal inlet for receiving the stomal output into the cavity. The

stomal inlet may be an aperture that is cut out of the inner wall. The ostomy appliance 1 of

Figure 1 is shown schematically as a one-piece appliance wherein the wafer 2 is

permanently attached to the ostomy appliance 1, to the extent that the wafer 2 cannot

easily be separated without risk of damaging the ostomy appliance 1. However, it is to be

understood that the belt mount of the present disclosure may be used with a wide range of

ostomy appliances and wafers and its use is not limited to those ostomy appliances and

wafers shown in the illustrated examples. Further, the general design and features of an

ostomy appliance 1 will be well known to the person skilled in the art and therefore will not

be described further except where necessary to explain the features of the belt mount of

the present disclosure.

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In the following description the present disclosure will be described, by way of example

only, with one or more mounting rings 11 of the belt mount 5 forming part of the wafer 2

and which are configured to be attached to one or more hooks forming part of a belt 40.

However, it will be appreciated that this configuration may be reversed such that the one or

more hooks are formed as part of the wafer 2 and one or more mounting rings 11 are

formed as part of the belt 40.

Figures 2 to 4 illustrate an example of the wafer 2 comprising a belt mount 5. The wafer 2

comprises a body 3 that may be annular in shape. The body 3 may surround an aperture 4.

The aperture 4 may be aligned in use with the stomal inlet in the inner wall of the ostomy

appliance 1. As best seen in Figure 4, the body 3 may comprise a peripheral region 6

which may be flat and a convex region 7 which may extend upwards out of the plane of the

peripheral region 6. An inner edge of the convex region 7 may define the aperture 4.

The peripheral region 6 may have a width of 6 to 18 mm and a thickness of 0.75 to 1.00

mm, optionally 0.80 mm. The convex region 7 may have a thickness of 1 to 3 mm,

optionally 1.40 mm, 2.00 mm, or 2.65 mm. The aperture 4 may have a diameter of 25 to 60

mm.

The wafer 2 may be provided with the belt mount 5. The belt mount 5 may be integrally

formed as part of the wafer 2 or may be one or more separate components which are

joined to a main part of the wafer 2. The belt mount 5 may comprise one or more mounting

rings 11 (which may also be referred to as 'tabs'). The belt mount 5 may comprise two,

three or more mounting rings 11. The one or more mounting rings 11 may be arranged at

different locations around a circumference of the body 3. Two of the one or more mounting

rings 11 may be disposed opposite one another, for example 180° apart around the

circumference of the body 3. Where a third mounting ring 11 is present this may be located

at an acute angle to one of the other two mounting rings 11 and at an obtuse angle to the

other of the other two mounting rings 11.

Where two or more mounting rings 11 are present they may have the same shape, size

and configuration as each other.

The or each mounting ring 11 may protrude from the body 3. The or each mounting ring 11

may protrude outwards from the body 3. The or each mounting ring 11 may be oriented

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generally along a radial line that extends from a centre of the aperture 4. The or each

mounting ring 11 may generally lie in the plane of the peripheral region 6 as best seen in

Figure 4.

As shown in Figures 2 and 3, the or each mounting ring 11 may comprise a distal end 15

furthest from the body 3 and a proximal end 16 closest to the body 3. The proximal end 16

may directly join or merge with the peripheral region 6 of the body 3. A support region 14

may be defined at or near the proximal end 16 which supports a remainder of the mounting

ring 11 which may extend away from the support region 14 in a cantilevered manner.

The or each mounting ring 11 may comprise a first leg 18 and a second leg 19 which may

extend from the proximal end 16 towards the distal end 15. A proximal end of each of the

first leg 18 and the second leg 19 may be joined to or merge with the support region 14. A

distal end of each of the first leg 18 and the second leg 19 may be joined to or merge with

opposite ends of an end portion 17 of the mounting ring 11. The first leg 18 and the second

leg 19 may both be straight. The end portion 17 may be rounded, optionally semi-circular in

shape. The first leg 18, second leg 19 and end portion 17 may together define a mounting

ring 11 that is D-shaped as most clearly seen in Figure 3. The or each mounting ring 11

may be a unitary part, optionally a unitary moulded part. Optionally, the body 3 and all of

the one or more mounting rings 11 of the wafer may be a unitary part, optionally a unitary

moulded part.

