Patent Application
20120137441
This invention relates to a postural system.
In particular the postural system according to the invention may be used by non-ambulant or partly-ambulant persons and is designed to be fitted on or be an integral part of medical support devices for mobility, such as manual and/or electronic carriages, medical devices for rehabilitation and social or domestic life, such as bases with or without wheels for institutional and/or school use.
However, the postural system according to the invention may advantageously also be used by people who are able to walk properly in combination with chairs, seats, benches and similar articles—as a separate and removable article or as an integral part thereof—to ensure correct posture in the sitting position. In particular it may also be advantageously used in transport means.
The sitting position is influenced by many factors, the first among which is the force of gravity. Other factors are to be found in the kinetic and kinematic system of the human body, and in the sensory and perceptive system which define posture as a dynamic and non-static posture.
In individuals who are capable of maintaining a sitting position by themselves self-control mechanisms which depend on the interaction of three sensory systems (perceptive system, processing system and actuator system) are involved and make it possible to react to external stimuli, even if the reaction may not always be perfectly correct and timely. The problem of maintaining correct posture arises even more keenly in the case of persons who are affected by diseases deriving from damage to the central nervous system, whether genetic or acquired, in that in these cases the self-control mechanisms are not always able to act.
Some diseases deriving from damage to the central nervous system also result in changes in body structure, such as for example asymmetry of the pelvis in the frontal, sagittal and transverse planes, which in turn give rise to asymmetries in the lower limbs and/or deformity of the spine, and consequently give rise to limitations in basic body functions such as respiration, swallowing, communication, and so on.
In persons affected by diseases of this type a correct sitting position can only be achieved through external support systems which contain different segments of the body.
In particular, from the biomechanical point of view the part of the body which is of primary interest for a balanced and functional sitting position is the pelvis. It is known from scientific studies that the orientation of the sacrum in space and the angle of the pelvis determine the load on the entire spine, and therefore between the intervertebral discs, causing problems to arise in the spine.
It is therefore essential that postural systems for persons affected by diseases of this kind ensure correct support and containment for the pelvis.
It is obvious that in order to obtain the said correct support and containment for the pelvis it is necessary to bear in mind the particular morphology of individual persons, in particular the special morphology of their pelvises.
For example, from an anatomical point of view, there are structural and dimensional differences in the pelvis between men and women, which although small in infancy become significant after the tenth year of age. More generally it is desirable that a postural system that is suitably shaped and sized on the basis of their specific anatomical conformation can be provided for individuals.
However, the construction of bespoke postural systems deliberately designed for individuals is impractical in that this would require a complex and costly production process, which would result in virtually inaccessible prices for the final product.
It must also be borne in mind that a person's morphology is not fixed and unchanging, but can undergo major changes, particularly during the age of growth, but also subsequently thereto.
Thus even a bespoke postural system would not be able to ensure correct support and containment of an individual's pelvis over the course of time. Modular systems which include accessories together with a basic postural system which can be removably associated with the aforesaid basic postural system so as to partly modify its shape are known from the state of the art.
Examples of such known postural systems can be found for example in documents U.S. Pat. No. 5,333,921 and WO 95/03396.
However, in postural systems of the type described in the above-mentioned documents the basic postural system has already in itself its own conformation shaped on the basis of a predetermined and unmodifiable model and removable accessories can only superficially change that shaped conformation.
As a consequence these known devices are unable to remedy the technical problem mentioned above, in that they cannot conform and dimension the postural system on the basis of the specific anatomical conformation of individuals.
Document GB 2,102,283 describes a support for physical and rehabilitation exercises, in particular for disabled children, this support having a modular structure.
However the modularity of the support described is designed not so much to adapt to users with different morphological characteristics, but for the performance of different types of physical and rehabilitation exercises. Thus the descriptive support does not resolve the technical problem of ensuring correct support and containment of the user's pelvis. In addition to this, although it has a modular structure, this support does not adopt a sufficient variety of sizes and conformations to adapt to the anatomical conformation of all individuals.
The object of this invention is therefore to overcome the disadvantages of the prior art, providing a postural system that can provide the user with correct support and can be personalised according to the user's morphological characteristics.
Another object of this invention is to provide a postural system which can be easily modified to adjust to the morphological variations which can occur in users over the course of time.
