CN209574849U - Long bone fracture compression steel plate external fixator - Google Patents
Long bone fracture compression steel plate external fixator Download PDFInfo
- Publication number
- CN209574849U CN209574849U CN201821243611.9U CN201821243611U CN209574849U CN 209574849 U CN209574849 U CN 209574849U CN 201821243611 U CN201821243611 U CN 201821243611U CN 209574849 U CN209574849 U CN 209574849U
- Authority
- CN
- China
- Prior art keywords
- screw hole
- steel plate
- bone
- link block
- manner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 208000010392 Bone Fractures Diseases 0.000 title claims abstract description 38
- 230000006835 compression Effects 0.000 title claims abstract description 20
- 238000007906 compression Methods 0.000 title claims abstract description 20
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 80
- 230000007704 transition Effects 0.000 claims abstract description 9
- 210000004872 soft tissue Anatomy 0.000 claims abstract description 6
- 208000034656 Contusions Diseases 0.000 claims abstract description 4
- 208000034526 bruise Diseases 0.000 claims abstract description 3
- 230000001054 cortical effect Effects 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 2
- 230000004520 agglutination Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 206010017076 Fracture Diseases 0.000 description 16
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 208000029549 Muscle injury Diseases 0.000 description 1
- 208000028389 Nerve injury Diseases 0.000 description 1
- 208000002565 Open Fractures Diseases 0.000 description 1
- 208000005214 Poroma Diseases 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000026137 Soft tissue injury Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000009519 contusion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000001013 eccrine acrospiroma Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007659 motor function Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model relates to long bone fracture compression steel plate external fixators, have at least two lock shafts and link block.At least two first screw holes are circumferentially provided on link block along link block, accommodate at least two lock shafts in a manner of it can be rotated and is dismountable to link block.The glissile segment being arranged in a manner of coaxial line with the first thread segment that lock shaft includes to be connect with the first thread segment that the first screw hole agrees with, it is arranged in a manner of clearance fit or transition fit between glissile segment and the sliding block for being provided with the clamp with bone nail in an articulated manner, to sliding block and lock shaft mobile connection and rotation connection；It is provided with the second screw hole agreed with notch in sliding block, is fixedly connected to sliding block with lock shaft.The technical solution is particularly suitable for the long bone fracture with soft tissue bruise, it overcomes existing external fixator and only passes through steel frame construction bring in fracture site agglutination, bring the broken ends of fractured bone of steel frame deformation secondary or the inaccurate problem of positioning such as multiple dislocation due to resetting stress.
Description
Technical field
The utility model relates to fixed outside fractures equipment technology field more particularly to a kind of long bone fracture compression steel plate
Device.
Background technique
Long bone is primarily present in four limbs, is the important component of quadruped locomotion system, and muscle is attached on long bone of limbs,
It is shunk according to the order of brain, affects long bone to complete motor function.Long bone severe trauma is such as damaged with serious soft tissue
The open fracture of wound is a huge challenge to Orthopedic Clinical.Long bone fracture is such as with soft tissue injury situation, using interior
Ligamentopexis can be to the secondary contusion of soft tissue.Therefore, this kind of fracture is through carrying out operative treatment frequently with expopexy.
For example, the adjustable bone of axial pressure power between a kind of bone block disclosed in the Chinese patent of Publication No. CN108236491A
Roll over external fixing rack.When solving to carry out firm fixation to fracture using existing fracture fixation instrument, Chang Wufa makes appropriateness between sclerite
The problem of pressurization, it is characterised in that the hack lever of this external fixing rack is segmented, and every section of one or both ends have plug or interface；It inserts
Spring arrangement (one or more of metal spring, gas spring, elastic material pad) is had in head or interface, constituting after grafting can
The hack lever of segmentation, the combined bay of globality is made up of this attachment device by the attachment device of axial pressure power between adjusting bone block
Bar.By the elastic force for adjusting whole spring arrangement, thus it is possible to vary this attachment device is to two segment frame bars of its two sides in long axis side
The size of upward active force, and then adjust axial pressure power between bone block.The present invention is used for fracture fixation, solid to fracture stabilization
While determining, excessive stress shielding can be avoided, flexible quantization regulation can be realized between the axial pressure power bone block, is made
Its optimal level needed for meeting union, promotes union.
