Preventing ankle stiffness with calcaneal traction arch

Abstract

The present invention belongs to the technical field of calcaneal traction, and discloses a calcaneal traction bow for preventing ankle joint stiffness. The porous basic traction bow structure is U-shaped, and an elastic telescopic rod device is rotatably provided at the bottom edge of the porous basic traction bow, and a forefoot pad is rotatably provided at the other end of the elastic telescopic rod device. The porous basic traction bow is provided with a U-shaped metal frame and a semi-ring, and an elastic telescopic rod embracing section is provided at the middle of the bottom edge of the U-shaped metal frame, and porous adjustment sections are provided at both ends of the U-shaped metal frame; the elastic telescopic rod device is provided with a rotating wheel, a telescopic screw, an elastic telescopic rod and an embracing ring. The forefoot pad is provided with a rectangular plate, and soft pads and grooves are provided on both sides of the rectangular plate, respectively, and a rotating rod is provided in the groove, and the rotating wheel is rotatably fixed in the groove through the rotating rod. The present invention has a simple structure, is easy to operate and use, avoids causing patients to have ankle dorsiflexion restriction, and ensures the normal gait of patients when walking; and can ensure the maximum clinical efficacy of calcaneal traction in the treatment of below-knee fractures.

Description

Technical Field

[0001] The invention belongs to the technical field of calcaneal traction, and in particular relates to a calcaneal traction arch for preventing ankle joint stiffness. Background Art

[0002] At present, calcaneal traction is a commonly used bone traction method in orthopedics, and it is mainly used for tibial plateau fractures, tibia and fibula fractures, ankle fractures, etc. Its operation method is to perform local anesthesia at the appropriate part of the calcaneus, and use the outer 1 / 3 of the line connecting the medial malleolus to the posterior edge of the calcaneus as the calcaneal traction needle insertion site. Use an electric drill to insert a 3.5mm diameter Kirschner wire from the inner side of the calcaneus to the outer side, and the Kirschner wire is parallel to the sole of the foot. After the Kirschner wire is inserted, install the traction bow and hang appropriate weight for traction.

[0003] Clinical observations have found that most patients who undergo calcaneal traction have limited ankle dorsiflexion, and only some of these patients can achieve clinical recovery after later manual release, while the remaining patients still have varying degrees of ankle dorsiflexion stagnation. According to the traction principle, the cause is Achilles tendon contracture. From anatomical knowledge, we know that the Achilles tendon insertion point is located at the calcaneal tuberosity, and the traction trigger point of calcaneal traction is above the calcaneal tuberosity. Therefore, it can be inferred from physical mechanics that the application of traction will inevitably lead to ankle plantar flexion.

[0004] When a below-knee fracture occurs, more doctors first choose to use calcaneal traction to stabilize the fracture, reduce swelling, and protect soft tissue. However, traditional traction bows often leave patients with limited ankle dorsiflexion, which seriously affects the patient's gait when walking in the later stage. Therefore, there is an urgent need for a new type of calcaneal traction bow in clinical practice to ensure the maximum clinical efficacy of calcaneal traction in the treatment of below-knee fractures.

[0005] Through the above analysis, the problems and defects of the existing technology are: the traditional traction bow often causes the patient to have ankle dorsiflexion limitation, which seriously affects the patient's gait when walking in the later stage. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the present invention provides a calcaneal traction arch for preventing ankle joint stiffness.

[0007] The present invention is implemented in this way: a calcaneal traction arch for preventing ankle joint stiffness is provided with:

[0008] porous base traction bow;

[0009] The porous basic traction bow structure is U-shaped, and an elastic telescopic rod device is rotatably provided at the bottom edge of the porous basic traction bow, and a front foot pad is rotatably provided at the other end of the elastic telescopic rod device.

[0010] Furthermore, the porous basic traction bow is provided with a U-shaped metal frame, a half ring is provided on the outer side of the middle part of the bottom edge of the U-shaped metal frame, an elastic telescopic rod embracing section is provided in the middle part of the bottom edge of the U-shaped metal frame, porous adjustment sections are provided at both ends of the U-shaped metal frame, and a plurality of adjustment holes are provided on the porous adjustment section; nuts are provided on both sides of the elastic telescopic rod embracing section.

[0011] Furthermore, the elastic telescopic rod device is provided with a rotating wheel, a telescopic screw is provided on one side of the rotating wheel, an elastic telescopic rod is provided at the other end of the telescopic screw, and an embracing ring is provided at the other end of the elastic telescopic rod.

[0012] Furthermore, the elastic telescopic rod is provided with an outer tube, a spring is fixed inside the outer tube, and a push rod plug is fixed at the bottom end of the spring;

[0013] The telescopic screw rod is provided with an outer rod, and inner screw rods are internally threadedly connected at both ends of the outer rod, and the two inner screw rods are respectively fixedly connected to the rotating wheel and the push rod plug.

