Ankle joint assistive correction device

Abstract

The present application provides a kind of ankle joint auxiliary correction equipment, comprising: base, which is provided with correction device, the correction device includes installation box, the upper portion of installation box is fixedly connected with limit board, the inside of installation box is provided with baffle one, the bottom of baffle one is fixedly connected with fixed plate;Massage device, the massage device includes motor one, rotating seat one, cylinder, the output end of motor one is fixedly connected with driving gear, connecting rod one is rotatably connected with working gear;Rotating device, the rotating device includes motor two, sliding rail, the sliding rail is slidably connected with toothed plate, the toothed plate is meshingly connected with driven gear.The present application can automatically massage correction according to symptom, can control automatic exercise and autonomous exercise, and equipment angle can be adjusted, comfortable posture is selected to correct, and it is suitable for a variety of people to use.

Description

Technical Field

[0001] This invention belongs to the field of ankle joint correction technology, specifically an ankle joint auxiliary correction device. Background Technology

[0002] The ankle joint is the part of the human foot that connects to the leg. It consists of seven tarsal bones, plus the metatarsals of the foot and the bones of the lower leg. It is a weight-bearing joint in the human body and a key joint for lower limb movement. In daily life, the ankle joint is prone to sprains. For example, when walking downhill, the narrow posterior part of the trochlea enters the socket, the ankle joint becomes loose and can move laterally, and at this time, the ankle joint is prone to inversion injury. Ankle joint correction devices are devices for treating deformities, or orthodontic correction plates, which use physical methods to restore deformities to their correct position. Currently, some patients with ankle joint deformities, foot inversion or eversion, or due to hemiplegia or leg muscle abnormalities often need to use ankle joint correction devices. Existing ankle joint correction plates mainly achieve the angle of the correction plate by the engagement of a support rod and a locking groove. However, this method is prone to the support rod coming out of the locking groove, which may cause injury to the pedal and create some safety hazards. At the same time, most of them do not have the function of training the ankle joint, so the rehabilitation effect of the injured ankle joint is poor, and it is very inconvenient for patients to use, and they are prone to falls.

[0003] Existing technologies also include ankle joint correction assistive devices. For example, Chinese patent CN210125144U discloses an orthopedic ankle joint correction assistive device, including a correction plate with an adjustable tilt angle and an adjustment mechanism for adjusting the tilt angle of the correction plate. Two correction plates are arranged in parallel, each with a contact member for abutting the heel, and the contact member has a U-shaped cross-section. A pair of limiting plates are also spaced apart on the correction plate, abutting the sides of the foot, and a soft padding layer is provided on the inner side of the limiting plates. The limiting plates can move along the width of the correction plate, and a positioning part is provided on the correction plate to limit the continued movement of the limiting plates. This orthopedic ankle joint correction assistive device prevents the foot from slipping and causing instability during the assisted correction process; it ensures that the foot and leg are positioned on the same vertical plane, preventing the foot from being placed diagonally on the limiting plates.

[0004] However, the orthopedic ankle joint correction assistive device in the above technical solution still requires the patient's foot to step directly on the correction board for training, and manual adjustment is required. It is not very suitable for some patients with limited mobility and there is a risk of falling due to improper use.

[0005] In summary, the present invention provides an ankle joint assistive correction device to solve the above-mentioned problems. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides an ankle joint assistive correction device to solve the problems of inconvenience in use, poor training effect, and safety hazards in existing technologies.

[0007] An ankle joint assistive correction device, comprising:

[0008] A base is provided with a correction device, which includes a mounting box rotatably connected to the base. A limit plate is fixedly connected to the upper part of the mounting box, and a correction plate is rotatably connected to the bottom of the mounting box. A partition 1 is provided inside the mounting box and near the correction plate. Two partitions 2 are provided inside the mounting box, and the two partitions 2 and partition 1 are perpendicular to each other. A fixing plate is fixedly connected to the bottom of partition 1, and a sliding groove is provided on partition 1.

