GB2503946A

GB2503946A - An assembly for draining liquid from a receptacle

Info

Publication number: GB2503946A
Application number: GB1212561.3A
Authority: GB
Inventors: Christopher Huw Douglas Mallet
Original assignee: Biomimetics Health Industries Ltd
Current assignee: Biomimetics Health Industries Ltd
Priority date: 2012-07-13
Filing date: 2012-07-13
Publication date: 2014-01-15
Also published as: GB201212561D0

Abstract

The invention relates to an assembly for draining liquid from a receptacle (22 figure 1). The assembly comprises an impermeable seal (25 figure 2) for closing an aperture in the receptacle, a first connector means 35 fixed relative to the receptacle, an opening means 52 for opening the seal, and a second connector means 32 for connecting to the first connector means. When the second connector means is operated to connect to the first connector means, the opening means ruptures the seal. The first and second connector means preferably have corresponding threads. A later embodiment relates to a receptacle for bathing an end portion of a limb, where the liquid may have a therapeutic effect.

Description

ASSEMBLY FOR DRAINING LIQUID FROM A RECEPTACLE AND

METHOD OF DRAINING

Field of the Invention

The invention relates to an assembly for draining of liquid from a receptacle, particularly from a receptacle for use in treatment of damaged skin or a wound.

The invention also relates to a method of draining of liquid from a receptacle.

Background

Skin damage or wounds, for example cuts, abrasions, lesions, bums including flash bums, and ulcers, are common problems. Infection of such damaged skin or wounds may occur. Leg ulceration can bc particularly problematic. The most common type of leg ulcer is a venous leg ulcer. The amount of money spent on care of patients with leg ulceration is high.

Treatment of leg ulcers usually involves cleaning and dressing the wound and using compression bandages to control the blood pressure inside the legs. There is a high risk of recurrence of certain kinds of ulcer, for example a venous leg ulcer.

There is a general need for effective means for treatment of leg ulcers to assist healing and prevent recurrence of infection.

It is necessary to treat patients in a various enviroments, not only in hospitals.

For example, it is sometimes necessary to treat patients in their homes. It is generally difficult to transport a suitable limb bath into which the patient's ankle can be easily located into a home. It is also generally difficult to manipulate large volumes of treatment liquid, in a hospital or elsewhere. Disposal of a limb bath and/or the used liquid is problematic. The filled limb bath is heavy and the liquid is unhygienic; the liquid may in particular have bodily particulate matter therein.

A known document, GB2465866, discloses a limb bath having a frame that rethasably holds a disposabk hag. There are various drawbacks to this limb bath.

The limb bath is bulky. Thus it is difficuli to move around and disadvantageously takes up a large volume of space. It is also awkward to fill and empty the limb bath with liquid since a large volume of liquid is required. Splash may also inconveniently occur.

Another known document, W02004/07 1373, discloses a wheelable boot-shaped device having a hollow interior large enough to allow entry of a foot. This device is inconvenient to transport outside a hospital, requires preparation of a large amount of liqLlid to adeqLlately fill it, and does not allow for convenient disposal of the liquid, at least outside a hospital. Inconveniently, it requires cleaning after use particularly since bodily particulate matter may be present on the interior.

It is an object of the present invention to address at least some of these drawbacks.

Summary of the Invention

According to a first aspect of the present invention, there is provided an assembly for draining of liquid from a receptacle, comprising an impermeable seal for closing an aperture in the receptacle, a first connector means fixedly disposed relative to the receptacle; an opening means for opening the seal, and a second connector means for connecting to the first connector means, whereby operating of the second connector means to connect to the first connector means causes the opening means to open the seal.

The assembly advantageously enables easy drainage of the receptacle. The assembly is particularly useful for drainage of a receptacle for treatment of an end portion of a limb with a therapeutic liquid. The assembly prevents splash of the liquid after treatment. Further, if the receptacle is such that it must be opened in order for the end portion of a limb to be removed, the assembly prevents spillage since liquid can first be drained.

The opening means may be attached to or formed with the second connector means. The opening means may comprise at least one rupturing means for rupturing the seal, wherein operating the second connector means to connect to the first connector means causes the at least one rupturing means to rupture the seal.

There is preferably a plurality of rupturing means, for example four.

The or each rupturing means is preferably arranged to produce an arcuate or circular cut in the seal.

