MEDICAL DEVICE FOR SUPPORTING AT LEAST ONE AREA OF THE BODY

Description

[0001] The present invention relates to the technical field of medical devices intended to support at least one area of ​​the body comprising at least one textile panel elastic in the longitudinal direction capable of being placed on said area of ​​the body by means of a mechanical device for tensioning said textile panel multiplying the manual tensioning force of the person placing said at least one textile panel. Background of the invention

[0002] Medical devices designed to support at least one portion of the body, such as knee or ankle orthoses or lumbar belts, need to be properly adjusted to be effective. The action of these support devices is linked to good containment of the said area of ​​the body targeted by the prescriber. For example, a patellar knee brace is effective if it correctly supports the kneecap, which implies that the knee brace is properly adjusted at the calf and thigh level. Many patients, unfamiliar with medical support devices, adapt them poorly to their pathologies, either because their morphologies do not lend themselves to them, or especially because they do not understand how to use all the elements of the medical support device.

[0003] US 4,207,885 A discloses an elastic compression bandage intended to support at least one area of ​​the body such as the knee, the bandage having a longitudinal direction and a transverse direction arranged so as to encircle all or part of said area of ​​the body to be supported, said woven strip having a warp direction and a weft direction, and comprising weft threads, first warp threads, second warp threads, and third warp threads, said first warp threads and said second warp threads are woven in a gauze weave, the second warp threads forming the lap threads, the warp and weft directions of the woven strips are parallel to each other; the different threads are made of cotton and said textile panel is made elastic in the longitudinal direction by the gauze weave.

[0004] Furthermore, these medical support devices are often very tedious to close, while the patient may have problems understanding and even complying. Indeed, a medical device that is complicated to implement will not be used and the pathology will not be treated.

[0005] Medical devices for supporting at least one area of ​​the body, such as a lumbar support belt, usually comprise at least one elastic textile panel, i.e. capable of stretching in at least one direction under the effect of a constraint exerted solely manually by the patient and having an elastic recovery at least greater than or equal to 90% of its initial length. The elastic textile panel used is generally a fabric comprising elastic threads in the weft.

[0006] The constraints imposed by certain standardization systems, in particular by the French social security system, stipulate that the textile panels of medical support devices must stretch by at least 30% under the effect of a minimum force, the value of which is determined according to the type of device. Thus, it is required that lumbar support belts stretch by at least 30% under the effect of a force greater than or equal to 350 cN / cm and that the textile panels of lumbar support belts stretch by at least 30% under the effect of a force greater than or equal to 250 cN / cm, the elastic recovery must in both cases be greater than or equal to 90% of the initial length of the dimension of the panel that was stretched.It is therefore necessary to apply a force that is greater than or equal to 350 cN / cm or 250 cN / cm respectively for lumbar support belts and textile panels of lumbar support belts to obtain an elongation of 30%. Such devices have the advantage that they fit perfectly onto the area of ​​the body to be supported. However, these devices comprising an elastic textile panel that stretches under manual stress alone do not provide a feeling of support and a feeling of tightening as significant as those provided by an inelastic, so-called "rigid" textile, which is applied to the area to be supported using a mechanical tightening device that multiplies the patient's manual application force.

[0007] Furthermore, it is not possible to combine a mechanical device that multiplies the manual application force with an elastic textile panel because the stroke required for the mechanical device to obtain a tightening as strong as that obtained using an inelastic textile panel would be too great. The tightening obtained would therefore not be effective. Furthermore, the mechanical tightening device that multiplies the manual application force would be too complex and bulky to be able to be added to a medical device intended to be worn by a user. Finally, the tightening time to obtain the compression force required to support said at least one area of ​​the body would be longer than the tightening time required in the case of an inelastic textile panel.

[0008] There is thus a need for a medical device comprising at least one textile panel having elastic behavior in at least one direction, in particular capable of stretching by at least 30% of its initial length in said direction with an elastic recovery at least greater than or equal to 90% of the initial length which has been stretched, and capable of being applied by means of a mechanical clamping device multiplying the manual application force without stretching, or only by the order of a few percent, in order to obtain a sensation of tightening and therefore of support equivalent to those provided by inelastic textiles. Subject matter and summary of the invention

[0009] The invention is set forth in the appended set of claims.

