GB2408458A - A device for applying a tactile stimulus - Google Patents

Abstract

A device for applying a tactile stimulus, comprising a flexible adhesive substrate with one or more raised elements on its surface, the substrate being fastenable, by virtue of the adhesive, onto and/or around a human finger. The substrate may comprise a strap which is fastenable to form a flexible sleeve of variable circumference so as to accommodate, at least partially, a human finger. An alternative such device comprises a flexible strap with raised element(s) on its surface, the strap having fastening means by which it can be fastened to form a variable circumference flexible finger sleeve. Such devices are of particular use in the treatment of female orgasmic disorders and may be used to apply a fluid substance as well as a tactile stimulus.

Description

A Device for Appling Tactile Stimulus The present invention relates to

devices for use in applying a tactile stimulus, in particular to the body.

The devices may for instance be used to stimulate sensitive tissue areas such as erectile tissue (in particular the clitoris) or the so-called Grafenberg ("G-spot") region of the vagina, and hence are especially suitable for use in the treatment of the syndrome known as female orgasmic disorder.

W0-02/39945 describes an applicator/stimulator device which may be used in the treatment of female orgasmic disorder (there referred to as female sexual arousal lo disorder), and which facilitates the manual application, to the genital area, of a tactile stimulus together with a lubricant fluid and/or a pharmaceutically active substance such as a vasodilator. The device of W0-02/39945 takes the form of a flexible finger sleeve having one or more fluid-containing cells and preferably also projections to provide additional tactile stimulation. The fluid cell(s) are preferably sealed before use, but i 5 rupture under pressure to release the fluid.

Such a sleeve must be manufactured to a specific size, whereas the sizes of users' fingers may vary considerably, for instance with gender and race. Although the sleeve may be made from a resilient material such as rubber which may allow, inherently, a degree of variation in size, nevertheless it can be difficult to achieve a sufficiently good fit, for all No potential users, to give the desired control and sensitivity during use.

Our co-pending PCT patent application no. PCT/GB2003/004073 describes a stimulator and/or applicator device comprising a flexible finger sleeve with one or more raised elements on its outer surface and one or more further distinguishing features, in particular at least one sleeve region which has a greater flexibility than that of the rest of the sleeve, so as to provide variability in the size (in particular the circumference) of the sleeve.

The present invention provides alternative forms of such fingerrwom devices, which again may be used to apply a tactile stimulus and optionally also to deliver fluid(s) and/or other substance(s) to the stimulated area.

According to a first aspect of the present invention there is provided a device of use in applying a tactile stimulus, the device comprising a flexible strap having one or more raised elements on its surface, the strap being fastenable to form a flexible sleeve of variable circumference which is adapted to accommodate, at least partially, a finger.

This device thus has an "open" coruSguration, in which at least the strap part of it is essentially a two-dimensional structure, and enclosed" sleeve-lace configuration in which the device can accommodate a user's finger. By "sleeve" in this context is meant a housing of a shape and size suitable to accommodate at least part of a finger, but which may not necessarily totally enclose the finger or part thereof Thus in its simplest form the "closed" sleeve may comprise a band adapted to encircle part of the finger (typically By.

that part which is adjacent and/or extends to the distal finger end), such a sleeve may be closed, but will more typically be open, at the distal end.

The sleeve may be capable of accommodating (de, fitting around) more than one finger, typically two fingers, for instance a user's middle and index fingers.

In this specification, the terms "distal end" and "proximal end" refer to the in-use device, the distal end thus being that which in use will house the free end of the wearer's finger.

The word "finger" is intended also to include a thumb, and typically refers to a human digit, either male or female.

The sleeve should cover, when worn, at least the underside of the wearer's finger end, or lo a substantial part thereof (eg, 80 % or preferably 90 % or more of its surface area). This "finger tip" region, typically bounded by the wearer's distal finger joint, generally represents the most sensitive and controllable area of the finger and will therefore provide the primary region of tactile stimulation. The strap is conveniently fastenable in that region which in use corresponds to the upper side of the wearer's finger (de, the back of the finger), suitably in the middle portion (de, that region between the distal and proximal finger joints) or at least in a region closer to the distal than to the proximal end of the finger.

The fastened sleeve will typically have an approximately circular transverse cross section. In use it will preferably overlay the sides of the wearer's finger (at least in the finger tip region), and desirably (although not necessarily) the finger end itself Ideally it will extend, when worn, to a position between the wearer's distal and proximal finger joints.

The size and shape of the sleeve, ie, the device of the invention in its "closed" configuration, may of course depend on those of the finger(s) it is intended to accommodate, although the device inherently provides a good degree of size variability and hence can be adapted to fit a range of finger sizes and shapes.

A typical sleeve length, for instance for a European or North American user, might be from 40 to 80 mm, more suitably from 45 to 75 mm. More preferably the sleeve will be of a length, at least at that face corresponding to the under side (palm side) of the wearer's finger in use, such as to accommodate only the finger tip, is, the finger end region bounded by the distal finger joint, in which case a suitable under side sleeve length might be from 25 to 35 mm, more suitably from 25 to 30 mm.

The length of the sleeve may vary around its circumference; it may for example be longer at that face corresponding in use to the upper side (back) of the wearer's finger, with its opposite face overlaying only the finger tip region, ie, extending only from the finger end to the distal finger joint. At its longest the sleeve might suitably be up to 90 mm in length, such as from 40 to 90 mm, preferably from 45 to 60 mm, and at its shortest (corresponding typically to the under side of the wearer's finger) from 15 to 50 mm, preferably from 20 to 35 or 45 mm, in length.

Such lengths may be measured from the far distal end of the sleeve, suitably along its outer surface (which is typically also along the wearer's finger). Alternatively they may be measured along the central longitudinal sleeve axis. References in this specification to percentages of overall sleeve length may be taken to relate to the length at the longest part of the sleeve, or to the length at the side (typically the under side) where the raised element(s) are located.

A suitable sleeve circumference may vary along the sleeve length, being conveniently greater (for instance from 49 or 50 to 65 or 71 mm, preferably from 55 to 60 mm) at the position corresponding to the wearer's proximal finger joint and smaller (for instance lo from 40 to 55 or 60 mm, preferably from 45 to 53 mm) at the distal joint position if the fastened sleeve extends to that point. The circumference may taper to a yet smaller value closer to and at the distal end of the sleeve. Again these figures are for a EuropeanlNorth American population and may vary for other populations; smaller dimensions may for example be appropriate for South East Asian and other user groups. The fastenable s1rap like configuration of the device of the invention allows its circumference to vary to fit all regions of a wearer's finger snugly.

