CN115670622A - In vivo self-distracting convertible growth-friendly spinal orthopedic system - Google Patents
In vivo self-distracting convertible growth-friendly spinal orthopedic system Download PDFInfo
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- CN115670622A CN115670622A CN202211700365.6A CN202211700365A CN115670622A CN 115670622 A CN115670622 A CN 115670622A CN 202211700365 A CN202211700365 A CN 202211700365A CN 115670622 A CN115670622 A CN 115670622A
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Abstract
The present invention provides an in vivo self-distracting transformable growth-friendly spinal orthopedic system, comprising: an inner fixing rod; the fixing structure comprises: the inner fixing rod is separated from the inner fixing rod and is fixed on the side wall of the inner fixing rod by applying friction force; locking structure: the inner fixing rod is separated from the inner fixing rod and is fixed on the side wall of the inner fixing rod by applying friction force; the opening structure: sliding on the outer side wall of the inner fixing rod along a preset track; the elastic structure is as follows: the locking structure is sleeved on the outer side wall of the inner fixing rod and is positioned in the direction of the locking structure far away from the fixing structure; one end of the elastic structure is propped against the side wall of the locking structure, and the other end of the elastic structure is propped against the side wall of the opening structure; driving the opening structure to move away from the locking structure; the standby bolt is in threaded connection with the opening structure, and the opening structure can be fixed on the side wall of the inner fixing rod by applying friction force. The invention has the beneficial effects that: the problem of traditional growing stick need relapse a lot of general anesthesia operations and open and strut is solved, utilize spring structure to realize that the growing stick is in internal initiative and last elasticity struts.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a self-supporting convertible growth-friendly spinal orthopedic system in vivo.
Background
Early Onset Scoliosis (EOS) refers to a spinal deformity diagnosed by a child patient before 10 years old, and for the purpose of controlling the spinal deformity and simultaneously keeping the growth potential of the spine and the thorax, an orthopedic operation using a growth-friendly endoprosthesis is required. At present, the traditional growing rod, the magnetic control growing rod and the like are commonly used, but the obvious defects exist:
with the change of the body development and the illness state of the children patients, the back skin is cut for adjusting the growth rod by a plurality of general anesthesia operations.
The present invention addresses the above-mentioned problems by providing an in vivo self-distracting, transformable growth-friendly spinal orthopedic system.
Disclosure of Invention
To overcome the problems noted in the background, the present invention provides an in vivo self-distracting, transformable growth-friendly spinal orthopedic system.
An in vivo self-distracting transformable growth-friendly spinal orthopedic system, comprising:
an inner fixing rod;
the fixing structure comprises: the inner fixing rod is separated from the inner fixing rod and is fixed on the side wall of the inner fixing rod by applying friction force;
locking structure: the inner fixing rod is separated from the inner fixing rod and is fixed on the side wall of the inner fixing rod by applying friction force;
the opening structure: sliding on the outer side wall of the inner fixing rod along a predetermined track;
the elastic structure is as follows: the locking structure is sleeved on the outer side wall of the inner fixing rod and is positioned in the direction of the locking structure far away from the fixing structure; one end of the elastic structure is propped against the side wall of the locking structure, and the other end of the elastic structure is propped against the side wall of the opening structure; driving the expanding structure to move away from the locking structure;
the standby bolt is in threaded connection with the opening structure, and the opening structure can be fixed on the side wall of the inner fixing rod by applying friction force.
Further, the fixing structure comprises a first fixing bolt, a first mounting position and a first locking bolt; the first mounting position is arranged at the top of the first fixing bolt; the first locking bolt locks the inner fixing rod on the side wall of the first mounting position.
Furthermore, two or more than two groups of fixing structures are arranged, and the fixing structures are arranged in the direction of the locking structure far away from the elastic structure.
Further, the locking structure comprises a locking bracket and a second locking bolt; a first through hole matched with the inner fixing rod is formed in the side wall of the locking support; and a first threaded hole matched with the second locking bolt is formed in the top of the locking support.
Further, the side wall of the first through hole is communicated with the bottom of the first threaded hole; the second locking bolt locks the inner fixing rod on the side wall of the first through hole.
Furthermore, the opening structure comprises a connecting structure, a moving rod and a limiting structure; the limiting structure and the moving rod are separated and fixed on the side wall of the moving rod by applying friction force; one end of the connecting structure is connected with the inner fixing rod in a sliding mode, and the other end of the connecting structure is separated from the moving rod and fixed on the side wall of the moving rod by applying friction force.