[0014] Furthermore, the forefoot pad is provided with a rectangular plate, a soft pad is fixed on one side of the rectangular plate, a groove is provided on the other side of the rectangular plate, a rotating rod is provided in the groove, and the rotating wheel is rotated and fixed in the groove by the rotating rod; the left and right sides of the rectangular plate are integrally provided with connecting frames, and a fiber braided belt is provided on the connecting frame;

[0015] The outer side surface of the soft pad is arc-shaped, and one end of the fiber braided belt is provided with a Velcro.

[0016] Another object of the present invention is to provide a method for controlling the calcaneal traction bow for preventing ankle joint stiffness, the method comprising: drilling a bone traction needle, then installing a U-shaped porous basic traction bow according to the length of the traction frame, and finally adjusting the nut of the telescopic screw to make the patient's ankle joint be in a 0° position or a slightly dorsiflexed position; as the plantar flexion angle gradually increases, the spring in the elastic telescopic rod is progressively compressed, and when the plantar flexion action stops, the spring reacts to restore its initial length, pushing the affected foot to perform passive dorsiflexion activity.

[0017] Combining all the above technical solutions, the advantages and positive effects of the present invention are as follows:

[0018] First, the present invention has a simple structure and is easy to operate and use, thereby avoiding leaving patients with ankle dorsiflexion limitation and ensuring a normal gait when the patient walks; and can ensure the maximum clinical efficacy of calcaneal traction in the treatment of below-knee fractures.

[0019] Second, when the spring in the elastic telescopic rod device is at an initial length, the length of the elastic telescopic device can be changed by adjusting the screw rod, thereby maintaining the dorsiflexion state of the ankle joint after traction, which is further convenient for operation and use.

[0020] Third, the length and width of the rectangular board are both the length and width of the human forefoot, and a soft pad is attached to the inner side. The cross-section of the soft pad is arc-shaped, which basically adapts to the curve of the human forefoot, thereby increasing the comfort of the patient when using it. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a schematic structural diagram of a calcaneal traction arch for preventing ankle joint stiffness provided by an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of a porous basic traction bow provided by an embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of an elastic telescopic rod device provided in an embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of a front foot pad provided by an embodiment of the present invention;

[0026] Figure 5 is a schematic structural diagram of a front foot pad provided by an embodiment of the present invention;

[0027] In the figure: 1. U-shaped metal frame; 2. half ring; 3. elastic telescopic rod embracing section; 4. porous adjustment section; 5. rotating wheel; 6. telescopic screw; 7. elastic telescopic rod; 8. embracing ring; 9. rectangular plate; 10. groove; 11. connecting frame; 12. fiber braided belt; 13. soft cushion; 14. front foot pad; 15. elastic telescopic rod device; 16. porous basic traction bow. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] In view of the problems existing in the prior art, the present invention provides a calcaneal traction arch for preventing ankle joint stiffness. The present invention is described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 5 As shown, the calcaneal traction bow for preventing ankle stiffness provided by the present invention comprises: a U-shaped metal frame 1, a half ring 2, an elastic telescopic rod embracing section 3, a porous adjustment section 4, a rotating wheel 5, a telescopic screw 6, an elastic telescopic rod 7, an embracing ring 8, a rectangular plate 9, a groove 10, a connecting frame 11, a fiber braided belt 12, a soft pad 13, a forefoot pad 14, an elastic telescopic rod device 15, and a porous basic traction bow 16.

[0031] Example 1

[0032] like Figure 1 As shown, the porous basic traction bow 16 structure of this embodiment is U-shaped, and an elastic telescopic rod device 15 is rotatably provided on the bottom edge of the porous basic traction bow 16, and a front foot pad 14 is rotatably provided on the other end of the elastic telescopic rod device 15.

[0033] Example 2

[0034] like Figure 2 As shown, the U-shaped porous basic traction bow 16 of this embodiment is composed of a U-shaped metal frame 1, a metal half ring 2, an elastic telescopic rod 7 embracing section 3, and a porous adjustment section 4. The distal end of the U-shaped metal frame 1 is expanded into a porous adjustment section 4, which can be individually adjusted according to the length of the patient's limbs in conjunction with the elastic telescopic rod 7 system. The metal half ring 2 is located at the center of the bottom edge of the "U"-shaped metal frame, and the metal frame opposite to the ring is the elastic telescopic rod 7 embracing section 3, which is matched with the elastic telescopic rod 7 system. Nuts are arranged on both sides of the elastic telescopic rod 7 embracing section 3, and the elastic telescopic rod 7 system can be fixed at a specific angle by tightening the nuts on both sides.

