EP4305927A1

EP4305927A1 - Heatable bandage

Info

Publication number: EP4305927A1
Application number: EP21847735.4A
Authority: EP
Inventors: Marcin Meyer; Meike BAUMGARTEN; Sina Borczyk; Pulkit Mishra; Sabrina KOPF
Original assignee: KOB GmbH
Current assignee: KOB GmbH
Priority date: 2021-03-12
Filing date: 2021-12-30
Publication date: 2024-01-17
Also published as: WO2022189032A1; DE102021106124A1

Abstract

The invention relates to a heatable bandage (10) comprising a textile woven main material (12) or a main material (12) made of knitted fabric, said main materials comprising non-conductive threads (54, 56, 61, 63, 74) and conductive threads (50, 52, 65, 72, 82, 84), the conductive threads (50, 52, 65, 72, 82, 84) being incorporated into the main material (12) during the manufacture of said material.

Description

Title : Heating bandage

description

The invention relates to a heating bandage for the human and/or animal body, comprising a textile, woven base material or base material made of knitted goods, comprising non-conductive threads and conductive threads.

In principle, various systems for heat therapy are known. For example, electric blankets or hot-water bottles, etc. are used, but these severely limit the mobility of the user. Alternatively, more mobile applications such as heat patches are already known. However, these have the disadvantage that they only have a small area coverage and the duration of heating is limited. They can also cause skin irritation and burning sensations, as the heat from the heat patches is caused by a chemical reaction. In addition, heating fabrics from GB 2395 723

A1, which describes a conductive circular textile fabric that is pressed flat and embedded in a foam.

Furthermore, heat or heating bandages or textiles are known, e.g. from the sports sector, e.g. from Lenz Products, Schwarzach, Germany, with heat conductors being applied to a type of bandage, e.g. in the form of a kidney belt.

Based on this, there is a need for flexible, heatable bandages that can be used as required and offer flexible handling.

This object is achieved in that the conductive threads, which at least partially serve to generate heat, are introduced into the base material during its production process. In this way, a heating bandage can be provided that can be produced in almost any dimensions, both in terms of length and width.

In addition, the bandage is easier to manufacture because the bandages are used for heating or heat generation

Threads are immediately introduced into the woven or knitted fabric and no additional further steps, such as the following Pulling in or applying and eg gluing or otherwise fixing heating filaments or heating wires is necessary. This also eliminates the risk of failures that can result from loosening the attachment points between the woven or knitted fabric and conductive threads, etc.

Base material made of knitwear is to be understood and includes both warp-knitted and knitted base materials. It is particularly preferred if the heating bandage has a length that is dimensioned such that the heating bandage can be placed once around the body area to be heated. Alternatively, however, it is also conceivable to provide a heating bandage that can be placed or wrapped several times around a body region to be heated and fixed there. The width of the heating bandage is preferably 4-30 cm, in particular 4-20 cm and preferably 5-10 cm. A width of 5 cm or 10 cm is particularly preferred. In particular, the bandage has a width of less than or equal to 20 cm and more preferably less than or equal to 10 cm.

Furthermore, the length of the heating bandage can preferably be between 5 and 100 cm, in particular 10 and 70 cm. The heating bandage particularly preferably has a length of 10 cm to 50 cm, in particular 10 to 30 cm. The length is in the unstretched state. The length of the heating bandage can vary depending on the application. The heating bandage can preferably once around the be wrapped around the part of the body to be treated, but in principle several wraps/tours are also possible. For this purpose it can be provided that insulated electrically conductive yarns are used or subsequently insulation is applied to the base material of the heating bandage, for example by a

coating is applied. Alternatively, the base material of the heating bandage can also be bordered by additional textile layers, e.g. a conventional bandage.

In particular, it can be provided that the conductive threads serve to generate heat and these are drawn in as weft and/or warp threads. In particular, in the case of knitted fabrics, in particular crocheted or knitted fabrics, provision can be made for the electrically conductive threads to be introduced into the knitted fabric as an additional weft thread during its manufacture.

