Vibration unit for stimulating an acupressure point

Abstract

The invention relates to a vibration unit (4) for stimulating an acupressure point (22). Arranged in the interior (13) of the vibration unit (4) are an energy store (11) and a motor (12) with control electronics (19). A chain (3) is furthermore attached to the head (5) of the vibration unit (4) to adapt the vibration unit (4) to the acupressure point (22), also known as CV 17. Different modes of power levels (I1, I2, IN) and associated frequencies can be set with at least one push button (10).

Description

[0001] VIBRATION UNIT FOR STIMULATION OF AN ACUPRESSURE POINT

[0002] The invention relates to a vibration unit for stimulating an acupressure point, in particular the KG 17. For this purpose, at least one energy storage device and a motor with control electronics are arranged inside the vibration unit.

[0003] The German utility model DE 20 2012 003 151 relates to a vibrating therapy pen with a housing that is detachably connected to a replaceable therapy tip. The therapy tip comprises an eccentric and an electric motor, which are combined into a single unit. The therapy pen must be manually applied to the area of ​​the body to be treated.

[0004] German patent application DE 10 2004 032 606 A1 discloses a massage and healing device for the stationary and mobile application of alternating pressure to limited areas of the skin and the underlying tissue. The device consists primarily of a substantially spherical or egg-shaped first massage body, the surface of which forms a large massage surface, and a substantially rod-shaped second massage body with an elongated shaft and two ends, one end of which has a first end piece for connection to a complementarily shaped connecting piece on the first massage body, and the second end of which has a second end piece for massaging with a small, curved massage surface. Here, too, the massage and healing device must be placed by hand on the area of ​​the body to be treated and moved accordingly for the massage.

[0005] German patent application DE 198 52 608 A1 relates to a device, in particular a handheld device, for vibration therapy primarily for treating muscles and the skeletal system. The device imparts a wobbling motion of the oscillating head upon rotation of the drive shaft by forming an angle between the drive shafts of the vibration exciter and the oscillating head. The device is compact in design, lightweight, and wear-resistant, allowing for cost-effective production. The device must be placed by hand on the area of ​​the body to be treated. German patent application DE 197 09 355 A1 relates to an acupressure stick with a built-in ball arrangement consisting of a freely rotatable main ball and a ball ring surrounding this main ball with freely rotatable smaller balls. The acupressure stick must be placed by hand on the area of ​​the body to be treated.

[0006] German patent application DE 10 2008 057 479 A1 discloses a device and method for strengthening the immune system through long-term stimulation of the thymus gland. The device for thermal, electrical, electromagnetic, and mechanical stimulation of the thymus gland is presented, for example, as a pendant with a necklace. When assembled, the pendant encloses the vibrating motor in a lid and the electronics in an intermediate piece. There is no display of the set intensity and / or frequency.

[0007] The website https: / / de.aliexpress.com / item / 1005003408412266-html discloses a metal vibrator that can be charged via a USB port. There is no display indicating the vibration settings (intensity and / or frequency).

[0008] The website https: / / de.aliexpress.com / item / 1005004489043127.html discloses a powerful bullet vibrator that can be worn as a necklace. There is no display of the set intensity and / or frequency. The website https: / / www.amazon.de / Crave-E25572-Vesper-Vibrator- silberfarben / dp / BOOPR3QK3G?th=1 offers a silver-colored vibrator that can be worn on a necklace. There is no display of the vibration settings (intensity and / or frequency).

[0009] The website https: / / www.etsy.eom / at / listing / 1414174361 / 1 Ox-vibrating-silicone-heart-necklace features a vibrating silicone heart. There is no indication of the vibration setting (intensity and / or frequency).

[0010] State-of-the-art treatment methods are known, for example, for situation-related nervousness or excitement, which use relaxation techniques, medication and / or therapies to get nervousness or excitement under control.

[0011] The concept is based on the method of acupressure, which involves applying pressure with fingers or a device to specific acupressure points to reduce stress and increase well-being. This healing method has the advantage of being easy to apply, without side effects, and supports the user in achieving their full potential.

[0012] The object of the invention is therefore to create a vibration unit for stimulating an acupressure point, which can be used easily and at any time, and which allows the adjustment of the vibration unit to be carried out easily and which allows the adjustment to be clearly recognized.