[0009] A massage device is mounted on the first partition. The massage device includes a motor, a rotating seat, and a cylinder. The motor is fixedly connected to the inner wall of the mounting box. The bottom end of the rotating seat is fixedly connected to the fixed plate. The cylinder is fixedly connected to the inner wall of the side of the mounting box and located above the rotating seat. The output end of the cylinder is rotatably connected to a connecting rod. The end of the connecting rod away from the cylinder is rotatably connected to the rotating seat. A drive gear and a working gear are rotatably connected to the connecting rod. The drive gear and the working gear are meshed and connected. The drive gear is located below the working gear. The center of the drive gear is fixedly connected to the output end of the motor. Massage belts are provided on the outer sides of the two second partitions. The massage belts are made of elastic material and are hollow inside. A through groove is provided at the connection position between the second partition and the massage belt and the massage belt is connected. A monitoring instrument is provided above the second partition.

[0010] A rotating device is installed inside the second partition. The rotating device includes a second motor and a slide rail. The second motor is fixedly connected to the inner wall of the side of the mounting box. The slide rail is fixedly connected to the partition. A toothed plate is slidably connected to the slide rail. A driven gear is meshed on the toothed plate. A rotating shaft is fixedly connected to the side of the driven gear away from the second motor. The rotating shaft passes through the straightening plate and is fixedly connected to the straightening plate.

[0011] Furthermore, the rotating seat, cylinder, connecting rod, and working gear are all provided in pairs, and are symmetrically distributed along the longitudinal section line of the partition plate.

[0012] Furthermore, a second connecting rod is rotatably connected to the connection point of the first connecting rod and the working gear. A first connecting gear is rotatably connected to the middle of the second connecting rod. A second connecting gear is rotatably connected to the end of the second connecting rod away from the working gear. A third connecting rod is rotatably connected to the other side of the connection point between the second connecting rod and the second connecting gear. A third connecting rod is rotatably connected to the connection point between the second connecting rod and the second connecting gear. The end of the third connecting rod away from the second connecting gear is rotatably connected to the first connecting rod on the side away from the motor. The connection position between the third connecting rod and the first connecting rod is located at the center of the working gear on the side away from the motor. The working gear meshes with the first connecting gear, the first connecting gear meshes with the second connecting gear, and the second connecting gear meshes with the working gear on the side away from the motor.

[0013] Furthermore, each of the two working gears is fixedly connected to a connecting shaft at its center. The connecting shaft is slidably connected within the sliding groove. A rotating disk is fixedly connected to the end of the connecting shaft away from the working gear, and a massage block is installed on the outer side of the rotating disk.

[0014] Furthermore, a rotating rod is fixedly connected to the output end of the second motor, and a slider is rotatably connected to the end of the rotating rod away from the second motor. A connecting slide rail is fixedly connected to the side of the toothed plate close to the second motor, and the slider is slidably connected within the connecting slide rail.

[0015] Furthermore, the inner wall of the limiting plate is made of a flexible material, and multiple sets of elastic bands are provided on the limiting plate and the correction plate, with Velcro at the connection points of the elastic bands.

[0016] Furthermore, a protective pad is provided on the side of the correction plate that is close to the limiting plate.

[0017] Furthermore, a torsion spring is provided at the other end of the rotating shaft, and the other end of the torsion spring is fixedly connected to the inner wall of the side of the mounting box.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention utilizes the coordinated operation of a mounting box, a limiting plate, a monitoring instrument, a correction plate, connecting rod one, connecting rod two, connecting rod three, connecting rod four, a drive gear, a working gear, a connecting shaft, connecting gear one, connecting gear two, and a massage belt. The monitoring instrument can monitor the degree of ankle joint deformity in real time, and adjust the tightness of the massage belt in a timely manner to ensure that the massage belt always maintains an appropriate tightness. The position of the massage belts on both sides can be adjusted as needed to provide appropriate squeezing massage and promote the correction effect.