The belt mount 5 may be formed from a flexible material. Optionally the belt mount 5 is

formed from a material that is resilient. Optionally the whole of the wafer 2 including the belt

mount 5 is formed from a flexible and/or resilient material. For example, the material of at

least the belt mount 5 may be a polymer or co-polymer. In one example the material may

be ethylene-vinyl acetate (EVA).

The first leg 18, second leg 19 and end portion 17 may together surround and at least

partially define a mounting aperture 12. The mounting aperture 12 may be elongated in a

radial direction. A width W1 of the mounting aperture 12 may be 4 to 8 mm, optionally 6 mm.

The or each mounting ring 11 may further comprise a tongue 13 as shown in Figure 3. The

tongue 13 may extend from a support portion 23 into the mounting aperture 12. The

support portion 23 may be part of or adjacent the support region 14. The length of the

tongue 13 may be less than a length (in the radial direction) of the mounting aperture 12

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such that a distal end of the tongue 13 does not reach into contact with the end portion 17

of the mounting ring 11. As such, due to the presence of the tongue 13, an available

opening of the mounting aperture 12 may have a length l1 as shown in Figure 3.

Optionally, as shown in the example of Figure 3, the length of the tongue 13 may be less

than 50% of the length of the mounting aperture 12. The distal end of the tongue 13 may

comprise a concave face 24 as seen in Figure 3.

A width of the tongue 13 may be less than a width of the mounting aperture 12 between the

first leg 18 and the second leg 19. A width W3 of the tongue 13 may be 2 to 6 mm,

optionally 4 mm. Thus, a first clearance 20 and a second clearance 21 may be formed

between either side of the tongue 13 and the first leg 18 and the second leg 19. Each

clearance 20, 21 may have a width of 1 mm.

The tongue 13 may be flexible. In particular, the tongue 13 may be flexed about the support

portion 23 such that the distal end of the tongue is moved out of the plane of the mounting

ring 11 as will be described further below.

As seen in Figures 4 and 5, the or each mounting ring 11 may be generally thin. The or

each mounting ring 11 may have the same thickness or a greater thickness than that of the

peripheral region 6. The general thickness of the mounting ring 11 maybe 1.0 to 1.5 mm,

optionally 1.3 mm.

A first face 9 of the or each mounting ring 11 and a second face 10 of the or each mounting

ring 11 may be parallel to one another over a majority of their area. The first leg 18, second

leg 19 and tongue 13 may have the same thickness as each other. A thickness t3 of the

tongue 13 may be 1.0 to 1.5 mm, optionally 1.3 mm. The thickness of the end portion 17 of

the or each mounting ring 11 may be the same as that of the tongue 13 except for the

provision of one or more protrusions 25, 26 as will be described further below.

At least a portion of an inner edge 27 of the or each mounting ring 11 may comprise a

chamfered edge. A chamfer may be provided at an inner edge of the first leg 18, the

second leg 19 and/or the end portion 17. A chamfer may be provided at the first face 9

and/or the second face 10. In the example of Figure 5, a first chamfer 30 is provided at the

first face 9 of the inner edge 27 around the full extent of the first leg 18, the second leg 19

and the end portion 17. The first chamfer 30 may extend around a U-shape. Likewise a

WO wo 2021/123786 PCT/GB2020/053258 - 17 -

second chamfer 31 is provided at the second face 10 of the inner edge 27 around the full

extent of the first leg 18, the second leg 19 and the end portion 17. The second chamfer 31

may extend around a U-shape.

The or each mounting ring 11 may further comprise at least one protrusion 25, 26 that

extends from at least one of the first face 9 and the second face 10 of the or each mounting

ring 11. The or each mounting ring 11 may comprise only a first protrusion 25 that extends

from the first face 9 but no protrusion on the second face 10. Alternatively, the or each

mounting ring 11 may comprise only a second protrusion 26 that extends from the second

face 10 but no protrusion on the first face 9. Alternatively, the or each mounting ring 11

may comprise both a first protrusion 25 that extends from the first face 9 and a second

protrusion 26 that extends from the second face 10, as most clearly seen in the example of

Figure 5. In the later example, optionally the first protrusion 25 and second protrusion 26

are configured as mirror-images of each as reflected in the plane of the mounting ring 11.

Also optionally the first protrusion 25 and second protrusion 26 may be aligned with one

another about a circumference of the mounting ring 11.

