CN105686872B - A kind of bridge joint combination internal fixation system for Limb lengthening - Google Patents
A kind of bridge joint combination internal fixation system for Limb lengthening Download PDFInfo
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- CN105686872B CN105686872B CN201610135137.7A CN201610135137A CN105686872B CN 105686872 B CN105686872 B CN 105686872B CN 201610135137 A CN201610135137 A CN 201610135137A CN 105686872 B CN105686872 B CN 105686872B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6416—Devices extending alongside the bones to be positioned with non-continuous, e.g. hinged, pin-clamp connecting element
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6458—Devices extending alongside the bones to be positioned with pin-clamps fixed at ends of connecting element
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6491—Devices extending alongside the bones to be positioned allowing small-scale motion of bone ends
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/568—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor produced with shape and dimensions specific for an individual patient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B2017/681—Alignment, compression, or distraction mechanisms
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Abstract
The invention discloses a kind of bridge joints for Limb lengthening to combine internal fixation system, belong to the orthopaedics internal fixation system in the field of medical instrument technology, and a kind of length adjustment adjustable its purpose is to provide length is quickly and easily used for the bridge joint combination internal fixation system of Limb lengthening.Its technical solution are as follows: including fixed guide pole and link block, link block includes being fixedly connected with block and mobile link block, is fixedly connected with block and is fixedly connected on fixed guide pole, is fixedly connected with block and is fixedly connected in the first bone block by fastening screw；Mobile link block is slidably connected on fixed guide pole, and mobile link block is fixedly connected in the second bone block by fastening screw；Be fixedly connected on block and be connected with fixed link, drive seat is connected in mobile link block, be connected with drive rod in the drive seat, drive rod with fixed link connects and drives axial movement together with drive rod, fixed link and mobile link block along fixed guide pole.Bridge joint of the present invention suitable for Limb lengthening combines internal fixation system.
Description
Technical field
The invention belongs to the field of medical instrument technology, it is related in a kind of orthopaedics internal fixation system more particularly to Limb lengthening
Bridge joint combination internal fixation system.
Background technique
Limb lengthening, that is, distraction osteogenesis, exactly cuts sclerotin, retains soft tissue and blood supply, then use special traction device
Fixed both ends, gradually apply pulling force using tensile stress rule and slowly pull bone section, constantly stimulation body tissue, exciting human group
Regeneration potential is knitted, so that osteotomy gap is formed new bone, achievees the purpose that osteanagenesis.
There are many multiplicity for the instrument of lengthening, but principle is substantially the same.Fixation implant in domestic and international orthopaedics at present
Mostly with steel plate, intramedullary nail, straight type, compression type and dissection type bone fracture plate, various self-locking and interlocking type intramedullary nail, exterior fixing rack etc.
Based on series of products.
Application No. is 201120008165.5 utility model patents to disclose a kind of extensible Medullary fixation device,
The extensible Medullary fixation device includes intramedullary rod and the part of determining that can be fixed on intramedullary rod both ends in bone, and intramedullary rod includes set
Cylinder and inner core, inner core one end are slidably sheathed in the cavity of sleeve.Lap between sleeve and inner core should have long enough,
So that bone is unlikely to fall inner core out of sleeve after being fully grown-up to be advisable, in order to avoid the angulation deformity for causing bone new.It will set
Cartridge type telescopic device is introduced into intramedullary rod fixation, and locking piece is mounted in epiphysis, so that intramedullary rod can be fixed on long bone by it
In overall length, effectively prevent the generation of long bone fracture and maintain long Bones morphology, but intramedullary rod can be allowed with the increase of bone length and
It is automatic elongated, and children, so Physeal bar will not occur, are particularly suitable for since position is constant by the metal bar of epiphyseal plate
The patient of orthopaedics.
In addition, application No. is 200780010233.8 patents of invention to disclose a kind of fracture reducing assemblies, the fracture
Reset assembly includes implant, restorer, pillar and locking device.Controlled fracture reducing assemblies can be used to reset two or
More than two bone blocks, implant are an intramedullary needles, are also not limited to spike certainly.Implant includes the first opening, branch
Column extends there through.First opening is an extended hole slot, and the first opening is also possible to be any permission pillar relative to implant
There is the opening of minimal longitudinal movement.Implant distal end is provided with the second opening, and locking device is a bone nail.Implant
Including additional opening, third opening allows additional locking device, for bone nail proximal end bone block to implant, once it fractures
It has resetted.Third opening it is not necessary to, and the first opening is used to fixed implant to proximal end bone block.