[0010] The present invention relates to a medical device intended to support at least one area of ​​the body, in particular a knee or ankle orthosis, support belt or support band, comprising at least one textile panel having a longitudinal direction (L) and a transverse direction (T) arranged so as to encircle all or part of said area of ​​the body to be supported. Advantageously, said at least one textile panel comprises a woven textile strip, or several woven textile strips at least partially superimposed, said woven strip or said woven strips each having a warp direction (C) and a weft direction (t), and comprising weft threads, first elastic warp threads, second non-elastic warp threads, and third warp threads, said first warp threads and said second warp threads are woven in a "leather" weave, the second warp threads forming the turn threads.Furthermore, said at least one textile panel is elastic in the longitudinal direction (L) in that it has, in this direction (L) to obtain an elongation equal to 30%, a force which is greater than or equal to 500 cN / cm, in particular measured according to standard NF EN 14704-1 of June 2005.

[0011] It has been found that the combination of first elastic warp threads and second non-elastic warp threads using a so-called "no gauze" technique in a fabric, by exerting significant traction on said first elastic warp threads so as to take up their reserve elasticity, makes it possible to obtain a woven strip behaving like a rigid textile when laid under the effect of a manual tensile force, but also rigid even when said manual tensile force is multiplied by a clamping device multiplying said force. The expression "capable of" or "arranged so / for" in the present text is equivalent to the following expressions, considered independently of each other: "intended for", "configured for", "adapted to authorize" and "adapt to conform to".

[0012] The textile panel comprising one or more woven strip(s) also exhibits elastic behavior under the effect of a very high tensile force which cannot be achieved manually, nor even using a clamping device which multiplies said force in order to avoid excessive clamping travel when installing said device.

[0013] It is therefore necessary to apply a very high force in the longitudinal direction (L) of the textile panel according to the invention to obtain an elongation greater than or equal to 30%, in particular a force greater than or equal to 500 cN / cm, preferably a force greater than or equal to 700 cN / cm, more preferably greater than or equal to 1000 cN / cm, more preferably greater than or equal to 1000 cN / cm and less than or equal to 2500 cN / cm.

[0014] Equivalently, the force required to elongate the textile panel according to the invention in the longitudinal direction (L) by 30% is greater than or equal to 500 cN / cm, preferably greater than or equal to 700 cN / cm, more preferably greater than or equal to 1000 cN / cm, more preferably greater than or equal to 1000 cN / cm and less than or equal to 2500 cN / cm.

[0015] The textile panel according to the invention, although elastic under very high stress, provides the patient with a very good feeling of support, improving their comfort and, at the same time, compliance with the application of the medical device according to the invention.

[0016] The first elastic warp threads do not rotate around another thread but pass above or below the weft threads as is conventionally the case for a warp thread in a fabric. The first elastic warp threads thus have an arrangement parallel to the warp direction (C) of the woven strip according to the invention.

[0017] Preferably, said textile panel, and in particular said woven strip(s), has(have) in the longitudinal direction (L), or the warp direction (C), an elongation greater than or equal to 30% under the effect of a force greater than or equal to 700 cN / cm, preferably greater than or equal to 1000 cN / cm, more preferably under the effect of a force greater than or equal to 1000 cN / cm and less than or equal to 2500 cN / cm, or similarly, the force necessary to elongate said textile panel, and in particular said woven strip(s), in the longitudinal direction (L), or the warp direction (C), by 30%, is greater than or equal to 700 cN / cm, preferably greater than or equal to 1000 cN / cm, more preferably greater than or equal to 1000 cN / cm and less than or equal to 2500 cN / cm. In particular, said elongations and forces are measured according to standard NF EN 14704-1 of June 2005.

[0018] A textile panel may comprise several woven strips superimposed such that the longitudinal edges of the woven strips are parallel to each other or intersect at a given angle. In particular, the woven strips may be superimposed such that the warp and weft directions (preferably the warp directions) of said strips are parallel to each other or such that the warp or weft direction (preferably the warp direction) of a given woven strip is arranged at an angle alpha greater than 0° and less than 90° relative to the warp or weft direction (preferably the warp direction) of another woven strip, preferably the angle alpha is greater than or equal to 30° and less than or equal to 60°. The angle alpha may be, for example, of the order of 45°.