As best seen in Figure 5, the thickness t1 of the first protrusion 25 and or the second

protrusion 26 may be 0.4 to 0.6 mm, optionally 0.5 mm. The total thickness t2 of the

mounting ring 11 at the location of the first protrusion 25 and or second protrusion 26 may

be 1.8 to 2.7 mm, optionally 2.3 mm

As most clearly seen in Figure 6, the first protrusion 25 and or the second protrusion 26

may be located at the distal end 15 of the mounting ring 11 and/or at the distal end of the

mounting aperture 12. Optionally, the first protrusion 25 and or the second protrusion 26

may be located opposite the tongue 13. The first protrusion 25 and or the second

protrusion 26 may be located adjacent to the inner edge 27.

The first protrusion 25 and or the second protrusion 26 may each comprise a ramped

surface 32, 33 facing towards the mounting aperture 12. The first protrusion 25 may

comprise a first ramped surface 32 that faces towards the mounting aperture 12. The first

ramped surface 32 may be formed as a smooth continuation of the first chamfer 30 as

shown in Figure 6. Likewise, the second protrusion 26 may comprise a second ramped

surface 33 that faces towards the mounting aperture 12. The second ramped surface 33

may be formed as a smooth continuation of the second chamfer 31.

WO wo 2021/123786 PCT/GB2020/053258 PCT/GB2020/053258 - 18 -

The first protrusion 25 and or the second protrusion 26 may be formed from a compressible

material, optionally a resilient material. The material of the first protrusion 25 and or the

second protrusion 26 may be the same as that of the remainder of the mounting ring 11.

Optionally the first protrusion 25 and or the second protrusion 26 are integrally formed with

a remainder of the mounting ring 11, for example as an integrally moulded part.

The first protrusion 25 and or the second protrusion 26 may have a width no greater than a

width of the tongue 13. The first protrusion 25 and or the second protrusion 26 may have a width that is less than a width of the tongue 13. A width W2 of the first protrusion 25 and or

the second protrusion 26 may be 2.5 to 3.5 mm, optionally 3.0 mm.

Figure 7 illustrates a belt 40 which comprises a strap 41 having a hook 42 at each end.

Each hook 42 may comprise a baseplate 43 and a cantilevered hook element 44. The

cantilevered hook element 44 may comprise a support portion 50 that may have a convex

face 47 and a projecting portion 51 that extends from the support portion 50. The projecting

portion 51 may have a length l2. Optionally the length l2 of the projecting portion 51 is longer

than the length l1 of the available opening of the mounting aperture 12.

A mouth 45 of the hook 42 may be defined between the baseplate 43 and the cantilevered

hook element 44, in particular between the baseplate 43 and the projecting portion of the

cantilevered hook element 44. The hook 42, as shown in Figures 7 and 8, is 'reverse-

directed" in that the mouth 45 of the hook 42 faces away from the wafer 2 when attached to

the belt mount 5 as seen in Figure 8.

The baseplate 43 may comprise an aperture 46. Optionally the aperture 46 is in register

with the cantilevered hook element 44, e.g. located directly below the cantilevered hook

element 44. Optionally the aperture 46 is of the same or substantially the same shape and

size (in plan view) as the cantilevered hook element 44. An underside of the cantilevered

hook element 44 may comprises a recess.

In use, the belt mount 5 may be used for attaching the belt 40 to the wafer 2 of the ostomy

appliance 1. To do so for the illustrated example, the ostomate or user may attach a first

hook 42 of belt 40 to a first mounting ring 11 of the belt mount 5 of the wafer 2, pass the

strap 41 around the torso, limb or other body part of the ostomate, and then attach a

second hook 42 of the belt 40 to a second mounting ring 11 of the belt mount 5 of the wafer

2. The strap 41 may then be tightened as required.

PCT/GB2020/053258 19

The or each mounting ring 11 may be attached to the hook 42 by inserting a portion of the

mounting ring 11 into the mouth 45 of the hook 42 to achieve the state shown in Figure 8.

Insertion may be achieved by inserting the portion of the mounting ring 11 into the mouth

45 of the hook 42 and pulling the hook 42 and the mounting ring 11 away from each other,

due to the hook 42 being reverse-directed. Optionally the portion of the mounting ring 11

that is inserted is the end portion 17. As shown in Figure 9, to insert the end portion 17 of

the mounting ring 11, the wafer 2 may be angled relative to the baseplate 43 and the

mounting ring 11 may be flexed.

The size and shape of the mounting ring 11, for example the thickness of one or more

portions of the mounting ring 11, may be configured relative to the size and shape of the

hook 42 to ensure that there is contact between the mounting ring 11 and the hook 42

when inserting the portion of the mounting ring 11 into the mouth 45 of the hook 42.