The first connector means may be integrally formed with the receptacle or attached to the receptacle.

Preferably, the first and second connector means each has a passageway therethrough, the first and second connector means are sealingly arranged with respect to the aperture so that when the seal is open, liquid inside the receptacle drains through the passageways of the first and second connector means.

Conveniently, when the opening means is caused to open the seal, the first and second connector means are connected such that draining liquid cannot egress between the first and second connector means.

The first and second connector means each comprise a correspondingly threaded sleeve and the second connector means can be operated to connect to the first connector means by screw engagement of the respective sleeves. The passageways through the first and second connector means are respectively through the sleeve of the first and second connector means.

The assembly may further comprise a connector piece having an inlet and an outlet and a passage therethrough, wherein the inlet of the connector piece is linked to the second connector means so that liquid drains through the passage, and the linking of the connector piece to the second connector means is such that operating the second connector means to connect to the first connector means does not cause rotation of the connector piece. The connector piece may be rotatable in said passageway of the second connector piece substantially coaxially with respect to the second conncctor means. Thus connecting of the second connector means to the first connector means by screw engagement does not require the connector piece to tam. Thus, if another part is connected to the outlet of the connector piece, that part in turn need not rotate.

The connector piece may be located so that at least a portion of the connector piece including the inlet is located in the passageway of the second connector means and the connector piece and the second connector means are respectively shaped and configured so that draining liquid flows through the passage of the connector piece.

Preferably, the connector piece and the second connector means may be respectively shaped to prevent the inlet of the connector piece escaping from an end of the second connector means remote from the seal. At least the outlet of the connector piece may extend from the second end of the second connector means.

The assembly may further comprise a bag for storing drained liquid and bag connect means for connecting the bag to second connector means so that liquid draining from an outlet thereof drains into the bag. The bag connect means may comprise a tubing connected between the outlet and the bag to carry the drained liquid to the bag.

The bag is preferably detachable and includes means for sealing after detachment,

for example a clip.

The assembly may further comprise a tap having a tap inlet, a tap outlet, and a valve operable to allow or prevent flow of liquid from the inlet to the outlet, wherein the tap inlet is connected to the outlet of the connector piece, and wherein, when the valve prevents flow of liquid, draining of liquid through the valve is prevented. The bag connect means may be connected to the tap outlet, wherein the valve is thereby operable to prevent or allow draining of liquid from the receptacle into the bag There may be further provided apparatus comprising a receptacle and an assembly as described above, wherein the receptacle is for containing liquid and comprises the seal in a wall thereof The receptacle may be reconfigurable between first and second configurations, wherein in the second configuration an end portion of the limb cannot be inserted or cannot be inserted without application of pressure to the end portion, wherein in the first configuration the end portion and the receptacle can be respectively disposed, substantially without application of pressure to the end portion, so that the receptacle can be reconfigured to the second configuration with the end portion located in the receptacle, substantially without application of pressure to the end portion. In other words, the receptacle may be openable and be open in the first configuration to enable location of an end portion of a limb in the receptacle, and be closed in the second configuration so that the receptacle forms a liquid-tight receptacle suitable for bathing of an end portion. After a limb has been bathed in a liquid, the liquid may be conveniently drained before the receptacle is opened to enable removal of the end portion. If the liquid is not drained, the liquid would inconveniently spill on opening the receptacle. The interior surface of the receptacle, when in the second configuration, may approximately corresponds in shape to the shape of the end portion. By "pressure", it should be understood that the pressure is sufficient to cause discomfort or further damage.

In accordance with the present invention, there is further provided a method of draining a receptacle having an aperture in a wall thereof and an openable seal closing the aperture, comprising operating a second connector means to connect to a first conncctor means, thc first connector means being fixedly disposcd relative to the receptacle, wherein said operating causes an opening means to open the seal.

S

Before operating the second connector means to connect to the first connector means, a bag for storing drained liquid may be attached to the second connector means to rcceive liquid drained from the receptacle, and the method may further comprise sealing the bag after liquid from the receptacle has been drained into the bag. The bag may be sealed after liquid from the receptacle has been drained into the bag. The bag can then be conveniently disposed of The method may use the assembly described above.

According to the present invention, there is yet further provided a receptacle for treatment of the end portion of a limb with a liquid, including a single-use valve for draining the liquid. The interior surface of the receptacle may approximately correspond in shape to the shape of the end portion of a limb. The receptacle may further comprise a bag for receiving drained liquid, connected to the single-use valve to receive liquid on opening of the valve According to the present invention, there is furthenTiore provided a liquid-tight receptacle for treatment of an end portion of a limb, the receptacle being suitable for receipt of a liquid and having an interior surface approximately corresponding in shape to the shape of the end portion of a limb, wherein the receptacle can be opened to facilitate removal of the end portion from the receptacle, wherein the receptacle comprising a drainage valve to enable drainage before opening. The drainage valve may comprise an aperture in a wall of the receptacle closed by an openable seal of the assembly, wherein the first connector means is attached to the receptacle.

Brief Description of Figures

For better understanding of the invention, embodiments will now be described, by way of example only, in which: Figure 1 is a perspective view of a receptacle for receiving an end portion of a limb and having parts of a valve assembly; Figure 2 is a perspective view of parts of a valve assembly in accordance with an embodiment attached to a side of an interior wall of the receptacle; Figure 3, 4 and 5 are respectively a perspective exploded view, another exploded perspective view seen from the rear, and a side view of the valve assembly including first and second connector elements; Figures 6, 7, 8 and 9 are respectively a perspective, end, side, and another perspective views of the second connector element; and Figures 10, 11 and 12 are perspective, underside, perspective and side views of the valve assembly when the second connector element is connected to the first connector element.

Detailed Description of Embodiments

Referring to Figure 1, parts 20 of a valve assembly are attached to a boot-shaped receptacle 22 to close an aperture (not shown) in the receptacle. The parts 20 are located at a wall of the receptacle 22 near its heel, so that drainage can occur under gravity. The boot-shaped receptacle 22 is suitable for receiving and bathing an end portion of a leg (not shown), for example for treatment of an end portion which has skin damage or a wound.

The receptacle 22 has a first, closed configuration and a second, open configuration. In the first configuration the device is a liquid-tight receptacle and can have an end portion of a limb located inside. An end portion cannot be inserted into the receptacle 22, or at least cannot be inserted without application of prcssurc to thc cnd portion or considcraHc flcxing of the cnd portion. In this configuration with an end portion inside a therapeutic liquid can be added to bath the end portion.

The receptacle 22 is reconfigurable to the second configuration for insertion or removal of the end portion. In the second configuration, the end portion can be located in and removed substantially without application of pressure to the end portion of the limb, that is, with the pressure being sufficiently low so that if the end portion of the limb is damaged, no or little discomfort or further damage will be caused. In other words, the liquid-tight receptacle 22 is openable to allow comfortable locating of the end portion in the receptacle 22 and removal therefrom.

In order to reconfigure the receptacle, the receptacle 22 has a zipper 23 allowing opening and closing of the receptacle 22 so that the end portion of a leg can be located in and removed from the receptacle 22. In alternatives, the receptacle may have means other than a zipper for reconfiguring (opening and closing) the receptacle. A receptacle to this design and other receptacles in which the drainage valve 20 may be incorporated is disclosed in patent application number GBI2I 1724.8 (Biomimetics Health Tndustries (UK) Ltd, entitled "A Device for Treating an End Portion of a Limb and Use thereof'), which is herein incorporated by reference.

Embodiments of the invention can be used for drainage of a receptacle of any form, not only a receptacle that is boot-shaped or otherwise shaped to correspond to the contours of an end portion of a limb. Embodiments are also not limited to use in drainage of a liquid that has been used for therapeutic purposes -the valve assembly to be described may be used to drain other kinds of liquid.

The receptacle 22 comprises the parts 20 so that the liquid can be drained before opening the receptacle 22. During the reconfiguring (unzipping) of the receptacle so as to allow removal, there is not therefore splash and spillage, Turning to Figure 2, a part of the material of the boot-shaped receptacle 22 is illustrated as wall 23. The parts 20 of the valve assembly on the receptacle 22 comprise a rear plate 24, an impermeable rupturable seal in the form of a sheet 25 and a first connector element (not visible in Figure 2). The rupturable sheet 25 is affixed to an interior side of the receptacle wall 23 to close an aperture in the wall 23 of the receptacle 22. The rupturable sheet 25 is bonded to the material of the wall around the periphery of the aperture to create an impermeable seal to prevent egress of liquid from the receptacle 22. The sheet can be otherwise fixed to close the aperture. The rear plate 24 is fixed over the rupturable sheet 25, by bonding or otherwise.

In alternative embodiments, the rear plate may be absent.

The valve assembly comprises the first connector element, the rupturable sheet 25 and the rear plate 24, and, referring to Figures 3, 4 and 5, also a second connector element 32 and a connector 34.

The first connector element, indicated at 35, comprises an annular front plate 36 having an inner edge, and a cylindrical sleeve 38 extending from the inner edge so as to provide a passage through the first connector element 35. The sleeve 38 has an external thread.

Referring additionally to Figures 6 to 9. the second connector element 32 comprises an outer sleeve 40 having an internal screw thread 42 arranged to engage with the thread of the cylindrical sleeve 38 of the first connector element 35. A circumferential surface of the outer sleeve 40 has raised sections 44 longitudinal with respect to the axis of the sleeve 40 for easy gripping.

The second connector element 32 has first and second ends best seen in Figure 8 in which the first end is in the plane indicated by A-A and the second end is in the plane indicated by B-B. At the second end, a flange extends from the outer sleeve radially inwardly forming an annulus 46 having an opening 48 therein. A cylindrical tube 50 extends from the annulus 46 towards the first end A-A concentrically with the outer sleeve 40. Four rupturing means in the form of cutting elements 52 extend from the end of the cylindrical tube 50 remote from the annulus 46 so as to protrude from the first end of the second connector element 32.

The cutting elements 52 are arcuate, the curvature of the arcs being coaxial with the curvature of the cyIindrica tube 50.

Returning to Figures 3 to 5, the connector 34 comprises a cylindrical tube having first and second coaxial sections 54, 56 of two different external diameters. A passageway 33 extends through the sections 54, 56. The first section 54 has a larger diameter than the second section 56. An annular stop surface 58 bridges the circumferential cylindrical surfaces of the first and second sections 54, 56. The first and second sections 54, 56 have smaller diameters than the internal diameter of the cylindrical tube 50.

The diameter of the first section 54 is larger than the inner edge 47 of the annulus 46, while the diameter of the second section 56 is smaller than the inner edge 47 of the annulus 46. Accordingly, the second section 56 can extend through the opening 48 in the annulus 46, whilst the first section 54 cannot.

Referring to Figures 10 to 12, the second connector element 32 is connected to the first connector element 35 by screw engagement of the respective screw threads of the first and second connector elements 32, 35. The sleeve 38 of the first connector element is thus within the sleeve of the second connector element 32.

The cylindrical tube 50 and the cutting elements 52 are together sized so that when the first and second connector elements 32 are engaged to a predetermined extent, the cutting elements 52 extend from the first end A-A of the second connector element 32 beyond a rear side of the front plate 60 and beyond the rupturable sheet 30. The valve assembly is arranged so that when the first and second connector elements 32, 35 are engaged to the extent that the cutting elements 52 rupture the rupturablc shect 30, liquid cannot sccp out between the first and second connector elements 32, 35.

A portion of the second section 56 of the connector 34 protrudes from the opening 48 in the annulus 46 and may form an outlet to another part or to the environment.

Preferably a first end of a tube is joined to the connector 34, for example by an adhesive resistant to the liquid, to receive drained liquid. A second end of the tube is preferably connected to a drainage bag (not shown), although the tube may extend directly to a suitable drainage area such as a sink or drain.

Although not essential, a liquid-tight bag is preferably provided equipped with means operable to seal the bag after liquid has been drained into it. Such means may be in the form a clip.

Operation of the valve assembly to drain the receptacle 22 containing liquid will now be described. The second connector element 32 is operated to connect to the first connector element so that the connector 34 protrudes through the opening 48 in a screwing action. As the second connector element 32 is turned, the sleeve 38 of the first connector element 35 extends into the sleeve of the second connector element 32 and the cutting elements 52 extend into the sleeve 38 in a helical manner and extend beyond the sleeve 38 so as to rupture the rupturable sheet 25 in an arcuate cutting action. Before the second connector element 32 is turned to the extent that the cutting elements rupture the rupturable sheet 25, the first and second connector elements 32, 35 are sufficiently engaged such that liquid will not seep out between them. After the rupturable sheet 25 is ruptured, liquid inside the receptacle 22 will drain through the passageway in the first and second connector elements 32, 35 and the connector 34. Preferably the cutting elements 52 produce arcuate cuts that join to form a cut-out in the rupturable sheet 25.

The liquid then drains into the bag. The valve assembly and the receptacle may be disposed of in their entirety. In alternative embodiments, the hag is detached from the connector 34, then sealed and disposed of The valve assembly is preferably made entirely of thermoplastic elastomer (TPE) for ease of recychng. A suitabk type of TPE is 1-lytrel TPC-ET (code 7246) made by Dupont. Another suitable material is Desmopan TPU (code DP3072D) made by Bayer.

The first connector element may be joined to the receptacle in an ovemioulding process. The seal may also be provided over the aperture of the receptacle in an overmoulding process.

When the valve assembly is used with the boot-shaped receptacle 22 described above for fteatment of an end portion of a leg with therapeutic liquid, prior steps that take place before the valve assembly is used are now described.

Suitable liquid is prepared. The liquid is preferably a hypochlorous acid (}-IOC1) solution at a skin neutral pH, which is particularly effective at disinfecting wounds and aiding the healing process, but other kinds of Hquid are suitaHe. When in the open configuration with the zipper undone, the end portion is located in the receptacle 22. The receptacle 22 is then closed by a zipping action. The receptacle 22 is then partially or wholly filled with the therapeutic liquid. The end portion of the limb is then bathed in the therapeutic liquid for a predetermined period of time.

At the end of the period, the liquid is drained using the valve assembly in the manner already described into a bag. The zipper 23 is then operated to release the end portion. The patient's leg is then removed from the receptacle. The limb of the patient is then dried and a compression bandage is applied by a carer. The receptacle and the bag are disposed of It will be appreciated by the person skilled in the art that various modifications can he made to the embodiments described above.

An end of a tubing may connect to the outlet of the connector to carry liquid from the connector. The other end of the tubing may connect to a liquid-tight bag so that liquid can into drain into the bag. Alternatively, the tubing may take the liquid elsewhere, for example to a drain.

A tap may connect to the outlet of the connector. The tap may have a valve having an open position in which liquid is allowed to drain and a closed position in which drainage is prevented. The tap is operable to change between the open and closed positions. Advantageously, when the tap is connected to the connector 34 and the second connector element is operated to connect to the first connector element, liquid will not drain beyond the valve when the valve is in the closed position. Therefore, conveniently, the second connector means can be connected to the first connector means before a bag has been attached. Also, advantageously, when the bag is connected to the outlet of the tap, operation of the valve to a closed position seals the bag to prevent escape of liquid.

It is not essential for there to be a rupturable sheet affixed to an interior side of a receptacle to cover an aperture. The rupturable sheet may instead be located on the outside of the receptacle, or be affixed in the material of the receptacle.

Alternatively, the rupturable sheet can be formed of the material of the receptacle, typically a portion that is thinner than surrounding material. The rear plate may be absent.

The applicant hereby discloses in isolation each individual feature or step described herein and any combination of two or more such features or steps, to the extent that such features or steps or combinations are capable of being carried out based on the present specification as a whole in the light of the common general knowledge of a person skilled in the art, irrespective of whether such features or steps or combinations of features or steps solve any problems disclosed herein, and without limitation to the scope of the claims. The applicant indicates that aspects of the present invention may consist of any such individual feature or steps or combination of features. In view of the foregoing description it will be evident to a person skilled in the art that various modifications may be made within the scope of the invention.

Claims

CLAIMS1. An assembly for draining of liquid from a receptacle, comprising: an impermeable seal for closing an aperture in the receptacle; a first connector means fixedly disposed relative to the receptacle; an opening means for opening the seal; a second connector means for connecting to the first connector means, whereby operating of the second connector means to connect to the first connector means causes the opening means to open the seal.
2. An assembly according to claim 1, wherein the opening means comprises at least one rupturing means for rupturing the seal, wherein operating the second connector means to connect to the first connector means causes the at least one rupturing means to rupture the seal.
3. An assembly according to claim 2, wherein the or each rupturing means is arranged to provide an arcuate or circdar cut in the seal.
4. An assemNy according to any one of the preceding claims, wherein: the first and second connector means each has a passageway therethrough, the first and second connector means are sealingly arranged with respect to the aperture so that when the first and second connector means are connected, liquid inside the receptacle drains through the passageways through the first and second connector means.
5. An assembly according to claim 4, wherein when the opening mcans is caused to open the seal, the first and second connector means are connected such that draining liquid cannot egrcss betwccn the first and second connector means.
6. An assembly according to any one of thc prcccding claims, wherein the first and sccond connector means each comprise a correspondingly threaded sleeve and the second connector means can be operated to connect to the first connector means by screw engagement of the respective sleeves.
7. An assembly according to dairn 6, ftirther comprising a connector piece having an inlet and an outlet and a passage therethroitgh, wherein: the inlet of the connector piece is linked to the second connector means so that liquid drains through the passage, and the linking of the connector piece to the second connector means is such that operating the second connector means to connect to the first connector means does not cause rotation of the connector piece.
8. An assembly according to claim 7, wherein the connector piece is located so that at least a portion of the connector piece including the inlet is located in the passageway of the second connector means and the connector piece and the second connector means are respectively shaped and configured so that draining liquid flows through the passage of the connector piece.
9. An assembly according to claim 8, wherein the connector piece and the second connector means are respectively shaped to prevent the inlet of the connector piece escaping from an end of the second connector means remote from the seal.
10. An assembly according to any one of claims 7 to 9, wherein at least the outlet of the connector piece extends from the second end of the second connector means.
11. An assembly according to claim 10, further comprising a bag for storing drained liquid and bag connect means for connecting the bag to the outlet of the connector piece so that liquid drains into the hag.
12. An assembly according to claim 11, wherein the bag connect means comprises a tubing connected between the outlet and the bag to carry the drained liquid to the bag.
13. An assembly according to claim 11 or claim 12, wherein the bag is detachable from the second connector means and includes means for sealing after detachment.
14. An assembly according to any one of claims 7 to 13, further comprising a tap having a tap inlet, a tap outlet, and a valve operable to allow or prevent flow of liquid from the inlet to the outlet, wherein the tap inlet is connected to the outlet of the connector piece, and wherein, when the valve prevents flow of liquid, draining of liquid through the valve is prevented.
15. An assembly according to claim 14, wherein the bag connect means is connected to the tap outlet, wherein the valve is thereby operable to prevent or allow draining of liquid from the receptacle into the bag.
16. An arrangement comprising a receptacle and an assembly according to any one of claims 1 to 15, wherein the receptacle is for containing liquid and comprises the seal in a wall thereof
17. A method of draining a receptacle having an aperture in a wall thereof and an openable seal closing the aperture, comprising operating a second connector means to connect to a first connector means, the first connector means being fixedly disposed relative to the receptacle, wherein said operating causes an opening means to open the seal.
18. A method according to claim 16, wherein a bag for storing drained liquid is attached to the second connector means to receive liquid drained from the receptacle, further comprising sealing the bag after liquid from the receptacle has been drained into the bag.
19. A method according to claim 17 or claim 18, using the assembly of any one of claims Ito 16.
20. A receptacle for treatment of the end portion of a limb with a liquid, including a single-use valve for draining the liquid.
21. A receptacle according to claim 20 wherein the interior surface of the receptacle approximately corresponds in shape to the shape of the end portion of a limb.
22. A receptacle according to claim 20 or claim 21, further comprising a bag for receiving drained liquid, connected to the single-use valve to receive liquid on opening of the valve.
23. A receptacle for treatment of an end portion of a limb, the receptacle being a liquid-tight and suitable for receipt of a liquid and having an interior surface approximately corresponding in shape to the shape of the end portion of a limb, wherein the receptacle can be opened to facilitate removal of the end portion from the receptacle, wherein the receptacle comprising a drainage valve to enable drainage before opening.
24. Apparatus comprising a receptacle according to claim 23 and an assembly for draining of liquid from the receptacle, according to any one of claims 1 to 15.the drainage valve comprising an openable seal closing an aperture in a wall of the receptacle.
25. An assembly for draining of liquid from a receptacle, substantially as hereinbefore described with reference to the accompanying drawings.
26. A method of draining liquid from a receptacle, substantially as hereinbefore described with reference to the accompanying drawings.
27. An arrangement comprising a receptacle and an assembly, substantially as bereinbefore described with reference to the accompanying drawings.