Foot constriction structure and traction bootie

Abstract

The utility model discloses a foot binding structure, including boot cover, binding band, connecting component and a plurality of through -hole. Through -hole is located in boot cover, and binding band is flexible band -like body, and binding band passes through through -hole and goes into and goes out boot cover. The part of binding band from through -hole goes into to boot cover inside, and the foot of user is bound in boot cover inside. The part of binding band from through -hole goes out to boot cover outside, and along the outside of boot cover surrounds its circumferential surface, and through connecting component connects binding band two ends closed binding and contains space. Through the binding action of binding band in boot cover inside and outside, prevent the foot of user from falling off from boot cover.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a foot restraint structure and a traction boot cover. Background Technology

[0002] During hip joint surgery, a traction device is needed to open the hip joint. The traction device includes a traction bed, a traction device, and a traction boot cover. The traction boot cover consists of an outer boot cover and a boot cover. The boot cover covers the foot and lower leg, while the outer boot cover is located outside the boot cover and connects to the traction device after the outer boot cover is tightened. During surgery, the traction device pulls on the traction boot cover worn by the user to open the hip joint.

[0003] The traction boot cover consists of an outer boot cover and a boot cover. The boot cover, made of soft material, comes into direct contact with the foot and calf, protecting them. The outer boot cover, made of rigid material, applies traction force to both the foot and calf simultaneously, preventing relative displacement. Since users have different foot and calf shapes, using various shapes of outer boot covers would significantly increase costs; therefore, larger sizes are typically used. When a user is smaller, the larger outer boot cover is adjusted to a smaller size to provide better support. However, because the outer boot cover is rigid, adjusting it from a large to a small size limits its effectiveness, potentially causing insufficient pressure on certain areas. This results in insufficient friction between the boot cover and the foot / calf in those areas, allowing the foot / calf to slip off the boot cover during traction. Utility Model Content

[0004] The purpose of this application is to overcome the aforementioned defects or problems in the prior art and to provide a tightening structure and traction boot cover to prevent the foot and lower leg from slipping off.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] A foot tightening structure includes: a boot cover having an accommodating space defined by its sidewalls and bottomwalls for accommodating a foot, the sidewalls being connected to the bottomwalls and adapted to move relative to the bottomwalls to open or close the accommodating space; the boot cover having two sets of through-hole groups penetrating its interior and exterior, each set of through-holes including two corresponding through holes; a tightening band that passes through the two through holes of one set of through-holes from the inside out and then back in, with its two ends crossing each other and passing through the two through holes of the other set of through-holes from the inside out, and adapted to wrap around the outer surface of the boot cover to tighten the sidewalls; and a connecting member disposed on the tightening band and detachably connected to the two ends of the tightening band, adapted to connect the two ends of the tightening band after the tightening band tightens the sidewalls so that the accommodating space remains closed.

[0007] Furthermore, the sidewall is provided with a forefoot portion, and the two through hole groups include a first through hole group and a second through hole group. The first through hole group includes a first through hole and a second through hole respectively provided on the bottom wall; the second through hole group includes a third through hole and a fourth through hole respectively provided on the forefoot portion.

[0008] Furthermore, the sidewall is also provided with a heel portion, an ankle portion, and a calf portion. The two ends of the tightening strap extend from the third and fourth through holes to the outside of the boot cover, and then extend sequentially along the forefoot portion to the bottom wall, and further extend along the bottom wall to the heel portion and ankle portion on the other side of the sidewall, and then wrap around the calf portion.

[0009] Furthermore, the lower leg is provided with a set of fixing through holes, which includes a first fixing through hole and a second fixing through hole at two corresponding positions, and the two ends of the tightening strap pass through the two fixing through holes in sequence at the lower leg.

[0010] Furthermore, the connecting component is a Velcro strap.

[0011] Furthermore, the tightening band is elastic.

[0012] A traction boot cover includes an outer boot cover located on the outside of a foot restraint structure described in any of the preceding claims, both of which together restrain the user's foot and lower leg.

