CN209347190U - A kind of noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic - Google Patents
A kind of noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic Download PDFInfo
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- CN209347190U CN209347190U CN201821297534.5U CN201821297534U CN209347190U CN 209347190 U CN209347190 U CN 209347190U CN 201821297534 U CN201821297534 U CN 201821297534U CN 209347190 U CN209347190 U CN 209347190U
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- permanent magnet
- electromagnetic drive
- backbone
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Abstract
The utility model relates to a kind of noninvasive growing rods of contactless electromagnetic drive for scoliosis orthopedic, including being connected between the top vertebra of backbone and tail bone internal electromagnetic drive Yan Suo mechanism, the mechanism can be controlled to stretch out to extend or retract under the driving of electromagnetic field in vitro and be shortened, to realize the concave side support or the pressurization of convex side of backbone, and then the mobilism for completing scoliosis is orthopedic.Compared with conventional growth stick technology, 1. the utility model, which has the advantage that, can allow patient to carry out backbone correcting in the case where not receiving invasive surgical operation, reduce operation wound, the incidence of other complication of repeated multiple times operation bring infection and respiratory tract infection and anesthetic risks etc. is decreased, the financial burden of patient is reduced；2. can repeatedly strut in a small amount, a more traditional sexual violence is strutted, and can be reduced because backbone is stiff, ligament, spinal injury etc. caused by spontaneous fusion；3. can complete to strut under patient awoke's state, it is not necessarily to Nerve Testing, the safety is improved.
Description
Technical field
The utility model relates to a kind of medical instruments, specifically about a kind of contactless electricity for scoliosis orthopedic
The noninvasive growing rod of Magnetic driving.
Background technique
Children's scoliosis is a kind of abnormalities disease of orthopaedics for seriously affecting upgrowth and development of children, the influence for infant
The problem of being not only shape, when deformity is serious, lateral bending can also have a huge impact cardiopulmonary development.When children's backbone side
Curved unsuitable non-operative treatment or non-operative treatment are considered as carrying out operative treatment when lateral bending cannot be prevented to aggravate.Modern backbone
The treatment of scoliosis is expanded to three-dimensional space, i.e. Coronal, the three-dimensional knot of sagittal plain and horizontal position by the development of surgery
The treatment of structure.But this in terms of the treatment of children's scoliosis still not enough, children are there are also four-dimensional space, i.e. children
Growth and development.This requires children spinal surgery doctors, when treating children's scoliosis, in addition to from three-dimensional structure
Except aspect correction or control deformity, also to fully take into account treatment cannot influence or influence as small as possible the growth hair of children
It educates, i.e., not only need to obtain malformation correction and maintains orthopedic effect, but also need the growth ability of preservation spinal to greatest extent.
For the Harrington doctor in the U.S. in the growing rod technology of introduction in 1962, this method is growing rod skill in the future
The perfect of art provides the foundation and valuable experience.Moe doctor then improves it, for treating progressive exacerbation
Children's scoliosis, and it is referred to as " subcutaneous stick (subcutaneous rods) ", and studied and assist in scoliosis in 1978
It can report.
As shown in Figure 1, the concept of growing rod is to be placed in a support system in backbone two sides, this support system can be rectified
Positive scoliosis, and there is the ability persistently corrected.Growing rod is exactly to require with child why it is referred to as " growing rod "
Natural growth and development, put into intracorporal growing rod structure, periodically strutted, to reach consistency between the two.This
Kind periodically struts requirement can only remake a minor operation at present, i.e., do within doctor every 6 months or so for infant and once strut extension hand
Reserved extension site is strutted extension by strutting to extend to perform the operation by art.But the resulting problem of operation plan frequent in this way
It is infection rate height, scar is serious, and frequently operation can promote the spontaneous fusion of Via Posterior Spinal Approach and the spontaneous fusion of costovertebral joint, increases
The stiffness index of scoliosis, postoperative mid-term are likely to occur the problem of can not extending；Meanwhile operation all allows parent to subject every time
Very big psychology and financial burden, also causes huge burden to the psychology of infant, physiology.
Utility model content
In view of the above problems, the object of the present invention is to provide a kind of contactless electromagnetism for scoliosis orthopedic
Drive noninvasive growing rod.
To achieve the above object, the utility model takes following technical scheme: a kind of to connect for the non-of scoliosis orthopedic
The noninvasive growing rod of touch electromagnetic drive, which is characterized in that including being connected to internal electromagnetic drive between the top vertebra of backbone and tail bone
Yan Suo mechanism (1), the internal electromagnetic drive Yan Suo mechanism (1) can control in vitro stretched out under the driving of electromagnetic field extend or
Retraction shortens, and to realize the concave side support or the pressurization of convex side of backbone, and then the mobilism for completing scoliosis is orthopedic.
