CN108814701A - The anti-loosening bone nail of centring type for bone surgery - Google Patents
The anti-loosening bone nail of centring type for bone surgery Download PDFInfo
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- CN108814701A CN108814701A CN201810335848.8A CN201810335848A CN108814701A CN 108814701 A CN108814701 A CN 108814701A CN 201810335848 A CN201810335848 A CN 201810335848A CN 108814701 A CN108814701 A CN 108814701A
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- spill spin
- spin block
- threaded rod
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 35
- 238000001356 surgical procedure Methods 0.000 title claims abstract description 9
- 241001079814 Symphyotrichum pilosum Species 0.000 claims abstract description 50
- 235000004224 Typha angustifolia Nutrition 0.000 claims abstract description 50
- 230000000694 effects Effects 0.000 claims abstract description 16
- 239000013013 elastic material Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 28
- 239000010959 steel Substances 0.000 description 28
- 238000000034 method Methods 0.000 description 19
- 238000005553 drilling Methods 0.000 description 14
- 208000010392 Bone Fractures Diseases 0.000 description 5
- 206010017076 Fracture Diseases 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 210000000689 upper leg Anatomy 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 208000024779 Comminuted Fractures Diseases 0.000 description 1
- 208000008924 Femoral Fractures Diseases 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention provides the anti-loosening bone nails of centring type for bone surgery,Including tightening section,Fixed section,Expansion piece,Revolving part,Described tightens section for receiving extraneous screwing force,The fixed section is for being fixed knochenbruch,The revolving part, which is socketed on, to be tightened section and provides expansive force to expansion piece,The expansion piece expands under expansive force effect,The section of tightening includes head,Threaded rod,The threaded rod is fixedly and coaxially connected in head,The threaded rod can be divided into three parts and respectively be thread segment a,Smooth section,Thread segment b,The fixed section includes nail rod,The nail rod is the cylindrical structure coaxially arranged with threaded rod,The periphery of nail rod is provided with several along the equally distributed lock projection of nail rod circumferencial direction,Active connection is provided between the smooth section of the nail rod and threaded rod and nail rod is installed on the smooth section of threaded rod by active connection.
Description
Technical field
The present invention relates to a kind of for bone nail fixed between sufferer knochenbruch and steel plate of fracturing.
Background technique
Femur is called thigh, and violence directly hits, falls from eminence pendant, Vehicular impact, rolls etc. and can all cause femur bone
Folding, when femoral fracture occurs, lower limb are stiff, and fracture serious swelling, pain there is also the deformities such as distortion or angulation,
Sometimes it may occur in which that Leg length shortens, if there is open wound simultaneously, the state of an illness is more serious, can often patient be made to suffer a shock,
Femur is the maximum bone of whole body, such as handles not in time after fracture, can cause the Complicated with Severe such as the big bleeding of patient, neurotrosis
Disease, knochenbruch in the prior art are fixed and generally use internal fixation with steel plate, during Interal fixation, if being set to the through-hole of steel plate
When having error with the alignment being set between the drilling of knochenbruch, Interal fixation can be made insecure, it is existing that the later period will appear loosening
As being unfavorable for the rehabilitation recovery from illness of sufferer.
Summary of the invention
To solve the deficiencies in the prior art, the object of the present invention is to provide a kind of bone nails of self-centering alignment, to solve
The alignment between steel plate and knochenbruch mentioned in certainly above-mentioned background has error, the unstable problem of Interal fixation.
To realize the above-mentioned technical purpose, the technical solution adopted in the present invention is as follows.
The anti-loosening bone nail of centring type for bone surgery, including section, fixed section, expansion piece, revolving part are tightened, it is described
Section is tightened for receiving extraneous screwing force and rotating under screwing force effect, the fixed section is contacted with the through-hole of knochenbruch and is used in combination
It is fixed in knochenbruch, the revolving part is socketed on to tighten section and tighten section and rotate and draw revolving part and move synchronously, simultaneously
And revolving part is used to provide expansion piece expansive force, the expansion piece expands under expansive force effect and for carrying out to knochenbruch
Self-centering, fixation；
The section of tightening includes head, threaded rod, and the threaded rod is fixedly connected on head and head and threaded rod are same
Axis arrangement, head receive extraneous screwing force and rotate under screwing force effect, and head rotation simultaneously draws threaded rod synchronous rotation, institute
The threaded rod stated can be divided into three parts and be respectively the thread segment a being fixedly connected with head, the smooth section far from head, be located at
Thread segment b between smooth section and thread segment a, the thread rotary orientation of the thread segment a are opposite with the thread rotary orientation of thread segment b；
The fixed section includes nail rod, and the nail rod is the cylindrical structure coaxially arranged with threaded rod, the outer circle of nail rod
Face is provided with several and is parallel to nail along the extending direction of the equally distributed lock projection of nail rod circumferencial direction and lock projection
The axial direction of bar, is provided with active connection between the nail rod and the smooth section of threaded rod and nail rod passes through active connection
It is installed on the smooth section of threaded rod.