Summary of the invention
In above-mentioned two documents, length of the Medullary fixation device without artificially controlling intramedullary rod, its object is to prevent
The generation of long bone fracture and the long Bones morphology of maintenance, can not be suitable for Limb lengthening；Even will suitable for Limb lengthening, then also compared with
Hardly possible realizes the purpose of Limb lengthening by the length of control intramedullary rod.In fracture reducing assemblies, pillar is forced to exist by housing screw
First opening is interior mobile and takes out housing screw and housing screw is passed through different openings, so as to adjust between two bone blocks
Spacing keeps the impaction state of bone block, but the fracture reducing assemblies can also reversely be used for Limb lengthening.
Goal of the invention of the invention is: in view of the problems of the existing technology, providing that a kind of length is adjustable and length tune
It is whole quickly and easily to combine internal fixation system for the bridge joint of Limb lengthening.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of bridge joint combination internal fixation system for Limb lengthening, including fixed guide pole and link block, the link block
Including being fixedly connected with block and mobile link block, the block that is fixedly connected is fixedly connected on fixed guide pole, described to be fixedly connected
Block is fixedly connected on by fastening screw in extended first bone block；The mobile link block is slidably connected at fixed guide pole
On, the mobile link block is fixedly connected on by fastening screw in extended second bone block；Described be fixedly connected on block is leaned on
Fixed link, the close end face for being fixedly connected with block side in the mobile link block are connected on the end face of nearly mobile link block side
On be connected with drive seat, be connected with drive rod in the drive seat, the drive rod connect and drive with fixed link drive rod and
Mobile link block is together along the axial movement of fixed guide pole.
Wherein, the fixed link is the bar that is screwed, and the drive rod is threaded drive rod, bar and the spiral shell of being screwed
Line drive rod is connected in a manner of worm and gear.
Wherein, the fixed link is rack gear fixed link, in the rack gear fixed link on the side of close drive rod side
It is furnished with rack gear, the drive rod is gear drive rod, is connected with gear on the gear drive rod or is evenly equipped with several circumferential directions
Tooth, the rack gear fixed link are connect in a manner of rack-and-pinion with gear drive rod.
Wherein, the fixed guide pole is two fixed guide poles arranged side by side, and the fastening screw is located at two admittedly
Determine between guide rod.
Wherein, block, the mobile link block of being fixedly connected includes at least two groups, and multiple groups are fixedly connected with block, mobile company
Block is connect successively to be arranged along the length direction of fixed guide pole.
Wherein, block, the mobile link block of being fixedly connected includes at least two groups, and multiple groups are fixedly connected with block, mobile company
Block is connect successively to be arranged along the length direction of fixed guide pole.
Wherein, the geometry of the screw thread on the fastening screw is zigzag, and the threaded portion of the fastening screw
Taper according to the length of screw thread is 1:150 to 1:130, the thread form height h of screw thread is 0.3 to 0.6mm, angle of thread α be 30 ° extremely
40 °, working face oblique angle β be 5 ° to 10 °, the wide f of crest is 0.08mm to 0.1mm, working face fillet r is 0.2mm to 0.7mm, non-
Working face fillet R is 0.5mm to 1.2mm.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, it in the present invention, is fixedly connected with block and is fixedly connected on fixed guide pole, being fixedly connected with block can not be in fixed guide
Along the axial movement of fixed guide pole on bar；Mobile link block is slidably connected on fixed guide pole, and mobile link block can be solid
Determine the axial movement on guide rod along fixed guide pole；Be fixedly connected block, mobile link block pass through fastening screw with it is corresponding
Bone block connection；It is fixedly connected on block and is connected and fixed bar, drive seat is connected in mobile link block, drive rod and fixation in drive seat
Bar connection, the fixed link select be screwed bar or rack gear fixed link, and drive rod selects threaded drive rod or gear drive rod, Gu
Fixed pole and drive rod are attached with the connection type of worm and gear or rack-and-pinion；When the spatium interosseum between bone block is smaller,
Drive rod rotation, the drive rod of rotation is connected through a screw thread or the mode of tooth engagement realizes movement in fixed link, so that driving
Bar, fixed link and mobile link block are moved along the axis of fixed guide pole together, and the gap between bone block is gradually increased；Pass through weight
The whole drive rod of polyphony readjusts the gap between bone block when healing fastly between bone block, is finally reached the purpose of Limb lengthening；Make
Used time, only driving boom end stretch out skin and show out, remaining component is respectively positioned in skin, bridge joint combination internal fixation system
Length it is adjustable and length adjustment is convenient, fast.