Above-mentioned apparatus, which passes through, promotes fracture site healing by the external axial compressive force that applies.Above-mentioned technical proposal at least exists
Only by steel frame construction bring in fracture site agglutination, due to reset stress bring steel frame deformation so as to cause
The inaccurate technical problem of the positioning such as secondary or multiple dislocation of fracture site.
Summary of the invention
For the deficiencies of the prior art, the present invention provides a kind of long bone fracture compression steel plate external fixators.It has extremely
Few two lock shafts and link block, the circumferential direction on the link block along the link block are provided at least two first screw holes, use
At least two lock shaft is accommodated in a manner of it can be rotated and is dismountable by the link block, wherein the lock shaft includes
The glissile segment for connecting and being arranged in a manner of coaxial line with first thread segment with the first thread segment that first screw hole agrees with,
With clearance fit or transition fit between the glissile segment and the sliding block for being provided with the clamp with bone nail in an articulated manner
Mode is arranged, the sliding block and the lock shaft mobile connection and rotation connection in non-pressurized condition to the fixator；
The second screw hole agreed with the notch is provided in the sliding block, to the fixator in pressurized state the sliding block with
The lock shaft is fixedly connected；The link block at least two first screw hole in a manner of not interfering along the link block
Axial direction be provided with the second thread segment, to the link block by can be rotated and it is dismountable in a manner of accommodate threaded rod, the spiral shell
One end of rasp bar is removably connect with pressure pad, and the pressure pad is connect with the steel plate with several third screw holes.
Be preferably carried out mode according to one kind, one end of the glissile segment in a manner of coaxial line by First Transition section with
The first thread segment connection；The other end of the glissile segment passes through first with the first spanner of receiving in a manner of coaxial line
Second changeover portion of driving hole is connect with third thread segment.
It is preferably carried out mode according to one kind, the lead angle of first screw hole is less than the first screw hole screw pair
Equivalent friction angle；And/or the lead angle of second screw hole is less than the equivalent friction angle of the second screw hole screw pair；With/
Or the lead angle of the third screw hole is less than the equivalent friction angle of third screw hole screw pair.
It is preferably carried out mode according to one kind, the other end setting of the threaded rod is used for the second spanner of the second spanner
Hole, to, in pressurized state, the threaded rod is rotatably connected with the link block in the fixator.
It is preferably carried out mode according to one kind, retaining mechanism is provided between the clamping bar of the clamp, to the fixation
Device is fixedly connected between the clamping bar in pressurized state.
It is preferably carried out mode according to one kind, the third screw hole includes cancellous bone screw hole, cortical screw hole, bone bolt
Hole and/or hollow screw hole；The cancellous bone screw hole, the cortical screw hole, the bone keyhole and/or the hollow spiral shell
Nail hole is set in the steel plate with array manner.
Be preferably carried out mode according to one kind, the bone nail include helicitic texture bone nail trunk and with the bone nail master
The dry bone nail tip for having helicitic texture being arranged in a manner of integral type.
It is preferably carried out mode according to one kind, the end of the clamping bar is provided with the 4th screw hole, to accommodate the bone nail
Trunk；The lead angle of 4th screw hole is less than the equivalent friction angle of the 4th screw hole screw pair, so that the fixation
In pressurized state, the clamping bar is fixedly connected device with the bone nail.
It is preferably carried out mode according to one kind, the steel plate is provided with the anti-slip layer being made of at least one non-slipping block；Institute
State the surface that at least one non-slipping block is set to the close limbs of the steel plate in array fashion.
It is preferably carried out mode according to one kind, cross section is the axis of the circular pressure pad and the axis of the threaded rod
Line is overlapped；The radius of the pressure pad is 3~5 times of the threaded rod radius.
