CN108904026A - It can be used for the electromagnetic drive intramedullary needle of bone carrying - Google Patents
It can be used for the electromagnetic drive intramedullary needle of bone carrying Download PDFInfo
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- CN108904026A CN108904026A CN201810919123.3A CN201810919123A CN108904026A CN 108904026 A CN108904026 A CN 108904026A CN 201810919123 A CN201810919123 A CN 201810919123A CN 108904026 A CN108904026 A CN 108904026A
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- bone
- electromagnetically driven
- permanent magnet
- outer sleeve
- screw
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
本发明涉及一种可用于骨搬运的电磁驱动髓内针，其特征在于，包括连接在自体骨端和截骨端之间的体内电磁驱动牵引机构，所述体内电磁驱动牵引机构能够在体外控制电磁场的驱动下带动搬运骨段向远离所述截骨端的方向移动。本发明利用体外交变电磁场通过非接触方式驱动体内髓内针内的永磁体转动，进而驱动髓内针内的丝杠旋转，丝杠旋转带动与搬运骨段连接的牵引块向远离截骨端的方向移动，使搬运骨段逐渐移动经过缺损段，最终与骨缺损端接触并通过加压实现骨愈合，待骨性愈合后将髓内针拆除即可完成骨搬运，从而实现无创、匀速牵拉截骨处骨膜，诱导骨膜成骨，实现骨骼缺损重建。
The invention relates to an electromagnetically driven intramedullary nail that can be used for bone transport, which is characterized in that it includes an internal electromagnetically driven traction mechanism connected between the end of the autogenous bone and the osteotomized end, and the internal electromagnetically driven traction mechanism can be controlled outside the body. Driven by the electromagnetic field, the transported bone segment is driven to move away from the osteotomy end. The invention utilizes the external alternating electromagnetic field to drive the permanent magnet in the intramedullary needle to rotate in a non-contact manner, and then drives the screw in the intramedullary needle to rotate, and the rotation of the screw drives the traction block connected with the bone segment to move away from the osteotomy end. Move in the same direction, so that the transported bone segment gradually moves through the defect segment, and finally contacts with the bone defect end and achieves bone healing through pressure. The periosteum at the osteotomy is induced to induce periosteal osteogenesis to achieve bone defect reconstruction.
Description
Technical field
The present invention relates to a kind of medical instruments, specifically about a kind of electromagnetic drive intramedullary needle that can be used for bone carrying.
Background technique
Clinical wound, infection, tumour etc. can lead to long bone of limbs large segmental bone defect, for the big section at adjacent joints position
Bone defect generally uses metal prostheses to rebuild or allosome bone remoulding, but for (long bone middle section position) defect at backbone, always with
Not generally acknowledge optimal method for reconstructing.Currently, common method includes allogenic bone transplantation, autologous bone transplanting, the vacation of middle section metal
Body etc., but these methods have higher failure rate.For four limbs middle section bone defect, bone, which is carried, can achieve biology reconstruction
Effect, and long term complication is less.Traditional bone method for carrying is that external fixing rack drawing carries section, stretches periosteum and then induces bone
Film skeletonization, the final Bone Defect Repari for realizing defect section, the type of external fixing rack include annular intramedullary needle and monolateral external frisket.It is outer solid
Determining frame is section to be carried using several pieces of metal fixed pins are fixed, after osteotomy by external metal or carbon attachment device
Begin through within 5-7 days it is slowly mobile with the steel needle for carrying section bone fixation in vivo, by periosteum at drawing osteotomy, induction periosteum at
Bone is graduallyd mature to periosteum skeletonization, is formed pulp cavity structure and is realized that blood fortune is established, then outrigger and metal fixed pin are removed.
