CN213465279U - Rotation system is removed in backbone deformity - Google Patents
Rotation system is removed in backbone deformity Download PDFInfo
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- CN213465279U CN213465279U CN202022079120.9U CN202022079120U CN213465279U CN 213465279 U CN213465279 U CN 213465279U CN 202022079120 U CN202022079120 U CN 202022079120U CN 213465279 U CN213465279 U CN 213465279U
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- Prior art keywords
- sleeve
- jackscrew
- screw
- screwdriver
- long
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- 206010058907 Spinal deformity Diseases 0.000 claims abstract description 12
- 230000000399 orthopedic effect Effects 0.000 claims abstract description 7
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 206010039722 scoliosis Diseases 0.000 abstract description 12
- 230000036244 malformation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 208000022567 adolescent idiopathic scoliosis Diseases 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 206010050694 Congenital scoliosis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a vertebral column malformation rotation-removing system, which comprises a long-arm directional vertebral pedicle screw, a sleeve, a screwdriver, a jackscrew, a single-side fastener, a connecting rod and a parallel clamping groove; the long-arm directional pedicle screw comprises a screw body and a screw tail which are connected, and a clamping groove is formed in the outer wall of the screw tail; the head end of the sleeve is provided with an inverted U-shaped through hole to form two symmetrical side pieces, and the bottom ends of the side pieces and the inner wall of the side pieces are provided with bulges clamped with the clamping grooves; when the rotation correction is carried out, the nail body is placed in the bone of a patient, the sleeve is connected with the nail tail, the screwdriver is installed in the sleeve, the jackscrew is installed in the nail tail, the connecting rod penetrates through a gap between the jackscrew and the upper part of the nail body, one end of the jackscrew is tightly propped against the connecting rod, and the other end of the jackscrew is connected with the head of the screwdriver; the clamping of unilateral fastener is located the telescopic upper portion of homonymy, and the unilateral fastener of both sides is connected to parallel draw-in groove. The utility model discloses the scheme is reasonable, simple structure, and is compatible strong, removes rotatory orthopedic effect that facilitates and improve the spinal deformity for assisting scoliosis.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, a rotation system is removed in spine deformity is related to.
Background
Scoliosis, which is represented by adolescent idiopathic scoliosis and senile degenerative scoliosis, brings great pain to the body and mind of patients, and vertebral body rotation deformity is one of the main pathological changes of scoliosis. In the traditional scoliosis correction, correction is completed by installing pedicle screws and pre-bent titanium alloy rods and then performing operations such as rod rotation, translation, intervertebral space distraction, pressurization and the like. Wherein, the rotation removing process needs repeated operation, which is complicated and the shape correction is not thorough. The operation needs special material connecting rod and skilled temperature control skill, and the method can not completely correct the rotation deformity, has deformity residue and still needs the traditional orthopedic method for assistance. Therefore, how to use an efficient and simple derotation system to realize the scoliosis derotation process is a troublesome problem for the spinal surgeon.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that above-mentioned prior art exists, the utility model aims to provide a rotation system is removed in the spinal deformity, has solved the problem that scoliosis removed the loaded down with trivial details complicacy of rotatory process.
The utility model discloses a realize through following technical scheme:
a vertebral column deformity rotation removing system comprises a long-arm directional pedicle screw, a sleeve, a screwdriver, a jackscrew, a single-side clamping piece, a connecting rod and a parallel clamping groove;
the long-arm directional pedicle screw comprises a screw body and a screw tail which are connected, and a clamping groove is formed in the outer wall of the screw tail; the head end of the sleeve is provided with an inverted U-shaped through hole to form two symmetrical side pieces, and the bottom ends of the side pieces and the inner wall of the side pieces are provided with bulges clamped with the clamping grooves;
the single-side clamping piece is used for clamping the sleeve on the same side, and the parallel clamping grooves are used for connecting the left and right single-side clamping pieces;
when the rotation correction is carried out, the nail body is placed in the bone of a patient, the sleeve is connected with the nail tail, the screwdriver is installed in the sleeve, the jackscrew is installed in the nail tail, a gap between the jackscrew and the upper part of the nail body serves as a channel through which the connecting rod passes, one end of the jackscrew is tightly propped against the connecting rod, and the other end of the jackscrew is connected with the head of the screwdriver; the single-side clamping piece is clamped at the upper part of the sleeve at the same side, and the parallel clamping grooves are connected with the single-side clamping pieces at two sides.
Furthermore, the single-side clamping piece adopts a single-side clamping ring or a connector with a hole.
Furthermore, the hole coupler is a rectangular plate, a plurality of through holes are formed in the rectangular plate, and the diameter of each through hole is larger than the outer diameter of the sleeve.
Furthermore, the single-side snap ring is a hollow strip plate.
Furthermore, the connecting rod is a hexagonal square rod.
Furthermore, the vertebral column deformity rotation removing system also comprises a cap-shaped jackscrew which is screwed on the external thread of the long-arm directional pedicle screw after the long-arm directional pedicle screw is broken from the broken part.
Further, the screwdriver comprises a cone and a handle, wherein the cone and the handle are detachably connected.
Furthermore, the cone comprises a cone rod and a head, the cone rod comprises a thickening section and a connecting section, the diameter of the connecting section is smaller than that of the thickening section, and the diameter of the thickening section is smaller than or equal to the inner diameter of the sleeve; the upper end of the cone is connected with the handle.
Further, telescopic inner wall is equipped with the internal thread, adds thick section outer wall and is equipped with the external screw thread, sleeve and the section threaded connection that adds thick.
Furthermore, the diameter of the thickened section is 1-2 mm smaller than the inner diameter of the sleeve.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a vertebral column deformity rotation removing system, which comprises a long-arm directional pedicle screw, a sleeve, a screwdriver, a jackscrew, a unilateral fastener, a connecting rod and a parallel clamping groove, wherein the long-arm directional pedicle screw comprises a screw body and a screw tail; the long-arm directional pedicle screw and the sleeve are connected through the locking function of the screwdriver, and the rotary force applied to the sleeve can be dispersed to the side wall of the tail of the screw nail and the jackscrew connected with the screwdriver, so that the side wall of the screw can be protected by internal and external simultaneous stress, and sufficient lateral rotary force can be applied; the sleeves on the same side are integrally connected by means of the single-side clamping piece, the left sleeve and the right sleeve are integrally connected through the parallel clamping grooves, so that the sleeves can be rotated in multiple sections simultaneously, and compared with the traditional method, the sleeves are more convenient to operate, such as section-by-section expanding and pressurizing, and the effect is better. The utility model discloses the scheme is reasonable, simple structure, and is compatible strong, is applicable to most teenagers and adult scoliosis, removes rotation and facilitates for assisting scoliosis.
Furthermore, the connecting rod is a hexagonal square rod, and the locking function of the hexagonal square rod is improved compared with that of a round rod, so that the hexagonal square rod is not easy to rotate and loosen in the screw base.
Furthermore, after the long-arm directional pedicle screw is broken from the broken part, the cap-shaped jackscrew is screwed on the external thread of the long-arm directional pedicle screw, and the cap-shaped jackscrew can further lock the jackscrew, so that complications such as jackscrew loosening and falling-out of the internal fixation in vivo for a long time are avoided, and the long-term effect after orthopedic is ensured.
Drawings
FIG. 1 is a schematic structural view of the installation of the sleeve, the screwdriver and the long-arm directional pedicle screw of the present invention;
FIG. 2 is a schematic structural view of the long-armed directional pedicle screw of the present invention;
fig. 3 is a schematic structural view of the sleeve of the present invention;
FIG. 4 is a front view of FIG. 3;
FIG. 5 is an enlarged bottom view of FIG. 3;
FIG. 6 is a schematic structural view of the screwdriver of the present invention;
fig. 7 is a schematic structural view of a single-sided snap ring of the present invention;
FIG. 8 is a schematic view of the structure of the apertured coupling of the present invention;
fig. 9 is a schematic structural view of a parallel slot according to the present invention;
FIG. 10 is a schematic view of the connecting rod of the present invention;
fig. 11 is a usage state diagram of the present invention.
