Skoliosis Orthopedic rod using methodTechnical field:
The present invention relates to skoliosis Orthopedic rod using method.
Background technology:
Various types of skoliosis deformity serious harm patients' that the idiopathic scoliosis of take is representative physical and mental health.According to lopsided position and degree, selecting suitable antidote, is the key point for the treatment of.Conventional treatment means is to adopt to insert pedicle screw, hook system at the bilateral of lopsided spinal column, then at an orthopedic side, enter Orthopedic rod, method for posting is to complete Orthopedic rod nail, inserting in hook system one by one by revolving the technology such as rod, translation, and finally by intersegmentally strutting, the technology such as pressurization or translation completes final orthopedic, then in secondary side, lay supporting rod, finally between two rods, lay horizontal connection.At Orthopedic rod, insert one by one in the process of nail, hook, be easy to occur the situations such as screw is pulled out, hook displacement, orthotic procedure difficulty, needs assistive device many, has obvious stress concentration phenomenon, easily causes nerve injury.The existing device that adopts shape memory alloy bar to correct of recording in prior art, but be only the rectification design that approaches bidimensional, can not effectively realize three-dimensional correction, only at coronalplane and sagittal plane, there is correcting partly, be difficult to realize the turning effort of going of axle shape face, therefore, in the rectification of modern skoliosis deformity, apply less; The inventor's publication number is that the Chinese patent of CN100344264C discloses a kind of spinal column side convex three-dimentional correcting device, refer to and adopt Nitinol Orthopedic rod and pedicle screw, the head of a nail in operation process, to form a set of three-dimensional correction device, automatically realize orthopedic.But the sagittal radian of this patent memorial alloy Orthopedic rod memory is according to normal human's spinal column sagittal plane, to bend degree to remember, and do not consider the drag effect of lopsided spinal column to Orthopedic rod, therefore, the position of the lopsided spinal column after the orthopedic force of Orthopedic rod and lopsided spinal column resistance balance is not positioned at the physiology Qu Du position of normal spinal column, but still in lopsided state, and form the protruding body of side and there is the protruding internal agent of side, its active force may gradually be greater than Orthopedic rod active force and the deformity still having is increased the weight of.
Summary of the invention:
The invention provides a kind of skoliosis Orthopedic rod using method, can implement better correcting to lopsided spinal column.
Technical scheme of the present invention is such: skoliosis Orthopedic rod using method, comprises the steps:
1), according to the protruding degree of side and the position of side convex ridge post, calculate different segment side convex ridge post and return to normal physiological and bend the deformation recovery power size that degree needs and the scope of recovering yardstick, described recovery yardstick comprises that sagittal plane recovers yardstick and coronalplane recovers yardstick;
2) two one way memorial alloys that, selection and above-mentioned restoring force size match are made Orthopedic rod, it is carried out to shape memory heat treatment, the sagittal shape memory of Orthopedic rod is by the smooth radian being formed by connecting of the little arc of multistage, the different segment of the corresponding spinal column of the little arc of multistage, described each section little arc is less than described recovery yardstick to the distance of the corresponding sections of normal physiological spinal column, and contrary with side convex ridge post with respect to the position of normal physiological spinal column.
3), two Orthopedic rods are carried out moulding according to side convex ridge post coronalplane and sagittal form;
4), outside after spinal column is completed after soft tissue release, within the scope of scoliotic surgical orthopaedic, the pedicle screw with the effect of appropriateness locking Orthopedic rod is all inserted in the both sides of each sections;
5), to otch cooling, moulding two good Orthopedic rods are inserted in pedicle screw, and to being positioned at the Orthopedic rod appropriateness locking of pedicle screw, form three-dimensional correction device;
6), to this three-dimensional correction device rewarming, two Orthopedic rods are replied to shape memory, realize automatic malformation correction.
Also comprise the steps: to carry out to strut between the sections of recessed side or the sections of protruding side between pressurized operation, complete orthotic procedure.
Further step is: according to the position of the protruding deformity of homonymy not, install and fix horizontal connection.
