Traction shoe sleeve and traction device

Abstract

The invention discloses a traction shoe sleeve which comprises an outer shell sleeve and an inner fixing sleeve. The inner fixing sleeve wraps the foot and the shank, and the shell sleeve wraps and tightens the inner fixing sleeve. The traction boot cover further comprises a binding belt which is used for wrapping and tightening the inner fixing cover. The binding belt is provided with a plurality of binding assemblies, each binding assembly comprises two corresponding binding arms and a connecting part, the two corresponding binding arms surround the inner fixing sleeve and then are fixed through the connecting parts, pressure is applied to a plurality of parts of the inner fixing sleeve, and friction force between the inner fixing sleeve and the feet and the shanks of a user is increased. And the surface of the bandage also increases the friction force between the bandage and the outer side surface of the inner fixing sleeve and the inner side surface of the shell sleeve. By using the bandage, the feet and the shanks of the user are prevented from loosening or falling off in the traction process.

Description

Technical Field

[0001] The invention relates to the field of lower limb traction equipment for hip joint surgery, and in particular to a traction boot cover and a traction device. Background Art

[0002] During hip surgery, a traction device is required to open the hip joint. The traction device includes a traction bed, a traction device, and a traction boot. The traction boot includes an inner sleeve and an outer sleeve. The inner sleeve is made of soft foam and covers the foot and calf. The outer sleeve is made of hard material and is connected to the traction device after covering and tightening the inner sleeve. During surgery, the traction device pulls the user's foot and calf by pulling the outer sleeve. The outer sleeve covers and tightens the inner sleeve, and by applying pressure to the inner sleeve, the friction between the foot and calf and the inner sleeve and the friction between the inner sleeve and the outer sleeve is increased, thereby preventing the user's foot and calf from loosening or falling off from the traction boot during traction.

[0003] Users have different body sizes, and the sizes of their feet and calves are also different. Providing outer shells that are adapted to the body sizes of users of different body sizes will greatly increase the cost of use. The prior art uses a larger outer shell to meet the needs of users with smaller bodies by adjusting the accommodation space of the larger outer shell to be smaller. However, the outer shell is a hard shell. Even if the accommodation space of the foot and calf is adjusted to be smaller, it is difficult to completely cover the foot and calf of the user. It will also cause uneven pressure on the foot and calf of the user. Some parts have too much pressure, which damages the foot or calf of the user. Some parts have too little pressure, which makes the friction between the foot and calf of the part and the internal fixation sleeve, and the friction between the internal fixation sleeve and the outer shell small, resulting in relative movement of the foot and calf and the traction boot during traction, and even falling off the traction boot, seriously delaying the surgical process. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects or problems in the background technology and provide a traction boot cover which can prevent the foot and calf from loosening.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] A traction boot cover, comprising an inner fixing sleeve and an outer sleeve, wherein the inner fixing sleeve is suitable for forming an accommodating space for covering the foot and the calf under the restraint of the outer sleeve located outside the inner fixing sleeve, and is characterized in that it also comprises a strap; the strap comprises a plurality of restraining components arranged along the extension direction of the inner fixing sleeve and connected as a whole, each of the restraining components comprises two restraining arms corresponding to two positions and a connecting component arranged on the two restraining arms, the two restraining arms in the same restraining component surround the inner fixing sleeve, and are fixedly connected by the connecting component to tighten the inner fixing sleeve or detached by the connecting component to loosen the inner fixing sleeve.

[0007] Furthermore, the first side surface and the second side surface of the binding band are configured to be suitable for contacting the outer surface of the inner fixing sleeve and the inner surface of the outer sleeve respectively, and limiting the displacement of the inner fixing sleeve and the outer sleeve through friction.

[0008] Furthermore, the binding strap is provided with a base layer which is elastic, and the first side surface and the second side surface are fixed to two surfaces of the base layer.

[0009] Furthermore, the connecting component is a Velcro, and the surfaces of the restraining arms at two corresponding positions that fit each other are provided with a fleece-surface Velcro on one side and a hook-surface Velcro on the other side.