[0013] This object is achieved by a vibration unit for stimulating an acupressure point, which comprises the features of claim 1.

[0014] In one embodiment, the vibration unit has a cylindrical shaft in which the energy storage device and the motor with the control electronics are housed. The cylindrical shaft carries a detachable head, with the shaft being closed at a free end opposite the head. At least one push button is provided on the cylindrical shaft of the vibration unit, which serves to switch the vibration unit on and off and to adjust the power levels and the vibration frequency associated with the power levels. Furthermore, a display is formed on the shaft of the vibration unit for displaying the set power levels and the set associated vibration frequency. A chain is attached to the head of the vibration unit to position the vibration unit on the acupressure point.

[0015] The advantage of the invention is that it provides a simple application for stimulating an acupressure point, which can be used whenever needed. Furthermore, the vibration unit according to the invention has the advantage that, when used, the user can definitively identify the set power level and the associated power setting. According to one possible embodiment of the invention, the at least one push button is designed as a rocker switch to increase and decrease the power levels and the associated vibration frequency of the vibration unit.

[0016] The advantage of this design is that the push button is accessible at any time, even while wearing the device, for adjusting the power level (intensity level) and the associated vibration frequency. For example, the push button can be used to select several (preferably three) constant power levels of the motor (vibration motor) over time, namely low, medium, and high, depending on preference and preference. Likewise, the push button can be used to select or adjust various frequencies and pulse shapes for the vibration of the motor.

[0017] The advantage is that the vibration and frequency of the vibration can be adjusted to the user's needs.

[0018] According to one possible embodiment, the display is divided into several sections. Each section represents one of the possible performance levels of the vibration unit. Each of the performance levels defines a different performance level, with several different vibration frequencies being adjustable for each performance level. The same set of different vibration frequencies can be set for each of the performance levels.

[0019] According to one embodiment, the display is divided into three sections. Thus, three power levels can be realized and displayed on the display, which the user of the vibration unit can easily and reliably read. Consequently, as already mentioned above, the three identical but different vibration frequencies can be set at each power level.

[0020] Preferably, in each of the three power levels, three frequencies, such as 1 Hz, 7.83 Hz and 12.13 Hz, can be set using the push button. The three power levels together with the three adjustable frequencies result in 9 modes that are stored in the control electronics. At the three power levels, the three frequencies always run through one after the other. At the first power level, modes 1 - 3 can be set, with 1 Hz being the first, then 7.83 Hz and finally 12.13 Hz being the last. At the second power level, modes 4 - 6 can be set with the frequencies 1 Hz, then 7.83 Hz and finally 12.13 Hz. At the third power level, modes 7 - 9 can be set with the frequencies 1 Hz, then 7.83 Hz and finally 12.13 Hz.

[0021] The frequencies always remain fixed, but the vibration changes.

[0022] The advantage of being able to adjust and read the power levels and the corresponding frequencies is that the user can make the setting that suits him best and can also reliably check the setting made.

[0023] According to a further embodiment, the head is designed to be detachable from the shaft of the vibration unit. A charging cable is connectable to the shaft to charge the energy storage device of the vibration unit via a power source.

[0024] This design has the advantage of avoiding possible damage to the charging cable connection inside the shaft.

[0025] According to a further embodiment, at least the shaft of the vibration unit is made of stainless steel with a nickel-free outer coating.

[0026] This has the advantage that allergies can be avoided.

[0027] According to one possible embodiment, a design element is detachably attached to the cylindrical shaft of the vibration unit. The attached design element is positioned on the cylindrical shaft in such a way that the at least one push button is accessible and the display is readable.

[0028] According to another possible embodiment of the invention, a design element can be detachably attached to the cylindrical shaft of the vibration unit. The design element is made of an elastic material, and an elastic material strip is attached to the back of the design element. This allows the vibration unit to be detachably and force-fittedly held between the back of the design element and the material strip. Preferably, the material of the design element and the material strip are identical. According to another embodiment of the invention, the material of the design element and the material strip is designed to be washable.

[0029] The advantage of the detachable and force-locked mounting of the vibration unit between the back of the design element and the material strip is that the design element can be replaced. Furthermore, the vibration unit can be removed for cleaning the design element to protect the electronic components inside the vibration unit from moisture.