Another object of this invention is that of providing a postural system which can be produced through a simple and economical manufacturing process so that a final product can be supplied at competitive prices.
This and other objects of this invention will be accomplished through a postural system as claimed in the appended claims.
Because of the fact that the postural system according to the invention is of a wholly modular nature and provides a supporting structure comprising a flat base plate, preferably made of damping and anti-vibration material, and a plurality of shaped blocks, it is possible to achieve perfect adaptation to the user's shape and encourage perfect housing of the body and correct weight distribution over the entire surface area of the seat.
In particular, the base supporting the user's body is already itself of a modular structure, which can be modified according to requirements, in particular according to the user's shape.
In particular, the said blocks can be shaped through cutting, removal of material, pressing or similar processing. They are also provided with means for being removably and reversibly coupled to the said base plate and to one another.
Advantageously, according to the invention, the number, shape and arrangement of the said shaped blocks may be selected in such a way as to conform perfectly to the user's structural shape.
Again according to the invention, the number, shape and arrangement of the said shaped blocks can be easily modified in relation to changes which may affect the user's shape with the passage of time.
According to requirements, the supporting structure of the postural system according to the invention may permit the pelvis (at all lateral and posterior support points), the coccyx, the sacrum, the lumbar vertebrae, the thoracic vertebrae and the remainder of the user's spine to be correctly accommodated.
According to a preferred embodiment of the invention, the modular postural system provides a supporting structure comprising:
The postural system according to the invention also comprises a padding system capable of being placed on top of the abovementioned supporting structure.
Advantageously, according to the invention, the said padding system is also modular and comprises a plurality of variably combinable padded cushions.
The postural system according to the invention may also comprise accessory devices such as for example a device for accommodating and supporting the user's shoulders and head, the said accessory devices preferably in turn having a modular structure.
Advantageously, the postural system according to the invention may be provided in kit form comprising the aforesaid base plate and a large number of modular blocks of different shapes and sizes, in such a way that the blocks having the most appropriate shape and size in relation to the user's conformation and requirements can be selected and the blocks so selected can be assembled onto the said base plate.
Further advantages and characteristics of this invention will be apparent from the following detailed description of some preferred embodiments of the invention provided by way of non-limiting examples with reference to the appended drawings in which:
Figures from 1a to 1d show successive configurations of the modular construction of the supporting structure of the postural system according to a first embodiment of the invention;
Figures from 1a to 1d show successive configurations of the modular construction of a postural system according to the invention.
In general the said postural system provides a supporting structure having a modular structure and comprising a base plate and a plurality of shaped blocks through which the body can be perfectly accommodated with a correct weight distribution over the entire surface of the seat.
a illustrates the base plate 10 for the said postural system.
Said base plate 10 is a flat plate and can be manufactured from plastics, metal or composite material. During the stage of delivery to the final user the said plate may be easily modified, for example by cutting, in order to achieve the desired shape and size.
Said base plate 10 has a bottom surface provided with coupling means which can be used for coupling to a carriage having a base with or without wheels for institutional and/or school use or with a plate suitably designed to permit the coupling of possible accessories.
The said base plate also has a top surface provided with coupling means 12 for coupling to the said modular blocks.
Said coupling means 12 may for example comprise coupling systems with binder blocking systems and/or male and/or female fastener tapes. In
Said modular base 20 has the function of preventing slipping of the hips, which also may be asymmetrical, and maintaining equilibrium of the legs/pelvis relationship system.
Modular blocks 20a-20f are made of plastics or composite material, are pre-shaped and can be adapted through cutting, removal of material or other similar processing.
Each of said modular blocks 20a-20f are provided on their bottom surfaces with coupling means for coupling to flat base plate 10. Each of these is also provided with coupling means 22 on its top surface for coupling to a further plurality of shaped blocks which are used to position and guide the legs individually, and will be described below.
Said coupling means 22 may for example comprise coupling systems with binder blocking systems and/or male and/or female fastener tapes. In the construction of modular base 20 the said modular blocks are placed in two rows, on the left and right respectively of base plate 10.
If the postural system is intended for a user having legs of different length, each of the said rows can be dimensioned according to the length of the corresponding leg by removing one or more of said blocks 20a-20f on either side, and then subsequently cutting base plate 10.
If the postural system is intended for a user having a pelvis which is rotated to the right or left in the frontal plane, each of the said rows may be positioned along the length of base plate 10 at different levels so that each of the two rows of blocks 20a-20f can provide an obstacle against slipping of the hips in a differential way.