[0010] Furthermore, the binding strap is provided with through holes penetrating through both sides thereof, and the heel portion of the inner fixing sleeve is suitable for passing through the through holes, and the inner fixing sleeve is in contact with the edge of the through holes.

[0011] Furthermore, the base layer is made of TPU material.

[0012] Furthermore, the first side surface and the second side surface are made of brushed stretch fabric.

[0013] In addition, a traction device is also provided, which adopts a traction boot cover described in any one of the above items.

[0014] Compared with the prior art, the above solution has the following beneficial effects:

[0015] 1. The traction boot cover of the present invention comprises a strap, and a binding assembly is provided on the strap. The binding assembly covers and tightens the internal fixing sleeve, and applies pressure to the internal fixing sleeve. When the internal fixing sleeve is subjected to the pressure applied by the binding assembly, due to the transmission of force, the pressure is transmitted to the foot and calf of the user, that is, the pressure applied by the internal fixing sleeve on the foot and calf increases, so that the friction between the internal fixing sleeve and the foot and calf increases. When the foot and calf of the user are to be relatively displaced with the internal fixing sleeve, the friction force to be overcome increases, so as to prevent the foot and calf from loosening or falling off from the internal fixing sleeve during traction. In the process of traction of the lower limbs in hip joint surgery, the prior art is to use a hard outer shell to cover the soft internal fixing sleeve. The internal fixing sleeve is in direct contact with the human body, and a soft material is used to avoid damage to the human body; the outer shell is made of a hard material, so that the relative position of the foot and the calf can also be kept relatively fixed during the traction process; if a soft outer shell is used, the relative position between the foot and the calf will change during the traction process, which will damage the user. In the prior art, a larger outer sleeve is used, but the outer sleeve is made of hard material. For users of small size, even if the space of the outer sleeve for accommodating the inner sleeve is adjusted to be smaller, it is difficult to completely cover and tighten the inner sleeve. That is to say, for users of small size, the pressure applied by the outer sleeve is transmitted to the inner sleeve, so that the friction between the inner sleeve and the foot and calf is insufficient, and the foot and calf will move or even fall off in the inner sleeve during traction. The binding strap of the present invention is directly coated on the outside of the inner sleeve, and the pressure generated by it can be directly transmitted to the inner sleeve, increasing the friction between the inner sleeve and the foot and calf, and preventing relative displacement between the two. The use of the binding strap of the present invention can prevent the foot and calf from loosening or falling off from the traction boot during traction, and there is no need to produce various types of outer sleeves to match users of various sizes. For the traction boots already available on the market, it only needs to add binding straps to improve the function of binding the foot and calf of the existing products, greatly reducing the production and operation costs.

[0016] The present invention comprises a plurality of restraint components, which are arranged along the extension direction of the internal fixing sleeve and connected as a whole. The plurality of restraint components restrain different parts of the internal fixing sleeve, apply pressure to different parts of the internal fixing sleeve, increase the pressure of several parts between the internal fixing sleeve and the foot and the calf, increase the friction between several parts of the foot and the calf and the internal fixing sleeve, and keep the relative position between each part fixed during traction. At the same time, the friction between the internal fixing sleeve and several parts of the foot and the calf increases, and the overall friction between the internal fixing sleeve and the foot and the calf also increases.

[0017] Different users have different body sizes, and the shapes of their feet and calves are also different. The straps must apply appropriate pressure to the internal fixing sleeves of users of different body sizes. If the restraint assembly is a fixed size, it cannot adapt to users of different body sizes. The restraint assembly of the present invention includes restraint arms and connecting components corresponding to two positions, and the restraint arms surround the internal fixing sleeve. By adjusting the size of the surrounding shape of the restraint arms, the pressure of the restraint assembly on the internal fixing sleeve can be adjusted. After adjusting the appropriate pressure, the relative positions of the two corresponding restraint arms are fixed by the connecting component, so that the restraint assembly can continue to apply appropriate pressure to the internal fixing sleeve. After the traction is completed, the connecting component is disengaged to loosen the restraint of the restraint assembly on the internal fixing sleeve. In this way, there is no need to prepare various types of straps, and only one strap can be used to adapt to users of different body sizes. For the traction boots that already exist on the market, only one strap needs to be added to significantly increase the use effect of the existing traction boots, greatly reducing the cost of upgrading the equipment.

