FR3135392A3 - Pelvic thermotherapy splint - Google Patents

Abstract

The invention relates to a thermotherapy splint comprising a sheath (1) incorporating a gel with suitable thermal properties, with a rectangular flat geometry arranged to allow its arrangement on a part of the wearer's pelvis, said splint further comprising an abdominal strap for maintaining said sheath on said pelvis part, comprising a central portion for the back of the wearer bordered on either side by interior and exterior portions for respectively a flank of said wearer, the interior portion covering the abdomen , the outer portion superimposed on said inner portion, being provided with fixing means arranged to cooperate with complementary means formed on said inner portion, in order to allow their association at the level of said abdomen. Figure 1

Description

Thermotherapy splint for pelvis

The invention relates to a thermotherapy splint for a part of the body of a wearer, in particular for post-traumatic or post-operative treatment, or for sports recovery of said part of the body.

Thermotherapy splints are known comprising a sheath which is intended to be placed around the part of the body to be treated, in particular by being compressible around said part of the body, and which further integrates a gel which has thermal properties adapted to apply a thermotherapeutic treatment to said part of the body.

In particular, splints are known in which the sheath is inflatable, for example by means of a manually operated pump or a portable electronic inflation module, as taught by document FR-3 080 986, in order to inflate a chamber provided for this purpose in said sheath with a suitable inflation fluid, and thus exert a compression force of the gel on the part of the body by means of said sheath.

The invention aims to improve the prior art by proposing a splint arranged to be placed on the abdomen or part of the hip of a human wearer, thanks to holding means adapted to allow the sheath to fit the morphology of said abdomen or said part of the hip, in order to guarantee a homogeneous thermo-therapeutic treatment over the entirety of said abdomen or said part of the hip.

For this purpose, the invention proposes a thermotherapy splint for a part of the body of a wearer, said splint comprising a sheath intended to be placed around said part of the body, said sheath incorporating a gel which has suitable thermal properties to apply a thermo-therapeutic treatment to said part of the body, the sheath having a rectangular flat geometry arranged to allow its arrangement on a part of the wearer's pelvis, said splint further comprising an abdominal strap for holding said sheath on said part pelvis, said strap comprising a central portion intended to cover the lower part of the wearer's back, and bordered on either side by inner and outer lateral portions intended to each respectively cover a side of said wearer, each lateral portion having a inner edge associated with the central portion and a free outer edge, the inner portion being arranged to cover the abdomen of the wearer, the outer portion being arranged to superimpose on said inner portion, being provided with it at its outer edge fixing means arranged to cooperate with complementary means formed on an exterior face of said interior portion, in order to allow the association of said lateral portions at the level of said abdomen.

Other particularities and advantages of the invention will appear in the description which follows, made with reference to the appended figures, in which:

shows in top view a sheath of a splint according to one embodiment of the invention;

represents in front view an inflation pump adapted for the sheath of the ;

represents in front view an abdominal strap arranged to maintain and compress the splint of the on the abdomen or part of a hip of a wearer;

represents in front view a longitudinal extension piece which can be removably associated with the strap of the to increase its length according to the wearer's morphology;

,

And

each represent in a bottom view and in a partially transparent manner a sheath according to respectively an alternative embodiment of the .

In relation to these figures, a thermotherapy splint for a part of the body of a wearer is described below, in particular for post-traumatic or post-operative treatment, or for the sports recovery of said part of the body, said splint comprising a sheath 1 which is intended to be arranged around said part of the body, in particular by being compressible around said part of the body.

The sheath 1 incorporates a gel which has thermal properties adapted to apply a thermo-therapeutic treatment to the part of the body, in order to relieve, by temperature variation, pain following an injury and/or an operation. This pain can affect the joints, tendons and/or muscles, and can for example be due to contractures, aches, or even inflammation (tendinitis, etc.).

In particular, cold treatment (cryotherapy) makes it possible to reduce the diameter of blood vessels, and thus reduce swelling, hematomas and inflammations, but also to facilitate the evacuation of lactic acid after physical exercise. This treatment is therefore particularly recommended as a first-line treatment for pain and/or injuries resulting from the practice of sport, such as aches, sprains, dislocations or muscle strains.

Conversely, heat treatment dilates the blood vessels, and therefore facilitates blood circulation, but also facilitates muscle relaxation. This treatment is particularly suitable for relieving chronic muscle and/or joint pain, and can in particular be used as a second intention to treat injuries resulting from sports practice.