[0019] Preferably, the transverse edges of the overlapping woven strips are aligned.

[0020] The force required to obtain an elongation of at least 30% of a textile panel in the longitudinal direction (L) is equal to the sum of the forces applied individually to each woven strip used in the composition of said panel so that each of the woven strips elongates by at least 30% in the warp direction (C).

[0021] In one embodiment, said at least one woven strip is elastic in the warp direction (C) in that it has an elongation greater than or equal to 30% under the effect of a force greater than or equal to 500 cN / cm, preferably greater than or equal to 700 cN / cm, more preferably greater than or equal to 1000 cN / cm and less than or equal to 2500 cN / cm, in particular measured according to standard NF EN 14704-1 of June 2005; or similarly, said at least one woven strip is elastic in the warp direction (C) in that it has at an elongation of 30% an applied force which is greater than or equal to 500 cN / cm, preferably greater than or equal to 700 cN / cm, more preferably greater than or equal to 1000 cN / cm and less than or equal to 2500 cN / cm

[0022] Standard NF EN 14704-1 dated June 2005 is incorporated by reference into this text. This standard is entitled "Determination of the elasticity of fabrics, Part 1: Strip tests". The principle is that a fabric specimen of specified size is stretched at a constant speed to either a specified force or a specified elongation for an agreed number of cycles, and its elasticity is determined by measuring several characteristics. The constant rate of elongation apparatus is defined in point 6 of this standard and must in particular be able to operate at constant rates of elongation, in particular at a rate of elongation of 500 mm per minute. The fabric specimen tested may be in a strip (method A) or a loop (method B), preferably in a strip (method A).The force in cN / cm obtained to have an elongation greater than or equal to 30%, in particular of the order of 30%, is calculated by establishing the average of the forces measured at 30% elongation (or more) over 5 tensile cycles. According to a variant, the textile panel comprises a single woven strip.

[0023] In another variant, the textile panel comprises two or three superimposed woven strips.

[0024] The so-called "gauze pas" technique is usually used in the field of ready-to-wear or decorative articles, for example for curtains, such as in the fabric described in US 3,920,054. In this document, an elastic thread and a non-elastic turn thread are arranged in the same tooth of the reed during weaving. It can be seen in the figures that the non-elastic turn thread makes one turn around the elastic thread for three insertions of weft thread. This weaving technique, also called "leno" or "English turn", makes it possible to create openwork decorations in fabrics.

[0025] US 4,207,885 describes the manufacture of a compression bandage in which the "leather" weaving technique is used. The yarns 12A and 12B woven according to the so-called leather technique are textured polyamide multifilament yarns. During weaving, the warp yarns woven according to the leather technique and the other warp yarns are tensioned and fed in a conventional manner to the loom, the warp yarns woven two by two according to the leather technique being tensioned more than the other warp yarns due to the movement of the turn yarn in the warp direction. Upon leaving the loom, the woven strip undergoes a heat shrinkage step to give said strip a certain final extensibility. This bandage is wrongly described as elastic although it does not include elastic yarn.

[0026] For the purposes of the present invention, the term elastic textile panel or elastic woven band in a given direction or direction, whether the warp direction and / or the weft direction and / or the longitudinal direction (L), or elastic yarn, in particular first elastic warp yarn and / or third elastic warp yarn, is understood to mean that said panel or said woven band has in said longitudinal direction (L) or in said direction, or said yarn has, an elastic recovery at least greater than or equal to 90%, in particular measured according to standard NF S97-115 dating from December 2011 combined with standard NF EN 14704-1 dating from June 2005.

[0027] For the purposes of the present invention, the term “non-elastic textile panel” or “non-elastic woven strip” in a given direction (warp or weft) or direction (longitudinal or transverse), in particular in the weft direction (t) or the transverse direction (T), or non-elastic yarn, in particular second non-elastic warp yarn and / or third non-elastic warp yarn, is understood to mean that said panel or said woven strip has in said transverse direction (T) or said weft direction (t), or said yarn, an elastic recovery of less than 90%, in particular measured according to standard NF S97-115 dated December 2011 combined with standard NF EN 14704-1 dated June 2005.

[0028] Preferably, the textile panel and the woven strip according to the invention are not elastic respectively in the transverse direction (T) and in the weft direction (t).

