CN113143563A - Automatic orthopedic method of spinal column orthosis - Google Patents
Automatic orthopedic method of spinal column orthosis Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/02—Orthopaedic corsets
- A61F5/024—Orthopaedic corsets having pressure pads connected in a frame for reduction or correction of the curvature of the spine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/02—Orthopaedic corsets
- A61F5/022—Orthopaedic corsets consisting of one or more shells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
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- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
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Abstract
The invention discloses an automatic orthopedic method of a spinal orthosis, which comprises an orthosis body, wherein the orthosis body is provided with a controller and an adjusting mechanism for playing a role of tightness on the orthosis body, a stress point on the orthosis body is determined according to finite element analysis software, and a pressure sensor is arranged at the stress point to detect the pressure of the stress point and transmit the pressure value to the controller in real time; the controller presets a pressure threshold corresponding to each orthopedic stage, if the pressure value is smaller than the pressure threshold, the controller controls the adjusting mechanism to tighten the orthopedic device body, and if the pressure value is larger than the pressure threshold, the controller controls the adjusting mechanism to loosen the orthopedic device body. The controller controls the adjusting mechanism to automatically tighten or loosen the orthosis, so that the correction force at each stage is automatically adjusted, the correction effect is ensured, and the correction time is greatly shortened.
Description
Technical Field
The invention relates to the technical field of medical correction, in particular to an automatic correction method of a spinal column orthosis.
Background
The following background is provided to aid the reader in understanding the present invention and is not admitted to be prior art.
Adolescent Idiopathic Scoliosis (AIS) is a three-dimensional spinal deformity that occurs in adolescent age and involves a coronal plane, a sagittal plane, and an axial plane, and the pathogenesis of which is not yet determined. Adolescent idiopathic scoliosis accounts for 80% of idiopathic scoliosis and 2% -3% of the total number of adolescents. Scoliosis not only affects the physiological health of the patient, but also has a negative impact on the psychology of the patient. Currently, the treatment for AIS is mainly surgical treatment and non-surgical treatment, and the surgical treatment can be selected when the patient bends with the Cobb angle of more than 45 degrees; when the local Cobb angle is between 25 degrees and 45 degrees, non-operative treatment is generally adopted clinically in order to avoid nerve injury caused by operative treatment as much as possible. There are numerous methods of non-surgical treatment, with orthoses being the most common method.
The orthosis can maintain the stability of the spine, bones and joints, relieve pain or restore the load-bearing function thereof by limiting the abnormal movement of limbs or trunk joints; the deformity of the limb can be corrected by fixing the diseased part, so that the occurrence and development of the deformity are prevented; and the normal alignment of limbs and joints can be maintained by fixing and protecting the affected limbs, promoting the absorption of inflammation and edema. However, the traditional orthotics are complex and complicated in manufacturing method, low in accuracy and greatly influenced by the technical level of a rehabilitation technician.
With the advancement of computer technology, the design and fabrication of orthotics using computer aided design and manufacture has become widely used. The 3D printing method has the advantage of direct forming, can be used for pre-judging the orthopedic effect according to finite element analysis and optimizing the orthopedic device structure in time, can be used for producing products with structures more conforming to human mechanics, can be used for increasing the practicability and the attractiveness of the customized orthopedic device, and can meet the requirements of comfort and aesthetics of a human body. And the industrialization and globalization of personalized customization can be realized by combining the database technology and the communication technology.
However, the orthopedic device usually needs a long time for orthopedic, even several years, if only depending on the user's own perception of the corrective force, the sensitivity to the corrective force is easily reduced due to the wearing habit, and when the user wears the orthopedic device manually, the subjective consciousness is strong, the proper tightness degree cannot be judged, not only the corrective time is prolonged, but also the corrective effect is extremely difficult to guarantee, so that the orthopedic device is reduced or loses the corrective function.
Disclosure of Invention
The invention aims to provide an automatic correcting method of a spinal column corrector, which can automatically tighten or loosen the corrector by controlling an adjusting mechanism through a controller, realize the automatic adjustment of correcting force in each stage, ensure the correcting effect and greatly shorten the correcting time.
