WO2019068308A1

WO2019068308A1 - Stimulation device

Info

Publication number: WO2019068308A1
Application number: PCT/EP2017/075013
Authority: WO
Inventors: Florian Witt
Original assignee: EIS GmbH
Priority date: 2017-10-02
Filing date: 2017-10-02
Publication date: 2019-04-11

Abstract

The invention relates to a stimulation device for body parts, in particular those which are sensitive to stimulation, comprising: a pressure field generation device (10) which has at least one inner first chamber (14) and an outer second chamber (15), wherein the second chamber (15) is provided with at least one application opening (8) for at least partially placing onto a body part and the chambers (14, 15) are each connected to one another via at least one connection element (16), the opening cross-section of which is smaller at least at one point within the connection element (16) than the cross-section of at least one section of at least one of the chambers (14, 15) connected to the connection element (16); and a drive device (20, 22) which is designed to change the volume of the inner first chamber (14), whereby a change in the volume of the cavity (12) formed by the chambers (14, 15) and the at least one connection element (16) is brought about between a minimum volume and a maximum volume, and a stimulating pressure field is generated in the at least one application opening (8). The special feature of the invention is that the ratio of the change in the total volume to the minimum volume is no less than 1/8, preferably no less than 1/7, and also no greater than 1, preferably no greater than 1/2.

Description

stimulation device

The invention relates to a stimulation device for, in particular sensitive for stimulation, parts of the body, with a pressure field generating device having at least an inner first chamber and an outer second chamber, wherein the second chamber is provided with at least one application opening for at least partial placement on a body part and the chambers are each interconnected via at least one connecting element whose opening cross-section is smaller than the cross-section of at least one section of at least one of the chambers connected to the connecting element at least at one point within the connecting element, and a drive device which is designed, the volume of the inner first Change chamber, whereby a change in the volume of the cavity formed by the chambers and the at least one connecting element between a minimum volume and a maximum volume causes and in the at least one n Application opening a stimulating pressure field is generated.

Such a stimulation device is already known.

It is an object of the present invention to improve a stimulation device of the type mentioned in terms of its effect.

This object is achieved with a stimulation device for, in particular sensitive for stimulation, body parts, with a Druckfelderzeugungs- device having at least an inner first chamber and an outer second chamber, wherein the second chamber with at least one application opening for at least partial placement a body part is provided and the chambers are each interconnected via at least one connecting element whose opening cross section is smaller at least at one point within the connecting element than the cross section of at least one section of at least one of the chambers connected to the connecting element, and a drive device which is formed to change the volume of the inner first chamber, thereby causing a change in the volume of the cavity formed by the chambers and the at least one connecting element between a minimum volume and a maximum volume and in the At least one application opening a stimulating pressure field is generated, characterized in that the ratio of the change of the total volume to the minimum volume is not less than 1/8, preferably not less than 1/7, and also not greater than 1, preferably not greater than 1 / 2, is.

According to the invention, the ratio of the minimum volume to the volume change should not be greater than 8, preferably not greater than 7, since it has been found that otherwise the pressure and suction for a stimulation device with a construction of the type mentioned above becomes too low. The volume change is the difference between the maximum and minimum volumes. The volume of the cavity formed by the chambers and the at least one connecting element is defined as that volume which ends in the area of the application opening on a virtual planar surface which closes the application opening imaginarily.

Finally, the ratio of minimum volume to volume change is not less than 1 and preferably not less than 2, since it has also been found that otherwise, on the one hand, the power requirement of the drive device becomes too great and, on the other hand, an excessive and possibly painful negative pressure arises at the application opening.

Preferred embodiments and further developments of the invention are specified in the dependent claims.

Hereinafter, a preferred embodiment of the invention will be explained in more detail with reference to the accompanying drawings. Show it:

1 is a perspective side view of the stimulation device according to the invention according to a preferred first embodiment;

FIG. 2 is a front view of the stimulation device of FIG. 1; FIG.

FIG. 3 shows a longitudinal section through the stimulation device of FIG. 1; FIG.

Fig. 4 shows a generated with the stimulation device of Fig. 1 preferred

Pressure waveform;

5 shows a perspective side view of the stimulation device according to the invention according to a preferred second embodiment; and

6 shows a perspective side view of the stimulation device according to the invention according to a preferred third embodiment.