If the postural system is intended for a user having bowed and/or dislocated legs, each of the said rows can be fixed to base plate 10 in an off-centre and/or oblique way with respect to the supporting plane thereof.
If the postural system is intended for a user with outwardly rotated legs, each of the said rows may be fixed to base plate 10 in a divaricated way with respect to the longitudinal median line of the base plate.
It is obvious that from what has been described above that modular base 20 may adopt different configurations to match the shape characteristics of the user and that these configurations may be modified in the course of use in relation to changes in the structure of the user's shape or other needs.
It is also obvious by merely using a modular structure of the type described above for modular base 20 the invention makes it possible to overcome the problems in the prior art and to accomplish the objects specified above.
In a variant of the embodiment illustrated, each of the two rows of modular blocks 20a-20f may be provided with a lower matchingly-shaped member, also having a modular structure, which will encourage anterior-posterior equilibrium of the pelvis.
In
Modular blocks 30a-30d are manufactured from plastics or composite material, are pre-shaped and can be adapted through cutting, removal of material or other similar processing.
Each of said modular blocks 30a-30d is provided with coupling means on its bottom surface for coupling to module base 20.
Said coupling means may for example comprise coupling systems using binder blocking systems and/or male and/or female fastener tapes.
Said blocks 30a-30d may be provided with wedges which are useful for increasing their thickness according to the user's dimensional needs, the said wedges being provided with coupling means on their top and bottom surfaces to permit coupling to modular base 20 and modular blocks 30a-30d for accommodating the legs respectively.
It is obvious that the modular nature of modular blocks 30a-30d, and of the corresponding wedges if provided, together with use of modular base 20, allows for the entire system for accommodation of the legs to be constructed in an extremely personalised and if necessary asymmetrical way.
In particular, according to the invention, the central abductor block which is used to keep the user's legs apart may comprise separate modular blocks 30b, 30c. By suitably selecting the shape and size of abductor blocks 30b, 30c it is possible to achieve the conformation which is most appropriate to the user's shape, even if asymmetrical, which is not possible with postural systems of the known type.
In
The said accommodation system may also be regarded as comprising a combination of containment, suspension and lateral and posterior control subsystems for the pelvis, and for the functional vertebral segments in the position of the same.
Modular blocks 40a-40f are made of plastics or composite material, are pre-shaped and may be adapted through cutting, removal of material or other similar processing.
Each of said modular blocks 40a-40f is provided with coupling means on its top and/or bottom surface for coupling to the posterior surface of flat base plate 10.
The said coupling means may for example comprise coupling systems having binder blocking systems and/or male and/or female fastener tapes.
As a result of the modular structure of pelvis accommodation system 40, achieved through independently coupling each of modular blocks 40a-40f, it is possible to achieve correct containment, suspension and anterior, lateral and posterior control of the user's pelvis, regardless of its morphological structure, and to adjust that containment to changes in body structure which might occur in the course of use.
The said pelvis accommodation system 40 also makes it possible to contain, support and control the functional vertebral segments directly influenced by the position of the pelvis, such as the coccyx, sacral vertebrae, lumbar vertebrae and thoracic vertebrae, thus achieving total support of the pelvic area (so-called “PTS—Pelvic Total Support”).
Each of the aforesaid modular blocks 40a-40f may have different size, shape and arrangements depending upon the user's morphological structure, and may be fitted with useful accessories to alter their thickness, inclination or orientation, the said accessories being provided along the top and bottom surfaces with coupling means for respective coupling to flat base plate 10 and modular blocks 40a-40f.
In this respect
According to the embodiment in
Flat base back member 52 may be constructed in the same way as base plate 10.
Modular blocks 50a-50e are made of plastics or composite material, are pre-shaped and can be adjusted through cutting, removal of material or other similar processing.
Each of modular blocks 50a-50e is provided with coupling means along the bottom surface to allow coupling along the lining of the supporting structure of the postural system and/or the flat base plate 10 of the said supporting structure.
The said coupling means may for example comprise coupling systems with binder blocking systems and/or male and/or female fastener tapes. The construction of the modular system 50 for accommodation of the spine using modular blocks 50a-50e makes it possible to achieve correct containment and anterior, lateral and posterior control of the user's trunk through independent coupling of each of the said blocks at different times according to the user's structural shape and correct accommodation of the spine and correlated segments and joints.