Advantageously, the sheath 1 incorporates a thermal gel which is suitable for both cold and hot treatments, which allows the splint to be used throughout the recovery period following trauma and/or to an operation.

• entre 10 et 25% en poids de propylène glycol en tant qu’agent thermique ;
• entre 1 et 5% en poids d’hydroxyéthylcellulose en tant qu’agent épaississant et texturant ;
• entre 0 et 3% en poids de triéthanolamine en tant qu’agent de neutralisation des carbomères et/ou agent compensateur de pH ;
• le complément en eau salée.

To do this, the thermal gel includes:

• between 10 and 25% by weight of propylene glycol as thermal agent;
• between 1 and 5% by weight of hydroxyethylcellulose as a thickening and texturizing agent;
• between 0 and 3% by weight of triethanolamine as a carbomer neutralizing agent and/or pH compensating agent;
• the salt water supplement.

The use of propylene glycol is particularly interesting, in that this component has heat transfer properties, particularly when it is in the aqueous state. In addition, the addition of a glycol to an aqueous formulation makes it possible to lower its freezing point, which makes it possible to limit the hardening of the thermal gel when it is subjected to low temperatures, for example when it is placed in a freezer for cryotherapy treatment.

In particular, the proportions of propylene glycol in the thermal gel make it possible to cool it without hardening it, which allows the splint to be used immediately after said gel has cooled, without hard areas remaining which could cause pain and/or discomfort. discomfort to the wearer.

Hydroxyethylcellulose makes it possible to modulate the viscosity of the gel, and also has film-forming properties, which makes it possible to form a protective barrier on the surface of said gel, in order to maintain for a prolonged period the thermal effects provided by said gel at the surface level. contact of the sheath 1 with the part of the body. This component also plays the role of a stabilizing agent, which stabilizes the composition of the gel and increases its shelf life.

Triethanolamine (TEA) is a basic component known for preparing gels, in that it complements the gelling action of carbomers which are generally used to thicken these formulations. This component is also particularly interesting due to its pH compensation properties.

The formulation presented makes it possible to obtain a thermal gel with a viscosity between 35,000 and 55,000 centipoises (cP) at 25°C, as well as a pH between 6 and 7. It also allows the gel to cool very quickly when placed in a freezer, with a temperature drop to -20°C after less than 5 minutes, then maintaining a temperature below 0°C for approximately 50 minutes, before stabilizing at a temperature between 17 and 18° C after about 90 minutes.

The thermal gel may also include additional components, depending on the desired properties. In particular, the thermal gel may include a coloring agent to give it an aesthetic appearance linked to its use, for example a blue color dye for use for cryotherapy purposes (cold treatment).

The splint is suitable for being placed around the pelvis of a human wearer, for example as part of recovery following an injury and/or surgery of the abdomen, part of the hip and /or a part of the thigh of said wearer. It can also be used after practicing a sporting activity that places significant strain on this part(s) of the body.

The splint can in particular be used to relieve pain with cold following injuries or trauma such as postpartum abdominal wall deficiencies, contusions and fractures of the ribs or sternum, or abdominal or hip surgery. It thus provides analgesic, anti-edematous and anti-hemorrhagic effects.

To do this, the sheath 1 has a rectangular flat geometry arranged to allow its arrangement on a part of the wearer's pelvis, such as for example the front of the abdomen, or an anterior or posterior part of a hip, as well as that possibly the anterior or posterior part of the thigh adjacent to said hip.

The thermal gel is placed in at least two compartments 2 of the sheath 1 to be compressed on the pelvic part of the wearer. Thus, the distribution of the gel around the pool part is improved, which makes it possible to apply a thermotherapeutic treatment homogeneously over the entire surface of said pool part surrounded by the sheath 1.

In relation to Figures 5a to 5c, the sheath 1, 1a, 1a', 1a'' comprises six compartments 2 of identical geometry, distributed in pairs over three rows respectively upper 3a, central 3b and lower 3c, each compartment 2 containing a portion of thermal gel. This arrangement ensures that portions of gel remain in each zone of the sheath 1, 1a, 1a’, 1a’’, regardless of the position of the wearer (standing, sitting or lying down).

In the embodiment shown, the sheath 1 comprises an envelope comprising two outer layers 4a, 4b of textile material, which are associated by seams 5 along their respective peripheries, the compartments 2 of thermal gel being formed between said outer layers.