[0035] Example 3

[0036] like Figure 3 As shown, the elastic telescopic rod device 15 of the present embodiment is mainly composed of a rotating wheel 5, a telescopic screw 6, an elastic telescopic rod 7, and an embracing ring 8. The rotating wheel 5 is matched and connected with the dorsal side of the forefoot pad 14, and can cooperate with the plantar flexion and dorsiflexion of the patient's ankle joint to complete a moderate clockwise (counterclockwise) rotation. When the spring of the telescopic screw 6 in the elastic telescopic device is at an initial length, the length of the elastic telescopic device can be changed by adjusting its nut, thereby maintaining the dorsiflexion state of the ankle joint after traction. The elastic telescopic rod 7 is a piston device composed of a metal tube, a push rod plug, and a spring. It can be compressed to the shortest when the patient does active plantar flexion, and when the patient rests, the ankle joint can be placed in a passive dorsiflexion position. The embracing ring 8 can match the embracing area of ​​the elastic telescopic rod 7 of the U-shaped metal frame 1, and can be adapted to complete the ring rotation when the patient's ankle joint is active and passive.

[0037] Example 4

[0038] like Figure 4 and Figure 5As shown, the forefoot pad 14 of this embodiment is composed of a rectangular light hard plate and a soft pad 13. The main body is a rectangular plate 9, and the length and width of the plate are both the length and width of the human forefoot. The inner side of the rectangular plate 9 is attached with a soft pad 13, and the cross-section of the soft pad 13 is arc-shaped, which is basically adapted to the curve of the human forefoot. The center position of the hard plate is a groove 10 of the elastic telescopic device, which forms a pestle-axis joint through the rotating rod and the rotating wheel 5, and can complete the rotation according to the active and passive ankle joints of the patient. There is a connecting frame 11 inside and outside the rectangular plate 9, which can be passed through a fiber braided belt 12 to tighten and fix the forefoot pad 14 to the forefoot.

[0039] The working principle of the present invention is as follows: when the present invention performs traction on the affected limb, the bone traction pin must first be correctly drilled, and then the U-shaped porous basic traction bow 16 must be installed according to the length of the traction frame, and finally the patient's ankle joint is placed at a 0° position or a slightly dorsiflexed position by adjusting the nut of the telescopic screw 6. At this time, the patient can be asked to actively plantar flex the ankle joint, and as the plantar flexion angle gradually increases, the spring located in the elastic telescopic rod 7 is progressively compressed, and when the patient stops the plantar flexion action, the spring reacts to restore its initial length, thereby pushing the affected foot to perform passive dorsiflexion activities.

[0040] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A calcaneal traction arch for preventing ankle joint stiffness, characterized in that: The calcaneal traction arch for preventing ankle joint stiffness is provided with: porous base traction bow; The porous basic traction bow structure is U-shaped, and an elastic telescopic rod device is rotatably provided at the bottom edge of the porous basic traction bow, and a front foot pad is rotatably provided at the other end of the elastic telescopic rod device; The porous basic traction bow is provided with a U-shaped metal frame, a half ring is provided on the outer side of the middle of the bottom edge of the U-shaped metal frame, an elastic telescopic rod embracing section is provided in the middle of the bottom edge of the U-shaped metal frame, and porous adjustment sections are provided at both ends of the U-shaped metal frame, and a plurality of adjustment holes are provided on the porous adjustment section; nuts are provided on both sides of the elastic telescopic rod embracing section; The elastic telescopic rod device is provided with a rotating wheel, a telescopic screw is provided on one side of the rotating wheel, an elastic telescopic rod is provided at the other end of the telescopic screw, and an embracing ring is provided at the other end of the elastic telescopic rod; The elastic telescopic rod is provided with an outer tube, a spring is fixed inside the outer tube, and a push rod press plug is fixed at the bottom end of the spring; The telescopic screw rod is provided with an outer rod, and inner screw rods are connected to the inner threads of the two ends of the outer rod, and the two inner screw rods are fixedly connected to the rotating wheel and the push rod plug respectively.

2. The calcaneal traction arch for preventing ankle stiffness according to claim 1, characterized in that: The front foot pad is provided with a rectangular plate, a soft pad is fixed on one side of the rectangular plate, a groove is provided on the other side of the rectangular plate, a rotating rod is provided in the groove, and the rotating wheel is rotated and fixed in the groove by the rotating rod; the left and right sides of the rectangular plate are integrally provided with connecting frames, and the connecting frames are provided with fiber braided belts; The outer side surface of the soft pad is arc-shaped, and one end of the fiber braided belt is provided with a Velcro.

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