The utility model provides a kind of long bone fracture compression steel plate external fixator, at least has the advantage that
(1) by way of to steel plate pressurization and locking sliding block, so that external fixator is in stable working condition, fracture
The broken ends of fractured bone not will cause steel plate and be displaced phenomenon, the stress in agglutination is transferred to sliding by clamp in agglutination
The first thread segment in block neutralizes to be converted into deformed threads energy and discharges in the second screw hole；
(2) adjusting of sliding block uses two modes.One is sliding blocks to slide on lock shaft, according to medical staff to the state of an illness
Diagnosis primarily determine bone nail be pierced into position；A kind of lock shaft band movable slider micro-shifting is dynamic, position that fine adjustment bone nail is pierced into and
Convenient for the reset of fracture site；
(3) by steel plate pressurization data, form poroma convenient for patient's broken ends of fractured bone, be also prevented from the stress formed in reseting procedure and make
The case where at Plate break；
(4) over the course for the treatment of, according to the rehabilitation situation of patient, by screwing in the degree of threaded rod in link block to pressurization
Pressure adjustable.
Detailed description of the invention
Fig. 1 is a kind of a kind of main view of preferred structure of long bone fracture compression steel plate external fixator provided by the utility model
The schematic diagram of figure；
Fig. 2 is that a kind of preferred structure of the lock shaft of long bone fracture compression steel plate external fixator provided by the utility model shows
It is intended to；
Fig. 3 is a kind of left view of preferred structure of long bone fracture compression steel plate external fixator provided by the utility model
Schematic diagram；With
Fig. 4 is a kind of preferably bottom view of the steel plate of long bone fracture compression steel plate external fixator provided by the utility model
Schematic diagram.
Reference signs list
1: sliding block 6b: clamping bar
2: lock shaft 6c: locking mechanism
2a: the first thread segment 7: third screw hole
2b: glissile segment 7a: cancellous bone screw hole
2c: the first driving hole 7b: cortical screw hole
2d: notch 7c: bone keyhole
2e: third thread segment 7d: hollow screw hole
2f: First Transition section 8: steel plate
2g: the second changeover portion 8a: non-slipping block
3: the first spanners 9: threaded rod
4: the second screw hole, 10: the second spanner
5: long bone 11: pressure pad
6: clamp 12: link block
6a: bone nail
Specific embodiment
It is described in detail with reference to the accompanying drawing.
It in description of the invention, term " first ", " second ", " third " and is used for description purposes only, and should not be understood as
Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic." first ", " are defined as a result,
Two ", " third " and feature can explicitly or implicitly include one or more of the features.In retouching for the utility model
In stating, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " inside ", " inside " is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the present invention, term " removably " is bonding, key connection, threaded connection, pin connection, card
Connect, hingedly, one of clearance fit or transition fit.It for the ordinary skill in the art, can be according to specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1
The present embodiment provides a kind of long bone fracture compression steel plate external fixators, and at least there are two lock shaft 2 and link blocks for tool
12, at least two have been arranged radially along link block 12 by way of mirror image using 12 axis of link block as symmetry axis on link block 2
A first screw hole accommodates at least two lock shafts 2 in a manner of it can be rotated and is dismountable to link block 12.For example, it is preferable to,
As shown in Figure 1, fixed appliance is there are two lock shaft 2 and link block 12, wherein with 12 axis of link block be symmetrical on link block 2
Axis being arranged radially there are two the first screw hole along link block 12 by way of mirror image, two the first screw holes accommodate lock shaft one by one
2.Preferably, the first screw hole is screw hole.First screw hole can also be only threaded hole.It is observed in top view direction, two lockings
The axis of axis 2 is vertical with the axis of threaded rod 9.For another example, the first screw hole can be 3, and 4 or more, arrangement mode can
To be the then fixed appliance along through to (such as 3 the first screw holes, the angle between screw hole is 120 ° two-by-two) is arranged in neat mode
There is the lock shaft of corresponding number and arrangement.Its arrangement mode can be along through to arranging (such as 3 first in a manner of irregular
Screw hole, angle are respectively 60 °, 90 ° and 210 °), then fixator has the lock shaft of corresponding number and arrangement.As shown in Fig. 2, lock
Mandrel 2, which includes, to be connect with the first thread segment 2a that the first screw hole agrees with and is arranged in a manner of coaxial line with the first thread segment 2a
Glissile segment 2b.Between glissile segment 2b and the sliding block 1 for being provided with the clamp 6 with bone nail 6a in an articulated manner with clearance fit or
The mode of transition fit is arranged, sliding block 1 and 2 mobile connection of lock shaft and rotation connection in non-pressurized condition to fixator.
