Device and method for emitting light within and outside a body cavity

Abstract

A device and method are disclosed for emitting light within a body cavity and / or on tissue outside the body cavity. The device (1) comprises a housing (2) with an intracorporeal arm (3) and an extracorporeal arm (4), the arms extending along intersecting axes. The housing (2) is formed at least in part of a translucent material that permits propagation of light. A plurality of light sources (5) are disposed in the housing and are powered by an internal energy source (6). A sensor arrangement (7) detects insertion of the intracorporeal arm to a predefined extent within the body cavity and provides a detection signal to a microprocessor (8). The microprocessor activates one or more light sources (5) in response to the detection signal and maintains emission while the arm remains inserted. The light sources (5) may emit at different wavelengths, for example in the 380-500 nm or 315-400 nm ranges, to enable different therapeutic effects such as treatment of bacterial or fungal infections. Light guides (50) may be provided in the arms to direct light through the translucent housing (2), optionally with scattering or lensing surfaces. The invention further relates to a method of emitting light using such a device.

Description

[0001] DEVICE AND METHOD FOR EMITTING LIGHT WITHIN AND OUTS IDE A BODY CAVITY

[0002] TECHNICAL FIELD

[0003] The disclosure relates to a device for emitting light within, and on tissues arranged outside , a body cavity, the device comprising a housing, an energy source , and a plurality of light sources .

[0004] BACKGROUND

[0005] Vaginitis is a condition commonly characteri zed by pain, itching, discomfort , or unusual discharge , and it is most commonly caused by fungal and bacterial infections . Many women experience this condition recurrently throughout their lives . The condition can arise for several di f ferent reasons but is usually a result of a change in the composition of the vaginal microbiome . This can occur due to , for example , hormonal changes , the introduction of foreign pathogens , sensitivity to external compounds often found in personal care products such as soaps , detergents , or tampons , or the introduction of semen .

[0006] A typical , known type of treatment comprises the application of antibiotics for bacterial vaginosis , or anti fungal medication for fungal infections , most often vulvovaginal Candidiasis . Antibiotics are systemic and may cause side ef fects such as nausea, vomiting, diarrhea, and headaches . Furthermore , antibiotics dominantly target bacteria, including both commensal and pathogenic species , leaving the vaginal microbiome susceptible to coloni zation by fungal species , in turn leading to fungal infections . It has also been documented that Gardnerella vaginalis , the bacteria most commonly associated with bacterial vaginosis , has shown a propensity for quickly developing antibiotic

[0007] 03691-PCT resistance when treated repeatedly with antibiotics . A similar tendency is observed in fungal species becoming resistant to anti fungal treatments .

[0008] An alternative treatment comprises intracorporeal light therapy, e . g . by means of a UV-emitting device inserted into the vagina . One disadvantage of using such a device is that UV light is damaging to the eye ' s surface tissues as well as the cornea and lens . A further challenge is associated with consistently applying a very precisely speci fied UV light dosage . Additionally, the device must be safe and easy to insert and use , to ensure this type of therapy constitutes an improvement over other types of care , and that treatment is delivered fully and correctly .

[0009] Hence , a safer and more ef ficient device for emitting light within a body cavity, and on tissue outside the body cavity, such as the vagina and vulva, would be advantageous .

[0010] SUMMARY

[0011] It is an obj ect of the invention to provide an improved device for emitting light within a body cavity as well as on tissues surrounding the body cavity, which device is easy to operate and safe for the user .

[0012] According to a first aspect , there is provided a device for emitting light within a body cavity and / or on tissue outside the body cavity, the device comprising :

[0013] • a housing comprising : o an intracorporeal arm extending along a first arm axis ; and o an extracorporeal arm extending along a second arm axis (A2 ) , the first arm axis intersecting the second arm axis ,

[0014] 03691-PCT o the housing being formed, at least in part , of a translucent material configured to allow propagation of light through the housing;

[0015] • a plurality of light sources arranged within the housing so as to emit light through the translucent material ;

[0016] • an energy source disposed within the housing and operatively coupled to the light sources to supply electrical power thereto ;

[0017] • a sensor arrangement disposed within or on the housing and configured to generate a detection signal indicative of whether the intracorporeal arm is inserted at least to a predefined extent within the body cavity; and

[0018] • a microprocessor disposed within the housing and operatively coupled to the sensor arrangement and the light sources , the microprocessor being programmed to : o activate at least one of the light sources upon receiving the detection signal ; and maintain continuous emission of light from the at least one light source while the detection signal indicates that the intracorporeal arm is inserted at least to the predefined extent within the body cavity .

[0019] This device provides an option for simple , safe , and ef ficient at-home treatment of fungal and bacterial infections , and the device does not require special training or protective equipment . The light sources facilitate a decrease in unwanted pathogens and / or microorganisms within and outside of the body cavity, while eliminating the risk of eye-damaging light wavelengths being emitted outside of the body cavity .

[0020] 03691-PCT In a possible implementation form of the first aspect , the intracorporeal arm is located, to a predefined extent , within the body cavity when all light sources of the intracorporeal arm are located within the body cavity . This prevents light of eye-damaging wavelengths from being emitted outside of the body cavity .

[0021] In a further possible implementation form of the first aspect , the sensor arrangement is configured to detect i f the intracorporeal arm is located, to a predefined extent , within the body cavity by detecting that the intracorporeal arm has been inserted into an ori fice enveloping the intracorporeal arm after insertion . This ensures all light sources , capable of emitting light of eye-damaging wavelengths , have to be located within the body cavity in order to emit light .

[0022] In a further possible implementation form of the first aspect , the device is used for vaginal light therapy, facilitating simple and ef ficient home treatment of for example vaginitis .

[0023] In a further possible implementation form of the first aspect , the energy source is a battery, and the battery is arranged within the extracorporeal arm . This allows the device to be used without a power cable and facilitates a reduced intracorporeal arm form factor . Furthermore , device safety is improved by ensuring the battery remains outside of the body during use .

[0024] In a further possible implementation form of the first aspect , the housing is substantially L- , V- or T-shaped, the L- , V- or T- shape being formed by the intracorporeal arm and the extracorporeal arm . This facilitates simple

[0025] 03691-PCT maneuvering upon insertion and extraction, as well as allows treatment both internally within the body cavity and of tissue outside of the body cavity .

[0026] The shape of the device enables light exposure to both internal surfaces within the body cavity and external tissue surfaces in the region surrounding the cavity . For example , an L-shaped or V-shaped configuration positions the intracorporeal arm to emit light within the cavity while simultaneously positioning the extracorporeal arm to emit light onto adj acent external tissues . This simultaneous internal and external treatment capability can reduce total treatment time and improve treatment consistency across af fected areas .

[0027] In a further possible implementation form of the first aspect , the first arm axis extends at an angle to the second arm axis , the angle being 45 °<a<90 ° , preferably 75 ° <a<90 ° . This facilitates simple maneuvering upon insertion and extraction, as well as allows treatment both internally within the body cavity as well as of tissue outside of the body cavity .

[0028] In a further possible implementation form of the first aspect , the intracorporeal arm and at least a part of the extracorporeal arm is a single-piece unit , ensuring a completely fluid-proof barrier between the body cavity and the interior of the device .

[0029] In a further possible implementation form of the first aspect , each light source is deactivated by means of the user interface , by means of a timer connected to the microprocessor, and / or by means of the sensor arrangement detecting extraction of the intracorporeal arm from the

[0030] 03691-PCT body cavity . This allows flexibility regarding how to deactivate the light sources and, hence , adaptability to speci fic use cases .

[0031] In a further possible implementation form of the first aspect , the user interface is an analogue interface arranged on the extracorporeal arm and / or a digital interface downloaded on a digital apparatus connected to the device . This allows device operation to be initiated either directly on the device or remotely .