2, in the present invention, the geometry of the screw thread on the fastening screw is zigzag, the taper and tooth of the fastening screw
Type angle enhances holding power and pulling force effect and mechanical property of the screw thread in sclerotin, improves what fastening screw was fixed in bone block
Stability.
Detailed description of the invention
Fig. 1 is the main view when present invention uses；
Fig. 2 is the side view when present invention uses；
Fig. 3 is the partial schematic diagram of fastening screw in the present invention；
Wherein, appended drawing reference are as follows: the 1-the second bone block, 2-mobile link blocks, 3-fastening screws, 4-drive seats, 5-are driven
Lever, 6-fixed links, 7-fixed guide poles, 8-are fixedly connected with block, the 9-the first bone block.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
A kind of bridge joint combination internal fixation system for Limb lengthening comprising fixed guide pole 7 and link block, the link block
Including being fixedly connected with block 8 and mobile link block 2, this is fixedly connected with block 8 and is fixedly connected on fixed guide pole 7, and is fixedly connected
Block 8 can not move on fixed guide pole 7；The mobile link block 2 is slidably connected on fixed guide pole 7, and the mobile connection
Block 2 can on fixed guide pole 7 sliding axially along fixed guide pole 7.
The connection type to achieve a fixed connection between block 8, mobile link block 2 and fixed guide pole 7 is more.It can be solid
Determine link block 8, the bottom of mobile link block 2 opens up sliding slot, be fixedly connected with block 8, mobile link block 2 is directly placed at fixed guide
On bar 7, and it is fixedly connected with block 8 and the welded connecting of fixed guide pole 7, mobile link block 2 can be slided on fixed guide pole 7；?
Block 8 can be fixedly connected with, opening up through-hole in mobile link block 2, fixed guide pole 7 passes through and is fixedly connected with block 8, mobile link block
Through-hole on 2, and be interference fit between the through-hole being fixedly connected on block 8 and fixed guide pole 7, make to be fixedly connected with block 8 and consolidate
Determine guide rod 7 to be fixedly connected, is clearance fit between the through-hole in mobile link block 2 and fixed guide pole 7, so that mobile connection
Block 2 can be on fixed guide pole 7 along the axial movement of fixed guide pole 7.This, which is fixedly connected on block 8, is provided with fastening screw 3, Gu
Determine the fastening screw 3 on link block 8 to be directly anchored to in extended first bone block 9, thus the first bone block 9, is fixedly connected with block 8
It is connected as one with fixed guide pole 7, can not move between each other.Fastening screw is also equipped in the mobile link block 2
3, the fastening screw 3 in mobile link block 2 is directly anchored to in extended second bone block 1, thus when mobile link block 2 is solid
When determining on guide rod 7 along the axial movement of fixed guide pole 7, mobile link block 2 will pass through the fastening screw in mobile link block 2
3 drive the second bone block 1 mobile, so as to adjust the gap between the first bone block 9 and the second bone block 1.
It realizes the movement between the first bone block 9 and the second bone block 1, thus also needs setting driving device.For this purpose, the driving
Device includes fixed link 6, drive seat 4 and drive rod 5, which, which is fixedly connected on, is fixedly connected on block 8 close to mobile connection
On the end face of 2 side of block, it is connected as one fixed link 6 with block 8 is fixedly connected with；The drive seat 4 is fixedly connected on movement
Close to being fixedly connected on the end face of 8 side of block on link block 2, it is connected as one drive seat 4 with mobile link block 2, and
Drive seat 4 can be with mobile link block 2 together along the axial movement of fixed guide pole 7.It is connected with drive rod 5 in the drive seat 4, it should
Drive rod 5 connect with fixed link 6 and can drive drive rod 5 and mobile link block 2 together along the axial movement of fixed guide pole 7.
