In particular, a bathtube able to overcome several problems related to the bathtw, hydromassage and medical treatment operated through the phisical action of the water and the delivery of medicaments and phytotherapic products. One of the drawbacks of the bathtubes of known type stems from the relative difficulty by the user to maintain his/her position immersed in the water. This drawback is particularly felt by ill or elderly persons.

A further drawback, typical of hydromassage tubes, derives from failure to have optimal interaction of the water jets with the user's body.

Still another drawback of the bathtubes relates to the relatively high consumption of water and energy.

The main object of the present invention is to overcome the said drawbacks.

This result has been achieved, according to the invention, by providing a bathtube having the features indicated in the independent claims.

Further characteristics being set forth in the dependent claims.

The advantages deriving from the present invention lie essentially in that it is possible to obtain a bathtube in which the user can sit immersed up to the neck and safely sustained, that it is possible to provide the user with an extremely effective hydromassage tailored to his/her requirements, that it is possible to drastically reduce the consumption of water and energy, that the tube in

question may provide an easy and safe access. These and other advantages and characteristics of the invention will be best understood by anyone skilled in the art from a reading of the following description in conjunction with the attached drawings given as a practical exemplification of the invention, but not to be considered in a limitative sense, wherein: -Fig. 1 relates to a feasible embodiment of a tube according to the invention in side view and cutaway parts to show other parts, and with a user schematically represented inside the tube; -Fig. 2 is a front view with cutaway parts of the example of Fig. 1; -Fig. 3 shows a top view of the example of Fig. 1; -Figs. 4 and 5 show respectively a side view and a front view of the example of Fig. 1; -Figs. 6 and 7 show respectively a further side view and a further front view of the example of Fig. 1; -Fig. 8 is a side view of the example of Fig. 4 in which the tube exhibits an open acccess door; in this figure some details depicted in Fig. 4 have been omitted for clarity of the drawing.

With reference to the non limiting example of the attached drawings, the tube (1) in question is of the type consisting of a container (10) provided with means for the admission of liquid and means for the discharge of liquid, respectively, into and out of the same container, the tube having a rest surface (5) defining a seat for the user. The tube in question allows a relaxing sitting attitude, a

filling with water up to the neck without having to bend the latter, and a support for the head in order to stretch and align the spinal column. To this end, the tube (1) is provided with height- adjustable support means (2) for the head of said user (3). The support means comprise an open, ring-shaped, doughnut-like body (29) made prefereably of soft material and intended to wind up at least partially the neck of the user so as to sustain his/her head and keep the spinal column in stretched attitude. This support is very important also from a psychological point of view in that it lends a"sense of safety"and, by enabling to keep the head off the water all the time, it brings along, contrary to the traditional tubes, no problem even in case of user's excessive relaxation or sleepiness.

The rest surface (5) has a substantially wavy profile, defined by a plurality of cavities (55).

The means for the admission of liquid comprise a plurality of nozzles (6,6') disposed in correspondence of at least a portion of the above cavities (55). Moreover, the means for the admission of liquid consist at least in part of nozzles (6') located in correspondence of the inner faces (11) of side walls of said container, at regions which result above and sideway of the body of the user (3) inside the tube. These nozzles (6') also provide, during the tube's filling and emptying stages, for directing gentle water cascades onto the body of the user (3), in order to determine in advance and maintain a body's proper

temperature upopn said stages and to complete the bath or treatment cycle with hydrojets also in the form of shower. The user's posture, and the utilization of water jets delivered from nozzles located in the cavities of the waves and on the vertical walls, make it possible to have a sit shower and to avoid filling the tube.

The nozzles (6,6') result disposed at different levels and are orientable; also provided are liquid-admitting means (66) (such as pumps shown in the drawings) able to differentiate the flowrate and/or the pressure at the output of the nozzles (6,6') according to the relevant level, that is, according to a region of the body of the user (3) with which the same nozzles are to interact.

In particular, in the region (50) of the surface (5) for the rest of the back, the nozzles (6) are disposed in two rows decreasingly spaced apart from top downards, so as to result on two sides with respect to the spinal column of the user resting on said surface: the nozzles being spaced apart in correspondence of the shoulders and close to each other at the level of the loins so as not to interfere with the latter. The flow for the hydromassage is controlled through a switchboard (shown schematically with 89 in Fig.-4) which allows a higher pressure at the feet level and a progressively lower pressure to obtain an upward massage and stimulating water circulation according to the hydrostatic pressure in the tube. A section of the same switchboard controls the flow of medicaments or phytotherapic products to be

injected along with the hydrojets, so as to have them entrained in atomized form by the vortex of water and air of the hydromassage. The medicinal products are gathered inside different container (8) and their dosage, unless already preset in the used product, may be programmed through the mixing of the various elements held separately within the individual containers.

The liquid-admitting means comprise a rotary device (68) located in the region of the tube's bottom and provided with nozzles intended to interact with the region of the ankles of the user (3). The device (68) is able to rotate thanks and prefereably to the sole intervention of the force of the water which exits from the nozzles provided on the device and disposed in such a way to actually determine a rotation of the device (68) when they are crossed by the water. The emptying of the tube is performed via a discharge channel provided with inlets and aided by pumps to speed up the operation as far as possible.

Also provided inside the tube is a support body (19) able to enagage the container (10) and to be disposed, once the tube is filled, in correspondence of a region with greater depth and exhibiting means (18) providing a hold and/or rest for the user (3). The body (19) may be hinged to the tube or, if floating, anchored at the bottom of the same tube. The body (19)-which may be made of soft material, of various shapes and colors, with handles and recesses allowing a hold and rest for the hands and the arms-is provided for giving

comfort and relief as well as reducing the amount of water necessary for emptying the tube (1).

The container (10) of the tube (1) is provided with a tight-seal door (9) able to provide an easier acces to the same container (10). The door (9) is engaged to the container via one or more vertical hings (99) which allow it to be rotated about the pivot axis (z) and vertically displaced therealong.

A display (16) may be provided located in front of the user and able to visualize and control all the stages, parameters and the treatment development.

Practically, all the construction details may vary in any equivalent way as far as the shape, dimensions, elements disposition, nature of the used materials are concerned, without nevertheless departing from the scope of the adopted solution idea and, thereby, remaining within the limits of the protection granted to the present patent for industrial invention.