The second screw hole 4 agreed with notch 2d is provided in sliding block 1, sliding block 1 and lock shaft 2 are fixed in pressurized state to fixator
Connection.Link block 12 is provided with the second screw thread along the axial direction of link block 12 in the mode non-interference at least two first screw holes
Section accommodates threaded rod 9 in a manner of it can be rotated and is dismountable to link block 12.One end of threaded rod 9 is removably
It is connect with pressure pad 11.Pressure pad 11 is connect with the steel plate 8 with several third screw holes 7.Wherein, at least two first spiral shells
The non-interference mode in hole refers to, non-overlapping part between the second thread segment and at least two first screw holes, for example, the first screw hole
The second thread segment is not extended to.Specifically, one end of threaded rod 9 is connect in a manner of being clamped with pressure pad 11.Pressure pad 11
It is fixedly connected by welding with steel plate 8.Pressure pad 11 plays a part of to steel plate 8 " pressurization ", and principle is threaded rod 9 and connects
The pressure of screw thread and the weight transfer of threaded rod 9, link block 12 and lock shaft 2 are connect between block 12 to steel plate 8.
Its working principle and application method: when 5 fracture patient of long bone is seen a doctor, by technologies such as X-rays, determining patient positions,
And it makes marks.Threaded rod 9 is screwed into link block 12 and is connect with pressure pad 11, pressure pad 11 is aligned to the position for the section that fractures, is added
Pressure pad 11 is upper, and steel plate 8 is under.Lock shaft 2 is screwed into the first screw hole (being advisable with being capable of fixing, do not tighten) of link block 12.
Medical staff fractures fracture and position according to patient, and sliding block 1 is first used to determine the portion for needing bone nail to be pierced into a manner of transferring greatly
Then position is being finely adjusted the dynamic position for determining and bone nail being needed to be pierced into lock shaft 2, bone nail 6a is pierced into bone by clamp 6
Then head is tentatively resetted the broken ends of fractured bone by the movement of sliding block 1.By to lock shaft 2 be finely adjusted it is dynamic will be more sharp at broken ends of fractured bone reset
It forms a scab in bone, and the second screw hole will be squeezed into the matched screw of the second screw hole and realize fixation.By the rotation of threaded rod 9 to steel
Plate 8 pressurizes, and then, squeezes into bone screws in third threaded hole 7.Complete the reset entirely fractured.The technical solution is especially suitable
In with soft tissue bruise (use internal fixation, need to carry out secondary removing to soft tissue, it is secondary to muscle injury or nerve
Damage) long bone fracture, overcome existing external fixator and only pass through steel frame construction bring in fracture site agglutination, by
Bring the steel frame deformation bring broken ends of fractured bone secondary or the inaccurate problem of positioning such as multiple dislocation in resetting stress.
Preferably, one end of glissile segment 2g is connected in a manner of coaxial line by First Transition section 2f and the first thread segment 2a
It connects.The other end of glissile segment 2g passes through the second mistake with the first driving hole 2c for accommodating the first spanner 3 in a manner of coaxial line
Section 2g is crossed to connect with third thread segment 2e.Third thread segment 2e matching thread spanner is for fastening and rotating lock shaft 2.