In the case of a woven fabric, it can be provided that the conductive threads only form part of the warp or weft threads. For example, it can be provided that a conductive thread is inserted as a weft, with a spacing being created between each weft insertion of conductive thread and the wefts made of non-conductive threads in between. Depending on the woven or knitted fabric, it may be necessary for this additional weft insertion to be guided by hand, but mechanical guidance is preferred. The thread is carried along the selvage between the insertions when the non-conductive yarns are being inserted. An S-shaped curve then develops in the conductive weft thread in the bandage. This S-shaped curve can spread over the extend over the entire width of the woven base material or the knitted fabric base material or only over a part thereof. If the conductive weft thread extends only partially across the width of the base material, it or these threads can preferably be arranged in the middle area of the base material. However, an arrangement in the edge area, ie in the direction of the selvedges running in the longitudinal direction, is also possible. In principle, several conductive weft threads can also be drawn in.

If conductive warp threads are provided, they can be arranged in a sequence with non-conductive warp threads, for example two non-conductive warp threads can be used between two conductive warp threads. Furthermore, it is particularly preferred to introduce elastic threads and in particular elastic conductive threads into the woven or knitted fabric. In addition, for the design of the heating bandage as an elastic fabric or knitted fabric, the non-conductive threads can also be designed to be elastic or at least partially elastic. The elasticity can be achieved via elastomeric threads, which can be wrapped with a conductive material in order to provide conductivity, in particular windings made of polyester or enameled copper wire can be provided, the core of which consists in particular of elastane. Alternatively, cotton-elastic threads can also be used, which have been appropriately treated to produce elasticity. The extensibility of The heating bandage is preferably in the range of up to 200%, in particular up to 100% and particularly preferably between 10-20%, provided an elastic design is selected. The stretchability is measured according to DIN EN ISO 13934-1:2013

Cotton is particularly preferred as threads for the non-conductive threads, since cotton has good skin compatibility, provided the desired elastic properties of the bandage permit this. Synthetic yarns, e.g. from

Polyamide or polyester with a silver coating, threads made of polyester and enameled copper wire and elastic covered yarns made of elastane with windings made of polyester and enameled copper wire. Furthermore, combinations of the conductive and non-conductive threads mentioned are also possible. Furthermore, conductive threads can be used, in which a textile thread, e.g. a polyester or polyamide thread, has been twisted with a wire. The threads can be insulated or non-insulated yarns, with insulated yarns allowing the bandage to be wrapped several times, even overlapping one another.

In addition to the choice of material, the threads can also be selected based on their resistance. It can be provided that in the area of heat emission

Heating bandage the conductive threads have a higher resistance than in areas that are used for electrical conduction. The term thread is to be understood here synonymously with yarn. The term thread can also be understood to mean groups of threads or bundles of threads, i.e. threads combined into several, which have the same course as warp or weft threads. These can be designed as twisted yarns or as a sheet of threads running essentially parallel.

The heating bandages are preferably designed as narrow textiles. Such narrow textiles can be produced in the form of fabrics, for example, on a shuttle loom or a needle ribbon loom. If production takes place in series, the weft thread, in particular a separate weft thread, can no longer be fed in as a conductive thread manually, but via a weft color control. A jacquard machine can be used as a device. In the case of small series or individual pieces, manual feeding of a conductive weft thread is also conceivable. A gallon crochet machine, for example, can be used to produce a narrow textile as a knitted fabric. If different conductive threads are used as warp and/or weft threads, threads that differ in particular in terms of material and/or resistance can be selected. In particular, if it is provided that woven electrodes are provided on the longitudinally spaced end regions of the heating bandage, which in particular comprise electrically conductive weft threads, a different material or a different Resistance to be selected versus conductive threads in the area between the end areas.

In particular, according to one embodiment, it is provided that the heating bandage has woven electrodes at its end regions, which can extend in the longitudinal direction over up to one third of the length depending on the length of the bandages, but preferably have less extension in the longitudinal direction, which can be contacted via electrical lines. The conductive threads for heat generation can then only extend between the two end areas, eg in the form of weft threads or, alternatively or additionally, eg by conductive warp threads, with conductive warp threads for heat generation being preferred, extend into the end areas. It can be provided that threads that form the woven electrodes or are used in some other way for electrical contacting have a lower resistance than threads that are used to generate heat. Due to the crossing points provided that both conductive weft threads, especially in the area of woven electrodes, and the conductive warp threads, which can run over the entire length of the fabric, the current is conducted through the where the conductive warp and the conductive weft touch entire bandage. A configuration in which conductive warp threads for heat generation and conductive weft threads are provided in the woven electrodes is particularly preferred. According to an exemplary embodiment, provision can be made for the electrically conductive threads to be provided between the end regions, which threads have a greater resistance than the electrically conductive threads in the end regions. The threads that provide the heat can be both weft threads and warp threads. The threads for the electrical contacting are essentially provided as weft threads in the end areas. Depending on the design, weft threads for electrical contacting or for providing heat can also be provided, which do not extend over the entire width of the base material. In particular, the thread or threads for providing the heat output can also only extend over a central area between the two longitudinal side edges or lateral areas of the bandage. This can be the case in particular with a knitted fabric that is produced on a galloon crochet machine.