[0020] 2. This invention utilizes the interaction between the motor, slide rail, gear plate, driven gear, rotating shaft, rotating rod, slider, and connecting slide rail to enable the periodic reciprocating rotation between the limiting plate and the correction plate. This eliminates the need for people with mobility impairments to stand for correction, making it convenient to use.

[0021] 3. This invention allows patients to freely rotate and exercise their leg muscles by working together with the limiting plate, the corrective plate, the spring, the elastic band one, the Velcro one, the elastic band two, the Velcro two, and the protective pad.

[0022] 4. The present invention, through the base, limiting plate and mounting box, allows the angle of the correction device to be freely adjusted during use, and can be used by users in standing, sitting or sleeping positions. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the orthogonal measurement of the correction device in this invention;

[0025] Figure 2 This is a schematic diagram of the interior of the mounting box in this invention;

[0026] Figure 3 This is a connection diagram of the massage device in this invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the massage belt in this invention;

[0028] Figure 5 This is a schematic diagram of the connection of the correction plate in this invention;

[0029] Figure 6 This is a structural diagram of the rotating device in this invention.

[0030] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0031] 1. Base; 2. Correction device; 3. Massage device; 4. Rotation device; 21. Mounting box; 22. Limiting plate; 23. Correction plate; 24. Elastic band; 25. Velcro; 31. Motor 1; 32. Rotating seat 1; 33. Cylinder; 34. Connecting rod 1; 35. Connecting rod 2; 36. Connecting rod 3; 37. Rotating disc; 41. Motor 2; 42. Slide rail; 43. Gear plate; 44. Driven gear; 45. Rotation 46. ​​Rod; 47. Slider; 48. Connecting slide rail; 211. Torsion spring; 212. Partition 1; 213. Partition 2; 214. Fixing plate; 215. Massage belt; 216. Monitor; 347. Drive gear; 348. Working gear; 349. Connecting shaft; 350. Connecting gear 1; 361. Connecting gear 2; 371. Massage block; 441. Rotating shaft; 2111. Sliding groove; 2121. Through groove. Detailed Implementation

[0032] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0033] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] like Figure 1-6 As shown, an ankle joint assistive correction device includes:

[0036] A base 1 is provided with a correction device 2. The correction device 2 includes a mounting box 21, which is rotatably connected to the base 1. A limit plate 22 is fixedly connected to the upper part of the mounting box 21, and a correction plate 23 is rotatably connected to the bottom of the mounting box 21. A partition 211 is provided inside the mounting box 21 and near the correction plate 23. Two partitions 212 are provided inside the mounting box 21, and the two partitions 212 and partition 211 are perpendicular to each other. A fixing plate 213 is fixedly connected to the bottom of partition 211, and a sliding groove 2111 is provided on partition 211.

[0037] Massage device 3 is mounted on partition 211. Massage device 3 includes motor 31, rotating seat 32, and cylinder 33. Motor 31 is fixedly connected to the inner wall of mounting box 21. The bottom end of rotating seat 32 is fixedly connected to fixing plate 213. Cylinder 33 is fixedly connected to the inner side wall of mounting box 21 and located above rotating seat 32. A connecting rod 34 is rotatably connected to the output end of cylinder 33. The end of connecting rod 34 away from cylinder 33 is rotatably connected to rotating seat 32. A drive gear 341 and a working gear 342 are rotatably connected to the upper part of the partition plate 212. The drive gear 341 and the working gear 342 are meshed and connected, and the drive gear 341 is located below the working gear 342. The center of the drive gear 341 is fixedly connected to the output end of the motor 31. Massage belts 214 are provided on the outer side of the two partition plates 212. The massage belts 214 are made of elastic material and are hollow inside. A through groove 2121 is opened at the connection position between the partition plate 212 and the massage belt 214 and is connected. A monitoring instrument 215 is provided above the partition plate 212.