Preferably, to avoid misplacing in bone agglutination, to the helicitic texture at locking and pressurization using self-locking
Mode be arranged.Equivalent friction angle of the lead angle of first screw hole less than the first screw hole screw pair.The screw thread liter of second screw hole 4
Equivalent friction angle of the angle less than the second screw hole screw pair.The lead angle of third screw hole 7 is less than working as 7 screw pair of third screw hole
Measure angle of friction.Lead angle is lead angle, the tangent line of helix and the interplanar perpendicular to the axis of thread on central diameter cylinder
Angle.Screw pair is the auxiliary connection that part mutually moves, such as the kinematic pair between the first screw hole and the first thread segment 2a.Screw thread
The angle of the vertical plane of the side and axis of thread of tooth form claims flank angle β, symmetrical flank angle β=α/2, then the equivalent of screw thread
Coefficient of friction fv=f/cos β, then equivalent friction angle Φ=arctanfv, wherein coefficient of friction of the f between screw thread pair.
Preferably, the other end setting of threaded rod 9 is used for the second driving hole of the second spanner 10, to add in fixator
When pressure condition, threaded rod 9 is rotatably connected with link block 12.
Preferably, as shown in figure 4, being provided with retaining mechanism 6c between the clamping bar 6b of clamp 6, to fixator in pressurization shape
It is fixedly connected between clamping bar 6b when state.Retaining mechanism 6c can be one or more of springlock and steel wire bundle structure.
Preferably, third screw hole 7 includes cancellous bone screw hole 7a, cortical screw hole 7b, bone keyhole 7c and/or hollow
Screw hole 7d.Cancellous bone screw hole 7a, cortical screw hole 7b, bone keyhole 7c and/or hollow screw hole 7d are set with array manner
It is placed in steel plate 8.As shown in figure 3, third screw hole 7 is with " cancellous bone screw hole/cortical screw hole/bone keyhole/hollow screw
The permutation mode in hole/cancellous bone screw hole/cortical screw hole/bone keyhole/hollow screw hole " arranges.According to the condition of the injury of patient,
Third screw hole 7 can also only include in cancellous bone screw hole 7a, cortical screw hole 7b, bone keyhole 7c and hollow screw hole 7d
One kind, such as only include cancellous bone screw hole 7a.Third screw hole 7 can also only include cortical screw hole 7b and bone keyhole 7c.
Cancellous bone screw hole 7a, cortical screw hole 7b, bone keyhole 7c and hollow screw hole 7d be respectively used to accommodate cancellous bone screw,
Os integumentale screw, bone keyhole and hollow screw.Cancellous bone screw, os integumentale screw, bone keyhole and hollow screw are all to belong to bone
The common bone screws in folding field.
Preferably, bone nail 6a includes the bone nail trunk of helicitic texture and has with what bone nail trunk was arranged in a manner of integral type
The bone nail tip of helicitic texture.
Preferably, the end of clamping bar 6b is provided with the 4th screw hole, to accommodate bone nail trunk.The lead angle of 4th screw hole
Less than the equivalent friction angle (screw thread self-locking is arranged in the 4th screw hole and bone nail 6a) of the 4th screw hole screw pair, so that fixator is adding
When pressure condition, clamping bar 6b is fixedly connected with bone nail 6a.
Preferably, steel plate 8 is provided with the anti-slip layer being made of at least one non-slipping block 8a.At least one non-slipping block 8a is with battle array
The mode of column is set to the surface of the close limbs of steel plate 8.As shown in figure 3, array manner cloth of the non-slipping block 8a to be staggered up and down
It is placed in the surface of the close limbs of steel plate 8.Non-slipping block 8a can be one of antiskid thread, non-slip mat and anti-skidding silica gel or
It is several.Non-slipping block can be 1, and 2 even more, as shown in figure 3, shared non-slipping block shares 8.
Preferably, it is contemplated that pressure effect.Cross section is the axis of circular pressure pad 11 and the axis weight of threaded rod 9
It closes.The radius of pressure pad 11 is 3~5 times of 9 radius of threaded rod.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can disclose in the present invention
Various solutions are found out under the inspiration of content, and these solutions also belong to disclosure of the invention range and fall into this hair
Within bright protection scope.It will be understood by those skilled in the art that description of the invention and its attached drawing are illustrative and are not
Constitute limitations on claims.Protection scope of the present invention is defined by the claims and their equivalents.
