Posterior cruciate ligament fracture reconstruction postoperative rehabilitation brace

Abstract

The utility model discloses a postoperative rehabilitation brace for fracture reconstruction of posterior cruciate ligament, which solves the problem that the existing brace lacks specific key function requirements for fracture reconstruction of PCL (Posterior Cruciate Ligament). The rehabilitation brace comprises a brace skeleton, a thigh fixing band and a shank fixing band, the brace skeleton comprises brace skeletons I symmetrically arranged on the two sides of the thigh fixing band and brace skeletons II symmetrically arranged on the two sides of the shank fixing band, and the brace skeleton I and the brace skeleton II on the same side are hinged; a pressure assembly is detachably connected between the two brace frameworks II through fixing assemblies, and the fixing assemblies are symmetrically arranged on the two brace frameworks II. The pressure assembly is arranged between the two brace frameworks II, horizontal advancing force is provided for the back tibia of the shank of the human body, and the situation that the shank sinks, and consequently reconstructed ligaments are damaged or even broken is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to knee joint mechanics correction auxiliary brace technical field, especially point to a kind of rehabilitation brace. BACKGROUND

[0002] The stability of knee joint is mainly guaranteed by four key ligaments: medial collateral ligament (MCL), lateral collateral ligament (LCL), anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL). PCL connects tibia and femur, and its main function is to prevent the posterior displacement of tibia. After PCL reconstruction, the patient will sink after lifting the lower leg due to the effect of gravity during the rehabilitation process, and the severe one will lead to the rupture of reconstructed ligament. To solve this problem, this rehabilitation brace is designed for patients after PCL reconstruction.

[0003] Most of the existing knee joint braces are suitable for postoperative fixation and rehabilitation of knee joint, and play a supporting, stabilizing and limiting role on knee joint. It limits the medial and lateral movement of knee joint, and retains the flexion function of knee joint. However, the known brace lacks the specific key function requirement of PCL reconstruction. SUMMARY

[0004] In view of the deficiencies in the above background art, the utility model provides a posterior cruciate ligament rupture reconstruction postoperative rehabilitation brace, which solves the problem that the existing knee joint brace cannot apply variable pressure to tibia during PCL reconstruction.

[0005] The technical scheme of the utility model is as follows:

[0006] A posterior cruciate ligament rupture reconstruction postoperative rehabilitation brace, comprising a brace framework, a thigh fixing belt and a lower leg fixing belt, characterized in that: the brace framework comprises brace frameworks I symmetrically arranged on both sides of the thigh fixing belt and brace frameworks II symmetrically arranged on both sides of the lower leg fixing belt, and the brace frameworks I and the brace frameworks II on the same side are hinged; a pressure assembly is detachably connected between the two brace frameworks II through a fixing assembly, and the fixing assembly is symmetrically arranged on the two brace frameworks II. The pressure assembly is detachably arranged on the brace framework II through the fixing assembly, a detachable structure is realized on the key part, the brace can be applied to the postoperative rehabilitation exercise of mechanical recombination after the injury of medial and lateral collateral ligaments, anterior cruciate ligament and other postoperative rehabilitation exercises, and the applicability of the brace is improved.

[0007] Further, the pressure assembly comprises a lower leg support and a cable, the inner side of the lower leg support is an arc surface structure matched with the lower leg part, the outer side is provided with a tensioning element and a gasket, the cable is connected to the tensioning element and its length is adjusted through the tensioning element, and the cable is connected to the corresponding fixing assembly through the gasket. The cable is fixed on the lower leg support through the gasket, the lower leg support generates stable horizontal forward force on the lower leg part of human body, and the stability is improved.

[0008] Further, the pad comprises a first pad, a second pad and a third pad, circular channels are arranged in the first pad, the second pad and the third pad, the first pad is symmetrically arranged on both sides of the tensioning element, the circular channel of the first pad corresponds to the inlet and outlet of the tensioning element, the second pad is symmetrically arranged on both sides of the first pad, the circular channel of the second pad corresponds to the circular channel of the first pad, and the third pad is horizontally arranged below the tensioning element; the cable is arranged in the circular channel of the third pad, the two ends of the cable pass through the corresponding fixing assembly, and then pass through the second pad, the first pad and the tensioning element in sequence and are connected with the tensioning element. The cable is connected with the tensioning element through the circular channel in the pad, so that the cable is dynamically fixed on the calf support, the cable running is not affected, and the cable is prevented from shaking in the air.