[0018] 2. During the traction process of hip joint surgery, the friction between the inner fixing sleeve covering the user's foot and calf and the contact surface of the outer sleeve is insufficient due to the insufficient pressure provided by the larger outer sleeve. During the traction process, the inner fixing sleeve and the outer sleeve are relatively displaced, and even the inner fixing sleeve covering the user's foot and calf falls off the outer sleeve. The bandage is covered on the outside of the inner fixing sleeve, and the bandage includes a first side surface and a second side surface that contact the outer surface of the inner fixing sleeve and the inner surface of the outer boot cover. When the inner fixing sleeve and the outer sleeve are to be relatively displaced, in addition to overcoming the friction between the inner fixing sleeve and the outer sleeve, it is also necessary to overcome the friction between the inner fixing sleeve and the outer sleeve. Compared with the outer sleeve that only contacts the inner fixing sleeve, the bandage of the present invention limits the relative displacement of the inner fixing sleeve and the outer sleeve through friction. This solution allows the bandage to solve the problem of insufficient friction between the inner fixing sleeve and the foot and calf, while also solving the problem of insufficient friction between the inner fixing sleeve and the outer sleeve.

[0019] 3. The bandage needs to be stretched and contracted frequently during use. The bandage is equipped with an elastic base layer to prevent it from being damaged during use. The traction boot cover is used during surgery. If the bandage is cracked or damaged during surgery, the pressure of the bandage on the internal fixation sleeve will be reduced, and the friction between the foot and calf and the internal fixation sleeve will be reduced. The two are prone to loosening or falling off, resulting in great surgical risks. The elastic base layer increases stability during surgery.

[0020] 4. The connecting parts on the restraint arms corresponding to the two positions are Velcro, one with a fleece Velcro and the other with a hook Velcro. When adjusting the pressure of the restraint assembly on the internal fixing sleeve, the restraint arms corresponding to the two positions will be frequently fixed and loosened. The Velcro is flexible to remove, which can reduce the adjustment time and prevent the lower limbs from moving too much during the installation or removal of the straps. The Velcro connection is stable. After the pressure is adjusted by the restraint arm, the pressure can be continuously applied to the internal fixing sleeve to maintain the stability of the friction between the internal fixing sleeve and the foot and calf. When in use, the outer shell restrains the internal fixing sleeve and the strap, and the outer shell also restrains the connecting parts. If the hardness of the connecting parts is large, when the outer shell restrains the connecting parts to the outside of the internal fixing sleeve, the foot and calf will have a significant foreign body sensation or even be damaged; Velcro is soft and low in hardness. When the outer shell restrains the Velcro to the outside of the internal fixing sleeve, it will not cause damage to the foot and calf.

[0021] 5. The strap is provided with through holes running through both sides thereof, and the through holes are suitable for the heel of the inner fixing sleeve to penetrate, and the inner fixing sleeve contacts the edge of the through holes. The through holes of the strap surround and bind the heel of the inner fixing sleeve. When the traction boot cover is in use, the inner fixing sleeve first covers the foot and the calf, then the strap binds the inner fixing sleeve, and then the outer shell covers the inner fixing sleeve and the strap. If no through holes are provided, wrinkles will be generated at the heel of the inner fixing sleeve when the strap binds the inner fixing sleeve. The smaller the user's body, the larger the wrinkles in this area. These wrinkles will cause the strap to accumulate. When the outer shell covers the inner fixing sleeve and the strap, due to the accumulation of these wrinkles, the inner fixing sleeve cannot be completely covered, and the inner fixing sleeve cannot be completely located at the pre-set position. During traction, the foot and the calf will become loose or fall off. In order to prevent the strap from generating wrinkles in this area, straps of different sizes should be produced to match users of different body shapes. The strap of the present invention is provided with through holes running through both sides thereof. When in use, the through holes are bound at the heel of the inner fixing sleeve, and the strap will not be wrinkled at this position. The outer sleeve can better cover the inner fixing sleeve and the strap, and there is no need to use straps of various sizes to match users of different body shapes, thereby greatly reducing the cost of use.