The invention provides an automatic orthopedic method of a spinal column orthopedic device, the orthopedic device comprises an orthopedic device body, and the automatic orthopedic method is characterized in that the orthopedic device body is provided with a controller and an adjusting mechanism which plays a role in tightness of the orthopedic device body, and the automatic orthopedic method comprises the following steps:
determining a stress point on the orthosis body according to finite element analysis software, arranging a pressure sensor at the stress point to detect the pressure of the stress point and transmitting the pressure value to the controller in real time;
the controller presets a pressure threshold corresponding to each orthopedic stage, if the pressure value is smaller than the pressure threshold, the controller controls the adjusting mechanism to tighten the orthopedic device body, and if the pressure value is larger than the pressure threshold, the controller controls the adjusting mechanism to loosen the orthopedic device body.
During the orthopedic period of the orthosis, the adjusting mechanism is controlled by the controller to tighten or loosen the orthosis body according to the pressure threshold which can be accepted and is suitable for each stage of the user. When the real-time pressure value of the stress point is smaller than the pressure threshold value, the controller controls the adjusting mechanism to tighten the orthosis body until the pressure value is equal to the pressure threshold value, and when the real-time pressure value is larger than the pressure threshold value, the controller controls the adjusting mechanism to loosen the orthosis body until the pressure value is equal to the pressure threshold value, so that the automatic adjustment of the corrective force in each stage is realized, the corrective effect is ensured, and the corrective time is greatly shortened.
Preferably, the stress points correspond to the rib of the thoracic cavity of the human body, the stress points comprise two main stress points and two auxiliary stress points, the two auxiliary stress points are respectively arranged at two sides of the rib of the thoracic cavity of the human body, and the two auxiliary stress points are distributed up and down. The rib of the thoracic cavity is chosen as the point of stress because this location can transmit force through the ribs to the spine. The three stress points have respective set pressure thresholds at each stage, so that three forces can change when the orthosis is relaxed and tightened, the main stress point is used as a main force point to play a role in reshaping, the two auxiliary stress points are used as auxiliary force points to be fixed, and meanwhile, some counter forces are properly added.
Preferably, the method for judging the orthopedic stage comprises the following steps: the pressure sensor collects pressure data, and the orthopedic degree is judged manually according to the pressure data. The orthopedic degree is judged manually according to the pressure data transmitted by the pressure sensor, a corresponding orthopedic stage is selected, and the controller controls the adjusting mechanism to tighten or loosen the orthopedic device body. The human may be a professional caregiver, a medical care provider, or the like.
Preferably, the pressure threshold of the force point does not exceed 70 MPA.
Preferably, the pressure threshold is obtained by obtaining the maximum external force applied to the spinal column segment of the orthosis body at each stage through finite element analysis software, and the pressure value detected by the pressure sensor at the stress point under the action of the maximum external force. The pressure threshold value is different from person to person, the maximum stress value suitable for a user is obtained in advance through finite element analysis software, the orthopedic data are scientific and accurate, and a good correcting effect can be obtained.
Preferably, the finite element analysis software is ANSYS or ABAQUS. Of course, the finite element analysis software is not limited to the two.
Preferably, the adjusting mechanism comprises a motor, a flexible cable and pulleys, one end of the flexible cable is connected with a motor winch, and the pulleys are connected through the flexible cable. The pressure sensor transmits a pressure value to the controller in real time, the real-time pressure value is compared with a pressure threshold value, if the pressure value is smaller than the pressure threshold value, the controller controls the motor to rotate to achieve tightening of the orthopedic device body, and if the pressure value is larger than the pressure threshold value, the controller controls the motor to rotate to achieve loosening of the orthopedic device. A flexible cord refers to a flexible wire that can withstand tension, such as a rope, tape, rope, chain, or the like.
The number of motors, cables and pulleys is not limited, for example, the adjusting mechanism comprises 1 set of motor and 7 sets of pulleys, and the 7 sets of pulleys are arranged on two sides of the orthosis body in a split manner.
Or the adjusting mechanism comprises two groups of adjusting units, each group of adjusting unit comprises 1 group of motors, 1 group of flexible cables and 6 groups of pulleys, the two groups of adjusting units move synchronously, and the two groups of adjusting units are arranged in an up-and-down symmetrical mode. Set up multiunit adjusting element, on the one hand, guarantee sufficient pulling force, on the other hand, can realize the precision and correct.
Preferably, the adjustment mechanism is located at the back of the orthosis body.