[0032] In a further possible implementation form of the first aspect , the analogue interface is a button, and the digital interface is an application . This allows device operation to be initiated either on the device or via, e . g . , a smartphone .

[0033] In a further possible implementation form of the first aspect , the device further comprises wireless technology allowing transmi ssion of data from the microprocessor to the user interface and, optionally, from the user interface to the microprocessor . This facilitates one-way or two-way communication between the device and the user .

[0034] In a further possible implementation form of the first aspect , the sensor arrangement comprises a plurality of sensors arranged in the intracorporeal arm, ensuring enclosure of the intracorporeal arm by the body cavity can be detected both lengthwise and circumferentially .

[0035] In a further possible implementation form of the first aspect , the sensor arrangement is configured to sequentially detect the insertion of the intracorporeal arm into the body cavity and / or extraction of the

[0036] 03691-PCT intracorporeal arm from the body cavity, the sequential detection being achieved by means of at least one array of sensors arranged in the intracorporeal arm, the array extending substantially parallel with the first arm axis . This allows detecting whether the intracorporeal arm has been suf ficiently inserted into the body cavity such that no harmful light can be emitted outside of the body cavity . This , in turn, ensures no light sources are activated erroneously due to , e . g . , holding by enclosing the intracorporeal arm with the palm of the hand .

[0037] In a further possible implementation form of the first aspect , the sensor arrangement comprises at least one of a capacitive sensor, a light sensor, and / or a temperature sensor, allowing full flexibility and increased optional functionality and usability .

[0038] In a further possible implementation form of the first aspect , the plurality of light sources are arranged in the intracorporeal arm and / or in the extracorporeal arm, facilitating light emission internally within the body cavity, externally outside the body cavity, or both .

[0039] In a further possible implementation form of the first aspect , the plurality of light sources comprises lightemitting diodes ( LEDs ) configured to emit light in a 380- 500 nm spectrum and, optionally, light-emitting diodes ( LEDs ) configured to emit light in a 315-400 nm spectrum . This allows use of visible spectrum LEDs and, optionally, UV-A LEDs .

[0040] In certain embodiments , the device is configured to emit light at two distinct wavelengths selected to target di f ferent classes of microorganisms . For example , the

[0041] 03691-PCT device may emit UVA light in the range 350 - 400nm, which has been shown to be ef fective in reducing bacterial load, in combination with blue light in the range of 400-450nm, which is ef fective in reducing yeast or fungal load . By combining these two wavelengths in a single treatment session, the device can address mixed or uncertain infections without requiring separate devices or sequential treatments . The dual-wavelength arrangement may be implemented by alternating light sources of di f ferent wavelengths along one or more arrays , or by allocating speci fic regions of the intracorporeal arm and / or extracorporeal arm to each wavelength .

[0042] In a further possible implementation form of the first aspect , the light sources configured to emit light in the 380-500 nm spectrum are arranged in the intracorporeal arm and in the extracorporeal arm, while the light sources configured to emit light in the 315-400 nm spectrum are arranged in the intracorporeal arm only . This ensures noneye-damaging light can be radiated both inside and outside the body cavity, while eye-damaging light can be radiated only within the body cavity .

[0043] In a further possible implementation form of the first aspect , the device comprises at least one axially extending light guide in the intracorporeal arm and / or in the extracorporeal arm, the at least one light guide being configured to guide light from one or more of the plurality of light sources towards the housing, and the at least one light guide is preferably tubular or rod-shaped .

[0044] In a further possible implementation form of the first aspect , light guide has a roughened outer surface

[0045] 03691-PCT configured to scatter light so that light is emitted substantially along its entire length .

[0046] In a further possible implementation form of the first aspect , light guide has a lensed geometry, preferably formed by a plastic (polymer ) material with optic grains to disperse light and a metallic coating to spread light at predetermined positions or areas of the light guide .

[0047] In a further possible implementation form of the first aspect , each light source or the light guide arranged in the intracorporeal arm is arranged at a fixed distance from an interior surface of the housing . This ensures correct and identical dosage is applied evenly throughout the body cavity, i . e . at identical distances from the tissue .

[0048] By maintaining a controlled and uni form spacing between each light source or light guide and the outer surface of the housing, the device can produce a more even irradiance profile across the treated surface . This spacing minimi zes hotspots and shadowing, thereby promoting uni form light dosage delivery along the length and circumference of the treated region . Such even distribution of light improves the consistency of treatment outcomes and user comfort .

[0049] In a further possible implementation form of the first aspect , the light sources arranged in the intracorporeal arm are arranged in at least two arrays , the arrays of light sources extending in parallel with the first arm axis . This ensures light is radiated evenly across the length and the perimeter of the body cavity .

[0050] In a further possible implementation form of the first aspect , the light sources arranged in the extracorporeal arm are arranged partially along the second arm axis and

[0051] 03691-PCT partially on opposite sides of the second arm axis , facilitating even distribution of light as required .

[0052] In a further possible implementation form of the first aspect , the intracorporeal arm and, optionally, the extracorporeal arm has an irregular cross-section, the cross-section extending in a plane perpendicular to the first arm axis and the second arm axis , respectively . The irregular shape facilitates a shape that is not only comfortable during use , but which also is adapted to the shape of the human body .

[0053] In a further possible implementation form of the first aspect , the cross-section of the intracorporeal arm has a di f ferent shape than the cross-section of the extracorporeal arm, allowing the arms to be adapted to the shapes of di f ferent parts of the human body .

[0054] In a further possible implementation form of the first aspect , the cross-section is not circular and not elliptical , facilitating a shape that is not only comfortable during use , but which is also adapted to the shape of the human body .

[0055] In a further possible implementation form of the first aspect , one side of the intracorporeal arm tapers along the direction of the first arm axis , such that the distance between the first arm axis and the interior surface of the housing is reduced gradually along a first side of the intracorporeal arm while the distance between the first arm axis and the interior surface of the housing remains substantially constant along a second side of the intracorporeal arm . This allows the device to be adapted most ef ficiently to the shape of the human body .

[0056] 03691-PCT In a further possible implementation form of the first aspect , the device comprises a proximal end and a distal end, the proximal end comprising a free end of the extracorporeal arm and the distal end comprising a free end of the intracorporeal arm, the free end of the intracorporeal arm being configured for insertion into the body cavity .

[0057] In a further possible implementation form of the first aspect , the extracorporeal arm has larger external dimensions than the intracorporeal arm, allowing the insertable intracorporeal arm to be narrower while the extracorporeal arm, which is not intended for insertion, can be made wider and, e . g . , accommodate electronics and power supply .

[0058] In a further possible implementation form of the first aspect , an area of the housing, where the intracorporeal arm intersects the extracorporeal arm, comprises a recess configured to accommodate the pubic bone of the user, the recess comprising a reduction in cross-section of the intracorporeal arm and of the extracorporeal arm .

[0059] In a further possible implementation form of the first aspect , the intracorporeal arm comprises a translucent material configured to allow light in the 380-500 nm spectrum and, optionally, light in the 315-400 nm spectrum, to radiate through the material .

[0060] In a further possible implementation form of the first aspect , the extracorporeal arm comprises a first section of translucent material configured to allow light in the 380-500 nm spectrum to radiate through the first section,

[0061] 03691-PCT and a second section of opaque material preventing light in the 380-500 nm spectrum from radiating through the second section .