[0030] According to a preferred embodiment, the material of the design element and the material strip can be silicone. Silicone is a material often used for medical devices and products due to its special properties. It is easy to maintain and washable, and is therefore considered very hygienic.

[0031] One possible design element is a spring, which, together with the material strip, serves as a silicone sleeve for the vibration motor. The spring should be between 8 and 10 cm long and 3 to 5 cm wide.

[0032] According to a further embodiment of the invention, the chain attached to the head of the vibration unit is dimensioned such that, when the vibration unit is in use, it rests on an acupressure point, KG 17, of the user. The optimal length of the chain is 50 cm to 60 cm and can be adjusted depending on the user's preference and anatomical characteristics.

[0033] According to another possible embodiment of the invention, the head can be removed from the shaft of the vibration unit to connect a charging cable to the shaft. This allows the vibration unit's energy storage to be recharged. The energy storage has a battery life of approximately 40 minutes, which is sufficient for two applications of the vibration unit. The charging cable has a USB connection adapter, and the charging time is approximately 1 hour and 30 minutes.

[0034] It is self-evident to a person skilled in the art that the material of the vibration unit is not exclusively limited to stainless steel or stainless steel with a coating. The material of the vibration unit should be such that it transmits the vibrations of the motor inside the vibration unit without dampening. The vibration unit can also be provided with different coatings. The shape of the vibration unit is not limited to a cylindrical shape. The material of the design element and that of the material strip can be different, whereby the only requirement is that the vibration unit is detachably and force-fitted to the design element. With a vibration unit, for example, different design elements can be sold as a set so that they can be exchanged at any time according to the user's wishes.

[0035] The invention and its advantages will now be explained in more detail by means of exemplary embodiments with reference to the accompanying drawings, without thereby limiting the invention to the exemplary embodiment shown. The proportions in the figures do not always correspond to the actual proportions, as some shapes are simplified and others are shown enlarged relative to other elements for better illustration.

[0036] Figure 1 shows a person wearing the device for stimulating the acupressure point KG 17 (master point).

[0037] Figure 2 shows a schematic sectional view of the vibration unit along the length of the vibration unit.

[0038] Figure 3 shows a possible design of the vibration unit for stimulating an acupressure point.

[0039] Figure 4 shows a head removed from the vibration unit.

[0040] Figure 5 shows a possible embodiment of the display of the vibration unit, wherein a power level is set with an associated vibration frequency.

[0041] Figure 6 shows the possible embodiment of the display of the vibration unit from Fig. 5, wherein a different power level is set with the associated vibration frequency.

[0042] Figure 7 shows the possible embodiment of the vibration unit display from Figure 5, wherein a further power level is set with the associated vibration frequency. Figure 8 shows another possible embodiment of the vibration unit display, wherein a power level is set with an associated vibration frequency.

[0043] Figure 9 shows the possible embodiment of the display of the vibration unit from Fig. 8, wherein a different power level is set with the associated vibration frequency.

[0044] Figure 10 shows the possible embodiment of the display of the vibration unit from Fig. 8, wherein a further power level is set with the associated vibration frequency.

[0045] Figure 11 shows a possible embodiment of the vibration unit for stimulating the acupressure point, wherein a design element is attached to the vibration unit.

[0046] Figure 12 shows a possible embodiment of the design element for the vibration unit.

[0047] Figure 13 shows a side view of the vibration unit inserted into the design element.

[0048] Figure 14 shows a schematic sectional view along the section line AA shown in Fig. 6.

[0049] Figure 15 shows a charging cable connected to the vibration unit.

[0050] Figure 16 shows a possible embodiment of the power setting of the vibration with which the stimulation is carried out.

[0051] Figure 17 shows a possible embodiment of the frequency of the vibration profile for a given power level at which the stimulation is performed.

[0052] Identical reference numerals are used for identical or equivalently functioning elements of the invention. Furthermore, for the sake of clarity, only those reference numerals are shown in the individual figures that are necessary for the description of the respective figure. The figures merely illustrate exemplary embodiments of the invention, without, however, limiting the invention to the illustrated exemplary embodiments.

[0053] Figure 1 shows a user 20 wearing device 1 for stimulating an acupressure point 22. In the illustration shown here, the acupressure point 22 to be stimulated by device 1 is KG 17. Stimulation device 1 is worn by a chain 3. In the embodiment shown here, stimulation device 1 consists of a design element 2 and a vibration unit 4 (see, for example, Fig. 2 or Fig. 3). Chain 3 is dimensioned or can be adjusted such that vibration unit 4 of stimulation device 1 rests on acupressure point 22 (KG 17 or master point).