In a preferred embodiment, the internal electromagnetic drive Yan Suo mechanism (1) includes: permanent magnet (11), described
Permanent magnet (11) can control in vitro to be realized under the driving of electromagnetic field and rotates forward or backwards；Linear lead screw (12), described in one
Linear lead screw (12) is connected to one end of the permanent magnet (11) and with the permanent magnet (11) synchronous rotary；Moving body (13),
One moving body (13) is threaded on the linear lead screw (12), and the moving body (13) can be in the linear lead screw
(12) it stretches out to extend or retract to one end under driving and shorten；Outer sleeve (14) is wrapped in the permanent magnet (11) outside, described
The first end of outer sleeve (14) is flexibly connected with the moving body (13), second end closing；First pitman (15), proximal end connect
It connects on the moving body (13), distal end connects the top vertebra or tail bone of backbone；Second pitman (16), proximal end are connected to described
The second end of outer sleeve (14), distal end connect the tail bone or top vertebra of backbone.
In a preferred embodiment, the internal electromagnetic drive Yan Suo mechanism (1) includes: permanent magnet (11), described
Permanent magnet (11) can control in vitro to be realized under the driving of electromagnetic field and rotates forward or backwards；Linear lead screw (12), described in two
Linear lead screw (12) is connected to the both ends of the permanent magnet (11) and with the permanent magnet (11) synchronous rotary；Moving body
(13), two moving bodys (13) are threaded in respectively on the two linear lead screws (12), and the moving body (13) can be in institute
It states to stretch out to extend or retract to both ends under the driving of linear lead screw (12) and shorten；Outer sleeve (14), is wrapped in the permanent magnet
(11) external, the both ends of the outer sleeve (14) are flexibly connected with two moving bodys (13) respectively；Pitman (15), described in two
The proximal end of pitman (15) is connected on two moving bodys (13), is distally respectively used to the top vertebra and tail of connection backbone
Vertebra.
In a preferred embodiment, reduction gearbox is set between the permanent magnet (11) and linear lead screw (12)
(17), the input terminal of the reduction gearbox (17) connects the permanent magnet (11), described in the output end connection of the reduction gearbox (17)
Linear lead screw (12).
In a preferred embodiment, the permanent magnet (11) uses cylindrical structure, is radially magnetized, material
Using neodymium-iron-boron magnetic material.
In a preferred embodiment, the junction of the outer sleeve (14) and moving body (13) is provided with sealing ring
(18)。
In a preferred embodiment, first pitman (15) and the second pitman (16) be diameter 5.5mm or
The stud of 6.0mm.
In a preferred embodiment, the pitman (15) is the stud of diameter 5.5mm or 6.0mm.
Compared with conventional growth stick technology, the noninvasive growing rod of contactless electromagnetic drive of the utility model has following excellent
Gesture: 1. the internal electromagnetic drive Yan Suo mechanism of the utility model can stretch out under the driving in controllable electric magnetic field in vitro extends or contracting
It returns and shortens, to realize the concave side support or the pressurization of convex side of backbone, and then the mobilism for completing scoliosis is orthopedic, and patient can be
Do not receive to carry out backbone correcting in the case where invasive surgical operation, avoids conventional growth stick technology every 6 months and need to carry out
Once strut extension operation, reduce operation wound, decrease repeated multiple times operation bring infect and respiratory tract infection and
The incidence of other complication such as anesthetic risks reduces the financial burden of patient；2. the utility model can be strutted repeatedly in a small amount,
A more traditional sexual violence struts, and can be reduced because backbone is stiff, ligament, spinal injury etc. caused by spontaneous fusion；3. this
Utility model can be completed to strut under patient awoke's state, be not necessarily to Nerve Testing, the safety is improved.
Detailed description of the invention
Fig. 1 is the usage state diagram of conventional growth stick；
Fig. 2 is the structural schematic diagram of the unidirectional internal electromagnetic drive Yan Suo mechanism of the utility model；
Fig. 3 is the structural schematic diagram of the two-way internal electromagnetic drive Yan Suo mechanism of the utility model；
Fig. 4 is the state diagram after electromagnetic drive Yan Suo mechanism implants in the utility model body；
Fig. 5 is the driving principle figure that the utility model controls electromagnetic field in vitro.
Specific embodiment
The utility model is described in detail below with reference to embodiment.
Fig. 2, Fig. 4 are illustrated according to the contactless noninvasive growing rod of electromagnetic drive provided by the utility model, including internal
Electromagnetic drive Yan Suo mechanism 1, for being connected between the top vertebra of backbone and tail bone, which can
It controls to stretch out to extend or retract under the driving of electromagnetic field in vitro and shorten, to realize the concave side support or the pressurization of convex side of backbone, into
And the mobilism for completing scoliosis is orthopedic.
In a preferred embodiment, as shown in Fig. 2, electromagnetic drive Yan Suo mechanism 1 is unidirectionally to extend or retract in vivo,
That is internal electromagnetic drive Yan Suo mechanism 1 includes: permanent magnet 11, and permanent magnet 11 can control in vitro to be realized under the driving of electromagnetic field
It rotates forward or backwards；Linear lead screw 12, a linear lead screw 12 are connected to one end of permanent magnet 11 and revolve with permanent magnet 11 is synchronous
Turn；Moving body 13, a moving body 13 are threaded on linear lead screw 12, moving body 13 can under the driving of online sex pilus thick stick 12 to
One end, which is stretched out to extend or retract, to shorten；Outer sleeve 14 is wrapped in outside permanent magnet 11, the first end and moving body 13 of outer sleeve 14
It is flexibly connected, second end closing；First pitman 15, proximal end are connected on moving body 13, are distally connected by pedicle screw
Connect the top vertebra or tail bone of backbone；Second pitman 16, proximal end are connected to the second end of outer sleeve 14, distally pass through pedicle of vertebral arch screw
The tail bone or top vertebra of nail connection backbone.
In another preferred embodiment, as shown in figure 3, electromagnetic drive Yan Suo mechanism 1 is Bidirectional extension or contracting in vivo
It returns, i.e., internal electromagnetic drive Yan Suo mechanism 1 includes: permanent magnet 11, and permanent magnet 11 can be controlled in vitro under the driving of electromagnetic field
Realization rotates forward or backwards；Linear lead screw 12, two linear lead screws 12 are connected to the both ends of permanent magnet 11 and with permanent magnet
11 synchronous rotaries；Moving body 13, two moving bodys 13 are threaded in respectively on two linear lead screws 12, the online sex pilus thick stick of moving body 13
It stretches out to extend or retract to both ends under 12 driving and shorten；Outer sleeve 14 is wrapped in outside permanent magnet 11, the both ends of outer sleeve 14
It is flexibly connected respectively with two moving bodys 13；Pitman 15, the proximal end of two pitmans 15 are connected on two moving bodys 13, distal end
It is respectively used to the top vertebra and tail bone of connection backbone.
In a preferred embodiment, also reduction gearbox 17 can be set between permanent magnet 11 and linear lead screw 12, this subtracts
The input terminal of fast case 17 connects permanent magnet 11, the output end connecting line sex pilus thick stick 12 of reduction gearbox 17.Meanwhile the deceleration of reduction gearbox 17
Than so that linear lead screw 12 drives the every mobile 1mm of moving body 13 to need 5min or more the time, designing reduction gearbox 17 in 1:60 or more
Main purpose be to obtain big output torque and lower revolving speed, such driving speed and extend the time for backbone correcting
Be it is safe, slowly it is orthopedic patient's spinal cord will not be caused acutely to pull, even result in paraplegia so as to cause spinal cord injury.
In a preferred embodiment, permanent magnet 11 uses cylindrical structure, is radially magnetized, and material uses neodymium
Fe-Mn magnetism material.
In a preferred embodiment, the junction of outer sleeve 14 and moving body 13 is provided with sealing ring 18, to prevent
Only body fluid penetrates into.
In a preferred embodiment, the stud in nail-stick system that pitman uses for current field of spinal surgery,
Stud diameter is 5.5mm or 6.0mm.
As shown in Figure 4, Figure 5, when the utility model is used, passing through top vertebra and the pedicle of vertebral arch screw of tail bone centrum implantation first
The distal end of two pitmans is separately fixed on the top vertebra and tail bone of backbone by nail.When needing electromagnetic drive in extension body to prolong contracting machine 1
When, start external control electromagnetic field simultaneously close to patient's the small of the back backbone skin, control electromagnetic field generates the friendship rotated in vitro at this time
Varying magnetic field is extremely constantly alternately converted by the pole N of alternating magnetic field itself and S, the permanent magnet 11 of patient's body is driven to rotate in the forward direction,
Permanent magnet 11 rotates with linear lead screw 12 and moving body 13 is pushed to radially slide, and outer sleeve 14 is then fixed, to make
Moving body 13 is mobile relative to outer sleeve 14 and extends from, and increases the distance between both ends pitman, to carry out scoliosis
Concave side support；Opposite, when needing to shorten internal electromagnetic drive Yan Suo mechanism 1, driven at this time by control electromagnetic field in vitro
Dynamic permanent magnet 11 reversely rotates, to keep moving body 13 mobile relative to outer sleeve 14 and retract, shortens between the pitman of both ends
Distance, with carry out scoliosis convex side pressurization.
The various embodiments described above are only used for carrying out exemplary retouch to the purpose of this utility model, technical scheme and beneficial effects
It states, it is not limited to above-mentioned specific embodiment, within the spirit and principle of the utility model, any modification for being made,
Equivalent replacement, improvement etc., should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic, which is characterized in that including being connected to
Internal electromagnetic drive Yan Suo mechanism (1) between the top vertebra and tail bone of backbone, the internal electromagnetic drive Yan Suo mechanism (1) can be
It stretches out to extend or retract under the driving of external control electromagnetic field and shorten, to realize the concave side support or the pressurization of convex side of backbone, in turn
The mobilism for completing scoliosis is orthopedic.
2. the noninvasive growing rod of contactless electromagnetic drive according to claim 1, which is characterized in that the internal electromagnetism drives
Dong Yansuo mechanism (1) includes:
Permanent magnet (11), the permanent magnet (11) can control in vitro to be realized under the driving of electromagnetic field and rotates forward or backwards；
Linear lead screw (12), a linear lead screw (12) are connected to one end of the permanent magnet (11) and with the permanent magnet
(11) synchronous rotary；
Moving body (13), a moving body (13) are threaded on the linear lead screw (12), and the moving body (13) can
It stretches out to extend or retract to one end under the driving of the linear lead screw (12) and shorten；
Outer sleeve (14) is wrapped in the permanent magnet (11) outside, the first end of the outer sleeve (14) and the moving body
(13) it is flexibly connected, second end closing；
First pitman (15), proximal end are connected on the moving body (13), and distal end connects the top vertebra or tail bone of backbone；
Second pitman (16), proximal end are connected to the second end of the outer sleeve (14), and distal end connects tail bone or the top of backbone
Vertebra.
3. the noninvasive growing rod of contactless electromagnetic drive according to claim 1, which is characterized in that the internal electromagnetism drives
Dong Yansuo mechanism (1) includes:
Permanent magnet (11), the permanent magnet (11) can control in vitro to be realized under the driving of electromagnetic field and rotates forward or backwards；
Linear lead screw (12), the two linear lead screws (12) are connected to the both ends of the permanent magnet (11) and with the permanent magnetism
Body (11) synchronous rotary；
Moving body (13), two moving bodys (13) are threaded in respectively on the two linear lead screws (12), the moving body
(13) it can stretch out to extend or retract to both ends under the driving of the linear lead screw (12) and shorten；
Outer sleeve (14), it is external to be wrapped in the permanent magnet (11), the both ends of the outer sleeve (14) respectively with two movements
Body (13) is flexibly connected；
Pitman (15), the proximal end of two pitmans (15) are connected on two moving bodys (13), and distal end is used respectively
In the top vertebra and tail bone of connection backbone.
4. the noninvasive growing rod of contactless electromagnetic drive according to claim 2 or 3, which is characterized in that in the permanent magnetism
Reduction gearbox (17) are set between body (11) and linear lead screw (12), the input terminal of the reduction gearbox (17) connects the permanent magnet
(11), the output end of the reduction gearbox (17) connects the linear lead screw (12).
5. the noninvasive growing rod of contactless electromagnetic drive according to claim 2 or 3, which is characterized in that the permanent magnet
(11) cylindrical structure is used, is radially magnetized, material uses neodymium-iron-boron magnetic material.
6. the noninvasive growing rod of contactless electromagnetic drive according to claim 2 or 3, which is characterized in that in the housing
The junction of cylinder (14) and moving body (13) is provided with sealing ring (18).
7. the noninvasive growing rod of contactless electromagnetic drive according to claim 2, which is characterized in that first pitman
(15) and the second pitman (16) be diameter 5.5mm or 6.0mm stud.
8. the noninvasive growing rod of contactless electromagnetic drive according to claim 3, which is characterized in that the pitman (15)
For the stud of diameter 5.5mm or 6.0mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821297534.5U CN209347190U (en) | 2018-08-13 | 2018-08-13 | A kind of noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic |
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| CN201821297534.5U CN209347190U (en) | 2018-08-13 | 2018-08-13 | A kind of noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108703798A (en) * | 2018-08-13 | 2018-10-26 | 北京大学人民医院 | The noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108703798A (en) * | 2018-08-13 | 2018-10-26 | 北京大学人民医院 | The noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic |
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