Conductive threads with a resistance of 3-100 W/m can be used as a suitable resistor, for example for the electrical supply lines or woven electrodes. For threads that serve to provide heat, the resistance can be up to 500 W/m. If yarns with different resistances are used, it can be advantageous to use high-impedance yarns for generating and conducting heat and low-impedance yarns for conducting electricity. The difference in resistance is more important than the actual resistance. This is to ensure that in the areas with lower resistance no heat generation takes place, but only a transmission of the current in order to achieve a heating effect only in the areas with higher resistance. It can preferably be provided that the bandage is connected to electronics and/or a power supply via the electrically conductive threads or at least some of them, in particular via the woven electrodes. The power supply and / or the electronics can be mobile, ie batteries or rechargeable batteries or another

Power storage (power bank) carried out, which are included in a housing. The housing can then be accommodated, for example, in a pocket that is provided or can be attached to the bandage. Alternatively, the housing can also have a clip, a buckle or

Snaps, etc. can be attached to the bandage.

The electronics or circuit may include a printed circuit board, a microcontroller, DC/DC converters, a transistor, e.g. a MOSFET (Metal-Oxide Semiconductor Field-Effect Transistor), and/or resistors, the

heating bandage is the consumer. Furthermore, a communication module can preferably be provided, e.g. Bluetooth, for controlling the heating bandage, e.g. via a mobile application on a mobile phone or other device heat patches is not only of short or at least limited duration. Others too Fastenings are within the scope of the present invention. The housing can have dimensions of up to 10 cm in length, in particular up to 7 cm in length, in particular up to 5 cm in length. The width can be up to 7 cm, in particular up to 5 cm. The height of the housing can be up to 5 cm, in particular up to 3 cm. The weight of the electronics including the housing can be up to 50g, in particular up to 30g and in particular up to 25g. In this case, small dimensions and weights are desired because of mobility.

The electrical connection of electronics and/or a power supply to the woven electrodes or other electrical connections on the heating bandage can be made, for example, via snap fasteners in particular. However, other detachable or non-detachable connections are also conceivable, such as plug connections or crimp connections, which can be riveted to the heating bandage, for example. In principle, however, standard non-detachable connections are also conceivable.

The achievable and/or desired temperature of the heating bandage, to which it should heat up, is 25-45°C, in particular 28-42°C.

It can be provided that the bandage has a temperature sensor. This can likewise be permanently or detachably connected or connectable to the bandage. The temperature sensor can in particular interact with a temperature controller and control and/or regulate the temperature either on one Allow default or a desired/selectable value.

In particular, it is provided that the electronics have a Bluetooth interface so that the electronics can be controlled, for example, via a remote control, e.g. a mobile phone. In particular, the heating bandage can be switched on and off and, if necessary, the

Temperature setting done in this way. For example, a mobile phone can act as a control unit via an app. A user can then set the temperature interactively via their smartphone.

A design is particularly preferred in which the base material is provided as a fabric and electrically conductive warp threads are inserted into the base material, which alternate with non-conductive warp threads in a predetermined sequence. For example, a conductive warp thread can follow every two non-conductive threads. In addition, an electrically conductive weft thread is woven into the end areas of the bandage, with preferably all weft threads in the end areas of the heating bandage being electrically conductive. The energy is fed into the bandage through these electrically conductive weft threads. The conductive warp threads have a greater resistance than those in the end areas of the bandage to form a woven one

Electrode arranged electrically conductive weft threads. Electrically conductive weft threads are preferably made of the same material, in particular silver-coated Polyamide yarns, like the electrically conductive warp threads. In particular, only two different electrically conductive threads are used. Another preferred embodiment of the invention relates to a design in which the warp threads are electrically non-conductive and one or more electrically conductive weft threads are drawn into the fabric in addition to the non-conductive weft threads and are carried between the wefts on the selvage. The electrical contacting at the end areas can take place via woven electrodes or in some other way.