[0062] According to a second aspect there is provided a method of emitting light within a body cavity and / or on tissue outside the body cavity, the method comprising :

[0063] • providing a device comprising : o a housing comprising an intracorporeal arm extending along a first arm axis and an extracorporeal arm extending along a second arm axis , the first arm axis intersecting the second arm axis , the housing comprising a translucent material configured to allow propagation of light through the housing; o a plurality of light sources arranged within the housing; o an energy source arranged within the housing; o a sensor arrangement configured to detect whether the intracorporeal arm is inserted at least to a predefined extent within the body cavity; and o a microprocessor configured to activate at least one of the light sources and to maintain continuous emission of light from the at least one light source while the sensor arrangement detects that the intracorporeal arm is inserted at least to the predefined extent within the body cavity;

[0064] • inserting the intracorporeal arm of the device 1 into the body cavity to the predefined extent ;

[0065] • detecting, via the sensor arrangement , insertion of the intracorporeal arm at least to the predefined extent ;

[0066] • activating at least one of the light sources ; and

[0067] 03691-PCT • emitting light continuously from the at least one light source while the sensor arrangement detects that the intracorporeal arm is inserted at least to the predefined extent within the body cavity .

[0068] In a possible implementation form of the second aspect activating at least one of the light sources is in response to the detecting step .

[0069] In a possible implementation form of the second aspect the microprocessor is further configured to autonomously activate the light sources upon the sensor arrangement detecting that the intracorporeal arm is inserted at least to the predefined extent within the body cavity, to deactivate the light sources when the sensor arrangement detects that the intracorporeal arm is not inserted to the predefined extent , and to activate the light sources according to a predetermined pattern or sequence and / or according to a predetermined pattern or sequence of intensity .

[0070] According to a third aspect there is provided a device for emitting light within a body cavity and / or on tissue outside the body cavity, the device comprising :

[0071] • a housing comprising :

[0072] - an intracorporeal arm extending along a first arm axis ; and

[0073] - an extracorporeal arm extending along a second arm axis , the first arm axis intersecting the second arm axis , the housing being formed, at least in part , of a translucent material configured to allow propagation of light through the housing;

[0074] • one or more light sources ;

[0075] 03691-PCT • an energy source disposed within the housing and operatively coupled to the one or more light sources to supply electrical power thereto ; and

[0076] • at least one axially extending light guide in the intracorporeal arm and / or in the extracorporeal arm, the at least one light guide being configured to guide light from the one or more light sources towards the housing .

[0077] In a possible implementation form of the third aspect , the at least one axially extending light guide is positioned within the housing so as to emit light through the translucent material , the at least one light guide preferably being tubular or rod-shaped .

[0078] In a possible implementation form of the third aspect , the at least one light guide has a roughened outer surface configured to scatter light , or has a lensed geometry .

[0079] In a possible implementation form of the third aspect , a first light source and a second light source are associated with the at least one axially extending light guide ( 50 ) , preferably with the first light source being configured to emit light at a first wavelength and the second light source being configured to emit light at a second wavelength di f ferent from the first wavelength .

[0080] According to a fourth aspect , there is provided a device for emitting light within a body cavity and on tissue outside the body cavity, the device comprising : • a housing comprising :

[0081] - an intracorporeal arm extending along a first arm axis ; and

[0082] - an extracorporeal arm extending along a second arm axis , the first arm axis intersecting the second arm axis ;

[0083] 03691-PCT the housing being formed, at least in part , of a translucent material configured to allow propagation of light through the housing;

[0084] • a plurality of light sources arranged within the housing so as to emit light through the translucent material of both the intracorporeal arm and the extracorporeal arm; and

[0085] • an energy source disposed within the housing and operatively coupled to the light sources to supply electrical power thereto .

[0086] In a possible implementation form of the fourth aspect , the plurality of light sources ( 5 ) comprise a first light source configured to emit light at a first wavelength and a second light source configured to emit light at a second wavelength di f ferent from the first wavelength .

[0087] In a possible implementation form of the fourth aspect , the first wavelength is suitable for treating bacterial infections and the second wavelength is suitable for treating fungal infections .

[0088] In a possible implementation form of the fourth aspect , the intracorporeal arm ( 3 ) has at least a first and a second light source associated therewith, and the extracorporeal arm ( 4 ) has at least one light source associated therewith .

[0089] According to a fi fth aspect there is provided a method of emitting light within a body cavity and / or on tissue outside the body cavity, the method comprising :

[0090] • providing a device according to the third aspect or the fourth aspect ;

[0091] • supplying electrical power from an energy source disposed in a housing of the device to one or more light sources ; and

[0092] 03691-PCT • emitting light from the one or more light sources through a translucent portion of the housing and / or via at least one axially extending light guide in an intracorporeal arm and / or an extracorporeal arm .

[0093] In a possible implementation form of the fi fth aspect , the light is emitted through the at least one axially extending light guide having a roughened outer surface configured to scatter light or a lensed geometry .

[0094] In a possible implementation form of the fi fth aspect , light is emitted at a first wavelength and at a second wavelength di f ferent from the first wavelength .

[0095] In a possible implementation form of the fi fth aspect , the first wavelength is suitable for treating bacterial infections and the second wavelength is suitable for treating fungal infections .

[0096] The foregoing and other obj ects are achieved by the features of the independent claim . Further implementation forms are apparent from the dependent claims , the description, and the figures . These and other aspects of the invention will be apparent from the embodiments described below .

[0097] BRIEF DESCRIPTION OF THE DRAWINGS

[0098] In the following detailed portion of the present disclosure , the invention will be explained in more detail with reference to the example embodiments shown in the drawings , in which :

[0099] Fig . 1 is a schematic perspective view of an embodiment of the device ;

[0100] Fig . 2 is a schematic side view of the device of Fig . 1 ;

[0101] 03691-PCT Fig. 3 is a schematic cross-sectional view of the device of Fig. 1;

[0102] Fig. 4 is a schematic top view of the device of Fig. 1;

[0103] Fig. 5 is a schematic perspective view of another embodiment of the device; and

[0104] Fig. 6 is a schematic cross-sectional view of the device of Fig. 5.

[0105] DETAILED DESCRIPTION

[0106] The present disclosure relates to a device 1 for emitting light within a body cavity and / or on tissue located outside the body cavity. The body cavity may be a vagina, and the device 1 may be used for vaginal light therapy as well as light therapy of the vulva. Nevertheless, the device may be used for other types of light therapy such as anal light therapy or oral light therapy.

[0107] The device comprises a housing 2 which, in turn, comprises an intracorporeal arm 3 extending along a first arm axis Al and an extracorporeal arm 4 extending along a first arm axis A2. The first arm axis Al intersects the second arm axis A2, as illustrated in Figs. 1 to 3. The first arm axis Al and the second arm axis A2 can be considered the longitudinal axis of the respective arm. As shown in Figs. 1 and 2, the first arm axis Al may extend at an angle a to the second arm axis A2, the angle a being 45°<a<90°, preferably 75°<a<90°.

[0108] In the present description, the term "arm axis" of the intracorporeal arm 3 and the extracorporeal arm 4 refers to the respective longitudinal centerline of each arm. For consistency, "first arm axis (Al)" may be used interchangeably with "first center axis (Al)", and "second arm axis (A2)" with "second center axis (A2) . The first and

[0109] 03691-PCT second arm axes intersect and define the relative orientation of the arms , which may be L- , V- or T-shaped as illustrated, with 45 °<a<90 ° , preferably 75 °<a<90 ° ( see Figs . 1-3 ) . This axis convention is used throughout when describing the geometry, placement of components , and light emission paths through the housing 2 ( Figs . 1-4 )

[0110] The intracorporeal arm 3 is configured to be inserted into a body cavity while the extracorporeal arm 4 is configured to extend outside of the body cavity when the intracorporeal arm 3 is inserted into the body cavity . The intracorporeal arm 3 and the extracorporeal arm 4 can both be considered to be legs or elongated tubular members with varying cross-sections .

