Subtalar joint fixing device
By designing a subtalk joint fixation device including flexible TPU material and elastic fixation belt, the complications of surgical treatment of flexible flat feet are solved, reducing subtalk joint movement and muscle ligament remodeling, and improving the correction effect and Patient experience.
Patent Information
- Application Number
- CN202411446636.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2024-12-31
AI Technical Summary
The existing surgical methods for treating flexible flat feet damage soft tissue, with high postoperative complications, slow recovery, poor experience, and unsatisfactory treatment results.
Design a subtalk joint fixing device, including foot support made of flexible TPU material, which is precisely processed through 3D printing technology, combined with elastic fixing belt and anti-slip rubber foot pads, fixed to the heel, reducing subtalk joint movement, and opening the forefoot Activation space to reduce wear discomfort.
It has achieved the reduction of subtalar joint valgus, reduced posterior cervical muscle tension, promoted muscle ligament remodeling, improved walking force, enhanced correction effect, reduced complication risk, and improved patient experience.
Smart Images
Figure CN119214845A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of medical devices, and in particular to a subtalar joint fixation device. Background Art
[0002] The incidence of flexible flatfoot in children and adults is 5%. Its main pathological feature is excessive eversion of the subtalar joint leading to collapsed arch, which causes foot pain and fatigue after walking. The commonly used treatment method in clinical practice is subtalar joint braking, which is to insert a subtalar joint brake into the tarsal sinus to limit excessive eversion of the subtalar joint, so that the eversion of the hindfoot and collapsed arch of the flatfoot can be corrected. During treatment, an incision is made on the foot after local anesthesia, and a subtalar joint brake of appropriate size is selected for implantation. The skin is sutured after the operation.
[0003] However, surgical treatment will damage the body's soft tissues. At the same time, the incidence of complications such as postoperative incision infection and poor healing is high. Patients recover slowly, have a poor experience, and the treatment effect is not ideal.
[0004] To this end, a subtalar joint fixation device is provided to solve the above problems. Summary of the invention
[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a subtalar joint fixation device to reduce subtalar joint varus, fully open up the forefoot activity space, reduce wearing discomfort, and enable users to self-exercise to reshape muscles and ligaments and exert walking force.
[0006] In order to achieve the above-mentioned invention object, the present disclosure adopts the following technical solutions:
[0007] A subtalar joint fixation device comprises a foot support, wherein the foot support is sleeved on the heel of a wearer;
[0008] The foot support comprises a bottom plate and a first side plate and a second side plate arranged at the top ends of both sides of the bottom plate, the first side plate and the second side plate are bent inwards relative to each other, and the top ends of the first side plate and the second side plate are respectively recessed toward the bottom plate to form grooves;
[0009] The first side panel and the second side panel fit the ankles of the wearer.
[0010] In an exemplary embodiment of the present disclosure, the first side panel fits the inner side of the ankle, and the second side panel fits the outer side of the ankle;
[0011] The height of the first side plate is greater than the height of the second side plate.
[0012] In an exemplary embodiment of the present disclosure, the distance between the first side panel and the second side panel first increases and then decreases in the direction from the heel to the sole.
[0013] In an exemplary embodiment of the present disclosure, the side plate includes a first bending portion, a second bending portion, and a third bending portion sequentially connected along a direction from the heel to the sole, and the groove is located at the top end of the second bending portion;
[0014] The heights of the first bending portion, the second bending portion and the third bending portion first decrease and then increase in the direction from the heel to the sole.
[0015] In an exemplary embodiment of the present disclosure, the top ends of the two first bending portions are bent outwards relative to each other;
[0016] The distance between the two first bent portions first decreases and then increases in a direction away from the bottom plate.
[0017] In an exemplary embodiment of the present disclosure, the thickness of the bottom plate gradually decreases along a direction from the first side plate to the second side plate.
[0018] In an exemplary embodiment of the present disclosure, the material of the foot support is flexible TPU.
[0019] In an exemplary embodiment of the present disclosure, an elastic fixing belt is provided at the top of the foot support, and the elastic fixing belt is used to fix the foot support to the heel of the wearer.
[0020] In an exemplary embodiment of the present disclosure, one end of the elastic fixing band is fixed to the top end of one of the third bending portions, and a Velcro is provided on one side of the elastic fixing band;
[0021] A through slot is provided on the upper portion of the first bending portion, and the other end of the elastic fixing belt passes around the back of the wearer's foot and passes through the through slots on the first bending portion on the opposite side and the same side in turn, so that the other end of the elastic fixing belt is fixed to the first bending portion on the same side through the Velcro.