[0022] After the straps are used to bind the internal fixing sleeve, in the process of the outer sleeve covering the internal fixing sleeve and the straps, the internal fixing sleeve, the straps and the outer sleeve produce various extrusion, friction and deformation, etc., and the position of the internal fixing sleeve bound by the straps will change. The shapes and sizes of various parts of the human foot and calf are different. The position of the binding assembly to bind the internal fixing sleeve changes, and the pressure generated by the binding assembly on each binding part of the internal fixing sleeve will also change. After some binding assemblies change the binding position, the binding pressure increases and damages the foot and calf; after some binding assemblies change the binding position, the binding pressure decreases, and the pressure of the internal fixing sleeve on the foot and calf is insufficient. The friction between the two is insufficient, causing the two to shift during traction. The through-hole binding internal fixing sleeve heel, because the human foot has a groove in the arch of the foot towards the sole, and a protrusion in the heel of the foot away from the toes, the internal fixing sleeve is soft and can fit the shape of the human foot. The strap binds the heel of the foot inner fixation sleeve through the through hole. If the strap moves along the toe direction of the inner fixation sleeve, the protrusion of the heel of the inner fixation sleeve prevents the strap from moving in the toe direction; if the strap moves along the calf direction of the inner fixation sleeve, the groove of the arch of the inner fixation sleeve prevents the strap from moving in the calf direction. Therefore, the through hole can better limit the relative position of the strap and the inner fixation sleeve, and prevent the foot and calf from loosening or falling off the inner fixation sleeve.

[0023] 6. The base layer is made of TPU. TPU has excellent resilience. The bandage needs to be stretched and contracted frequently during use. The excellent resilience makes the bandage not easily damaged during use. The traction boot cover is used during surgery. If the bandage is cracked and damaged during the operation, the pressure of the bandage on the internal fixation sleeve will be reduced, and the friction between the foot and calf and the internal fixation sleeve will be reduced. The two are prone to loosening or falling off, resulting in great surgical risks. The bandage is made of TPU material to increase stability during surgery.

[0024] 7. The first side and the second side are made of brushed elastic fabric. The brushed elastic fabric is made of a brushed finishing process to form dense fluff on the surface, which increases the friction coefficient of the fabric and improves the friction. The first side and the second side are located between the inner fixing sleeve and the outer shell, increasing the friction between the inner fixing sleeve and the outer shell to prevent movement between the two. The brushed elastic fabric also has the characteristics of softness, comfort and high resilience. When the traction boot cover is in use, the outer shell will bind the inner fixing sleeve and the strap. The inner fixing sleeve is made of a soft material. If the first side and the second side are made of a hard material, when the outer shell binds the inner fixing sleeve and the strap, the hard first side and the second side will cause discomfort to the foot and calf, and may even damage the foot or calf. The first side and the second side will frequently stretch and shrink with the base layer. The brushed elastic fabric has a high resilience, so it is not easily damaged when the base layer frequently stretches and shrinks.

[0025] 8. The traction device made by the above technical solution can prevent the displacement of the foot and calf when the lower limbs are pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0027] Figure 1 is a schematic diagram of a traction boot cover according to an embodiment;

[0028] Figure 2 is a schematic diagram of an internal fixation sleeve;

[0029] Figure 3 is a schematic diagram of the structure of the strap;

[0030] Figure 4 is a side view of the internal fixation sleeve and the binding strap;

[0031] Figure 5 It is a front view diagram of the internal fixation sleeve and the bandage;

[0032] Figure 6 It is a back view of the internal fixation sleeve and the strap;

[0033] Figure 7 A cross-sectional view of the strap.