The thickness t3 of the first leg 18 and the second leg 19 may be less than a clearance of

the mouth 45. However, the thickness t1 of the first protrusion 25 and or the second

protrusion 26 may result in the total thickness t2 of the mounting ring 11 at the location of

the first protrusion 25 and or second protrusion 26 being greater than the clearance of the

mouth 45. In this way, the first protrusion 25 and or the second protrusion 26 may be

configured to provide a resistance to insertion of the end portion 17 of the mounting ring 11

into the mouth 45 of the hook 42. In particular, during insertion, the first protrusion 25 that

extends from the first face 9 may contact the projecting portion 51 of the cantilevered hook

element 44. Additionally or alternatively, the second protrusion 26 that extends from the

second face 10 may contact the baseplate 43 at or near the aperture 46.

The hook 42 may be engaged with the mounting ring 11 from either side, e.g. with the hook

element 44 entering the mounting aperture 12 from either the side of the first face 9 or from

the side of the second face 10.

The first chamfer 30 and or the second chamfer 31 may ease insertion of the mounting ring

11 into the hook 42.

The projecting portion 51 may make first contact with the first ramped surface 32 of the first

protrusion 25. The angle of the first ramped surface 32 may tend to urge the projecting

WO wo 2021/123786 PCT/GB2020/053258 PCT/GB2020/053258 20 -

portion 51 to flex upwards. Alternatively, the projecting portion 51 may make first contact

with the second ramped surface 33 of the second protrusion 26 when the hook element 44

is attached from the other side of the mounting ring 11. The angle of the second ramped

surface 33 may tend to urge the projecting portion 51 to flex upwards

width of the hook 42.

As best seen in Figure 9, during insertion the tongue 13 may make contact with the hook

element 42 as the end portion 17 is contacted with the projecting portion 51. Optionally, the

tongue 13 may be configured to flex and ride over a back 48 of the projecting portion 51 on

insertion of the end portion 17 of the mounting ring 11 into the mouth 45 of the hook 42.

Optionally this may be due to the length l2 of the projecting portion 51 being longer than the

length l1 of the available opening of the mounting aperture 12.

Overcoming the resistance to insertion provided by the first protrusion 25 and or the

second protrusion 26 may be achieved by the ostomate or user pulling harder on the strap

41. Passage of the end portion 17 into the hook 42 may be accommodated by one or more

of compression of the material of the first protrusion 25 and or the second protrusion 26

and deflection upwards of the projecting portion 51 of the cantilevered hook element 44.

Optionally both the mounting ring 11 and the hook 42 are formed of resilient materials such

that the first protrusion 25 and or the second protrusion 26 and the cantilevered hook

element 44 recover their shapes after insertion. Optionally, at the same time the tongue 13

may complete its passage over the back 48 of the projecting portion 51.

Advantageously, the configuration of the belt mount 5 may produce at least one of a tactile

feedback and an audible feedback signalling successful insertion of the end portion 17 of

the mounting ring 11 into the mouth 45 of the hook 42. The tactile and or audible feedback

may result from one or more of the tongue 13 coming out of contact with the hook element

42, the tongue 13 subsequently hitting the baseplate 43 as it resiliently recovers its shape,

and the end portion 17 'popping through the mouth 45 of the hook element and hitting the

support portion 50 of the hook element 42.

In the attached position, the second protrusion 26 may be received in the aperture 46 of the

baseplate 43. The first protrusion may be received in the recess on the underside of the

cantilevered hook element 44.

wo 2021/123786 WO PCT/GB2020/053258 - 21

In the attached position, the concave face 24 of tongue 13 may also be separated from the

convex face 47 of the hook element 44 by a small gap. This may allow a small amount of

play between the hook 42 and the belt mount 5. However, optionally the gap is small

enough that if the hook 42 and belt mount 5 are simply pulled part the concave face 24 will

contact the convex face 47 while the second protrusion 26 is still received in the aperture

46 of the baseplate 43. Thus, abutment between the concave face 24 and the convex face

47 may act to hinder detachment of the belt mount 5 from the hook 42 by means of a linear

compressive force.