It realizes the connection by drive rod 5 and fixed link 6 and realizes driving drive rod 5 and mobile link block 2 edge together
The axial movement of fixed guide pole 7.Thus, there are many modes that realize this connection, and the application provides following two structure.
The first structure are as follows: the fixed link 6 is the bar 6 that is screwed, in fixed link 6 on the external cylindrical surface of close 2 side of mobile link block
It is provided with screw thread, which is threaded drive rod 5, is also provided on the external cylindrical surface of 6 side of fixed link on drive rod 5
There is screw thread, and the bar 6 that is screwed is attached in a manner of worm and gear with threaded drive rod 5；The outer power drive drive rod 5
When rotation, the drive rod 5 of rotation will generate displacement along the axial of fixed link 6 in fixed link 6, and the mobile of drive rod 5 will together
It drives drive seat 4, mobile link block 2 and the first bone block 9 mobile, realizes the purpose in gap between adjustment bone block.Second of structure
Are as follows: the fixed link 6 is rack gear fixed link 6, is evenly equipped with rack gear on the side of 5 side of drive rod in fixed link 6, the driving
Bar 5 is gear drive rod 5, is connected with gear on drive rod 5, or close to the outside cylinder of the side of fixed link 6 on drive rod 5
Along the uniformly distributed several circumferential teeth of the circumferential direction of drive rod 5 on face, carry out fixed link 6 and drive rod 5 with the engagement system of rack-and-pinion
Connection；When the outer power drive gear drive rod 5 rotates, the drive rod 5 of rotation produces the axial direction in fixed link 6 along fixed link 6
Raw displacement, the mobile of drive rod 5 will drive drive seat 4, mobile link block 2 and the first bone block 9 mobile together, and realize adjustment bone block
Between gap purpose.
In order to improve the stability of bridge joint combination internal fixation system, two fixations are set by the fixed guide pole 7 and are led
To bar 7, the two sides above bone block are arranged side by side in two 7 one the first from left right sides of fixed guide pole, this is fixedly connected with block 8 and mobile connection
Block 2 is disposed as butterfly structure, be fixedly connected block 8, mobile link block 2 left and right both ends with connection type above-mentioned respectively with
Left and right two fixed guide poles 7 realize connection.The fastening screw 3 is respectively arranged at being fixedly connected with block 8, moving for butterfly structure
The medium position of dynamic link block 2, is located at fastening screw 3 between two fixed guide poles 7.Thus in connection, middle position
Fastening screw 3 is connect with bone block, and fixed guide pole 7 is provided with the arranged on left and right sides of fastening screw 3.
Preferably, this, which is fixedly connected with block 8, mobile link block 2, can include at least two groups, and multiple groups are fixedly connected
Block 8, mobile link block 2 are successively arranged along the length direction of fixed guide pole 7.In attached drawing, it is fixedly connected with block 8, mobile connection
Block 2 is provided with two groups.
Since during Limb lengthening, bridge joint combination internal fixation system need to be set in bone block for a long time, thus tight
Gu the stability connected between screw 3 and bone block is just particularly important.For this purpose, the geometric form of the screw thread on the fastening screw 3
Shape is zigzag, and the taper of the threaded portion of fastening screw 3 is 1:150 to 1:130 according to the length of screw thread, fastening screw 3
The thread form height h of screw thread, working face oblique angle β, the wide f of crest, thread form height h, working face fillet r, non-working surface fillet R equidimension
More major diameter of thread d, screw pitch p match reasonable ratio.The thread form height h of the screw thread of the fastening screw 3 is 0.3 to 0.6mm, thread form
Angle α is 30 ° to 40 °, working face oblique angle β is 5 ° to 10 °, the wide f of crest is 0.08mm to 0.1mm, working face fillet r is 0.2mm
It is 0.5mm to 1.2mm to 0.7mm, non-working surface fillet R.