[0009] Further, the tensioning element is a BOA knob, and the cable is fixed in the BOA knob and adjusts the length of the cable by rotating the BOA knob. The BOA knob is adopted as the tensioning element, so that the structure is simple, and operation is convenient.

[0010] Further, the fixing assembly comprises a fixing seat and an I-shaped mounting block, one side of the fixing seat is provided with a T-shaped groove penetrating through the top surface, the upper half of the I-shaped mounting block is matched with the T-shaped groove, and a circular through groove for the cable is arranged in the crossbeam of the lower half of the I-shaped mounting block.

[0011] Further, a dismounting groove is formed in the bottom of the crossbeam of the lower half of the I-shaped mounting block, the groove depth H of the dismounting groove is 2-5 mm, and the height of the lower half of the I-shaped mounting block is 3 mm lower than that of the upper half, so that the I-shaped mounting block is convenient to dismount.

[0012] Further, the support framework I and the support framework II on the same side are connected through adjusting clamps, the two adjusting clamps correspond to the inner side and the outer side of the knee joint respectively, and the adjusting clamps can limit the movement of the knee joint to the inner side and the outer side.

[0013] Further, the adjusting clamps are digital adjusting clamps, the fixing disc part of the digital adjusting clamps is fixedly connected with the support framework I, and the rotating disc part of the digital adjusting clamps is fixedly connected with the support framework II, so that the digital adjusting clamps can enhance the local stability and enable the knee joint to move within the protection range of the support.

[0014] Further, the inner sides of the adjusting clamps, the thigh fixing belt and the calf fixing belt are provided with circular sponge pads through magic tapes, the circular sponge pads are attached to human skin, and skin abrasion is reduced.

[0015] Further, the thigh fixing belt and the calf fixing belt are nylon tower buckle belts, and wearing is facilitated.

[0016] The utility model discloses the following beneficial effects:

[0017] The utility model discloses a pressure assembly is arranged between two support skeletons II, provides horizontal advancing force to the tibia of the back of human calf, reduces tibia rear shift after PCL injury, prevents the sinking of calf and leads to reconstruction ligament injury even break. By adopting BOA knob as the tensioning element, the pressure assembly can provide appropriate horizontal advancing force according to different patients, and the structure is simple, convenient to use. By setting up fixed component, the pressure assembly is detachably connected on support skeleton II, thereby realizing the detachable structure of the key position, so that the support can be applied to the mechanical reconstruction and postoperative rehabilitation exercise after knee joint medial collateral ligament, anterior cruciate ligament injury and the prevention and treatment of knee osteoarthritis.

[0018] The utility model discloses a adjusting chuck plays the support, stability and spacing effect to knee joint. Adjusting chuck can limit the knee joint to the inside and outside activity, and can adjust the activity degree of knee joint according to the progress of rehabilitation plan, can strengthen the stability of local simultaneously, also make the knee joint activity in the protection range of support. By setting up the contact surface of calf support and calf as cambered surface structure, the calf support better fits the calf of patient. By setting up nylon tower buckle belt for thigh fixing belt and calf fixing belt, the patient uses conveniently and wears. DRAWINGS

[0019] In order to more clearly illustrate the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0020] Figure 1 It is the side view of the utility model;

[0021] Figure 2 It is the structure schematic view of pressure assembly of the utility model;

[0022] Figure 3 It is the structure schematic view of fixed plate of the utility model;

[0023] Figure 4 It is the structure schematic view of clamping piece of the utility model;

[0024] Figure 5 It is the structure schematic view of the inner knob cover of BOA knob of the utility model;

[0025] Figure 6 It is the side view of calf support of the utility model;