Claims (9)
1. a kind of long bone fracture compression steel plate external fixator, suitable for the external fixator of the long bone fracture with soft tissue bruise,
It has at least two lock shafts (2) and link block (12), which is characterized in that along the link block on the link block (12)
(12) circumferential to be provided at least two first screw holes, institute is accommodated in a manner of it can be rotated and is dismountable to the link block (12)
State at least two lock shafts (2), wherein
The lock shaft (2) includes connect with the first thread segment (2a) that first screw hole agrees with and with first thread segment
The glissile segment (2b) that (2a) is arranged in a manner of coaxial line, the glissile segment (2b) and is provided in an articulated manner with bone nail
The sliding block (1) of the clamp (6) of (6a) is arranged in a manner of clearance fit or transition fit, to the fixator in non-pressurised shape
The sliding block (1) and the lock shaft (2) mobile connection and rotation connection when state；It is provided in the sliding block (1) and notch
The second screw hole (4) that (2d) agrees with, to the fixator, in pressurized state, the sliding block (1) and the lock shaft (2) are solid
Fixed connection；
The link block (12) is in the mode non-interference at least two first screw hole along the axis of the link block (12)
To the second thread segment is provided with, accommodated threaded rod (9) in a manner of it can be rotated and is dismountable to the link block (12), it is described
The axis of threaded rod (9) is perpendiculared to one another with the axis of the lock shaft (2)；
One end of the threaded rod (9) is removably connect with pressure pad (11), and the pressure pad (11) is if with having
Steel plate (8) connection of dry third screw hole (7)；
One end of the glissile segment (2b) passes through First Transition section (2f) and first thread segment (2a) in a manner of coaxial line
Connection；The other end of the glissile segment (2b) is in a manner of coaxial line by with the first driving hole for accommodating the first spanner (3)
Second changeover portion (2g) of (2c) is connect with third thread segment (2e).
2. long bone fracture compression steel plate external fixator as described in claim 1, which is characterized in that the screw thread of first screw hole
Lift angle is less than the equivalent friction angle of the first screw hole screw pair；And/or
The lead angle of second screw hole (4) is less than the equivalent friction angle of the second screw hole screw pair；And/or
The lead angle of the third screw hole (7) is less than the equivalent friction angle of third screw hole (7) screw pair.
3. long bone fracture compression steel plate external fixator as claimed in claim 2, which is characterized in that the threaded rod (9) it is another
One end setting be used for the second spanner (10) the second driving hole, in the fixator in pressurized state, the threaded rod
(9) it is rotatably connected with the link block (12).
4. long bone fracture compression steel plate external fixator as claimed in claim 3, which is characterized in that the clamping bar of the clamp (6)
Retaining mechanism (6c) is provided between (6b), to fixed company of the fixator in pressurized state between the clamping bar (6b)
It connects.
5. long bone fracture compression steel plate external fixator as claimed in claim 4, which is characterized in that third screw hole (7) packet
Include cancellous bone screw hole (7a), cortical screw hole (7b), bone keyhole (7c) and/or hollow screw hole (7d)；The cancellous bone
Screw hole (7a), the cortical screw hole (7b), the bone keyhole (7c) and/or the hollow screw hole (7d) are with array side
Formula is set in the steel plate (8).
6. long bone fracture compression steel plate external fixator as claimed in claim 5, which is characterized in that the bone nail (6a) includes
The bone nail trunk of helicitic texture and the bone nail tip for having helicitic texture being arranged in a manner of integral type with the bone nail trunk.
7. long bone fracture compression steel plate external fixator as claimed in claim 6, which is characterized in that the end of the clamping bar (6b)
It is provided with the 4th screw hole, to accommodate the bone nail trunk；
The lead angle of 4th screw hole is less than the equivalent friction angle of the 4th screw hole screw pair, so that the fixator
In pressurized state, the clamping bar (6b) is fixedly connected with the bone nail (6a).
8. long bone fracture compression steel plate external fixator as claimed in claim 7, which is characterized in that the steel plate (8) is provided with
The anti-slip layer being made of at least one non-slipping block (8a)；
At least one described non-slipping block (8a) is set to the surface of the close limbs of the steel plate (8) in array fashion.