[0034] Description of main reference numerals:

[0035] The binding belt 1 ; the inner fixing sleeve 2 ; the outer sleeve 3 ; the binding assembly 111 ; the binding arm 12 ; the through hole 100 ; the first side surface 101 ; the second side surface 102 ; the base layer 103 . DETAILED DESCRIPTION

[0036] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0037] In the claims and the specification, unless otherwise defined, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings and are only for the convenience of simplifying the description and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0038] In the claims and the specification, unless otherwise defined, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0039] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0040] In the claims and the specification, unless otherwise defined, the term "provided with" means that the technical feature located thereafter is a part of the technical feature located therefor.

[0041] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0042] See also Figure 1 and Figure 2 , Figure 1 The traction boot cover comprises an inner fixing cover 2 and an outer cover 3. Figure 2 The schematic diagram of the inner fixing sleeve 2 is shown. The inner fixing sleeve 2 is suitable for forming a storage space for covering the foot and calf under the restraint of the outer shell 3 on its outer side. The inner fixing sleeve 2 is made of soft foam material and is used to cover the foot and calf. The soft foam plays a role in protecting the foot and calf. The outer shell 3 is a hard shell, which can prevent relative movement between the foot and the calf. The outer shell 3 is on the outside of the inner fixing sleeve 2 and restrains the inner fixing sleeve 2 so that it covers and restrains the foot and calf. During the operation, the outer shell 3 is pulled to move the user's foot and calf to the desired position. Figure 3 , Figure 4As shown, the present invention includes a strap 1, and the strap 1 includes a plurality of binding components 111 arranged along the extension direction of the inner fixing sleeve 2 and connected as one body. The plurality of binding components 111 are arranged along the extension direction of the inner fixing sleeve 2 to bind different parts of the inner fixing sleeve 2. The binding components 111 are coated on the outer side of the inner fixing sleeve 2 and tighten the inner fixing sleeve 2, and apply pressure to the inner fixing sleeve 2. Due to the transmission of force, the pressure of the inner fixing sleeve 2 on the foot and the calf increases. The friction between the inner fixing sleeve 2 and the foot and the calf is increased by increasing the pressure between the inner fixing sleeve 2 and the foot and the calf. The greater the friction between the two, the greater the friction that needs to be overcome when relative displacement occurs, and the less likely it is to occur relative displacement. The plurality of binding components 111 apply pressure to multiple parts of the inner fixing sleeve 2, increase the friction between multiple parts of the inner fixing sleeve 2 and the foot and the calf, and make it difficult for each part of the foot and the calf to move with the inner fixing sleeve 2. In this embodiment, the strap 1 is provided with three binding components 111, which respectively bind the forefoot, ankle and calf of the inner fixing sleeve 2, and correspondingly increase the friction between the inner fixing sleeve and the forefoot, ankle and calf of the user.

[0043] The binding assembly 111 includes two corresponding binding arms 12 and a connecting component provided on the two binding arms 12. The two binding arms 12 in the same binding assembly 111 surround the inner fixing sleeve 2 and are fixedly connected by the connecting component to tighten the inner fixing sleeve 2 or detached by the connecting component to loosen the inner fixing sleeve 2. The binding assembly 111 includes two corresponding binding arms 12, the binding arms 12 surround the inner fixing sleeve 2, and the pressure of the binding assembly 111 on the inner fixing sleeve 2 can be adjusted by adjusting the size of the surrounding shape of the binding arms 12. The same strap 1 can adjust the size of the surrounding shape of the binding arms 12 to adjust the size of the pressure of the binding assembly 111 on the inner fixing sleeve 2, so that sufficient pressure can be applied to the feet and calves of different body shapes to prevent the feet and calves from falling off the inner fixing sleeve 2. The corresponding two binding arms 12 are provided with connecting components, and the corresponding binding arms 12 surround the inner fixing sleeve 2 to adjust the pressure on it. After the pressure is adjusted, the corresponding binding arms 12 are fixed by the connecting component, so that the adjusted pressure can be continuously applied to the inner fixing sleeve 2. After use, the binding arm 12 is no longer bound by the inner fixing sleeve 2 by disengaging the connection component, so that the binding belt 1 and the inner fixing sleeve 2 can be easily removed.