Further improvement as the technical program.
Above-mentioned nail rod is far from mounting groove a is provided at the end face center of threaded rod, the nail rod is close to threaded rod
It is provided with mounting groove b at end face center, is arranged at the center in region between the slot bottom of the mounting groove a, the slot bottom of mounting groove b
There is the mounting hole a connected with mounting groove a, mounting groove b, and mounting hole a, mounting groove a, mounting groove b are coaxially arranged；
The smooth section of the threaded rod is far from being provided with threaded hole at the end face center on head, and the periphery of smooth section is set
It is equipped with external step, the smooth section of the threaded rod passes through mounting groove b and is located in mounting hole a and is set to outside smooth section
The slot bottom of the external step on surface and mounting groove b contradict and smooth section can be described around own axis in mounting hole a
Active connection be the screw to match with threaded hole, the screw pass through mounting groove a and be installed in threaded hole and
The head of screw and the slot bottom of mounting groove a contradict.
Further improvement as the technical program.
Above-mentioned revolving part include spill spin block a, spill spin block b, the spill spin block a, spill spin block b shape it is consistent and
It is divided into rotary table section, cylindrical section, the big end of the rotary table section is fixedly connected with cylindrical section and rotary table section and the coaxial cloth of cylindrical section
It sets, the periphery of the rotary table section is vertically installed with fixed guide plate and the extending direction of fixed guide plate is parallel to rotary table
The axial direction of section；
The set through cylindrical section height, rotary table section height is coaxially arranged at the end face center of the cylindrical section of the spill spin block a
Hole a and sets of holes a and thread segment a matches, spill spin block a are socketed on outside and the spill spin block a of thread segment a by sets of holes a
Rotary table section is coaxially arranged at head, the end face center of the cylindrical section of the spill spin block b far from head, cylindrical section to be run through
Cylindrical section height, the sets of holes b of rotary table section height and sets of holes b and thread segment b match, and spill spin block b is socketed on spiral shell by sets of holes b
Close to head, cylindrical section far from head, threaded rod rotates and draws spill spin block for the outside of line section b and the rotary table section of spill spin block b
A, spill spin block b is moved toward one another.
Further improvement as the technical program.
Above-mentioned expansion piece includes the expansion tube made of elastic material, and the expansion tube is the column cylinder of both ends open
The periphery of body structure and expansion tube is provided with form friction pattern, and the periphery of expansion tube is offered and is set in expansion piece
Inflation lumen connect and through expansion length of tube fixing groove, the inflation lumen of the expansion tube can be divided into three parts and
Respectively boot segment a, boot segment b, between boot segment a and boot segment b and be in cylindrical structure expansion arc, it is described
Boot segment a is that the small end of the frustum cone structure and boot segment a that match with the rotary table section of spill spin block a is connect with expansion arc, described
Boot segment b be that the small end of the frustum cone structure and boot segment b that match with the rotary table section of spill spin block b is connect with expansion arc, institute
The expansion tube stated is socketed on the outside of threaded rod, and an open end of the expansion tube is socketed on spill spin block a's by boot segment a
Rotary table section is external, another be open is socketed on outside the rotary table section of spill spin block b by boot segment b, and is set to spill spin block a, rotation
The fixed guide plate of switch block b is respectively positioned in fixing groove.
The beneficial effect of the present invention compared with prior art is that the present invention is completed using the cooperation of revolving part and expansion piece
To the fixation between steel plate and sufferer knochenbruch, the problems in sufferer knochenbruch fixation procedure can be solved, if such as being set to
When alignment precision between the through-hole of steel plate and the drilling for being set to knochenbruch is low, expansion piece can be automatically performed in expansion process
Centering is aligned between steel plate and knochenbruch, so that the fixation between steel plate and knochenbruch is more stable, is not easy to loosen, is beneficial to sufferer
Recovery from illness.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is structural schematic diagram of the invention.
Fig. 3 be it is of the invention tighten section, revolving part, expansion piece cooperation figure.
Fig. 4 tightens section and revolving part cooperation figure for of the invention.
Fig. 5 is the structural schematic diagram of revolving part of the invention.
Fig. 6 is the structural schematic diagram of expansion piece of the invention.
Fig. 7 is the cross-sectional view for tightening section and fixed section of the invention.
Fig. 8 is the structural schematic diagram of fixed section of the invention.
Each label meaning is in figure：
100, section is tightened；110, head；120, threaded rod；121, thread segment a；122, thread segment b；
200, fixed section；210, screw rod；220, nut；230, fixed guide pole；240, nail rod；250, screw；260, threaded hole；
300, expansion piece；310, fixing groove；320, inflation lumen；
400, revolving part；410, rotary table section；420, cylindrical section；430, fixed guide plate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in figures 1-8, for the anti-loosening bone nail of the centring type of bone surgery, including section 100, fixed section 200, swollen is tightened
Swollen part 300, revolving part 400, the section 100 of tightening is used to receive extraneous screwing force and rotates under screwing force effect, described
Fixed section 200 contacted with the through-hole of knochenbruch and be used to that knochenbruch to be fixed, the revolving part 400, which is socketed on, tightens section
100 and tighten section 100 rotate and draw revolving part 400 move synchronously and revolving part 400 for expansion piece 300 is provided it is swollen
Expansive force, the expansion piece 300 expand under expansive force effect and for carrying out self-centering, fixation to knochenbruch.