[0026] 1, support skeleton; 2, thigh fixing belt; 3, calf fixing belt; 4, support skeleton I; 5, support skeleton II; 6, fixing assembly; 7, pressure assembly; 8, calf support; 9, cable; 10, tensioning element; 11, pad; 12, first pad; 13, second pad; 14, third pad; 15, fixing seat; 16, I-shaped mounting block; 17, T-shaped groove; 18, circular through groove; 19, dismounting groove; 20, adjusting chuck; 21, knob cover; 22, A port; 23, B port; 24, C port; 25, cambered surface structure. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the embodiment, as shown in the drawings, Figure 1 A post-reconstruction brace for posterior cruciate ligament rupture rehabilitation, comprising a support skeleton 1, a thigh fixing belt 2 and a calf fixing belt 3. The thigh fixing belt 2 is used for fixing the thigh of a human body, the calf fixing belt 3 is used for fixing the calf of a human body, and the support skeleton 1 supports the thigh fixing belt 2 and the calf fixing belt 3. Preferably, the support skeleton is made of light aluminum alloy material. The support skeleton 1 comprises support skeletons I 4 symmetrically arranged on both sides of the thigh fixing belt 2 and support skeletons II 5 symmetrically arranged on both sides of the calf fixing belt 3. The support skeleton I 4 and the support skeleton II 5 on the same side are hinged, so that the brace is stably fixed on the leg of the human body for support, while not hindering the normal activity of the leg of the human body. The pressure assembly 7 is detachably connected between the two support skeletons II 5 through the fixing assembly 6. The fixing assembly 6 is symmetrically arranged on the two support skeletons II 5. The pressure assembly 7 acts on the tibia at the back of the calf of the human body, so as to reduce the backward movement of the tibia after posterior cruciate ligament injury, prevent the sinking of the calf, and prevent the injury or even rupture of the reconstructed ligament. The pressure assembly 7 is detachably arranged on the support skeleton II through the fixing assembly 6, so as to realize the detachable structure of the key part, so that the brace can be applied to the mechanical reorganization of the medial and lateral collateral ligaments of the knee joint, the anterior cruciate ligament injury and other postoperative rehabilitation exercises, and the applicability of the brace is improved.

[0029] On the basis of the above-mentioned embodiments, as a preferred embodiment, Figure 2As shown, the pressure assembly 7 comprises a calf support 8 and a cable 9. The inner side of the calf support 8 is provided with an arc structure 25 matched with the back of the calf, and the outer side is provided with a tensioning element 10 and a pad 11. The arc structure 25 is concave and matched with the calf to reduce skin abrasion. The cable 9 is connected to the tensioning element 10 and its length is adjusted by the tensioning element 10. The cable 9 passes through the pad 11 and is connected to the corresponding fixing assembly 6. The length of the cable 9 is adjusted by the tensioning element 10, thereby controlling the horizontal pressure of the calf support on the calf of the human body. The cable 9 is fixed on the calf support 8 by the pad 11, so that the calf support 8 generates stable horizontal forward force on the calf of the human body. Preferably, the arc structure 25 of the calf support 8 is provided with a circular sponge pad by a magic tape.

[0030] On the basis of the above-mentioned embodiments, as a preferred embodiment, the pad 11 comprises a first pad 12, a second pad 13 and a third pad 14. The first pad 12, the second pad 13 and the third pad 14 are all provided with a circular channel. The first pad 12 is symmetrically arranged on both sides of the tensioning element 10. The circular channel of the first pad 12 corresponds to the inlet and outlet of the tensioning element 10. The second pad 13 is symmetrically arranged on both sides of the first pad 12. The circular channel of the second pad 13 corresponds to the circular channel of the first pad 12. The third pad 14 is horizontally arranged below the tensioning element 10. The cable 9 is arranged in the circular channel of the third pad 14. The two ends of the cable 9 pass through the corresponding fixing assembly 6, and then pass through the second pad 13, the first pad 12 and the tensioning element 10 in sequence. The cable 9 is connected to the tensioning element 10 through the circular channel in the pad, so that the cable 9 is dynamically fixed on the calf support 8, without affecting the cable 9, and also preventing the cable 9 from shaking in the air. Preferably, the outer surface of the cable 9 is provided with a flexible fabric, which is matched with the human skin to reduce the damage to the skin.