[0044] See also Figure 7As shown, the bandage 1 includes a first side surface 101 and a second side surface 102, which are configured to be suitable for contacting the outer surface of the inner fixing sleeve 2 and the inner surface of the outer boot sleeve, respectively, and limiting the displacement of the inner fixing sleeve and the outer shell sleeve by friction. The first side surface 101 and the second side surface 102 are used to increase the friction force on the surface of the bandage 1. The first side surface 101 and the second side surface 102 are located on two surfaces of the bandage 1. The bandage 1 is located outside the inner fixing sleeve 2 and tightens the inner fixing sleeve 2. The outer shell 3 covers the inner fixing sleeve 2 and the bandage 1. The first side surface 101 and the second side surface 102 are respectively in contact with the outer surface of the inner fixing sleeve 2 and the inner surface of the outer shell 3 to increase the friction between the contact surfaces. The bandage 1 increases the friction between the bandage 1 and the inner fixing sleeve 2 by tightening the inner fixing sleeve 2 to increase the pressure, and increases the friction between the bandage 1 and the inner fixing sleeve 2 through the first side surface 101. When the outer shell 3 covers the inner fixing sleeve 2, it contacts the outer surface of the inner fixing sleeve 2 and the first side surface 101 of the binding strap 1. Compared with the prior art which only contacts the outer surface of the inner fixing sleeve 2, in this embodiment, when the inner fixing sleeve 2 and the outer shell 3 are to undergo relative displacement, the friction force that needs to be overcome is increased. The greater the friction force, the less likely it is that the two will undergo relative displacement.

[0045] As a preferred embodiment, the strap 1 is provided with a base layer 103 which is elastic, and the first side surface 101 and the second side surface 102 are fixed to two surfaces of the base layer 103. The strap 1 needs to be frequently stretched and contracted during use, and the elastic base layer 103 makes the strap 1 also elastic, which is convenient for stretching and contracting during use.

[0046] As a preferred embodiment, the connecting component is a Velcro. The surfaces of the two corresponding binding arms 12 that are in contact with each other are provided with a fleece Velcro and a hook Velcro. During traction, after the distance between the two corresponding binding arms 12 is adjusted, the relative position between the two is fixed by the Velcro. After the traction is completed, the Velcro between the two binding arms 12 is separated from each other to loosen the inner fixing sleeve 2 of the strap.

[0047] As a preferred embodiment, the strap 1 is provided with through holes 100 running through both sides thereof, and the heel portion of the inner fixing sleeve 2 is suitable for passing through the through holes 100, and the inner fixing sleeve 2 is in contact with the edge of the through holes 100, and the through holes 100 surround and tighten the heel portion of the inner fixing sleeve 2. The through holes 100 allow the strap 1 to pass through the heel portion of the inner fixing sleeve 2, and the strap 1 will not produce wrinkles on the heel portion of the inner fixing sleeve 2. The strap 1 can better cover the inner fixing sleeve 2, and the outer sleeve 3 can better cover the inner fixing sleeve 2. Moreover, the through holes 100 constrain the heel portion of the inner fixing sleeve 2, which can prevent the strap 1 from relative displacement with the inner fixing sleeve 2 when worn.

[0048] As a preferred embodiment, the base layer 103 is made of TPU. TPU has excellent resilience. The strap 1 will frequently stretch and shrink during use, and the excellent resilience can make the strap 1 less prone to damage, thereby extending its use times and stability.

[0049] As a preferred embodiment, the first side surface 101 and the second side surface 102 are made of brushed elastic fabric. The brushed elastic fabric increases the friction of the strap surface. At the same time, the brushed elastic fabric also has the characteristics of softness and high resilience, which can increase the user experience and durability of use.

[0050] In addition, the present invention also provides a traction device, which includes the traction boot cover.