[0022] In an exemplary embodiment of the present disclosure, a foot pad is provided on the top of the base plate, and the foot pad fits against the sole of the wearer.
[0023] Beneficial effects of the present disclosure:
[0024] The present invention provides a subtalar joint fixation device, wherein the foot support is made of flexible and slightly deformable TPU material accurately processed by 3D printing technology, and the foot support is worn on the heel of the user and fixed to the ankle by an elastic fixing belt, so as to reduce the activity of the subtalar joint, reduce the tension of the posterior cervical muscles, and achieve a correction effect; at the same time, it can provide better adaptability, fully open the forefoot activity space, reduce wearing discomfort, reduce the eversion of the subtalar joint, and achieve the user's self-exercise to reshape the muscles and ligaments and the walking force problem, with high safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.
[0026] Figure 1 This is a schematic structural diagram of a subtalar joint fixation device in one embodiment of the present disclosure;
[0027] Figure 2 This is a schematic diagram of the structure of a foot rest in one embodiment of the present disclosure;
[0028] Figure 3 A top view of a foot rest in one embodiment of the present disclosure;
[0029] Figure 4 A front view of a foot rest in one embodiment of the present disclosure;
[0030] Figure 5 A left side view of a foot rest in one embodiment of the present disclosure;
[0031] Figure 6 This is a right side view of a foot rest in one embodiment of the present disclosure.
[0032] Description of reference numerals:
[0033] 1. Foot support; 101. Bottom plate; 102. First side plate; 103. Second side plate; 104. Groove; 105. First bending portion; 106. Second bending portion; 107. Third bending portion; 2. Elastic fixing belt; 3. Velcro; 4. Through groove; 5. Foot pad. DETAILED DESCRIPTION
[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.
[0035] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.
[0036] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.
[0037] The present disclosure provides a subtalar joint fixation device, see Figure 1 and Figure 2 , including a foot support 1, which is mounted on the heel of the wearer; the foot support 1 includes a base plate 101 and a first side plate 102 and a second side plate 103 arranged at the top ends of both sides of the base plate 101, the first side plate 102 and the second side plate 103 are bent inwardly relative to each other, and the top ends of the first side plate 102 and the second side plate 103 are respectively recessed toward the base plate 101 to form grooves 104; the first side plate 102 and the second side plate 103 fit the ankles of the wearer.
[0038] In the embodiment disclosed herein, the subtalar joint fixation device mainly includes a foot support 1 worn on the heel of the wearer, and the foot support 1 is composed of a base plate 101 and a first side plate 102 and a second side plate 103 arranged at the top ends of both sides of the base plate 101. The first side plate 102 and the second side plate 103 are relatively bent inwardly to fit the ankle area of the wearer. The top ends of the first side plate 102 and the second side plate 103 are both formed with grooves 104 that are recessed toward the base plate 101. The first side plate 102 and the second side plate 103 fit around the ankle through the grooves 104 to fix the ankle area of the wearer, thereby reducing the activity of the subtalar joint, reducing the tension of the posterior cervical muscles, and correcting the subtalar joint.
[0039] Compared with the existing subtalar joint immobilization surgery, the subtalar joint fixation device has a simple structure, can reduce the subtalar joint activity, reduce the tension of the posterior cervical muscles, achieve the correction effect, and provide better adaptability, fully open the forefoot activity space, reduce wearing discomfort, reduce subtalar joint eversion, and achieve self-exercise for users to reshape muscles and ligaments and walking force problems, with high safety.
[0040] In one embodiment of the present disclosure, see Figure 2 and Figure 5 The first side plate 102 fits the inner side of the ankle, and the second side plate 103 fits the outer side of the ankle; the height of the first side plate 102 is greater than the height of the second side plate 103. In this way, the supporting capacity of the first side plate 102 can be improved, and the first side plate 102 can support the inner side of the ankle, thereby limiting excessive eversion of the subtalar joint and keeping the subtalar joint in a neutral position.
[0041] In one embodiment of the present disclosure, see Figure 3 The distance between the first side plate 102 and the second side plate 103 increases first and then decreases along the direction from the heel to the sole. In this way, the foot support 1 can be adapted to the wearer's foot and the wearer's discomfort can be reduced.