The stimulation device 1 shown in the figures in a first preferred embodiment has an elongate housing 2 with a first housing section 2a, an opposite second housing section 2b and an intermediate connection region 2d, the second housing section 2b being the elongated shape of the first housing section 2a and thus of the first housing section 2a overall housing 2 substantially continues. Preferably, the housing is made of plastic. As can be seen from FIGS. 1 to 3, in the exemplary embodiment shown, the two housing sections 2 a and 2 a are 2b rounded at its free end and taper slightly towards the connection area 2d out, which is designed slightly slimmer. On the first housing section 2a, a projecting extension 4 extending transversely to the longitudinal extension of the housing 2 is formed, while the second housing section 2b preferably serves as a handle for holding the stimulation device 1 during the application to be described in more detail below.

As can further be seen from FIG. 1, the housing 2 is composed in the direction of its longitudinal extent of two half-shells, of which one half-shell is provided with the mentioned extension 4. The two unshown in the figures half shells of the housing 2 are preferably glued together; Alternatively, it is also conceivable, for example, to connect the two half-shells of the housing 2 in a different way with each other, for example by means of screws or on the insides mounted locking means.

As shown in particular in FIGS. 1 and 3, a spout 6, which contains an opening, which can be seen in FIGS. 2 to 4 and identified by the reference numeral "8", is seated on the extension 4. Preferably, the spout 6 is made of a soft or flexible plastic material, in particular a silicone material.

In the extension 4, a pressure wave generating device 10 is accommodated, with the aid of which a stimulating pressure field is generated in the application opening 8. As can be seen in detail in particular in FIG. 3, the pressure field generating device 10 has a cavity 12 with an outer first end 12a and an inner second end 12b remote from the first end 12a, wherein the first end 12a simultaneously also the application opening 8 in FIG the spout 6 forms. As further shown in Fig. 3, the spout 6 has an outer portion 6a with which it is detachably secured to the extension 4 and an inner portion 6b, the outer portion 6a and the inner portion 6b of the spout 6 being in the region of Application opening 8 are connected to each other. The inner portion 6b of the spout 6 is formed in the manner of a sleeve and defines a leading to its outer first end 12a outer Thus, the inner wall of the sleeve-shaped inner portion 6b of the spout 6 simultaneously forms an outer portion of the inner or side wall of the cavity 12 leading to the application opening 8.

As can also be seen from FIG. 3, the cavity 12 is formed by two chambers 14, 15 and a channel 16 interconnecting the two chambers 14, 15, so that the channel 16 assumes the function of a connecting element between the two chambers 14, 15. In this case, the first chamber 14 is provided as an inner chamber and the second chamber 15 as an outer chamber. The outer second chamber 15 terminates at the outer first end 12a of the cavity 12 and thus at the application opening 8, which thus forms a first end of the second chamber 15. The first chamber 14 terminates inside the stimulation device 1 at the inner second end 12 b of the cavity 12, which also forms the second end of the first chamber 14. At one of the second end 12b of the cavity 12 opposite and located away from the first end of the first chamber 14, which is not further identified in Fig. 3, the channel 16 connects, in turn, in the outer first end 12a and thus the application opening 8 opposite and remote from this second end of the second chamber 15 opens.

In the illustrated embodiment, the cross-sectional area of the first chamber 14 is nearly constant over its entire length between its two ends. In principle, however, it is also conceivable to provide the first chamber 14 with a cross-sectional area varying over its length between its two ends, for example in the direction of the inner second end 12b of the cavity 12 and thus towards its inner second end at least a little bit bigger. Also, the second chamber 15 has a substantially over its entire length constant cross-sectional area, in the illustrated embodiment, just a little before the application opening 8 in the direction of the outer first end 12a of the cavity 12 and thus in the direction of the application opening 8 out a little , Likewise, it is basically possible, the second Chamber 15 to be provided with a over its length between its two ends changing cross-sectional area.

The two chambers 14, 15 may preferably have a substantially circular or elliptical cross section. In particular, the first chamber 14 should have a circular cross-section, while the second chamber

15 may have an elliptical cross section or a cross section which changes into an elliptical shape towards the application opening.