Suitably the sleeve circumference (measured for instance at a position, in use, between the wearer's distal and proximal finger joints) is variable from 30 to 80 mm, more preferably from 50 to 65 mm, most preferably from 55 to 60 mm. If intended to zo accommodate more than one finger, its circumference will need to be correspondingly greater, for instance variable from 60 to 120 mm, preferably from 70 to lOO mm.

Agam, these dimensions are typical for European or North American users; smaller sleeve sizes may be appropriate for other user groups.

Unless otherwise stated, sleeve dimensions quoted in this specification relate to the sleeve in its closed configuration, ie, when fastened around a wearer's fnger(s).

By "variable circumference", in the context of the present invention, is meant that the strap can be fastened to form a sleeve having any of a range of different possible circumferences. Thus there may be two or more, preferably a plurality of, different possible sleeve circumferences, and ideally the circumference is continuously variable between its maximum and minimum values. It may, but need not necessarily, be variable even after the strap has been fastened into its closed configuration.

The sleeve may be shaped at its distal end to accommodate a finger nail, or otherwise profiled to increase the wearer's comfort, to improve fit and/or to enhance its aesthetic appearance. However it need not necessarily cover, or even extend as far as, the user's finger end.

The shape of the strap should be chosen so as to give the desired sleeve shape when the strap is fastened into its closed configuration. Suitably the strap comprises a central portion flanked on either side by wing portions which are fastenable together, and/or are fastenable to the central portion, so as to form the sleeve.

The central portion conveniently carries the one or more raised elements. When the device is worn in its closed, sleeve-like configuration, its central portion then suitably corresponds in position to the "finger tip" region described above.

The wing portions are preferably at an angle with respect to the longitudinal axis of the intended sleeve configuration and/or to the axis represented by the wearer's finger in use.

They may for instance be at an angle to the relevant axis (measured in the open, typically flat, configuration of the strap) of from 80 to 30, more preferably from 70 to 20., so that when fastened together in use they increase the overall length of the sleeve, extending further towards the user's proximal finger joint than does the central portion.

lo Altemative configurations are of course possible, for instance one in which an elongate strip is attached to a main strap portion, the main portion carrying the raised element(s) and the elongate strip being fastenable either to itself or to the main strap portion so as to create the closed, sleeve-like configuration. Altematively a central portion may have more than two adjacent wing portions, one or more of which is fastenable, again in an adjustable position, either to another wing or to the central portion.

In such devices, the wing portions may be formed separately from the main or central strap portion and secured to it for instance by heat sealing, glueing or sewing.

Alternatively they may be integral with the main strap portion. The main strap portion need not itself be flexible so long as the device overall (typically its wing portions) has no the requisite flexibility.

The strap which forms the basis of a device according to the invention, or at least part(s) thereof such as its wing portions where applicable, is preferably made from a flexible and ideally elastic material such as a fabric, paper or foil or more preferably a natural or synthetic rubber or plastics material.

2s In a preferred embodiment, the strap (or at least its wing portions) is made from an inherently self-a&esive material, ie, one which will adhere to itself. Yet more preferably it is made from a material which has an inherent adhesiveness towards living tissue, in particular skin. Still more preferably the material is gas permeable, but ideally also liquid impermeable. Its adhesiveness may be due to its chemical composition andior to an adhesive layer present, for instance as a coating or laminate, at its surface.

Suitable such materials include the plastics commercially available for instance as Quick2Heal Transparent Film Plaster (Robinson Healthcare, Chesterfield, UK), or the 3MrM medical grade tapes. Use of such materials ensures a good fit around the wearer's finger and also discourages re-use of the device as the fastened strap will typically have as to be destroyed to remove it after use.

Other adhesives suitable for use in this context, for instance for application to a plastics or textile strap, are well known and used in conventional sticking plasters and other wound dressings. Examples include acrylic adhesives such as those comprising an alkyl (meth)acrylate; rubber adhesives comprising for instance polyisobutylene, polyisoprene, polybutadiene, a styrene-isoprene(or butadiene)-styrene block copolymer or the eke; vinyl ether adhesives such as those comprising a vinyl alkyl ether; and silicone adhesives such as those comprising polyorganosiloxanes. Other specific examples include adhesives based on acrylate ester copolymers, polyvinyl ethyl ether or polyurethane, as described for example in GB-1 280 631; polyether polyol adhesives such as that available as LEVAGEL1M; and adhesive compositions such as those described in W0-02/03898, EP-O 130 061 and EP-O 092 999 which comprise blends of water soluble hydrocolloids and low molecular weight polyisobutylenes.

Such adhesives may be pressure sensitive. They are preferably moisture vapour transmitting. They may be applied to the strap surface in a continuous or discontinuous lo (for instance to allow moisture transmission) layer. A suitable thickness for an applied adhesive layer is from 20 to 100 1lm. The adhesives are preferably not irritating to human skin and medically acceptable.

A strap made from an adhesive material may carry an additional layer of another material, which may be attached to the adhesive material in any suitable manner, for s instance to impart additional structure.

The material from which the strap or at least its wing portions is made is preferably transparent or translucent. Conveniently it is manually tearable, for instance to aid its removal after use. Its thickness may suitably be from 0.01 to 1 mm, more preferably fromO.ltoO.5mm.

Because of its intended use, the strap is preferably made from non-toxic, more preferably pharmaceutical grade, materials. Adhesives present on or inherent in the strap are ideally sufficiently safe and durable as to be suitable for contact with, ideally adhesion to, the skin for a period of 15 minutes or more, preferably 30 or 60 minutes or more, for instance when in contact with bodily fluids such as vaginal secretions. Since the pH of vaginal 2s secretions varies during periods of sexual activity, typically between about 4.5 and 7.5, the adhesives should retain effectiveness within such pH ranges at least for the above described time periods. Such adhesives are preferably releasable, and are ideally easy and painless to remove from the sldn after use.

The strap, or relevant portions of it, may be formed by cutting a sheet of a suitable so material to the desired shape. Straps or strap portions may also be produced from plastics materials or rubber by injection, compression or dip moulding, by injection blow moulding, by casting or by vacuum forming. Such processes may also be used to achieve profiling of the strap surface, including the provision of raised element(s) and if desired indented fluid cells as described below.

as Alternatively, the raised element(s) may be formed in or on a separate substrate which is then secured to the strap and may for example correspond to the main or central strap portion as described above.

In a device according to the invention, the strap should carry a fastener or fastening means by which it may be fastened into its closed conformation with at least a degree of do variability in the circumference of the resultant sleeve. The fastening means may be He releasable so as to allow, for instance, the strap to be unfastened after use, and may be reuseable so as to allow the strap to be re-fastened for example into a sleeve of a different circumference. However, more preferably the fastening means is non-releasable so that in order to remove the fastened device from the finger, the wearer needs to destroy the fastening, thus encouraging its disposal after use, as might in the context be appropriate.