Still will provide external control port simultaneously for manual control device's relaxation is tightened up and is opened and close, and pressure sensor data can be transmitted to the high in the clouds through the internet, and orthopedic ware user can be through the elasticity of APP control orthopedic ware. At the moment, the external control port can display a proper pressure value range, a proper pressure value is selected according to the requirement of a user, and the controller controls the adjusting mechanism to tighten or loosen the orthosis body. The external control port can also be provided with a reminding operation to remind a user to tighten or loosen the orthosis body, such as a bell, vibration, an LED indicator light and the like.
Preferably, the motor has a self-locking function. Through the self-locking, the orthopedic device is prevented from being accidentally loosened, and the orthopedic device is reliably worn.
Preferably, the orthosis is provided with a power source. The power supply supplies power to the controller, the motor and the pressure sensor. The power supply can be an external power supply or a storage battery.
Preferably, the manufacturing method of the orthosis body comprises the following steps:
carrying out CT scanning on the trunk part of a user to obtain body surface data and vertebra data of the user, reconstructing the body surface data and the vertebra data and obtaining a body surface model and a vertebra model of the user;
establishing a plurality of intervertebral disc models according to the vertebra models to reconstruct a spine segment model, and establishing a spine segment finite element model according to a three-point force correction principle;
obtaining an orthosis body preliminary model according to the body surface model, determining a stress point on the body surface model, and performing material reduction treatment on the orthosis body preliminary model to obtain an orthosis body model;
and printing out the orthopedic device body entity by using a 3D technology.
Through fitting the personalized customized orthosis, the accuracy and the correction stability are improved, the requirements of a user can be met, and the wearing comfort is improved.
The invention has the beneficial effects that:
1. according to the invention, during the orthopedic period of the orthopedic device, the controller controls the adjusting mechanism to tighten or loosen the orthopedic device according to the pressure threshold value received by the user, so that the automatic adjustment of the corrective force at each stage is realized, the corrective effect is ensured, and the corrective time is greatly shortened.
2. Compared with the design idea of the traditional orthosis, the invention greatly improves the accuracy and the correction stability by fitting the personalized custom orthosis on the basis of the spinal CT scanning imaging data of the user; meanwhile, the wearing comfort can be improved by over-satisfying the requirements of users.
3. The orthotics in the invention establish a reference plane through three stress points during design, so that the model and the body surface model are ensured to be properly penetrated, the protruding depth of the correction cushion block is adjusted according to the stress analysis result, and the shell is properly subjected to material reduction treatment on the basis of ensuring the stress strength of the orthotics, so that the aim of light weight and attractive appearance is achieved, and the wearing comfort of a user is further improved.
4. The orthosis can transmit real-time data worn by a user to the cloud server through the controller, and the user or a clinician can control the orthosis through the APP at the mobile terminal.
Drawings
Fig. 1 is a flow chart diagram of an automated orthopedic method.
Fig. 2 is a structural view of the adjustment mechanism.
Fig. 3 is a structural view of the orthosis.
Fig. 4 is a flow chart of a method of manufacturing the orthosis body.
FIG. 5 is a schematic representation of a spinal column segment reconstruction model.
FIG. 6 is a schematic representation of a body surface model reconstruction.
FIG. 7 is a graphical representation of the results of a finite element force analysis of a spinal column segment.
Fig. 8 is a schematic diagram of a preliminary model of an orthosis body.
Fig. 9 is a finite element force analysis result of the orthosis body.
Fig. 10 is a schematic view of the result of the orthosis body material reduction process.
In the figure: the orthopedic device comprises an orthopedic device body 1, a shell 11, a correcting cushion block 12, a controller 2, a pressure sensor 3, an adjusting mechanism 4, a motor 41, a flexible cable 42 and a pulley 43.
Detailed Description
The present invention will be further described with reference to the structures or terms used herein. The description is given for the sake of example only, to illustrate how the invention may be implemented, and does not constitute any limitation on the invention.