Embodiment 1
A kind of bridge joint combination internal fixation system for Limb lengthening, including fixed guide pole 7 and link block, the link block
Including being fixedly connected with block 8 and mobile link block 2, the block 8 that is fixedly connected is fixedly connected on fixed guide pole 7, the fixation
Link block 8 is fixedly connected on by fastening screw 3 in extended first bone block 9；The mobile link block 2 is slidably connected at solid
Determine on guide rod 7, the mobile link block 2 is fixedly connected on by fastening screw 3 in extended second bone block 1；It is described solid
Determine to be connected with fixed link 6 on link block 8 on the end face of 2 side of mobile link block, close to fixed in the mobile link block 2
It is connected with drive seat 4 on the end face of 8 side of link block, drive rod 5, the drive rod 5 and fixation are connected in the drive seat 4
Bar 6 connects and drives drive rod 5 and mobile link block 2 together along the axial movement of fixed guide pole 7.
Embodiment 2
A kind of bridge joint combination internal fixation system for Limb lengthening, including fixed guide pole 7 and link block, the link block
Including being fixedly connected with block 8 and mobile link block 2, the block 8 that is fixedly connected is fixedly connected on fixed guide pole 7, the fixation
Link block 8 is fixedly connected on by fastening screw 3 in extended first bone block 9；The mobile link block 2 is slidably connected at solid
Determine on guide rod 7, the mobile link block 2 is fixedly connected on by fastening screw 3 in extended second bone block 1；It is described solid
Determine to be connected with fixed link 6 on link block 8 on the end face of 2 side of mobile link block, close to fixed in the mobile link block 2
It is connected with drive seat 4 on the end face of 8 side of link block, drive rod 5, the drive rod 5 and fixation are connected in the drive seat 4
Bar 6 connects and drives drive rod 5 and mobile link block 2 together along the axial movement of fixed guide pole 7.
Wherein, the fixed link 6 is the bar 6 that is screwed, and the drive rod 5 is threaded drive rod 5, the bar that is screwed
6 are connect in a manner of worm and gear with threaded drive rod 5.
Embodiment 3
A kind of bridge joint combination internal fixation system for Limb lengthening, including fixed guide pole 7 and link block, the link block
Including being fixedly connected with block 8 and mobile link block 2, the block 8 that is fixedly connected is fixedly connected on fixed guide pole 7, the fixation
Link block 8 is fixedly connected on by fastening screw 3 in extended first bone block 9；The mobile link block 2 is slidably connected at solid
Determine on guide rod 7, the mobile link block 2 is fixedly connected on by fastening screw 3 in extended second bone block 1；It is described solid
Determine to be connected with fixed link 6 on link block 8 on the end face of 2 side of mobile link block, close to fixed in the mobile link block 2
It is connected with drive seat 4 on the end face of 8 side of link block, drive rod 5, the drive rod 5 and fixation are connected in the drive seat 4
Bar 6 connects and drives drive rod 5 and mobile link block 2 together along the axial movement of fixed guide pole 7.
Wherein, the fixed link 6 is rack gear fixed link 6, the side of close 5 side of drive rod in the rack gear fixed link 6
On be evenly equipped with rack gear, the drive rod 5 is gear drive rod 5, if being connected with gear on the gear drive rod 5 or being evenly equipped with
Dry circumferential direction tooth, the rack gear fixed link 6 are connect in a manner of rack-and-pinion with gear drive rod 5.
Embodiment 4
A kind of bridge joint combination internal fixation system for Limb lengthening, including fixed guide pole 7 and link block, the link block
Including being fixedly connected with block 8 and mobile link block 2, the block 8 that is fixedly connected is fixedly connected on fixed guide pole 7, the fixation
Link block 8 is fixedly connected on by fastening screw 3 in extended first bone block 9；The mobile link block 2 is slidably connected at solid
Determine on guide rod 7, the mobile link block 2 is fixedly connected on by fastening screw 3 in extended second bone block 1；It is described solid
Determine to be connected with fixed link 6 on link block 8 on the end face of 2 side of mobile link block, close to fixed in the mobile link block 2
It is connected with drive seat 4 on the end face of 8 side of link block, drive rod 5, the drive rod 5 and fixation are connected in the drive seat 4
Bar 6 connects and drives drive rod 5 and mobile link block 2 together along the axial movement of fixed guide pole 7.
