CN210355008U - 3D prints sufficient orthopedic ware of ankle - Google Patents
3D prints sufficient orthopedic ware of ankle Download PDFInfo
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- CN210355008U CN210355008U CN201920474461.0U CN201920474461U CN210355008U CN 210355008 U CN210355008 U CN 210355008U CN 201920474461 U CN201920474461 U CN 201920474461U CN 210355008 U CN210355008 U CN 210355008U
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Abstract
The application provides a 3D prints sufficient orthopedic ware of ankle. The method comprises the following steps: the ankle-foot orthosis comprises an ankle-foot orthosis body, an electrical stimulation device and a thin film pressure sensor; the ankle-foot orthosis body consists of a shank supporting part, an ankle-foot fixing part and a foot support; a reserved position is arranged at the upper end of the inner side of the shank supporting part, corresponding to the common peroneal nerve of the human body, so as to place the electrical stimulation device; the thin film pressure sensor is arranged in the heel of the foot support; the thin film pressure sensor is provided with a data line for connecting with the electrical stimulation device. The method can prevent and correct deformity, improve abnormal gait of lower limbs, improve walking efficiency, accelerate local blood circulation, prevent ischemic atrophy of muscles and greatly reduce the risk of inducing deep venous thrombosis.
Description
Technical Field
The application relates to the technical field of orthopedic appliances, in particular to a 3D printing ankle-foot orthosis.
Background
The stroke is one of the diseases with high morbidity and high mortality in the world at present, 200 million patients are newly added every year, the patients can have hemiplegia with different degrees after the stroke, about three quarters of the patients with hemiplegia need assistance in life, the concurrent foot drop and inversion after the stroke are one of the problems in the rehabilitation process of the patients with stroke and hemiplegia, the walking ability and the walking efficiency of the patients are seriously influenced, the quality of daily life is reduced, the patients are easy to cause ischemic atrophy and cause disability if the patients are not treated in time, the ankle foot orthosis is worn and is one of the main means for treating the foot drop and the foot inversion, the ankle foot orthosis has a structure from a lower leg to a sole and mainly comprises a lower leg supporting part, an ankle foot fixing part and a foot support, the gravity center of the body of the patients walking is enabled to move to the patients by fixing the feet at a neutral position without influencing the movement of hip and knee joints, so that the walking state is improved, the walking efficiency is improved.
The ankle-foot orthosis can prevent and correct deformity in the treatment of hemiplegia after stroke, and plays an important role in improving abnormal gait of patients and improving walking efficiency, but the traditional ankle-foot orthosis on the market at present has complex, heavy and unattractive manufacturing process, and can not be matched with the actual situation of the feet of the patients, so that the compliance of the patients after wearing is low, the treatment effect is greatly reduced, and the ankle-foot orthosis is worn for a long time, so that ischemic muscular atrophy of the feet is caused due to long-term braking of the feet and poor blood circulation around the feet, and even the risk of inducing deep venous thrombosis of the feet is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, the technical problem to be solved by the present application is to provide a 3D printed ankle-foot orthosis for solving the problems of the prior art.
To achieve the above and other related objects, the present application provides a 3D printed ankle-foot orthosis comprising: the ankle-foot orthosis comprises an ankle-foot orthosis body, an electrical stimulation device and a thin film pressure sensor; the ankle-foot orthosis body consists of a shank supporting part, an ankle-foot fixing part and a foot support; a reserved position is arranged at the upper end of the inner side of the shank supporting part, corresponding to the common peroneal nerve of the human body, so as to place the electrical stimulation device; the thin film pressure sensor is arranged in the heel of the foot support; the thin film pressure sensor is provided with a data line for connecting with the electrical stimulation device.
In an embodiment of the present application, the thin film pressure sensor forms a pressure value signal in real time through the stress at the heel of the foot rest and sends the pressure value signal to the electrical stimulation device; the electrical stimulation device is preset with a discharge threshold, and when the pressure value signal is smaller than the discharge threshold, discharge is carried out.
In an embodiment of the present application, the electrical stimulation apparatus includes: an electrical stimulator, one or more stimulation electrodes, and a fibula tip-to-tip site.
In an embodiment of the present application, the ankle-foot orthosis body is respectively provided with one or more pairs of binding portions; the binding part is fixed in a buckling or sticking mode through an elastic band.
In an embodiment of the application, the ankle-foot orthosis body obtains corresponding three-dimensional data by scanning the foot part with the front end of the Rodin4D, selects a nylon material, and is integrally formed and printed by adopting an SLS selective laser sintering technology.
In an embodiment of the present application, the lower leg support portion has one or more hollow holes.