In the illustrated embodiment, the channel 16 forms a point of discontinuity with respect to the two chambers 14, 15. Accordingly, the cross-sectional area of the channel 16 at its pointing into the first chamber 14 opening, which is not marked in Fig. 3, only a fraction of the cross-sectional area of Also, the cross-sectional area of the channel 16 at its opening into the second chamber 15 opening, which is also not marked in Fig. 3, a fraction of the cross-sectional area of adjacent to the channel 16 second end of the second chamber 15th

The ratio of the cross-sectional area of the channel 16 at least at its opening facing the first chamber 14 to the cross-sectional area of the first chamber 14 adjacent the channel 16 should preferably be greater than 1/50, in particular greater than 1/50, depending on the desired performance of the stimulation device 1/25, preferably greater than 1/10, preferably greater than or equal to about 1/6. The ratio of the cross-sectional area of the channel 16 to the cross-sectional area of the adjacent channel

16 second end of the second chamber 15 should preferably be greater than 1/50, in particular greater than 1/25, preferably greater than 1/10, preferably greater than or equal to about 1/2, be.

The ratio of the length of the second chamber 15 to the length of the first chamber 14 should preferably be greater than 2, preferably greater than 6, preferably greater than 7, or be in the range between 3 and 7. In the illustrated embodiment, the channel 16 has over its entire length between the two chambers 14, 15 substantially constant cross-sectional area, and it is also conceivable in principle to provide the channel 16 with a changing over its length cross-sectional area.

Also, in the illustrated embodiment, the channel 16 is designed to be straight and rigid, the opening into the second chamber 15 of the channel 16 of the application opening 8 is opposite and the channel 16 is directed to the application opening 8.

As can also be seen from FIG. 3, the cavity 12 is sealed at its inner second end 12b and thus the inner first chamber 14 at its inner second end with a flexible membrane 18, preferably made of silicone, which extends over the entire cross section of the inner second end 12b of the cavity 12 and thus the inner second end of the inner first chamber 14 and is driven by a mechanism 20 by a drive motor 22. In this case, the mechanism 20 is designed so that the rotational movement of the output shaft 22a of the drive motor 22 is converted into a reciprocal longitudinal movement, whereby the membrane 18 in a movement transverse to the plane spanned by her in the illustrated embodiment alternately in the direction of the channel 16 and in this opposite direction is offset. In this way, the volume of the cavity 12 of the chamber 14 is changed in response to the rotation of the output shaft 22 a of the drive motor 22. Alternatively, it is also conceivable, for example, to arrange the membrane not at the inner second end remote from the channel 16 but, for example, in a side wall of the first chamber 14 and thus laterally or at one side of the first chamber 14, in which case its inner second end is closed accordingly.

The mechanism 20 preferably has an eccentric or a connecting rod in order to convert the rotational movement of the output shaft 22a of the drive motor 22 into a reciprocal longitudinal movement for the reciprocal deflection of the diaphragm 18. The reciprocal movement of the membrane 18 thereby causes a change the volume of the first chamber 14 and thus also of the entire cavity 12 formed by the two chambers 14, 15 and the channel 16 between a minimum volume and a maximum volume, so that in the application opening 8, a stimulating pressure field is generated. In principle, however, other types of drive are conceivable, which cause a deflection of the diaphragm 18 to the volume change of the cavity 12. This can also be done electromagnetically (eg with the aid of an electromagnetic linear drive, in particular using a movably mounted permanent magnet), piezoelectrically, pneumatically or hydraulically. However, the arrangement should be such that the ratio of the change in the volume of the entire cavity 12 formed by the two chambers 14, 15 and the channel 16 to the minimum volume is not smaller than 1/8 and preferably not smaller than 1/7, so the ratio of the minimum volume to the volume change is not greater than 8 and preferably not greater than 7, since otherwise the suction effect becomes too low during the movement of the membrane 18 in the direction away from the application opening 8. Furthermore, the arrangement should also be such that the ratio of volume change to minimum volume is not greater than 1 and preferably not greater than 1/2, so that the ratio of minimum volume to volume change should not be less than 1 and preferably not less than 2 because otherwise, on the one hand, the power requirement of the drive motor 22 becomes too great and, on the other hand, too great a negative pressure arises during the movement of the diaphragm 18 in the direction away from the application opening 8. In this way, by means of the drive motor 22 driven by the flexible membrane 18 alternately under and overpressures in the cavity 12 of the chamber 14 are generated.