Each of modular blocks 50a-50e may be suitably designed with different sizes, shapes, heights and functions. In addition to this, each of the aforesaid blocks 50a-50e may be provided with accessories in order to alter their thickness, inclination or orientation according to the user's needs, the said accessories being provided with coupling means along their top and bottom surfaces for coupling respectively to the lining of the supporting structure or base plate 10 and modular blocks 50a-50e.
Said system 40 for accommodation of the spine also makes it possible to contain, support and control the lumbar and thoracic vertebrae and the remaining part of the spine, together with its correlated segments and joints, thus achieving total support of the trunk area (so-called “TTS—Trunk Total Support”).
Said padding system 60 is in turn of a modular structure (a so-called “Forme Libere” structure) and comprises a plurality of padded cushions 60a-60d of a type, shape and thickness which may be the same or different, suitably combined according to the load which each body segment has to support and the stresses to which it is subjected during use.
In particular modular padding system 60 comprises separate sub-systems, of which:
Each padded cushion 60a-60d may be made using different types and combinations of high-performance polymer foam, cross-linked foam to encourage ventilation, visco-elastic foam with a slow memory return and the like, or even using alternative materials to polymer foam that are nevertheless suitable for the present application.
Padded cushions 60a-60d may be joined together by means of water-based adhesives which do not adversely affect the characteristics and properties of the foam used or may also not be joined together, but simply juxtaposed. In fact the particular design of cut and choice of thicknesses makes it possible to adapt the padding system perfectly to the shape of the underlying supporting structure through the mere effect of body pressure exerted by the user during use.
The supporting structure of the postural system padded in this way is covered with a lining which permits accommodation to the postural configuration found.
Similarly
Said padding system 70 in turn has a modular structure and comprises a plurality of sub-systems 70a-70b, each comprising padded cushions of the same or different type, shape and thickness, suitably combined according to the load which each body segment has to support and the stresses imposed upon it during use.
In particular a first sub-system 70a corresponding to the back of the postural system and a second sub-system 70b corresponding to the supporting structure thereof may be seen in
Said first sub-system 70a together with the underlying plurality of modular blocks 50a-50e for accommodation of the user's spine and a corresponding form of lining constitutes a kit (a so-called “Forme Accolte” kit).
Here again the supporting structure of the postural system padded in this way is covered with a lining cover which enables it to adjust to the postural configuration found.
The supporting structure of the postural system according to the invention may be provided with a great variety of accessories used individually or in combination according the user's specific requirements. By way of example
Said modular system 80 comprises modular blocks 80a-80b made of plastics or composite material, pre-shaped and adjustable through cutting, removal of material or other similar processing.
Each of modular blocks 80a-80b may be provided with coupling means 82 along the top and bottom surface to permit coupling to the supporting structure of the postural system.
Said coupling means 82 may for example comprise coupling systems using binder blocking systems and/or male and/or female fastener tapes. Said modular system 80 positioned posteriorly to the supporting structure of the postural system makes it possible to provide complete postural support for the user and allow stable supporting positioning along the backs of different sitting and/or transfer devices such as seats, buggies, high chairs for medical or domestic use and so on.
In general, in accordance with the invention, it will be possible to provide a kit comprising the said base plate 10, one or more pluralities of the said modular blocks 20a-20f, 30a-30d, 40a-40f, 50a-50e, 80a-80b, and one or more pluralities of the said padded cushions 60a-60d, 70a-70b, so that the postural system can be constructed by suitably associating the said modular blocks and the said padded cushions to the said base plate according to the user's requirements, selecting the number, shape, size and orientation of the said blocks and said cushions according to the patient's structural shape.
It is obvious from what has been described above that the postural system according to the invention makes it possible to accomplish the objects specified above in that it makes it possible to allow for the user's specific shape in order to encourage perfect accommodation of the body and proper weight distribution and also makes it possible to adjust its structure to changes in the said shape which may occur in the course of use.
It is also obvious that the embodiments described above have been provided purely by way of example and that many modifications and variants are possible without departing from the scope of protection of the invention as defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| TO2010A000442 | May 2010 | IT | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/IB2011/052282 | 5/25/2011 | WO | 00 | 2/3/2012 |