[0038] A rotating device 4 is installed inside the second partition 212. The rotating device 4 includes a second motor 41 and a slide rail 42. The second motor 41 is fixedly connected to the inner side wall of the mounting box 21. The slide rail 42 is fixedly connected to the first partition 211. A toothed plate 43 is slidably connected to the slide rail 42. A driven gear 44 is meshed on the toothed plate 43. A rotating shaft 441 is fixedly connected to the side of the driven gear 44 away from the second motor 41. The rotating shaft 441 passes through the straightening plate 23 and is fixedly connected to the straightening plate 23.

[0039] In one embodiment of the present invention, the rotating seat 32, the cylinder 33, the connecting rod 34, and the working gear 342 are all provided in twos and are symmetrically distributed along the longitudinal section line of the partition 211, so that the massage belts 214 on both sides can work together.

[0040] As one embodiment of the present invention, such as Figure 2-3 As shown, a second connecting rod 35 is rotatably connected to the connection point of connecting rod 34 and the working gear 342. A connecting gear 351 is rotatably connected to the middle of connecting rod 35. A connecting gear 361 is rotatably connected to the end of connecting rod 35 away from the working gear 342. A third connecting rod 36 is rotatably connected to the other side of the connection point between connecting rod 35 and connecting gear 361. A third connecting rod 36 is rotatably connected to the connection point between connecting rod 35 and connecting gear 361. The end of connecting rod 36 away from connecting gear 361 is rotatably connected to connecting rod 34 on the side away from motor 31. The connection position of connecting rod 36 and connecting rod 34 is located on the working gear on the side away from motor 31. At the center of wheel 342, the working gear 342 meshes with the connecting gear 1 351, the connecting gear 1 351 meshes with the connecting gear 2 361, and the connecting gear 2 361 meshes with the working gear 342 on the side away from motor 1 31. When cylinder 33 works, it drives connecting rod 1 34 to move up and down along the pushing axis. When connecting rod 1 34 swings left and right, connecting rod 2 35 swings accordingly. The centers of the working gear 342, connecting gear 1 351, and connecting gear 2 361 are always on a straight line. The distance between them is limited and fixed by connecting rod 2 35. Connecting rod 3 36 constrains the position of the working gear 342 and connecting gear 2 361 on the other side.

[0041] In one embodiment of the present invention, the centers of the two working gears 342 are respectively fixedly connected to a connecting shaft 343. The connecting shaft 343 is slidably connected in the sliding groove 2111, which allows the massage belt 214 to move left and right along the sliding groove 2111. A rotating disk 37 is fixedly connected to the end of the connecting shaft 343 away from the working gears 342. A massage block 371 is installed on the outside of the rotating disk 37. After the rotating disk 37 rotates with the connecting shaft 343, the massage block 371 squeezes the massage belt 214, thereby achieving a massage effect.

[0042] As one embodiment of the present invention, such as Figure 6As shown, a rotating rod 45 is fixedly connected to the output end of the second motor 41. A slider 46 is rotatably connected to the end of the rotating rod 45 away from the second motor 41. A connecting slide rail 47 is fixedly connected to the side of the toothed plate 43 near the second motor 41. The slider 46 is slidably connected within the connecting slide rail 47. When the slider 46 is located at both ends of the slide rail 42, the toothed plate 43 is located directly below the driven gear 44. When the slider 46 is located in the middle of the connecting slide rail 47, the toothed plate 43 is located at both ends of the connecting slide rail 47. When the second motor 41 is working, it drives the rotating rod 45 to rotate, thereby driving the slider 46 to rotate. Due to the restriction of the connecting slide rail 47, the toothed plate 43 is driven to move left and right periodically, thereby driving the driven gear 44 to rotate periodically and repeatedly, thereby driving the correction plate 23 and the limiting plate 22 to rotate repeatedly at a certain angle, automatically correcting the ankle joint.

[0043] In one embodiment of the present invention, the inner wall of the limiting plate 22 is made of a flexible material, and multiple sets of elastic bands 24 are provided on the limiting plate 22 and the straightening plate 23. Velcro 25 is provided at the connection of the elastic bands 24, and a protective pad 231 is provided on the side of the straightening plate 23 close to the limiting plate 22, so as to prevent loosening, slippage and other situations that may occur during the straightening process.