[0111] The housing 2 may be substantially L-shaped as shown in Fig . 4 when the angle a is one of the larger values included in the above-mentioned range , substantially V-shaped when the angle a is one of the smaller values included in the above-mentioned range (not shown) , or substantially T- shaped when the intracorporeal arm 3 is connected to a middle portion of the extracorporeal arm 4 (not shown) . The L- , V- or T-shape is , in other words , formed by the intracorporeal arm 3 and the extracorporeal arm 4 . The device 1 may comprise a proximal end and a distal end, the proximal end comprising a free end 4a of the extracorporeal arm 4 and the di stal end comprising a free end 3a of the intracorporeal arm 3 , the free end 3a of the intracorporeal arm being configured for insertion into the body cavity .

[0112] The housing 2 comprises a translucent material configured to allow propagation of light through the housing 2 . The translucent material may be UV-resistant . The translucent

[0113] 03691-PCT material may be frosted or etched to improve light distribution .

[0114] The intracorporeal arm 3 may comprise a translucent material configured to allow light in the 380-500 nm spectrum and, optionally, light in the 315-400 nm spectrum, to radiate through the material . As illustrated in Fig . 3 , the extracorporeal arm 4 may comprise a first section 4b of translucent material configured to allow light in the 380-500 nm spectrum to radiate through the first section, and a second section 4c of opaque material preventing light in the 380-500 nm spectrum from radiating through the second section . The first section 4b of translucent material may be configured to abut an exterior surface of the human body such as the vulva . The second section 4c of opaque material may be configured to be directed away from an exterior surface of the human body such as the vulva, i . e . the second section 4c of opaque material may form an impenetrable barrier preventing light from propagating in directions away from the body . The opaque material may be completely opaque silicone hiding components arranged within the extracorporeal arm 4 and providing an improved grip to help insertion .

[0115] The intracorporeal arm 3 and at least a part of the extracorporeal arm 4 may be a single-piece unit , such as an inj ection molded piece . For example , the second section 4c of the extracorporeal arm 4 may be a separate component while the remainder of the extracorporeal arm 4 and the intracorporeal arm 3 , i . e . the remainder of the housing 2 , is a single-piece unit . In such an embodiment , the second section 4c may be detachably connected to the first section 4b, e . g . by means of snap- fit .

[0116] 03691-PCT An energy source 6 is arranged within the housing 2 . The energy source 6 may be a battery and the battery may be arranged within the extracorporeal arm 4 . The battery 6 may be a rechargeable battery and the device 1 may be configured to be charged by means of , for example , an inductive charger capable of cradling the device 1 .

[0117] A plurality of light sources 5 are arranged within the housing 2 . The plurality of light sources 5 may be arranged in the intracorporeal arm 3 and / or in the extracorporeal arm 4 and are used to treat tissue with light of speci fic wavelengths . I f only the light sources 5 , 5a, 5b arranged in the intracorporeal arm 3 are activated, only tissue within the body cavity is treated . I f only the light sources 5 , 5a arranged in the extracorporeal arm 4 are activated, only tissue outside , but in direct connection with, the body cavity is treated . Activation may be adapted such that only light sources 5 , 5a, 5b arranged in the intracorporeal arm 3 are activated, only light sources 5 , 5a arranged in the extracorporeal arm 4 are activated, or all light sources 5 , 5a, 5b arranged in the intracorporeal arm 3 as well as the extracorporeal arm 4 are activated .

[0118] The plurality of light sources 5 may comprise light emitting diodes configured to emit light in a 380-500 nm spectrum and, optionally, in a 315-400 nm spectrum . Light sources 5 , 5a configured to emit light in the 380-500 nm spectrum may be arranged in the intracorporeal arm 3 and in the extracorporeal arm 4 , while light sources 5b configured to emit light in the 315-400 nm spectrum may be arranged in the intracorporeal arm 3 only .

[0119] As illustrated in Fig . 3 , light sources 5 arranged in the intracorporeal arm 3 may be arranged at a fixed distance D

[0120] 03691-PCT from an interior surface of the housing 2 . The light sources 5 may, for example , be arranged such that the distance D is 5 mm . With a housing thickness of 3 mm, this would make the distance between light source and tissue 8 mm .

[0121] Light sources 5 arranged in the intracorporeal arm 3 may be arranged in at least two arrays extending in parallel with the first arm axis Al . As illustrated in Fig . 4 , the light sources 5 may be arranged in three arrays , the arrays being substantially equidistantly arranged along the circumference of the intracorporeal arm 3 . The light sources 5a, 5b within each array may be arranged alternatingly such that adj acent light sources 5 have di f ferent wavelengths .

[0122] As also illustrated in Fig . 4 , the light sources 5 arranged in the extracorporeal arm 4 may be arranged partially along the second arm axis A2 , for example where the extracorporeal arm 4 is narrower, and partially on opposite sides of the second arm axis A2 , for example where the extracorporeal arm 4 is wider . For example , the extracorporeal arm 4 may be 1 . 5-2 times wider than the intracorporeal arm 3 at its widest .

[0123] A sensor arrangement 7 is configured to detect i f the intracorporeal arm 3 is inserted, to a predefined extent E as illustrated in Fig . 1 , within the body cavity . The intracorporeal arm 3 may be cons idered to be " located to the predefined extent E within the body cavity" when all light sources 5 of the intracorporeal arm 3 are located within the body cavity . In other words , the sensor arrangement 7 may be configured to detect i f the intracorporeal arm 3 is located, to the predefined extent E , within the body cavity by detecting that the

[0124] 03691-PCT intracorporeal arm 3 has been inserted into an ori fice enveloping the intracorporeal arm 3 .

[0125] A microprocessor 8 is configured to allow activation of at least one of the light sources 5 and to allow continuous emission of light from the light sources 5 as long as the sensor arrangement detects that the intracorporeal arm is inserted, to the predefined extent E , within the body cavity .

[0126] The sensor arrangement 7 can be disposed within or on the housing 2 can detect insertion of the intracorporeal arm 3 to at least a predefined extent (X / E ) by sequential activation of multiple sensors 12 arranged along Al ( Fig . 2 ) . The microprocessor 8 receives a detection signal and activates one or more light sources 5 and / or drives the light guide 50 only while the detection signal persists , thereby maintaining continuous emission during proper placement and deactivating emission immediately upon withdrawal or loss of signal . The control may implement predetermined temporal patterns (pulsed, sequenced, or intensity-modulated output ) to tailor light dose and manage thermal load ( Figs . 1-4 ) .

[0127] A user interface 9 is connected to the microprocessor 8 for activating the light sources 5 . The user interface 9 may be an analogue interface arranged on the extracorporeal arm 4 and / or a digital interface downloaded on a digital apparatus 10 connected to the device 1 . The digital apparatus 10 is in wireless or wired communication with the microprocessor 8 . The analogue interface may be a button and the digital interface may be an application, as illustrated in Fig . 1 . The user interface 9 may allow

[0128] 03691-PCT activation of the light sources 5 and / or pausing or deactivation of the light sources 5.

[0129] The user interface 9 (physical control on arm 4 and / or an application on a digital apparatus 10) may provide manual activation / deactivation and parameter selection, while wireless circuitry 11 enables data exchange (e.g., sensor status, runtime, dose tracking) and, optionally, remote control of operating modes. A timer function may automatically terminate emission after a prescribed treatment interval (e.g., 30 minutes) as an additional safety measure (Figs. 1-3) .