The volume of the cavity 12 is defined as that volume which ends in the region of the application opening 8 on a virtual planar surface which closes the application opening 8 imaginarily when the membrane 18 is in its zero or middle position. The minimum volume of the cavity 12 is defined by the fact that the application opening 8 of the cavity 12 is imaginarily closed with a virtual planar surface and the membrane 18 is in a position with the smallest distance to the application opening 8 and thus in its maximum towards the application opening 8 deflected state located. The maximum volume of the cavity 12 is defined by the fact that the application opening 8 of the cavity 12 is imaginarily closed with a virtual planar surface and the membrane 18 in a position with the greatest distance to the application opening 8 and thus in a maximum away from the application opening 8 deflected state is located.

As can also be seen from FIG. 3, the drive motor 22, which is an electric motor in the exemplary embodiment described, is connected via an electrical cable 24 to an electronic control circuit board 26, which activates the drive motor 22. As further shown in Fig. 3, a battery 30 is connected to the control circuit board 26 via an electric cable 28, which supplies the drive motor 22 and the control circuit board 26 with the necessary electric power. The battery 30 may be either a non-rechargeable battery or a rechargeable battery. While in the stimulation device 1 according to the embodiment shown in Figures 1 to 3, the drive motor 22 in the connecting portion 2d between the first housing portion 2a and the second housing portion 2b and adjacent to the extension 4, the battery 30 is disposed in the second housing portion 2b, whereby the housing 2 is well balanced when the stimulation device 1 is held in the hand by the user.

As can also be seen from FIGS. 1 and 3, a switch-on button 32 is provided which can be actuated for switching the stimulation device 1 on and off from the outside of the housing 2 and is arranged in the slim central connection region 2d of the housing 2. Also, in the connection area 2d, a push-button 34 to be actuated from the outside, with which different operating states can be set, and a control light 36, which is preferably designed as a light-emitting diode and is visible from the outside, are arranged. The power button 32 and the button 34 are disposed directly on the control circuit board 26 mounted below the wall of the housing 2, while the control lamp 36 is connected to the control circuit board 26 via an electric wire not shown in the figures. In addition to driving the drive motor 22 takes in the illustrated embodiment, the electronic control circuit board 26 also the charging management of the battery 30. For this purpose, the control circuit board 26 is connected via an electrical cable 38 to charging contacts 40, which are arranged at the free end 2bb of the second housing section 2b and from the outside are accessible, as the figures 1 to 3 show. An external charging device, not shown in the figures, can be connected to these connection contacts 40 via a plug with magnetic plug contacts, which can be brought into contact with the connection contacts 40 for producing an electrical connection due to magnetic forces.

The described stimulation device 1 is designed as a handheld device and is placed for use with the nozzle 6 on a not shown in the figures, to be stimulated body part so that it is substantially enclosed in the region of the application opening 8 of the spout 6. During operation of the stimulation device 1, the body part to be stimulated is then exposed alternately to different air pressures and / or air currents by the reciprocal movement of the membrane 18. If after applying the spout 6 on the body part to be stimulated not too strong contact pressures are exerted, can largely escape any relative overpressures that may arise during the respective movement of the membrane 18 in the direction of the application opening 8, so therefore essentially the in FIG 4 shows a modulated relative negative pressure versus normal air pressure P ₀ . Nevertheless, as can be seen from the pressure curve of FIG. 4, at the same time relative overpressures relative to the normal pressure P ₀ can occur at a maximum, which, however, are substantially lower than the minima of the relative negative pressure. The amount of the relative overpressure, based on the normal pressure P ₀ , is usually not more than 10% of the amount of the relative negative pressure, based on the normal pressure P ₀ , but may also be higher depending on the operating condition and application. Alternatively, it is quite conceivable that the pressure field consists only of a pattern of relative negative pressures or relative overpressures, which is modulated on the normal pressure P ₀ . In particular, when the mechanism 20 has an eccentric, results in the sinusoidal-periodic pressure profile shown in Fig. 4. In the application, a distinction is made between a sealing operation, an open operation and a so-called semi-open operation.

When sealing operation, the spout 6 is placed on the first body part to be stimulated so that an exchange of air with the environment does not take place. In this operating state caused by the movement of the membrane 18 temporally, preferably periodically, changing pressure waves acting in the entire cavity 12. The pressure waves are essentially isotropic and thus also act upon the first body part to be stimulated. An air flow essentially does not take place.

The open operation is characterized in that an air exchange between the second chamber 15 and the environment takes place. In this operating state, the spout 6 is placed on the body part to be stimulated so that the application opening 8 surrounds the body part to be stimulated only partially and at least one gap-shaped space between at least a portion of the application opening 8 and at least a portion of the body part to be stimulated remains free, causing air from the second chamber 15 and thus escape from the entire cavity 12 into the environment. Also, in this operating state, air can be absorbed from the environment into the second chamber 15 and thus into the entire cavity 12, so that in this case a regular exchange of air takes place.

