Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
  • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
  • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
  • A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position

Definitions

• the present invention relates to a medical bed comprising a rest surface with variable geometry.
• the purpose of these beds is to relieve patients suffering in particular from rheumatological, bone or neurological conditions.
• the medical bed comprising a frame and a rest surface with variable geometry is characterized in that said means make it possible to move at least one of the subassemblies relative to the other in the longitudinal direction of the frame so as to modulate the longitudinal dimensions of the rest surface.
• the rest surface consists of a single box spring with articulated sections.
• the geometry of the rest surface can now be adapted to the size of the patient and / or to his morphology, and / or to therapeutic needs.
• the sub-assemblies are removably mounted on the chassis.
• the frame and each sub-assembly can be moved separately.
• the chassis and the subassemblies can also be stored separately.
• Each adjustable base can be, at least indirectly, articulated along a substantially median transverse axis to means movable in height.
• Height adjustment means can be associated with the box spring on either side of this axis to adjust both the height and the inclination of the bed base around one axis.
• FIG. 1 is a perspective view of a medical bed according to the invention.
• FIGS. 2 and 3 are side elevational views of the foot region and respectively of the head region of the bed of Figure 1;
• FIG. 4 is an end view of the head of the bed of Figure 1;
• FIG. 5 is a partial perspective view of the chassis and the foot carriage
• FIG. 6 is a detail view illustrating one coupling between a carriage and its drive screw
• FIG. 7 is a view of the joint between the foot base and a vertical guide means;
• FIG. 8 is a partial perspective view of a linear actuator, *
• FIG. 9 is a view of the joint between the height adjustment screw and the foot base
• FIG. 10 is a partial perspective view of the mounting of the chest base on an oscillating cradle
• FIG. 11 is a view of a detail of Figure 10, in section along the axis supporting the translation device of the bed base;
• FIG. 12 is a perspective view illustrating the mounting of the basin support.
• the medical bed according to the invention comprises a frame 1 comprising two longitudinal members 2 connected together by multiple crosspieces 3.
• Feet 4 carry at their lower end swivel castors 6 and are connected together by stiffeners 7 also connected to the side members 2.
• the bed comprises a rest surface 8 intended, as shown in Figures 2 and 3, to receive for example a mattress 9 on which the patient takes place.
• the rest surface 8 is subdivided into individual bed bases comprising, in the following order from head to foot of the bed: a headrest 11, a bust support 12, intended to support the bust of the patient , a pelvis support 13, intended to support the patient in the pelvis region, a thigh support 14 and a leg support 16, also supporting the feet.
• the headrest and the bust support 12 belong to a head sub-assembly 17, while the thigh support 14 and the leg support 16 belong to a foot sub-assembly 18.
• the basin support 13 belongs to an intermediate sub-assembly 19.
• the sub-assembly of the foot 18 comprises a frame or frame 21 of which two longitudinal elements each carry two tabs 22 directed downwards and rotatably supporting two rollers 23 which are bearing support on the corresponding spar 2, acting as a rail.
• the foot sub-assembly 18 is thus made displaceable longitudinally on the chassis 1.
• a linear actuator 24 is functionally interposed between the chassis 1 and the frame 21.
• the linear actuator 24 comprises a housing 26 rigidly fixed to the chassis 1, substantially at equal distance between the longitudinal members 2, by means of two tubular rods 27 each extending between the housing 26 and a lug 28 fixed to a respective one of the longitudinal members 2.
• the rods 27 are prevented from rotating relative to the housing 26 and by relative to the lugs 28.
• a lead screw 29 parallel to the side members 2 is supported with the possibility of rotation about its axis and of translation along its axis by the housing 26.
• the housing 26 contains a nut 30 (FIG. 8), the the thread is in thread connection with the lead screw 29.
• the nut 30 is mounted so that it can rotate without the possibility of sliding relative to the housing 26.
• the housing 26 supports an electric motor 31 to two directions of movement, driving in rotation a bevel gear 25 meshing with a corresponding bevel gear formed on one nut 30.
• the lead screw 29 (FIG. 5) has two flanges 32 defining between them a groove 33.
• a coupling fork 34 is fixed under a cross member 36 of the frame 21 for engage around the groove 33 between the two flanges 32.
• the rotation of the nut 30 in the housing 26 causes a longitudinal displacement of the lead screw 29 relative to the chassis 1 of the bed and this displacement is transmitted by the coupling fork 34 to the sub-assembly 18 to move this the latter in one direction or in the other along the chassis 1 while the rollers 23 roll on the side members 2 acting as rails.
• the sub-assembly 18 is easily removable.
• a rising and falling guide device 35 is interposed between the leg support 16 and the frame 21 of the sub-assembly 18.
• the guide device 35 comprises two vertical tubular guides 37 fixed to the frame 21 in symmetrical positions on either side. other of the median longitudinal plane of the bed.
• each vertical tubular guide 37 is engaged in a freely sliding manner a respective guide rod 38.
• the two rods 38 stiffened by a crosspiece 39 which connects them, are articulated by their upper end to the leg support 16 along a common transverse horizontal axis. 41.
• the leg support 16 (FIG. 7) carries on its lower face for each rod 38 a yoke 42 crossed by a pin 43 which also passes through an end lug 44 of the rod 38, engaged in the yoke 42.
• the leg support 16 (FIG. 2) is connected to the frame 21 by two height adjustment devices 46 located on either side of the axis 41.
• the height adjustment devices 46 are located as close as possible to the front edge and respectively to the rear edge of the leg support 16.