The concave face 24 may be shaped to cooperate with the convex face 47 to guide the

hook 42 in limited rotation within the belt mount 5. For example, a width of the cantilevered

hook element 44 may be less than the width W1 of the mounting aperture 12 so as to

accommodate limited rotation of the hook 42 and the baseplate 43 about an axis extending

perpendicularly to a plane of the mounting ring 11. The limited rotation of the hook 42 and

the baseplate 43 may be guided by contact between the concave face 24 of the tongue 13

and the convex face 47 of the cantilevered hook element 44. Optionally, the limited rotation

of the hook 42 and the baseplate 43 may be constrained by contact between the

cantilevered hook element 44 and the mounting ring 11. For example the rotation may be

constrained by contact of the support portion 50 with the first leg 18 and or second leg 19

of the mounting ring 11.

Detachment of the hook 42 from the mounting ring 11 is shown in Figure 10. Optionally the

wafer 2 and the hook 42 are angled relative to one another, for example by rotating the

wafer 2 and mounting ring 11 around an effective pivot point located at the distal end 15 of

the mounting ring 11 such that the tongue 13 is raised clear of the cantilevered hook

element 44. The hook 42 and the mounting ring 11 may thereafter be separated from one

another by pushing the two components together which causes the end portion 17 of the

mounting ring 11 to be pushed out of the mouth 45. Similar to the process of insertion, the

movement of detachment may be accommodated by one or more of compression of the

material of the first protrusion 25 and or the second protrusion 26 and deflection upwards of

the projecting portion 51 of the cantilevered hook element 44.

Examples The following table presents example configurations of a wafer 2 comprising a belt mount 5

according to the present disclosure. These examples are not intended to be limiting on the

WO wo 2021/123786 PCT/GB2020/053258 - 22 -

present disclosure in any way or to limit the scope of the appended claims. Rather, the

examples are provided to aid a better understanding of the present disclosure.

The examples refer to features described in further detail elsewhere in the present

disclosure. The skilled reader will understand that reference should be made to said further

description where necessary for a fuller understanding of the examples. Where said further

description refers to optional characteristics of said features then the skilled reader will

understand that the following examples may optionally also include one or more of said

optional characteristics.

In the following examples, each mounting ring 11 has a configuration as shown in Figure 3

and comprising:

t1 = 0.5 mm

t2 = 2.3 mm

t3 = 1.3 mm

a thickness of peripheral region 6 = 0.8 mm

W1=6mm W2 = 3 mm

W3 = 4 mm A first protrusion 25 and a second protrusion 26.

In the following examples, each wafer 2 has two opposed mounting rings 11. As an

alternative, the examples may also be provided with a third mounting ring 11 of the same

shape and configuration.

WO wo 2021/123786 PCT/GB2020/053258 PCT/GB2020/053258 - 23 -

Example Maximum Diameter of Width of Diameter of Thickness of

No. dimension body 3 peripheral aperture 4 convex region

between (mm) region 6 (mm) 7 distal ends of (mm) (mm) mounting rings

(mm) 1 115 89 7.5 58 2.00

2 110 80 6.5 48 2.65

3 110 80 11.5 38 2.65

4 110 80 16.5 28 2.65

5 115 89 8 58 1.40

6 110 80 8 48 1.40

7 110 80 8 38 38 1.40

8 110 80 8 28 1.40

Further aspects of the present disclosure are set out in the following clauses.

Clauses:

A1. A belt mount for attaching a belt to a wafer of an ostomy appliance comprising a

mounting ring which can be attached to a hook by inserting a portion of the mounting ring

into a mouth of the hook;

portion of the mounting ring into the mouth of the hook.

A2. A2. The belt mount of clause A1, wherein the at least one protrusion is configured to

provide a resistance to insertion of the portion of the mounting ring into the mouth of the

hook.

A3. A3. The belt mount of clause A2, wherein overcoming the resistance to insertion

provided by the at least one protrusion is configured to produce at least one of a tactile

PCT/GB2020/053258 - 24 -

feedback and an audible feedback signalling successful insertion of the portion of the

mounting ring into the mouth of the hook.

A4. A4. The belt mount of any one of clauses A1 to A3, wherein the mounting ring at least

partially surrounds a mounting aperture.

A5. The belt mount of clause A4, wherein the at least one protrusion is located at a

distal end of the mounting aperture.

A6. The belt mount of clause A4 or clause A5, wherein the at least one protrusion is

located adjacent an inner edge of the mounting ring.

A7. A7. The belt mount of any one of clauses A4 to A6, wherein the at least one protrusion

comprises a ramped surface facing towards the mounting aperture.

A8. A8. The belt mount of any one of clauses A1 to A7, wherein the at least one protrusion

has a width no greater than a width of the hook.