[0029] In one embodiment, the holding device according to the invention comprises a first end and a second end, the first end comprises a first attachment member and the second end comprises a second attachment member, said first and second attachment members being able to cooperate together for their closure and therefore correlatively the securing of said holding device to said at least one area of ​​the body to be supported.

[0030] The first and second attachment members may be attachment members of the loop and / or hook type, or magnet type, or any other attachment member known to those skilled in the art.

[0031] Advantageously, the medical holding device according to the invention comprises a mechanical clamping device which multiplies the manual application force of said medical holding device, in particular comprising a clamping device using cable(s) and / or a clamping device using pulley(s).

[0032] The first warp thread(s) is / are one or more monofilament thread(s) made of elastane, i.e. based on polyurethane, for example such as those marketed under the brand name Dorlastan ®< , Glospan ®< , Linel ®< , Creora ®< or Lycra ®< . The elastic thread(s) may also be one or more monofilament thread(s) made of latex, i.e. based on natural or synthetic rubber, such as for example elastodiene, or any other equivalent material known from the state of the art. Said monofilament elastic yarn(s) may also form the elastic core, which core is covered or gimped with one or more covering yarns, preferably as defined below with reference to the fiber-spun yarn(s) and the multifilament yarn(s).

[0033] The weft yarn(s) and / or the second non-elastic warp yarn(s) and / or the third warp yarn(s) is / are selected from the group consisting of multifilament yarn(s), monofilament yarn(s) and fiber spun yarn(s).

[0034] The third warp thread(s) may or may not be elastic. If the third warp thread(s) is / are elastic, it / they preferably have the same structure and / or composition as the first warp thread(s).

[0035] Preferably, the third warp thread(s) is / are not elastic.

[0036] The weft thread(s) and / or the first warp thread(s), the second warp thread(s) and / or the third warp thread(s), possibly the cover thread(s) can be colored or transparent depending on the desired aesthetic result.

[0037] The weft yarn(s) and / or the cover yarn(s) of the first warp yarn(s) and / or the second warp yarn(s) and / or the third warp yarn(s) (when it is / are not elastic) is / are in one or more materials chosen from the group comprising: polyamide 6, polyamide 6-6, polyamide 12, polypropylene, polyethylene, polyester such as polyethylene terephthalate, cotton, viscose, polyacrylic.

[0038] The woven strip is in a fabric having a number of weft threads per centimeter (measured in the warp direction (C)) less than or equal to 25, more preferably less than or equal to 15.

[0039] The number of threads per centimeter, in warp or weft in the woven panel according to the invention, means the number of threads on the fabric at rest, in particular after any possible heat-setting operations applied to said woven strip at the outlet of the loom, per centimeter in the warp or weft direction.

[0040] At least one of said first warp threads is covered by at least one first covering thread.

[0041] This arrangement makes it possible to adjust the tension applied to the first warp threads to obtain a rigid textile panel within the meaning of the invention but elastic under very high stress.

[0042] Preferably, said first cover yarn forms a number of turns / m on said at least one first warp yarn of between 720 turns / m and 1080 turns / m.

[0043] According to one embodiment, at least one of said first warp threads is covered by a first covering thread and a second covering thread.

[0044] Preferably, the second cover yarn forms a number of turns / m on said at least one first warp yarn of between 590 turns / m and 880 turns / m.

[0045] In a variant, at least one of said first elastic warp threads, optionally covered by at least one first covering thread (and optionally a second covering thread), has an elongation at break of less than or equal to 150%, preferably greater than or equal to 50%, more preferably greater than or equal to 75%.

[0046] This elongation at break can be measured according to the NF ISO 2062 standard dating from 2010, applying in particular to synthetic textured yarns. This elongation at break can be measured on said at least one elastic warp yarn before it is woven or warped.

[0047] In the method for manufacturing the woven strip according to the invention, a very high tension is exerted on said at least one first elastic thread so as to take up its reserve of elasticity. Said at least one first elastic thread thus has less elongation in the woven strip than the elongation it has before having been implemented by weaving, that is to say on its supply reel.

[0048] In fact, a state-of-the-art elastic thread generally has an elongation at break of at least around 400% to 500% measured on its supply reel before any implementation by weaving.

