FR2689759A1 - Medical seat with removable mobile support. - Google Patents

Abstract

Medical seat comprising a seat (14) an articulated back (12) relative to this seat, characterized in that it comprises at least one thigh support (44) provided with articulation means with respect to the seat and arranged at the front of this seat. The invention also relates to the mobile support associated with the medical seat.

Description

The subject of the present invention is a mete seat

dical with removable mobile support.

  People with motor disabilities, especially children, must stay in a medical seat for very long periods. It is therefore necessary that these seats are perfectly suited to the person's morphology and that they offer optimum comfort in addition to

necessary maintenance qualities.

  There are already armchairs that include a frame, on which is attached a more

  generally molded and well suited to the morpho-

  user logic by the mime principle of

the achievement.

  It is this type of product that presents current-

  provides the best comfort and gives the best results. However, it has several drawbacks, the first being the own production of the hull which requires "fittings" and delays without taking into account the necessarily high cost price. We also understand that such a hull must be regularly changed especially

  for children as the varia-

size and / or weight.

  This type of shell seat also has another disadvantage which is that of not allowing

no setting.

  It is therefore designed for an optimum result, but in a restricted range of positions. In certain embodiments, provision is made for

  wedging cushions but besides the fact that it

  git of reported items, they don't give its-

  satisfaction because it is necessary to change these regularly

  cushions that do not follow the mor-

of the person.

  Another solution consists in preparing a given range of shells according to the sizes but the adaptation to the morphology remains in this case.

  very rough and the shell seat loses its

  sential qualities previously indicated due

molding.

  The prior art proposes numerous armchairs

  wheelchairs for the disabled but this type of wheelchair

  armchairs is rarely suitable for children.

  On the other hand, the wheels and the whole chassis

  are fixed to the seat which prevents any trans-

  fert of the child seat assembly in a vehicle or on a specific support for the duration of the

meals for example.

  On the other hand, certain lateral support devices such as that described in the patent

  French N 2 190 013 present a certain in-

  tér And since they allow a vertical adjustment

  horizontally and angularly thanks to

  two double cross slits with lateral supports.

  Likewise, there is provision in this patent for a lumbar support adjustable in depth and in height.

  which improves the comfort of the wheelchair

  crit. There are also commercially available seats provided in the middle of the seat with a fixed separator adjustable in length Thus

  the user in the seated position is in abduct

  thanks to this separator, which is nothing but a wedge, which keeps the legs slightly

  separated and which avoids displacement towards the a-

  front of the person's pelvis, displacement which in the absence of a separator, can lead to

fall out of the seat.

  We also know that people with disabilities

  swords may exhibit asymmetries morpho-

  logical both in the length of the legs as in their size or even deformations at

hip or pelvis level.

  Likewise in the case of significant loss of motor skills.

  Aunt it is advisable to keep the person on all parts of the body and to control the

  possible sudden and uncoordinated movements.

  It is also necessary to provide a seat and a removable mobile support which itself can be folded

  so that the whole can be easily trans-

  worn, especially in a class vehicle

  if that. The qualities of stability, rigidity of the frame and suspension must obviously be improved in order to achieve an optimum degree of comfort. The materials used for the manufacture of such a seat must imperatively be adapted to the conditions listed above. It is therefore necessary a light material, easily transformable by

  folding, gluing, welding and machinable.

  It should also be possible to have colored materials in the mass in order to give the seat thus produced a pleasant aesthetic appearance and to partially compensate for the c 8 tee

medical function of this seat.

  To this end, the present invention provides a medical seat, in particular for the physically handicapped, which has precise settings for all of the elements for supporting the body, including

  S asymmetrically, which thanks to its adaptability

  only a small number of models are required

  to constitute a complete range, which is

  ger, functional and aesthetic, which can be removably mounted on a mobile support also included in this application for

  patent, which can receive numerous accessories

  res as needed, which is perfect-

  ment stable while having a certain degree of flexibility, whose manufacture is easy and whose assembly can be done at the places of use or sale which facilitates transport. For this purpose, the medical seat according to the invention, in particular for the physically handicapped, includes a seat, a file articulated with respect to this seat, and is characterized in that it comprises two substantially parallel thigh supports each composed of a flap hori 2 ontal and a vertical separator each provided with articulation means respectively with respect to the seat and the separator, so as to adjust the flap in height and in length with respect to

  the seat and the divider in length and angle

in relation to the shutter.

  The articulation means each comprise a first axis cooperating with a bore in the movable part flap or separator and an oblong hole in the seat support part or flap, and a second axis cooperating with two crossed oblong holes, one formed in the moving part shutter

  or separator and the other in the support part.

  According to another characteristic of the invention, the thigh supports are supplemented by

  lateral holding means articulated with respect to

  supported by the seat as well as by two independent axillary supports, also provided with means of height, width and height adjustment

angle in the back plane.

  The seat according to the invention also comprises a lumbar support provided with protruding adjustment means as well as an also adjustable headrest

  and designed to receive accessories.

  The backrest comprises, according to a particular embodiment, means for adjusting the inclination with notches formed in the seat and provided with

means of recall.

  As for the mobile support associated with this seat, it comprises a chassis, comprising two front arms, provided at one of their ends with a steerable wheel, a central plate provided for receiving the seat base, said plate being

  mounted on a shock absorber whose body is so-

  integral of the two arms on the one hand and integral with its lower part of a rear axle on the other hand, this axle carrying a wheel at each of its ends, the assembly being completed by two struts interposed between the arms

and the rear axle.

  According to another characteristic of the invention, the mobile support comprises a thrust arm adjustable in inclination in the vertical plane and provided with removable connection means with the chassis. The invention is described below according to a particular embodiment with reference to the appended figures in which: FIG. 1 represents a perspective view of a seat according to the invention,

  Figure 2 shows an exploded view of

  tail of the seat, FIG. 3 represents a perspective view of a thigh support mounted on the seat,

  Figure 4 shows an exploded view of

  tail of the backrest, FIG. 5 represents a variant view of the separator, and FIG. 6 represents a perspective view

  of the mobile support according to the invention.

  In Figure 1 there is shown a seat according

  the invention which comprises a seat 10, a back-

  sier 12 articulated with respect to the seat so as to allow its inclination and the mobile support

removable 13 at the bottom.

  As shown in Figure 2,

  the seat includes a base 14, with a section

  as much as an inverted U, and provided with two pairs of lateral lights 16 and 17 formed on the wings 18 of the U in the immediate vicinity of the base 20. On the other hand, this base includes holes 22 intended to receive fixing rivets

  a stiffener 24 provided with holes 25, dry-

  tion also in inverted U, and comprising also

  two pairs of lights 26 and 27 coincide

  dant with lights 16 and 17 of the base.

  The base also includes a pair of oblong holes 21 oriented longitudinally as well as two pairs of holes 23.

  The seat also includes a pair of

  reilles 28, interconnected by a plate

  link 30 having bores 32 coinciding

  dant with those of the stiffener and the base.

  These ears also include holes

oblong 34 oriented vertically.

  The right and left wings 36 of the stiffener 24 are approximately one third and two

  third of the width between the wings of the

based.

  They each have two holes on the front

  oblong 38 and 40 respectively vertical and ho-

  rice and on the back an oblong hole 42 ho-

rice and notched.

  The stiffener further includes two holes

  oblong 43 oriented longitudinally and super

  posable with the holes 23 of the base.

  The seat is completed by cooking supports.

  se 44, comprising a flap 46 curved downwards on its front part 48 and provided with two crossed oblong holes 50 and 52 oriented respectively

  transversely and longitudinally.

  The partial tearing of the drawing of this piece

  shows a link tab 54 soli-

  of the curved front part of the shutter and

  bre on its back This thigh support

is shown in Figure 3.

  a In addition, there is a screw / nut assembly 59 at the rear of the flap which includes a spring 57 of

  plating interposed between the nut and the flap.

  This tab includes an oblong hole 56 on its front part oriented along the longitudinal axis of the tab and a hole 58 at its rear end. The seat also consists of a separator

  , L-shaped section The horizontal wing 62

  takes an oblong hole 64 on its front part oriented longitudinally and a bore 66 on its rear part As for the vertical wing it has a progressive height passing from h to the rear

to H forward.

  The lateral holding means 68 include a

  L-section plate horizontal wing 70 com-

  taking two oblong lights 72 and 74 trans-

adjustment versals.

  In Figure 4 there is shown the folder 12 which is composed of a vertical plate with U-section with two right lateral extensions and

  left folded 15 forming stiffener.

  On the wings of the U there are provided two slots 76, oriented longitudinally as well as two pairs of oblong holes 80 also oriented

  longitudinally, to the right of the lights.

  At its upper part, the backrest includes two holes 84 and at its lower part two holes

  oblong 86 oriented longitudinally.

  In addition, the wings each have two holes 88, 90 respectively provided to cooperate with an axis of rotation and to receive means

of fixation.

  At the lower part of the backrest, there are two legs 92 parallel to the wings of the U, also provided with two holes 94, 96 respectively provided for receiving an axis of rotation and fixing means. The lower ends of the two legs are connected by a rod 98 provided with return means 100 in the form of a helical spring

  102 connected to the seat as will be explained

than later.