In particular, the sheath 1 may comprise an outer layer 4b of elastane (Lycra®) soaked in polyurethane (PU) intended to come into direct contact with the part of the body, as well as an opposite outer layer 4a based on brushed mesh.

The sheath 1 further comprises at least two interior layers 6 of plastic material, for example based on a polyurethane (PU) film, which are arranged between the exterior textile layers 4a, 4b and associated at their peripheries via a strip of common weld 7, the compartments 4, 4a, 4b of thermal gel being arranged between said interior layers.

In the embodiment shown, the interior layers 6 are also associated at their peripheries with the exterior layers 4a, 4b via the seam 5 and a bonding strip 8 extending between said seam and the peripheral weld 7.

In Figures 5a and 5b, the interior layers 6 are further welded together along three lines 9 to form six substantially rectangular compartments 2 of identical dimensions, for receiving respectively a portion of thermal gel.

According to a first variant, the compartments 2 are arranged to each receive a portion directly in the form of gel ( ). To do this, the interior layers 6 can be reinforced, for example by internal coating with a suitable product, to be able to receive gel in a sealed manner, in particular to avoid leaks of gel between two compartments 2 and/or outside the sheath 1, 1a.

According to a second variant, the compartments 2 are arranged to each receive a pocket 10 in which a portion of thermal gel is packaged ( ). The pockets 10 are made of a waterproof and sufficiently resistant material to be able to deform under the effect of the pressure exerted by the sheath 1, 1a' when it is compressed around the pool part, while avoiding their rupture and the gel leaks inside their respective compartment 2.

In particular, each compartment 2 can have a closable opening formed in the sheath 1a', for example by occasional interruption of the seams 5 and the bonding and welding strips 7, 8, in order to allow the insertion and removal of a pocket 10 of thermal gel in said compartment.

There represents a third variant embodiment of the invention, in which the interior layers 6 are welded together only at their peripheries, so as to form a space 11 for receiving six pockets 10 in each of which is packaged a portion of thermal gel, said pockets each forming a compartment 2 of thermal gel within said space.

Advantageously, in this third variant, the space 11 can have at least one closable opening formed in the sheath 1, 1a'' to allow the insertion and removal of at least one pocket 10 of thermal gel in said space , for example to replace said pocket with a previously cooled or reheated pocket, depending on the treatment chosen.

For this purpose, openings can be formed locally at the peripheral junction 5, 7, 8 of the layers 4a, 4b, 6, for example by means of Velcro® type hook-and-loop devices, in order to allow removal and insertion through said gel pocket openings 10 in the portion of the space 11 facing.

The sheath 1 may further comprise an inflation chamber formed above the compartments 2 for conditioning the thermal gel, in order to ensure the compression of said gel around the pool part by inflation of said chamber.

For this purpose, in the embodiment shown, the sheath 1 comprises an external valve 12 for inflating the chamber which comprises a means 13 for connection to a manual inflation device 14 ( ), as well as a switch 15 to selectively open and close the communication of said chamber with the outside.

The inflation device 14 comprises a tube 16 equipped at one end with a nozzle 17 for its watertight connection to the inflation valve 12, the second end of said tube being provided with a deformable pump 18 on which a user must apply pressure successive manual operations to inject air into the chamber via said inflation valve.

The inflation chamber is formed between the outer textile layer 4a opposite the compartments 2 for conditioning the thermal gel and the adjacent inner layer 6, the inflation valve 12 being arranged on said outer layer. In particular, the sheath 1 may comprise a third inner layer of polyurethane film placed between the outer textile layer 4a and the adjacent inner layer 6 delimiting the gel compartments 2, said third layer being equipped with the inflation valve 12.

The splint further comprises an abdominal strap 19 for maintaining, and possibly compressing, the sheath 1 on the pelvic part, said strap comprising a central portion 20 intended to cover the lower part of the wearer's back, and bordered on both sides on the other hand, by inner 21 and outer 22 side portions intended to each respectively cover a side of said carrier.

Each lateral portion 21, 22 has an internal edge 21a, 22a associated with the central portion 20 and a free external edge 21b, 22b, the interior portion 21 being arranged to cover the abdomen of the wearer, the exterior portion 22 being arranged to superimpose on said interior portion, being provided at its outer edge 22b with fixing means 23 arranged to cooperate with complementary means 24 formed on an exterior face 25 of said interior portion, in order to allow the association of said portions lateral at the level of said abdomen.