A further preferred variant provides a knitted fabric as the base material, this being produced by knitting or warp knitting. A warp knitting machine, e.g. a gallon crochet machine, creates an additional

Introduced weft thread, which is designed to be electrically conductive and is used for heat dissipation. The knitted fabric can also be designed as a knitted fabric according to a further alternative embodiment. According to one embodiment, the heating bandage can be part of a heatable bandage, which consists of the heating bandage and a base bandage, with the base bandage not being heatable. The heating bandage and the base bandage can be firmly connected to each other to form the heatable bandage, in particular the base bandage can connect to the heating bandage in one or both directions. Alternatively, the base bandage can also extend over the heating bandage in the longitudinal direction. the The width of the base bandage can correspond to the width of the heating bandage. In particular, if the base bandage extends over the heating bandage in the longitudinal direction, it can also be wider or narrower. The length of the basic bandage is arbitrary and can be adjusted depending on the application.

According to a further exemplary embodiment, the heating bandage can also be accommodated between two or more layers of a base bandage.

The invention will be explained in more detail below with reference to a drawing, showing:

Figure 1 is a schematic representation of the heating bandage with the associated electronics and control unit,

Figure 2 to Figure 5 depictions of the various tissue or

Knitted fabrics of woven base material or base material made from knitted goods, here a knitted base material.

FIG. 1 shows the heating bandage, which is provided with the reference number 10 here. The heating bandage 10 comprises a textile, woven base material 12 or a base material 12 made of knitted fabric, in particular a knitted base material 12, which includes both conductive and non-conductive threads. In FIG. 1, a woven electrode 16a and 16b is provided at each of the longitudinal ends 14 or end regions 14 spaced apart in the longitudinal direction, with the heating bandage essentially extending between them. In addition, in the area of the electrodes 16 a and 16b connecting elements are provided, via which electronics 28 and/or a power supply 22 can take place and which are used for electrical contacting. These can be implemented in particular via conductive snaps 18, which are connected to further snaps 20 and latch with them in order to enable contacting 33, 35 with electronics 28 and a battery, which is provided with reference number 22 here. The illustration is not true to scale. Electronics 28 and battery 22 can be arranged in a common housing 24, the battery 22 being shown schematically, as well as the electronics 28. In addition, a Bluetooth symbol 30 symbolizes that the electronics 28 are Bluetooth-enabled. The housing 24 can then be fastened in a pocket (not shown) or in some other way on or in the vicinity of the heating bandage 10 and is carried along by the wearer of the heating bandage 10 in this case. In addition, the heating bandage 10 has a temperature sensor 32 which is arranged directly on the heating bandage 10 and is directly connected to the electronics 28 via a line 34 . In this way, the heat can be controlled interactively via a wearer of the heating bandage 10 using an app 36 on a mobile phone 38 .

In addition, the signal profile is identified in the figure by means of arrows. The electronics receive a signal marked 40 from the app 36 of the mobile phone 38 via Bluetooth 30, which is transmitted via the arrow 42 as a signal to heat up the bandage 10 is initiated and passes through the bandage 10 (arrow 44) in the form of an electric current, which provides for the generation of heat. The further flow of current is indicated by the arrows 42, 45 and 46. In addition, the temperature is recorded via the sensor 32 and also fed back into the electronics 28, so that the selected temperature can then be compared with the desired temperature in order for the electronics 28 to carry out a regulation if necessary. The signal flow is marked with the reference number 48 here. The temperature range in which the heating bandage 10 can heat up is preferably between 28° and 42°.

The heating bandage 10 as such is shown in more detail in FIG. Here, a heating bandage 10 is shown schematically, but its length does not correspond to the actual length. Woven electrodes 16a and 16b are again provided in the region of the two end regions 14, the electrodes 16a,b and the entire base material 12 being produced as woven material in this variant. In the area of the woven electrodes 16a, 16b, with the snap fastener connections or alternative connections not being shown, a conductive yarn is provided as a weft 50, this yarn having in particular a low resistance of, for example, 40 W/m.

The warp threads 52, which extend through the woven electrodes 16a, 16b and the area in between, are also partly conductive threads 54 with a high resistance up to 500 W/m, alternating with non-conductive warp threads made of cotton 56 are arranged. One conductive warp thread 54 and two cotton warp threads 56 are alternately provided.

Alternatively, it can also be provided that a conductive warp thread 54 follows more or fewer than two non-conductive cotton warp threads 56 .

A non-conductive cotton thread 58 is provided as a weft thread in the area between the woven electrodes 16a and 16b.

As conductive yarns 50 and/or 54, for example, silver-coated polyamide or polyester yarns, as well as elastic wrapped yarns with a core made of elastane and windings made of polyester and enamelled copper wire, can be considered. Silver-coated polyamide yarns, which can differ in terms of their resistance, are particularly preferred here.

By using a conductive yarn with low resistance, the latter is highly conductive and is therefore the preferred choice for manufacturing the woven electrodes. Due to the crossing points of the two conductive yarns in the area of the electrodes, where the conductive warp 52 and the conductive weft touch, the current is conducted through the entire bandage.

The heating bandage 10 according to FIG. 2 was woven on a ribbon loom. A further embodiment is now shown in Figure 3 and is also woven on a ribbon loom. The tissue as such is not conductive here. For contacting the end areas 14, either woven electrodes can be provided again, as in FIG. In a heating bandage 10 according to the variant of FIG. 3, a conductive thread 65 is also inserted in the weft, but not with each weft insertion, but in such a way that there is a distance between each weft insertion of the conductive yarn 65. The wefts 63 in between are continued regularly and inserted through a cotton yarn. The conductive yarn 65 is therefore located in the weft in addition to the actual weft insertion 63 made of cotton and is preferably also threaded in by machine or, less preferably, by hand. If the conductive thread is not being fed in, it is carried along along the selvedge 67 . This creates an S-shaped curve within the bandage. In this way, weft thread control can be simulated. Alternatively, automated production without canine intervention is also possible.

The warp threads are only provided with the reference number 61 here. The regular cotton wefts are provided with the reference number 63 and the additional weft insertion made of electrically conductive yarn with the reference number 65. The reference number 67 designates the area of the lateral guide on the selvedge. They are different Configurations are possible, for example with a conductive thread 65 or with two conductive threads 65, which can be guided as a double thread. The conductive threads can be introduced in such a way that they each have a distance of one or two centimeters between the individual conductive weft insertions 65 . Two or more of the conductive weft threads can also be inserted, which are each guided in an S-curve on the selvedge and in the fabric.

The resistance can be selected differently. Advantageous resistances can be 4.3 W/m or even 9 W/m. Threads can be used in which a textile thread, e.g. a polyester or polyamide thread, has been twisted with a wire.

A further alternative design of the heating bandage is shown in FIG. 4. In this case, a conductive thread 72 is also carried along as a weft insertion. However, the production of the base material 12 takes place via a

Warp knitting machine, so that the base material 12 is a knitted fabric.

Similar to the design according to FIG. 3, the conductive thread 72, here again a hybrid thread with preferably 9 W/m, is carried along as weft insertion. In FIG. 4, unlike in FIG. 3, a partial weft insertion is now provided, which does not lead over the entire width, ie from the left to the right edge of the knitted fabric, but instead is only entered in the middle field. In the case of this variant, the conductive thread 72 runs in the middle third, which makes up about 20 of 60 rows 74 of stitches. In principle, however, entries over the entire width or a smaller width are also possible. In the present case, it runs lengthwise along about 10 stitches before it is inserted again. The thread 72 is enclosed by the connection of the stitches of a wale and integrated in this way into the knitted fabric.

FIG. 5 now describes an elastic version of the design from FIG. Active feeding of the warp threads is advantageous when processing elastic yarns.

A conductive elastic wrapped yarn is used here as well as a conductive warp yarn 82. The conductive weft yarn 84 in the area of the woven electrodes 16a and 16b is non-elastic. A low-impedance yarn is inserted as weft 84 at the beginning and at the end in order to create woven electrodes 16a,b.

A high-impedance yarn 82 is part of the warp and runs longitudinally through the bandage 10. Other non-conductive warp threads are identified by the reference numeral 81. The electronics, which are not shown here, are in turn located on a printed circuit board, which is arranged in a housing as in FIG. Here, too, there is preferably--as in all the configurations of the base material 12 shown--again a temperature sensor in the Heating bandage 10 and measures the current temperature there. A feedback loop, as described in relation to FIG. 1, enables temperature regulation that is programmed into the program of the microcontroller. The heating bandage 10 can be supplied with power via a power bank, for example.