[0054] Figure 2 shows a schematic sectional view of the vibration unit 4 along the length L of the vibration unit 4. Provided inside 13 of the shaft 6 of the vibration unit 4, which is closed by the head 5, is an energy storage device 11 connected to a motor 12 configured as a vibration motor. The energy storage device 11 is a rechargeable battery. The motor 12 is an electric motor. Actuating the motor 12 triggers a vibration or a control electronics 19, which produces a vibration pattern or intensity of the vibration of the vibration unit 4.

[0055] Figure 3 shows an external view of a possible embodiment of the vibration unit 4. A cylindrical shaft 6 of the vibration unit 4 can be closed at one end with a head 5. The chain 3 is guided through the head 5. The shaft 6 is closed at a free end 7 opposite the head 5. The free end 7 of the shaft 6 is rounded. In the embodiment shown here, the shaft 6 is provided with at least one push button 10 near the head 5. The vibration unit 4 can be switched on and off via the at least one push head 10. Likewise, the intensity level of the vibration and / or a profile (frequency) of the vibration can be set via the at least one push head 10.According to the embodiment shown here, the shaft 6 of the vibration unit 4 is provided with at least one display 9, via which the at least one set vibration intensity level and / or a profile (frequency) of the vibration can be read. Figure 4 shows a head 5 removed from the vibration unit 4. The head 5 can, for example, be connected to the vibration unit 4 via a thread 16. As shown in Figure 15, a charging cable 17 connected to the vibration unit 4 can be connected to the head 5 removed from the vibration unit 4. In the illustration shown in Figure 15, the design element 2 is still attached to the vibration unit 4. A material strip 14 releasably secures the vibration unit 4 to the design element 2.

[0056] Figure 5 shows a possible embodiment of the display 9 of the vibration unit 4. In the embodiment shown here, the display 9 is divided into three sections 181, 182, and 183. The display 9 formed on the shaft 6 comprises a plurality of LEDs 25. In the representations of the vibration unit 4 shown in Figs. 5 - 7, the embodiment of the display 9 comprises nine LEDs 25, with three LEDs 25 each representing one of the three power levels h, I2 or I3. The print head 10 can be used to set the power levels h, I2 or I3 with an associated vibration frequency. In the representation in Fig. 5, the first power level h is set with the third vibration frequency of the vibration unit 4. As can also be seen from the illustrations in Fig. 5 - 7, each of the three power levels h, I2 or I3 comprises three LEDs 25. Each LED 25 of the three power levels H, I2 or I3 represents three different frequencies.The lower LED 25 represents a frequency that is lower than a frequency indicated by the middle LED 25, and this frequency is lower than the frequency indicated by the upper LED 25. In the vibration unit 4 shown in Fig. 5, the first power level H is set with the highest frequency, since all three LEDs 25 of the first section 181 for power level h are illuminated. For the purposes of description only, three power levels h, I2, or I3, each with three different frequencies, are used to explain the functionality of the vibration unit 4. It is obvious to a person skilled in the art that a limitation to three power levels h, I2, or I3, each with three frequencies, used for the purposes of description, cannot be interpreted as a limitation of the invention. Figure 6 shows the possible embodiment of the display 9 of the vibration unit 4 from Fig.5, wherein the second power level with the lowest frequency of vibration of the vibration unit 4 is set via the push button 10.

[0057] Figure 7 shows the possible embodiment of the display 9 of the vibration unit 4 from Fig. 5, wherein the third power level with the average frequency of the vibration of the vibration unit 4 is set via the push button 10.

[0058] Figure 8 shows a further possible embodiment of the display 9 of the vibration unit 4. Here, a power level with an associated vibration frequency is set. The display 9 formed on the shaft 6 is, for example, a display which, in the possible embodiment described here, is divided into three sections 181, 182 and 183. As in the embodiment described in Fig. 5, the three power levels h, I2 or I3 of the vibration unit 4 are set in a similar way. The display of the display 9 comprises a plurality of display elements 27. In the embodiment described here, the display 9 has nine display elements 27 which together define three power levels H, I2 or I3. In the illustration shown in Fig. 8, the first power level H with the lowest frequency is set via the push button 10.