As shown in fig. 1 to 3, the present invention discloses an automatic orthotic method of an orthosis, the orthosis comprising an orthosis body 1, the orthosis body 1 being provided with a controller 2, a pressure sensor 3 and an adjusting mechanism 4 for tightening or loosening the orthosis body 1, the automatic orthotic method of the orthosis comprising the steps of:
determining a stress point on the orthosis body according to finite element analysis software, arranging a pressure sensor 3 at the stress point to detect the pressure of the stress point and transmitting the pressure value to the controller 1 in real time;
the controller 1 presets a pressure threshold corresponding to each orthopedic stage, if the pressure value is smaller than the pressure threshold, the controller controls the adjusting mechanism 4 to tighten the orthopedic device body 1, and if the pressure value is larger than the pressure threshold, the controller controls the adjusting mechanism 4 to loosen the orthopedic device body 1.
During the orthotic process, the adjusting mechanism 4 is controlled by the controller to tighten or loosen the orthotic body 1 according to the pressure threshold that can be accepted and suitable by the user at each stage. When the real-time pressure value of the stress point is smaller than the pressure threshold value, the controller controls the adjusting mechanism to tighten the orthosis body until the pressure value is equal to the pressure threshold value, and when the real-time pressure value is larger than the pressure threshold value, the controller controls the adjusting mechanism to loosen the orthosis body until the pressure value is equal to the pressure threshold value, so that the automatic adjustment of the corrective force in each stage is realized, the corrective effect is ensured, and the corrective time is greatly shortened.
In some embodiments, the stress points correspond to the rib of the thoracic cavity of the human body, the stress points include two main stress points and two auxiliary stress points, the two auxiliary stress points are respectively arranged at two sides of the rib of the thoracic cavity of the human body, and the two auxiliary stress points are distributed up and down. The rib of the thoracic cavity is chosen as the point of stress because this location can transmit force through the ribs to the spine. The three stress points have respective set pressure thresholds at each stage, so that three forces can change when the orthosis is relaxed and tightened, the main stress point is used as a main force point to play a role in reshaping, the two auxiliary stress points are used as auxiliary force points to be fixed, and meanwhile, some counter forces are properly added.
As a specific example, the method for determining the orthopedic stage includes: the pressure sensor collects pressure data, and the orthopedic degree is judged manually according to the pressure data. The orthopedic degree is judged manually according to the pressure data transmitted by the pressure sensor, a corresponding orthopedic stage is selected, and the controller controls the adjusting mechanism to tighten or loosen the orthopedic device body. The human may be a professional caregiver, a medical care provider, or the like.
In some embodiments, the pressure threshold of the force point does not exceed 70 MPA.
In some embodiments, the pressure threshold is obtained by obtaining, through the finite element analysis software, a maximum external force applied to the spinal column segment of the orthosis body at each stage, and a pressure value detected by the pressure sensor at the force-bearing point under the action of the maximum external force. The pressure threshold value is different from person to person, the maximum stress value suitable for a user is obtained in advance through finite element analysis software, the orthopedic data are scientific and accurate, and a good correcting effect can be obtained.
In some embodiments, the finite element analysis software is ANSYS or ABAQUS. Of course, the finite element analysis software is not limited to the two.
In some embodiments, the adjustment mechanism 4 is located at the back of the orthosis body 1. The adjusting mechanism 4 comprises a motor 41, a flexible cable 42 and pulleys 43, wherein one end of the flexible cable 42 is connected with the motor 41 in a winch mode, and the pulleys 43 are connected through the flexible cable 42. The pressure sensor transmits a pressure value to the controller in real time, the real-time pressure value is compared with a pressure threshold value, if the pressure value is smaller than the pressure threshold value, the controller controls the motor to rotate to achieve tightening of the orthopedic device body, and if the pressure value is larger than the pressure threshold value, the controller controls the motor to rotate to achieve loosening of the orthopedic device. A flexible cord refers to a flexible wire that can withstand tension, such as a rope, tape, rope, chain, or the like.
The number of the motor 41, the wire 42, and the pulley 43 is not limited. In some embodiments, the adjustment mechanism includes 1 set of motors and 7 sets of pulleys, with 7 sets of pulleys separating two sides of the orthosis body 1, see fig. 2.
Or, the adjusting mechanism 4 comprises two groups of adjusting units, each group of adjusting unit comprises 1 group of motors, 1 group of flexible cables and 6 groups of pulleys, the two groups of adjusting units move synchronously, and the two groups of adjusting units are arranged in an up-and-down symmetrical manner. Set up multiunit adjusting element, on the one hand, guarantee sufficient pulling force, on the other hand, can realize the precision and correct.