  Axillary supports 104 are provided to be also mounted on the back. These axillary supports comprise a plate 105 with a substantially L-shaped profile, the horizontal part

  106 of the L being provided with two oblong holes 108.

  As for the vertical part 110 of the L, it has a

  slightly curved profile as is

shown in this figure 3.

  A lumbar support 112 is also provided to be mounted on this backrest. It includes a

  slightly curved plate 114 fitted with solid rods

116 fixing lugs.

  The headrest 118 comprises a plate 120 provided

  of a central part 122 curve The parts la-

  124 of this headrest have two oblong holes 126 oriented longitudinally as well as two holes 127 An accessory of this headrest 118 is also shown in this figure 3 It consists of a hoop 130 in

semicircle with holes 132.

  The assembly of the entire seat is described below.

  after. The base 14 receives at its lower part the stiffener 24 The wings 18 and 36 respectively

  of the base and the stiffener being parallel.

  The base 14 and the stiffener 24 thus positioned receive through the lights 17 and 27 the

  ears 28 integral with the plate 30.

  All three elements are then fixed

by riveting.

  The thigh supports 44 are positioned at the front of this new assembly constituting the seat so that the flap 46 is parallel

  in terms of the seat For each support a

  seems bolt / nut passes through the hole 58 of the connecting lug 54 and slides in the oblong hole 40 of the corresponding wing 36 of the stiffener. Furthermore, a second bolt / nut assembly is mounted through the oblong hole 56 of this same tab and slides in the oblong hole 38 of

  the corresponding wing 36 of the stiffener.

  The flap 46 of the thigh support 44 is thus

  fixed at two points with adjustable adjustment

  port in the assisi It is the same for the se-

cond thigh support.

  The spring 57 interposed between the underside of the stiffener and the nut of the bolt-nut assembly 59 ensures the plating of the rear part

  of the shutter on the upper face of the base.

  The right and left dividers are mounted on each side.

  one on the corresponding thigh support.

  thanks to two bolt-nut sets passing through

  pectively through the bore 66 of the horizontal wing of the separator 62 and through the the oblong hole 52 of the flap 46 and through the oblong holes 64 of the separator and 50 of the flap,

  oriented in crossed directions.

  The lateral holding means 68 are intro-

  duits through lights 16 and 26 of the em-

base and stiffener.

  The backrest is assembled as follows. The legs 92 are fixed to the right and left wings of the backrest by riveting in the holes 90

of these wings.

  The legs 92 are introduced through the slots 27 and 17 of the stiffener and the base

  to protrude above the seat, par-

in the ears 28.

  Rod 98 is fixed in the corresponding holes

  laying legs, this rod passing through the notched lights 42 of the wings 36 of the stiffener.

  An axis of rotation, not shown, is introduced

  duit through the holes 94 of the legs and 88 of the wings of the backrest and through the oblong holes

34 of the ears 28.

  The return means 100, comprising the spring

  102, already fixed on the rod 98 by an end

  are connected to a hooking point on the rack.

  straightener, not shown for the clarity of the

  sin. The under axillary supports 104 can be placed

  in place on the file by introducing the

  horizontal tie 106 in a vertical position

  through the backrest lights 76.

  Screw / nut assemblies pass through the oblong holes 108 of these sub axillary supports

  and through the oblong holes 80 of the backrest.

  The headrest 118 is assembled using two screw-nut assemblies passing through the holes 84 in the backrest and the oblong holes 126

  formed in the wings 124 of this title.

  The accessory 128 is assembled in

  using two sets of screw / nut by making them

  sant pass through the holes 132 of the access-

evening and 127 of the headrest.

  The last element of the backrest, namely the lumbar support 112, is mounted in a similar manner by positioning the threaded rods 116 through

  the oblong holes 86 in the backrest

  ment provide ecru accessible from the rear

  of the backrest A high stiffness spring is in-

  superimposed between the support and the backrest in the manner

a shock absorber.

  The seat thus mounted can be used in a de-

below.

  The person sits in the seat and corrects

  positioned according to his handicap.

  Then the necessary adjustments are made.

  sés manually, the inclination of the thigh supports is done by playing the flaps 46 by sliding the screw / nut assemblies through the lights 40 and the crossed lights

38 and 56.

  Thus, each right and left thigh support can be adjusted independently in length and inclination. The upward tilt of this flap prevents slipping of the lower part of the body

forward.

  The length is adjusted so that the entire thigh bears on the flap, which decreases

  the contact pressure since the contact surface

  tact is increased On the other hand, this length adjustment compensates for an inequality of the

femoral segment.