[0049] The second warp threads make one turn for an insertion of a weft thread.

[0050] Preferably, said second warp threads make one turn for a weft thread insertion over at least a portion of the warp length of each woven strip.

[0051] This arrangement makes it possible to block the first elastic warp threads so as to take from their reserve of elasticity, that is to say to reduce their available elongation at break. In the state of the art, the turn thread generally makes a single turn for two or three inserted weft threads whereas in the present invention the second non-elastic warp threads form a turn for a single insertion of weft thread in order to block and constrain the first elastic warp threads.

[0052] At least one of said weft threads comprises a thread having a number of filaments greater than or equal to 1 and less than or equal to 5, preferably a number of filaments greater than or equal to 1 and less than or equal to 3, each filament having a diameter greater than or equal to 0.10 mm, in particular less than or equal to 0.60 mm, in particular less than or equal to 0.45 mm.

[0053] This arrangement promotes the rigidity of the woven strip in the weft direction but also in the warp direction.

[0054] In a variant, the woven strip or several woven strips comprise(s) an alternation of solid columns and openwork columns, each of said solid and openwork columns having a longitudinal direction (I) corresponding to the warp direction (C) of said woven strip, the solid columns comprising along each of their longitudinal edges at least a first warp thread and a second warp thread assembled in a leno weave.

[0055] Preferably, the solid columns comprise the first elastic warp yarns, the second non-elastic warp yarns, the third warp yarns and the weft yarns as defined herein.

[0056] Preferably, the solid columns and the openwork columns are alternated one by one.

[0057] Preferably, solid columns are not openwork as opposed to openwork columns.

[0058] The openwork columns thus include holes having at least one dimension greater than or equal to 1 mm. These holes promote the evacuation of heat and perspiration from the wearer.

[0059] In one variation, the openwork columns are made of weft threads.

[0060] In a variant, the medical device according to the invention comprises a clamping device for multiplying the manual application force of said at least one textile panel, in particular a mechanical clamping device comprising a cable clamping device(s) and / or a pulley clamping device(s). This multiplier clamping device makes it possible to multiply by two, three, or even more, the manual application force of said at least one textile panel.

[0061] The subject of the present invention, according to a second aspect, is a method of manufacturing a device according to any one of the preceding embodiment variants with reference to a first aspect, comprising the following steps: a first step of weaving a woven textile strip, or several woven textile strips, each textile strip being woven with first elastic warp threads, second non-elastic warp threads, third warp threads, and weft threads, the first warp threads and the second warp threads being woven in a leno weave so that the second threads form the turn threads; a step of applying a tension (daN) to at least one of said first elastic warp threads, preferably to all of the first elastic warp threads, so as to lengthen said at least first elastic warp thread during said first step;a step of forming a textile panel having longitudinal (L) and transverse (T) directions comprising a woven textile strip, or several superimposed woven textile strips, said textile panel having in the longitudinal direction (L) to obtain an elongation equal to 30%, a force which is greater than or equal to 500 cN / cm, in particular measured according to standard NF EN 14704-1 of June 2005.;

[0062] In a sub-variant, said woven textile strip or said woven textile strips undergoes / undergo a finishing step.

[0063] In a preferred embodiment, said step of preparing the woven textile strip comprises the following steps: a first heat post-treatment step consisting of immersing the woven strip in a hot water bath for at least one second, preferably for at least 15 seconds, the temperature of the water in said bath being preferably greater than or equal to 60°C; or a first heat post-treatment step consisting of immersing the woven strip in a water bath at room temperature (preferably the temperature of which is greater than or equal to 10°C and less than or equal to 30°C), said bath comprising at least one additive, said additive preferably being chosen so as to impart rigidity (“hand” to the woven strip) or flexibility;and then a second heat post-treatment step consisting of passing the woven strip into a treatment chamber comprising hot air, or humid air, preferably the air temperature is greater than or equal to 60°C (and less than or equal to 150°C), then calendering said woven strip by passing it over at least one heated cylinder, in particular over a set of heated cylinders, in order to obtain its dimensional shrinkage.;

[0064] Said at least one additive may be a silicone or polyurethane polymer. A person skilled in the art knows which additive(s) to choose to impart rigidity or flexibility to a woven textile strip.

[0065] Furthermore, the external surface of the cylinder or cylinders during the calendering of the second heat post-treatment step may be metallic, and / or possibly coated with a coating in a non-adherent polymer, for example a fluoropolymer such as PTFE. A person skilled in the art knows how to adjust the temperature of said cylinder(s) as well as its rotation speed(s) so as to obtain relaxation of the textile strip and dimensional shrinkage thereof.

[0066] This post-treatment step allows the fabric to be given its final mechanical characteristics, thanks to the shrinkage of the different threads constituting the fabric. The embodiment variants and definitions described above with reference to the first aspect of the invention also apply to the process.

[0067] In a variant, the step of applying a tension (daN) consists of applying a tension to at least one of said first elastic warp threads using one or more devices chosen from the group comprising the following devices: at least one of said first elastic warp threads is covered by at least one first covering thread having a number of turns / meter greater than or equal to 720 turns / m, and / or a tension exerted on at least one of said first elastic warp threads greater than or equal to 10 cN, and / or a number of turns of the second warp threads equal to one for an insertion of a weft thread.

[0068] The tension exerted on a wire (measured in cN) can be measured, for example, using a tensiometer. Detailed description of the drawings

[0069] The present invention will be better understood by reading the following exemplary embodiments, cited without limitation, illustrated by the following figures annexed hereto, and in which: there figure 1 is a schematic representation of a first example of a woven strip according to the invention; the figure 2 is a schematic representation of the arrangement of the threads of a solid column between two openwork columns of the woven band shown in figure 1 ; there figure 3 is a schematic representation seen from its rear face of a first example of a medical device according to the invention comprising two textile panels, each textile panel comprising two woven textile strips such as the woven strip shown in figure 1 , said medical device is in this specific example a lumbar support belt. Detailed description of the examples of realization

[0070] The woven textile band1 according to the invention shown in the figure 1 has a chain meaning C and a sense of weft t. The said woven band 1 is a fabric comprising weft threads 2, the first elastic warp threads 3, second non-elastic warp threads 4, and third warp threads 5, said first warp threads 3 and said second warp threads 4 are woven in a “no gauze” weave, the second warp threads 4 forming the tower threads. Said woven strip 1 is elastic in the warp direction C and presents in the warp direction, in this specific example, an elongation greater than or equal to 30% under the effect of a force greater than or equal to 700 cN / cm, in particular measured according to standard NF EN 14704-1 of June 2005. Thus, to obtain an elongation of 30% in the longitudinal direction L,it is required to apply said textile panel in this direction L, a force greater than or equal to 700 cN / cm.

[0071] The woven band 1 includes alternating solid columns 6 and openwork columns 7, each of said full columns 6 and openwork 7 having a longitudinal direction l corresponding to the chain direction C of the said woven band 1. Preferably, each of the full columns 6 includes on each of its longitudinal edges 8 at least one first elastic warp thread 3 and a second non-elastic warp thread 4 woven in a gauze weave.

[0072] The openwork columns 7 include weft threads 2 extending in the weft direction t, transversely to the warp direction C.

[0073] The woven band1 includes according to each of its longitudinal edges 1a,1b respectively a border 9,10.

[0074] There figure 2 schematically represents a full column 6 including on each of its longitudinal edges 8, a first elastic warp thread 3 and a second non-elastic warp thread 4 woven together in a gauze weave. The full column 6 is arranged between two openwork columns 7 made up of the weft threads 2. The full column 6 includes third warp threads 5 arranged between the first 3 and seconds 4 warp threads woven in a non-gauze weave.

[0075] As can be seen in the figure 2 , the second warp threads 4 make a turn around the first warp threads 3for inserting a weft thread 2. At least one of the said weft threads 2 is a yarn comprising a number of filaments greater than or equal to 1 and less than or equal to 5, preferably comprising a number of filaments greater than or equal to 1 and less than or equal to 3, in this specific example equal to 3, each filament having a diameter greater than or equal to 0.1 mm.

[0076] In this specific example, the said woven band 1 present in the chain direction C an elongation greater than or equal to 30% under the application of a force greater than or equal to 700 cN / cm. Thus, to obtain an elongation of 30% in the longitudinal direction L, it is required to apply to the said band 1 in this direction L, a force greater than or equal to 700 cN / cm.