Further, the connecting structure comprises a connecting bracket and a third locking bolt; a second through hole and a third through hole are formed in the side wall of the connecting support; a second threaded hole and a third threaded hole are formed in the top of the connecting support; the side wall of the second through hole is communicated with the bottom of the second threaded hole; and the side wall of the third through hole is communicated with the bottom of the third threaded hole.
Further, the second through hole is matched with the inner fixing rod; the third through hole is matched with the movable upper; the third threaded holes are matched with third locking bolts; the second threaded hole is matched with the spare bolt.
Furthermore, the limiting structure comprises a second fixing bolt, a second mounting position and a fourth locking bolt; the second mounting position is arranged at the top of the second fixing bolt; the fourth locking bolt locks the movable upper on the side wall of the second installation position.
Furthermore, two or more sets of limiting structures are arranged and are arranged on the side wall of one side of the moving rod.
The invention has the beneficial effects that: the problem of traditional growing stick need relapse a lot of general anesthesia operations and open and strut is solved, utilize spring structure to realize that the growing stick is in internal initiative and last elasticity struts.
Drawings
FIG. 1 is a schematic structural view of a spinal orthopedic system embodying the present invention;
FIG. 2 is a schematic structural view of a fastening structure embodying the present invention;
FIG. 3 is a schematic view of the installation of a locking mechanism embodying the present invention;
FIG. 4 is a schematic structural view of a connection structure embodying the present invention;
FIG. 5 is a schematic structural diagram of a position limiting structure for implementing the present invention;
FIG. 6 is a schematic structural view of another spinal correction system embodying the present invention;
in the figure, 1, an inner fixed rod; 2. a fixed structure; 21. a first fixing bolt; 22. a first mounting location; 23. a first locking bolt; 3. a locking structure; 31. locking the bracket; 32. a first mounting hole; 33. a second locking bolt; 4. an elastic structure; 51. a connecting structure; 511. connecting a bracket; 512. a second through hole; 513. a third through hole; 514. a third locking bolt; 52. moving the rod; 53. a limiting structure; 531. a second fixing bolt; 532. a second mounting location; 533. a fourth locking bolt; 6. a spare bolt; 7. an in vivo pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
An in vivo self-distracting transformable growth-friendly spinal orthopedic system as shown in fig. 1, comprising:
an inner fixing rod 1;
the fixing structure 2: is separated from the inner fixed rod 1 and is fixed on the side wall of the inner fixed rod 1 by applying friction force;
locking structure 3: is separated from the inner fixed rod 1 and is fixed on the side wall of the inner fixed rod 1 by applying friction force;
the opening structure: sliding on the outer side wall of the inner fixing rod 1 along a predetermined track;
the elastic structure 4: the locking structure is sleeved on the outer side wall of the inner fixing rod 1 and is positioned in the direction of the locking structure 3 away from the fixing structure 2; one end of the elastic structure 4 is propped against the side wall of the locking structure 3, and the other end is propped against the side wall of the opening structure; driving the spreading structure to move away from the locking structure 3;
the standby bolt 6 is in threaded connection with the opening structure, and the opening structure can be fixed on the side wall of the inner fixing rod 1 by applying friction force.
In particular, the elastic structure 4 is a linear compression spring. When in use, the linear compression spring is compressed and then the opening structure is arranged on the inner fixed rod 1. At this moment, the linear compression spring can generate force towards two sides for recovering the original form of the linear compression spring, the locking structure 3 positioned on one side of the linear compression spring is kept still, the opening structure positioned on the other side of the linear compression spring slides on the inner fixing rod 1, so that the outward force of the linear compression spring is all applied to the opening structure, and the opening structure is driven to move towards the direction far away from the locking structure 3.
When the elasticity provided by the elastic structure 4 offsets with the pulling force of the spine of the patient, the elastic structure 4 can not push the distraction structure to move, the secondary operation is carried out, the distraction structure is fixed on the side wall of the internal fixing rod 1 by using the standby bolt 6, and the in-vivo self-distraction convertible growth-friendly spine orthopedic system is converted into a common growth rod to continue to support the spine of the patient.
Specifically, the length of the spring is measured through X-ray, the deformation X of the measured length and the initial length of the spring is calculated, and the deformation X is substituted into an elastic force calculation formula of the spring:
wherein: k is the elastic coefficient and x is the deformation amount.