In an embodiment of the present application, a neutral position of 90 degrees is adopted between the lower leg supporting part and the foot support of the ankle-foot orthosis body.
In an embodiment of the present application, the top and edges of the body of the ankle-foot orthosis are polished to reduce friction and prevent secondary damage during wearing.
In an embodiment of the present application, a gap with a certain distance is reserved at an ankle joint corresponding to the ankle-foot fixing part; and/or soft cotton fabric is lined at the ankle joint corresponding to the ankle-foot fixing part
As described above, the present application provides a 3D printed ankle-foot orthosis. The method comprises the following steps: the ankle-foot orthosis comprises an ankle-foot orthosis body, an electrical stimulation device and a thin film pressure sensor; the ankle-foot orthosis body consists of a shank supporting part, an ankle-foot fixing part and a foot support; a reserved position is arranged at the upper end of the inner side of the shank supporting part, corresponding to the common peroneal nerve of the human body, so as to place the electrical stimulation device; the thin film pressure sensor is arranged in the heel of the foot support; the thin film pressure sensor is provided with a data line for connecting with the electrical stimulation device.
The following beneficial effects are achieved:
the method can prevent and correct deformity, improve abnormal gait of lower limbs, improve walking efficiency, accelerate local blood circulation, prevent ischemic atrophy of muscles and greatly reduce the risk of inducing deep venous thrombosis.
Drawings
Fig. 1 is a schematic structural view of an ankle-foot orthosis body according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an electrical stimulation device and a thin film pressure sensor according to an embodiment of the present disclosure.
Detailed Description
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application and are not drawn according to the number, shape and size of the components in actual implementation, and the type, number and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
As shown in fig. 1, a schematic structural diagram of a 3D printed ankle-foot orthosis in an embodiment of the present application is shown. As shown, it includes: the ankle-foot orthosis comprises an ankle-foot orthosis body 1, an electrical stimulation device 2 and a thin film pressure sensor 3;
the ankle-foot orthosis body 1 is composed of a lower leg supporting part 11, an ankle-foot fixing part 12 and a foot support 13.
Lower leg support part 11
In an embodiment of the present application, a reserved position is provided at the upper end of the inner side of the lower leg supporting portion 11 corresponding to the common peroneal nerve of the human body, so as to place the electrical stimulation device 2.
In this embodiment, on the premise that the structural performance of the ankle-foot orthosis body 1 is not affected, the lower leg support 11 is designed with a reserved placement (e.g., a groove) at the upper end of the inner side of the lower leg support 11 for placing the electrostimulation device 2, and the electrostimulation device 2 corresponds to the common peroneal nerve of the human body.
Fig. 2 is a schematic structural view of an electrical stimulation device and a thin film pressure sensor according to an embodiment. As shown, the electrostimulation device 2 comprises: an electrical stimulator 21, one or more stimulation electrodes 22, and a fibula tip-to-site 23.
In this embodiment, the common peroneal nerve of the human body can be accurately located and found through the fibula tip alignment point 23, and the reserved position in the calf support portion 11 is fixed by gel and tightly attached to the skin, so that clamping pressure cannot be caused during linkage treatment, and any discomfort can be caused to the patient.
Specifically, when the finite element analysis structure is optimally designed, under the condition that the structural function of the ankle-foot orthosis body 1 printed in 3D is ensured, the sufficient space is reserved at the upper end of the inner side of the lower leg support part 11, and the fibula tip-to-site 23 is arranged on the electrostimulator device 2, so that the position of the common peroneal nerve can be accurately located and found by two stimulation electrodes 22 in the figure.
The electrical stimulator 21 is a low frequency stimulation that does not cause severe discomfort.
In one embodiment of the present application, the lower leg support portion 11 has one or more through holes 111.
In this embodiment, through structural optimization of finite element analysis, on the premise of not changing the structural performance of the lower leg support portion 11, one or more hollow holes 111 are provided, for example, 1-6 hollow holes 111 with a diameter of 1-8cm are provided, which not only shortens the printing time of the ankle-foot orthosis body 1, reduces the printing cost, greatly reduces the weight of the ankle-foot orthosis body 1, but also has the advantages of ventilation, beauty and the like.
Ankle foot fixing part 12
In an embodiment of the present application, a gap is reserved at a certain distance from the ankle joint 121 corresponding to the ankle-foot fixing part 12; and/or the ankle joint part 121 corresponding to the ankle foot fixing part 12 is lined with soft cotton fabric.