The bone nail that the present invention uses is advantageous in that sufferer knochenbruch fixation, and the present invention is using revolving part and expansion piece
Cooperation completes that the problems in sufferer knochenbruch fixation procedure can be solved to the fixation between steel plate and sufferer knochenbruch, such as
If be set to the through-hole of steel plate and be set to knochenbruch drilling between alignment precision it is low when, expansion piece is in expansion process, meeting
It is automatically performed centering between steel plate and knochenbruch to be aligned, so that the fixation between steel plate and knochenbruch is more stable, is not easy to loosen, it is beneficial
In the recovery from illness of sufferer.
As shown in Figure 3-4, above-mentioned section 100 of tightening includes head 110, threaded rod 120, and the threaded rod 120 is fixed
It is connected to head 110 and head 110 and threaded rod 120 is coaxially arranged, head 110 receives extraneous screwing force and tightening masterpiece
With lower rotation, head 110 rotates and draws the synchronous rotation of threaded rod 120, and the threaded rod 120 can be divided into three parts and divide
The smooth section of the thread segment a121, separate head 110 that Wei not be fixedly connected with head 110 are located at smooth section and thread segment a121
Between thread segment b122, the thread rotary orientation of the thread segment a121 is opposite with the thread rotary orientation of thread segment b122.
More specifically, described in order to make head 110 be easier to receive extraneous screwing force and be rotated under screwing force effect
Head 110 is provided with far from the end face of threaded rod 120 and tightens hole, it is preferred that the hole of tightening is hexagon, and master worker can
Screwing force is applied to head 110 using allen wrench, facilitates operation.
As illustrated in figures 4-5, above-mentioned revolving part 400 includes spill spin block a, spill spin block b, the spill spin block a, spill spin block b
Shape it is consistent and can be divided into rotary table section 410, cylindrical section 420, specifically, the big end and cylindrical section of the rotary table section 410
420 are fixedly connected and rotary table section 410 and cylindrical section 420 are coaxially arranged, and the periphery of the rotary table section 410 is vertically installed with
The extending direction of fixed guide plate 430 and fixed guide plate 430 is parallel to the axial direction of rotary table section 410.
It is coaxially arranged at the end face center of the cylindrical section 420 of the spill spin block a through 420 height of cylindrical section, rotary table
The sets of holes a and sets of holes a of 410 height of section match with thread segment a121, and spill spin block a is socketed on thread segment a121 by sets of holes a
Outside and spill spin block a rotary table section 410 far from head 110, cylindrical section 420 close to head 110, the spill spin block b's
It is coaxially arranged at the end face center of cylindrical section 420 through 420 height of cylindrical section, the sets of holes b of 410 height of rotary table section and sets of holes
B matches with thread segment b122, and spill spin block b is socketed on the outside of thread segment b122 and the rotary table section of spill spin block b by sets of holes b
410 close to head 110, cylindrical section 420 far from head 110, threaded rod 120 rotates and draws spill spin block a, spill spin block b is done in opposite directions
Movement.
Since spill spin block a, spill spin block b are installed on threaded rod 120 and thread segment a121, screw thread by way of screw thread socket
The thread rotary orientation of section b122 is on the contrary, in order to make spill spin block a, spill spin block b smoothly be installed on threaded rod 120, the thread segment
The diameter of b122 is less than the diameter of thread segment a121；The installation process of revolving part 400, is embodied in：Due to the set of spill spin block a
Hole a and thread segment a121 matches and the diameter of thread segment b122 is less than the diameter of thread segment a121, and spill spin block a can smoothly be worn
It crosses thread segment b122 and is socketed on outside thread segment a121, after spill spin block a is installed, spill spin block b is socketed on thread segment
The outside of b122, revolving part 400 are installed.