Described horizontal connection is connected with the Nitinol Orthopedic rod of lopsided spinal column both sides respectively by the clip at its two ends, and every pair of clip is tightened in horizontal connection by the nut of its both sides.
The described Nitinol that is nickeliferous 50.3%-51.8at% through the material of the heat treated Nitinol Orthopedic rod of shape memory, and through having the shape memory heat treatment of one way memory effect, its surface is through high-temperature oxydation inertization and politef spray treatment.
The diameter of described Nitinol Orthopedic rod is 6.5mm～7.5mm, and length is 50mm～80mm.
The screw diameter of described pedicle screw is 3.5mm～6.0mm, and the length of pedicle screw is 35mm～55mm.
The material of described pedicle screw, the head of a nail and horizontal connection is titanium alloy or Nitinol, and surface is through high-temperature oxydation inertization and politef spray treatment.
Described pedicle screw has and the moving upper shed coordinating of Orthopedic rod, and described upper shed top is provided with the head of a nail that can regulate described Orthopedic rod locking degree.
The phase transition temperature of described correction stick is 30-32 ℃.
Described rewarming temperature is 50 °-55 ℃, the large yarn pad mulching otch scope of rewarming mode for adopting polylith to soak 50 ° of-55 ℃ of hot salt brines.
Technique effect of the present invention: the present invention is owing to having considered the effect that contends with of side convex ridge post and Orthopedic rod active force, the shape memory of Orthopedic rod is improved to shape contrary with side convex ridge post side convex direction, that surpass normal physiological spinal column degree in the wrong certain limit, therefore, at Orthopedic rod in shape memory Recovery Process, can get back to the certain limit of bending degree over normal physiological spinal column, now, side convex ridge post is positioned at or approaches the degree in the wrong of normal physiological spinal column just, thereby can implement better correcting to lopsided spinal column; The inventive method is owing to inserting pedicle screw in each sections both sides simultaneously, and Orthopedic rod is locked by appropriateness, the pedicle screw of each sections and Orthopedic rod can have mutual motion, therefore, in the process of replying to shape memory at the Orthopedic rod of three-dimensional correction device, be the correcting separately of each sections of realizing, and be the three-dimensional correction effect realizing; The inventive method is the rewarming carrying out after three-dimensional correction device installs at low temperatures, is therefore orthopedic to lopsided spinal column integral body, orthopedic even, the few intercurrent disease that inner matter is relevant, save operating time simultaneously, reduced aid, thereby saved the expense of aid.
To between the sections of recessed side, strut or the sections of protruding side between pressurized operation, it is local orthopedic more accurate to make.
According to the position of the protruding deformity of homonymy not, install and fix horizontal connection, can make Orthopedic rod more firm, can make to be remedied to spinal column normal or that approach physiology normal condition and more stably remain on this state.
The described Nitinol that is nickeliferous 50.3%-51.8at% through the material of the heat treated Nitinol Orthopedic rod of shape memory, and through thering is the shape memory heat treatment of one way memory effect, its surface is through high-temperature oxydation inertization and politef spray treatment, not only make it have good shape memory recovery capacity, and can make metal ion not be released by surface treatment, politef spray treatment can further strengthen its surperficial corrosion resistance.
The specific embodiment:
Skoliosis Orthopedic rod using method, comprises the steps:
1), according to the protruding degree of side and the position of side convex ridge post, calculate different segment side convex ridge post and return to normal physiological and bend the deformation recovery power size that degree needs and the scope of recovering yardstick, described recovery yardstick comprises that sagittal plane recovers yardstick and coronalplane recovers yardstick;
2) two one way memorial alloys that, selection and above-mentioned restoring force size match are made Orthopedic rod, it is carried out to shape memory heat treatment, the sagittal shape memory of Orthopedic rod is by the smooth radian being formed by connecting of the little arc of multistage, the different segment of the corresponding spinal column of the little arc of multistage, described each section little arc is less than described recovery yardstick to the distance of the corresponding sections of normal physiological spinal column, and contrary with side convex ridge post with respect to the position of normal physiological spinal column.The described Nitinol that is nickeliferous 50.3%-51.8at% through the material of the heat treated Nitinol Orthopedic rod of shape memory, and through having the shape memory heat treatment of one way memory effect, its surface is through high-temperature oxydation inertization and politef spray treatment.The diameter of described Nitinol Orthopedic rod is 6.5mm～7.5mm, and length is 50mm～80mm.The screw diameter of preferred described pedicle screw is 3.5mm～6.0mm, and the length of pedicle screw is 35mm～55mm.The phase transition temperature of described correction stick is 30-32 ℃.