[0130] Alternatively, the microprocessor (8) can be configured to autonomously activate and deactivate the light sources (5a, 5b, 5c) when the sensor arrangement detects that the intracorporeal arm is inserted, to the predefined extent (E) , within the body cavity. Thus, the microprocessor (8) can be configured to activate the light sources (5a, 5b, 5c) according to a predetermined pattern or sequence and / or according to a predetermined pattern or sequence of intensity, the initiation of such light emission being triggered by the sensor arrangement detecting that the intracorporeal arm is inserted, to the predefined extent (E) , within the body cavity. Moreover, the microprocessor (8) can be configured to deactivate the light sources (5a, 5b, 5c) when the sensor arrangement detects that the intracorporeal arm is not inserted to the predefined extent (E) within the body cavity.

[0131] Each light source 5 may be deactivated by means of the user interface 9, by means of a timer connected to the microprocessor 8, e.g. deactivating the light sources 5 automatically after 30 minutes, and / or by means of the

[0132] 03691-PCT sensor arrangement 7 detecting extraction of the intracorporeal arm 3 from the body cavity .

[0133] The device 1 may further comprise wireless technology 11 allowing transmission of data from the microprocessor 8 to the user interface 9 and, optionally, from the user interface 9 to the microprocessor 8 . Transmission of data from the microprocessor 8 to the user interface 9 , for example , allows a user to monitor progress during use . Transmission of data from the user interface 9 to the microprocessor 8 may be utili zed to control the operation of the device . The wireless technology 11 may be configured to operate under the industrial , scienti fic, and medical ( ISM) frequency range ( 2400-2500MHz ) , via protocols such as Bluetooth, Wi-Fi , Zigbee , etc .

[0134] The sensor arrangement 7 may comprise a plurality of sensors 12 arranged in the intracorporeal arm 3 , as illustrated in Fig . 2 . The sensor arrangement 7 may be configured to sequentially detect the insertion of the intracorporeal arm 3 into the body cavity and / or extraction of the intracorporeal arm 3 from the body cavity . The sequential detection may be achieved by means of at least one array of sensors 12 arranged in the intracorporeal arm 3 , the array extending substantially parallel with the first arm axis Al . Each sensor 12 detects , in sequence , whether the section comprising the speci fic sensor is inserted into a body cavity . When all sensors 12 in an array have detected insertion into the body cavity, it is determined, by means of the microprocessor 8 , that the intracorporeal arm 3 has been suf ficiently inserted into the body cavity and the light sources 5 may be activated .

[0135] 03691-PCT The sequential detection ensures that erroneous determination of the intracorporeal arm 3 being suf ficiently inserted into the body cavity is avoided, for example when the intracorporeal arm 3 and associated sensors 12 are grasped by hand . The corresponding applies to deactivation of the light sources 5 upon extraction of the intracorporeal arm 3 from the body cavity, as the sensors 12 of at least one array detect , in sequence , that the intracorporeal arm 3 is no longer suf ficiently inserted into the body cavity . As a consequence , the light sources 5 are deactivated immediately .

[0136] The sensor arrangement may comprise at least one of a capacitive sensor, a light sensor, and / or a temperature sensor . The temperature sensor may be configured to register the body temperature of the user .

[0137] The intracorporeal arm 3 and, optionally, the extracorporeal arm 4 may have an irregular cross-section, as best illustrated in Fig . 4 . The cross-section extends in a plane P perpendicular to the first arm axis Al and the second arm axis A2 , respectively . Furthermore , the crosssection of the intracorporeal arm 3 may have a di f ferent shape than the cross-section of the extracorporeal arm 4 . The cross-section is not circular and not elliptical . The extracorporeal arm 4 may have larger external dimensions than the intracorporeal arm 3 .

[0138] One side of the intracorporeal arm 3 may taper along the direction of the first arm axis Al , such that the distance between the first arm axis Al and the interior surface of the housing 2 is reduced gradually along a first side of the intracorporeal arm 3 , while the distance between the first arm axis Al and the interior surface of the housing

[0139] 03691-PCT 2 remains substantially constant along a second side of the intracorporeal arm . Fig . 3 shows the first side of the intracorporeal arm 3 to the right and the second side of the intracorporeal arm 3 to the le ft of first arm axis Al .

[0140] An area of the housing 2 , where the intracorporeal arm 3 intersects or connects to the extracorporeal arm 4 , may comprise a recess 13 configured to accommodate a pubic bone of a user, the recess 13 comprising a reduction in crosssection of the intracorporeal arm 3 and of the crosssection of the extracorporeal arm 4 . In other words , the area of the device 1 where the intracorporeal arm 3 and the extracorporeal arm 4 interconnect may comprise a recess shaped to provide space for the pubic bone of the user .

[0141] The plurality of light sources may comprise light-emitting diodes ( LEDs ) configured to emit light in a 380-500 nm spectrum and, optionally, light-emitting diodes ( LEDs ) configured to emit light in a 315-400 nm spectrum . This allows use of visible spectrum LEDs and, optionally, UV-A LEDs . The LEDs can be arranged on a Printed circuit board PCB 40 .

[0142] In some implementations , the intracorporeal arm 3 has at least a first and a second light source ( e . g . , arranged in two or more axial arrays substantially parallel to Al ) , and the extracorporeal arm 4 has at least one light source , enabling light delivery to both internal and external tissues during a single placement ( Figs . 3-4 ) . Arrays may be equidistantly spaced around the intracorporeal arm circumference to improve uni formity, and may be mirrored or staggered on the extracorporeal arm to suit its width profile along A2 .

[0143] 03691-PCT Figs . 5 and 6 disclose another embodiment , that is largely identical to the first embodiment except for the presence of a light guide 50 that transmits and distributes light from one or more of the light sources 5 to the part of the housing 2 that is associated with the intracorporeal arm 3 . In this embodiment , structures , and features that are the same or similar to corresponding structures and features previously described or shown herein are denoted by the same reference numeral as previously used for simplicity . The light guide 50 extends , as shown, axially in the intracorporeal arm 3 , although it should be understood that the light guide 50 could also extend in the extracorporeal arm or that a light at 50 can be provided in both the intracorporeal and the extracorporeal arm 4 . The light guide 50 is configured to guide light from one or more of the plurality of light sources 5 , 5a towards the housing 2 or at least a part of the housing 2 as sociated with the arm 3 , 4 in which the light guide 50 is di sposed . The light guide 50 has in an embodiment a roughened outer surface configured to scatter light so that light is emitted substantially along its entire length, and with the light guide 50 extending along most of the length of the intracorporeal arm 3 , it will distribute the light from the light source 5 , 5 A, 5 B associated therewith along the length of the intracorporeal arm 3 . In another embodiment the light guide 50 has a lensed geometry, preferably formed by a plastic (polymer ) material with optic grains to disperse light and a metallic coating to spread light at predetermined positions or areas of the light guide . The lightguide 50 is preferably armed within the intracorporeal arm 3 so the surface of the light guide 50 is a predetermined distance from the portion of the housing associated intracorporeal arm 3 .

[0144] 03691-PCT In certain embodiments , the at least one light guide 50 may be disposed within the extracorporeal arm 4 instead of , or in addition to , the intracorporeal arm 3 . A light guide 50 in the extracorporeal arm 4 can be used to direct light toward tissue located externally of the body cavity, for example the vulva, perineum, or surrounding skin . In such embodiments , the light guide 50 may be dimensioned to extend substantially along the length of the extracorporeal arm 4 and may be tubular or rod-shaped .

[0145] In some embodiments , the light guide 50 is positioned within the intracorporeal arm 3 and / or the extracorporeal arm 4 at a fixed radial distance from the interior surface of the housing 2 . This fixed spacing ensures consistent light output and uni form irradiance at the housing surface , thereby providing even coverage of the target tissue . The distance may be selected based on optical modelling to achieve optimal dose distribution, and in one example is between 3 mm and 10 mm .