The abdominal strap 19 comprises two rigid dorsal ribs which each extend transversely in a housing 26 formed along respectively an internal edge 21a, 22a, as well as two flexible abdominal ribs which each extend transversely in a housing 27 formed along of respectively an external edge 21b, 22b.

The ribs make it possible to stiffen the strap 19 transversely, in order to guarantee their flat arrangement around the wearer's pelvis while limiting the risks of rotation of said strap around said pelvis. In particular, the abdominal stays are made of a more flexible material than the dorsal stays to allow the portions 21, 22 to easily fit the wearer's abdomen, whatever their morphology.

The outer portion 22 is equipped with three gripping strips 23, for example equipped with Velcro® type hooks, which extend longitudinally from its outer edge 22b. In particular, the strap 19 comprises a section 28 which extends longitudinally the external edge 22b, and on the free edge of which the gripping strips 23 are associated.

The strips 23 are intended to engage complementary textile means 24 formed on the exterior face 25 of the interior portion 21. For this purpose, the exterior face 25 can in particular be covered at least in part, and preferably in its entirety. , a layer 24 of suitable textile material, for example brushed mesh, on which the bands 23 can grip to allow the strap 19 to be attached around the wearer's pelvis.

In relation to the , the splint further comprises a piece 29 for longitudinal extension of the abdominal strap 19, which can be optionally and removably associated with said strap if the wearer has a large build.

This part 29 has a rectangular geometry with a first lateral end provided on its exterior face 30 with fixing means 31 intended to cooperate with the gripping strips 23 of the exterior portion 22, as well as a second opposite lateral end from which gripping strips 32 extend longitudinally to cooperate with the complementary means 24 formed on the exterior face 25 of the interior portion 21.

In particular, the exterior face 30 of the extension piece 29 can be covered, at least at the level of the end opposite the strips 32, or even in its entirety, with a textile layer 31 of brushed mesh, similar to the layer 24 of the interior portion 21, in order to allow the Velcro® hooks fitted to the strips 23 to be attached to it.

In relation to the , the sheath 1 has a gripping strip 33, for example of the Velcro® type, which extends along an upper edge 34 of the exterior face of said sheath, in particular by being formed on the exterior layer 4a of said sheath, the valve 12 being arranged near the lower edge 35 opposite said upper edge.

The interior portion 21 of the abdominal strap 19 also has a complementary strip which extends transversely on its interior face (opposite to the face shown on the ), and near its external edge 21b, in order to be able to maintain and compress the sheath 1 on the wearer's abdomen.

For this purpose, the interior portion 21 has a panel 36 which extends in the longitudinal extension of its external edge 21b, and on an interior face of which is associated a brushed mesh textile layer, similar to the layers 24, 31 covering the faces respective exteriors 25, 30 of said interior portion and of the extension piece 29, in order to allow the association on it of the gripping strip 33 carried by the sheath 1.

In particular, the sheath 1 and the strap 19 have dimensions arranged to allow the wearer or a third person to completely cover the inflation valve 13 when he associates the sheath 1 to the strap by aligning its upper edge 34 with the edge upper of said strap. This arrangement proves particularly advantageous in the case where the sheath 1 must be placed against the abdomen, because it makes it possible to dissuade the wearer or the third person from inflating the sheath 1, to the extent that excessive compression is contraindicated. in most cases of abdominal injuries and/or surgeries.

The strap 19 and the sheath 1 are also arranged to be able to hold and/or compress the sheath 1 simultaneously around a part of a hip of the wearer and a part of the thigh adjacent to said hip. To do this, the wearer or a third person can place the sheath 1 on the front or the back of a hip, depending on the location of the pain, so that the lower part of the sheath 1 comes opposite from the top of the adjacent thigh, then compress the upper part of said sheath on said hip by surrounding it with the strap 19.

The splint further comprises an additional strap (not shown) intended to surround the thigh of the wearer to maintain and/or compress on it the lower portion of the sheath 1 extending opposite it.

To do this, the thigh strap may comprise two free ends each provided with fixing means, for example Velcro® type gripping strips, intended to cooperate with complementary means formed on an exterior face of the sheath part 1 surrounding the thigh. In particular, the outer layer 4a of the sheath 1 can be covered at least in part or in its entirety with a brushed mesh textile layer, in order to allow the gripping ends of the thigh strap to be attached to it.