Since the treatment time that bone is carried is longer, according to defect length difference, patient generally requires to wear the outrigger several months extremely
1-2 etc..External fixing rack carries out bone and carries existing matter of utmost importance to be pin track infection, and document report infection rate is 30-
47% differs, and receives to may occur in which soft tissue contracture, the complication such as fibrosis and greendstick fracture during outrigger treatment.Clinically,
In order to reduce the incidence of complication rate, especially pin track infection, outrigger generally can be shortened by Complex fixation
Using the time, and then reduce infection probability.Common Complex fixation have the compound intramedullary needle of outrigger or outrigger clad steel plate into
Row bone is carried, i.e., handling process is carried out by outrigger, but after carrying section movement, is consolidated by intramedullary needle or steel plate
It is fixed, so as to remove outrigger, outrigger can be shortened in this way and use the time.But it is still inevitable using outer in handling process
Frame, to occur due to infection caused by outrigger use, tendon interference etc..And for Complex fixation, once go out
Even more serious consequence will be occurred by now infecting, and because still having metal inside-fixture in vivo, can not only be treated by debridement, need by
In-vivo metal inside-fixture complete resection.Secondly, the metal fixed pin of traditional external fixing rack is needed across the soft tissues knot such as muscle
Structure, these metal fixed pins often will affect contraction of muscle and then cause joint motion limited, and patient during outrigger extension
It is unable to walking with load, patient comfort is lower during wearing outrigger, in addition to walking with load function limitation, controls using external fixing rack
Outrigger will affect patient since size is larger and wear the clothes during treatment, and especially in north cold area, winter needs thicker clothing
When, this disadvantage of outrigger is more obvious.
Relative to external fixing rack Limb lengthening, screw way sense in therapeutic process can be reduced using Internal fixation technology, such as intramedullary needle
The risks such as dye, fracture, but traditional intramedullary needle cannot achieve bone carrying.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of electromagnetic drive intramedullary needles that can be used for bone carrying.
To achieve the above object, the present invention takes following technical scheme：It is a kind of to can be used in the electromagnetic drive marrow that bone is carried
Needle, which is characterized in that including the internal electromagnetic drive traction mechanism (1) being connected between self epiphysis and osteotomy end, the body
Interior electromagnetic drive traction mechanism (1) can control to drive under the driving of electromagnetic field in vitro carries bone section to far from the osteotomy end
Direction it is mobile.
In a preferred embodiment, the internal electromagnetic drive traction mechanism (1) includes：Outer sleeve (11), connection
Between the self epiphysis and osteotomy end, a sliding slot (15) are opened up along axial direction on the outer sleeve (11)；Permanent magnet (12), if
It sets in the outer sleeve (11), the permanent magnet (12) can control in vitro to be rotated under the driving of electromagnetic field；Linearly
Lead screw (13) is rotatably supported in the outer sleeve (11) along the axial direction of the outer sleeve (11), the linear lead screw (13)
One end connect with the permanent magnet (12) and can be with the permanent magnet (12) synchronous rotary；Guiding piece (14), is slidably arranged in institute
It states in outer sleeve (11) and threaded engagement is on the linear lead screw (13), and is solid through the sliding slot (15) and the carrying bone section
Fixed, the guiding piece (14) can drive the carrying bone section to far from the osteotomy end under the driving of the linear lead screw (13)
Direction it is mobile.
In a preferred embodiment, reduction gearbox (16) are set between the permanent magnet (12) and linear lead screw (13),
The input terminal of the reduction gearbox (16) connects the permanent magnet (12), and the output end of the reduction gearbox (16) connects the linear silk
Thick stick (13).
In a preferred embodiment, several screw holes are offered on the guiding piece (14), the carrying bone section is logical
It crosses several mono cortex screws (17) and passes through the sliding slot (15) and connect afterwards with the screw hole on the guiding piece (14).
In a preferred embodiment, the permanent magnet (12) uses cylindrical structure, is radially magnetized, material
Using neodymium-iron-boron magnetic material.
In a preferred embodiment, the screw pitch of the linear lead screw (13) is designed as 1mm.
The invention adopts the above technical scheme, which has the following advantages：The present invention is logical using external alternating electromagnetic field
The permanent magnet rotating in cordless driving body in intramedullary needle is crossed, and then drives the lead screw rotation in intramedullary needle, lead screw rotation
It drives the guiding piece connecting with carrying bone section mobile to the direction far from osteotomy end, carrying bone section is made gradually to move through defect
Section finally realizes knitting with bone defect end in contact and by pressurization, and bone can be completed in intramedullary needle dismounting after bony union
Carry, thus realize it is noninvasive, at the uniform velocity pull osteotomy at periosteum, induce periosteum skeletonization, realize bone defects rebuild.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the partial enlargement diagram of outer sleeve of the present invention；
Fig. 3 is the driving principle figure of external control electromagnetic field of the invention.
Specific embodiment
The present invention is described in detail below with reference to embodiment.