[0059] Figure 9 shows the possible embodiment of the display 9 of the vibration unit 4 from Fig. 8, wherein the second power level I2 with the average frequency of the vibration of the vibration unit 4 is set via the push button 10.

[0060] Figure 10 shows the possible embodiment of the display 9 of the vibration unit 4 from Fig. 8, wherein the third power level I3 with the highest frequency of vibration of the vibration unit 4 is set via the push button 10.

[0061] It is obvious to a person skilled in the art that the display 9 can also be designed as an alphanumeric display in order to inform the user about the set power levels h, I2, ..., IN with the associated frequencies.

[0062] Figure 11 shows a possible embodiment of the device 1 for stimulation.

[0063] The vibration unit 4 is releasably mounted on a rear side 8 (see Fig. 13 and Fig. 14) of the design element 2. The design element 2 can be made of an elastic material. This has the advantage that the elasticity of the material allows the vibration unit 4 to be easily removed from or attached to the design element 2. The material of the design element 2 (holder for the vibration unit 4) can preferably be silicone, which is often used for medical devices and products due to its special properties. It is easy to maintain and washable and is therefore considered very hygienic.

[0064] Figure 12 shows another possible embodiment of the stimulation device 1. In the embodiment shown here, the design element 2 has the shape of a spring. The vibration unit 4 is detachably attached to the design element 2 such that a head 5 of the vibration unit 4 projects beyond the design element 2 (spring). A chain 3 is attached to the head 5 of the vibration unit 4, with which the stimulation device 1, as shown in Fig. 1, can be attached by the user 20 to the acupressure point 22 to be stimulated. Since the vibration unit 4 is detachably connected to the design element 2 in a force-locking manner, it is possible to connect differently designed design elements 2 to the vibration unit 4.

[0065] It is obvious to a person skilled in the art that the representation of the design element 2 in the form of a spring should not be construed as a limitation of the invention.

[0066] Figure 13 shows a side view of the vibration unit 4, which is releasably mounted on the design element 2. A material strip 14 is attached to the back 8 of the design element 2 such that the shaft 6 of the vibration unit 4 is held on the design element 2 in a force-fitting yet releasable manner between the back 8 of the design element 2 and the material strip 14. According to a preferred embodiment, the material strip 14 is glued to the back 8 of the design element 2. The material strip 14 is preferably made of the same material as the design element 2. The vibration unit 4 is preferably mounted such that the head 5 projects beyond the design element 2 and the push button 10 is accessible to the user 20. An opening 15 is formed in the head 5, through which the chain (not shown here) is guided.

[0067] Figure 14 shows a schematic sectional view along the section line AA shown in Fig. 6. The material strip 14 is attached to the back 8 of the design element 2 in such a way that the shaft 6, with its diameter D (see Fig. 6), rests against the back 8 of the design element 2 and the material strip 14, thus holding the vibration unit 4 in a force-locking manner.

[0068] Figure 16 shows a possible embodiment of the power setting of the vibration with which the stimulation of the acupressure point 22, in particular the KG 17 or

[0069] Master point, is carried out. In the illustration shown here, three power levels h, h, ... b can be set using the at least one push button 10. The setting of three power levels h, I2, ... h is merely an example and should not be understood as a limitation of the invention. A plurality of power levels H, I2, ... IN can be set using the vibration unit 4. Preferably, the power levels H, I2, ... IN of the vibration unit 4 can be set using the push button 10. According to one possible embodiment, for example, three power levels H (low), I2 (medium) and I3 (high) can be set according to preference and ideas, with each power level H, I2, ... I3 being assigned at least one vibration frequency.

[0070] Figure 17 shows a possible further embodiment of a profile frequency for a specific vibration power level H, I2, or I3, with which the stimulation of acupressure point 22 is carried out. In the embodiment shown here, the vibration profile consists of a plurality of temporally successive rectangular pulses 30. The representation of rectangular pulses 30 is merely one possible embodiment and should in no way be construed as a limitation of the invention. It is obvious to a person skilled in the art that the vibration profile can also be a sine or cosine wave, or even rounded rectangular pulses.