As shown in Fig. 3,6, above-mentioned expansion piece 300 includes the expansion tube made of elastic material, and the expansion tube is
The cylindrical barrel body structure of both ends open and the periphery of expansion tube are provided with form friction pattern, and the periphery of expansion tube offer with
The inflation lumen 320 being set in expansion piece 300 is connected and through the fixing groove 310 of expansion length of tube, the expansion tube
Inflation lumen 320 can be divided into three parts and respectively boot segment a, boot segment b, between boot segment a and boot segment b simultaneously
And be in the expansion arc of cylindrical structure, the boot segment a be the frustum cone structure that matches with the rotary table section 410 of spill spin block a simultaneously
And the small end of boot segment a is connect with expansion arc, the boot segment b is the rotary table knot to match with the rotary table section 410 of spill spin block b
The small end of structure and boot segment b are connect with expansion arc, and the expansion tube is socketed on the outside of threaded rod 120, specifically, described
Expansion tube the open end rotary table section 410 that is socketed on spill spin block a by boot segment a is external, another opening passes through boot segment b
Be socketed on outside the rotary table section 410 of spill spin block b, and be set to spill spin block a, the fixed guide plate 430 of spill spin block b be respectively positioned on it is solid
Determine in slot 310；The expansion process of expansion tube, is embodied in：It is outer due to expansion tube when bone nail is placed in the through-hole of knochenbruch
Disc is provided with form friction pattern, so that expansion tube can not rotate in the through-hole of knochenbruch, and due to being set to spill spin block a, spill spin block b
Fixed guide plate 430 be respectively positioned in fixing groove 310 so that spill spin block a, spill spin block b can not be rotated and can only be along expansion tubes
Axial movement, head 110 receive extraneous screwing force and screwing force effect under rotate, head 110 rotate simultaneously draws threaded rod
120 rotate synchronously, since spill spin block a, spill spin block b can not be rotated, so that threaded rod 120 rotates and draws spill spin block a, spill spin block
B is moved toward one another along the axial direction of expansion tube, and in this motion process, expansion tube is gradually uniformly strutted by revolving part 400 outward, expansion
Pipe is inflated；Expansion tube is uniformly distracted outward to be advantageous in that, if the through-hole of knochenbruch expands tube swelling without coaxially centering alignment
The through-hole of knochenbruch can be made to move in the process, to reach self centering purpose.
（First embodiment）
As shown in fig. 7, above-mentioned fixed section 200 includes nail rod 240, the nail rod 240 is coaxially arranged with threaded rod 120
Cylindrical structure, the periphery of nail rod 240 be provided with several along the equally distributed lock projection of 240 circumferencial direction of nail rod and
The extending direction of lock projection is parallel to the axial direction of nail rod 240, sets between the nail rod 240 and the smooth section of threaded rod 120
It is equipped with active connection and nail rod 240 is installed on the smooth section of threaded rod 120 by active connection.
Mounting groove a is provided at the end face center of the nail rod 240 far from threaded rod 120, the nail rod 240 is close
Mounting groove b, region between the slot bottom of the mounting groove a, the slot bottom of mounting groove b are provided at the end face center of threaded rod 120
Center at be provided with the mounting hole a connected with mounting groove a, mounting groove b, and mounting hole a, mounting groove a, mounting groove b are coaxial
Arrangement.
The smooth section of the threaded rod 120 is far from being provided with threaded hole 260, and light at the end face center on head 110
The periphery of sliding section is provided with external step, the smooth section of the threaded rod 120 pass through mounting groove b and be located in mounting hole a,
And the slot bottom for the external step and mounting groove b for being set to smooth section outer surface contradicts and smooth section can be around certainly in mounting hole a
Body axis rotation, the active connection are the screw 250 to match with threaded hole 260, and the screw 250 passes through installation
Slot a is simultaneously installed on slot bottom conflict of in the threaded hole 260 and head of screw 250 with mounting groove a；Nail rod 240 and threaded rod
Engagement process between 120, is embodied in：When bone nail is placed in the through-hole of knochenbruch, since the periphery of nail rod 240 is arranged
There is lock projection, so that nail rod 240 is fixed in through-hole, and since the smooth section of threaded rod 120 can be around certainly in mounting hole a
Body axis rotation, so that the rotation of threaded rod 120 is not influenced by nail rod 240, in addition to this, nail rod 240 is fixed on the through-hole of knochenbruch
When interior, due to the external step of smooth section outer surface and slot bottom conflict, the head of screw 250 and the slot of mounting groove a of mounting groove b
Bottom contradict so that tighten section 100 can only be rotated in the through-hole of knochenbruch and can not be along the axial movement of through-hole.
When bone nail works, bone nail is placed in the through-hole for being set to steel plate and is set in the drilling of patient's knochenbruch, due to
The periphery of nail rod 240 is provided with lock projection so that nail rod 240 is fixed in the drilling of knochenbruch, and due to nail rod 240 with
Be attached between threaded rod 120 by screw 250 so that tighten section 100 can only be rotated in the through-hole of steel plate and can not edge
The axial movement of through-hole, simultaneously because the periphery of expansion tube is provided with form friction pattern, so that expansion tube nothing in the through-hole of steel plate
Method rotation.
Apply screwing force to section 100 is tightened by allen wrench, head 110 receives screwing force and under screwing force effect
Threaded rod 120 is driven to rotate, the fixed guide plate 430 due to being set to spill spin block a, spill spin block b is respectively positioned in fixing groove 310,
So that spill spin block a, spill spin block b can not be rotated and can only be rotated along the axial movement of expansion tube, threaded rod 120 and draw rotation
Block a, spill spin block b are moved toward one another along the axial direction of expansion tube, and in this motion process, expansion tube is gradually equal outward by revolving part 300
Even to strut, expansion tube is inflated, when the cylindrical section 420 of spill spin block a, spill spin block b move to intracavitary in the expansion arc of expansion tube,
Stop to the application screwing force of section 100 is tightened, fracture patient completes Interal fixation at this time.