[0013] Compared with existing technologies, the above solution has the following beneficial effects:

[0014] In the first technical solution, the sidewalls and bottomwalls of the boot cover cooperate to form a space for accommodating the foot. The sidewalls can be opened or closed. When the sidewalls are open, the foot and lower leg can extend into the space through the opening, and then the sidewalls can be closed to seal the space. The open sidewall structure increases the space for the foot and lower leg to enter the space, making it easier to put on the boot cover and reducing movement of the user's lower limbs during wear. The boot cover has four through holes that are paired and run through the inside and outside of the boot cover, as well as a tightening strap. The through holes run through the inside and outside of the boot cover, and the tightening strap can extend into and out of the boot cover through the four through holes.

[0015] The two ends of the elastic band cross inside the boot cover to secure the user's foot. This cross structure better restrains the user's foot in the boot cover, preventing it from slipping off. The elastic band also wraps around the side walls of the boot cover on the outside, tightening the boot cover to the user's foot. This increases the friction between the contact surfaces by increasing the pressure of the boot cover on the user's foot, further preventing the foot from slipping off.

[0016] The design incorporates a tightening strap that both secures the user's foot inside the boot cover and tightens it to the boot cover from the outside. This combined action of the straps inside and outside prevents the foot from slipping off or shifting. Furthermore, the straps can be easily and quickly replaced without the need for tools.

[0017] The two ends of the elastic band are detachably connected by connecting parts, keeping the accommodating space closed, so that the binding effect of the elastic band can be continuously applied to the boot cover and the user's feet and calves.

[0018] In the second technical solution, the first and second through holes are located on the left and right sides of the bottom wall, while the third and fourth through holes are located on the left and right side walls of the forefoot. The tightening strap extends into the boot cover from the bottom wall without affecting the structure of the boot cover opening. The tightening strap extends into the boot cover from the bottom wall and extends out of the boot cover from the side wall. One end of the tightening strap enters the boot cover from the first through hole on the left side, wraps around the bottom, sides, and back of the foot in sequence, and then extends out from the fourth through hole on the right side. The second end of the tightening strap enters the boot cover from the second through hole on the right side, wraps around the bottom, sides, and back of the foot in sequence, and then extends out from the third through hole on the left side. This structure allows the tightening strap to better tighten the user's foot inside the boot cover, providing a good restraining effect even if the user's foot shape and size are different.

[0019] In the third technical solution, the tightening strap extends from the third and fourth through holes to the outside of the boot cover, without wrapping around the upper end of the boot cover, and extends sequentially along the side of the forefoot to the bottom, and further to the heel and ankle on the other side. Combined with the second technical solution, the tightening strap does not wrap around the upper end of the boot cover when it is inserted into, extended out of, or wrapped around the outside of the boot cover. Both ends of the tightening strap wrap around the calf; when in use, loosening the tightening strap at the calf allows the upper end of the boot cover to be fully opened, facilitating the user's foot and calf into the boot cover. This solution prevents the user's foot and calf from slipping off the boot cover without hindering the user's foot and calf from entering the boot cover from the top.

[0020] In the fourth technical solution, the two ends of the elastic band extend from the forefoot of the boot cover and extend in different directions, passing through the first and second fixing through holes to secure the elastic band to the lower leg of the boot cover. The first through hole secures the elastic band to the forefoot, and the second through hole secures the elastic band to the lower leg. This structure prevents the elastic band from moving inside and outside the boot cover. Furthermore, when the boot cover is not in use, the elastic band can also be secured to the foot and lower leg, eliminating the need to readjust the position of the elastic band when using the boot cover, making it convenient to put on the boot cover directly.

[0021] In the fifth technical solution, the connecting parts use Velcro. When adjusting the binding effect of the elastic band, the connecting parts are typically disassembled and reassembled multiple times to achieve the best binding effect. The Velcro is easy to remove and remove, reducing movement of the user's feet and lower legs during adjustment and preventing injury. The Velcro is located on the two overlapping sides of the elastic band; loosening the Velcro allows the elastic band to be released, opening the top of the boot cover. The Velcro is soft, allowing both ends of the elastic band to quickly pass through the through-holes and fixing holes.

[0022] In the sixth technical solution, the elastic band needs to be frequently stretched and contracted, and its elasticity allows for more stable use. Simultaneously, the elastic elastic band can automatically rebound after tightening the foot and boot cover, maintaining the binding tightness and providing better, continuous pressure on the foot and boot cover.