Wherein: 1 is a long-arm directional pedicle screw, 2 is a sleeve, 3 is a screwdriver, 4 is a jackscrew, 5 is a unilateral snap ring, 6 is a coupler with holes, 7 is a parallel clamping groove, and 8 is a connecting rod;
11 is a nail body, and 12 is a nail tail;
21 is a side sheet, 22 is a bulge;
31 is a taper rod, 32 is a handle, and 33 is a thickened section.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
the utility model discloses a rotation system is removed in backbone deformity, including directional pedicle of vertebral arch screw 1 of long arm, sleeve 2, screwdriver 3, jackscrew 4, unilateral fastener, connective bar 8 and parallel draw-in groove 7.
As shown in fig. 2, the long-arm directional pedicle screw 1 adopts an integrated design, and specifically comprises a screw body 11 and a screw tail 12 which are connected, wherein an internal thread is prefabricated on the inner wall of the screw tail 12, an external thread is prefabricated on the outer wall of the screw tail 12 and at one end close to the screw body 11, and a circular clamping groove is formed on the outer wall of the screw tail 12; as shown in fig. 3 to 5, the head end of the sleeve 2 is provided with an inverted U-shaped through hole, and two symmetrical side pieces 21 are provided with protrusions which are clamped with the clamping grooves at the bottom ends of the side pieces 21 and on the inner walls.
As shown in fig. 6, the screwdriver 3 includes a cone and a handle 32, the cone and the handle 32 being detachably connected; the cone comprises a cone rod 31 and a head, the cone rod 31 comprises an enlarged section 33 and a connecting section, the diameter of the connecting section is smaller than that of the enlarged section 33, and the diameter of the enlarged section 33 is smaller than or equal to the inner diameter of the sleeve 2.
Another connecting structure of the screwdriver 3 and the sleeve 2 is as follows: the diameter of the thickened section 33 of the screwdriver 3 is 1-2 mm smaller than the inner diameter of the sleeve 2. Therefore, an operator can operate the screw driver 3 simply and quickly and put the screw driver 3 into the sleeve 22, the screw driver 3 has small relative moving space in the sleeve 2, the relative displacement is small, the screw driver 3 cannot shake in the sleeve 2, on one hand, the long arm of the nail tail 12 can be protected from being broken, on the other hand, the sleeve 2 is locked and then has small lateral relative displacement with the long arm of the nail tail 12, and therefore a lever power arm is provided for resetting and rotating the spine.
The upper end of the cone is in threaded connection or buckling connection with the handle 32, and the handle 32 is a T-shaped handle or a vertical handle, so that the disassembly and the assembly are convenient.
The utility model discloses a screwdriver 3 is the improvement on the screwdriver commonly used, has carried out the thickening at the body of rod part of screwdriver. The screwdriver 3 has a total length of 25-35cm and a length exceeding the sleeve 2.
The unilateral fastener is used for being connected on the sleeve 2 on the same side, realizes the integrated connection of the unilateral long-arm directional pedicle screw 1, can adopt a unilateral snap ring 5 or a hole connector 6, and selects any tool according to the condition in the operation.
As shown in fig. 7, the single-side snap ring 5 is an annular hollow long steel plate, wherein the rectangular transverse diameter of the hollow fillet is matched with the outer diameter of the sleeve 2, so as to be conveniently clamped to the periphery of the sleeve 2.
As shown in fig. 8, the apertured coupling 6 is a rectangular plate having a plurality of through holes formed therein, the diameter of the through holes being slightly larger than the outer diameter of the sleeve 2.
As shown in fig. 9, the parallel slots 7 are strip-shaped structures made of toothed stainless steel and used for connecting the unilateral snap rings 5 on the left and right sides or the couplers 6 with holes, so that the integration of the nail arm sleeves 2 on the two sides is realized, and a mechanical conduction effect is provided for the rotation of the vertebral body. Specifically, parallel draw-in groove 7 includes connecting rod and a plurality of shelves pole of fixed connection at the connecting rod both ends, and the interval of adjacent shelves pole matches with the side of unilateral snap ring 5 or foraminiferous coupler 6, and the width is generally 0.5 ~ 1 cm.