For example, the ankle joint 121 of the ankle-foot fixing part 12 is appropriately enlarged by a gap of 5mm in the left and right sides thereof, and/or a soft cotton fabric is added to ensure that the ankle-foot fixing part 12 fits the ankle foot while reducing friction and improving wearing comfort.
In one embodiment of the present application, the thin film pressure sensor 3 is built in the heel of the foot rest 13.
As shown in fig. 2, the membrane pressure sensor 3 is provided with a data line 31 for connection to the electrostimulation device 2.
In an embodiment of the present application, the thin film pressure sensor 3 forms a pressure value signal in real time by the stress at the heel of the foot rest 13 and sends the pressure value signal to the electrical stimulation device 2; the electrical stimulation device 2 is preset with a discharge threshold, and when the pressure value signal is smaller than the discharge threshold, the discharge is performed.
In this embodiment, it can be understood that the ankle-foot orthosis body 1 and the electrical stimulation device 2 are combined for treatment and are performed synchronously, the patient wears the ankle-foot orthosis body 1 to lift the legs, the heel and the ground, the thin film pressure sensor 3 senses the foot pressure, sends a signal to the electrical stimulation device 2, and judges according to the discharge threshold, if the conditions are met, the electrical stimulator 21 of the electrical stimulation device 2 discharges to cause muscle contraction of the patient, so as to accelerate local blood circulation, thereby achieving the purposes of preventing and correcting deformity (foot drop and foot inversion), improving abnormal gait of lower limbs, improving walking efficiency, preventing ischemic atrophy of muscles, and greatly reducing the risk of inducing deep vein thrombosis.
In this embodiment, according to the rule of human walking heel pressure, the change of heel pressure is accurately sensed, pressure value signals are transmitted to the electrical stimulation device 2 through the conduction of the data line 31, one or more stimulation electrodes 22 discharge to stimulate muscles to contract passively, and the electrical stimulator 1 is low-frequency electrical stimulation, so that severe discomfort cannot be generated, muscle ischemic atrophy can be effectively prevented, and the risk of inducing deep venous thrombosis is reduced.
In this embodiment, in order to ensure the electrical stimulation effect of the electrical stimulation device 2, according to the medical treatment experience or the rehabilitation treatment standard, for example, the electrical stimulation effect corresponding to the electrical stimulation device 2 is not more than 8 times of the peak value of the normal blood flow velocity and/or not more than 3.5 times of the peak value of the normal blood flow.
Specifically, the discharge amount can be restricted by the electrical stimulation effect to meet the requirement of the electrical stimulation effect.
In an embodiment of the present application, the thin film pressure sensor 3 is further electrically connected to an energy storage element 32.
In an embodiment of the present application, the ankle-foot orthosis body 1 is provided with one or more pairs of binding portions 14; the binding portion 14 is fixed by an elastic band in a snap or adhesive manner.
In this embodiment, the binding portion 14 is fixed by an elastic band, such as a nylon velcro tape, in a manner of a buckle or a paste, so as to ensure the best therapeutic effect. Adopt this application binding portion 14's fixed mode makes the elasticity easily controllable, low cost, and the change of being convenient for increases patient's comfort, improves the compliance that the patient wore.
Specifically, the lower leg support portion 11 is provided with two pairs of the binding portions 14, and the foot rest 13 is provided with a pair of the binding portions 14.
In an embodiment of the application, the ankle-foot orthosis body 1 obtains corresponding three-dimensional data by scanning the foot part with the front end of the Rodin4D, selects a nylon material, and is integrally formed and printed by adopting an SLS selective laser sintering technology.
In this embodiment, the height and size of the ankle-foot orthosis body 1 printed and molded in the above manner can conform to anatomical features of the foot of the patient, and the ankle-foot orthosis body is comfortable to wear, free of discomfort, high in compliance and capable of effectively preventing and correcting deformity.
In addition, the printing material is made of nylon, so that the printing material has the advantages of good material performance, easiness in forming, integrated forming, high material utilization rate, economical and practical overall price and no environmental pollution.
In an embodiment of the present application, a neutral position of 90 degrees is adopted between the lower leg supporting part 11 and the foot support 13 of the ankle-foot orthosis body 1.
Specifically, the shank support part 11 and the foot rest 13 are designed to be at a neutral position of 90 degrees, so that the center of gravity of the patient is deviated to the affected side, abnormal gait of the lower limbs of the patient is effectively improved, and walking efficiency of the patient is improved. Prevent and correct deformity, and has no influence on the motion of hip joint and knee joint.
In an embodiment of the present application, the top and the edge of the ankle-foot orthosis body 1 are polished to reduce friction and prevent secondary damage during wearing.