[0023] In the seventh technical solution, the outer boot cover is located outside any of the above-mentioned foot tightening structures, together forming a traction boot cover. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below:

[0025] Figure 1 This is a schematic diagram of a boot cover;

[0026] Figure 2 A diagram showing the open top of the boot cover;

[0027] Figure 3 A schematic diagram of the bottom surface of the boot cover and elastic band;

[0028] Figure 4 A side view of the boot covers and elastic bands;

[0029] Figure 5 A schematic diagram of the back of the boot covers and elastic bands;

[0030] Figure 6 This is a schematic diagram of a traction boot cover.

[0031] Explanation of key figure labels:

[0032] 1. Fastening strap; 2. Boot cover; 3. Outer boot cover; 20. Forefoot part; 21. Heel part; 22. Ankle part; 23. Lower leg part; 11. First through hole; 12. Second through hole; 13. Third through hole; 14. Fourth through hole; 31. First fixing through hole; 32. Detailed Implementation

[0033] Unless otherwise specified, the terms “first,” “second,” or “third,” etc., in the claims and description are used to distinguish different objects and not to describe a particular order.

[0034] Unless otherwise specified, in the claims and description, the terms “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “clockwise,” “counterclockwise,” etc., indicating orientation or positional relationship, are based on the orientation and positional relationship shown in the drawings and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0035] Unless otherwise specified in the claims and description, the terms "fixed connection" or "fixed connection" shall be interpreted broadly to mean any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other means or components.

[0036] Unless otherwise specified, in the claims and description, the terms "comprising," "having," and variations thereof mean "including but not limited to."

[0037] In the claims and description, unless otherwise specified, the term "have" means that a technical feature that follows is part of a technical feature that precedes it.

[0038] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0039] See Figure 1 , Figure 2The boot cover 2 has a receiving space defined by its side wall 5 and bottom wall 6 for accommodating the foot. The side wall 5 is connected to the bottom wall 6 and is adapted to move relative to the bottom wall 6 to open or close the receiving space. The boot cover 2 is made of flexible material and has side walls 5 and bottom walls 6, which together form the receiving space for accommodating the foot. The bottom wall 6 covers the bottom of the foot, and the side wall 5 covers the sides and top of the foot. In this embodiment, the side wall 5 extends upward to form a receiving space for accommodating the foot and lower leg with the bottom wall 6. The side wall 5 extends along the top of the foot to the lower leg opposite the foot and has an opening structure. The side wall 5 on the left side of the opening structure has a left side wall, and the side wall 5 on the right side of the opening structure has a right side wall. Left and right are based on the orientation of the boot cover 2. The direction of the boot cover 2 towards the little finger is left, and the direction towards the thumb is right. Up and down are based on the orientation of the boot cover 2. The direction in contact with the ground is down, and the direction away from the ground is up. Opening the accommodating space means that the upper end of the left wall moves to the left and the upper end of the right wall moves to the right, opening the upper opening structure of side wall 5. Closing the accommodating space means that the upper end of the left wall moves to the right and the upper end of the right wall moves to the left, closing the upper opening structure of side wall 5. When wearing it, the upper end of side wall 5 is opened, and the foot and lower leg extend into the accommodating space from the upper end of side wall 5. Then, side wall 5 is closed to cover the foot and lower leg.

[0040] The boot cover 2 has two sets of through holes running through its interior and exterior. Each set of through holes includes two corresponding through holes. These through holes connect the interior and exterior of the accommodating space of the boot cover 2. The boot cover 2 has four through holes, two of which are corresponding in position, and the other two are also corresponding to each other. "Corresponding in position" means that the through holes are located on the left and right sides of the boot cover 2, respectively. For example... Figure 2 As shown, the two through holes of one through hole group are located on the left and right sides of the boot sleeve 2, respectively, and the two through holes of the other through hole group are also located on the left and right sides of the boot sleeve 2, respectively.