A9. The belt mount of any one of clauses A1 to A8, wherein the at least one protrusion

is formed from a compressible material, preferably a resilient material.

A10. The belt mount of any one of clauses A1 to A9, which comprises only a single

protrusion that extends from the first face of the mounting ring and only a single protrusion

that extends from the second face of the mounting ring.

A11. The belt mount of clause A10, wherein both single protrusions are aligned with one

another about a circumference of the mounting ring.

A12. A system comprising a belt mount as set out in any one of clauses A1 to A11 and a

hook, wherein the hook comprises a baseplate and a cantilevered hook element, wherein a

mouth of the hook is defined between the baseplate and the cantilevered hook element.

A13. The system of clause A12, wherein the at least one protrusion is configured to be

received in an aperture in the baseplate on insertion of the portion of the mounting ring into

the mouth of the hook.

WO wo 2021/123786 PCT/GB2020/053258 - 25 -

A14. The system of clause A13, wherein the at least one protrusion received in the

aperture in the baseplate is a protrusion that extends from the second face of the mounting

ring.

A15. The system of any one of clauses A12 to A14, further comprising a recess on an

underside of the hook element, wherein the at least one protrusion is configured to be

received in the recess on insertion of the portion of the mounting ring into the mouth of the

hook.

A16. The system of clause A15, wherein the at least one protrusion received in the

recess of the hook element is a protrusion that extends from the first face of the mounting

ring.

A17. The system of any one of clauses A12 to A16, wherein a clearance of the mouth

between the baseplate and the cantilevered hook element is less in dimension than a total

thickness of the mounting ring and the at least one projection such that insertion of the

portion of the mounting ring into the mouth of the hook must be accommodated by one or

more of deflection of the cantilevered hook element and compression of the at least one

projection.

B1. A belt mount for attaching a belt to a wafer of an ostomy appliance, the belt mount

comprising a mounting ring which can be attached to a hook by inserting a portion of the

mounting ring into a mouth of the hook and pulling the mounting ring and hook away from

each other;

the mounting ring at least partially surrounding a mounting aperture which

mounting ring into the mouth of the hook;

each other so as to resist detachment of the mounting ring from the hook.

B2. The belt mount of clause B1, wherein the tongue extends in a plane of the mounting

ring.

B3. The belt mount of clause B1 or clause B2, wherein the tongue extends from a

proximal end of the mounting aperture.

B4. The belt mount of any one of clauses B1 to B3, wherein the tongue comprises a

concave end that is contactable with the hook if the mounting ring and the hook are pushed

towards each other.

B5. The belt mount of any one of clauses B1 to B4, further comprising a clearance

either side of tongue and in between the tongue and the mounting ring, and optionally the

tongue is cantilevered from a supporting portion of the belt mount.

B6. The belt mount of any one of clauses B1 to B5, wherein the tongue is flexible.

B7. The belt mount of any one of clauses B1 to B6, wherein the tongue is configured to

flex and ride over a back portion of the hook on insertion of the portion of the mounting ring

into the mouth of the hook.

B8. The belt mount of any one of clauses B1 to B7, further comprising at least one

protrusion that extends from at least one of a first face and a second face of the mounting

ring to contact the hook when inserting the portion of the mounting ring into the mouth of

the hook.

B9. The belt mount of clause B8, wherein the at least one protrusion is located at a

distal end of the mounting ring opposite the tongue.

B10. The belt mount of clause B8 or clause B9, wherein the at least one protrusion is

located adjacent an inner edge of the mounting ring.

B11. The belt mount of any one of clauses B8 to B10, wherein the at least one protrusion

comprises a ramped surface facing towards the mounting aperture.

B12. The belt mount of any one of clauses B8 to B11, wherein the at least one protrusion

has a width no greater than a width of the tongue.

B13. A system comprising a belt mount as set out in any one of clauses B1 to B12 and a

B14. The system of clause B13, wherein a width of the cantilevered hook element is less

than a width of the mounting aperture so as to accommodate limited rotation of the hook

and the baseplate about an axis extending perpendicularly to a plane of the mounting ring.

B15. The system of clause B14, wherein the limited rotation of the hook and the

the cantilevered hook element; and

wherein the limited rotation of the hook and the baseplate is constrained by contact

between the cantilevered hook element and the mounting ring.

C1. C1. A belt mount for attaching a belt to a wafer of an ostomy appliance, the belt mount

each other;

the mounting ring at least partially surrounding a mounting aperture which

mounting ring into the mouth of the hook;

chamfered edge.