In some embodiments, an external control port is further provided for manually controlling the loosening, tightening, opening and closing of the device, the pressure sensor data is transmitted to the cloud end through the internet, and the user of the orthosis can control the tightness of the orthosis through the APP. At the moment, the external control port can display a proper pressure value range, a proper pressure value is selected according to the requirement of a user, and the controller controls the adjusting mechanism to tighten or loosen the orthosis body. The external control port can also be provided with a reminding operation to remind a user to tighten or loosen the orthosis body, such as a bell, vibration, an LED indicator light and the like.
In some embodiments, the motor 41 has a self-locking function. Through the self-locking, the orthopedic device is prevented from being accidentally loosened, and the orthopedic device is reliably worn.
The orthosis is provided with a power supply. The power supply supplies power to the controller, the motor and the pressure sensor. The power supply can be an external power supply or a storage battery.
As shown in fig. 4-10, the present invention also discloses a spinal orthosis, which is manufactured by the following steps:
s1: and carrying out CT scanning on the trunk part of the user to obtain body surface data and vertebra data of the user, reconstructing the body surface data and the vertebra data and obtaining a vertebra model and a body surface model of the user.
As shown in fig. 5, the scanned DICOM image is imported into the mimics software, 12 vertebral bodies, i.e., Tl-T12, are separated out one by one, then the model is imported into the Geomagic software, and the geometric shape of the single vertebral body is smoothly processed, such as operations of eliminating surface features, loosening convex points, filling concave points, eliminating nails and the like, when the structure surface can meet the requirement of later grid division, the structure is shifted to the shape stage, and automatic curved surface processing is performed to obtain the vertebral bone model.
As shown in fig. 6, the scanned DICOM image is imported into the mimics software, the body surface model is separated from the software, then the DICOM image is imported into the geogic to modify the body surface model, and the curved surface is closed and filled to obtain the body surface model. Wherein the software is not limited to the above.
S2: establishing a plurality of intervertebral disc models according to the vertebra models to reconstruct the spine segment model, guiding the spine segment model into finite element analysis software, and establishing the spine segment finite element model according to the three-point force correction principle.
As shown in fig. 7, a vertebral bone model was introduced into SolidWorks, and an intervertebral disc model was created between the two vertebrae based on the CT scan image results. Inserting a reference plane with a proper angle between the two vertebras, drawing the shape of the section of the intervertebral disc, stretching the section in two directions after drawing to obtain an intervertebral disc model between the two vertebras, repeating the above operation steps to obtain 11 intervertebral disc models, thereby completing the reconstruction of the spinal segment model. The spinal segment model was imported into finite element analysis software, the corresponding materials were selected, the various models were placed in "engagement", and "spring attachment" was added to the model at the corresponding locations to simulate ligaments, and the underside surface of the T12 model was selected for fixation. According to the three-point force correction principle, external force with proper size and direction is set to act on the spine segment, grids with proper size are divided, and the spine segment finite element model is completed. After the finite element model of the spinal segment is constructed, the model is operated to obtain a stress simulation result, the simulation result is observed, the external force applied to the spinal segment is adjusted according to the simulation result until a satisfactory deformation result is obtained, and the direction and the magnitude of the external force at the moment are recorded.
S3: and obtaining an orthosis body preliminary model according to the body surface model, determining a stress point on the body surface model, and performing material reduction treatment on the orthosis body preliminary model to obtain an orthosis body model.
As shown in fig. 8, the body surface model was introduced into SolidWorks and the model was placed vertically. And establishing a plurality of equidistant horizontal reference planes, and acquiring an intersection line of the body surface model and the reference planes. And (3) on each reference plane, equidistantly outwards arranging each intersecting line by 5mm, and fitting and modifying the irregular curve by using a spline curve to obtain a smooth spline curve. This process is repeated to obtain several spline curves parallel to each other. Selecting a 'boundary surface' option, establishing a surface surrounding the body surface model, adjusting the sample line to enable the boundary surface to be smoother, and thickening the boundary surface to the outside by 4mm to obtain a primary model of the orthosis body.