[0041] The tightening strap 1, after passing through two through holes in one group of through holes from the inside out and then back in, has its two ends crossing each other and passing through two through holes in another group of through holes from the inside out, and is adapted to wrap around the outer surface of the boot sleeve 2 to tighten the sidewall 5. In this embodiment, as shown... Figure 2As shown, the tightening band 1 is a flexible strip that can be bent to wrap around the foot and boot cover 2. The tightening band 1 is a strip with a cross-sectional dimension slightly smaller than the through hole, allowing it to pass through the through hole. One end of the tightening band 1 extends from one through hole to the outside of the boot cover 2, and then extends into the inside of the boot cover 2 from another through hole in the same through hole group, at which point both ends of the tightening band 1 are located within the accommodating space. One end of the tightening band 1 extends from the left through hole to the right through hole of another through hole group, and the other end extends from the right through hole to the left through hole of another through hole group, at which point the two ends of the tightening band 1 cross within the accommodating space. The two ends of the tightening band 1 form two tightening portions with the inner walls of the side wall 5 and the bottom wall 6, respectively. After the two ends of the tightening strap 1 extend from the through hole to the outside of the boot cover 2, they wrap around the outer surface of the side wall 5. In this embodiment, they also wrap around the outer surface of the bottom wall 6 to tighten the boot cover 2 together with the foot and calf.

[0042] A connecting component, disposed on the tension band 1 and detachably connected to both ends of the tension band 1, is adapted to connect both ends of the tension band 1 after the tension band 1 has tightened the side wall 5 and bottom wall 6, so as to keep the accommodating space closed. For example... Figure 4 As shown, connecting components are located at both ends of the tightening strap 1. After the two ends of the tightening strap 1 wrap around the side wall 5 and the bottom wall 6, the connecting components on both ends cooperate to fix the two ends. After the two ends of the tightening strap 1 are fixed, pressure is continuously applied to the boot cover 2 to keep the accommodating space continuously closed.

[0043] In a preferred embodiment, the sidewall 5 is provided with a forefoot portion 20 covering the front of the foot. The two through-hole groups include a first through-hole group and a second through-hole group. The first through-hole group includes a first through-hole 11 and a second through-hole 12 respectively located on the left and right sides of the bottom wall 6. The second through-hole group includes a third through-hole 13 and a fourth through-hole 14 respectively located on the left and right sides of the forefoot portion 20. Figure 2As shown, the left and right sides are identified based on the orientation of the boot cover 2. The direction of the boot cover 2 towards the little finger is left, and the direction towards the thumb is right. "Corresponding" refers to the symmetrical arrangement of two through holes in the same through hole group. In this embodiment, the first through hole 11 and the second through hole 12 are symmetrically arranged on the left and right sides of the bottom wall 6 and located at the arch of the foot. The third through hole 13 and the fourth through hole 14 are symmetrically arranged on the left and right sides of the forefoot portion 20 of the side wall 5. The first through hole 11 and the third through hole 13 are located on the left side of the boot cover 2, and the second through hole 12 and the fourth through hole 14 are located on the right side of the boot cover 2. One end of the elastic band 1 extends from the first through hole 11 on the bottom wall 6 to the outside of the boot sleeve 2, then extends from the second through hole 12 on the bottom wall into the receiving space of the boot sleeve 2, and further extends from the third through hole 13 on the forefoot portion 20 on the side wall 5 to the outside of the boot sleeve 2; the other end of the elastic band 1 extends from the fourth through hole on the forefoot portion 20 on the side wall 5 to the outside of the boot sleeve 2. Within the receiving space of the boot sleeve 2, one end of the elastic band 1 extends from the first through hole to the fourth through hole 14, that is, from the left side to the right side of the boot sleeve 2; the other end extends from the second through hole 12 to the third through hole 13, that is, from the right side to the left side of the boot sleeve 2. The two ends of the elastic band 1 cross within the receiving space.

[0044] In a preferred embodiment, the sidewall 5 also includes a heel portion 21, an ankle portion 22, and a calf portion 23 covering the rear of the foot. The two ends of the tightening strap 1 extend from the third through hole 13 and the fourth through hole 14 to the outside of the boot sleeve 2, then extend sequentially along the forefoot portion 20 of the sidewall 5 to the bottom wall 6, and further extend to the heel portion 21 and ankle portion 22 on the other side of the sidewall 5, subsequently wrapping around the calf portion 23. Figure 2 , Figure 3 , Figure 4As shown, the two ends of the elastic band 1 extend from the third through hole 13 and the fourth through hole 14 to the outside of the boot cover 2, respectively. One end of the elastic band 1 extending from the third through hole 13 on the left side of the side wall 5 extends along the outside of the left side of the side wall 5 to the left side of the bottom wall 6, then extends from the left side of the bottom wall 6 to the right side, and further extends sequentially to the heel 21 and ankle 22 on the right side of the side wall 5, and then wraps around the calf 23 from right to left. The other end of the elastic band extending from the fourth through hole 14 on the right side of the side wall 5 extends along the outside of the right side of the side wall 5 to the right side of the bottom wall 6, then extends from the right side of the bottom wall 6 to the left side, and further extends sequentially to the heel 21 and ankle 22 on the left side of the side wall 5, and then wraps around the calf 23 from left to right. The two ends of the tightening strap 1 extend from the third through hole 13 and the fourth through hole 14 respectively and wrap around the side wall 5 and the bottom wall 6. Only the lower leg portion 23 has an upper opening structure that wraps around the side wall 5; other parts do not have an upper opening structure that wraps around the side wall 5. The first through hole 11 and the second through hole 12 are located on the bottom wall 6. The tightening strap 1 from the first through hole 11 to the second through hole 12 is located outside the bottom wall 6 and does not wrap around the upper opening structure of the side wall 5. After the two ends of the tightening strap 1 on the lower leg portion 23 are released, the upper opening structure of the boot cover 2 can be opened, allowing the foot and lower leg to extend into the receiving space.

[0045] In a preferred embodiment, the lower leg portion 23 is provided with a set of fixing through holes, including two corresponding first fixing through holes 31 and second fixing through holes 32. The two ends of the tightening strap 1 pass through the two fixing through holes sequentially in the lower leg portion 23. Figure 2 and Figure 5 As shown, in this embodiment, the back of the lower leg portion 23 of the boot cover 2 is provided with a first fixing through hole 31 and a second fixing through hole 32 corresponding to the position. The first fixing through hole 31 is located on the left side, and the second fixing through hole 32 is located on the right side. The two ends of the tightening strap 1 wrap around the lower leg portion 23, with one end wrapping around the lower leg portion 23 from right to left, passing through the first fixing through hole 31 and the second fixing through hole 32 in sequence, and the other end wrapping around the lower leg portion 23 from right to right, passing through the second fixing through hole 32 and the first fixing through hole 31 in sequence.

[0046] In a preferred embodiment, the detachable connecting component is Velcro. The two ends of the tightening strap 1 wrap around the lower leg 23 in opposite directions, overlapping each other at the lower leg 23. One of the overlapping surfaces of the tightening strap 1 has a loop fastener, and the other has a hook fastener. After the two ends of the tightening strap 1 wrap around the lower leg 23, they are secured together by the loop fastener and the hook fastener. When the Velcro is loosened, the two ends of the tightening strap 1 are no longer tightened around the lower leg 23, and the upper opening of the boot cover 2 can be opened.

[0047] As a preferred embodiment, the elastic band is elastic. The elastic elastic band provides good stretch and contraction capabilities and is able to automatically spring back after tightening, maintaining the binding tightness.

[0048] Furthermore, this application also provides a traction boot cover, which includes an outer boot cover 3 and the aforementioned foot tightening structure. For example... Figure 6 As shown, the aforementioned foot-tightening structure is suitable for tightening the user's foot and calf under the restraint of its outer boot sleeve 3.