Finally, even a so-called. Semi-open operation is conceivable in which after first complete application of the spout 6 on the body part to be stimulated not too strong contact pressures are exerted, so that due to the flexibility of the stimulated first body part, as previously mentioned, any relative Overpressures can escape, while after the formation of a negative pressure in the cavity 12 upon movement of the membrane 18 in the direction of the channel 16 away due to the Sogeffektes formed by the over-opened portions of the body part to be stimulated again be attracted to the application port 8 and thus to be stimulated first body part completely closes the application opening 8 again. In this case, the body part to be stimulated thus acts in the manner of a check valve.

In contrast to the sealing operation, an air flow in the direction of the application opening 8 occurs both in open operation and in semi-open operation. The cross-sectional area of the channel 16 at least at its opening into the second chamber 15 opening opposite to the cross-sectional area of the second end adjacent to the channel 16 the second chamber 15 be dimensioned such that the channel 16 develops a nozzle effect and by reducing the volume of the first chamber 14, a compression of the air contained in the entire cavity 12 occurs, whereby an air flow in the form of reaching to the application opening 8 free jet from the channel 16 exit. Alternatively, the cross-sectional area of the channel 16 at least at its opening into the second chamber 15 opening opposite the cross-sectional area of the adjacent channel 16 located second end of the second chamber 15 but also be dimensioned such that by reducing the volume of the first chamber 14, a compression of the contained in the entire cavity 12 air occurs only in such a height that an air flow exits in the form of a free jet from the channel 16 into the second chamber 15, but ends at a distance in front of the application opening 8 and thus the body part to be stimulated in the Application opening 8 not reached. The latter also applies to a corresponding dimensioning of the cross-sectional area of the channel 16 at least at its opening pointing into the first chamber 14 with respect to the cross-sectional area of the first end of the first chamber 14 located adjacent to the channel 16.

The control circuit board 26 preferably has a memory, not shown in the figures, in which various modulation patterns are stored. By appropriate operation of the button 34, a desired modulation pattern can be selected to then drive the drive motor 22 accordingly.

FIG. 5 shows a stimulation device V according to a preferred second embodiment. The stimulation device V has an elongate housing 2 on, which is divided in the illustrated embodiment in three housing sections 2a, 2b and 2c. The first housing section 2a is arranged at an angle relative to the second housing section 2b. The third housing portion 2c forms a kind of extension of the second housing portion 2b, in the embodiment shown in Fig. 5 in a substantially aligned arrangement by the third housing portion 2c, the elongated, slightly curved shape of the second housing portion 2b substantially continues. In this case, in the connection region 2d between the second housing section 2b and the third housing section 2c, the first housing section 2a is arranged, which thus protrudes from the remaining housing, which is formed by the second and third housing sections 2b, 2c, and at an angle which is preferably smaller than 90 °, is oriented relative to the second housing portion 2b. As can also be seen from FIG. 5, the free end of the second housing section 2b is rounded off.

The first housing section 2a is provided with the extension 4 on its side facing the second housing section 2b and thus adjacent to the second housing section 2b. On the extension 4, the spout 6 is arranged, which contains the non-recognizable in Fig. 5 application port 8. The opening direction of the application opening is oriented substantially in the direction of the longitudinal extension of the elongate second housing section 2b, wherein the opening direction is preferably formed by a virtual axis which extends at right angles to a virtual plane spanned by the application opening. Preferably, the opening direction is approximately parallel to the longitudinal extension of the second housing section 2b or, as can be seen in FIG. 5, oriented approximately in the direction of the free end 2bb of the second housing section 2b.

The first housing section 2a can be placed with the grommet 6 arranged on the extension 4 on a first body part, not shown in the figures, which is preferably a first erogenous zone such as, for example, the clitoris. The second housing section 2b is designed for insertion into a second body part, likewise not shown in the figures, which is preferably a second erogenous zone such as, for example, the vagina. Thus, the second housing portion 2b assumes the function of a 'dildo', wherein the free end 2bb of the second housing portion 2b is rounded. The first and second housing sections 2a, 2b are oriented relative to one another in such a way that, when the stimulation device 1 is used, the first housing section 2a can be placed on the first body section with the application opening formed on the extension 4, while the second housing section 2b can be inserted simultaneously into the second body section. The third housing section 2 c serves as a kind of handle for handling the stimulation device 1.