Fig. 1 illustrates the electromagnetic drive intramedullary needle provided according to the present invention, including internal electromagnetic drive traction mechanism 1, uses
In being connected between self epiphysis 10 and osteotomy end 20, which can control electromagnetic field in vitro
Driving under drive that carry bone section 30 mobile to the direction far from osteotomy end 20, make to carry bone section 30 and gradually move through defect
Section finally contacts with self epiphysis 10 and realizes knitting by pressurization, to realize the periosteum distraction osteogenesis of defect section.
In a preferred embodiment, internal electromagnetic drive traction mechanism 1 includes：Outer sleeve 11 (shell), is connected to
Between self epiphysis 10 and osteotomy end 20, a sliding slot 15 (as shown in Figure 2) is opened up along axial direction on outer sleeve 11；Permanent magnet 12, if
It sets in outer sleeve 11, which can control in vitro is rotated under the driving of electromagnetic field；Linear lead screw 13, along outer
The axial direction of sleeve 11 is rotatably supported in outer sleeve 11, and one end of linear lead screw 13 connect with permanent magnet 12 and can be with permanent magnet 12
Synchronous rotary；Guiding piece 14, is slidably arranged in outer sleeve 11 and on the online sex pilus thick stick 13 of threaded engagement, and through sliding slot 15 with remove
It transports bone section 30 to fix, which can drive carrying bone section 30 to the side far from osteotomy end 20 under the driving of online sex pilus thick stick 13
To movement, sliding slot 15 is used to constrain the moving direction of guiding piece 14.
In a preferred embodiment, also reduction gearbox 16 can be set between permanent magnet 12 and linear lead screw 13, this subtracts
The input terminal of fast case 16 connects permanent magnet 12, the output end connecting line sex pilus thick stick 13 of reduction gearbox 16, and reduction gearbox 16 designs main
Purpose is to obtain biggish output torque and lower revolving speed.
In a preferred embodiment, several screw holes are offered on guiding piece 14, are carried bone section 30 and are passed through several lists
Cortex screw 17 is simultaneously connect after sliding slot 15 with the screw hole on guiding piece 14.
In a preferred embodiment, permanent magnet 12 uses cylindrical structure, is radially magnetized, and material uses neodymium
Fe-Mn magnetism material.
In a preferred embodiment, 11 outer diameter of outer sleeve is the different thicknesses size of 8-13mm, to meet different solutions
Cut open the patient of size bone.
In a preferred embodiment, the screw pitch of linear lead screw 13 is designed as 1mm.
As shown in Figure 1, Figure 3, in the use of the present invention, routinely intramedullary needle mounting means, passes through defect section one end first
Long ossis then passes through defect section, enters defect section other end ossis later；When intramedullary needle enters appropriate length (length
Spend is to carry bone section length) after, it carries out retaining periosteum osteotomy under C arm perspective, continues into intramedullary needle distally after osteotomy
Pulp cavity, and respectively at close, distal end installation pinning 40, intramedullary needle is fixed on to close, the distal tubular bone of defect section, then passes through body
Outer locator mono cortex screw 17 is fixed on bone section 30 is carried on guiding piece 14.When needing to carry out bone carrying, start body
Outer control electromagnetic field and close limbs of patient skin, the alternating magnetic field of control electromagnetic field generation rotation in vitro, passes through alternation at this time
The pole N in magnetic field itself and S are extremely constantly alternately converted, and drive the permanent magnet 12 of patient's body to rotate, permanent magnet 12 is with linear silk
Thick stick 13 rotates and guiding piece 14 is pushed to slide axially along the sliding slot 15 of outer sleeve 11, so that driving guiding piece 14 carries bone section 30
To far from the movement of 20 direction of osteotomy end, the sutura at osteotomy is gradually pulled open by the mobile 1mm of promotion expense guiding piece 14 daily in this way
Gap makes carrying bone section 30 gradually move through defect section, realizes the periosteum distraction osteogenesis of defect section.