The fixed method of knochenbruch is carried out to fracture patient using flush type screw, step is：
S1：Complete be set to the through-hole of steel plate and be set to patient's knochenbruch drilling between alignment, bone nail is placed in setting
In steel plate through-hole and be set in the drilling of patient's knochenbruch；The bone nail includes tightening section 100, fixed section 200, expansion piece
300, revolving part 400, the section 100 of tightening includes head 110, threaded rod 120, and the threaded rod 120 is fixedly connected on
Head 110 and head 110 and threaded rod 120 are coaxially arranged, threaded rod 120 can be divided into three parts and be respectively and head
110 be fixedly connected thread segment a121, far from the smooth section on head 110, the screw thread between smooth section and thread segment a121
Section b122, the thread rotary orientation of the thread segment a121 and the thread rotary orientation of thread segment b122 are on the contrary, the revolving part 400 wraps
Include spill spin block a, spill spin block b, the spill spin block a are socketed on the outside of thread segment a121, the spill spin block b is socketed on screw thread
The outside of section b122, the expansion piece 300 includes the expansion tube made of elastic material, and the expansion tube is both ends open
Cylindrical barrel body structure and the periphery of expansion tube be provided with form friction pattern, an open end of the expansion tube is socketed on spill spin block
External, another opening of a is socketed on the outside of spill spin block b, and the fixed section 200 includes nail rod 240, the nail rod 240
For the cylindrical structure coaxially arranged with threaded rod 120, the periphery of nail rod 240 is provided with several along 240 circumference side of nail rod
Be parallel to the axial direction of nail rod 240 to the extending direction of equally distributed lock projection and lock projection, the nail rod 240 with
It is provided with active connection between the smooth section of threaded rod 120 and nail rod 240 is installed on threaded rod 120 by active connection
Smooth section；When bone nail being placed in the through-hole for being set to steel plate in the drilling for being set to patient's knochenbruch, due to nail rod 240
Periphery is provided with lock projection, so that nail rod 240 is fixed in the drilling of knochenbruch, and due to nail rod 240 and threaded rod 120
Between be attached by active connection so that tighten section 100 can only be rotated in the through-hole of steel plate and can not be along through-hole
It is axially moved, simultaneously because the periphery of expansion tube is provided with form friction pattern, so that expansion tube can not rotate in the through-hole of steel plate；
S2：Apply screwing force to section 100 is tightened by allen wrench, head 110 receives screwing force and under screwing force effect
Threaded rod 120 is driven to rotate, threaded rod 120 rotates and draws spill spin block a, spill spin block b is moved toward one another along the axial direction of expansion tube,
In this motion process, expansion tube is gradually uniformly strutted by spill spin block a, spill spin block b outward, and expansion tube is inflated, when spill spin block a,
When spill spin block b is moved in the inflation lumen 320 of expansion tube, stop to the application screwing force of section 100 is tightened, at this point, fracture patient
Complete Interal fixation.
（Second embodiment）
Present embodiment is different from the structure that the difference of first embodiment essentially consists in fixed section 200.
As shown in figure 8, above-mentioned fixed section 200 includes the nut 220 that screw rod 210 and screw rod 210 match, it is described
Screw rod 210 is the cylindrical structure coaxially arranged with threaded rod 120, and the nut 220 is socketed on the outside of screw rod 210, institute
It is provided with active connection between the screw rod 210 stated and the smooth section of threaded rod 120 and screw rod 210 is pacified by active connection
Smooth section loaded on threaded rod 120.
Mounting groove c is provided at the end face center of the screw rod 210 far from threaded rod 120, the screw rod 210 is close
Mounting groove d, region between the slot bottom of the mounting groove a, the slot bottom of mounting groove b are provided at the end face center of threaded rod 120
Center at be provided with the mounting hole b connected with mounting groove c, mounting groove d, and mounting hole b, mounting groove c, mounting groove d are coaxial
Arrangement.
The smooth section of the threaded rod 120 is far from being provided with threaded hole 260, and light at the end face center on head 110
The periphery of sliding section is provided with external step, the smooth section of the threaded rod 120 pass through mounting groove d and be located in mounting hole b,
And the slot bottom for the external step and mounting groove d for being set to smooth section outer surface contradicts and smooth section can be around certainly in mounting hole b
Body axis rotation, the active connection are the screw 250 to match with threaded hole 260, and the screw 250 passes through installation
Slot c is simultaneously installed on slot bottom conflict of in the threaded hole 260 and head of screw 250 with mounting groove c；Due to the light of threaded rod 120
Sliding section in mounting hole b can around own axis, so that the rotation of threaded rod 120 is not influenced by screw rod 210, in addition to this, by
It is contradicted in the external step of smooth section outer surface and the slot bottom of mounting groove d, the slot bottom conflict on the head of screw 250 and mounting groove c,
So that traction screw 210 moves synchronously when threaded rod 120 is axially moved along the through-hole of knochenbruch.
