Ankle joint contracture drafting supporting tool

Abstract

The invention provides an ankle joint contracture drafting supporting tool, and belongs to the field of medical supports. Comprising a box body, a first fixing sleeve and a second fixing sleeve, an elastic belt is fixedly connected between the first fixing sleeve and the second fixing sleeve, a connecting base is fixedly connected to the outer surface of the right end of the second fixing sleeve, a core shaft is arranged on the outer side of the connecting base, a rotating wheel is fixedly connected to the outer surface of the core shaft, and a traction assembly is arranged on the outer side of the rotating wheel; the traction assembly comprises a notch formed in the side edge of the rotating wheel. By arranging the traction assembly, positioning holes in different positions are selected according to the recovery condition of a patient, so that a rotating wheel can rotate by different angles, at the moment, a traction rope can be stretched by different lengths, the resistance applied to the ankle through the traction rope also has large difference, and therefore the treatment recovery requirements of the patient in different stages can be met; the flexibility and the practicability of the traction protective tool in the using process are effectively improved, and then the application range of the protective tool can be widened.

Description

Technical Field

[0001] The present invention relates to the field of medical stents, and more specifically, to an ankle contracture stretching and supporting device. Background Art

[0002] Ankle contracture refers to a situation where soft tissues around the ankle joint, such as muscles, tendons, joint capsules, etc., undergo pathological changes due to various reasons, resulting in adaptive shortening of the soft tissues and thus causing joint movement disorders. For patients with ankle contracture, corrective postures, traction exercises, and physical therapy means are usually adopted to relieve symptoms.

[0003] In the prior art, professional treatment equipment is usually used to assist in treatment and rehabilitation. For example, a Chinese patent with publication number CN216417454U discloses an acupoint massage type ankle external fixation brace, which can play a role in fixing and protecting the ankle joint during fractures, preventing and correcting deformities, preventing secondary displacement of fractures and Achilles tendon contracture, and at the same time having the therapeutic effect of traditional Chinese medicine acupoint massage, which can effectively relieve pain and promote fracture healing and soft tissue repair.

[0004] When the existing ankle contracture supporting devices are in use, although they can play a role in fixing and protecting the ankle joint, however, during the clinical treatment process, as the patient's ankle joint gradually recovers, the intensity of exercise rehabilitation for the patient's ankle joint also needs to be gradually increased. However, when the existing ankle contracture supporting devices are in use, they cannot adjust the exercise intensity of the ankle joint according to the patient's recovery degree. Therefore, it is necessary to frequently replace the supporting devices, which has great limitations in the actual application scope. Summary of the Invention

[0005] Aiming at the problem that the exercise intensity of the supporting user cannot be flexibly adjusted in the prior art, the purpose of the present invention is to provide an ankle contracture stretching and supporting device.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] An ankle contracture stretching and supporting device, comprising a first fixing sleeve and a second fixing sleeve. An elastic band is fixedly connected between the first fixing sleeve and the second fixing sleeve. A connecting seat is fixedly connected to the outer surface of the right end of the second fixing sleeve. A core shaft is arranged outside the connecting seat. A runner is fixedly connected to the outer surface of the core shaft. A traction assembly is arranged outside the runner.

[0008] The traction assembly includes a notch formed on the side of the runner. A stop block is fixedly connected to the inner surface of the notch. A traction rope is fixedly connected to the outer surface of the stop block. The traction rope extends through the notch and is fixedly connected to the outer surface of the second fixed sleeve. A clamping portion is provided on the outer surface of the runner. The runner is movably connected to a pull rod through the clamping portion. The lower end of the pull rod is connected to the first fixed sleeve through a hinge portion.

[0009] Optionally, the clamping portion includes a positioning hole formed on the outer surface of the runner. A positioning rod is clamped and connected to the inner side of the positioning hole. A bolt is threadedly connected to one end of the positioning rod away from the runner. The outer surface of the positioning rod is rotatably connected to a swing rod. The number of the positioning holes is several groups and is distributed in an annular array.

[0010] Optionally, the hinge portion includes a movable rod rotatably connected to the lower end of the swing rod. A traction portion is rotatably connected to the middle of the outer surface of the movable rod. The lower end of the traction portion is fixedly connected to the outer surface of the upper end of the first fixed sleeve. The traction rope is made of an elastic material. The elastic band is in an arc shape.

[0011] Optionally, an adjusting assembly is provided between the core shaft and the connecting seat. The adjusting assembly includes a guide sleeve rotatably connected to the outer surface of the core shaft. The outer surface of the guide sleeve is inclined. A through hole is formed in the inner side of the connecting seat. The core shaft passes through the front and rear sections of the connecting seat through the through hole. The connecting seat is fixedly connected with a retaining ring through the through hole. Part of the outer surface of the guide sleeve is rotatably connected to the inner surface of the through hole.

[0012] Optionally, an inner surface of the retaining ring is in screw drive connection with a movable sleeve. A friction block is slidably connected to the inner surface of the through hole. The friction block is rotatably connected to the movable sleeve. The outer surface of the friction block is in sliding contact with the outer surface of the guide sleeve on the side away from the through hole. Pressing cracks are formed through the surface of the guide sleeve. The number of the pressing cracks is several groups and is distributed in an annular array. The guide sleeve is in a circular ring shape.

[0013] Optionally, a limiting assembly is provided inside the connecting seat. The limiting assembly includes a chute formed through the inner side of the connecting seat. A movable plate is slidably connected to the inner side of the chute. A tooth groove is formed on the outer surface of the movable plate. A supporting rod is rotatably connected through the lower side of the movable plate. The supporting rod is in rotational contact with the outer surface of the lower end of the traction rope.

[0014] Optionally, an installation groove is embedded in the inner side of the connecting seat. A driving rod is rotatably connected to the inner side of the installation groove. A gear is fixedly connected to the outer surface of the driving rod. The gear is in meshing transmission connection with the tooth groove. The front end of the driving rod penetrates to the outside of the connecting seat and is fixedly connected with a knob. A locking sleeve is threadedly connected to the outer surface of the driving rod on the outside of the connecting seat. The locking sleeve is in contact with the outer surface of the connecting seat.

[0015] Optionally, an air guiding component is arranged on the inner side of the elastic band. The air guiding component includes a cavity embedded in the inner side of the elastic band. A folding groove is formed on the outer surface of the upper end of the elastic band, and the folding groove and the cavity are staggered. An overflow groove is embedded in the inner side of the elastic band, and both ends of the overflow groove are communicated with the inside of the cavity.

[0016] Optionally, the overflow groove extends into the first fixing sleeve. An air outlet hole is fixedly connected to the upper inner surface of the first fixing sleeve. A one-way air inlet pipe is fixedly connected to the outer surface of the upper end of the first fixing sleeve. Both the one-way air inlet pipe and the air outlet hole are communicated with the inside of the overflow groove. A support strip is fixedly connected to the outer surface of the upper end of the elastic band.

[0017] Optionally, a first protective sleeve is fixedly connected to the left end of the first fixing sleeve. A second protective sleeve is fixedly connected to the outer surface of the lower end of the second fixing sleeve. A traction belt is fixedly connected between the first protective sleeve and the second protective sleeve. Both the first protective sleeve and the second protective sleeve are arc-shaped. Both the first fixing sleeve and the second fixing sleeve are made of elastic materials. The number of the pull rods, the rotating wheels and the traction ropes is two groups and they are symmetrically distributed on both sides of the connecting seat.

[0018] The technical solution provided by the present invention has at least the following beneficial effects compared with the prior art:

[0019] In the above solution, by setting the traction component, different positioning holes at different positions can be selected according to the patient's recovery situation, so that the rotating wheel can rotate at different angles. At this time, the traction rope will be stretched by different lengths, and there are also great differences in the resistance applied to the ankle by the traction rope, so as to meet the treatment and recovery needs of patients in different stages, effectively improving the flexibility and practicality of the traction brace during use, and further helping to expand the application range of the brace.

[0020] By setting the adjusting component, the rotational resistance of the mandrel and the rotating wheel can be flexibly adjusted, so that when the patient's ankle joint is undergoing movement rehabilitation, the movement resistance of the ankle joint can be flexibly adjusted, thereby gradually increasing the movement intensity of the patient's ankle joint, and further effectively improving the auxiliary treatment effect for patients with ankle joint contracture.

[0021] By setting the air guiding component, during the movement rehabilitation of the patient's ankle joint, with the continuous pulling of the patient's sole, the effective circulation of gas can be realized, thereby effectively reducing the probability of overheating inside the first fixing sleeve 11 due to long-term movement, and further helping to reduce the discomfort of the patient during the traction rehabilitation of the ankle joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0023] Figure 1 Schematic diagram of the overall structure of the present invention Figure 1 ;

[0024] Figure 2 Top view of the overall structure of the present invention;

[0025] Figure 3 Schematic diagram of the overall structure of the present invention Figure 2 ;

[0026] Figure 4 Schematic diagram of the internal structure of the runner of the present invention;

[0027] Figure 5 Of the present invention Figure 2 Sectional view taken along line A-A in;

[0028] Figure 6 Of the present invention Figure 2 Sectional view taken along line B-B in;

[0029] Figure 7 Of the present invention Figure 6 Enlarged schematic view at C in;

[0030] Figure 8 Of the present invention Figure 1 Enlarged schematic view at D in;

[0031] Figure 9 Of the present invention Figure 5 Enlarged schematic view at E in;

[0032] Figure 10 Of the present invention Figure 6 Enlarged schematic view at F in.

[0033] [Reference numerals]

[0034] 11. First fixing sleeve; 12. First sheath; 13. Traction belt; 14. Second sheath; 15. Second fixing sleeve; 16. Traction seat; 17. Movable rod; 18. Pull rod; 19. Elastic band; 20. Cavity; 21. Connecting seat; 22. Runner; 23. Positioning rod; 24. Stopper; 25. Bolt; 26. Chute; 27. Notch; 28. Positioning hole; 29. Movable plate; 30. Installation groove; 31. Gear; 32. Driving rod; 33. Tooth groove; 34. Knob; 35. Locking sleeve; 36. Air outlet; 37. Support rod; 38. Traction rope; 39. Core shaft; 40. Guide sleeve; 41. Friction block; 42. Retaining ring; 43. Movable sleeve; 44. Compression crack; 45. Overflow groove; 46. Folding groove; 47. One-way intake pipe; 48. Support strip; 49. Through hole.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are labeled in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structures, devices, and environments. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed implementation manners

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0037] It should be noted that in the specification, the mention of "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicates that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe specific features, structures, or characteristics, the implementation of such features, structures, or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0038] Generally, terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that may not be explicitly described.

[0039] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intermediate features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intermediate features or layers therebetween.

[0040] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used in this document for convenience of description to describe the relationship between one element or feature and another or multiple other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptors used herein may be similarly interpreted accordingly.

[0041] As Figures 1 to 10 shown, an embodiment of the present invention provides an ankle contracture stretching and supporting appliance, including a first fixing sleeve 11 and a second fixing sleeve 15. An elastic band 19 is fixedly connected between the first fixing sleeve 11 and the second fixing sleeve 15. A connecting seat 21 is fixedly connected to the outer surface of the right end of the second fixing sleeve 15. A mandrel 39 is arranged outside the connecting seat 21. A runner 22 is fixedly connected to the outer surface of the mandrel 39. A traction assembly is arranged outside the runner 22.

[0042] The traction assembly includes a notch 27 opened on the side of the runner 22. A stop block 24 is fixedly connected to the inner surface of the notch 27. A traction rope 38 is fixedly connected to the outer surface of the stop block 24. The traction rope 38 is guided and extended through the notch 27 and then fixedly connected to the outer surface of the second fixing sleeve 15. A clamping portion is arranged on the outer surface of the runner 22. The runner 22 is movably connected to a pull rod 18 through the clamping portion. The lower end of the pull rod 18 is connected to the first fixing sleeve 11 through a hinge portion.

[0043] The clamping portion includes a positioning hole 28 opened on the outer surface of the runner 22. A positioning rod 23 is clamped and connected inside the positioning hole 28. A bolt 25 is threadedly connected to one end of the positioning rod 23 away from the runner 22. The outer surface of the positioning rod 23 is rotatably connected to a swing rod. The number of the positioning holes 28 is several groups and is distributed in a circular array.

[0044] The hinge portion includes a movable rod 17 rotatably connected to the lower end of a swing rod. A traction portion is rotatably connected to the middle of the outer surface of the movable rod 17. The lower end of the traction portion is fixedly connected to the outer surface of the upper end of the first fixing sleeve 11. The traction rope 38 is made of an elastic material. The elastic band 19 is in an arc shape.

[0045] By adopting the above technical solution, when in use, the first fixing sleeve 11 is sleeved on the patient's foot sole and the second fixing sleeve 15 is sleeved on the patient's calf. Both the first fixing sleeve 11 and the second fixing sleeve 15 are made of elastic materials and can closely fit with the patient's foot sole and calf. When the patient's ankle joint is tractioned and stretched, the patient hooks the foot sole upward. At this time, the foot sole will drive the first fixing sleeve 11 to move upward synchronously. When the first fixing sleeve 11 moves, it will drive the traction seat 16 and the movable rod 17 to move synchronously. The first fixing sleeve 11 is hinged to the pull rod 18 through the traction seat 16 and the movable rod 17 and will pull the pull rod 18. The pull rod 18 is movably connected to the rotating wheel 22 through the positioning rod 23 and the positioning hole 28. The bolt 25 at one end of the positioning rod 23 can limit the pull rod 18, thereby reducing the probability of the pull rod 18 slipping off the surface of the positioning rod 23. The swing of the pull rod 18 can drive the rotating wheel 22 to rotate with the core shaft 39 as the fulcrum. The rotating wheel 22 fixedly supports the traction rope 38 through the stopper 24 in the notch 27. When the rotating wheel 22 rotates, it will wind the traction rope 38 in the notch 27. The other end of the traction rope 38 is fixedly connected to the second fixing sleeve 15. As the rotating wheel 22 rotates, it will stretch the traction rope 38. At this time, the elastic force of the traction rope 38 will be converted into the resistance that needs to be overcome during the traction of the patient's ankle joint, which is beneficial to the rehabilitation treatment of the patient's ankle joint.

[0046] When the patient returns the foot sole downward, the first fixing sleeve 11 will drive the pull rod 18 to move in the reverse direction, so that the rotating wheel 22 can be driven to rotate and reset in the reverse direction through the pull rod 18. In the actual application process, the number of positioning holes 28 is several groups. The operator can select the positioning holes 28 at different positions according to the patient's recovery situation, so that the rotating wheel 22 can rotate different angles. At this time, the traction rope 38 will be stretched by different lengths, and the resistance applied to the ankle by the traction rope 38 also has a large difference, so as to meet the treatment and recovery needs of patients in different stages, effectively improving the flexibility and practicality of the traction brace during use, and further helping to expand the application range of the brace.

[0047] As Figure 5 shown in Figure 9 As shown in the figure, an adjusting component is arranged between the core shaft 39 and the connecting seat 21. The adjusting component includes a guide sleeve 40 rotatably connected to the outer surface of the core shaft 39. The outer surface of the guide sleeve 40 is inclined. A through hole 49 is opened inside the connecting seat 21. The core shaft 39 passes through the front and rear ends of the connecting seat 21 through the through hole 49. The connecting seat 21 is fixedly connected with a retaining ring 42 through the through hole 49. Part of the outer surface of the guide sleeve 40 is rotatably connected with the inner surface of the through hole 49.

[0048] The inner surface of the retaining ring 42 is in spiral transmission connection with a movable sleeve 43. The inner surface of the through hole 49 is in sliding connection with a friction block 41. The friction block 41 is rotationally connected to the movable sleeve 43. The side of the outer surface of the friction block 41 away from the through hole 49 is in sliding contact with the outer surface of the guide sleeve 40. The surface of the guide sleeve 40 is penetrated and provided with pressing cracks 44. The number of the pressing cracks 44 is several groups and is distributed in a circular array. The guide sleeve 40 is in a circular ring shape.

[0049] By adopting the above technical solution, in order to be able to flexibly adjust the rotation resistance of the runner 22, an adjustment assembly is provided. The connecting seat 21 rotationally supports the mandrel 39 through the adjustment assembly. When it is necessary to increase the rotation resistance of the runner 22, the operator rotates the movable sleeve 43. The movable sleeve 43 is in spiral transmission connection with the retaining ring 42. During the rotation process, it will drive the movable sleeve 43 to move along the axis direction of the mandrel 39. During the movement of the movable sleeve 43, it will push the friction block 41 to slide along the inner surface of the through hole 49. The friction block 41 will gradually come into sliding contact with the guide sleeve 40. Since the surface of the guide sleeve 40 is inclined, the gradual movement of the friction block 41 will extrude the guide sleeve 40, thereby increasing the friction force between the friction block 41 and the guide sleeve 40. The surface of the guide sleeve 40 is provided with several groups of pressing cracks 44 distributed in a circular array. The pressing cracks 44 can reduce the resistance of the guide sleeve 40 to generate deformation. The guide sleeve 40 will generate a certain degree of elastic deformation under the extrusion force of the friction block 41, so that the guide sleeve 40 fits more closely with the surface of the mandrel 39. By setting the adjustment assembly, the rotation resistance of the mandrel 39 and the runner 22 can be flexibly adjusted, so that when the patient's ankle joint is undergoing movement rehabilitation, the movement resistance of the ankle joint can be flexibly adjusted, thereby gradually increasing the movement intensity of the patient's ankle joint, and further effectively improving the auxiliary treatment effect for patients with ankle joint contracture.

[0050] As Figure 1 、 Figure 7 shown in Figure 8 the inner side of the connecting seat 21 is provided with a limiting assembly. The limiting assembly includes a sliding groove 26 penetrating through the inner side of the connecting seat 21. The inner side of the sliding groove 26 is in sliding connection with a movable plate 29. The outer surface of the movable plate 29 is provided with a tooth groove 33. The lower side of the movable plate 29 is penetrated and rotationally connected with a support rod 37. The support rod 37 is in rotational contact with the outer surface of the lower end of the traction rope 38.

[0051] An installation groove 30 is recessed and formed inside the connecting seat 21. A driving rod 32 is rotatably connected inside the installation groove 30. A gear 31 is fixedly connected to the outer surface of the driving rod 32. The gear 31 is in meshing transmission connection with a tooth groove 33. The front end of the driving rod 32 penetrates to the outside of the connecting seat 21 and is fixedly connected with a knob 34. A locking sleeve 35 is threadedly connected to the outer surface of the driving rod 32 outside the connecting seat 21. The locking sleeve 35 is in contact with the outer surface of the connecting seat 21.

[0052] By adopting the above technical solution, in order to further improve the flexibility of adjusting the movement intensity of the protective gear, a limiting component is provided. During operation, the operator rotates the locking sleeve 35. As the locking sleeve 35 is threadedly connected to the driving rod 32, it will be separated from the surface of the connecting seat 21 during rotation. Then, the operator rotates the driving rod 32 through the knob 34, so as to drive the gear 31 to rotate synchronously through the driving rod 32. The gear 31 is in meshing transmission connection with the tooth groove 33 on the surface of the movable plate 29. During rotation, it will drive the movable plate 29 to slide upward along the inside of the sliding groove 26. During the movement of the movable plate 29, it will drive the supporting rod 37 to move upward synchronously. The supporting rod 37 drives the traction rope 38 to deflect upward during the movement of the traction rope 38. The supporting rod 37 can play a good guiding role for the traction rope 38 during the movement of the traction rope 38, so that the movement of the traction rope 38 is more stable. By setting the limiting component to flexibly adjust the position of the supporting rod 37, the position of the traction rope 38 can be adjusted, so as to adjust the stretching length of the traction rope 38. When the initial length of the traction rope 38 is longer, the elastic force of the traction rope 38 that the runner 22 needs to overcome during rotation will also increase accordingly, so as to further improve the convenience of adjusting the rotation resistance of the runner 22, and further improve the convenience and flexibility during the use of the protective gear.

[0053] As Figure 6 shown in Figure 10 A gas guiding component is arranged inside the elastic band 19. The gas guiding component includes a cavity 20 recessed and formed inside the elastic band 19. A folding groove 46 is formed on the outer surface of the upper end of the elastic band 19. The folding groove 46 and the cavity 20 are alternately distributed. An overflow groove 45 is recessed and formed inside the elastic band 19. Both ends of the overflow groove 45 are communicated with the inside of the cavity 20.

[0054] The overflow groove 45 extends into the first fixing sleeve 11. An air outlet hole 36 is fixedly connected to the upper inner surface of the first fixing sleeve 11. A one-way air inlet pipe 47 is fixedly connected to the outer surface of the upper end of the first fixing sleeve 11. Both the one-way air inlet pipe 47 and the air outlet hole 36 are communicated with the inside of the overflow groove 45. A support strip 48 is fixedly connected to the outer surface of the upper end of the elastic band 19.

[0055] By adopting the above technical solution, in order to further improve the comfort of the patient during the ankle joint rehabilitation process, an air guiding component is provided. When the first fixing sleeve 11 flips upward along with the patient's foot sole, the elastic band 19 will bend to a certain extent. The folding grooves 46 on the surface of the elastic band 19 can reduce the resistance during the folding process of the elastic band 19. When the elastic band 19 bends, it will squeeze the cavity 20 inside the elastic band 19. At this time, the air inside several groups of cavities 20 will enter the overflow groove 45. Then, under the guiding action of the overflow groove 45, the gas will enter the first fixing sleeve 11 and then be discharged through the air outlet holes 36 inside the first fixing sleeve 11. The flowing of the gas through the ejected gas can realize the air circulation of the first fixing sleeve 11, thereby improving the air permeability and comfort of the first fixing sleeve 11 during use. When the elastic band 19 bends in the reverse direction, the internal space of the cavity 20 increases. At this time, a certain negative pressure will be generated inside the cavity 20, and the external air will enter the overflow groove 45 and the cavity 20 through the one-way intake pipe 47 on the surface of the first fixing sleeve 11, so as to fill the cavity 20 and the overflow groove 45 with an appropriate amount of air. During the ankle joint movement and rehabilitation process of the patient, with the continuous pulling of the patient's foot sole, the effective circulation of the gas can be realized, thereby effectively reducing the probability of the temperature inside the first fixing sleeve 11 being too high due to long-term movement, and further helping to reduce the discomfort of the patient during the ankle joint traction rehabilitation process.

[0056] As Figure 1 shown in Figure 2 As shown in the figure, the left end of the first fixing sleeve 11 is fixedly connected with a first sheath 12, and the outer surface of the lower end of the second fixing sleeve 15 is fixedly connected with a second sheath 14. A traction belt 13 is fixedly connected between the first sheath 12 and the second sheath 14. Both the first sheath 12 and the second sheath 14 are arc-shaped. Both the first fixing sleeve 11 and the second fixing sleeve 15 are made of elastic materials. The number of the pull rods 18, the rotating wheels 22 and the traction ropes 38 is two groups and they are symmetrically distributed on both sides of the connecting seat 21.

[0057] By adopting the above technical solution, the first sheath 12 covers other parts of the patient's foot sole, while the second sheath 14 covers the patient's calf. The first sheath 12 and the second sheath 14 can disperse the pressure during the movement of the patient's ankle joint, thereby avoiding the pressure concentrating on the positions of the first fixing sleeve 11 and the second fixing sleeve 15, and at the same time can play a certain protective effect on the patient's leg. The traction belt 13 can improve the stability of the first sheath 12 and the second sheath 14 during the movement process. The symmetric distribution of the pull rods 18, the rotating wheels 22 and the traction ropes 38 can effectively improve the force uniformity.

[0058] The working process of the technical solution provided by the present invention is as follows:

[0059] During use, the first fixing sleeve 11 is sleeved on the patient's sole, and the second fixing sleeve 15 is sleeved on the patient's calf. Then the patient hooks the sole upward. The connecting seat 21 rotatably supports the mandrel 39 through the adjusting assembly. The first fixing sleeve 11 is hinged to the pull rod 18 through the traction seat 16 and the movable rod 17 and will pull the pull rod 18. The swinging of the pull rod 18 can drive the runner 22 to rotate with the mandrel 39 as the fulcrum. During the rotation of the runner 22, the traction rope 38 will be wound in the notch 27. The elastic force of the traction rope 38 will be converted into the resistance that needs to be overcome during the traction of the patient's ankle joint, which is beneficial to the rehabilitation treatment of the patient's ankle joint. The adjusting assembly squeezes the guide sleeve 40 through the movement of the friction block 41, so that the guide sleeve 40 fits more closely to the surface of the mandrel 39. The traction rope 38 is deflected upward by the support rod 37. The support rod 37 can play a good guiding role for the traction rope 38 during the movement of the traction rope 38, so that the traction rope 38 moves more smoothly. By setting the limiting assembly to flexibly adjust the position of the support rod 37, the position of the traction rope 38 can be adjusted to facilitate the adjustment of the stretching length of the traction rope 38. When the elastic band 19 is bent, it will squeeze the cavity 20 inside the elastic band 19. The gas will enter the first fixing sleeve 11 under the guiding action of the overflow groove 45. The circulation of the gas in the first fixing sleeve 11 can be realized through the ejected gas, so as to improve the air permeability and comfort of the first fixing sleeve 11 during use.

[0060] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An ankle contracture stretching and supporting device, comprising a first fixing sleeve and a second fixing sleeve, characterized in that: An elastic band is fixedly connected between the first fixing sleeve and the second fixing sleeve. A connecting seat is fixedly connected to the outer surface of the right end of the second fixing sleeve. A mandrel is arranged outside the connecting seat. A runner is fixedly connected to the outer surface of the mandrel. A traction assembly is arranged outside the runner. The traction assembly includes a notch opened on the side of the runner. A stop block is fixedly connected to the inner surface of the notch. A traction rope is fixedly connected to the outer surface of the stop block. The traction rope is guided and extended through the notch and then fixedly connected to the outer surface of the second fixing sleeve. A clamping portion is arranged on the outer surface of the runner. The runner is movably connected to a pull rod through the clamping portion. The lower end of the pull rod is connected to the first fixing sleeve through a hinge portion.

2. The ankle joint contracture stretching and supporting appliance according to claim 1, wherein The clamping portion includes a positioning hole opened on the outer surface of the runner. A positioning rod is clamped and connected to the inner side of the positioning hole. A bolt is threadedly connected to one end of the positioning rod away from the runner. The outer surface of the positioning rod is rotatably connected to a swing rod. The number of the positioning holes is several groups and is distributed in a circular array.

3. The ankle joint contracture stretching and supporting appliance according to claim 2, characterized in that, The hinge portion includes a movable rod rotatably connected to the lower end of the swing rod. A traction portion is rotatably connected to the middle of the outer surface of the movable rod. The lower end of the traction portion is fixedly connected to the upper outer surface of the first fixing sleeve. The traction rope is made of an elastic material. The elastic band is in an arc shape.

4. The ankle contracture stretching support appliance according to claim 3, wherein, An adjusting assembly is arranged between the mandrel and the connecting seat. The adjusting assembly includes a guide sleeve rotatably connected to the outer surface of the mandrel. The outer surface of the guide sleeve is inclined. A through hole is opened on the inner side of the connecting seat. The mandrel passes through the front and rear sections of the connecting seat through the through hole. The connecting seat is fixedly connected with a retaining ring through the through hole. Part of the outer surface of the guide sleeve is rotatably connected to the inner surface of the through hole.

5. The ankle joint contracture stretching and supporting appliance according to claim 4, characterized in that, An activity sleeve is in screw drive connection with the inner surface of the retaining ring. A friction block is slidably connected to the inner surface of the through hole. The friction block is rotatably connected to the activity sleeve. The outer surface of the friction block on the side away from the through hole is in sliding contact with the outer surface of the guide sleeve. A pressing crack is penetrated and opened on the surface of the guide sleeve. The number of the pressing cracks is several groups and is distributed in a circular array. The guide sleeve is in a circular ring shape.

6. The ankle joint contracture stretching and supporting appliance according to claim 5, characterized in that, A limiting assembly is arranged on the inner side of the connecting seat. The limiting assembly includes a sliding groove penetrated and opened on the inner side of the connecting seat. An activity plate is slidably connected to the inner side of the sliding groove. A tooth groove is opened on the outer surface of the activity plate. A support rod is rotatably connected to the lower side of the activity plate in a penetrating manner. The support rod is in rotational contact with the outer surface of the lower end of the traction rope.

7. The ankle joint contracture stretching and supporting appliance according to claim 6, wherein, An installation groove is embedded and opened on the inner side of the connecting seat. A driving rod is rotatably connected to the inner side of the installation groove. A gear is fixedly connected to the outer surface of the driving rod. The gear is in meshing transmission connection with the tooth groove. The front end of the driving rod penetrates to the outside of the connecting seat and is fixedly connected with a knob. A locking sleeve is threadedly connected to the outer surface of the driving rod on the outside of the connecting seat. The locking sleeve is in contact with the outer surface of the connecting seat.

8. The ankle joint contracture stretching support appliance according to claim 7, characterized in that, An air guiding assembly is arranged on the inner side of the elastic band. The air guiding assembly includes a cavity embedded and opened on the inner side of the elastic band. A folding groove is opened on the upper outer surface of the elastic band. The folding groove and the cavity are staggered. An overflow groove is embedded and opened on the inner side of the elastic band. Both ends of the overflow groove are communicated with the inside of the cavity.

9. The ankle joint contracture stretching and supporting appliance according to claim 8, characterized in that, The overflow groove extends into the first fixed sleeve. An air outlet hole is fixedly connected to the upper end of the inner surface of the first fixed sleeve. A one-way intake pipe is fixedly connected to the outer surface of the upper end of the first fixed sleeve. Both the one-way intake pipe and the air outlet hole are communicated with the inside of the overflow groove. A support bar is fixedly connected to the outer surface of the upper end of the elastic band.

10. The ankle contracture stretching and supporting appliance according to claim 9, characterized in that, A first protective sleeve is fixedly connected to the left end of the first fixed sleeve. A second protective sleeve is fixedly connected to the outer surface of the lower end of the second fixed sleeve. A traction belt is fixedly connected between the first protective sleeve and the second protective sleeve. Both the first protective sleeve and the second protective sleeve are arc-shaped. Both the first fixed sleeve and the second fixed sleeve are made of elastic materials. The number of the pull rods, the rotating wheels and the traction ropes is two groups and they are symmetrically distributed on both sides of the connecting seat.

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