[0051] The present invention provides a traction boot cover, comprising an inner fixing sleeve 2 and an outer sleeve 3. The inner fixing sleeve 2 covers the foot and the calf, and the outer sleeve 3 is located outside the inner fixing sleeve 2. The outer sleeve 3 constrains the inner fixing sleeve 2 so that the inner fixing sleeve 2 constrains the foot and the calf. When in use, the foot and the calf are pulled by pulling the outer sleeve 3. In order to prevent the foot and the calf from relative displacement with the outer sleeve 3, the friction between each contact surface should be increased, that is, the friction between the inner fixing sleeve 2 and the foot and the calf, and the friction between the outer sleeve 3 and the inner fixing sleeve 2 should be increased. The traction boot cover comprises a binding strap 1, and the binding strap 1 is provided with a plurality of binding components 111 arranged along the extension direction of the inner fixing sleeve 2 and connected as one. The plurality of binding components 111 are used to tighten the inner fixing sleeve 2, apply pressure to the inner fixing sleeve 2, increase the pressure between the inner fixing sleeve 2 and the foot and the calf of the user, and increase the friction between the contact surfaces of the two. Each binding component 111 comprises binding arms 12 corresponding to two positions and a connecting component provided on the two binding arms 12. The two binding arms 12 of the same binding component 111 surround the inner fixing sleeve 2. The pressure of the binding component 111 on the inner fixing sleeve 2 is adjusted by adjusting the binding arms 12. After the pressure is adjusted, the relative positions of the two binding arms 12 are fixed by Velcro. The strap 1 includes a first side surface 101, a second side surface 102 and a base layer 103. The first side surface 101 and the second side surface 102 are located on two surfaces of the base layer 103. The first side surface 101 and the second side surface 102 limit the relative displacement of the inner fixing sleeve 2 and the outer shell 3 through friction. When the inner fixing sleeve 2 and the outer shell 3 are to undergo relative displacement, in addition to overcoming the friction between the two, they also have to overcome the friction between the first side surface 101 and the second side surface 102.

[0052] The above specification and description of the embodiments are used to explain the protection scope of the present invention, but do not constitute a limitation on the protection scope of the present invention.

Claims

1. A traction boot cover, comprising an inner fixing cover (2) and an outer covering (3), wherein the inner fixing cover (2) is adapted to form a receiving space for covering the foot and the calf under the restraint of the outer covering (3) located outside the inner fixing cover (2), characterized in that: Also includes a strap (1); The binding belt (1) comprises a plurality of binding components (111) arranged along the extension direction of the inner fixing sleeve (2) and connected as one body, each of the binding components (111) comprising two binding arms (12) at corresponding positions and a connecting component provided on the two binding arms (12), the two binding arms (12) in the same binding component (111) surround the inner fixing sleeve (2) and are fixedly connected by the connecting component to tighten the inner fixing sleeve (2) or detached by the connecting component to loosen the inner fixing sleeve (2).

2. A traction boot cover as claimed in claim 1, characterized in that: The first side surface (101) and the second side surface (102) of the binding strap (1) are configured to be suitable for contacting the outer surface of the inner fixing sleeve (2) and the inner surface of the outer sleeve (3) respectively, and to limit the displacement of the inner fixing sleeve (2) and the outer sleeve (3) through friction.

3. A traction boot cover as claimed in claim 2, characterized in that: The binding belt (1) is provided with a base layer (103) which is elastic, and the first side surface (101) and the second side surface (102) are fixed to two surfaces of the base layer (103).

4. A traction boot cover as claimed in claim 3, characterized in that: The connecting component is a Velcro, and the mutually abutting surfaces of the two corresponding binding arms (12) are provided with a fleece-surface Velcro on one side and a hook-surface Velcro on the other side.

5. A traction boot cover as claimed in claim 4, characterized in that: The binding strap (1) is provided with through holes (100) penetrating through both sides thereof, and the heel portion of the inner fixing sleeve (2) is suitable for passing through the through hole (100), so that the inner fixing sleeve (2) is in contact with the edge of the through hole (100).

6. A traction boot cover as claimed in claim 3, characterized in that: The base layer (103) is made of TPU material.

7. A traction boot cover as claimed in claim 2, characterized in that: The first side surface (101) and the second side surface (102) are made of brushed stretch fabric.

8. A traction device, characterized in that: It adopts a traction boot cover as described in any one of claims 1 to 7.

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