And calculating the residual elasticity of the spring at the moment, performing secondary operation in time when the residual elasticity of the spring is insufficient, installing a standby bolt 6, fixing the distraction structure on the side wall of the inner fixing rod 1, and transforming the in-vivo self-distraction convertible growth-friendly spine orthopedic system into a common growth rod to continuously support the spine of the patient.
Or as shown in fig. 6, an internal pressure sensor 7 is arranged between the locking structure 3 and the sliding structure, the value of the spring force is obtained through the internal pressure sensor 7, the attenuation condition of the spring force is found in time, and a secondary operation is performed in time according to the measurement result.
The fixing structure 2 shown in fig. 1 and 2 comprises a first fixing bolt 21, a first mounting position 22 and a first locking bolt 23; the first mounting position 22 is disposed on the top of the first fixing bolt 21, and the two are integrally connected. First installation position 22 is U type structure, and first installation position 22 and first locking bolt 23 threaded connection, and first locking bolt 23 pushes up interior fixed rod 1 on the inner wall of first installation position 22 during the use, and the relative position of applied frictional force locking fixed knot structure 2 and interior fixed rod 1.
Preferably, set up two sets of or fixed knot structure 2 more than two sets of, fixed knot constructs 2 and all installs on interior fixed rod 1 to improve the stability of interior fixed rod 1 installation. The fixing structure 2 can also correct scoliosis in the top vertebral area of scoliosis, so that the coronal shift is recovered to be normal, and the scoliosis is fixed and fused.
The locking structure 3 shown in fig. 1 and 3 comprises a locking bracket 31 and a second locking bolt 33; a first through hole matched with the inner fixing rod 1 is formed in the side wall of the locking bracket 31; a first screw hole adapted to the second locking bolt 33 is provided at the top of the locking bracket 31. The side wall of the first through hole is communicated with the bottom of the first threaded hole; after the second locking bolt 33 is screwed into the first threaded hole, the bottom end face of the second locking bolt 33 is in contact with the side wall of the inner fixing rod 1, the inner fixing rod 1 is pushed against the inner wall of the first through hole, and the relative position of the locking structure 3 and the inner fixing rod 1 is locked by friction force.
During the use earlier penetrates first through-hole with interior fixed rod 1 to keep first screw hole towards the doctor, after adjustment locking support 31 to suitable position, twist first screw hole with second locking bolt 33, the relative position of locking structure 3 and interior fixed rod 1.
As shown in fig. 1, the spreading structure includes a connecting structure 51, a moving rod 52 and a limiting structure 53; the limiting structure 53 is separated from the moving rod 52 and is fixed on the side wall of the moving rod 52 by applying friction force; one end of the connecting structure 51 is slidably connected to the inner fixing rod 1, and the other end is separated from the moving rod 52 and fixed to the sidewall of the moving rod 52 by applying a frictional force.
Preferably, two or more sets of limit structures 53 are provided, and the limit structures 53 are installed on the moving rod 52, so as to improve the installation stability of the moving rod 52. The position-limiting structure 53 can also correct scoliosis in the top vertebral area of scoliosis, so that the coronal shift is recovered to be normal, and the scoliosis is fixed and fused.
One end of the elastic structure 4 is pressed against the side wall of the locking structure 3, and the other end is pressed against the side wall of the connecting structure 51; the elastic structure 4 pushes the connecting structure 51 to move on the inner fixed rod 1 in a direction away from the locking structure 3, thereby pushing the moving rod 52 and the limiting structure 53 to move.
The connecting structure 51 shown in fig. 1 and 4 comprises a connecting bracket 511 and a third locking bolt 514; a second through hole 512 and a third through hole 513 are arranged on the side wall of the connecting bracket 511; a second threaded hole and a third threaded hole are formed in the top of the connecting bracket 511; the side wall of the second through hole 512 is communicated with the bottom of the second threaded hole; the side wall of the third through hole 513 is communicated with the bottom of the third threaded hole. The second through hole 512 is matched with the inner fixing rod 1; the third through hole 513 is matched with the movable upper; the third threaded hole is adapted to the third locking bolt 514; the second threaded hole is adapted to the spare bolt 6.
Specifically, the diameter of the second through hole 512 is larger than the outer diameter of the moving rod 52, and the third through hole 513 is completely matched with the inner fixed rod 1, and preferably, the diameter of the second through hole 512 is different from the outer diameter of the moving rod 52 by 1mm.