[0146] The light guide 50 may be fabricated with a surface roughness tailored to scatter light radially outward along its length . Such a roughened surface may be achieved by sandblasting, etching, or molding with a textured cavity surface . This scattering ef fect allows light to be emitted substantially uni formly along the entire length of the light guide 50 , whether the light guide 50 is tubular or rod-shaped . Alternatively, the light guide 50 may be fabricated with a lensed geometry, preferably formed by a plastic (polymer ) material with optic grains to disperse light and a metallic coating to spread light at predetermined positions or areas of the light guide .

[0147] 03691-PCT In some embodiments, at least one axially extending light guide 50 is disposed within the intracorporeal arm 3 and / or the extracorporeal arm 4 such that the light guide 50 extends generally parallel to the respective arm axis (Al, A2 ) (Figs. 5-6) . The light guide 50 is optically coupled to one or more light sources 5 located within the housing 2 and is positioned to direct light toward the translucent portion of the housing 2 associated with the arm in which the light guide 50 is disposed, so that light is emitted through the housing material to the target tissue. The light guide 50 may be tubular (hollow or solid) or rod-shaped, and may occupy a central location within the arm to promote uniform emission (Figs. 5-6) .

[0148] To improve dosage uniformity, the light guide 50 can be maintained at a fixed radial distance from the inner surface of the housing 2 along at least a major portion of its length. This spacing may be established by molded seats, ribs, or clips formed on an internal carrier, and can be selected based on optical modeling to yield the desired irradiance at the outer surface (e.g., a spacing in the range of 3-10mm) .

[0149] The light guide 50 can include surface features configured to control light extraction along its length. In one embodiment, the outer surface is roughened (e.g., sand-blasted, etched, or replication-molded texture) to scatter light substantially uniformly so that light is emitted along the entire axial extent of the guide. In another embodiment, the light guide 50 has a lensed geometry, for example micro-prismatic facets, Fresnel segments, or side-emitting lens elements formed integrally on the guide surface, to preferentially direct light radially toward the housing 2 while limiting stray

[0150] 03691-PCT emission. Diffusers and / or internal reflective features may be used in combination to shape the angular light distribution (Figs. 5-6) .

[0151] In certain embodiments, the at least one axially extending light guide 50 is fed by two or more light sources that are optically coupled to the guide at one end (end-coupling) and / or along its side (side-coupling) . A first light source may emit at a first wavelength and a second light source at a second, different wavelength. Coupling multiple sources into the same guide permits simultaneous or sequential delivery of distinct wavelengths along the guide's length, enabling, for example, blue («405 nm) and UVA («375nm) light to be combined within a single emission path for therapy (Figs. 5-6) .

[0152] Light sources of different wavelengths can alternatively be distributed along arrays within the intracorporeal arm 3 and the extracorporeal arm 4, or allocated by region, such that the intracorporeal arm includes sources / guide sections for both 380-500 nm light and, optionally, 315- 400 nm light, while the extracorporeal arm includes sources / guide sections for 380-500nm light (Figs. 3-4, 6) . The intracorporeal-only placement of 315-400 nm sources helps confine potentially eye-damaging wavelengths within the cavity.

[0153] In certain embodiments, the intracorporeal arm 3 and / or the extracorporeal arm 4 may have an irregular cross-sectional shape that departs from purely circular or elliptical forms. The irregular cross-section may include flat regions, concave surfaces, convex surfaces, or combinations thereof, to improve ergonomic fit, prevent rotation during

[0154] 03691-PCT use, or enhance comfort for the user. The irregular crosssection may be uniform along the arm length or may vary along the longitudinal axis.

[0155] In certain embodiments, the device 1 is configured to emit light at two or more different wavelengths simultaneously or sequentially. For example, the device 1 may comprise UVA light sources emitting at approximately 375 nm to target bacteria, in combination with blue light sources emitting at approximately 405 nm to target yeast or fungal pathogens. The light sources of different wavelengths may be alternated along an array or positioned in distinct regions of the intracorporeal arm 3 and / or extracorporeal arm 4 to optimize therapeutic effect.

[0156] The device can be configured so that the first wavelength (e.g., in the UVA range around 365-380 nm) is suitable for treating bacterial infections, while the second wavelength (e.g., 00-420 nm blue) is suitable for treating fungal infections. These wavelengths may be emitted simultaneously or in alternating sequences under microprocessor control to address mixed or uncertain etiologies without changing devices or repositioning the arms.

[0157] In one embodiment, the area of the housing 2 where the intracorporeal arm 3 meets the extracorporeal arm 4 includes a recess 13 configured to accommodate the pubic bone of the user during insertion and treatment. The recess 13 may reduce the cross-sectional profile in that area and is shaped to improve comfort, alignment, and stability of the device 1 during use.

[0158] In some embodiments, the placement of light sources 5 or light guides 50 is designed to control the angle of emitted

[0159] 03691-PCT light relative to the housing surface . For example , optical lenses , di f fusers , or reflective coatings may be incorporated inside the housing 2 to direct light toward the target tissue while minimi zing stray light and optimi zing energy ef ficiency .

[0160] In certain embodiments , the microprocessor 8 is programmed to autonomously control the light sources 5a, 5b , 5c such that activation occurs only when the sensor arrangement 7 detects that the intracorporeal arm 3 is inserted at least to the predefined extent X within the body cavity . The microprocessor 8 is further programmed to deactivate the light sources 5a, 5b, 5c automatically when the sensor arrangement 7 detects that the intracorporeal arm 3 is no longer inserted to the predefined extent X . This control may be executed without user intervention and may be implemented using hardware logic, embedded firmware , or software instructions stored on a non-transitory computer- readable medium .

[0161] A corresponding method of emitting light includes providing any of the devices described herein, supplying electrical power from the internal energy source 6 to the light sources 5 , and emitting light through the translucent housing 2 and / or via the axially extending light guide 50 while the sensor arrangement 7 indicates that the intracorporeal arm 3 is inserted to at least the predefined extent (X / E ) . In embodiments using a roughened or lensed light guide 50 , the method further comprises distributing the emitted light substantially uni formly along the arm axis to provide even tissue irradiance . In dual-wavelength modes , the method comprises emitting the first and second wavelengths simultaneously or sequentially, wherein the first wavelength targets bacteria and the second wavelength

[0162] 03691-PCT targets fungi, as controlled by the microprocessor 8

[0163] (Figs . 2-6) .

[0164] To enhance comfort and placement stability, one or both arms may have an irregular cross-section (non-circular , non-elliptical ) with flat, concave, and / or convex regions, the shapes possibly varying along the arm axis to better match anatomy and reduce rotation (Figs. 3-4) . A recess 13 may be formed where the intracorporeal arm 3 meets the extracorporeal arm 4 to accommodate the pubic bone, promoting correct alignment and reducing pressure during treatment (Figs. 2-3) . The extracorporeal arm may include an opaque section 4c facing away from the body to shield against unwanted outward emission, while a translucent section 4b faces the target external tissue (Fig. 3) .

[0165] In some implementations, the microprocessor 8 is configured to drive the light sources 5a, 5b, 5c according to one or more predetermined patterns or sequences. The term "pattern" may include temporal modulation (e.g., flashing, pulsing, or sequential activation of individual light sources) or spatial modulation (e.g., activating different subsets of the light sources in a repeating or nonrepeating order) . The term "sequence of intensity" may include varying the luminous output of one or more light sources over time according to a programmed schedule, ramp function, sinusoidal modulation, or other predetermined waveform. These patterns or sequences may be selected to enhance visualization, improve tissue differentiation, or minimize heat generation.