[0077] Preferably, the third warp threads 5 and the second warp threads 4are not elastic, and are for example multifilament yarns or yarns spun from fibers having a count greater than or equal to 50 dtex and less than or equal to 500 dtex, for a number of filaments between 10 and 300.

[0078] The first 3, seconds 4 and third 5 warp threads as well as weft threads 2 may be transparent or colored. In addition, said threads may be made of polyamide 6, polyamide 6-6, polyester, polyethylene terephthalate, polypropylene, cotton, or any other natural or synthetic or artificial non-elastic material.

[0079] There figure 3 represents a medical device 20 according to the invention intended to support at least one area of ​​the body. In this specific example, it is a lumbar support belt 21. Said medical device 20 includes a left side part 22and a right side part 23 intended, in operation and therefore when worn, to cover respectively the left flank and at least one left posterior dorsal portion, and the right flank and at least one right posterior dorsal portion of the wearer.

[0080] The medical device 20 comprises a first end 24 and a second end 25 provided respectively with a first attachment member and a second attachment member, said first and second attachment members being capable of cooperating to allow the lumbar support belt to be closed 21 on the wearer's trunk. Said first and second attachment members being, for example, respectively attachment hooks and a textile having attachment loops.

[0081] Each side part 22,23 of the device 20 includes a textile panel respectively 26,27according to the invention. Each textile panel 26,27 includes two woven bands respectively 28, 29 each corresponding to the woven band 1 represented at the figure 1 . Woven bands 28,29 are superimposed and arranged between them so that the warp direction C1 woven band 28 forms an angle alpha of the order of 45° with the chain direction C2 woven band 29.

[0082] Each textile panel, 28 And 29, has in the longitudinal direction an elongation greater than or equal to 30% under the application of a force greater than or equal to 700 cN / cm, in particular between 1400 cN / cm and 2000 cN / cm. It is therefore necessary to apply a force between 1400 cN / cm and 2000 cN / cm in the longitudinal direction of said textile panels 28,29 to obtain an elongation of at least 30% in this direction L.

[0083] The medical device 20 further includes a mechanical clamping device which multiplies the manual installation force 30 arranged between the left side parts 22 and right 23. In this specific example, this multiplier clamping device 30 includes first 31 and second 32 side portions each comprising several eyelets 33,34, in particular four eyelets, for the passage of two elongated elements 35,36, like cords. The eyelets 33 and carnations 34 respectively first 31 and second 32 lateral portions are opposite each other so as to form multiple references of the elongated elements 35,36 multiplying the laying force. Two gripping devices 37,38, in particular two handles, are secured via the elongated elements 35,36 mechanical clamping device audit30 and can be operated by the installer to position the lumbar support belt 21 on its back and tighten the latter so as to make said first and second attachment members cooperate together for the closure of said medical device 20.

[0084] In operation, the patient has the lumbar support belt 21 on his chest, activates the multiplier clamping device 30 by pulling the handles 37,38 in order to clamp and tighten the belt 21 on his back, then makes the first and second attachment members cooperate to secure the belt 21. Textile panels 26,27, although elastic in the longitudinal direction L under very high stress, behave during installation and use with said multiplier clamping device 30,such as rigid textile panels. Thus, the elongation obtained even under the multiplied manual force of said textile panels 26,27 in the longitudinal direction L is very low, for example of the order of a few percent (2 to 5%) without a significant tightening stroke.

Claims

1. A medical device (20) for supporting at least one region of the body, especially knee or ankle orthesis, support belt (21) or support strip, comprising at least one textile panel (26,27) having a longitudinal direction (L) and a transversal direction (T) arranged so as to encircle all or part of said region of the body to be supported, characterized in that: - said textile panel comprises several woven textile strips (1,28,29) at least partially superposed, - said woven strips (1,28,29) each having a warp direction (C) and a weft direction (t), and each comprising weft threads (2), first elastic warp threads (3) of which one or several first elastic warp thread(s) (3) is / are monofilament thread(s), in elastane or in elastodiene, forming an covered or wrapped elastic core with one or several cover thread(s), second non-elastic warp threads (4), and third warp threads (5), said first warp threads (3) and said second warp threads (4) are woven according to a leno weave, the second warp threads (4) forming the doup threads, - the warp and weft directions of woven strips are parallel to each other or the warp or weft direction of a given woven strip is arranged according to an alpha angle greater than 0° and lower than 90° relative to the warp or weft direction of another woven strip, - in that said textile panel (26,27) is elastic in the longitudinal direction (L) and has a force in the longitudinal direction (L) which is greater than or equal to 500 cN / cm, to achieve an elongation equal to 30%, - in that the number of weft threads per centimetre in each of the woven strips is less than or equal to 25, - in that one at least of said weft threads (2) comprises a number of filaments greater than or equal to 1 and less than or equal to 5, each filament having a diameter greater than or equal to 0.10 mm, and in that the second warp threads (4) make a turn for one insertion of a weft thread (2).