FIG. 6 shows a stimulation device 1 "according to a preferred third embodiment, which differs from the stimulation device 1" depicted in FIG. 5 according to the preferred second embodiment in that the first and second housing sections 2 a connected to one another via the connection region 2 d, 2b are oriented in the manner of an "L" or "V" to each other and the third housing section is missing. This stimulation device 1 "can preferably also be used in the manner of a so-called" partner toy "during sexual intercourse, for which reason in the embodiment shown in FIG. 6 the second housing section 2b is slender and, if necessary, slender compared to the stimulation device V shown in FIG. also has shorter shape. For a better adaptation to the respective individual anatomy, especially in the last-mentioned application, the second housing section 2b should be movably connected to the first housing section 2a, for which purpose preferably the connecting area 2d may be formed as a flexible or elastic element.

In addition, the stimulation devices V and 1 "shown in FIGS 5 and 6 according to the preferred second and third embodiments, the same or at least comparable components as the stimulation device 1 according to the preferred first embodiment described above with reference to Figures 1 to 3. This applies not only for the construction of these matching components, but also for their function, so that reference is made to the description in order to avoid repetition, so also in the stimulation devices V and 1 "shown in FIGS adjacent part of the first housing section 2a a pressure wave generating device 10 housed, as previously explained with reference to FIG. 3 in detail.

The second housing section 2b provided for introduction into the second body part 2 b of the stimulation devices V 1 and 1 "shown in FIGS. 5 and 6 may additionally be subjected to vibration during use, for which purpose a further drive motor, not shown in the figures, may be provided Alternatively, however, it is also conceivable to additionally use the described drive motor 22 for the generation of a vibration by additionally driving a vibrating element arranged in the second housing section 2b, which may, for example, have a weight which is rotatable and eccentric with respect to the axis of rotation.

As FIGS. 5 and 6 also show, in contrast to the stimulation device 1 shown in FIGS. 1 to 3, in the case of the stimulation devices V and 1 shown there, only one switch 32 is provided which is preferably designed as a pushbutton and 5 and on the third housing section 2c and in the case of the stimulation device 1 "according to FIG. 6 on the first housing section 2a Switch 32 can set different operating states of the stimulation device 1 and is preferably designed as a light-emitting diode and visible from the outside indicator light 36 on or in the switch 32. Alternatively, it is also conceivable, instead of a single switch 32 as in the previously with reference to the figures to 3 described stimulation device 1 according to the preferred first embodiment ge disconnects a power button and another switch, especially buttons, to provide for setting the various operating conditions.

Finally, in the stimulation devices V and 1 "shown in Figures 5 and 6, according to the preferred second and third embodiments, the control circuit board 26 preferably has a memory, not shown in the figures, in which various modulation patterns for pressure wave generation and vibration are deposited appropriate Operation of the switch 32 can then be selected for operation a desired modulation pattern.

Claims

claims

Stimulation device for, especially sensitive to a stimulation, body parts, with

a pressure field generation device (10) which has at least one inner first chamber (14) and one outer second chamber (15), wherein the second chamber (15) is provided with at least one application opening (8) for at least partial placement on a body part and the Chambers (14, 15) in each case via at least one connecting element (16) are interconnected, the opening cross section at least at one point within the connecting element (16) smaller than the cross section of at least one portion of at least one of the connecting element (16) connected chambers (14 , 15), and a drive means (20, 22) adapted to change the volume of the inner first chamber (14), whereby a change in the volume of the of the chambers (14, 15) and the at least one connecting element ( 16) formed between the cavity (12) between a minimum volume and a maximum volume and in the at least one application opening (8) egg n stimulating pressure field is generated,

characterized in that

the ratio of the change in the total volume to the minimum volume is not less than 1/8, preferably not less than 1/7, and moreover not greater than 1, preferably not greater than 1/2.

Apparatus according to claim 1, characterized in that the cross-sectional area of opening into the second chamber (15) connecting element (16) at least at its opening into the second chamber (15) opening opposite the cross-sectional area of the connecting element (16) adjacent the end of the second chamber (15) is dimensioned such that the opening into the second chamber (15) opening of the opening into the second chamber (15) connecting element (16) unfolds a nozzle effect and in the case of only a partial placement of the application opening (8) on the body part Reduction of the volume of the first Chamber (14) a compression of a medium contained in the cavity (12) occurs, whereby a media flow in the form of an up to the application opening (8) reaching free jet from the opening into the second chamber (15) opening of the opening into the second chamber (15) Connecting element (16) in the second chamber (15) emerges.