After expansion tube is completed to expand, need rotating nuts 220 that it is made to do the movement close to knochenbruch, until it is close with knochenbruch
It stops rotating when conflict, since to be rotatably assorted, master worker needs to limit when rotating nuts 220 between screw rod 210 and threaded rod 120
The rotation of screw rod 210 processed, in addition to this, being rotatably assorted between screw rod 210 and threaded rod 120 also will cause knochenbruch and be not fixed firmly
By the problem of, to solve this problem, be provided with fixed guide component between the screw rod 210 and spill spin block b, due to rotation
Block b can not be around own axis and can only be along the axial movement of expansion tube, so that the rotation of screw rod 210 is limited.
The fixed guide component include the fixed guide pole 230 for being set to end face of the screw rod 210 towards spill spin block b,
It is set to spill spin block b and fixed guide hole that is corresponding with fixed guide pole 230 and matching, the fixed guide pole
230 extending direction is parallel to the axial direction of screw rod 210, it is preferred that for the restriction effect for rotating spill spin block b to screw rod 210
More preferably, the fixed guide component be provided with four groups and four groups of fixed guide components along screw rod 210 circumferencial direction in equal
Even issued at intervals；The limit procedure that spill spin block b rotates screw rod 210, is embodied in：Due to the extension of fixed guide pole 230
Being oriented parallel to the axial direction of screw rod 210, i.e. the extending direction of fixed guide pole 230 is parallel with the direction of motion of spill spin block b, so that
Fixed guide component does not influence the expansion process of expansion tube, after expansion tube completes expansion, due to spill spin block b and fixed guide component
Cooperation limit the rotation of screw rod 210, nut 220 is smoothly rotated, operation is facilitated.
When bone nail works, the fixed section 200 of bone nail sequentially passes through the through-hole a for being set to steel plate a, the brill for being set to knochenbruch
Hole, the through-hole b for being set to steel plate b, since the periphery of expansion tube is provided with form friction pattern so that expansion tube through-hole a, drilling,
It can not be rotated in through-hole b.
Apply screwing force to section 100 is tightened by allen wrench, head 110 receives screwing force and under screwing force effect
Threaded rod 120 is driven to rotate, the fixed guide plate 430 due to being set to spill spin block a, spill spin block b is respectively positioned in fixing groove 310,
So that spill spin block a, spill spin block b can not be rotated and can only be rotated along the axial movement of expansion tube, threaded rod 120 and draw rotation
Block a, spill spin block b are moved toward one another along the axial direction of expansion tube, and in this motion process, expansion tube is gradually equal outward by revolving part 300
Even to strut, expansion tube is inflated, when the cylindrical section 420 of spill spin block a, spill spin block b move to intracavitary in the expansion arc of expansion tube,
Stopping applies screwing force to section 100 is tightened.
Rotating nuts 220 simultaneously make it do the movement close to steel plate b, until it stops rotating when closely contradicting with steel plate b, this
When patient complete Interal fixation.
To the method that comminuted fracture patient carries out Interal fixation, step is：
S1：Completion is set to the through-hole a of steel plate a, the through-hole b for being set to steel plate b, pair being set between the drilling of patient's knochenbruch
Bone nail is placed in through-hole a, through-hole b, in drilling by standard；The bone nail includes tightening section 100, fixed section 200, expansion piece
300, revolving part 400, the section 100 of tightening includes head 110, threaded rod 120, and the threaded rod 120 is fixedly connected on
Head 110 and head 110 and threaded rod 120 are coaxially arranged, threaded rod 120 can be divided into three parts and be respectively and head
110 be fixedly connected thread segment a121, far from the smooth section on head 110, the screw thread between smooth section and thread segment a121
Section b122, the thread rotary orientation of the thread segment a121 and the thread rotary orientation of thread segment b122 are on the contrary, the revolving part 400 wraps
Include spill spin block a, spill spin block b, the spill spin block a are socketed on the outside of thread segment a121, the spill spin block b is socketed on screw thread
The outside of section b122, the expansion piece 300 includes the expansion tube made of elastic material, and the expansion tube is both ends open
Cylindrical barrel body structure and the periphery of expansion tube be provided with form friction pattern, an open end of the expansion tube is socketed on spill spin block
External, another opening of a is socketed on the outside of spill spin block b, and the fixed section 200 includes screw rod 210, nut 220, described
Screw rod 210 is the cylindrical structure coaxially arranged with threaded rod 120, and the nut 220 is socketed on outside screw rod 210, described
Screw rod 210 and threaded rod 120 smooth section between be provided with active connection and screw rod 210 pass through active connection install
In the smooth section of threaded rod 120；The fixed section 200 of bone nail sequentially passes through through-hole a, drilling, through-hole b, due to the outer circle of expansion tube
Face is provided with form friction pattern, so that expansion tube can not rotate in through-hole a, drilling, through-hole b；
S2：Apply screwing force to section 100 is tightened by allen wrench, head 110 receives screwing force and under screwing force effect
Threaded rod 120 is driven to rotate, threaded rod 120 rotates and draws spill spin block a, spill spin block b is moved toward one another along the axial direction of expansion tube,