• Each height adjustment device 46 is constituted by a linear actuator identical to the longitudinal displacement actuator 24 except that the lead screw 47 is arranged in an orientation close to the vertical and that it is articulated in a manner that is not easily removable by its coupling end, on the underside of the leg support 16.
• the leg support 16 (FIG. 1)
• the upward and downward guidance 35 forces the articulation axis 41, integral with the leg support surface 16 to remain in a transverse vertical plane 56 while the actuators 46, independently adjustable l 'from each other, jointly determine on the one hand the position of the articulation axis 41 along the plane 56 and on the other hand the inclination of the leg support 16 around the axis 41.
• the articulations actuators 46 along the axes 51 relative to the leg support 16 and 54 relative to the frame 21 allow the actuators 46 to oscillate depending on the setting.
• the thigh support 14 is articulated along a horizontal axis transverse 57 to the adjacent edge of the leg support 16.
• the thigh support 14 is connected to the frame 21 by a height adjustment device 59 constituted by a linear oscillating actuator identical to the two actuators 46.
• the head sub-assembly 17 It comprises a frame 61 similar to the frame 21 of the foot sub-assembly 18.
• the frame 61 is mounted on bearings by rollers 62 on the longitudinal members 2 of the chassis 1 and it is thus movable along the chassis 1 by means of a linear actuator 63 quite similar to the actuator 24.
• the sub-assembly 17 can thus be removed from the chassis 1 by simple lifting at the same time releasing the coupling fork 64 between the two flanges 66 belonging to the lead screw 67 of the linear actuator 63.
• the frame 61 carries an up and down guide device 68 and two height adjustment devices 69 similar to those described with reference to Figures 2 and 5, including in their mutual arrangement.
• these up and down guidance and height adjustment devices support not the bust support 12 but an oscillating cradle 71 (see also Figure 10) which in turn supports the bust support 12 with the possibility of longitudinal sliding .
• the bust support 12 is fixed on a frame 72, two longitudinal elements 73 each having a longitudinal slot 74 forming a slide.
• the longitudinal movement of the bust support 12 relative to the cradle -71 is controlled by a linear actuator 76 very similar to those described so far.
• the two rods 77 supporting the housing 75 of the actuator 76 each pass through one of the elongated slots 74 to guide the frame 72 relative to the cradle 71.
• Each rod 77 is equipped with a washer 78 engaged in the slot 74 to reduce friction between the slot 74 and the rod 77.
• the washer 78 has an external groove in which are engaged the two opposite edges of the slot 74. Beyond the slot 74, each stem 77 is supported with possibility of rotation about its axis in a bearing 79 fixed to the cradle 71.
• the bust support 12 In service, the bust support 12, after having been adjusted in longitudinal position relative to the cradle 71, itself adjusted in height and inclination, is free to pivot on a limited angular travel around the transverse axis 80 defined by the rods 77, to automatically adapt to the patient's movements and attitudes.
• the headrest 11 is freely pivotable about a transverse horizontal axis 81 which is supported in a fixed position relative to the frame 61 by means of two rigid uprights 82.
• the axis 81 is eccentric in the direction opposite to the bust support 12 Thus, an edge 83 of the headrest 11 rests freely on the bust support 12.
• the basin support 13 is integral with the chassis with respect to the longitudinal displacements. It is connected to the chassis 1 by an up and down guide device 84 similar to the up and down guide device 35 of the sub-assembly 18 except that its guide tube 86 is made integral with the frame 1.
• the basin support 13 is freely articulated at the upper end of the rods 87 of the guide device 84 along a transverse horizontal axis 88, for example by means of a clevis, ear and journal articulation as described for the device rises and falls 35 (FIG. 7 ).
• a height adjustment device 89 consisting of a linear actuator similar to those 24, 46 etc described above comprises a housing 91 fixed to the chassis 1 by transverse rods while its lead screw 92 (see FIG.
• the pelvis support 13 takes on a tilt consistent with those of the bust support 12 and the thigh support 14.
• the pelvis support 13 can be moved downwards thanks to the actuator 89 to a retracted position then making it possible to make the bust support 12 and the thigh support 14 almost contiguous. This is possible by adjusting in advanced position the head sub-assembly 17 relative to the chassis 1 and the bust support 12 relative to the cradle 71. Thus, the rest surface is shortened, which makes it possible to adapt it to the size d 'a kid.
• connection box 94 (FIG. 1) to which is connected a remote control box 96 which can be made available to the patient to allow him to modify him. even the geometry of the rest surface 8, or which can be neutralized either by disconnecting it from the connection box 94 or by actuating a switch 97 provided for this purpose.
• the bed can be fitted with the usual protective barriers and bracket.
• a traditional cylinder backrest can be installed between the sub-assembly 17 and the chassis 1 to pivot the sub-assembly 17 substantially around the axis of the rollers 62 located on the side of the basin support 13. During this movement, the coupling fork 64 disengages from the linear actuator 63.
• each bed base is adjusted in height and inclination. 12, 14, 16, the height of the patient's head being determined by the headrest 11.
• the pelvis support 13 is simply adjusted in height in a manner consistent with the other bed bases, and takes the correct inclination by itself compared to these.
• the medical bed according to the invention allows the disabled patient, for example paralyzed, to regain true mobility and autonomy allowing him, thanks to the different motors, to change position alone, or even to perform rehabilitation exercises.
• the bed becomes a kind of prosthesis.
• the arrangement described and shown has the advantage of using only a small number of different components, each used a large number of times in the structure, which reduces the overall cost of the bed.
• the means for longitudinally moving the subassemblies and for adjusting the height and inclination of the bed bases could be different.