2. Device (20) according to claim 1, characterized in that it comprises a multiplier gripping device (30) of the manual application force of said at least one textile panel (26,27), especially a mechanical gripping device by cable(s) (30) and / or by pulley(s).

3. Device (20) according to one or other of claims 1 and 2, characterized in that one at least of said first warp threads (3) is covered by at least one first cover thread.

4. Device (20) according to any one of the claims 1 to 3, characterized in that one at least of said first elastic warp threads (3), optionally covered by at least one first cover thread, has breaking elongation less than or equal to 150%.

5. Device (20) according to any one of the claims 1 to 4, characterized in that one at least of said weft threads (2) comprises a number of filaments greater than or equal to 1 and less than or equal to 3, preferably each filament having a diameter higher or equal to 0.1 mm.

6. Device according to any one of the claims 1 to 5, characterized in that the woven strip (1) or each of said woven strips comprises alternating solid columns (6) and openwork columns (7), each of said solid (6) and openwork (7) columns having a longitudinal direction (l) corresponding to the warp direction (C) of said woven strip (1), the solid columns (6) comprising according to each of their longitudinal edges (8) at least one first warp thread (3) and a second warp thread (4) assembled according to a leno weave.

7. Device according to claim 6, characterized in that the openwork columns (7) are constituted by weft threads (2).

8. Device (20) according to any one of the claims 1 to 7, characterized in that to achieve elongation equal to 30%, said textile panel (26,27) has in the longitudinal direction (L) a force which is greater than or equal to 700 cN / cm, preferably the force is greater than or equal to 1000 cN / cm and less than or equal to 2500 cN / cm.

9. A manufacturing process of a device (20) according to any one of the claims 1 to 8, characterized in that it comprises the following steps: - a first weaving step of several woven textile strips (28,29), each textile strip (1,28,29) being woven with: first elastic warp threads (3) of which one or several first elastic warp thread(s) (3) is / are monofilament thread(s), in elastane or in elastodiene, forming a covered or wrapped elastic core with one or several cover thread(s), second non-elastic warp threads (4), third warp threads (5), and weft threads (2), the first warp threads (3) and the second warp threads (4) being woven according to a leno weave such that the second warp threads (4) form the doup threads, the number of weft threads per centimetre in each of the woven strips is less than or equal to 25, one at least of said weft threads (2) comprises a thread comprising a number of filaments greater than or equal to 1 and less than or equal to 5, each filament having a diameter greater than or equal to 0.10 mm; a tension application step (daN) on one at least of said first elastic warp threads (3) so as to elongate said at least first elastic warp thread (3) during said first step, said application step comprising a number of turns of the second warp threads (4) equal to one for one insertion of a weft thread (2); a shaping step of a textile panel (26,27) having a longitudinal direction (L) and a transversal direction (T) comprising several superposed woven textile strips (28,29) such that the warp and weft directions of woven strips are parallel to each other or the warp or weft direction of a given woven strip is arranged according to an alpha angle greater than 0° and lower than 90° relative to the warp or weft direction of another woven strip, which panel has in the longitudinal direction (L) a force which is greater than or equal to 500 cN / cm to achieve elongation equal to 30%.

10. The manufacturing process according to claim 9, wherein the tensioning step consists of exerting tension on one at least of said first elastic warp threads (3) by means of one or more device(s) selected in the group constituted by the following devices: one at least of said first elastic warp threads (3) is covered by at least one first cover thread having a number of turns / meter greater than or equal to 720 turns / meter, and / or tension exerted on one at least of said first elastic warp threads (3) greater than or equal to 10 cN.