The use of the connection structure 51 is divided into the following steps:
1. locking the positional relationship of the internal fixation rod 1 and the connecting structure 51
Firstly, sleeving an elastic structure 4 outside an inner fixed rod 1; then the connecting bracket 511 is sleeved on the outer side wall of the inner fixing rod 1, and the connecting bracket 511 is pushed to move towards the locking structure 3 to compress the elastic structure 4; then, the spare bolt 6 is screwed into the second threaded hole, the bottom of the spare bolt 6 presses the inner fixing rod 1, the inner fixing rod 1 is pressed on the side wall of the second through hole 512, and the position relation between the inner fixing rod 1 and the connecting structure 51 is locked by applying friction force;
2. locking the positional relationship of the moving rod 52 and the connecting structure 51
Firstly, the connecting bracket 511 is sleeved on the outer side wall of the moving rod 52; then, the third locking bolt 514 is screwed into the third threaded hole, the bottom of the third locking bolt 514 presses the moving rod 52, the moving rod 52 is pressed on the side wall of the third through hole 513, and the position relation between the moving rod 52 and the connecting structure 51 is locked by applying friction force;
3. the locking between the inner fixing rod 1 and the connecting structure 51 is released;
after the inner fixing rod 1 and the moving rod 52 are respectively installed on the fixing structure 2 and the limiting structure 53, the spare bolt 6 pressing the inner fixing rod 1 is loosened, and the third locking bolt 514 pressing the moving rod 52 is kept still. At this time, the elastic structure 4 pushes the connecting structure 51 to move towards the direction away from the locking structure 3, that is, the part of the spine connected with the internal fixing rod 1 is pushed to gradually move away from the part of the spine connected with the moving rod 52, so as to achieve the purpose of treatment.
The limiting structure 53 shown in fig. 1 and 5 includes a second fixing bolt 531, a second mounting position 532 and a fourth locking bolt 533. The second mounting position 532 is disposed on the top of the second fixing bolt 531, and the two are integrally connected. The second mounting position 532 is a U-shaped structure, the second mounting position 532 is in threaded connection with a fourth locking bolt 533, and when the device is used, the fourth locking bolt 533 pushes the moving rod 52 against the inner wall of the second mounting position 532, and the relative position of the limiting structure 53 and the moving rod 52 is locked by applying friction.
The using method of the invention comprises the following steps:
1. implanting the first fixing bolt 21 and the second fixing bolt 531 into the spine of the infant patient;
2. mounting the locking structure 3 at a proper position of the inner fixing rod 1;
3. sequentially sleeving the elastic structure 4 and the connecting structure 51 on the inner fixed rod 1;
4. locking the position relation of the inner fixing rod 1 and the connecting structure 51;
5. locking the positional relationship of the moving bar 52 and the connecting structure 51;
6. mounting the inner fixing rod 1 to the inside of the first mounting position 22; mounting the moving bar 52 inside the second mounting location 532;
7. the locking between the inner fixing rod 1 and the connecting structure 51 is released;
8. the elasticity of the elastic structure 4 is detected for a long time, the second operation is performed in time, and the elastic structure is converted into a common growth rod to continuously support the spine of the patient.
Alternatively, if the patient still needs to be treated with the in vivo self-expanding convertible growth-friendly spinal orthosis system after the elastic force of the elastic construct 4 fails, the elastic construct 4 may be compressed again, and if this happens, the adjustment may be made according to the following steps:
1. the standby bolt 6 is arranged in the opening structure and screwed down, and the opening structure is fixed on the side wall of the inner fixing rod 1 by applying friction force;
2. loosening the second locking bolt 33 to enable the locking bracket 31 to move on the inner fixing rod 1;
3. pushing the locking bracket 31 towards the direction of the opening structure to compress the elastic structure 4;
4. after the elastic structure 4 is compressed to a proper length, the second locking bolt 33 is assembled into the locking bracket 31 and screwed tightly, and the position of the locking structure 3 is locked;
5. and (6) detaching the spare bolt 6 to finish the adjustment operation.
The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.
Claims (10)
1. An in vivo self-distracting transformable growth-friendly spinal orthopedic system, comprising:
an inner fixing rod;
the fixing structure comprises: the inner fixing rod is separated from the inner fixing rod and is fixed on the side wall of the inner fixing rod by applying friction force;
locking structure: the inner fixing rod is separated from the inner fixing rod and is fixed on the side wall of the inner fixing rod by applying friction force;
the opening structure: sliding on the outer side wall of the inner fixing rod along a predetermined track;
the elastic structure is as follows: the locking structure is sleeved on the outer side wall of the inner fixing rod and is positioned in the direction of the locking structure far away from the fixing structure; one end of the elastic structure is propped against the side wall of the locking structure, and the other end of the elastic structure is propped against the side wall of the opening structure; driving the expanding structure to move away from the locking structure;
spare bolt, with strutting structure threaded connection, will when needing spare bolt packs into and struts the structure, uses frictional force to strut the structure and fix on the lateral wall of interior fixed rod.