Wherein, the fixed guide pole 7 is two fixed guide poles 7 arranged side by side, and the fastening screw 3 is located at two
Between fixed guide pole 7.
Embodiment 5
A kind of bridge joint combination internal fixation system for Limb lengthening, including fixed guide pole 7 and link block, the link block
Including being fixedly connected with block 8 and mobile link block 2, the block 8 that is fixedly connected is fixedly connected on fixed guide pole 7, the fixation
Link block 8 is fixedly connected on by fastening screw 3 in extended first bone block 9；The mobile link block 2 is slidably connected at solid
Determine on guide rod 7, the mobile link block 2 is fixedly connected on by fastening screw 3 in extended second bone block 1；It is described solid
Determine to be connected with fixed link 6 on link block 8 on the end face of 2 side of mobile link block, close to fixed in the mobile link block 2
It is connected with drive seat 4 on the end face of 8 side of link block, drive rod 5, the drive rod 5 and fixation are connected in the drive seat 4
Bar 6 connects and drives drive rod 5 and mobile link block 2 together along the axial movement of fixed guide pole 7.
Wherein, block 8, the mobile link block 2 of being fixedly connected includes at least two groups, and multiple groups are fixedly connected with block 8, movement
Link block 2 is successively arranged along the length direction of fixed guide pole 7.
Embodiment 6
On the basis of embodiment one or embodiment two, the fixed guide pole 7 is two fixed guides arranged side by side
Bar 7, the fastening screw 3 are located between two fixed guide poles 7.
Embodiment 7
On the basis of embodiment one or embodiment two, block 8, the mobile link block 2 of being fixedly connected includes at least two
Group, and multiple groups are fixedly connected with block 8, mobile link block 2 and are successively arranged along the length direction of fixed guide pole 7.
Embodiment 8
On the basis of the above embodiments, the geometry of the screw thread on the fastening screw 3 is zigzag, and described tight
Gu the taper of the threaded portion of screw 3 according to the length of screw thread is 1:150 to 1:130, the thread form height h of screw thread be 0.3 to
0.6mm, angle of thread α are 30 ° to 40 °, working face oblique angle β is 5 ° to 10 °, the wide f of crest is 0.08mm to 0.1mm, working face circle
Angle r is 0.2mm to 0.7mm, non-working surface fillet R is 0.5mm to 1.2mm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of bridge joint for Limb lengthening combines internal fixation system, it is characterised in that: including fixed guide pole (7) and connection
Block, the link block include being fixedly connected with block (8) and mobile link block (2), and the block (8) that is fixedly connected is fixedly connected on fixation
On guide rod (7), described be fixedly connected block (8) are fixedly connected on by fastening screw (3) on extended first bone block (9)；
The mobile link block (2) is slidably connected on fixed guide pole (7), and the mobile link block (2) is solid by fastening screw (3)
Surely it is connected to on extended second bone block (1)；The end face being fixedly connected on block (8) close to mobile link block (2) side
On be connected with fixed link (6), be connected with driving close to being fixedly connected on the end face of block (8) side on the mobile link block (2)
Seat (4) is connected with drive rod (5) on the drive seat (4), and drive rod (5) end is stretched out skin and shown out, the drive
Lever (5) connect with fixed link (6) and drives drive rod (5) and mobile link block (2) to move together along the axial direction of fixed guide pole
It is dynamic.
2. a kind of bridge joint for Limb lengthening as described in claim 1 combines internal fixation system, it is characterised in that: the fixation
Bar (6) is to be screwed bar (6), and the drive rod (5) is threaded drive rod (5), the bar that is screwed (6) and screw drive
Bar (5) is connected in a manner of worm and gear.