  In addition, this inclination allows the femoral segment to flex on the trunk, which leads to the closure of the pelvis-femur angle, in order to avoid

the diagram in extension.

  In turn, the two right and left separators

  che integral with the flap are adjusted in length and angularly so as to give the two

legs at a given opening angle.

  Then simply bring the lateral holding means 68 right and left of each

corresponding legs.

  The different inclinations and the orientation of these lateral holding means makes it possible to put

  a thigh in abduction of the femoral segment.

  The backrest is adjusted in inclination relative to the seat by pressing from top to bottom and along the longitudinal axis of the backrest, which has

  the effect of canceling the effort to recall the

  goes out and unlock the rod 98 of the notches 42.

  The backrest, still pressing, can therefore

  vote around the axis passing through the

  ears 34 and holes 88 in the backrest.

  As soon as the pressure is released, the rod 98 is housed in one of the notches of the notched hole 42 Under the spring return effect the backrest is

  maintained in the position thus defined.

  The lumbar support 112 is adjusted

  from the back of the backrest, using a nut,

* be nut and spring. The adjustment of the supports under axillary 104, right and left, is carried out easily in width, in height and in orientation around an axis

perpendicular to the plane of the backrest.

  This adjustment is obtained thanks to the four holes

  oblong cross of armpit and back support-

  sier. In the same way we proceed to the adjustment of the t 9 tière and the installation or the withdrawal of

accessory 126.

  The adjustment and adaptation possibilities of this seat are very important anywhere in the body.

  Thus, 2 to 4 models are sufficient to cover the

  evolution from child to adult both in size

that in weight.

  The material used is plastic

  sold under the name ABS in one embodiment

  preferred invention, which leads to a light structure. Certain parts, such as

  that the stiffener in particular can be made

aluminum seats.

  On the other hand, the profiles are obtained by

  hot forming of cut plates which gives the different elements, flap, underarm support, headrest, a certain elasticity and rounded angles which go in the direction of safety. In FIG. 5, the variant of separator 148

  shown includes a vertical axis 150 displaced

  cable between the thigh supports in an additional slot 152 and 154 made in the base 14 and the stiffener 24 (The representation

  tion is a broken line in Figure 2).

  The separators 60 are deleted as well as the

oblong holes 52 and 50.

  The separator variant 148 includes two plates

  ques 149 orientable mounted for rotation around

  of the axis by one of their ends.

  The axial tightening of the axis with the nut 156 allows the plates to be locked in orientation and

  the axis proper in translation.

  In Figure 6, there is shown a mo-

  bile intended to cooperate in particular with the seat

described above.

  This mobile support comprises two front arms 210, each provided at one of their ends 212 with

  214 steerable wheels while their other ex-

  end 216 is fixed to a plate 218.

  These two arms make an angle gave order

  from 600 at the start of stage 218.

  This plate receives a sheath 220, arranged substantially vertically, sheath which is rotatably mounted about the axis 217 relative to the plate 218 at its upper end and which receives at its lower end a tab 222 provided with a screw 224 intended for cooperate with a rear axle 226 at the ends of which are

rotatably mounted on wheels 228.

  This rear axle 226 comprises two struts 230, each welded in the immediate vicinity of one of the ends of the axle, while the other end of these struts 230 is mounted for rotation about axes 232 with respect to

to the corresponding arm 210.

  Inside the sheath 220, a jack 234 is provided, the body 236 of which is secured to the sheath while the piston 238 is secured to a base 240 provided for receiving the seat.

  through engagement slots 242.

  These slots 242 are formed in the wings 244 of the base 240 whose section is U-shaped. At the bottom of the base 240, it is

  provided with 246 flanges fitted with curved holes

  genes 248 designed to receive legs 250 to

  the end of which are provided

  foot 252, articulated with respect to this same

leg around an axis 254.

  At the rear of the plate 218 it is

  provided a push arm 256 at the end of the

  which are mounted handles 258 fixed on a bar 260 perpendicular to the push arm 256. At the connecting end 262 of the push arm 256 with the plate 218, there is provided a removable fixing system which cooperates with notches

  264 formed at the rear part of said plate

  so that the arm can be adjusted an-

  regularly in the vertical plane or removed entirely.

  The functioning of the mobile support according to the

vention is now described.

  The medical seat is fixed to the base 240, by having two connecting bars integral for example with the stiffener 24 and the base 14 in the slots 242, these bars being transverse and having a spacing corresponding to that of

positioning slots 242.

  Locking means can be usefully provided in the form of a clipping pivoting lever or quarter-turn screws, not shown for clarity of design, but within the reach of ordinary skill in the art and known in the art technical

medical seats.