[0031] On the basis of the above-mentioned embodiments, as a preferred embodiment, the tensioning element 10 is a BOA knob. The cable 9 is fixed in the BOA knob and adjusts the length of the cable 9 by rotating the BOA knob. As shown in FIG. 4, the BOA knob is provided with a circular channel, and the cable 9 is arranged in the circular channel. The two ends of the cable 9 pass through the corresponding fixing assembly 6, and then pass through the second pad 13, the first pad 12 and the tensioning element 10 in sequence. The cable 9 is connected to the tensioning element 10 through the circular channel in the pad, so that the cable 9 is dynamically fixed on the calf support 8, without affecting the cable 9, and also preventing the cable 9 from shaking in the air. Preferably, the outer surface of the cable 9 is provided with a flexible fabric, which is matched with the human skin to reduce the damage to the skin. Figure 5As shown, one end of the cable 9 enters the B port 23 from the A port 22 of the knob cover 21 of the BOA knob and extends out, and reenters the A port 22 from the outside of the knob cover 21 and extends out from the C port 23, ensuring that the cable 9 can be fixed on the knob cover 21. Specifically, the main components of the BOA knob include a base, a rotating wheel, and the knob cover 21. The method of use is "press, twist, pull, and release", when pressed, twist the knob cover 21 to tighten; when it needs to be loosened, pull out the knob cover 21 and pull the cable 9 to release. That is, by using the cooperation of the ratchet and the one-way gear. "Press" is to press the knob cover 21 to make the internal ratchet and gear cooperate; "twist" is to twist the knob cover 21 to make it drive the internal rotating wheel to tighten the cable 9; "pull out" is also to pull out the knob cover 21 to make it disengage with the internal gear ratchet; "pull" is that after the internal ratchet gear is disengaged, the rotating wheel is in a state of no restraint, the rotating wheel rotates in the opposite direction, and the cable 9 is in a state of loosening.

[0032] Example 2, further optimization based on example 1, as shown in Figure 3 、 4 As shown, the fixing assembly 6 includes a fixing base 15 and an I-shaped mounting block 16, one side of the fixing base 15 is provided with a T-shaped groove 17 penetrating the top surface, the upper half of the I-shaped mounting block 16 is matched with the T-shaped groove 17, and the horizontal beam of the lower half is internally provided with a circular through groove 18 for the cable 9 to pass through, thereby ensuring the stability of the connection of the pressure assembly 7.

[0033] Based on the above embodiment, as a preferred embodiment, a dismounting groove 19 is arranged at the bottom of the horizontal beam of the lower half of the I-shaped mounting block 16 for facilitating dismounting, the dismounting groove 19 corresponds to a groove depth H = 2 ~ 5 mm; preferably 3 mm, that is, the height of the lower half of the I-shaped mounting block 16 is 3 mm lower than the height of the upper half, thereby facilitating dismounting.

[0034] Example 3, further optimization based on example 1, as shown in Figure 1 As shown, the same side between the brace framework I 4 and the brace framework II 5 is connected through an adjusting chuck 20, and the two adjusting chucks 20 correspond to the inner and outer sides of the knee joint respectively. The adjusting chuck 20 is a digital adjusting chuck, the fixing disc part of the digital adjusting chuck is fixedly connected with the brace framework I 4, and the rotating disc part of the digital adjusting chuck is fixedly connected with the brace framework II 5. The digital adjusting chuck can adjust the activity number of the knee joint according to the progress of the rehabilitation plan, so that the brace can play the roles of stabilization and fixation, support and protection, prevention of deformity, and load bearing after being worn.

[0035] Specifically, when the digital adjusting disc is at 0 degree, the brace skeleton 1 is in a fully straightened state, and the digital adjusting disc can control the brace to be stretched to 0-90 degrees and bent to 0-120 degrees, meeting the requirements of the dynamic and static force structure of the knee joint. The brace can provide an effective range of motion for normal joints and muscles, while strengthening the stability of the local area and allowing the knee joint to move within the protection range of the brace.

[0036] On the basis of the above-mentioned embodiments, as a preferred embodiment, the inner sides of the adjusting disc 20, the thigh fixing belt 2 and the calf fixing belt 3 are all provided with circular sponge pads through magic tapes.

[0037] On the basis of the above-mentioned embodiments, as a preferred embodiment, the thigh fixing belt 2 and the calf fixing belt 3 are both nylon tower buckle belts, which are in close contact with the human skin and convenient for the patient to wear.

[0038] The use method of the utility model:

[0039] In use, the thigh fixing belt 2 is bound on the thigh, and the calf fixing belt 3 is bound on the calf. The adjusting disc 20 can be adjusted to a suitable position according to the rehabilitation degree of the patient. The pressure assembly 7 is installed between the two brace skeletons II 5 through the cooperation of the I-shaped mounting block 16 and the fixing seat 15, the position of the calf support 8 is adjusted so as to be opposite to the middle of the human calf, the tensioning element 10 is pressed and twisted to be tightened, and when a comfortable force is felt by the patient, the tightening is stopped; when relaxation is needed, the tensioning element 10 is pulled out, and the cable 9 is pulled to realize relaxation.