The various embodiments described above are only used for carrying out exemplary description to the purpose of the present invention, technical scheme and beneficial effects, and
Be not limited to above-mentioned specific embodiment, all within the spirits and principles of the present invention, any modification for being made, equivalent replacement,
Improve etc., it should all be included in the protection scope of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810919123.3A CN108904026A (en) | 2018-08-13 | 2018-08-13 | It can be used for the electromagnetic drive intramedullary needle of bone carrying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810919123.3A CN108904026A (en) | 2018-08-13 | 2018-08-13 | It can be used for the electromagnetic drive intramedullary needle of bone carrying |
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| CN108904026A true CN108904026A (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810919123.3A Pending CN108904026A (en) | 2018-08-13 | 2018-08-13 | It can be used for the electromagnetic drive intramedullary needle of bone carrying |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297457A (en) * | 2020-03-30 | 2020-06-19 | 海城市正骨医院 | A relay type bone transfer device based on gear power and using method |
| CN111759431A (en) * | 2020-07-28 | 2020-10-13 | 姬涛 | Magnetic drive bone end retracting/pressurizing device |
| CN111973288A (en) * | 2020-08-28 | 2020-11-24 | 浙江科惠医疗器械股份有限公司 | Sufficient treatment device of diabetes |
| CN112263317A (en) * | 2020-11-16 | 2021-01-26 | 河南科科生物科技有限公司 | A new type of intramedullary nail for bone transfer |
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| US5429638A (en) * | 1993-02-12 | 1995-07-04 | The Cleveland Clinic Foundation | Bone transport and lengthening system |
| US5626579A (en) * | 1993-02-12 | 1997-05-06 | The Cleveland Clinic Foundation | Bone transport and lengthening system |
| CN101006948A (en) * | 2006-01-28 | 2007-08-01 | 李淳赫 | Limps extending device disposed inside medullar cavity |
| US20080108995A1 (en) * | 2006-11-06 | 2008-05-08 | Janet Conway | Internal bone transport |
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| US20130072932A1 (en) * | 2011-09-15 | 2013-03-21 | Wittenstein Ag | Intramedullary nail |
| US20140052134A1 (en) * | 2012-02-08 | 2014-02-20 | Bruce Orisek | Limb lengthening apparatus and methods |
| US20140114311A1 (en) * | 2012-10-18 | 2014-04-24 | Ellipse Technologies, Inc. | Intramedullary implants for replacing lost bone |
| CN209347191U (en) * | 2018-08-13 | 2019-09-06 | 北京大学人民医院 | A kind of electromagnetic drive intramedullary needle can be used for bone carrying |
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Patent Citations (10)
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| US5429638A (en) * | 1993-02-12 | 1995-07-04 | The Cleveland Clinic Foundation | Bone transport and lengthening system |
| US5626579A (en) * | 1993-02-12 | 1997-05-06 | The Cleveland Clinic Foundation | Bone transport and lengthening system |
| CN101006948A (en) * | 2006-01-28 | 2007-08-01 | 李淳赫 | Limps extending device disposed inside medullar cavity |
| EP2068724A2 (en) * | 2006-10-03 | 2009-06-17 | Arnaud Soubeiran | Intracorporeal elongation device with a permanent magnet |
| US20080108995A1 (en) * | 2006-11-06 | 2008-05-08 | Janet Conway | Internal bone transport |
| US20110060336A1 (en) * | 2009-09-04 | 2011-03-10 | Ellipse Technologies, Inc. | Bone growth device and method |
| US20130072932A1 (en) * | 2011-09-15 | 2013-03-21 | Wittenstein Ag | Intramedullary nail |
| US20140052134A1 (en) * | 2012-02-08 | 2014-02-20 | Bruce Orisek | Limb lengthening apparatus and methods |
| US20140114311A1 (en) * | 2012-10-18 | 2014-04-24 | Ellipse Technologies, Inc. | Intramedullary implants for replacing lost bone |
| CN209347191U (en) * | 2018-08-13 | 2019-09-06 | 北京大学人民医院 | A kind of electromagnetic drive intramedullary needle can be used for bone carrying |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297457A (en) * | 2020-03-30 | 2020-06-19 | 海城市正骨医院 | A relay type bone transfer device based on gear power and using method |
| CN111759431A (en) * | 2020-07-28 | 2020-10-13 | 姬涛 | Magnetic drive bone end retracting/pressurizing device |
| CN111973288A (en) * | 2020-08-28 | 2020-11-24 | 浙江科惠医疗器械股份有限公司 | Sufficient treatment device of diabetes |
| CN111973288B (en) * | 2020-08-28 | 2021-10-29 | 浙江科惠医疗器械股份有限公司 | A device for treating diabetic foot |
| WO2022041654A1 (en) * | 2020-08-28 | 2022-03-03 | 浙江科惠医疗器械股份有限公司 | Diabetic foot treatment device |
| CN112263317A (en) * | 2020-11-16 | 2021-01-26 | 河南科科生物科技有限公司 | A new type of intramedullary nail for bone transfer |
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Application publication date: 20181130 |
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