  The user can therefore move the mo-

  bile like a stroller since the front wheels are steerable which allows the

  steer, and the rear wheels being fixed assu-

  a large part of the resumption of the char-

  ge. It is found that the stability of the assembly is preserved by the spacing of the front arms and the transfer of the relatively close center of gravity

of the ground.

  The pushing arm 256 is also adjustable which allows the attendant to position the transverse bar 260 as desired and by

even the handles 258.

  It is also found in use that this type of mobile support is excessively handy since the thrust arm constitutes an important lever with respect to the distance separating the center of gravity from the rear axle, so that the passage of sidewalks or of obstacles is

greatly facilitated.

  Furthermore, during movement, the jack which has a damping function over a short stroke greatly improves the comfort of this medical seat and limits the transmission of irregularities from the rolling track to the seat and

  therefore to the person installed therein

lée.

  In addition, if necessary, the

  rin of known type, also has a regulation

  ge in height in stages so that the height

  base 240 can be easily adjusted

relative to the ground.

  As fitted, the footrest is also adjustable both in inclination and in length.

  which also facilitates adjustments.

  The mobile support according to the invention is also

  designed to be folded so as to reduce its

  size, especially when not in use

  and that it must be transported in a vehicle

classic ass.

  After removing the medical seat, the screw 224 is loosened so that the connecting member

  222 is detached from the rear axle 226.

  The axle / wheel and strut 230 assembly being released, it can be folded forward

under the arms 210.

  The thrust arm 256 is also removed from the assembly by detachment of the connecting member 262 from the plate 218 It then suffices to rotate the sheath 220 containing the piston 234 around the axis 217 to bring back

  the lower end of this sheath near

immediate mite of arms 210.

  Thus the base 240 is found substantially per-

  pendulum to the arm 210, while the sheath is found substantially parallel to these same arms. The assembly is compact and the space requirement is therefore reduced. 5 It is specified that the footrest assembly being movable in rotation and in length is also

  folded adequately so as to be brought close to the same arms 210.

Claims (7)

  1 medical seat comprising a seat (14) an articulated back (12) with respect to this seat, characterized in that it comprises at least one thigh support (44) provided with means of articulation with respect to the seat and   arranged at the front of this seat.   2 Medical seat according to any one   of the preceding claims, characterized in   that it includes at least one separator (60, 148> arranged in the middle part of the support   thigh fixed on the thigh support.   3 medical seat according to claim 2, characterized in that the separator (148) comprises a vertical axis (150) and two plates   (149) rotatably mounted about this vertical axis   as well as a means of blocking the plates   in a given angular position.   4 medical seat according to claim 1 or 2, characterized in that the separator (60) is double and comprises two L-shaped sections provided with means of articulation relative to the support thigh.   Medical seat according to claim 1, characterized in that the thigh support <44) is double and composed of two flaps (46) substantially parallel and horizontal, provided   articulation means (54, 56, 58) compared to   wearing seat (14) so as to adjust each flap independently in inclination, in height   and in length relative to the seat.   6 medical seat according to claim, characterized in that the means of articulation-   tion of the component include a first trans-   versal cooperating with a bore (58) of the shutter and an oblong hole (40) formed in the seat and a second transverse axis cooperating with two oblong holes (38) of the seat and (56) of the shutter. 7 medical seat according to claim 6, characterized in that in the separator (148) comprises a vertical axis (150) and two plates (149) rotatably mounted about this vertical axis as well as a plate locking means in a given angular position,   the vertical axis being mounted directly on the as- located between the two shutters.   8 Medical center according to any one   of the preceding claims, characterized in   what it further includes means of hand-   lateral side (68) and armpit supports (104) provided with means of adjustment in translation and in orientation respectively with respect to   the seat (14) and the backrest (12), a lom-   baire <112) adjustable in projection with respect to the backrest as well as a holder (118) adjustable in height and comprising means for receiving accessories.   9 Mobile support associated with the medical seat   cal according to any one of claims   previous, characterized in that it comprises a chassis comprising two front arms (210) each provided at one of their ends with a steerable wheel (214), a central plate (218)   designed to receive the seat (14) of the seat, the   said plate being mounted on a damper (234) on the one hand and integral with its lower part with a rear axle (236) on the other   apart, this axle carrying a wheel (226) with each   one of its ends, the assembly being com-   supplemented by two struts (230) interpo-   between the arms and the rear axle. Movable support according to claim 9, characterized in that it comprises a push arm (256) adjustable in inclination in the   vertical plane and provided with amo- visible with the chassis.