C2. C2. The belt mount of clause C1, wherein the chamfered edge is on a first face of the

mounting ring.

C3. The belt mount of clause C1 or clause C2, wherein the chamfered edge comprises

a U-shaped chamfered edge.

C4. C4. The belt mount of any one of clauses C1 to C3, further comprising at least one

the hook.

C5. C5. The belt mount of clause C4, wherein the at least one protrusion is located adjacent

to the chamfered edge of the mounting ring.

C6. C6. The belt mount of clause C4 or clause C5, wherein the at least one protrusion

comprises a ramped surface facing towards the mounting aperture.

WO wo 2021/123786 PCT/GB2020/053258 PCT/GB2020/053258 - 28

C7. The belt mount of clause C6, wherein the ramped surface is formed as a smooth

continuation of the chamfered edge.

C8. C8. A system comprising a belt mount as set out in any one of clauses C1 to C7 and a

C9. The system of clause C8, wherein a clearance of the mouth between the baseplate

and the cantilevered hook element is greater in dimension than a thickness of the

chamfered edge of the mounting ring.

D1. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7, wherein

the mounting aperture is elongated in a radial direction.

D2. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1,

wherein the belt mount is configured to reversibly attach the belt to the wafer.

D3. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D2, wherein the belt mount is formed from a flexible material.

D4. D4. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D3, wherein the mounting ring is configured to be flexed during detachment of the portion

of the mounting ring from the hook.

D5. D5. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D4, wherein the belt mount is formed from a resilient material.

D6. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D5, wherein the mounting ring is configured to be more flexible than the hook.

D7. D7. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D6, wherein the mounting ring is D-shaped.

D8. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D7, wherein the belt mount comprises two or more mounting rings.

WO wo 2021/123786 PCT/GB2020/053258 - 29 -

D9. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D8, wherein the belt mount comprises two opposed mounting rings.

D10. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D9, wherein the belt mount is part of the wafer and the hook is associated with the belt.

D11. A wafer comprising the belt mount of clause D10.

D12. The belt mount of any one or clauses A1 to A11 or B1 to B12 or C1 to C7 or D1 to

D9, wherein the belt mount is associated with the belt and the hook is part of the wafer.

D13. The system of any one of clauses A12 to A17 or B13 to B15 or C8 to C9, wherein

the baseplate further comprises an aperture.

D14. The system of clause D13, wherein the aperture is in register with the cantilevered

hook element.

D15. The system of any one of clauses A12 to A17 or B13 to B15 or C8 to C9 or D13 to

D14, wherein an underside of the cantilevered hook element comprises a recess.

It is to be understood that at least some of the figures and descriptions of the disclosure

have been simplified to focus on elements that are relevant for a clear understanding of the

disclosure, while eliminating, for purposes of clarity, other elements that the reader skilled

in the art will appreciate may also be required. Because such elements are well known to

the reader skilled in the art, and because they do not necessarily facilitate a better

understanding of the disclosure, a description of such elements is not provided herein.

Claims

10 Dec 2025 CLAIMS:

1. A belt mount for attaching a belt to a wafer of an ostomy appliance, the belt mount comprising a mounting ring which can be attached to a hook of the belt by inserting a 5 portion of the mounting ring into a mouth of the hook; the mounting ring comprising at least one protrusion that extends from at least one 2020406856

of a first face and a second face of the mounting ring to contact the hook when inserting the portion of the mounting ring into the mouth of the hook; the at least one protrusion is configured to provide a resistance to insertion of the 10 portion of the mounting ring into the mouth of the hook; overcoming the resistance to insertion provided by the at least one protrusion is configured to produce at least one of a tactile feedback and an audible feedback signaling successful insertion of the portion of the mounting ring into the mouth of the hook, wherein the mounting ring at least partially surrounds a mounting aperture and the 15 at least one protrusion is formed of a compressible material and comprises a ramped surface facing towards the mounting aperture.

2. The belt mount of claim 1, wherein the at least one protrusion is located adjacent an inner edge of the mounting ring. 20

3. The belt mount of claim 1 or claim 2, comprising a first protrusion that extends from the first face of the mounting ring and a second protrusion that extends from the second face of the mounting ring.