In this motion process, expansion tube is gradually uniformly strutted by spill spin block a, spill spin block b outward, and expansion tube is inflated, when spill spin block a,
When spill spin block b is moved in the inflation lumen 320 of expansion tube, stopping applies screwing force to section 100 is tightened；
S3：Rotating nuts 220；The fixation for limiting the rotation of screw rod 210 is provided between the screw rod 210 and spill spin block b
Guidance set, the fixed guide component include the fixed guide pole 230 for being set to end face of the screw rod 210 towards spill spin block b,
It is set to spill spin block b and fixed guide hole that is corresponding with fixed guide pole 230 and matching, the fixed guide pole
230 extending direction is parallel to the axial direction of screw rod 210；Rotating nuts 220 simultaneously make it do the movement close to steel plate b, until its with
Steel plate b stops rotating when closely contradicting, and patient completes Interal fixation at this time.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (4)
1. being used for the anti-loosening bone nail of centring type of bone surgery, which is characterized in that it includes tightening section, fixed section, expansion piece, rotation
Turn part, it is described to tighten section for receiving extraneous screwing force and rotating under screwing force effect, the fixed section and knochenbruch
Through-hole contacts and is used to that knochenbruch to be fixed, and the revolving part is socketed on to tighten section and tighten section and rotates and draw rotation
Part moves synchronously and revolving part is used to provide expansion piece expansive force, and the expansion piece expands simultaneously under expansive force effect
For carrying out self-centering, fixation to knochenbruch；
The section of tightening includes head, threaded rod, and the threaded rod is fixedly connected on head and head and threaded rod are same
Axis arrangement, head receive extraneous screwing force and rotate under screwing force effect, and head rotation simultaneously draws threaded rod synchronous rotation, institute
The threaded rod stated can be divided into three parts and be respectively the thread segment a being fixedly connected with head, the smooth section far from head, be located at
Thread segment b between smooth section and thread segment a, the thread rotary orientation of the thread segment a are opposite with the thread rotary orientation of thread segment b；
The fixed section includes nail rod, and the nail rod is the cylindrical structure coaxially arranged with threaded rod, the outer circle of nail rod
Face is provided with several and is parallel to nail along the extending direction of the equally distributed lock projection of nail rod circumferencial direction and lock projection
The axial direction of bar, is provided with active connection between the nail rod and the smooth section of threaded rod and nail rod passes through active connection
It is installed on the smooth section of threaded rod.
2. the anti-loosening bone nail of the centring type according to claim 1 for bone surgery, which is characterized in that above-mentioned nail rod
It is provided with mounting groove a at end face center far from threaded rod, the nail rod is provided with peace at the end face center of threaded rod
Tankage b, is provided with and mounting groove a, mounting groove at the center in region between the slot bottom of the mounting groove a, the slot bottom of mounting groove b
The mounting hole a that b is connected, and mounting hole a, mounting groove a, mounting groove b are coaxially arranged；
The smooth section of the threaded rod is far from being provided with threaded hole at the end face center on head, and the periphery of smooth section is set
It is equipped with external step, the smooth section of the threaded rod passes through mounting groove b and is located in mounting hole a and is set to outside smooth section
The slot bottom of the external step on surface and mounting groove b contradict and smooth section can be described around own axis in mounting hole a
Active connection be the screw to match with threaded hole, the screw pass through mounting groove a and be installed in threaded hole and
The head of screw and the slot bottom of mounting groove a contradict.
3. the anti-loosening bone nail of the centring type according to claim 1 for bone surgery, which is characterized in that above-mentioned rotation
Part includes that spill spin block a, spill spin block b, the spill spin block a, the shape of spill spin block b are consistent and can be divided into rotary table section, cylindrical section,
The big end of the rotary table section is fixedly connected with cylindrical section and rotary table section and cylindrical section are coaxially arranged, outside the rotary table section
The extending direction that disc is vertically installed with fixed guide plate and fixed guide plate is parallel to the axial direction of rotary table section；
The set through cylindrical section height, rotary table section height is coaxially arranged at the end face center of the cylindrical section of the spill spin block a
Hole a and sets of holes a and thread segment a matches, spill spin block a are socketed on outside and the spill spin block a of thread segment a by sets of holes a
Rotary table section is coaxially arranged at head, the end face center of the cylindrical section of the spill spin block b far from head, cylindrical section to be run through
Cylindrical section height, the sets of holes b of rotary table section height and sets of holes b and thread segment b match, and spill spin block b is socketed on spiral shell by sets of holes b
Close to head, cylindrical section far from head, threaded rod rotates and draws spill spin block for the outside of line section b and the rotary table section of spill spin block b
A, spill spin block b is moved toward one another.