[0071] It will be obvious to a person skilled in the art that the number of three power levels h, I2 or I3 used in the description of Fig. 16, the frequencies of the vibrations per power level h, I2 or I3 that can be set with the vibration unit 4 (profiles associated with the power levels) are to be regarded merely as examples for the description and are not to be understood as a limitation of the invention.

[0072] It is believed that the present disclosure and many of the advantages recited therein will be understood from the foregoing description. It will be apparent that various changes in form, construction, and arrangement of components may be made without departing from the disclosed subject matter. The form described is merely illustrative, and it is the intent of the appended claims to encompass and embrace such changes. Accordingly, the scope of the invention should be limited only by the appended claims.

[0073] List of reference symbols

[0074] 1 device

[0075] 2 design elements

[0076] 3 Chain

[0077] 4 Vibration unit

[0078] 5 heads

[0079] 6 shaft

[0080] 7 Free end

[0081] 8 Back

[0082] 9 Advertisement

[0083] 10 push button

[0084] 11 Energy storage

[0085] 12 Engine

[0086] 13 interior

[0087] 14 material strips

[0088] 15 Opening

[0089] 16 threads

[0090] 17 charging cables

[0091] 18i, 182, ... , 18N Section

[0092] 19 Control electronics

[0093] 20 users

[0094] 22 acupressure point

[0095] 25 LED

[0096] 27 Display element

[0097] 30 rectangular pulses

[0098] D Diameter

[0099] L Length h, I2,... IN Performance level

Claims

AMENDED CLAIMS received by the International Bureau on 15 May 2024 (15.05.2024) 1. A vibration unit (4) for stimulating an acupressure point (22), wherein the vibration unit (4) consists of a cylindrical shaft (6), in the interior (13) of which at least one energy store (11) and a motor (12) with control electronics (19) are accommodated, characterized by; • a detachable head (5) which is attached to the cylindrical shaft (6) by means of a thread (16) and closes the cylindrical shaft (6) towards a free end (7); • a push button (10) provided on the cylindrical shaft (6) of the vibration unit (4), the push button (10) serving to switch on and off and to set power levels (h, I2, , IN) and a frequency of vibration of the vibration unit (4) associated with the power level (h, I2, , IN); • a display (9) on the shaft (6) of the vibration unit (4), the display (9) showing the set power levels (h, I2, , IN) and the set associated frequency of the vibration; and • a chain (3) attached to a head (5) of the vibration unit (4) to position the vibration unit (4) on the acupressure point (22).

2. Vibration unit (4) according to claim 1, wherein the push button (10) is designed as a rocker switch to switch the power levels (h, I2, , IN) and the associated frequency of vibration of the vibration unit (4) up and down.

3. Vibration unit (4) according to one of the preceding claims, wherein the display (9) is divided into several sections (I81, 182, ... , 18N) and each of the sections (I81, 182, ... , 18N) represents one of the power levels (h, I2, , IN) for which identical but different vibration frequencies can be set. AMENDED SHEET (ARTICLE 19) 4. Vibration unit (4) according to one of the preceding claims, wherein the head (5) is detachable from the shaft (6) of the vibration unit (4) by means of the thread (16) and a charging cable (17) is connectable to the energy storage device (11) in the shaft (6) of the vibration unit (4).

5. Vibration unit (4) according to one of the preceding claims; wherein at least the shaft (6) of the vibration unit (4) and the head (5) are made of stainless steel with a nickel-free outer coating.

6. Vibration unit (4) according to one of the preceding claims, wherein a design element (2) consists of an elastic material and is releasably and force-fittingly attached to the cylindrical shaft (6) of the vibration unit (4) via an elastic material stiffener (14).

7. Vibration unit (4) according to claim 6, wherein the attached design element (2) is seated on the cylindrical shaft (6) in such a way that the push button (10) is accessible and the display (9) is readable.

8. Vibration unit (4) according to claim 6, wherein the elastic material strip (14) is attached to a rear side (8) of the design element (2) in order to releasably and force-fittingly hold the vibration unit (4) on the rear side (8) of the design element (2).

9. Vibration unit (4) according to claim 8, wherein the material of the design element (2) and the material of the at least one material stiffener (14) are identical.

10. Vibration unit (4) according to claim 9, wherein the material of the design element (2) and the material of the material stiffener (14) are washable and consist of silicone. AMENDED SHEET (ARTICLE 19)

Images