[0044] As one embodiment of the present invention, a torsion spring 48 is provided at the other end of the rotating shaft 441. The other end of the torsion spring 48 is fixedly connected to the inner wall of the side of the mounting box 21. After the rotating shaft 441 rotates, the torsion spring 48 will reset it. Therefore, the patient can perform rotation exercises on his own to exercise the ankle joint and leg muscle groups, improve muscle support, and prevent re-injury after rehabilitation.

[0045] Specific working principle:

[0046] In this invention, such as Figure 1-6 As shown, when using it, first use Velcro 25 to fasten and fix it with elastic band 24 to prevent loosening or slippage that may occur during the correction process. At this time, the monitor 215 is activated to scan the ankle joint inside the limiting plate 22, detect the degree of deformation and distortion of the ankle joint and record it for comparison with the normal state. After obtaining the data that needs to be corrected, it enters the working state.

[0047] Based on the test results, the cylinder 33 is adjusted, thereby adjusting the position of the working gears 342 on both sides, driving the connecting rod 34 to move left and right along the push rod direction, thereby driving the connecting shaft 343, rotating disk 37, and massage block 371 to move, thus changing the position of the massage belt 214, so that the massage belt 214 always maintains a comfortable tightness, and can be used for a long time. According to the recovery status of ankle joint deformity after use, a scan and adjustment are performed before each use to improve the correction effect.

[0048] The motor 31 can be started by controlling the remote control, which drives the gear 341 to rotate the working gear 342, which in turn drives the connecting gear 351 to rotate, thereby driving the connecting gear 361 that meshes with it, and finally driving the other working gear 342 to rotate. This causes the working gears 342 on both sides to rotate, thereby driving the rotating disc 37 and the massage block 371 to rotate, squeezing the massage belt 214 to massage and correct the ankle joint inside.

[0049] Simultaneously, motor 41 starts and drives the rotating rod 45 to rotate through its output end. The rotating rod 45 then drives the toothed plate 43 on the connecting slide rail 47 to move via the slider 46. This, in turn, drives the driven gear 44, which is meshed with the toothed plate 43, to rotate. As the connecting slide rail 47 moves, the slider 46 slides within it. When the slider 46 slides to one end of the connecting slide rail 47, the rotating rod 45 continues to rotate, causing the slider 46 to drive the connecting slide rail 47 to move in the opposite direction. This cyclical rotation causes the corrective plate 23 and the limiting plate 22 to rotate repeatedly at a certain angle, automatically correcting the ankle joint and facilitating use by patients with limited mobility. Patients can also perform rotational exercises to strengthen their ankle joint and leg muscles, improve leg support, and prevent re-injury after rehabilitation. The base 1 and the mounting box 21 are rotatably connected, allowing adjustment of the angle between the base 1 and the corrective device, enabling patients to use the device in various postures and making it suitable for a variety of situations.