[0042] In one embodiment of the present disclosure, see Figure 4 The side plate includes a first bending portion 105, a second bending portion 106 and a third bending portion 107 connected in sequence along the direction from the heel to the sole, and the groove 104 is located at the top of the second bending portion 106; the heights of the first bending portion 105, the second bending portion 106 and the third bending portion 107 decrease first and then increase along the direction from the heel to the sole. In this way, the first side plate 102 and the second side plate 103 can be fitted around the ankle through the groove 104, and the first side plate 102 and the second side plate 103 can be better fitted, and the subtalar joint activity can be reduced, while providing better adaptability.
[0043] Optionally, the lowest point of the groove 104 on the first side panel 102 is located at one end of the first bending portion 105 close to the second bending portion 106, so as to fit the inner side of the wearer's ankle conveniently.
[0044] Optionally, the lowest point of the groove 104 on the second side panel 103 is located in the middle of the second bending portion 106, so as to fit conveniently with the outer side of the wearer's ankle.
[0045] Optionally, the lowest point of the groove 104 on the first side plate 102 and the lowest point of the groove 104 on the second side plate 103 are at different heights.
[0046] In one embodiment of the present disclosure, see Figure 5 The top ends of the two first bending parts 105 are bent outwards relative to each other; the distance between the two first bending parts 105 decreases first and then increases in the direction away from the bottom plate 101. In this way, the first side plate 102 and the second side plate 103 can fit the back of the wearer's heel, thereby reducing the tension of the posterior cervical muscles and improving the correction effect of the foot support 1.
[0047] Optionally, the inward bending angle of the first bending portion 105 on the first side plate 102 is greater than the inward bending angle of the first bending portion 105 on the second side plate 103 .
[0048] In one embodiment of the present disclosure, see Figure 6 The thickness of the bottom plate 101 gradually decreases from the first side plate 102 to the second side plate 103. In this way, the bottom plate 101 can fit the sole of the foot and support the sole of the foot, so that the calcaneocuboid joint and the talonavicular joint are in the correct force line, which is convenient for the wearer to walk and exert force.
[0049] In one embodiment of the present disclosure, the material of the foot support 1 is flexible TPU, so that the foot support 1 can be slightly deformed, providing better adaptability for the wearer and reducing the discomfort of wearing.
[0050] In one embodiment of the present disclosure, the foot rest 1 is manufactured by 3D printing technology, so as to prevent errors from occurring during the production process and affecting the use of the product.
[0051] Optionally, the thickness of the line layer during the 3D printing process is 0.4 mm. In this way, the processing accuracy of the foot support 1 can be improved, and the use of the foot support 1 can be facilitated.
[0052] In one embodiment of the present disclosure, see Figure 1 The top of the foot support 1 is provided with an elastic fixing belt 2, which is used to fix the foot support 1 on the heel of the wearer. In this way, the foot support 1 can be prevented from falling off, making it convenient for the wearer to walk.
[0053] In one embodiment of the present disclosure, see Figure 1 One end of the elastic fixing band 2 is fixed to the top of one of the third bending parts 107, and a Velcro 3 is provided on one side of the elastic fixing band 2; a through slot 4 is provided on the top of the first bending part 105, and the other end of the elastic fixing band 2 is passed around the back of the wearer's foot and sequentially passes through the through slots 4 on the first bending part 105 on the opposite side and the same side, so as to fix the other end of the elastic fixing band 2 on the first bending part 105 on the same side through the Velcro 3. In this way, it can be achieved
[0054] In one example, one end of the elastic fixing band 2 is fixed to the top of the third bending portion 107 on the first side panel 102, and the other end of the elastic fixing band 2 is passed around the instep of the wearer, through the through slot 4 on the first bending portion 105 on the second side panel 103, around the upper part of the wearer's heel, through the through slot 4 on the first bending portion 105 on the first side panel 102, and the other end of the elastic fixing band 2 is fixed to the first bending portion 105 on the first side panel 102 by Velcro 3, so as to fix the foot support 1 on the heel of the wearer.
[0055] Optionally, the Velcro 3 includes a sub-tape and a mother-tape, the mother-tape is arranged at a free end of one side of the elastic fixing band 2 , and the sub-tape is arranged at the other end of the same side of the elastic fixing band 2 .
[0056] In one embodiment of the present disclosure, see Figure 1 A foot pad 5 is provided on the top of the bottom plate 101, and the foot pad 5 fits the sole of the wearer.
[0057] Optionally, the material of the foot pad 5 is non-slip rubber. In this way, it can be achieved to prevent the wearer from slipping while walking and avoid secondary injuries to the wearer.