25

4. The belt mount of claim 3, wherein both the first and second protrusions are located adjacent to the inner edge.

5. The belt mount of claim 3 or claim 4, wherein the first and second protrusions each comprise a ramped surface facing towards the mounting aperture. 30 6. The belt mount of any one of claims 3 to 5, wherein the first protrusion and second protrusion are configured as mirror-images of each as reflected in the plane of the mounting ring.

10 Dec 2025

7. The belt mount of any one of claims 3 to 6, which comprises only the first protrusion extending from the first face of the mounting ring and only the second protrusion extending from the second face of the mounting ring.

5 8. The belt mount of any of claims 3 to 7, wherein the first and second protrusions are aligned with one another about a circumference of the mounting ring. 2020406856

9. The belt mount of any one of the preceding claims, wherein the at least one protrusion is formed from a resilient material. 10

10. The belt mount of any one of the preceding claims, wherein the mounting ring comprises at least one chamfered edge and the at least one protrusion is located adjacent to the chamfered edge of the mounting ring.

15

11. The belt mount of claim 10, wherein the ramped surface of the at least one protrusion is formed as a smooth continuation of the at least one chamfered edge.

12. The belt mount of any one of the preceding claims, wherein the at least one protrusion has a width no greater than a width of the hook 20

13. The belt mount of any one of the preceding claims, further comprising a tongue that extends into the mounting aperture for contacting the hook if the mounting ring and the hook are subsequently pushed towards each other so as to resist detachment of the mounting ring from the hook, wherein the at least one protrusion is located at a distal end 25 of the mounting ring opposite the tongue.

14. The belt mount of claim 13, wherein the tongue extends in a plane that is parallel with a face of the mounting ring.

30 15. The belt mount of claim 13 or claim 14, wherein the tongue comprises a concave end that is contactable with the hook if the mounting ring and the hook are pushed towards each other.

16. The belt mount of any one of claims 13 to 15, further comprising a clearance either 35 side of the tongue and in between the tongue and the mounting ring, and the tongue is cantilevered from a supporting portion of the belt mount.

10 Dec 2025

17. The belt mount of any one of claims 13 to 16, wherein the tongue is configured to flex and ride over a back portion of the hook on insertion of the portion of the mounting ring into the mouth of the hook. 5

18. A system comprising the belt mount as claimed in any one of the preceding claims, 2020406856

and the hook, wherein the hook comprises a baseplate and a cantilevered hook element, wherein the mouth of the hook is defined between the baseplate and the cantilevered hook element. 10

19. The system of claim 18, wherein a width of the cantilevered hook element is less than a width of the mounting aperture so as to accommodate limited rotation of the hook and the baseplate about an axis extending perpendicularly to a plane of the mounting ring.

15

20. The system of claim 19, wherein the belt mount comprises a tongue that extends into the mounting aperture for contacting the hook if the mounting ring and the hook are subsequently pushed towards each other so as to resist detachment of the mounting ring from the hook, and the limited rotation of the hook and the baseplate is guided by contact between a concave end of the tongue and a convex face of the cantilevered hook element; 20 and wherein the limited rotation of the hook and the baseplate is constrained by contact between the cantilevered hook element and the mounting ring.

21. The system of any of claims 18 to 19, wherein the belt mount comprises a tongue 25 that extends into the mounting aperture for contacting the hook if the mounting ring and the hook are subsequently pushed towards each other so as to resist detachment of the mounting ring from the hook, and wherein the tongue is configured to contact the baseplate to cause at least one of a tactile feedback and an audible feedback as the tongue recovers its shape upon successful insertion of the portion of the mounting ring into the mouth of the 30 hook.

22. The system of any one of claims 18 to 21, wherein the hook further comprises a recess on an underside of the cantilevered hook element, wherein the at least one protrusion is configured to be received in the recess on insertion of the portion of the 35 mounting ring into the mouth of the hook.

10 Dec 2025

23. The system of claim 22, wherein the at least one protrusion comprises a first protrusion that extends from a first face of the mounting ring and is configured to be received in the recess on insertion of the portion of the mounting ring into the mouth of the hook and a second protrusion that extends from a second face of the mounting ring and is 5 configured to be received in an aperture in the baseplate on insertion of the portion of the mounting ring into the mouth of the hook. 2020406856

24. The system of any one of claims 18 to 23, wherein a clearance of the mouth between the baseplate and the cantilevered hook element is less in dimension than a total 10 thickness of the mounting ring and the at least one protrusion such that insertion of the portion of the mounting ring into the mouth of the hook must be accommodated by one or more of deflection of the cantilevered hook element and compression of the at least one protrusion.