In addition to the possibility of connecting via a push button adapter, crimping or the like is also possible here, with crimp connectors being riveted to the bandage 10, at the other end of which a connecting cable is plugged.

In the present way, a heating bandage 10 is created that offers advantages in production because additional work steps for applying or inserting the conductive threads can be omitted and at the same time enables mobile use.

Claims

patent claims

A heating bandage (10) comprising a textile, woven base material (12) or a base material (12) made of knitwear, in particular a knitted base material

(12) comprising non-conductive threads

(54,56,61,63,74) and conductive threads (50,52,65, 72,82,84), characterized in that the conductive threads (50,52,65,72,82,84) in the Base material (12) are introduced in the manufacturing process.

2. Heating bandage according to claim 1, characterized in that the conductive threads (50, 52, 65, 72, 82, 84) are part of the warp threads (52, 82) and/or weft threads

(50.65.72.84) are provided.

3. Heating bandage according to claim 1 or 2, characterized in that the base material (12) has elastic threads and in particular elastic conductive threads

(82.84) includes.

4. heating bandage according to one or more of the preceding claims, characterized in that different conductive threads (50,52,65,72,82,84) are used as warp and / or weft threads, which are in particular in the material and / or the distinguish resistance.

5. heating bandage according to one or more of the preceding claims, characterized in that at the in In longitudinally spaced end regions (14) of the heating bandage (10), woven electrodes (16a,b) are provided, which are formed in particular by electrically conductive weft threads (50,82).

6. Heating bandage according to claim 5, characterized in that between the end regions (14) running electrically conductive warp threads (52, 84) have a larger

Have resistance than the electrically conductive weft threads (50,84) in the end regions (14).

7. Heating bandage according to one or more of the preceding claims, characterized in that electronics (28) and / or power supply (22) via electrical contacting of the woven electrodes (16a, b), in particular via snap fasteners (18,20) or plug - or crimp connections are made.

8. heating bandage according to claim 7, characterized in that the electronics (28) are accommodated in a housing (24) which can be accommodated in particular in a pocket of the heating bandage (10).

9. Heating bandage according to one or more of the preceding claims, characterized in that a temperature sensor (32) is provided which interacts in particular with a temperature controller (28).

10. heating bandage according to one or more of the preceding claims, characterized in that the electronics

(28) via a Bluetooth interface (30.40) using a mobile phone (38) and in particular an app (36) of a mobile phone (38) can be controlled.

11. Heating bandage according to one or more of the preceding claims, characterized in that the base material (12) is provided as a fabric and the base material (12) comprises electrically conductive warp threads (52, 82) which are in a predetermined sequence with non-conductive Warp threads (54, 81) alternate, with at least one electrically conductive weft thread (50, 84) being woven into the end regions (14) of the heating bandage (10) to form a woven electrode (16a, b) and with the conductive warp threads (52 ,82) have a greater resistance than those in the end areas (14) of the heating bandage

(10) electrically conductive weft threads (50,84) arranged to form a woven electrode (16a,b).

12. Heating bandage according to claim 11, characterized in that the electrically conductive weft threads (50, 84) are made of the same material, in particular silver-coated polyamide yarn, as the conductive warp threads (52, 82).

13. Heating bandage according to one or more of the preceding claims, characterized in that the base material (12) is designed as a fabric and the warp threads (61) are designed to be electrically non-conductive and one or more electrically conductive weft threads (65) are embedded in the fabric in addition to further non-conductive weft threads (63) are drawn in and the electrically conductive weft threads (65) are carried along between the shots on the selvedge (67).

14. Heating bandage according to one or more of the preceding claims 1-10, characterized in that the

The base material (12) is designed as a knitted fabric, in particular as a knitted fabric, with the conductive thread (72) being introduced as a weft thread into the meshes of the knitted fabric consisting of non-conductive threads. 15. Heating bandage according to one or more of the preceding claims, characterized in that the heating bandage forms a heatable bandage with a base bandage which can be connected in the longitudinal direction to one or both sides of the heating bandage or can overlap or enclose it.