[0050] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An ankle joint assistive correction device, characterized in that, include: A base (1) is provided with a correction device (2). The correction device (2) includes a mounting box (21). The mounting box (21) is rotatably connected to the base (1). A limit plate (22) is fixedly connected to the upper part of the mounting box (21). A correction plate (23) is rotatably connected to the bottom of the mounting box (21). A partition plate (211) is provided inside the mounting box (21) and near the correction plate (23). Two partition plates (212) are provided inside the mounting box (21). The two partition plates (212) and the partition plate (211) are perpendicular to each other. A fixing plate (213) is fixedly connected to the bottom of the partition plate (211). A sliding groove (2111) is provided on the partition plate (211). A massage device (3) is mounted on the partition plate (211). The massage device (3) includes a motor (31), a rotating seat (32), and a cylinder (33). The motor (31) is fixedly connected to the inner wall of the mounting box (21). The bottom end of the rotating seat (32) is fixedly connected to the fixing plate (213). The cylinder (33) is fixedly connected to the inner wall of the side of the mounting box (21) and located above the rotating seat (32). A connecting rod (34) is rotatably connected to the output end of the cylinder (33). The end of the connecting rod (34) away from the cylinder (33) is rotatably connected to the rotating seat (32). (34) is rotatably connected to a drive gear (341) and a working gear (342), which mesh with each other. The drive gear (341) is located below the working gear (342). The center of the drive gear (341) is fixedly connected to the output end of the motor (31). Massage belts (214) are provided on the outer sides of the two partitions (212). The massage belts (214) are made of elastic material and are hollow inside. A through groove (2121) is provided at the connection position between the partitions (212) and the massage belts (214) and they are connected. A monitoring instrument (215) is provided above the partitions (212). A rotating device (4) is installed inside the partition plate 2 (212). The rotating device (4) includes a motor 2 (41) and a slide rail (42). The motor 2 (41) is fixedly connected to the inner wall of the side of the mounting box (21). The slide rail (42) is fixedly connected to the partition plate 1 (211). A toothed plate (43) is slidably connected to the slide rail (42). A driven gear (44) is meshed on the toothed plate (43). A rotating shaft (441) is fixedly connected to the side of the driven gear (44) away from the motor 2 (41). The rotating shaft (441) passes through the straightening plate (23) and is fixedly connected to the straightening plate (23). The number of the rotating seat (32), cylinder (33), connecting rod (34), and working gear (342) are all provided in two, and are symmetrically distributed along the longitudinal section line of the partition plate (211); A connecting rod 2 (35) is rotatably connected to the connection between the connecting rod 1 (34) and the working gear (342). A connecting gear 1 (351) is rotatably connected to the middle of the connecting rod 2 (35). A connecting gear 2 (361) is rotatably connected to the end of the connecting rod 2 (35) away from the working gear (342). A connecting rod 3 (36) is rotatably connected to the other side of the connection between the connecting rod 2 (35) and the connecting gear 2 (361). A connecting rod 3 (36) is rotatably connected to the connection between the connecting rod 2 (35) and the connecting gear 2 (361). 36) The end away from the connecting gear 2 (361) is rotatably connected to the connecting rod 1 (34) on the side away from the motor 1 (31). The connection position of the connecting rod 3 (36) and the connecting rod 1 (34) is located at the center of the working gear (342) on the side away from the motor 1 (31). The working gear (342) is meshed with the connecting gear 1 (351). The connecting gear 1 (351) is meshed with the connecting gear 2 (361). The connecting gear 2 (361) is meshed with the working gear (342) on the side away from the motor 1 (31). The two working gears (342) are respectively fixedly connected to the center of the connecting shaft (343), which is slidably connected in the sliding groove (2111). The end of the connecting shaft (343) away from the working gear (342) is fixedly connected to the rotating disk (37), and a massage block (371) is installed on the outside of the rotating disk (37).

2. The ankle joint assistive correction device as described in claim 1, characterized in that, The output end of the second motor (41) is fixedly connected to a rotating rod (45). The end of the rotating rod (45) away from the second motor (41) is rotatably connected to a slider (46). The toothed plate (43) is fixedly connected to a connecting slide rail (47) on the side close to the second motor (41). The slider (46) is slidably connected in the connecting slide rail (47).

3. The ankle joint assistive correction device as described in claim 1, characterized in that, The inner wall of the limiting plate (22) is made of flexible material. Multiple sets of elastic bands (24) are provided on the limiting plate (22) and the correction plate (23). Velcro (25) is provided at the connection of the elastic bands (24).

4. The ankle joint assistive correction device as described in claim 1, characterized in that, The correction plate (23) has a protective pad (231) on the side close to the limiting plate (22).

5. The ankle joint assistive correction device as described in claim 1, characterized in that, A torsion spring (48) is provided at the other end of the rotating shaft (441), and the other end of the torsion spring (48) is fixedly connected to the inner wall of the side of the mounting box (21).

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