[0166] In certain embodiments, the device (1) further comprises wireless communication circuitry (11) operatively coupled

[0167] 03691-PCT to the microprocessor (8) . The wireless communication circuitry (11) may be configured to transmit data, such as sensor readings or operational status, from the microprocessor (8) to a user interface (9) , and optionally to receive data or commands from the user interface (9) for delivery to the microprocessor (8) . Suitable wireless communication protocols include, but are not limited to, Bluetooth®, Bluetooth Low Energy (BLE) , Wi-Fi, ZigBee®, near-field communication (NFC) , infrared (IR) transmission, or proprietary radio-frequency (RE) protocols. The wireless communication circuitry (11) may be implemented as a discrete module, an integrated circuit, or a system-on-chip (SoC) with embedded wireless capability .

[0168] The continuous emission of light may be conditioned upon the ongoing detection signal from the sensor arrangement (7) . If the detection signal ceases, the microprocessor (8) may immediately terminate light emission. This ensures that the light sources (5a, 5b, 5c) operate only when the intracorporeal arm (3) is positioned for intended use, thereby conserving energy and reducing unnecessary exposure .

[0169] The microprocessor 8 as used herein refers to any suitable control unit, including but not limited to a central processing unit (CPU) , microcontroller unit (MCU) , application-specific integrated circuit (ASIC) , programmable logic controller (PLC) , or field-programmable gate array (FPGA) . The control logic for operating the light sources (5a, 5b, 5c) and interpreting signals from the sensor arrangement (7) may be implemented entirely in hardware, entirely in software, or in any combination thereof .

[0170] 03691-PCT In an embodiment , the device 1 i s configured for emitting light within a body cavity and simultaneously on tissue outside the body cavity .

[0171] In alternative embodiments , the sensor arrangement may detect insertion depth indirectly, such as by proximity sensing, imaging, pressure sensing, or fluid pressure variation .

[0172] The various aspects and implementations have been described in conj unction with various embodiments herein . However, other variations to the disclosed embodiments can be understood and ef fected by those skilled in the art in practicing the claimed sub ect-matter, from a study of the drawings , the disclosure , and the appended claims . In the claims , the word "comprising" does not exclude other elements or steps , and the indefinite article "a" or "an" does not exclude a plurality . A single processor or other unit may ful fill the functions of several items recited in the claims . The mere fact that certain measures are recited in mutually di f ferent dependent claims does not indicate that a combination of these measures cannot be used to advantage . A computer program may be stored / distributed on a suitable medium, such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware , but may also be distributed in other forms , such as via the Internet or other wired or wireless telecommunication systems .

[0173] Components described herein may be substituted by equivalent structures , elements , or methods that perform substantially the same function in substantially the same way to achieve substantially the same result .

[0174] 03691-PCT The reference signs used in the claims shall not be construed as limiting the scope. Unless otherwise indicated, the drawings are intended to be read (e.g., cross-hatching, arrangement of parts, proportion, degree, etc.) together with the specification, and are to be considered a portion of the entire written description of this disclosure. As used in the description, the terms "horizontal", "vertical", "left", "right", "up" and "down", as well as adjectival and adverbial derivatives thereof (e.g., "horizontally", "rightwardly", "upwardly", etc.) , simply refer to the orientation of the illustrated structure as the particular drawing figure faces the reader. Similarly, the terms "inwardly" and "outwardly" generally refer to the orientation of a surface relative to its axis of elongation, or axis of rotation, as appropriate .

[0175] 03691-PCT

Claims

CLAIMS1. A device (1) for emitting light within a body cavity and / or on tissue outside the body cavity, the device comprising :• a housing (2) comprising: o an intracorporeal arm (3) extending along a first arm axis (Al) ; and o an extracorporeal arm (4) extending along a second arm axis (A2) , the first arm axis (Al) intersecting the second arm axis (A2) , the housing (2) being formed, at least in part, of a translucent material configured to allow propagation of light through the housing (2) ;• a plurality of light sources (5) arranged within the housing (2) so as to emit light through the translucent material;• an energy source (6) disposed within the housing (2) and operatively coupled to the light sources (5) to supply electrical power thereto;• a sensor arrangement (7) disposed within or on the housing (2) and configured to generate a detection signal indicative of whether the intracorporeal arm (3) is inserted at least to a predefined extent (X) within the body cavity; and• a microprocessor (8) disposed within the housing (2) and operatively coupled to the sensor arrangement (7) and the light sources (5) , the microprocessor (8) being programmed to: o activate at least one of the light sources (5) upon receiving the detection signal; and maintain continuous emission of light from the at least one light source (5) while the detection signal indicates that the intracorporeal arm (3) is inserted at least to the predefined extent (X) within the body cavity.03691-PCT2. The device (1) according to claim 1, wherein the first arm axis (Al) extends at an angle (a) to the second arm axis (A2) , the angle (a) being 45°<a<90°, preferably 75°<a<90° .

3. The device (1) according to any one of the previous claims, wherein each light source (5) is deactivated by means of a user interface (9) , by means of a timer connected to the microprocessor (8) , and / or by means of the sensor arrangement (7) detecting extraction of the intracorporeal arm (3) from the body cavity.

4. The device (1) according to any one of the previous claims, wherein the user interface (9) comprises an analogue interface arranged on the extracorporeal arm (4) and / or a digital interface downloaded on a digital apparatus (10) connected to the device (1) .

5. The device (1) of any one of the preceding claims, further comprising wireless communication circuitry (11) , operatively coupled to the microprocessor (8) and configured to transmit data from the microprocessor (8) to the user interface (9) and, optionally, to receive data from the user interface (9) for delivery to the microprocessor (8) .

6. The device (1) according to any one of the previous claims, wherein the sensor arrangement (7) comprises a plurality of sensors (12) arranged in the intracorporeal arm ( 3 ) .

7. The device (1) according to claim 6, wherein the sensor arrangement (7) is configured to sequentially detect insertion of the intracorporeal arm (3) into the body03691-PCTcavity and / or extraction of the intracorporeal arm (3) from the body cavity, the sequential detection being achieved by means of at least one array of sensors (12) arranged in the intracorporeal arm (3) , the array extending parallel with the first arm axis (Al) .

8. The device (1) according to any one of the previous claims, wherein the sensor arrangement comprises at least one of a capacitive sensor, a light sensor, and / or a temperature sensor.

9. The device (1) according to any one of the previous claims, wherein the plurality of light sources (5) are arranged in the intracorporeal arm (3) and / or in the extracorporeal arm (4) .

10. The device (1) according to any one of the previous claims, wherein the plurality of light sources (5) comprises light emitting diodes configured to emit light in a 380-500 nm spectrum and, optionally, in a 315-400 nm spectrum.

11. The device (1) according to claim 10, wherein light sources (5) configured to emit light in the 380-500 nm spectrum are arranged in the intracorporeal arm (3) and in the extracorporeal arm (4) , and wherein light sources (5) configured to emit light in the 315-400 nm spectrum are arranged in the intracorporeal arm (3) .

12. The device (1) according to any one of the preceding claims, comprising at least one axially extending light guide (50) in the intracorporeal arm (3) and / or in the extracorporeal arm (4) , the at least one light guide (50) being configured to guide light from one or more of the03691-PCTplurality of light sources (5) towards the housing (2) , and the at least one light guide (50) preferably being tubular or rod-shaped.

13. The device (1) according to claim 12, wherein light guide (50) has a roughened outer surface configured to scatter light, or has a lensed geometry.

14. The device (1) according to any one of the previous claims, wherein each light source (5) or the light guide (50) arranged in the intracorporeal arm (3) is arranged at a fixed distance (D) from an interior surface of the housing (D) .