2. The in vivo self-distracting convertible growth-friendly spinal orthopedic system of claim 1, wherein the fixation structure comprises a first fixation bolt, a first mounting location, and a first locking bolt; the first mounting position is arranged at the top of the first fixing bolt; the first locking bolt locks the inner fixing rod on the side wall of the first installation position.
3. The in vivo self-distracting convertible growth-friendly spinal orthopedic system of claim 2, wherein there are two or more sets of said fixation structures, the fixation structures being disposed in a direction in which the locking structure is distal from the resilient structure.
4. The in vivo self-distracting convertible growth-friendly spinal orthopedic system of claim 1, wherein the locking structure comprises a locking bracket and a second locking bolt; a first through hole matched with the inner fixing rod is formed in the side wall of the locking support; and a first threaded hole matched with the second locking bolt is formed in the top of the locking support.
5. The in vivo self-distracting convertible growth-friendly spinal orthopedic system of claim 4, wherein a side wall of the first through hole is continuous with a bottom of the first threaded hole; the second locking bolt locks the inner fixing rod on the side wall of the first through hole.
6. The in vivo self-distracting convertible growth-friendly spinal orthopedic system of any one of claims 1-5 wherein the distracting structure includes a connecting structure, a travel bar, and a stop structure; the limiting structure is separated from the moving rod and is fixed on the side wall of the moving rod by applying friction force; one end of the connecting structure is connected with the inner fixing rod in a sliding mode, and the other end of the connecting structure is separated from the moving rod and fixed on the side wall of the moving rod by friction force.
7. The in vivo self-distracting convertible growth-friendly spinal orthopedic system of claim 6, wherein the connecting structure includes a connecting bracket and a third locking bolt; a second through hole and a third through hole are formed in the side wall of the connecting support; a second threaded hole and a third threaded hole are formed in the top of the connecting support; the side wall of the second through hole is communicated with the bottom of the second threaded hole; and the side wall of the third through hole is communicated with the bottom of the third threaded hole.
8. The in vivo self-distracting convertible growth-friendly spinal orthopedic system of claim 7, wherein the second through hole is adapted with an internal fixation rod; the third through hole is matched with the movable upper; the third threaded holes are matched with third locking bolts; the second threaded hole is matched with the spare bolt.
9. The in vivo self-distracting convertible growth-friendly spinal orthopedic system of claim 6, wherein the restraining structure comprises a second securing bolt, a second mounting location, and a fourth locking bolt; the second mounting position is arranged at the top of the second fixing bolt; the fourth locking bolt locks the movable upper on the side wall of the second installation position.
10. The in vivo self-distracting convertible growth friendly spinal orthopedic system of claim 7 wherein there are two or more sets of said limiting structures, each of the limiting structures being disposed on a single side wall of the movable rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211700365.6A CN115670622A (en) | 2022-12-29 | 2022-12-29 | In vivo self-distracting convertible growth-friendly spinal orthopedic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211700365.6A CN115670622A (en) | 2022-12-29 | 2022-12-29 | In vivo self-distracting convertible growth-friendly spinal orthopedic system |
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| CN115670622A true CN115670622A (en) | 2023-02-03 |
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| CN202211700365.6A Pending CN115670622A (en) | 2022-12-29 | 2022-12-29 | In vivo self-distracting convertible growth-friendly spinal orthopedic system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| CN216724704U (en) * | 2021-12-27 | 2022-06-14 | 上海浦卫医疗器械厂有限公司 | Micro-movable dynamic spinal column orthopedic connecting rod |
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2022
- 2022-12-29 CN CN202211700365.6A patent/CN115670622A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102949230A (en) * | 2011-08-23 | 2013-03-06 | 常州市康辉医疗器械有限公司 | Power-driven automatic stretching correcting system and application thereof |
| US20160106471A1 (en) * | 2014-10-15 | 2016-04-21 | Globus Medical, Inc. | Orthopedic Extendable Rods |
| CN108635032A (en) * | 2018-05-23 | 2018-10-12 | 中国医学科学院北京协和医院 | A kind of internal automatically-controlled elastic struts spinal growth bar system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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