3), two Orthopedic rods are carried out moulding according to side convex ridge post coronalplane and sagittal form;
4), outside after spinal column is completed after soft tissue release, within the scope of scoliotic surgical orthopaedic, the pedicle screw with the effect of appropriateness locking Orthopedic rod is all inserted in the both sides of each sections; Described pedicle screw has and the moving upper shed coordinating of Orthopedic rod, and described upper shed top is provided with the head of a nail that can regulate described Orthopedic rod locking degree.
5), to otch cooling, moulding two good Orthopedic rods are inserted in pedicle screw, and to being positioned at the Orthopedic rod appropriateness locking of pedicle screw, form three-dimensional correction device;
6), to this three-dimensional correction device rewarming, two Orthopedic rods are replied to shape memory, realize automatic malformation correction.Carry out strutting between the sections of recessed side or the sections of protruding side between pressurized operation, complete orthotic procedure.Described rewarming temperature is 50 °-55 ℃, the large yarn pad mulching otch scope of rewarming mode for adopting polylith to soak 50 ° of-55 ℃ of hot salt brines.
Further step is: according to the position of the protruding deformity of homonymy not, install and fix horizontal connection.Described horizontal connection is connected with the Nitinol Orthopedic rod of lopsided spinal column both sides respectively by the clip at its two ends, and every pair of clip is tightened in horizontal connection by the nut of its both sides.The material of described pedicle screw, the head of a nail and horizontal connection is titanium alloy or Nitinol, and surface is through high-temperature oxydation inertization and politef spray treatment.
Technique effect of the present invention: the present invention is owing to having considered the effect that contends with of side convex ridge post and Orthopedic rod active force, the shape memory of Orthopedic rod is improved to shape contrary with side convex ridge post side convex direction, that surpass normal physiological spinal column degree in the wrong certain limit, therefore, at Orthopedic rod in shape memory Recovery Process, can get back to the certain limit of bending degree over normal physiological spinal column, now, side convex ridge post is positioned at or approaches the degree in the wrong of normal physiological spinal column just, thereby can implement better correcting to lopsided spinal column; The inventive method is owing to inserting pedicle screw in each sections both sides simultaneously, and Orthopedic rod is locked by appropriateness, the pedicle screw of each sections and Orthopedic rod can have mutual motion, therefore, in the process of replying to shape memory at the Orthopedic rod of three-dimensional correction device, be the correcting separately of each sections of realizing, and be the three-dimensional correction effect realizing; The inventive method is the rewarming carrying out after three-dimensional correction device installs at low temperatures, is therefore orthopedic to lopsided spinal column integral body, orthopedic even, the few intercurrent disease that inner matter is relevant, save operating time simultaneously, reduced aid, thereby saved the expense of aid.
To between the sections of recessed side, strut or the sections of protruding side between pressurized operation, it is local orthopedic more accurate to make.
According to the position of the protruding deformity of homonymy not, install and fix horizontal connection, can make Orthopedic rod more firm, can make to be remedied to spinal column normal or that approach physiology normal condition and more stably remain on this state.
The described Nitinol that is nickeliferous 50.3%-51.8at% through the material of the heat treated Nitinol Orthopedic rod of shape memory, and through thering is the shape memory heat treatment of one way memory effect, its surface is through high-temperature oxydation inertization and politef spray treatment, not only make it have good shape memory recovery capacity, and can make metal ion not be released by surface treatment, politef spray treatment can further strengthen its surperficial corrosion resistance.