Apparatus according to claim 1, characterized in that the cross-sectional area of the opening into the second chamber (15) connecting element (16) at least at its opening into the second chamber (15) opening opposite the cross-sectional area of the adjacent to the connecting element (16) located end of the second Chamber (15) is dimensioned such that in the case of only a partial placement of the application opening (8) on the body part by reducing the volume of the first chamber (14) compression of a medium contained in the cavity (12) occurs, whereby a media flow in the form a free jet in the second chamber (15) ending at a distance in front of the application opening (8) is created, which thus does not reach the body part in the application opening (8).

Apparatus according to claim 1 or 3, characterized in that the cross-sectional area of the adjoining the first chamber (14) connecting element (16) at least at its in the first chamber (14) facing opening with respect to the cross-sectional area of the adjacent to the connecting element (16) End of the first chamber (14) is dimensioned such that in the case of only a partial placement of the application opening (8) on the body part by reducing the volume of the first chamber (14) compression of a medium contained in the cavity (12) occurs, whereby a Media flow in the form of a free jet in the second chamber (15) ending at a distance in front of the application opening (8) is created, which thus does not reach the body part in the application opening (8).

Apparatus according to at least one of the preceding claims, characterized in that the ratio of the cross-sectional area of the in the second chamber (15) opening opening of the opening into the second chamber (15) connecting element (16) relative to the cross-sectional area of the adjacent to the connecting element (16) located end of the second chamber (15) greater than 1/50, in particular greater than 1/25 , preferably greater than 1/10, preferably greater than or equal to about 1/2.

Device according to at least one of the preceding claims, characterized in that the ratio of the cross-sectional area of the adjoining the first chamber (14) connecting element (16) at least at its in the first chamber (14) facing opening with respect to the cross-sectional area of adjacent to the connecting element ( 16) located end of the first chamber (14) is greater than 1/50, in particular greater than 1/25, preferably greater than 1/10, preferably greater than or equal to about 1/6, is.

Device according to at least one of the preceding claims, characterized in that at least one connecting element (16) forms a point of discontinuity with respect to at least one of its adjacent chambers (14, 15).

Apparatus according to at least one of the preceding claims, characterized in that the ratio of the length of the second chamber (15) relative to the length of the first chamber (14) is greater than 2, preferably greater than 6, preferably greater than 7, or in the range between 3 and 7 lies.

Apparatus according to at least one of the preceding claims, characterized in that the first chamber (14) has a cross-sectional area substantially constant either over its entire length between its end remote from the connecting element (16) and its end adjacent to the connecting element (16) is or increases to its end remote from the connecting element (16).

10. Device according to at least one of the preceding claims, characterized in that the second chamber (15) has a cross-sectional area which is either substantially constant over its entire length between its to the connecting element (16) adjacent end and the application opening (8) or enlarged towards the application opening (8).

1 1. A device according to at least one of the preceding claims, characterized in that in the second chamber (15) opening out connecting element (16) is designed as a channel. 12. Apparatus according to claim 1 1, characterized in that the channel is straight and / or rigid.

13. Apparatus according to claim 1 1 or 12, characterized in that the opening into the second chamber (15) opening of the channel of the application opening (8) opposite and the channel is directed to the application opening (8).

14. Device according to at least one of the preceding claims, characterized in that the at least one connecting element (16) opposite at least one of the chambers (14, 15), in particular the second chamber (15) forms a point of discontinuity. 15. Device according to at least one of the preceding claims, characterized in that the drive means (20, 22) and the first chamber (14) are formed so that in the deactivated state of the drive means (20, 22) the volume of the chambers ( 14, 15) and the at least one connecting element (16) formed cavity (12) is substantially equal to the maximum volume.

16. Device according to at least one of the preceding claims, characterized in that the inner first chamber (14) has a connection element (16) remote from the end, with a flexible, preferably made of silicone, membrane (18) is closed, which is moved by the drive means (20, 22) alternately in the direction of the first end of the first chamber (14) and in this opposite direction.

Device according to claims 15 and 16, characterized in that in the deactivated state of the drive means (20, 22) the membrane (18) occupies a position remote from the first end of the first chamber (14).