As shown in fig. 10, the connecting rod 8 is a hexagonal rod with a hexagonal cross section, which is matched with the plane base of the long-arm directional pedicle screw 1. The square rod with the edge is larger in contact surface with the jackscrew after being locked compared with a traditional round rod, and the connecting rod 8 is prevented from rotating and loosening.
Generally, the length of the sleeve 2 is 20 to 30cm, the inner diameter is 50 to 70mm, and the outer diameter is 53 to 73 mm.
The long-arm directional pedicle screw 1, the hexagonal square rod, the jackscrew 4 and the cover-shaped jackscrew are made of titanium alloy materials, and the sleeve 2, the screwdriver 3, the coupler 6 with holes, the unilateral snap ring 5 and the parallel clamping groove 7 are made of alloy steel materials.
When the long-arm directional pedicle screw is used, the long-arm directional pedicle screw 1 is firstly placed, then the protrusion on the sleeve 2 is clamped into the circular clamping groove of the long-arm directional pedicle screw 1, then the jackscrew 4 is held by the screwdriver 3 and screwed into the side wall of the long-arm directional pedicle screw, and then the sleeve 2 is gradually locked by the screw thread on the screwdriver 3. Thereby realizing the integration of the screw, the screwdriver 3 and the sleeve 2 in the mechanical conduction and facilitating the subsequent operations of centrum derotation and the like.
FIG. 11 is a scoliosis multi-segment derotation orthosis procedure: the process is as before, the directional pedicle screws 1 of the long arm on both sides are firstly put in, the zygapophysis joint is loosened or the necessary osteotomy process is completed, thereby reducing the spinal stiffness. The sleeve 2 and the screwdriver 3 are installed again, so that the jackscrew 4 is not completely screwed into the screw tail 12 after the screwdriver 3 locks the sleeve 2, then a section of the sleeve 2 on the same side is clamped by the unilateral clamping ring 5 or the coupler 6 with holes, the unilateral clamping pieces on two sides are connected by the parallel clamping grooves 7, and an operator cooperates with an assistant to simultaneously push the unilateral clamping pieces and the parallel clamping grooves 7 in the spinal translation orthopedic operation to realize the lateral curvature correction and the centrum rotation removing process. After the coronal convex of the segment of the centrum and the rotation correction of the centrum, a connecting rod 8 with good physiological curvature is penetrated through a channel formed by a side opening at the lower end of the sleeve 2. And finally, after the connecting rod 8 completely enters the lateral channel of the sleeve 2, further removing residual deformity by operations such as distraction or pressurization, locking the connecting rod 8 by using the screwdriver 3, pulling out the sleeve 2 and the screwdriver 3 to finish the lateral convex orthopedic process, breaking the long-arm directional pedicle screw 1 from the broken part, and then finishing the surgical operations such as bone grafting fusion and the like according to the conventional operation.
When the scoliosis operation is performed to remove rotation, the long section adopts sectional operation and gradually penetrates the rod, and the short section adopts disposable operation to penetrate the rod. Thus, the problems of difficult rod loading, more residual deformity and the like in the traditional method are avoided.
Preferably, after the long-arm directional pedicle screw 1 is broken from the broken position, the cap-shaped jackscrew is screwed on the external thread of the long-arm directional pedicle screw 1 to play a role in protection, prevent the jackscrew 4 from falling out and effectively maintain the orthopedic effect.
The system and the method for removing the rotation of the spinal deformity can provide certain operation convenience for adolescent idiopathic scoliosis, congenital scoliosis and adult scoliosis, save operation time and improve operation curative effect.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all such changes are within the scope of the present invention.