15. The device (1) according to any one of the previous claims, wherein the intracorporeal arm (3) and, optionally, the extracorporeal arm (4) has an irregular cross-section, the cross-section extending in a plane (P) perpendicular to the first arm axis (Al) and the second arm axis (A2) , respectively .

16. The device (1) according to any one of the previous claims, wherein an area of the housing (2) , where the intracorporeal arm (3) intersects the extracorporeal arm (4) , comprises a recess (13) configured to accommodate a pubic bone of a user, the recess (13) comprising a reduction in cross-section of the intracorporeal arm (3) and of the extracorporeal arm (4) .

17. The device (1) according to any one of the previous claims, wherein the intracorporeal arm (3) comprises a translucent material configured to allow light in the 380- 500 nm spectrum and, optionally, light in the 315-400 nm spectrum, to radiate through the material.03691-PCT18. The device (1) according to any one of the previous claims, wherein the extracorporeal arm (4) comprises a first section (4b) of translucent material configured to allow light in the 380-500 nm spectrum to radiate through the first section, and a second section (4c) of opaque material preventing light in the 380-500 nm spectrum from radiating through the second section.

19. The device (1) according to any one of the previous claims, comprising a user interface (9) connected to the microprocessor (8) for activating the light source (s) (5) .

20. The device of claim 1, wherein the microprocessor (8) is configured to autonomously activate and deactivate the light sources (5a, 5b, 5c) when the sensor arrangement (7) detects that the intracorporeal arm (3) is inserted, to a predefined extent (E) , within the body cavity.

21. The device of claim 20, wherein the microprocessor (8) is configured to activate the light sources (5a, 5b, 5c) according to a predetermined pattern or sequence and / or according to a predetermined pattern or sequence of intensity, the initiation of such light emission being triggered by the sensor arrangement (7) detecting that the intracorporeal arm (3) is inserted, to the predefined extent (E) , within the body cavity.

22. The device of claim 20 or 21, wherein the microprocessor (8) is configured to deactivate the light sources (5a, 5b, 5c) when the sensor arrangement (7) detects that the intracorporeal arm (3) is not inserted to the predefined extent (E) within the body cavity.03691-PCT23. A method of emitting light within a body cavity and / or on tissue outside the body cavity, the method comprising:• providing a device (1) comprising: o a housing (2) comprising an intracorporeal arm (3) extending along a first arm axis (Al) and an extracorporeal arm (4) extending along a second arm axis (A2) , the first arm axis (Al) intersecting the second arm axis (A2) , the housing (2) comprising a translucent material configured to allow propagation of light through the housing (2) ; o a plurality of light sources (5) arranged within the housing (2) ; o an energy source (6) arranged within the housing (2) ; o a sensor arrangement (7) configured to detect whether the intracorporeal arm (3) is inserted at least to a predefined extent (X) within the body cavity; and o a microprocessor (8) configured to activate at least one of the light sources (5) and to maintain continuous emission of light from the at least one light source (5) while the sensor arrangement (7) detects that the intracorporeal arm (3) is inserted at least to the predefined extent (X) within the body cavity;• inserting the intracorporeal arm (3) of the device (1) into the body cavity to the predefined extent (X) ;• detecting, via the sensor arrangement (7) , insertion of the intracorporeal arm (3) at least to the predefined extent (X) ;• activating at least one of the light sources (5) ; and• emitting light continuously from the at least one light source (5) while the sensor arrangement (7)03691-PCTdetects that the intracorporeal arm (3) is inserted at least to the predefined extent (X) within the body cavity .

24. The method of claim 23, wherein activating at least one of the light sources (5) is in response to the detecting step .

25. The method of claim 23 or 24, wherein the microprocessor (8) is further configured to autonomously activate the light sources (5a, 5b, 5c) upon the sensor arrangement (7) detecting that the intracorporeal arm (3) is inserted at least to the predefined extent (E) within the body cavity, to deactivate the light sources (5a, 5b, 5c) when the sensor arrangement (7) detects that the intracorporeal arm (3) is not inserted to the predefined extent (E) , and to activate the light sources (5a, 5b, 5c) according to a predetermined pattern or sequence and / or according to a predetermined pattern or sequence of intensity.

26. A device (1) for emitting light within a body cavity and / or on tissue outside the body cavity, the device comprising :• a housing (2) comprising:- an intracorporeal arm (3) extending along a first arm axis (Al ) ; and- an extracorporeal arm (4) extending along a second arm axis (A2) , the first arm axis (Al) intersecting the second arm axis (A2) , the housing (2) being formed, at least in part, of a translucent material configured to allow propagation of light through the housing (2) ; one or more light sources (5) ;03691-PCT• an energy source (6) disposed within the housing (2) and operatively coupled to the one or more light sources (5) to supply electrical power thereto; and• at least one axially extending light guide (50) in the intracorporeal arm (3) and / or in the extracorporeal arm (4) , the at least one light guide (50) being configured to guide light from the one or more light sources (5) towards the housing ( 2 ) .

27. The device (1) according to claim 26, wherein the at least one axially extending light guide (50) is positioned within the housing (2) so as to emit light through the translucent material, the at least one light guide (50) preferably being tubular or rod-shaped.

28. The device (1) according to any one of claims 26 or 27, wherein the at least one light guide (50) has a roughened outer surface configured to scatter light or has a lensed geometry .

29. The device (1) according to any one of claims 26 to 28, wherein a first light source and a second light source are associated with the at least one axially extending light guide (50) , preferably with the first light source being configured to emit light at a first wavelength and the second light source being configured to emit light at a second wavelength different from the first wavelength.

30. A device (1) for emitting light within a body cavity and on tissue outside the body cavity, the device comprising :• a housing (2) comprising:- an intracorporeal arm (3) extending along a first arm axis (Al ) ; and03691-PCT- an extracorporeal arm (4) extending along a second arm axis (A2) , the first arm axis (Al) intersecting the second arm axis (A2 ) ; the housing (2) being formed, at least in part, of a translucent material configured to allow propagation of light through the housing (2) ;• a plurality of light sources (5) arranged within the housing (2) so as to emit light through the translucent material of both the intracorporeal arm (3) and the extracorporeal arm (4) ; and• an energy source (6) disposed within the housing (2) and operatively coupled to the light sources (5) to supply electrical power thereto.

31. The device (1) according to claim 30, wherein the plurality of light sources (5) comprise a first light source configured to emit light at a first wavelength and a second light source configured to emit light at a second wavelength different from the first wavelength.

32. The device (1) according to claim 31, wherein the first wavelength is suitable for treating bacterial infections and the second wavelength is suitable for treating fungal infections .

33. The device (1) according to any one of claims 31 or 32, wherein the intracorporeal arm (3) has at least a first and a second light source associated therewith, and the extracorporeal arm (4) has at least one light source associated therewith.

34. A method of emitting light within a body cavity and / or on tissue outside the body cavity, the method comprising:03691-PCT• providing a device (1) according to any one of claims 26 to 33;• supplying electrical power from an energy source (6) disposed in a housing (2) of the device (1) to one or more light sources (5) ; and• emitting light from the one or more light sources (5) through a translucent portion of the housing (2) and / or via at least one axially extending light guide (50) in an intracorporeal arm (3) and / or an extracorporeal arm (4) .

35. The method according to claim 34, wherein the light is emitted through the at least one axially extending light guide (50) having a roughened outer surface configured to scatter light or a lensed geometry.

36. The method according to claim 34 or 35, wherein light is emitted at a first wavelength and at a second wavelength different from the first wavelength.

37. The method according to claim 36, wherein the first wavelength is suitable for treating bacterial infections and the second wavelength is suitable for treating fungal infections .03691-PCT

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