3. a kind of bridge joint for Limb lengthening as described in claim 1 combines internal fixation system, it is characterised in that: the fixation
Bar (6) is rack gear fixed link (6), is evenly equipped with rack gear on the side of drive rod (5) side on the rack gear fixed link (6),
The drive rod (5) is gear drive rod (5), is connected with gear on the gear drive rod (5) or is evenly equipped with several circumferential directions
Tooth, the rack gear fixed link (6) are connect in a manner of rack-and-pinion with gear drive rod (5).
4. a kind of bridge joint for Limb lengthening as claimed in claim 1,2 or 3 combines internal fixation system, it is characterised in that: institute
Stating fixed guide pole (7) is two fixed guide poles (7) arranged side by side, and the fastening screw (3) is located at two fixed guides
Between bar (7).
5. a kind of bridge joint for Limb lengthening as claimed in claim 4 combines internal fixation system, it is characterised in that: the fixation
Link block (8), mobile link block (2) include at least two groups, and multiple groups are fixedly connected with block (8), mobile link block (2) successively
Length direction along fixed guide pole (7) is arranged.
6. a kind of bridge joint for Limb lengthening as claimed in claim 1,2 or 3 combines internal fixation system, it is characterised in that: institute
It states and is fixedly connected with block (8), mobile link block (2) including at least two groups, and multiple groups are fixedly connected with block (8), mobile link block (2)
Successively it is arranged along the length direction of fixed guide pole (7).
7. a kind of bridge joint for Limb lengthening as described in claim 1 combines internal fixation system, it is characterised in that: the fastening
The geometry of screw thread on screw (3) is zigzag, and the taper of the threaded portion of the fastening screw (3) is according to the length of screw thread
Degree is 1:150 to 1:130, the thread form height h of screw thread is 0.3 to 0.6mm, angle of thread α is 30 ° to 40 °, working face oblique angle β is
5 ° to 10 °, the wide f of crest be 0.08mm to 0.1mm, working face fillet r is 0.2mm to 0.7mm, non-working surface fillet R is 0.5mm
To 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135137.7A CN105686872B (en) | 2016-03-10 | 2016-03-10 | A kind of bridge joint combination internal fixation system for Limb lengthening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135137.7A CN105686872B (en) | 2016-03-10 | 2016-03-10 | A kind of bridge joint combination internal fixation system for Limb lengthening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105686872A CN105686872A (en) | 2016-06-22 |
| CN105686872B true CN105686872B (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610135137.7A Active CN105686872B (en) | 2016-03-10 | 2016-03-10 | A kind of bridge joint combination internal fixation system for Limb lengthening |
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| Country | Link |
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| CN (1) | CN105686872B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109276301B (en) * | 2018-08-09 | 2020-12-18 | 盐城日升月恒智能科技有限公司 | Intramedullary and extramedullary combined electric bone lengthening device |
| CN112220541B (en) * | 2020-11-11 | 2021-07-23 | 佳木斯大学附属第一医院 | Wrist fracture first aid external fixation support |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3611319A1 (en) * | 1986-04-04 | 1987-10-15 | Witzel Ulrich | FIXATEUR EXTERNAL ON OSTEOSYNTHESIS |
| JP4601664B2 (en) * | 2004-03-10 | 2010-12-22 | シンセス ゲーエムベーハー | External fixation device for joining bones |
| RU2016101629A (en) * | 2009-09-04 | 2018-12-04 | Нувэйсив Спешилайзд Ортопэдикс, Инк. | DEVICE AND METHOD FOR BONE EXTENSION |
| JP2010137071A (en) * | 2010-02-15 | 2010-06-24 | Medeiko Intermedia:Kk | Bone extension device |
| CN102599967A (en) * | 2012-04-17 | 2012-07-25 | 上海市奉贤区中心医院 | Surgical indirect repositor for bone fracture |
| CN202908827U (en) * | 2012-11-14 | 2013-05-01 | 天津市新中医疗器械有限公司 | Adjustable pressurized extending device |
| CN204092157U (en) * | 2014-09-23 | 2015-01-14 | 江苏百易得医疗科技有限公司 | The adjustable blade plate of synosteosis |
| CN205411278U (en) * | 2016-03-10 | 2016-08-03 | 成都新澳冠医疗器械有限公司 | A fixing system in bridging combination for bone extension |
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2016
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