To facilitate its removal after use, and ideally also to prevent or at least discourage re-use, the device may comprise a tearable portion which may be torn away, either partially or completely, from the rest of the strap. This portion may be defined at least partly by a region of reduced strap strength, along which the strap will tear, and/or where a tear can i o originate, on application of an appropriate force. The region of reduced strap strength may be formed by a boundary between two strap regions of differing flexibility, thickness and/or strength. Alternatively it may take the form of scoring or perforations in the strap, or of a region formed from a reduced strength (conveniently, reduced thickness) material.

A reduced strength region conveniently extends in a longitudinal or approximately s longitudinal direction, ie, it is orientated substantially in the direction of the finger in use.

It may however extend around the circumference of the fastened sleeve, for instance allowing the distal end of the sleeve to be torn away from the remainder when pulled in the longitudinal direction. It may, at a point where it meets an open edge of the sleeve, terminate in a cut or notch or other break in the strap fabric.

Suitably the device has at least two reduced strength regions, radially spaced around the fastened sleeve.

Ideally once the fastened sleeve has been torn along such a reduced strength region, it will no longer fit accurately around the wearer's finger, thus rendering the device effectively a single-use product.

In a particularly preferred embodiment of the invention, at least part of the strap is formed from a self-adhesive material of the type described above. Self-adhesive portions are then preferably protected by a releasable (typically peel-off) covering layer for instance of paper, fabric, foil or plastics film, as in standard commercially available sticking plasters for example, to prevent adhesion prior to use.

The fastening means may comprise an adhesive applied to at least one portion of the strap. Again the adhesive may be protected by a releasable (typically peel-off) covering layer. It will typically be a low-tack adhesive such as those used in plasters, and may be applied for instance by a spray coating or dipping or printing process - the preferred properties of the adhesive may be as described above in connection with preferred strap materials.

Other forms of fastening means may include hook-and-loop types of interengageable fasteners (including VelcrolM and analogous products), snatogether fastenings, buckles and the like.

The fastening means is preferably located at or near to one of the ends of the strap, for do instance at or near the end of one of the "wing" portions in the above described constructions. Fastening means, or interacting components of fastening means, may be provided at or near each of two or more free strap ends, so as to allow yet more variability in size for the closed configuration.

The one or more raised elements of the device of the invention help to provide tactile shmulation during use. By "raised element" is meant an element which protrudes above the surface of the strap, and which will therefore protrude above the outer surface of the sleeve formed from the strap, typically in a direction substantially perpendicular to that of the longitudinal sleeve axis and/or to the plane of the outer sleeve surface at the relevant point. It preferably protrudes by at least 1 mm, more preferably at least 2 or 3 or even 3.5 o mm, from the outer sleeve surface. Suitably a raised element has a rigid or semi-rigid form, to aid the provision of tactile stimulation.

The number, size, shape and location of the raised element(s) will depend on the intended use of the device, for instance the nature and degree of stimulation it is intended to provide and the aesthetic qualities required of it. Where the device is intended primarily for use in stimulating the clitoris for the treatment of female orgasmic disorder, then a loop-like arrangement of several raised elements, as described in more detail below, may be appropriate. Where it is intended for internal use, for example inside the vagina (which again may be of use in treating female orgasmic order), then a smaller number of raised elements may be more appropriate, and/or the raised element(s) may be smaller in size and/or less rigid in structure, than those described below in connection with clitoral stimulation, and/or they may be positioned differently on the device, for example in a manner designed to aid stimulation of the Grafenberg ("G-spot") region at the anterior wall of the vagina.

Generally speaking, there may be a single raised element, appropriately sized and shaped and located, or alternatively there may be a plurality of raised elements, for instance two or more, typically more than two, preferably four or six or more, more preferably from six to ten, most preferably eight. The raised element(s) are conveniently located at or near the distal end of the fastened sleeve.

Particularly when intended for use in stimulating the clitoris, the raised element(s) are preferably arranged in a loop, more preferably a rounded (de, non-angular) loop, yet more preferably in the shape of an ellipse, circle, ovaL "lozenge" or rounded-end rectangle as opposed to in a linear or angular (eg, classically rectangular) array. This can provide a number of advantages as discussed below, as well as improving the device aesthetically.

The diameter of the loop may for instance range from 10 to 30 mm, more suitably from 15 to 30 mm, where the loop is elongate, these figures typically relate to the longest dimension. The loop may be formed from a plurality of individual raised elements, or for instance by a single continuous raised element in the shape of a loop.

As mentioned above at least some, and ideally all, or most (for instance, 70 or 80 % or more), of the raised element(s) are preferably located in that region of the device which do corresponds, in use, to the under side of the wearer's finger end, ie, to the "finger tip" region.

Ideally, at least one raised element or part thereof is located in that region of the sleeve surface defined by the first 30 %, preferably the first 28 or 25 or 22 or 20 or even 18 or 16 or 15 %, of the overall sleeve length measured from its distal end at the under side (palm side) of the wearer's finger. There is preferably more than one, most preferably 2 or 3 or more, raised elements in the defined region of the sleeve. However where the sleeve carries only one raised element, it may be preferred for at least 4 %, more preferably at least 5 or 6 %, of the volume of that element (by which is meant the volume which protrudes beyond the outer sleeve surface) to be located in the defined region.

Typically the defined distal end region, containing the at least one raised element or part to thereof, will occupy a length of from 5 to 15 mm, more typically from 6 to 12 or from 7 to 10 mm, measured in use from the distal end of the sleeve or (particularly when the sleeve does not reach the finger end in use) from the wearer's finger end.

There may then be at least 2, preferably 3 raised elements or parts thereof in the region deemed by the first 40 %, more preferably the first 30 or 25 % of the overall sleeve length as defined above.

It may be preferable for there to be no raised elements at the far distal end of the fastened sleeve, or at least in use for there to be no raised elements at the wearer's distal finger end. For instance, there are ideally no raised elements within the first 4 or 5 or even 7 % of the overall sleeve length or within 2 or 3 or 4 mm of the distal sleeve end (or the JO wearer's finger end). In particular it may be preferable for there to be no raised elements extending beyond the distal end of the sleeve such as in a direction generally parallel to that of the longitudinal sleeve axis.

Conveniently there will be no raised elements in any region of the sleeve which extends, in use, beyond the wearer's proximal finger joint in the direction of the palm of the hand, as at least on the under side of the sleeve. Thus, there are suitably raised element(s) only in the region (again, at least on the under side of the sleeve in use) which corresponds to the wearer's finger tip, is, the distal region bounded by the wearer's distal finger joint - this region may occupy a length of for instance from 25 to 40 mr4 typically from 28 to 35 mr4 such as of about 30 mm, measured from the distal end of the sleeve or from the wearer's finger end. Leaving the proximal end of the finger free of raised elements on its under side can improve flexibility and comfort during use, in particular leaving the wearer's proximal and preferably also distal finger joints free to flex, and ideally also avoiding undesired contact with regions of the body not intended to be stimulated.

A preferred form of raised element takes the form of a dome-like projection or nodule, as for instance of approximately frustoonical or approximately spherical shape or being at least hemispherical at its free end. Its height, above the strap surface, may be from 3 to 6 or 7 mm, preferably from 4 or 4.5 to 5 mm. Its diameter, at the strap surface, may be from 2.5 or 3 to 5 mm, preferably from 4 to 4.5 mm. As mentioned above, smaller raised elements may be appropriate if the device is intended for internal use.

do Where there are two or more raised elements, they may all have the same size and shape or they may differ, and they may be equally or unequally spaced. A t.,vpical spacing between raised elements, at the strap surface, might be from 2 to 6 mm or from 2 to 5.5 mm, such as about 4 mm - this may mean a spacing between the centres of raised elements (measured for instance at their free ends) of from 4 to 10 mm, preferably from 5 to 10 mm.

When intended for G-spot stimulation, the raised element(s) may take the form of raised "bubbles" or "blisters", for instance approximately hemispherical in shape or at least convex above the strap surface. They may be closer together, for instance with spacings between raised elements (at the strap surface) of less than 3 or 2 or even I mm. They may take the form of an array of for instance ridges or "ripples", or of individual lo protuberances which may be approximately circular or oval or of any other desired shape.

In other words, the raised element(s) may generally provide surface profiling or texturing adapted to stimulate the slightly rough-surfaced Gspot region.

In a preferred embodiment of the invention, the raised element(s) define a blank region of the fastened sleeve surface which carries no raised elements. More preferably, the s arrangement of raised elements comprises two groups each of at least one and preferably two or more raised elements, the two groups being positioned to either side of the blank region. These two groups of raised element(s) are preferably spaced apart circumferentially around the sleeve surface by the blank region.

The blank region is preferably located so that, in use, it corresponds to the central region of the palm side of the wearer's finger tip. It is preferably at least 4 mm, more preferably at least 5 or 6 mm wide (de, around the sleeve circumference, typically between the two groups of raised element(s)), for instance up to 7 or 8 or 9 mm wide. This may correspond to a width of at least % of the sleeve circumference at that point, preferably at least 8 or 10 %, such as up to 15 or 20 or 25 %. The outside width of the blank region 2s (de, measured between the outer edges of the two groups of raised element(s)) may typically range from 10 to 30 mm, more suitably from 15 to 30 mm.

The blank region may be bounded at either or both of its longitudinal ends by one or more raised elements. If bounded at both ends, its length(measured in a direction parallel to the longitudinal sleeve axis, and inside the defining raised elements) may be so from 10 to 25 mm, preferably from 12 to 23 mm, such as from 15 to 22 mm, suitably about 19 mm. Its length may therefore correspond to from 30 to 65 % of the overall sleeve length measured on the under side of the finger, preferably from 40 to 60 % or from 45 to 55 %.

Where there are two groups of raised element(s) which define the blank region between them, each may comprise a row of raised elements, for instance running parallel or approximately parallel to the longitudinal sleeve axis (de, to the axis of the wearer's finger). Each group may comprise two or more, preferably three or more, raised elements. Alternatively a "group" may consist of a single raised element, for instance of elongate form to mimic a row of individual elements.

do Thus the blank region may for example have an approximately rectangular shape, ideally with rounded ends, or a "lozenge" shape, or an approximately oval or elliptical or circular a).

shape, bounded by raised elements. It is preferably surrounded by a loop of raised elements, the two "groups" of raised elements constituting two sides of the loop.

Such arrangements of raised elements, providing a blank region on the sleeve surface, can be particularly advantageous when the device of the invention is to be used to apply a tactile stimulus to the clitoris, more particularly when treating female orgasmic disorder.

Whilst the raised elements to either side of the blank region can be used to stimulate the clitoral shaft and the regions immediately surrounding the clitoris, the clitoris itself, which is often highly sensitive and in some patients (for instance, menopausal women) painfully so, can be protected from undue direct stimulation. The raised elements are o ideally shaped and arranged so that, in use, they can surround but suitably not contact the tip of the clitoris. /

Moreover the provision of two groups of raised elements, for instance in two spaced apart rows, can in use simulate, using only one finger, the tactile stimuli which would ordinarily require use of two fingers, thus enhancing the effectiveness of the device.

The raised element(s) may not only provide tactile stimulation but also serve to define a trap which, when the device is used to apply a fluid substance such as a lubricant or a pharmaceutically active substance, helps to retain that substance in the region to which it is intended to be applied, thus reducing wastage and enhancing ease of use. By "fluid retaining region" is meant a region in which a quantity of fluid, such as a lubricant or an zo active substance-containing fluid, may be at least partially trapped, at least when the device is held in an approximately horizontal orientation with its raised element(s) uppermost.

The fluid retaining region should be defined at least partly by the raised element(s) on the strap, and preferably takes the form of an open- topped enclosure bound by the raised element(s) and the outer strap surface; in other words, the fluid retaining region may be completely defined by the raised element(s) (ideally 2 or 3 or 5 or more of them, more preferably all of them) and the outer strap surface. The strap surface in the fluid retaining region is conveniently substantially flat as opposed to for instance recessed or indented, and may be such that in the absence of the raised element(s) it would not serve, in use, to trap fluid at all.

Preferably the fluid retaining region occupies the entire area within a loop formed by the raised element(s). A preferred arrangement of raised element(s) is therefore one which encircles the fluid retaining region, for instance in the approximate shape of an ellipse, circle, oval, "lozenge" or rounded-end rectangle. The fluid retaining region may be the same as, or correspond at least pardy with, a blank region of the fastened sleeve surface of the type described above.

A single raised element in the form of a closed loop may serve to define the fluid retaining region within its perimeter. Alternatively two or more of the raised elements may be close enough together to inhibit, ideally prevent, the escape of fluid from a region do they surround. As a yet further alternative there may be secondary raised element(s), typically protruding less far above the strap surface, positioned between primary raised elements so that the primary and secondary elements together define a continuous fluid retaining wall. The height of such secondary raised elements, above the sleeve surface, might suitably be from 0.5 or 1 to 2 mm, such as from 1.2 to 1.5 mm.

When the device is for use primarily to aid G-spot stimulation, it may be appropriate for the raised element(s) to occupy a continuous (either regular or irregular) array on the relevant part of the strap surface, or at least for there to be no blank region deemed within the outermost raised element(s). A fluid trap may in this case be unnecessary, although by virtue of the surface profiling they provide, the raised element(s) may in any case serve at least partially to trap fluid in their vicinity.

lo The raised element(s) are conveniently formed as an integral part of a substrate such as a natural or synthetic rubber of plastics material; as mentioned above, this substrate may be integral with or separate from the rest of the strap. It may be flexible, semi-rigid or (less preferably) rigid; suitable substrate materials include polyurethane, polypropylene, silicon and thermoplastic elastomers, preferably the latter. Ideally this material has a thickness and rigidity sufficient to retain a degree of structure unsupported, yet is sufficiently flexible (andfor is suitably shaped) to allow it to fit comfortably around the wearer's finger tip and to flex with the finger in use. It is ideally also sufficiently thin, including in combination with the strap portion of the device when secured to it, as to allow the user to retain at least a degree of tactile sensitivity in the region corresponding, in use, to the under side finger tip.

A suitable hardness for the substrate material is Shore A, for instance from 20 or 25 to 55 or 60 , more typically from 25 or 30 to 35 or 40 or 45, such as about 30. (eg, from 28 to 32 , ideally from 28 to 30 ). Again this substrate, and the raised element(s), are preferably made from a non-toxic, more preferably pharmaceutical grade, material.

as Such a substrate may be produced by injection or dip moulding, by injection blow moulding, by casting or by vacuum forming. The same processes, ideally at the same time, may be used to form the raised element(s) in or on the substrate and to achieve any other desired profiling for the surface of the device of the invention. The raised element(s) are thus ideally formed as an integral part of the substrate, and the substrate so may be secured to the rest of the strap for example by glueing or welding or stitching.

Such a substrate may then form the central portion of a device of the type described above. By way of example, a centrally positioned raised element-carrying substrate may be attached to two or more wing portions, by glueing or by making use of the inherently adhesive nature of the material from which the wing portions are made. A further substrate may be attached to the raised element-carying substrate, for instance to impart additional structure or to protect the wearer, examples including foam backing pads and plastics barrier layers.

Alternatively the raised element(s) may be formed as an integral part of the main strap body, again typically by moulding, casting or vacuum forming. As a yet further do alternative, the raised element(s) may be produced separately and secured to a substrate or directly to the strap surface for instance by glueing or welding.

The raised element(s) may be of a greater rigidity than the strap, and indeed than any substrate carrying them, to aid the provision of tactile stimulation. This may for example be achieved, if the raised element(s) are to be formed in a substrate wall, by increasing the thickness of the substrate at the raised element(s), or more preferably by moulding the raised element(s) as solid or substantially solid (as opposed to hollow) elements.

One or more, preferably all, of the raised elements may however be made more flexible, depending on user requirements, by forming them from a less rigid and/or thinner material and/or by compromising their structural integrity in some way. For example, they may be at least partially hollow or they may be cut away or split for example at their o free ends. A hollow raised element may simply comprise a concave or otherwise recessed region, such as a cut out channel, conveniently either at its free (outer) end or at its base where it meets the sdap or substrate surface, or it may comprise a hollow channel running through the element for instance from its free end to its base.

More flexible raised elements may for example be appropriate if the device is intended s for internal use.

Again, not all raised elements on the device need have the same structure or rigidity.

The strap which forms the basis of a device according to the invention may be provided on, for instance secured to by glueing or by welding, a pre-formed finger sleeve, such that the strap may be fastened around the sleeve so as to vary its effective circumference. The sleeve may in particular be of the type described in our co-pending PCT patent A second aspect of the present invention provides a device of use in applying a tactile stimulus, the device comprising one or more raised elements on a base substrate made from an adhesive material, the device being adapted to fit onto and/or around at least part of a human finger, in particular the finger tip.

Such a device essentially takes the form of a "sticking plaster" which may be applied to a finger to allow the raised elements provided on it to be used to apply, by means of the finger, a tactile stimulus to another surface.

By "adhesive material" in this context is meant a material which is inherently (whether because of its own composition or due to a coating or laminate or other treatment applied to it) adhesive and will therefore adhere to a surface such as in particular living tissue, more particularly skin. This adhesion is preferably temporary, is, releasable, but is ideally sufficiently strong to allow the device to be used, applied to a human finger, to apply a tactile stimulus for a period of at least 15, preferably at least 30, more preferably as at least 60 minutes and also preferably when in contact, during that use, with bodily fluids such as vaginal secretions. During such periods, as discussed above, the adhesion should remain effective within a pH range of about 4.5 to 7.5, ideally even when the device is used internally. The adhesive material is ideally easy and painless to remove from the skin after use.

Especially suitable adhesive materials, for use as the base substrate, are those described above in connection with the first aspect of the invention. Alternatively an adhesive layer may be applied to a less adhesive substrate, the layer being applied by conventional processes such as spraying, printing or dipping or by larninabng an additional adhesive layer onto one surface of the substrate. The adhesive is suitably a low-tack adhesive for instance of the type used in plasters, again as described in connection with the first aspect of the invention.

The adhesive base substrate, or part(s) thereof, may carry releasable (typically peel-off) protective layers such as of paper or foil or plastics materials, as described above.

lo The base substrate may be of any desired size and shape but is ideally sufficiently large to cover at least part of (preferably at least 50 % or at least 75 or 80 % of, more preferably all of) the above defined "finger tip" region of the wearer's finger. It may cover only the finger tip, extending for instance from the distal finger end to the distal finger joint, and it may cover, in use, only the under side of the finger. It may be sufficiently large as to Is cover at least part of two or more fingers, typically the wearer's middle and index fingers.

Typical base substrate dimensions, intended for application to one finger, might be 200 mm x 10-20 mm.

In its simplest form, the base substrate may be flat, ie, essentially twodimensional.

Alternatively, it may be shaped (for example, moulded) into a threeimensional conformation so as more closely to fit around the finger (typically the finger end). It may for example be curved at one end so as to follow, at least partially, the curve of a wearer's finger tip. A particularly preferred embodiment has a slipper-like configuration at its distal end, so as to slip over the finger tip and ideally at least partly enclose the distal finger end. It may also have curved edges designed at least partially to cover the sides of the user's finger.

Thus, the base substrate may be rigid or semi-rigid, retaining its own structure unsupported, or (more preferably) it may take its structure partly or even wholly from any surface to which it is applied, here typically from the wearer's finger, as does a conventional sticking plaster.

Preferred features of the raised element(s), in particular regarding their structure and arrangement on the base substrate, may be as described above in connection with the first aspect of the invention. The raised element(s) may be formed in the base substrate itself, or formed separately and secured to me base substrate, eider directly or indirectly via a secondary supporting substrate, again as described above. Additional supporting and/or protecting materials may be included in the device, for example absorbent and/or cushioning pads located between the raised element(s) and the base substrate.

The base substrate, and ideally also the raised element(s) and any omer profiling or texturing desired on its surface(s), may again be fanned by injection or other forms of moulding, by casting or by vacuum forming. An adhesive layer may be applied to the do surface of me base substrate material prior to forming it into the desired final shape.

A device according to the second aspect of the invention can be relatively compact and unobtrusive and can hence maximise sensitivity and control during use. It may be particularly suitable for internal use, for instance inside the vagina, more particularly to stimulate the so-called "G-spot''. Its raised element(s) may be structured and positioned accordingly, in the manner described above.

A device according to the second aspect of the invention may, but need not necessarily, be fastenable in a complete or partial band around the wearer's finger(s), for instance by fastening (typically adhesion) of one portion of the base substrate to another. Thus, for example, the device may take the form of a strap in accordance with the first aspect of the o invention, so long as it incorporates an adhesive substrate which carries one or more raised elements. The device may incorporate wing-like portions which in use extend at least partially around the circumference of the wearer's finger(s), although these "wings" need not necessarily fasten to one another or to any other part of the device but may simply adhere directly to the wearer's skin. Thus, the device may be designed to encircle t5 the wearer's finger(s) only partially when in a "closed" configuration, ie, it may take the form of a strap the ends of which do not actually fasten together even when the device is As for the device according to the first aspect of the invention, that of the second aspect may incorporate one or more reduced strength base substrate regions which function as zo "tear-lines" along which the device may be torn, either completely or partially, so as to aid its removal after use.

A device according to either the first or the second aspect of the present invention may be used to apply substances to an area of stimulation, typical examples being lubricants and pharmaceutically active substances, in particular those which may be of use in the treatment of female orgasmic disorder such as vasoactive compounds (eg, vasodilators), nerve stimulants and anti-irritants. Thus, the device may be for use as an applicator as well as a stimulator.

In its simplest mode of use, the desired substance is applied to the device from an external source, before the device is brought into contact with the treatment area. The device may be packaged in combination with such a substance, preferably with instructions for their use together.

However, the device may itself be adapted to deliver a desired substance. It may for instance incorporate one or more cells which contain the substance and which are adapted to release it during use - typical examples are the fluid-containing cells described in Wry as 02/39945 in which a fluid is retained by a seal which is preferably openable or rupturable when pressure is applied across it and/or when the seal is in contact with an environment (for instance, a particular temperature or pH or moisture level) which weakens it. Such cells may be attached to or more preferably defined in the strap or substrate surface, for instance as indentations, again as described in W 02/39945, and are preferably located with or in the immediate vicinity of the raised element(s) which provide the tactile stimulation. One or more of the raised elements may also function as a fluid-releasing cell.

The substance may be contained in such cells in any appropriate form such as a solution, suspension, cream, paste or gel.

The device of the invention may carry on one or more of the strap or substrate surfaces a substance such as a lubricant (in particular a silicone-based lubricant, although many s other suitable types are commonly available), a pharmaceutical active (in particular a vasodilator) or an aroma containing substance (particularly an aroma based on human pheromones). The material from which the strap or substrate is made may itself be coated with a lubricating substance, for instance a siliconebased or other lubricant of the type often used on the surfaces of male condoms. Such lubricant coatings can be applied to for instance by spraying.

Generally a device according to the invention allows the manual application of a tactile stimulus (optionally together with a substance such as a lubricant) to any area of a patient's body in need thereof, and hence can be used to treat any condition which requires for its alleviation or cure the application of such a tactile stimulus to a part of the body, in particular female orgasmic disorder. The device may be used by the patient her or himself, or by another. The user may be either male or female.

Devices according to the invention will typically be designed for a single use and to be disposable after use.

The devices may also be used for non-therapeutic, eg, cosmetic, purposes, including for instance to apply tactile pressure to any surface not necessarily on a living body.

A third aspect of the present invention provides the use of a device according to the first or the second aspect, to apply tactile stimulation for instance to the body, and/or to apply a substance, in particular a fluid, to a surface in particular to living tissue.

The present invention also provides the use of a device according to the first or the 2s second aspect, in the treatment of female orgasmic disorder or a related condition. It further provides a method of treating female orgasmic disorder or a related condition, which comprises applying a tactile stimulus to the genital area of a patient using a device according to the first or second aspect of the invention, and optionally also applying, using the device, a lubricant and/or an active substance to the stimulated area. Again the so treatment may be carried out by the patient herself, or by another person such as the patient's sexual partner.

The condition being treated may be any condition the symptoms of which include inability to attain, or consistently to attain, orgasm, or slowness to attain orgasm, or failure to attain a sufficiently satisfying orgasm.

as Still further the invention provides a device according to the first or the second aspect, for use in the treatment of a medical condition, in particular female orgasmic disorder or a related condition.

A plurality of devices according to the invention may be packaged and supplied together.

For example, two or more devices may be adhered to a peel-offbacking substrate such as a paper or plastics sheet, for removal and use individually. A further aspect of the present invention provides a package comprising a plurality of devices according to the first or second aspects, presented for instance in this manner.

The present invention will now be described by way of example only and with reference to the accompanying illustrative drawings, of which: Fig I is a plan view of a device according to the first aspect of the invention; Fig 2 is a side view of the Fig 1 device; Fig 3 is an inverted section taken along the line III-III in Fig 1; Figs 4 and S are perspective'views of the device of Figs I to 3, in use on a wearer's lo finger; Fig 6 is a perspective view of a device which accords with both the first and the second aspects of the invention, again shown in use; Fig 7 is a plan view of a device according to the second aspect of the invention; Fig 8 is a side view of the Fig 7 device; Fig 9 is a perspective view of the Fig 7 device in use on a wearer's finger; Figs 10 and 11 are longitudinal sections through parts of further alternative devices according to the invention; and Fig 12 is a plan view of another device according to the invention.

All figures are schematic.

Referring firstly to Figs 1 and 2, the stimulator device shown comprises a strap generally labelled 1 having a central portion 2 and two adjacent "wings" 3, 4. The strap is formed from a membrane substrate 5, as seen in Fig 3, of a flexible polyurethane type material.

Figs 2, 3 and 4 show how the central portion 2 is shaped at its distal end 13 so as to follow the curve of the wearer's finger end.

The "inner" surfaces of the wings 3,4 carry adhesive in the regions 6,7 respectively which enable them to be fastened together. In this case a coating of a low-tack adhesive has been applied to the substrate 5, as seen in Fig 3, for instance by spraying or painting. Fig 1 indicates the positions corresponding to the adhesive regions on the inner surfaces of the wings.

Prior to use, the adhesive regions are provided with peel-offpaper or plastics sheets (not shown in the figures).

The "wing" portions 3,4 may alternatively be made from a self-adhesive plastics material such as one of the medical grade tapes available from EM, which also adheres to human skin. Again prior to use such a material is conveniently provided with peel-off protective layers. Wing portions made from such a material may be fastened to the central portion 2 by means of their natural adhesiveness or in any other convenient way.

The central portion 2 of the device carries on its outer surface a secondary substrate 8 made from a resilient injection moulded thermoplastic elastomer (eg, hardness about 30 Shore A). This secondary substrate carries a series of eight projections 9 arranged in an oval or approximately oval shaped loop. These projections are generally frustoconical in lo shape and approximately hemispherical at their free ends. They are formed during the moulding process and are solid, as can be seen in Fig 3, which imparts greater rigidity and enhances the tactile stimulation they provide.

Between each pair of projections 9 there is a secondary raised portion 10, also formed during injection moulding. The projections and the secondary portions 10 together define i 5 a continuous approximately oval wall which acts as a fluid trap labelled 11 in Fig 1.

Thus if the device is used with, or more specifically used to apply, a fluid such as a lubricant, at least some of the fluid is likely to be retained in the desired area of application, ie, in the region of the projections 9 which provide the tactile stimulation.

The secondary substrate 8 is secured to the main substrate 5 for instance by clueing, no welding or over-moulding.

The free ends of the strap 1 can be fastened together, on removal of the peel-off protective layers, to form the generally finger-shaped sleeve 12 seen in Figs 4 and 5. The circumference of the sleeve can be varied by adjusting the position at which the wings 3,4 are fastened to one another. The dimensions of the strap are such that the sleeve it forms in its closed configuration can accommodate a typical human middle finger.

The orientation of the wings 3,4 is such that they wrap around that region of the finger between the distal and proximal finger joints. The central portion 2, carrying the raised elements 9, then overlays the under side of the wearer's finger tip. The finger end is covered, but the sleeve is open at the top (back) side of the finger towards the distal end.

so In Figs 4 and 5 the device of the invention is shown worn on the middle finger; it may however be suitable for use on any finger or combination of fingers.

After use, the device of Figs 1 to 5 needs to be tom off the finger, the adhesive fastening between the wings 3 and 4 being in this case nonreleasable. This discourages re-use of the device.

as In an alternative version of the above described device, the projections 9 may be filled with a substance, ideally in fluid form, which is to be applied during use. In this case, to allow release of the fluid at the appropriate time, the outer walls of the projections may be made from a material (for instance, a thin polyurethane) which is rupturable under pressure, or the projections may be open-ended and covered with a subsequently do rupturable seal to contain the fluid within them.

Instead or in addition, the device may be provided with one or more fluidcontaining cells separate from the projections 9.

HI the device of Figs I to 5, the height of the projections 9 above the strap surface (measured from the centre of the projection area) might typically be 4.81 mm, that of the s intermediate raised portions 10 approximately 1.4 mm. The diameter of the projections (measured at their base, ie, at the strap surface) might typically be 4.2 mm. The oval defined by the eight projections might have an approximate length of 28 mm and width of 15 mm, these being the outside dimensions, ie, between the outer edges of the defining projections.

lo The maximum length of the fastened sleeve 12 is conveniently approximately 70 mm, measured at the "back face"'seen in Fig 5 from the distal end of the finger nail to the proximal ends of the wings 3 and 4. At the under side face (the right hand side in Fig 2) its length might typically be 25 to 50 mm, such as 45 to 50 mm. Its circumference is suitably about 49 mm at the position corresponding to the wearer's distal finger joint.

The sleeve dimensions may however vary depending on the group of users for which it is intended.

The alternative device shown in Fig 6 is similar to that of Figs 1 to 5, and like parts have been labelled with the same reference numerals. However, in this case the central portion 2a is wider than that of the Fig 1 device, so that when worn (as shown) the device accommodates two adjacent fingers, in this case the middle and index fingers. A different arrangement of raised elements 9 is possible on this larger device, but the raised elements are still provided in the region spanning the two adjacent "finger tips".

In this device the wing portions 3,4 are made of a material which adheres, like a sticking plaster, to the skin; they do not therefore need to fasten together in order to secure them in place.

The device shown in Figs 7 to 9 comprises, in accordance with the second aspect of the invention, a base substrate 20 made from an inherently adhesive, preferably flexible, material such as one of the medical gradetapes available from 3M. Glued to one face of the substrate 20 is a secondary substrate 21 made in this case from injection moulded thermoplastic elastomer, which carries integrally moulded solid projections 22. The device may alternatively comprise a single substrate having integral projections formed for instance by vacuum moulding, with an adhesive on its under side.

Again the construction and arrangement of the projections 22 may be similar to those in the device of Figs 1 to 5. However, more preferably the projections 22 are softer, flatter and more rounded in shape than projections 9 in the Fig 1 device, adapting the Fig 7 device for use inside the vagina for instance for G-spot stimulation.

The opposite (adhesive) face of the substrate 20 is protected with a peeroff paper or plastics sheets (again not shown). Its distal end 23 is "slipper"-shaped to accommodate a human finger end, as best seen in Fig 9.

This device is used as shown in Fig 9, by removing the peel-off sheets and applying the substrate 20 to the finger tip, to which it will stick by virtue of its inherent adhesiveness.

Ideally the skin is firstly made clean, dry and free from grease so as to promote good adhesion.

s A typical length for the device of Figs 7 to 9 might be from 30 to 40 mm, and its width from 20 to 25 mm.

Each of Figs 10 and 11 shows part of the distal end region of a device according to the invention. They illustrate how, in a device such as those of Figs I to 9, the projections may instead of being solid be at least partially hollow so as to reduce their rigidity.

lo Those of the Fig 10 device, labelled 30, have channels 31 cut into their free ends. These can help to trap a fluid, such as a lubricant, which the device is being used to apply.

In the projections 32 of the Fig 11 device, some channels 33 extend through from the free ends of the projections to the inside (in use) region of the device. Such channels can additionally function as vents to aid the release of air as the device is fitted to a finger.

Fig 12 shows a device in accordance with the first aspect of the invention, analogous to that of Fig I and with like parts labelled with the same reference numerals. This device incorporates two lines of perforations 40 along which the strap will tear relatively easily on application of an appropriate force. This aids removal of the device after use, and also discourages its subsequent re-use. The lines 40 are arranged to lie, in use, approximately along the length of each side of the finger.

Devices such as those of Figs 1 to 12 can be used to apply a tactile stimulus in the clitoral area of a female patient. In so doing the projections 9, 22 contact primarily the two sides of the clitoral shaft, thus providing what has been found to be highly effective and satisfying stimulation whilst protecting the more sensitive tip of the clitoris from as excessive contact. When, as intended, a lubricant is also applied using the device, it will tend to accumulate in the fluid trap region 11 and thus be retained in the clitoral area again to protect sensitive tissue during stimulation. /

Claims (40)

1. Claims I. A device of use in applying a tactile stimulus, the device

   comprising a flexible adhesive substrate having one or more raised elements on its surface, and the substrate being fastenable, by virtue of the adhesive, onto and/or around a human finger.
2. 2. A device according to claim 1, wherein the flexible adhesive substrate comprises a strap which is fastenable to form a flexible sleeve of variable circumference, the sleeve being adapted to accommodate, at least partially, a human finger.
3. 3. A device according to claim 2, wherein the fastened sleeve covers, in use, at least lo a substantial part of the under side of the wearer's finger end.
4. 4. A device according to claim 2 or claim 3, wherein the strap is fastenable in that region which in use corresponds to the upper side of the wearer's finger, in the region between the distal and proximal finger joints.
5. 5. A device according to any one of claims 2 to 4, wherein the circumference of the s fastened sleeve is variable at least from 50 to 65 mm.
6. 6. A device according to any one of claims 2 to 5, wherein the strap comprises a central portion flanked by wing portions which are fastenable together, andlor are fastenable to the central portion, so as to form the sleeve.
7. 7. A device according to claim 6, wherein the wing portions are integral with the central strap portion.
8. 8. A device according to claim 1, wherein the flexible adhesive substrate is of a size and shape suitable to cover, in use, only the under side of the wearer's finger end.
9. 9. A device according to claim 8, which has a tbreeimensional slipperlace configuration so as more closely to fit around the wearer's finger end in use.
10. 10. A device according to claim 8, which is non-rigid and essentially two- dimensional and can take its structure from a surface to which it is applied.
11. 11. A device according to claim 1, wherein the flexible adhesive substrate comprises a central portion flanked by wing portions which are fastenable around at least part of a wearer's finger.

    so
12. 12. A device according to claim 6 or claim 11 or any claim dependent thereon, wherein the central portion carries the one or more raised elements and in use, corresponds in position to the under side of the wearer's finger end
13. 13. A device according to any one of the preceding claims, wherein the flexible adhesive substrate is adhesive towards skin.
14. 14. A device according to any one of the preceding claims, wherein the substrate adhesive can remain effective in the presence of vaginal fluid, and within pH s ranges of from 4.5 to 7.5, for at least 30 minutes.
15. 15. A device according to any one of the preceding claims, wherein the substrate adhesive is non-releasable after use.
16. 16. A device of use in applying a tactile stimulus, the device comprising a flexible strap having one or more raised elements on its surface, the strap having fastening lo means by which it can be fastened to form a flexible sleeve of variable circumference, and the sleeve being adapted to accommodate, at least partially, a human finger.
17. 17. A device according to claim 16, wherein the fastening means is nonreleasable.
18. 18. A device according to claim 16 or claim 17, wherein the fastening means comprises an adhesive applied to at least one portion of the strap.
19. 19. A device according to any one of claims 16 to 18, wherein the circumference of the fastened sleeve is continuously variable between its maximum and minimum values.
20. 20. A device according to any one of the preceding claims, wherein the raised element(s) protrude by at least 2 mm above the substrate or strap surface.
21. 21. A device according to any one of the preceding claims, wherein the substrate or strap has a plurality of raised elements on its surface.
22. 22. A device according to any one of the preceding claims, wherein the raised element(s) are arranged in a loop, in the approximate shape of an ellipse, circle, oval, "lozenge" or rounded-end rectangle.
23. 23. A device according to any one of the preceding claims, wherein all or most of the raised element(s) are located in that region of the substrate or strap which corresponds, in use, to the under side of the wearer's Hager end.
24. 24. A device according to any one of the preceding claims, wherein, in use, there are no raised elements in any region of the under side of the substrate or strap which extends beyond the wearer's proximal finger joint in the direction of the palm of the hand.
25. 25. A device according to any one of the preceding claims, wherein the raised element(s) define a blank region of the substrate or strap surface which carries no as raised elements. me.
26. 26. A device according to claim 25, wherein the arrangement of raised elements comprises two groups each of at least one raised element, the two groups being positioned to either side of the blank region and being spaced apart circumferentially around the substrate or strap surface, in use, by the blank region.
27. 27. A device according to claim 25 or claim 26, wherein the blank region is located so that, in use, it corresponds to the central region of the under side of the wearer's finger end.
28. 28. A device according to any one of the preceding claims, wherein the raised element(s) at least partly define a fluid retaining region on the surface of the lo substrate or strap. 1/
29. 29. A device according to claim 28, wherein the fluid retaining region traces the form of an open-topped enclosure bound by the raised element(s) and the substrate or strap surface.
30. 30. A device according to claim 28 or claim 29, wherein the surface of the substrate or strap in the fluid retaining region is substantially flat.
31. 31. A device according to any one of claims 28 to 30, wherein there are both primary and secondary raised elements on the surface of the substrate or strap, the secondary raised elements being positioned between primary raised elements but protruding less far above the substrate or strap surface, the arrangement being such that the primary and secondary elements together define a continuous fluid retaining wall on the substrate or strap surface.
32. 32. A device according to any one of the preceding claims, wherein the raised element(s) are formed as an integral part of the substrate or strap, or of a secondary substrate attached thereto.

    2s
33. 33. A device according to any one of the preceding claims, which is capable of accommodating more than one finger.
34. 34. A device according to any one of the preceding claims, which is designed for a single use and to be disposable after use.
35. 35. A device of use in applying a tactile stimulus, the device being substantially as herein described with reference to the accompanying illustrative drawings.
36. 36. A package comprising a plurality of devices according to any one of the preceding claims, wherein the devices are adhered to a peer-off backing substrate, for removal and use individually.
37. 37. Use of a device according to any one of claims 1 to 35, to apply tactile pressure to a surface.
38. 38. Use of a device according to any one of claims I to 35, to apply a fluid substance to a surface.
39. 39. Use according to claim 37 or claim 38, wherein the surface comprises living tissue.

    s
40. 40. Use according to any one of claims 37 to 39, which is substantially as herein described with reference to the accompanying illustrative drawings. l