Advantageously, to be able to be adapted to a wearer of large build, the splint can comprise an additional part for longitudinal extension of the thigh strap, said part having two ends provided respectively with complementary means for its association with a gripping strip of said thigh strap and a gripping means similar to the other strip of said strap, to allow their respective association on the outer layer 4a of the sheath 1.

To use the splint for cryotherapy purposes, sheath 1 can be placed in a freezer, at a temperature between -22°C and -18°C, for approximately 8 hours. For this purpose, the splint can be marketed with an airtight bag adapted to receive the sheath 1, in order to preserve said sheath from humidity and to avoid any contact with other products, in particular food, which can be stored simultaneously in said freezer.

In the case where the splint is equipped with removable gel pockets 10, said pockets can be extracted from the sheath 1 to be placed in the freezer for the recommended duration and temperature range, in particular by being placed in the airtight bag described previously.

When using the splint, the sheath 1 can be removed from the freezer, then massaged over its entire surface, in order to guarantee good distribution of the gel in its compartments 2. Such an operation can also be carried out with a sheath 1 equipped removable gel pockets 10, by replacing said pockets in their compartments 2 or in the space 11 provided for this purpose, in order to avoid direct contact of said refrigerated pockets with the hands of the wearer or a helping third party .

The sheath 1 is then placed against the pelvis part of the wearer, then held on said pelvis part by means of the abdominal strap 19.

To use the splint on his abdomen, the wearer or a third party assisting places said sheath against the interior face 25 of the interior portion 21, aligning the upper edge 34 of said sheath with the upper edge of the abdominal strap 19, and attaches the gripping strip 33 on the inside of the panel 36 to secure said sheath to said strap.

Then, the wearer or the helping third party places the sheath 1 against the abdomen, then positions the dorsal portion 20 of the strap 19 against his back, before folding down and fixing the outer portion 22 on his abdomen by means of the gripping strips 23.

In particular, if the corpulence of the wearer requires it, said wearer or the assisting third party can first increase the length of the strap 19 by means of the part 29, using the gripping strips 32 of said part for the final fixing of said strap around the wearer's abdomen.

At the end of these operations, the sheath 1 rests against the wearer's abdomen with its external valve 12 completely covered by the abdominal strap 19, in order to dissuade said wearer from applying additional compression by inflating said sheath.

To use the splint on his hip, the wearer or a third-party caregiver places the sheath 1 against the front or the back of said hip, depending on the location of the pain, so that a lower part of said sheath comes into contact. look at the top of the thigh adjacent to said hip, then immobilizes said sheath on said hip by means of the abdominal strap 19, possibly equipped with its extension piece 29 if necessary.

Then, the wearer or the assisting third party immobilizes the lower part of the sheath 1 against the thigh by means of the adapted thigh strap (not shown), possibly equipped with a suitable extension piece if necessary.

At the end of these operations, the sheath 1 rests against the wearer's hip and thigh with its valve 12 accessible from the outside, in order to allow the wearer or the assisting third party to apply additional compression by inflating the chamber of said sheath by means of said valve and the inflation device 14 shown in .

To avoid prolonged exposure to cold, sheath 1 can remain in place against the pool part for a maximum period of 20 minutes.

At the end, the wearer or the third party caregiver can remove the sheath 1, in particular to place it back in the freezer for a subsequent treatment session.

Advantageously, the wearer can continue to wear the abdominal strap 19 even in the absence of the sheath 1, in order to limit the movements of his pelvis outside of thermo-therapeutic treatments, and thus to improve healing and recovery. of said carrier.

Claims (14)