4. the anti-loosening bone nail of the centring type according to claim 1 or 3 for bone surgery, which is characterized in that above-mentioned
Expansion piece includes the expansion tube made of elastic material, and the expansion tube is the cylindrical barrel body structure and expansion tube of both ends open
Periphery be provided with form friction pattern, and the periphery of expansion tube offers and is set to the inflation lumen in expansion piece and connects simultaneously
And through the fixing groove of expansion length of tube, the inflation lumen of the expansion tube can be divided into three parts and respectively boot segment a,
Boot segment b, between boot segment a and boot segment b and be in cylindrical structure expansion arc, the boot segment a be and rotation
The small end of frustum cone structure and boot segment a that the rotary table section of switch block a matches is connect with expansion arc, the boot segment b be with
The small end of frustum cone structure and boot segment b that the rotary table section of spill spin block b matches is connect with expansion arc, the expansion tube socket
In the outside of threaded rod, the rotary table section that an open end of the expansion tube is socketed on spill spin block a by boot segment a is external, another
One opening is socketed on outside the rotary table section of spill spin block b by boot segment b, and the fixation for being set to spill spin block a, spill spin block b is led
It is respectively positioned in fixing groove to plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810335848.8A CN108814701B (en) | 2018-04-16 | 2018-04-16 | Centering type anti-loosening bone nail for orthopedic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810335848.8A CN108814701B (en) | 2018-04-16 | 2018-04-16 | Centering type anti-loosening bone nail for orthopedic surgery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108814701A true CN108814701A (en) | 2018-11-16 |
| CN108814701B CN108814701B (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810335848.8A Expired - Fee Related CN108814701B (en) | 2018-04-16 | 2018-04-16 | Centering type anti-loosening bone nail for orthopedic surgery |
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| Country | Link |
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| CN (1) | CN108814701B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112155701A (en) * | 2020-10-10 | 2021-01-01 | 江山市人民医院 | Adjustable screw for calcaneus |
| CN112603517A (en) * | 2020-12-04 | 2021-04-06 | 无锡市第九人民医院 | Hollow bidirectional threaded nail used in fracture treatment process |
| CN114376693A (en) * | 2021-12-29 | 2022-04-22 | 江苏艾迪尔医疗科技股份有限公司 | Tarsal sinus stabilizer for talus turnover |
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| JP2002221215A (en) * | 2000-11-24 | 2002-08-09 | Asano Kinzoku Kogyo Kk | Screw-connecting structure for connecting pin |
| US6668688B2 (en) * | 2001-06-28 | 2003-12-30 | Mayo Foundation | Expandable screw apparatus and method thereof |
| CN2809311Y (en) * | 2005-03-21 | 2006-08-23 | 艾华 | Expansion bolt |
| CN201027743Y (en) * | 2006-12-29 | 2008-02-27 | 徐云龙 | Double-point expansion screw |
| CN102470007A (en) * | 2009-07-06 | 2012-05-23 | 斯恩蒂斯有限公司 | Expandable fixation assemblies |
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|---|---|---|---|---|
| JPH0842526A (en) * | 1994-08-04 | 1996-02-13 | Topy Fastener Kogyo Kk | Shaft fixation method to metal surface as of aluminum diecast and clip therefor |
| JP2002221215A (en) * | 2000-11-24 | 2002-08-09 | Asano Kinzoku Kogyo Kk | Screw-connecting structure for connecting pin |
| US6668688B2 (en) * | 2001-06-28 | 2003-12-30 | Mayo Foundation | Expandable screw apparatus and method thereof |
| CN2809311Y (en) * | 2005-03-21 | 2006-08-23 | 艾华 | Expansion bolt |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112155701A (en) * | 2020-10-10 | 2021-01-01 | 江山市人民医院 | Adjustable screw for calcaneus |
| CN112155701B (en) * | 2020-10-10 | 2023-03-28 | 江山市人民医院 | Adjustable screw for calcaneus |
| CN112603517A (en) * | 2020-12-04 | 2021-04-06 | 无锡市第九人民医院 | Hollow bidirectional threaded nail used in fracture treatment process |
| CN114376693A (en) * | 2021-12-29 | 2022-04-22 | 江苏艾迪尔医疗科技股份有限公司 | Tarsal sinus stabilizer for talus turnover |
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| Publication number | Publication date |
|---|---|
| CN108814701B (en) | 2021-01-01 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Pengfei Inventor after: Guo Jifeng Inventor after: Li Hongwei Inventor after: Wei Daping Inventor before: Wei Daping |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201211 Address after: 471000 No. 82 Qiming South Road, Henan, Luoyang Applicant after: Luoyang Orthopedic-Traumatological Hospital Of Henan Province(Henan Provincial Orthopedic Hospital) Address before: 211189 Southeast University, No. 2, Four Pailou, Xuanwu District, Nanjing City, Jiangsu Province Applicant before: Wei Daping |
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Granted publication date: 20210101 Termination date: 20210416 |