Landscapes

• Health & Medical Sciences (AREA)
• Veterinary Medicine (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Nursing (AREA)
• Invalid Beds And Related Equipment (AREA)
• External Artificial Organs (AREA)
• Thermotherapy And Cooling Therapy Devices (AREA)
• Joints Allowing Movement (AREA)
• Orthopedics, Nursing, And Contraception (AREA)
• Prostheses (AREA)
• Accommodation For Nursing Or Treatment Tables (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9451172

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (7)

Family Cites Families (4)

• 1993
  • 1993-09-23 FR FR9311351A patent/FR2710261B1/fr not_active Expired - Fee Related
• 1994
  • 1994-09-21 AT AT94928423T patent/ATE161166T1/de not_active IP Right Cessation
  • 1994-09-21 DE DE69407424T patent/DE69407424T2/de not_active Expired - Fee Related
  • 1994-09-21 AU AU77855/94A patent/AU7785594A/en not_active Abandoned
  • 1994-09-21 CA CA002172397A patent/CA2172397A1/fr not_active Abandoned
  • 1994-09-21 EP EP94928423A patent/EP0720467B1/de not_active Revoked
  • 1994-09-21 WO PCT/FR1994/001103 patent/WO1995008315A1/fr not_active Application Discontinuation

Non-Patent Citations (1)

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