[0058] In one embodiment of the present disclosure, the production process of the subtalar joint fixation device is briefly described as follows:
[0059] First, infrared foot scanning, pressure matching technology, and medical gold standard X-rays are used to jointly determine the position of the subtalar joint. According to different people's 3D scanning models, foot pressure matching data, weight-bearing X-ray anteroposterior and lateral views, and weight-bearing X-ray calcaneal axial views, after confirming that the bone force line of the foot is consistent with the appearance force line, 3D modeling software is used to perform millimeter-level precise design of the foot support 1. The design limits excessive eversion of the subtalar joint so that the subtalar joint is always in a neutral position. At the same time, it limits the calcaneocuboid joint and talonavicular joint to be in the correct force line, opens the metatarsal joint, and allows the metatarsal joint to be normally close to the ground when the heel force line is correct, reduces the activity of the subtalar joint, reduces the tension of the posterior cervical muscles, and achieves a correction effect; foot support 1 After the modeling is completed, 3D printing technology is used for precise processing to complete the production of the foot support 1 to prevent errors in the production process and affect the use of the product; the foot support 1 is 3D printed with flexible and slightly deformable TPU material, which takes into account the effect while providing better adaptability and reducing wearing discomfort. At the same time, it fully opens the forefoot activity space to achieve self-exercise to reshape muscles and ligaments and walking force problems, and provides safety during the correction process; after the foot support 1 is printed, an elastic fixing belt 2 from the navicular bone to the outside of the Achilles tendon to the inside of the Achilles tendon is installed on the top of the foot support 1 to increase mechanical feedback and reduce the probability of ankle sprains when the subtalar joint is inverted and the lateral muscle strength is missing. The foot support 1 is equipped with a non-slip rubber foot pad 5 to complete the overall production of the product.
[0060] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.
Claims
1. A subtalar joint fixation device, characterized in that: The invention comprises a foot support (1), wherein the foot support (1) is sleeved on the heel of the wearer; The foot support (1) comprises a bottom plate (101) and a first side plate (102) and a second side plate (103) arranged at the top ends of both sides of the bottom plate (101); the first side plate (102) and the second side plate (103) are bent inwards relative to each other; the top ends of the first side plate (102) and the second side plate (103) are respectively recessed toward the bottom plate (101) to form grooves (104); The first side panel (102) and the second side panel (103) fit the ankles of the wearer.
2. The subtalar joint fixation device according to claim 1, characterized in that: The first side plate (102) fits the inner side of the ankle, and the second side plate (103) fits the outer side of the ankle; The height of the first side plate (102) is greater than the height of the second side plate (103).
3. The subtalar joint fixation device according to claim 1, characterized in that: The distance between the first side plate (102) and the second side plate (103) first increases and then decreases in the direction from the heel to the sole.
4. The subtalar joint fixation device according to claim 1, characterized in that: The side plate comprises a first bending portion (105), a second bending portion (106) and a third bending portion (107) which are sequentially connected along the direction from the heel to the sole, and the groove (104) is located at the top of the second bending portion (106); The heights of the first bending portion (105), the second bending portion (106), and the third bending portion (107) first decrease and then increase in the direction from the heel to the sole.
5. The subtalar joint fixation device according to claim 4, characterized in that: The top ends of the two first bending portions (105) are bent outwards relative to each other; The distance between the two first bent portions (105) first decreases and then increases in a direction away from the bottom plate (101).
6. The subtalar joint fixation device according to claim 1, characterized in that: The thickness of the bottom plate (101) gradually decreases along the direction from the first side plate (102) to the second side plate (103).
7. The subtalar joint fixation device according to claim 1, characterized in that: The material of the foot support (1) is flexible TPU.
8. The subtalar joint fixation device according to claim 4, characterized in that: An elastic fixing belt (2) is arranged at the top of the foot support (1), and the elastic fixing belt (2) is used to fix the foot support (1) on the heel of the wearer.
9. The subtalar joint fixation device according to claim 8, characterized in that: One end of the elastic fixing band (2) is fixed to the top end of one of the third bent portions (107), and a Velcro (3) is provided on one side surface of the elastic fixing band (2); A through slot (4) is provided on the upper portion of the first bending portion (105); the other end of the elastic fixing belt (2) passes around the back of the wearer's foot and passes through the through slots (4) on the first bending portion (105) on the opposite side and the same side in sequence, so that the other end of the elastic fixing belt (2) is fixed to the first bending portion (105) on the same side through the Velcro (3).
10. The subtalar joint fixation device according to claim 1, characterized in that: A foot pad (5) is provided at the top of the base plate (101), and the foot pad (5) fits the sole of the wearer.