In this embodiment, after the ankle-foot orthosis body 1 is printed, the top end and other edge portions of the lower leg support portion 11 are polished to reduce friction with the skin and prevent secondary damage caused by wearing the orthosis.
The application provides 3D prints ankle-foot orthosis and prints through the additive manufacturing technique, has advantages such as light ventilative, accords with anatomical structure, comfortable pleasing to the eye, and its surface accuracy is high, has greatly improved the compliance that the patient wore, and percutaneous nerve electricity stimulates uses the electric pulse to stimulate leg muscle or foot muscle to activate muscle pump or sole vein pump, arouse muscle contraction. After long-term use, the foot ankle-foot orthosis can accelerate local blood circulation of the foot, prevent ischemic atrophy of muscles, greatly reduce the risk of inducing deep venous thrombosis, and make up the negative influence caused by long-term wearing of the ankle-foot orthosis.
In summary, the present application effectively overcomes various disadvantages of the prior art and has a high industrial utility value.
The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.
Claims (9)
1. A 3D printed ankle-foot orthosis, comprising: the ankle-foot orthosis comprises an ankle-foot orthosis body, an electrical stimulation device and a thin film pressure sensor;
the ankle-foot orthosis body consists of a shank supporting part, an ankle-foot fixing part and a foot support;
a reserved position is arranged at the upper end of the inner side of the shank supporting part, corresponding to the common peroneal nerve of the human body, so as to place the electrical stimulation device;
the thin film pressure sensor is arranged in the heel of the foot support;
the thin film pressure sensor is provided with a data line for connecting with the electrical stimulation device.
2. The 3D printed ankle-foot orthosis according to claim 1, wherein the membrane pressure sensor generates a pressure value signal in real time by the force applied at the heel of the foot rest and sends it to the electrostimulation device; the electrical stimulation device is preset with a discharge threshold, and when the pressure value signal is smaller than the discharge threshold, discharge is carried out.
3. The 3D printed ankle-foot orthosis according to claim 1, wherein the electrostimulation device comprises: an electrical stimulator, one or more stimulation electrodes, and a fibula tip-to-tip site.
4. The 3D printed ankle-foot orthosis according to claim 1, wherein the ankle-foot orthosis body is provided with one or more pairs of binding portions, respectively; the binding part is fixed in a buckling or sticking mode through an elastic band.
5. The 3D printing ankle-foot orthosis according to claim 1, wherein the body of the ankle-foot orthosis acquires corresponding three-dimensional data by scanning the foot using the front end of the Rodin4D, and is formed by selecting a nylon material and integrally forming and printing the nylon material by an SLS selective laser sintering technology.
6. The 3D printed ankle-foot orthosis according to claim 1, wherein the lower leg support is provided with one or more hollowed-out holes.
7. The 3D printed ankle-foot orthosis according to claim 1, wherein a neutral position of 90 degrees is employed between the lower leg support and the foot rest of the ankle-foot orthosis body.
8. The 3D printed ankle-foot orthosis according to claim 1, wherein the top end and edges of the body of the ankle-foot orthosis are finished to reduce friction to prevent secondary damage during wear.
9. The 3D printed ankle-foot orthosis according to claim 1, wherein a space is reserved at a position of the ankle joint corresponding to the ankle-foot fixing part; and/or soft cotton fabrics are lined at the ankle joints corresponding to the ankle and foot fixing parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920474461.0U CN210355008U (en) | 2019-04-09 | 2019-04-09 | 3D prints sufficient orthopedic ware of ankle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920474461.0U CN210355008U (en) | 2019-04-09 | 2019-04-09 | 3D prints sufficient orthopedic ware of ankle |
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| CN210355008U true CN210355008U (en) | 2020-04-21 |
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| CN201920474461.0U Active CN210355008U (en) | 2019-04-09 | 2019-04-09 | 3D prints sufficient orthopedic ware of ankle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109907865A (en) * | 2019-04-09 | 2019-06-21 | 上海交通大学医学院附属第九人民医院 | 3D printing ankle-foot orthosis |
| CN115245414A (en) * | 2021-04-28 | 2022-10-28 | 合肥工业大学 | Intelligent ankle-foot orthosis and manufacturing method thereof |
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2019
- 2019-04-09 CN CN201920474461.0U patent/CN210355008U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109907865A (en) * | 2019-04-09 | 2019-06-21 | 上海交通大学医学院附属第九人民医院 | 3D printing ankle-foot orthosis |
| CN115245414A (en) * | 2021-04-28 | 2022-10-28 | 合肥工业大学 | Intelligent ankle-foot orthosis and manufacturing method thereof |
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