[0040] The above-mentioned is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A post-rehabilitation brace for posterior cruciate ligament rupture reconstruction, comprising a brace framework (1), a thigh fixing belt (2) and a calf fixing belt (3), characterized in that: The brace framework (1) comprises brace frameworks I (4) symmetrically arranged on both sides of the thigh fixing belt (2) and brace frameworks II (5) symmetrically arranged on both sides of the calf fixing belt (3), and the brace framework I (4) and the brace framework II (5) on the same side are hinged; the two brace frameworks II (5) are detachably connected with the pressure assembly (7) through the fixing assembly (6) symmetrically arranged on the two brace frameworks II (5).

2. The posterior cruciate ligament rupture reconstruction post-rehabilitation brace of claim 1, wherein: The pressure assembly (7) comprises a calf support (8) and a cable (9), the inner side of the calf support (8) is an arc surface structure (25) matched with the calf, the outer side is provided with a tensioning element (10) and a gasket (11), the cable (9) is connected to the tensioning element (10) and the length of the cable (9) is adjusted through the tensioning element (10), and the cable (9) passes through the gasket (11) and is connected to the corresponding fixing assembly (6).

3. The posterior cruciate ligament rupture reconstruction post-rehabilitation brace of claim 2, wherein: The gasket (11) comprises a first gasket (12), a second gasket (13) and a third gasket (14), the first gasket (12), the second gasket (13) and the third gasket (14) are all provided with circular channels, the first gasket (12) is symmetrically arranged on both sides of the tensioning element (10), the circular channel of the first gasket (12) corresponds to the inlet and outlet of the tensioning element (10), the second gasket (13) is symmetrically arranged on both sides of the first gasket (12), the circular channel of the second gasket (13) corresponds to the circular channel of the first gasket (12), and the third gasket (14) is arranged below the tensioning element.

4. The posterior cruciate ligament rupture reconstruction post-rehabilitation brace of claim 3, wherein: The cable (9) is arranged in the circular channel of the third gasket (14), the two ends of the cable (9) pass through the corresponding fixing assembly (6), and then pass through the second gasket (13), the first gasket (12) and the tensioning element (10) in sequence and are connected to the tensioning element (10).

5. The posterior cruciate ligament rupture reconstruction post-rehabilitation brace of claim 4, wherein: The tensioning element (10) is a BOA knob, the cable (9) is fixed in the BOA knob and the length of the cable (9) is adjusted by rotating the BOA knob.

6. The posterior cruciate ligament rupture reconstruction post-rehabilitation brace of claim 5, wherein: The fixing assembly (6) comprises a fixing seat (15) and an I-shaped mounting block (16), one side of the fixing seat (15) is provided with a T-shaped groove (17) penetrating the top surface, the upper half of the I-shaped mounting block (16) is matched with the T-shaped groove (17), and the horizontal beam of the lower half is provided with a circular through groove (18) for the cable (9).

7. The post-operative rehabilitation brace for posterior cruciate ligament rupture reconstruction according to claim 1 or 6, characterized in that: The horizontal beam of the lower half of the I-shaped mounting block (16) is provided with a dismounting groove (19) at the bottom for facilitating dismounting, and the groove depth H of the dismounting groove (19) is 2-5 mm.

8. The posterior cruciate ligament rupture reconstruction post-rehabilitation brace of claim 7, wherein: The brace framework I (4) and the brace framework II (5) on the same side are connected through an adjusting chuck (20), and the two adjusting chucks (20) correspond to the inner and outer sides of the knee joint respectively.

9. The posterior cruciate ligament rupture reconstruction post-rehabilitation brace of claim 8, wherein: The adjusting chuck (20) is a digital adjusting chuck, the fixing disc part of the digital adjusting chuck is fixedly connected with the brace framework I (4), and the rotating disc part of the digital adjusting chuck is fixedly connected with the brace framework II (5).

10. The posterior cruciate ligament rupture reconstruction post-rehabilitation brace of claim 9, wherein: The inner sides of the adjusting chuck (20), the thigh fixing belt (2) and the calf fixing belt (3) are all provided with circular sponge pads through magic tapes. The thigh fixing belt (2) and the calf fixing belt (3) are both nylon tower buckle belts.

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