Thermotherapy splint for a part of the body of a wearer, said splint comprising a sheath (1, 1a, 1a', 1a'') intended to be placed around said part of the body, said sheath incorporating a gel which has thermal properties adapted to apply a thermo-therapeutic treatment to said part of the body, said splint being characterized in that the sheath (1, 1a, 1a', 1a'') has a rectangular flat geometry arranged to allow its arrangement on a part of the wearer's pelvis, said splint further comprising an abdominal strap (19) for holding said sheath on said part of the pelvis, said strap comprising a central portion (20) intended to cover the lower part of the wearer's back, and bordered on either side by inner (21) and outer (22) lateral portions intended to each respectively cover a side of said carrier, each lateral portion (21, 22) having an internal edge (21a, 22a) associated with the portion central (20) and a free outer edge (21b, 22b), the inner portion (21) being arranged to cover the wearer's abdomen, the outer portion (22) being arranged to superimpose on said inner portion , being provided at its outer edge (22b) with fixing means (23) arranged to cooperate with complementary means (24) formed on an outer face (25) of said inner portion, in order to allow the association of said lateral portions at the level of said abdomen. Thermotherapy splint according to claim 1, characterized in that the abdominal strap comprises two rigid dorsal ribs which each extend transversely in a housing (26) formed along respectively an internal edge (21a, 22a), as well as two ribs flexible abdominal muscles which each extend transversely in a housing (27) formed along respectively an external edge (21b, 22b). Thermotherapy splint according to one of claims 1 or 2, characterized in that the external portion (22) of the abdominal strap (19) is equipped with gripping strips (23) which extend longitudinally from its external edge (22b) , said bands being intended to engage complementary textile means (24) formed on the exterior face (25) of the interior portion (21) of said abdominal strap. Thermotherapy splint according to claim 3, characterized in that it further comprises a part (29) for longitudinal extension of the abdominal strap (19), said part having a rectangular geometry with a first lateral end provided on its exterior face (30) fixing means (31) intended to cooperate with the gripping strips (23) of the exterior portion (22), as well as a second opposite lateral end from which gripping strips (32) extend longitudinally to cooperate with the complementary means (24) formed on the exterior face (25) of the interior portion (21). Thermotherapy splint according to any one of claims 1 to 4, characterized in that the sheath (1, 1a, 1a', 1a'') has a gripping strip (33) which extends along an upper edge (34) of the outer face of said sheath, the inner portion (21) of the abdominal strap (19) having a complementary strip which extends transversely on its inner face and near its outer edge (21b), in order to be able to maintain said sheath on the wearer's abdomen. Thermotherapy splint according to any one of claims 1 to 5, characterized in that the abdominal strap (19) and the sheath (1, 1a, 1a', 1a'') are arranged to be able to hold the sheath (1, 1a , 1a', 1a'') simultaneously around a part of a hip of the wearer and a part of the thigh adjacent to said hip, said splint further comprising an additional strap intended to surround said thigh to hold it on the portion of the sheath (1, 1a, 1a', 1a'') extending opposite. Thermotherapy splint according to claim 6, characterized in that the thigh strap comprises two free ends each provided with fixing means intended to cooperate with complementary means (4a) formed on an exterior face of the part of the sheath (1, 1a, 1a', 1a'') surrounding the thigh. Thermotherapy splint according to claim 7, characterized in that it comprises an additional part for longitudinal extension of the thigh strap, said part having two ends provided respectively with complementary means for its association with a means of fixing said strap and a fixing means similar to the other means of fixing said strap to allow their respective association on the complementary means (4a) of the sheath (1, 1a, 1a', 1a''). Thermotherapy splint according to any one of claims 1 to 8, characterized in that the gel is placed in at least two compartments (2) of the sheath (1, 1a, 1a', 1a'') to be placed around the pelvic part of the wearer. Thermotherapy splint according to claim 9, characterized in that the sheath (1, 1a, 1a', 1a'') comprises six compartments (2) distributed in pairs over three rows respectively upper (3a), central (3b) and lower (3c), each compartment (2) containing a portion of thermal gel. Thermotherapy splint according to any one of claims 1 to 10, characterized in that the gel comprises:

• between 10 and 25% by weight of propylene glycol as thermal agent;
• between 1 and 5% by weight of hydroxyethylcellulose as a thickening and texturizing agent;
• between 0 and 3% by weight of triethanolamine as a carbomer neutralizing agent and/or pH compensating agent;
• the salt water supplement.

Thermotherapy splint according to any one of claims 1 to 11, characterized in that the sheath (1, 1a, 1a', 1a'') is compressible around the part of the body, the abdominal strap (19) being arranged to ensure said compression. Thermotherapy splint according to claim 12, characterized in that the sheath (1, 1a, 1a', 1a'') comprises an inflation chamber to ensure the compression of the gel around the pelvic part of the wearer by inflation of said chamber . Thermotherapy splint according to claim 13, characterized in that the sheath comprises an external valve (12) for inflating the chamber which comprises means (13) for connection to a manual inflation device (14), said valve further comprising a switch (15) for selectively opening and closing the communication of said chamber with the outside.