As shown in fig. 9, three suitable force points are established on the body surface model, and the reference plane is established by the three points. And establishing a spherical rotator model at a proper position on the reference edge to ensure that the rotator model and the body surface model have proper penetration. And removing the redundant part to obtain the orthosis body model. And splitting the orthosis body model into a shell model and a correction cushion block model positioned at a stress point. As shown in FIG. 7, the shell model, the orthotic spacer model, and the body surface model were introduced together into SolidWorks for assembly. The model is imported into finite element analysis software, appropriate materials, such as plastics, are assigned to the orthosis body model and the body surface model, and appropriate connections are selected (the penetration portion is shrink fit, the other regions are non-penetration contact, and the friction coefficient between the surfaces is assumed to be 0.1). Then, the grids are divided and calculated, the protruding depth of the correction cushion block model is adjusted according to the stress analysis result, so that the correction cushion block model has proper contact pressure and area with the body surface model, and the shell model is subjected to proper material reduction treatment on the basis of ensuring the stress strength of the orthosis body, so that the purposes of light weight and attractive appearance are achieved.
S4: the 3D technology is used for printing out an orthopedic device body entity, and the orthopedic device body 1 entity comprises a shell 11 and a correcting cushion block 12 which are connected through a concave-convex groove, and the orthopedic device body entity is shown in figure 10.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (10)
1. An automatic orthotic method of a spinal orthosis, the orthosis comprising an orthosis body, characterized in that the orthosis body is provided with a controller and an adjustment mechanism acting to tighten or loosen the orthosis body, the automatic orthotic method comprising the steps of:
determining a stress point on the orthosis body according to finite element analysis software, arranging a pressure sensor at the stress point to detect the pressure of the stress point and transmitting the pressure value to the controller in real time;
the controller presets a pressure threshold corresponding to each orthopedic stage, if the pressure value is smaller than the pressure threshold, the controller controls the adjusting mechanism to tighten the orthopedic device body, and if the pressure value is larger than the pressure threshold, the controller controls the adjusting mechanism to loosen the orthopedic device body.
2. The method of claim 1, wherein the force points are corresponding to rib areas of the thoracic cavity of the human body, the force points include two main force points and two auxiliary force points, the two auxiliary force points are respectively arranged at two sides of the rib areas of the thoracic cavity of the human body, and the two auxiliary force points are respectively arranged at two sides of the rib areas of the thoracic cavity of the human body.
3. The method of claim 1, wherein the orthopedic stage is determined by: the pressure sensor collects pressure data, and the orthopedic degree is judged manually according to the pressure data.
4. The method of claim 1, wherein the threshold pressure is obtained by finite element analysis software to obtain the maximum external force applied to the spinal segment of the orthosis body at each stage, and the pressure value detected by the pressure sensor at the point of application is obtained by the maximum external force.
5. The method of automatically orthotics of claim 1, wherein the finite element analysis software is ANSYS or ABAQUS.
6. The method of claim 1, wherein the adjustment mechanism comprises a motor, a cable, and a pulley, wherein the cable is connected at one end to a motor winch, and wherein the pulley is connected to the cable.
7. The method of claim 6, wherein the adjustment mechanism comprises 1 set of motors and 7 sets of pulleys, and the 7 sets of pulleys are arranged on two sides of the orthosis body, or the adjustment mechanism comprises two sets of adjustment units, each set of adjustment units comprises 1 set of motors, 1 set of flexible cables and 6 sets of pulleys, the two sets of adjustment units move synchronously, and the two sets of adjustment units are arranged symmetrically up and down.
8. The method of claim 6, wherein the motor has a self-locking function.
9. A method of automatically orthotic a spinal orthosis according to claim 1, wherein the orthosis is provided with a power source, the power source being either an external power source or a battery.
10. The method of automatically orthotics of claim 1, wherein the orthosis body is fabricated by:
carrying out CT scanning on the trunk part of a user to obtain body surface data and vertebra data of the user, reconstructing the body surface data and the vertebra data and obtaining a body surface model and a vertebra model of the user;
establishing a plurality of intervertebral disc models according to the vertebra models to reconstruct a spine segment model, and establishing a spine segment finite element model according to a three-point force correction principle;
obtaining an orthosis body preliminary model according to the body surface model, determining a stress point on the body surface model, and performing material reduction treatment on the orthosis body preliminary model to obtain an orthosis body model;
and printing out the orthopedic device body entity by using a 3D technology.
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| CN115089359A (en) * | 2022-06-15 | 2022-09-23 | 郑语熙 | Adjustable scoliosis orthosis and use method thereof |
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