[0049] This utility model provides a foot-tightening structure, including a boot cover 2, which has side walls 5 and a bottom wall 6. The side walls 5 and the bottom wall 6 together form a space for accommodating the foot and lower leg. The side walls 5 can be movably opened or closed relative to the bottom wall 6 to accommodate the space. The side walls 5 have a forefoot portion 20, a heel portion 21, an ankle portion 22, and a lower leg portion 23. It also has four through holes that are located in pairs, including a first through hole 11, a second through hole 12, a third through hole 13, and a fourth through hole 14. The first through hole 11 and the second through hole 12 are symmetrically located on the left and right sides of the bottom wall 6, and the third through hole 13 and the fourth through hole 14 are symmetrically located on the left and right sides of the forefoot portion 20. The elastic band 1 is a flexible strip. One end extends from the first through hole 11 to the outside of the boot cover 2, then through the second through hole 12 into the inside of the boot cover 2, and then through the third through hole to the outside of the boot cover 2. The other end extends from the fourth through hole 14 to the outside of the boot cover 2. The two ends of the elastic band 1 cross each other within the accommodating space to jointly bind the foot. After the two ends of the elastic band 1 extend from the third through hole 13 and the fourth through hole 14 of the forefoot portion 20 to the outside of the boot cover, they extend along the outside of the boot cover 2 to the bottom wall, and further extend to the heel portion 21, ankle portion 22, and calf portion 23 on the other side of the boot cover 2, respectively. Then, after passing through two fixing holes in sequence at the calf portion 23, it wraps around the calf portion 23 and is secured with Velcro. When wearing the boot, loosening the Velcro releases the elastic band 1 from binding the calf portion 23, opening the accommodating space of the boot cover 2. The user's feet and calves extend into the upper part of the boot cover 2, allowing the user's feet to pass through two ring-shaped tightening parts. After adjusting the pressure of the tightening strap 1, the tightening strap 1 is fixed by Velcro, allowing the tightening strap 1 to continuously act to prevent the feet and calves from slipping off or moving from the boot cover.

[0050] The description of the above specification and embodiments is used to explain the scope of protection of this application, but does not constitute a limitation on the scope of protection of this application.

Claims

1. A foot-tightening structure, characterized in that, include: The boot cover (2) has a receiving space defined by its side wall (5) and bottom wall (6) for receiving the foot, the side wall (5) being connected to the bottom wall (6) and adapted to move relative to the bottom wall (6) to open or close the receiving space; the boot cover (2) has two sets of through holes penetrating its interior and exterior, each set of through holes including two through holes at corresponding positions; A tightening strap (1) passes through two through holes in one of the through-hole groups from the inside out and then back in, with its two ends crossing each other and passing through two through holes in another through-hole group from the inside out. It is adapted to wrap around the outer surface of the boot sleeve (2) to tighten the sidewall (5); and A connecting component is provided on the tightening band (1) and detachably connected to both ends of the tightening band (1). It is adapted to connect both ends of the tightening band (1) after the tightening band (1) tightens the side wall (5) so that the accommodating space remains closed.

2. The foot-tightening structure as described in claim 1, characterized in that, The sidewall (5) is provided with a forefoot portion (20) covering the front of the foot. The two through hole groups include a first through hole group and a second through hole group. The first through hole group includes a first through hole (11) and a second through hole (12) respectively provided on the bottom wall (6). The second through hole group includes a third through hole (13) and a fourth through hole (14) respectively provided on the forefoot portion (20).

3. The foot tightening structure as described in claim 2, characterized in that, The sidewall (5) is provided with a heel portion (21), an ankle portion (22) and a calf portion (23) covering the back of the foot. The two ends of the tightening strap (1) extend from the third through hole (13) and the fourth through hole (14) to the outside of the boot cover (2), and then extend along the forefoot portion (20) to the bottom wall (6), and further extend along the bottom wall (6) to the heel portion (21) and ankle portion (22) on the other side of the sidewall (5), and then wrap around the calf portion (23).

4. The foot tightening structure as described in claim 3, characterized in that, The lower leg (23) is provided with a set of fixed through holes, which includes a first fixed through hole (31) and a second fixed through hole (32) with two corresponding positions. The two ends of the tightening strap (1) pass through the two fixed through holes in sequence in the lower leg (23).

5. The foot binding structure as described in claim 1, characterized in that, The connecting component is Velcro.

6. The foot binding structure as described in claim 1, characterized in that, The tightening band (1) is elastic.

7. A traction boot cover, comprising an outer boot cover (3), characterized in that, The outer boot cover (3) is located on the outside of the foot binding structure according to any one of claims 1 to 6, and the two together bind the user's feet and calves.

Images