18. Apparatus according to claim 16 or 17, characterized in that the membrane (18) extends substantially over the entire cross-sectional area of the first end of the first chamber (14).

19. Device according to at least one of the preceding claims, characterized in that the application opening (8) containing portion of the outer second chamber (15) is provided as a replaceable spout (6), the inner side wall to the application opening

(8) forming the leading portion of the side wall of the second chamber (15).

Apparatus according to claim 19, characterized in that the portion of the side wall of the second chamber (15) leading from the inner side wall of the spout (6) to the application opening (8) substantially merges with the remaining portion of the side wall of the second chamber (15) flees.

Apparatus according to claim 19 or 20, characterized in that the spout (6) made of flexible material, preferably made of silicone. 22. Device according to at least one of the preceding claims, characterized in that at least one chamber (14, 15) has a substantially circular or elliptical cross-section.

23. Apparatus according to at least one of the preceding claims, characterized in that two chambers (14, 15) having the inner first chamber (14) and the outer second chamber (15), and a first chamber (14) with the second connecting element (16) are provided connecting the second chamber (15).

24. Apparatus according to at least one of claims 1 to 22, characterized in that at least one further chamber is arranged between the inner first chamber and the outer second chamber, on the one hand via at least one connecting element with the inner first chamber and on the other hand via at least one additional

Connecting element is connected to the outer second chamber.

25. Apparatus according to at least one of the preceding claims, characterized in that the pressure field consists of a pattern of relative underpresses and overpressures which are modulated onto a reference pressure, preferably to the normal pressure.

26. Apparatus according to claim 25, characterized in that the amount of the relative overpressure, based on the normal pressure (P ₀ ), smaller than the amount of the relative negative pressure, based on the normal pressure (P ₀ ), is.

27. Apparatus according to claim 26, characterized in that the amount of the relative overpressure, based on the normal pressure (P ₀ ), not more than

10% of the amount of the relative negative pressure, based on the normal pressure (P ₀ ), is.

28. Apparatus according to at least one of claims 1 to 24, characterized in that the pressure field consists of a pattern of relative negative pressures, which are aufmoduliert to a reference pressure, preferably to the normal pressure (P ₀ ). Device according to one of claims 25 to 28, characterized in that the pressure field has a substantially sinusoidal-periodic pressure profile.

Apparatus according to at least one of the preceding claims, characterized by a control device (26, 32, 34), which controls the drive device (20, 22) and at least one operating means (32, 34), by which the respective modulation of the pressure field is variable.

31. Device according to at least one of the preceding claims, characterized in that the device is a, preferably with a battery (30) operated, hand-held device.

32. Apparatus according to at least one of the preceding claims, characterized by a Druckfelderzeugungseinnchtung (10) and the drive means (20, 22) containing the housing (2) having a first housing portion (2a) on which the application opening (8) formed to the at least partially placed on a first body part is provided, and a second housing portion (2b), which is designed for insertion into a second body part, wherein the first and second housing portions (2a, 2b) are oriented to each other, that the first housing portion (2a ) with the application opening (8) can be placed on the first body part, while the second housing portion (2b) is simultaneously inserted into the second body part.

33. Apparatus according to claim 32, characterized in that the drive device (20, 22) is formed, in addition to act on the second housing portion (2b) with a vibration.

34. Apparatus according to claim 32 or 33, characterized in that the first housing portion (2a) relative to the second housing portion (2b) is arranged at an angle such that the two housing sections (2a, 2b) are oriented approximately in the manner of a "V" to each other ,

35. Device according to at least one of claims 32 to 34, characterized in that the first housing section (2a) is movably connected to the second housing section (2b).

36. Device according to one of claims 32 to 35, characterized in that the second housing portion (2b) has an elongated shape with a rounded free end (2bb).

37. Device according to at least one of claims 32 to 36, characterized in that the housing (2) has a third housing portion (2c), which is arranged on the second housing portion (2b), and at the connecting portion (2d) between the second housing portion (2d) 2b) and the third housing portion (2c) of the first housing portion (2a) is arranged.

38. Device according to at least one of claims 32 to 37, characterized in that the third housing portion (2c) forms an extension of the second housing portion (2b).

39. Apparatus according to claim 38, characterized in that the third housing portion (2c) is substantially flush with the second housing portion (2b).

40. Apparatus according to claim 38 or 39, characterized in that the third housing portion (2c) forms a handle.