Claims (10)
1. A vertebral column deformity rotation removing system is characterized by comprising a long-arm directional pedicle screw (1), a sleeve (2), a screwdriver (3), a jackscrew (4), a single-side clamping piece, a connecting rod (8) and parallel clamping grooves (7);
the long-arm directional pedicle screw (1) comprises a screw body (11) and a screw tail (12) which are connected, and a clamping groove is formed in the outer wall of the screw tail (12); the head end of the sleeve (2) is provided with an inverted U-shaped through hole to form two symmetrical side pieces (21), and the bottom ends of the side pieces (21) and the inner wall of the side pieces are provided with protrusions clamped with the clamping grooves;
the single-side clamping piece is used for clamping the sleeve (2) at the same side, and the parallel clamping grooves (7) are used for connecting the left and right single-side clamping pieces;
when the rotation orthopedic treatment is carried out, a nail body (11) is placed in a bone of a patient, a sleeve (2) is connected with a nail tail (12), a screwdriver (3) is installed in the sleeve (2), a jackscrew (4) is installed in the nail tail (12), a gap between the jackscrew (4) and the upper part of the nail body (11) serves as a channel through which a connecting rod (8) penetrates, one end of the jackscrew (4) is tightly propped against the connecting rod (8), and the other end of the jackscrew is connected with the head of the screwdriver (3); the single-side clamping piece is clamped at the upper part of the sleeve (2) at the same side, and the parallel clamping grooves (7) are connected with the single-side clamping pieces at two sides.
2. A spinal deformity derotation system according to claim 1, characterized in that the single-sided cartridge is a single-sided snap ring (5) or a holed coupler (6).
3. The spinal deformity removal system of claim 1, wherein the apertured coupling (6) is a rectangular plate having a plurality of through holes formed therein, the through holes having a diameter greater than the outer diameter of the sleeve (2).
4. The spinal deformity removal system of claim 1, wherein the unilateral snap ring (5) is a hollow elongated plate.
5. The system for derotation of spinal deformities according to claim 1, characterized in that the connecting rods (8) are hexagonal rods.
6. The spinal deformity deswirl system of claim 1, further comprising a cap-shaped jackscrew screwed on the external thread of the long-armed directional pedicle screw (1) after the long-armed directional pedicle screw (1) is broken off from the fracture.
7. The spinal deformity removal system of claim 1, wherein the driver (3) includes a cone and a handle (32), the cone and the handle (32) being removably connected.
8. The spinal deformity removal system of claim 7, wherein the cone comprises a cone shaft (31) and a head, the cone shaft (31) comprising a thickened section (33) and a connecting section, the diameter of the connecting section being smaller than the diameter of the thickened section (33), the diameter of the thickened section (33) being smaller than or equal to the inner diameter of the sleeve (2); the upper end of the cone is connected with a handle (32).
9. The spinal deformity removal system of claim 8, wherein the inner wall of the sleeve (2) is internally threaded and the outer wall of the enlarged section (33) is externally threaded, the sleeve (2) being threadedly connected to the enlarged section (33).
10. The spinal deformity derotation system according to claim 8, wherein the diameter of the thickened section (33) is 1-2 mm smaller than the inner diameter of the sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022079120.9U CN213465279U (en) | 2020-09-21 | 2020-09-21 | Rotation system is removed in backbone deformity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022079120.9U CN213465279U (en) | 2020-09-21 | 2020-09-21 | Rotation system is removed in backbone deformity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213465279U true CN213465279U (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022079120.9U Expired - Fee Related CN213465279U (en) | 2020-09-21 | 2020-09-21 | Rotation system is removed in backbone deformity |
Country Status (1)
| Country | Link |
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| CN (1) | CN213465279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117122400A (en) * | 2023-10-25 | 2023-11-28 | 中国医学科学院北京协和医院 | In vivo self-torsion growth friendly spinal column orthopedic system |
-
2020
- 2020-09-21 CN CN202022079120.9U patent/CN213465279U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117122400A (en) * | 2023-10-25 | 2023-11-28 | 中国医学科学院北京协和医院 | In vivo self-torsion growth friendly spinal column orthopedic system |
| CN117122400B (en) * | 2023-10-25 | 2024-02-20 | 中国医学科学院北京协和医院 | In vivo self-torsion growth friendly spinal column orthopedic system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210618 |