9. long bone fracture compression steel plate external fixator as claimed in claim 8, which is characterized in that cross section is circular described
The axis of pressure pad (11) is overlapped with the axis of the threaded rod (9)；The radius of the pressure pad (11) is the threaded rod (9)
3~5 times of radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821243611.9U CN209574849U (en) | 2018-08-03 | 2018-08-03 | Long bone fracture compression steel plate external fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821243611.9U CN209574849U (en) | 2018-08-03 | 2018-08-03 | Long bone fracture compression steel plate external fixator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209574849U true CN209574849U (en) | 2019-11-05 |
Family
ID=68372490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821243611.9U Expired - Fee Related CN209574849U (en) | 2018-08-03 | 2018-08-03 | Long bone fracture compression steel plate external fixator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209574849U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114617624A (en) * | 2022-03-09 | 2022-06-14 | 四川大学华西医院 | A pull-reduction aid for femoral shaft fracture surgery |
| CN114680955A (en) * | 2020-12-30 | 2022-07-01 | 沛嘉医疗科技(苏州)有限公司 | Tissue fixing device with self-locking function |
| CN115192161B (en) * | 2022-07-27 | 2025-04-15 | 中国人民解放军总医院第四医学中心 | A reduction fixation frame for orthopedics |
-
2018
- 2018-08-03 CN CN201821243611.9U patent/CN209574849U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114680955A (en) * | 2020-12-30 | 2022-07-01 | 沛嘉医疗科技(苏州)有限公司 | Tissue fixing device with self-locking function |
| CN114680955B (en) * | 2020-12-30 | 2024-05-14 | 沛嘉医疗科技(苏州)有限公司 | Tissue fixing device with self-locking function |
| CN114617624A (en) * | 2022-03-09 | 2022-06-14 | 四川大学华西医院 | A pull-reduction aid for femoral shaft fracture surgery |
| CN114617624B (en) * | 2022-03-09 | 2023-05-23 | 四川大学华西医院 | Lifting and reduction aid for femoral shaft fracture surgery |
| CN115192161B (en) * | 2022-07-27 | 2025-04-15 | 中国人民解放军总医院第四医学中心 | A reduction fixation frame for orthopedics |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210307791A1 (en) | Rod reduction device and method of use | |
| EP0840573B1 (en) | Orthopaedic fixator | |
| US10010348B2 (en) | External fixation | |
| US4696293A (en) | Hinged external fixator | |
| US20100152786A1 (en) | Orthopedic bone fixation | |
| MXPA02011690A (en) | Disposable external fixation device. | |
| JP2000516105A (en) | External fixture with gear | |
| JP2009514652A (en) | Rear adjustment multiple rod connector | |
| CN209574849U (en) | Long bone fracture compression steel plate external fixator | |
| IL279605B1 (en) | External fixation connection pin with female connector | |
| CN103445839A (en) | Ankle multidimensional regulation-control orthosis | |
| CN209301266U (en) | It is a kind of freely to adjust pelvis external fixed mount | |
| WO2017071403A1 (en) | Minimally invasive double screw-plug bolt | |
| CN212679239U (en) | A kind of wire reducer used in fracture surgery | |
| CN109700514A (en) | A kind of fracture of tibia closed reduction Multiway traction frame | |
| CN211535055U (en) | Orthopedics splint installation fastener for orthopedics | |
| CN209548074U (en) | A fracture fixation clip | |
| TROSTLE et al. | In vitro biomechanical comparison of solid and tubular interlocking nails in neonatal bovine femurs | |
| CN112790849A (en) | A femoral neck bidirectional compression distance-limiting sliding screw and screwdriver | |
| CN108236491A (en) | The adjustable outside fixed frame for external osteosynthesis of axial plus-pressure between a kind of bone block | |
| CN110772310B (en) | Nailing device and working method thereof | |
| CN102657565B (en) | Universal-joint-type fracture external-fixation device | |
| CN208551990U (en) | The connector that arc struts or pressurizes | |
| CN105559835A (en) | Incision tissue retractor | |
| CN219184052U (en) | Lumbar vertebra slipping orthosis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191105 Termination date: 20200803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |