CN108742809A - A kind of orthopaedics internal fixation screw application method - Google Patents

A kind of orthopaedics internal fixation screw application method Download PDF

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Publication number
CN108742809A
CN108742809A CN201810620809.2A CN201810620809A CN108742809A CN 108742809 A CN108742809 A CN 108742809A CN 201810620809 A CN201810620809 A CN 201810620809A CN 108742809 A CN108742809 A CN 108742809A
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China
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nut
twisting structure
screw
twisting
cleaning plant
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CN201810620809.2A
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Chinese (zh)
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梁兆国
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Individual
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Priority to CN201810620809.2A priority Critical patent/CN108742809A/en
Publication of CN108742809A publication Critical patent/CN108742809A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/683Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8605Heads, i.e. proximal ends projecting from bone
    • A61B17/861Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • A61B17/8615Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8685Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/92Impactors or extractors, e.g. for removing intramedullary devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B2017/564Methods for bone or joint treatment

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Neurology (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention belongs to a kind of orthopaedics Internal fixation technology field more particularly to orthopaedics internal fixation screw, device for fetching nail and method, screw of the present invention includes the nut that screwed screw rod is connected with screw rod end, and the nut includes:First nut and the second nut, the first twisting structure and the second twisting structure are respectively arranged on first nut and the second nut, thus structure, it may be implemented when being fastened using the screw, using the second twisting structure as the twisting structure of screw entirety, screwdriver is set to stay in the second twisting structure the damage of twisting structure, when being taken out to screw, second nut can be removed, make twisting structure of the first undamaged twisting structure as screw entirety, the second nut removed simultaneously takes away muscle and scar tissue, solves impaired twisting structure, the problem of muscle scar tissue of growth is easy to cause stripped thread situation, improve the primary taking-up success rate of internal fixation screw.

Description

A kind of orthopaedics internal fixation screw application method
Technical field
The invention belongs to orthopaedics Internal fixation technology field more particularly to a kind of orthopaedics internal fixation screw application methods.
Background technology
In the medical field, for fracture patient, generally use Internal fixation technology, by fixed plate and screw by fractures Position is attached fixation, after fracture healing, is taken out fixed plate and screw by operation;And when taking out screw, by In being screwed screw by screwdriver in mounting screw, screwdriver inevitably causes centainly the twisting structure of screw Damage, make the twisting structure of screw that a degree of deformation occur, the twisting structure of deformation had occurred and that when taking out screw Can connect with screwdriver it is insecure, be easy to cause twisting structure destroys completely occur cunning and screw can not be taken out;Simultaneously because bone Healing at folding can cause soft tissue around screw and poroma to the package of screw, and the twisting structure on screw is made to be filled, It is easy to when with screw driver, such as number of patent application:201620398597.4 a kind of bone surgery nail remover, It realization is clamped to screw cap moves back nail by the way that clamp is arranged on existing screwdriver, but since screw cap is smaller, the folder of clamp Tightly it is easy to fall off;The existing internal fixation screw for stripped thread usually uses skidding extractor first, and tapping skidding with bone hammer takes Go out device, the lower end of skidding extractor is made to be embedded in screw, then screw is taken out in rotation counterclockwise, may due to being tapped Damage is caused to lead to secondary fracture in affected part, if skidding extractor could not take out screw, it is necessary to be destroyed using alloy bit Nut captures the exposed part of screw rod using the three-jaw structure of drill chuck after removing fixed plate, rotates counterclockwise Screw is taken out, the process for destroying nut will produce metal fragment, clast can be made to remain in human body if safeguard procedures are bad, such as Fruit hand drill could not take out screw, it is necessary to destroy the bone tissue around screw rod using trepan, screw rod be then taken out, if bolt Primary to take out failure, secondary removing method can cause to damage to patient, therefore, how ensure the primary of orthopaedics internal fixation screw It takes out successfully, becomes urgent problem to be solved.
Invention content
The present invention overcomes above-mentioned the deficiencies in the prior art, to ensure that once taking out for fixed internal fixation screw is successfully general Rate provides a kind of orthopaedics internal fixation screw, device for fetching nail and application method.
Technical scheme of the present invention:A kind of orthopaedics internal fixation screw, the screw include screwed screw rod and screw rod The nut of end connection, nut lower end are provided with arc angling, and the nut includes:First nut and the second nut, the first spiral shell The first twisting structure and the second twisting structure, the first twisting structure and the second twisting are respectively arranged on cap and the second nut Structure is interior twisting structure, and projection of the second twisting structure on screw axis direction can fall completely within the first twisting Structure is in the projection on screw axis direction, and there are interlayers between the first twisting structure and the second twisting structure, for absorbing Screwdriver is damaged caused by the second twisting structure when the screw being fixedly mounted inside, first nut, the second nut, One twisting structure and the second twisting structure are coaxially disposed with the screw, and first nut is fixedly connected with screw rod, described Second nut is arranged in the first twisting structure, and the second nut lower end is provided with the linkage section being inserted into the first twisting structure, the Two nut upper ends are provided with the convex section higher than the first nut upper surface, be provided on convex section extend radially outward it is outer The upper surface of edge, outer and first nut collectively forms the clevis of annular.
Preferably, the first twisting structure is identical with the groove profile of the second twisting structure.
Further, the first twisting structure and the second twisting structure are flat recess, cross recess, triangular groove, four directions The chamfered grooves such as slot, five, five claw slots, interior hex slot or plum blossom trough.
Preferably, the first twisting structure is different with the groove profile of the second twisting structure.
Further, when the groove profile of the first twisting structure is cross recess, the groove profile of the second twisting structure is flat recess; When the groove profile of the first twisting structure is triangular groove, the groove profile of the second twisting structure is flat recess or cross recess;Described first When the groove profile of twisting structure is four square groove, the groove profile of the second twisting structure is flat recess, cross recess or triangular groove;Described first pulls When the groove profile of knot structure is five equal chamfered grooves, the groove profile of the second twisting structure is flat recess, cross recess, triangular groove or four square grooves;Institute When the groove profile for stating the first twisting structure is interior hex slot, the groove profile of the second twisting structure is flat recess, cross recess, triangular groove, four Square groove or five equal chamfered grooves;When the groove profile of the first twisting structure is plum blossom trough, the groove profile of the second twisting structure is Y type grooves.
Preferably, using interference fit between the linkage section and the first twisting structure.
A kind of orthopaedics internal fixation screw withdrawing device, including:It plays clevis cleaning plant and plays cap device, described clevis is clear Managing device includes:The lower end of the cleaning plant body of rod, cleaning plant positioning head and cleaning plant shovel body, the cleaning plant body of rod is set Be equipped with cleaning plant positioning head, cleaning plant positioning head is rotatably connected on the cleaning plant body of rod, cleaning plant positioning head be with The twisting structure of second twisting respective outer side edges, cleaning plant positioning head carry out axially position, the cleaning to cleaning plant shovel body Device shovel body is arranged in the side of cleaning plant positioning head, and cleaning plant shovel body is connect with the cleaning plant body of rod;
Described cap device include:The upper end of fixed cylinder, fixed link, hook and lift lever, the fixed cylinder is provided with admittedly Fixed pole, fixed link is horizontally disposed, and the middle part of fixed link is connect with the fixed cylinder, support of the fixed link as hand palm part Part is provided with axial straight slot in fixed cylinder, and lift lever is provided in straight slot, and lift lever upper in the straight slot can glide Dynamic, the lifting member that lift lever refers to as hand four, the fixed cylinder, fixed link and lift lever are collectively formed clutches reality by hand The lift structure now promoted up and down;
The lift lever is connect by a vertical connecting rod with hook disk, and hook disk is arranged in the lower end of the fixed cylinder, And hook disk can slide up and down under the drive of lift lever in fixed cylinder, and spring is provided between hook disk and fixed cylinder, Spring applies downward active force to hook disk makes the lift structure be kept open, right on the lower face of the hook disk Title is provided with several hooks, and the crawl structure that can be embedded in clevis, the lower face of the fixed cylinder are provided on the hook There is lap, the supporting surface that lap takes out as the second nut with the upper surface of the first nut.
Preferably, the cleaning plant shovel body is connect by compressing structure with the cleaning plant body of rod, the compression knot Structure includes:Connecting rod for connecting cleaning plant shovel body and the cleaning plant body of rod and the elasticity for compressing cleaning plant shovel body Element.
Further, the upper end of the connecting rod and the cleaning plant body of rod are hinged, the lower end of connecting rod and cleaning plant Shovel body is fixedly connected, and spring or elastic string are provided between connecting rod and the cleaning plant body of rod.
Further, the upper end of the connecting rod is fixedly connected with the cleaning plant body of rod, the lower end of connecting rod and cleaning Device shovel body is fixedly connected, separated in connecting rod and connected by spring.
Preferably, the lower end of the hook disk has been provided with cap positioning head, playing cap positioning head is and the second twisting knot The twisting structure of structure cooperation.
Preferably, the fixed cylinder includes the first fixed cylinder and the second fixed cylinder, the first fixed cylinder and second is fixed Cylinder coaxial threaded connects, and is provided with the axially extending bore for accommodating the vertical connecting rod in first fixed cylinder, the hook disk is set It sets in the second fixed cylinder, and spring is provided between hook disk and the first fixed cylinder.
A kind of installation of orthopaedics internal fixation screw and removing method, include the following steps:
Step a:The linkage section of second nut is inserted into the first twisting structure of the first nut, makes the second nut and first Nut connects, the twisting structure using the second twisting structure as screw entirety;
Step b:The screw is screwed using the screwdriver with the second twisting structure matching, is completed interior fixed;
Step c:In removable screw, the muscle or incrustation of the second twisting inside configuration are cleared up;
Step d:It is screwed by screwdriver pair the second twisting structure, screw is taken out;
Step e:If step d can not take out screw, is cleared up playing clevis, will be cleared up using clevis cleaning plant is played Device positioning head is inserted into the second twisting structure and is positioned, and cleaning plant shovel body has been embedded in clevis, rotates cleaning plant The body of rod will play clevis by cleaning plant shovel body and clean out;
Step f:The second nut is taken out by playing cap device, will rise in cap device positioning head the second twisting structure of insertion and carry out Positioning, has been embedded in clevis by the hook of hook disk lower end, has clutched fixed link and lift lever by hand, lift lever is made to drive Hook disk rises, while fixed cylinder moves downward, and so that fixed cylinder lower face is contacted with the first nut and provides support, continues to clutch solid Fixed pole and lift lever are until the second nut is taken out;
Step g:Screw is taken out by the screwdriver to match with the first twisting structure.
Further, hand presses the second nut when by the first nut and the connection of the second nut in the step a, passes through The linkage section of second nut is connect with the interference fit of the first twisting structure of the first nut.
Further, in the step e clear position of cleaning plant shovel body further include the second nut convex section outside.
Further, the twisting to be matched by cleaning plant positioning cephalic par and the second twisting structure in the step e Structure is embedded in the positioning that the second twisting structure realizes horizontal position, and vertical side is realized by the axial length of cleaning plant positioning head To positioning.
Further, level trough on the first nut and vertical is embedded in by auxiliary jaw on subring in the step g Increase the bonding strength between screwdriver and the first twisting structure in slot.
Beneficial effects of the present invention are:
1) screw of the present invention includes the nut that screwed screw rod is connected with screw rod end, and nut lower end is provided with Arc angling, the nut include:First is respectively arranged on first nut and the second nut, the first nut and the second nut to pull It is twisted structure and the second twisting structure, thus structure, may be implemented, when being fastened using the screw, the second twisting structure to be made For the twisting structure of screw entirety, so that screwdriver is stayed in the second twisting structure the damage of twisting structure, carried out to screw When taking-up, the second nut can be removed, make twisting structure of the first undamaged twisting structure as screw entirety, tear open simultaneously The second nut removed takes away muscle and scar tissue, solves impaired twisting structure, the muscle scar tissue of growth is easy The problem of leading to stripped thread situation, improves the primary taking-up success rate of internal fixation screw.
2) the first nut of the invention is fixedly connected with screw rod, and second nut is arranged in the first twisting structure, and second Nut lower end is provided with the linkage section being inserted into the first twisting structure, and the second nut upper end is provided with higher than the first nut upper surface Convex section, be provided with the outer extended radially outward on convex section, outer and the upper surface of first nut are common Constitute annular plays clevis, and thus structure, may be implemented first twisting structure of second nut by linkage section and the first nut It is attached, while clevis has been set for removing the second nut, by the way that the second nut to be arranged to the twisting in the first nut In structure, the first twisting structure filling is avoided in muscle and scar tissue machine, while making the first twisting structure and the second twisting Structure distance on the axis direction of screw reduces, and avoids that stripped thread occurs between the first twisting structure and the second nut.
Description of the drawings
Fig. 1 is a kind of overall structure diagram of orthopaedics internal fixation screw;
Fig. 2 is a kind of front view of orthopaedics internal fixation screw;
Fig. 3 is a kind of vertical view of orthopaedics internal fixation screw;
Fig. 4 is the structural schematic diagram that a kind of orthopaedics internal fixation screw uses identical groove profile;
Fig. 5 is a kind of structural schematic diagram of orthopaedics internal fixation screw in the second twisting structural failure;
Fig. 6 is a kind of structural schematic diagram of orthopaedics internal fixation screw in specific implementation mode five;
Fig. 7 is a kind of structural schematic diagram of orthopaedics internal fixation screw in specific implementation mode six;
Fig. 8 is a kind of structural schematic diagram of orthopaedics internal fixation screw in specific implementation mode seven;
Fig. 9 is a kind of structural schematic diagram for playing clevis cleaning plant of orthopaedics internal fixation screw withdrawing device;
Figure 10 is a kind of structural schematic diagram for playing cap device of orthopaedics internal fixation screw withdrawing device;
Figure 11 is the first attachment structure schematic diagram of the cleaning plant shovel body in Fig. 9;
Figure 12 is second of attachment structure schematic diagram of the cleaning plant shovel body in Fig. 9;
Figure 13 is the first hook dish structure schematic diagram for playing cap device in Figure 10;
Figure 14 is the Section A-A schematic diagram in Figure 13;
Figure 15 is structural schematic diagram of the hook disk in Figure 13 in opening state;
Figure 16 is second of hook dish structure schematic diagram for playing cap device in Figure 10;
Figure 17 is structural schematic diagram of the hook disk in Figure 16 in opening state;
Figure 18 is to scheme a kind of structural schematic diagram of the pulling device of orthopaedics internal fixation screw withdrawing device;
In figure:The first nuts of 1-;The second nuts of 2-;3- plays clevis cleaning plant;4- plays cap device;5- pulling devices;11- First twisting structure;12- level troughs;13- vertical slots;14- the second nut fixing grooves;21- the second twisting structures;22- plays clevis; 23- blocks;24- the second nut fixed arms;25- third nuts;The 31- cleaning plant bodies of rod;32- cleaning plant positioning heads;33- is clear Manage device shovel body;41- fixed cylinders;42- fixed links;43- hook disks;44- lift levers;The 51- nail nipping bodies of rod;52- subrings;211- Second twisting structure of damage;The first fixed cylinders of 411-;The second fixed cylinders of 412-;431- compression plates;432- fixing grooves;433- steel Cord;521- auxiliary jaws.
Specific implementation mode
Below with reference to attached drawing, the present invention is described in detail:
Specific implementation mode one
In conjunction with shown in Fig. 1 to Fig. 3, a kind of orthopaedics internal fixation screw disclosed in the present embodiment, the screw includes carrying spiral shell The nut that the screw rod of line is connected with screw rod end, nut lower end are provided with arc angling, and screw is made to be connect with the inclined-plane in fixed plate Fixed plate is generated along bone axis direction towards the active force of fracture when touching, the nut includes:First nut 1 and second It is respectively arranged with the first twisting structure 11 and the second twisting structure 21 on nut 2, the first nut 1 and the second nut 2, described first Twisting structure 11 and the second twisting structure 21 are interior twisting structure, and the second twisting structure 21 is on screw axis direction Projection can fall completely within the first twisting structure 11 in the projection on screw axis direction, and the first twisting structure 11 and second is pulled There are interlayers between knot structure 21, and the second twisting of screwdriver pair structure 21 causes when the screw is fixedly mounted inside for absorbing Damage, 21 to the first twisting structure 11 of the second twisting structure is small, and the second twisting knot can be completely covered in the first twisting structure 11 Structure 21, makes between two twisting structures that there are interlayer, first nut 1, the second nut 2, the first twisting structures 11 and second Twisting structure 21 is coaxially disposed with the screw, and first nut 1 is fixedly connected with screw rod, and second nut 2 is arranged In the first twisting structure 11,2 lower end of the second nut is provided with the linkage section being inserted into the first twisting structure 11, the second nut 2 Upper end is provided with the convex section higher than 1 upper surface of the first nut, and the outer extended radially outward, outer are provided on convex section The clevis 22 of annular is collectively formed with the upper surface of first nut 1.
When fixed in being carried out using screw, using the second twisting structure 21 as the twisting structure of screw entirety, pass through spiral shell When silk knife screws screw, screwdriver is to the damage of screw by between the first twisting structure 11 and the second twisting structure 21 Interlayer absorbs, and to avoid the damage of the first twisting structure 11, the second nut 2 is arranged in the first twisting structure 11, by first Twisting structure 11 is filled up, and the protective effect to the first twisting structure 11 is played, and on the one hand avoids the damage of screw driver, on the one hand Avoid the muscle and the taking-up for entering and influencing screw of forming a scab that healing is grown;
When taking out screw, there are following two modes
First using the second twisting structure 21 as the twisting structure of screw entirety, if the second twisting structure 21 fails, pass through It plays clevis 22 to remove the second nut 2, at this time using the first twisting structure 11 as the twisting structure of screw entirety, passes through screwdriver Screw is taken out, since the first twisting structure 11 is without damage, and meanwhile it is internal also without muscle or scar tissue, to improve The primary success rate for taking nail;
Or when taking out screw, clevis 22 is first passed through and has removed the second nut 2, using the second twisting structure 21 as spiral shell The whole twisting structure of nail is removed, since the second twisting structure 21 has been damaged when mounted, the second twisting when removing Inevitably cleaning is not thorough in structure 21, causes stripped thread probability to rise, if well damage will be corrupted to the first twisting knot Structure 11 first removes the second nut 2 when taking out screw, avoids the first twisting structure 11 impaired, ensures the success for once taking nail Rate.
Specific implementation mode two
In conjunction with shown in Fig. 4, the present embodiment be on the basis of specific implementation mode one, specifically, the first twisting knot Structure 11 is identical with the groove profile of the second twisting structure 21.
The first twisting structure 11 and the second twisting structure 21 are flat recess, cross recess, triangular groove, four square grooves, five Equal chamfered grooves, five claw slots, interior hex slot or plum blossom trough.
When screwing, power is transferred to the second twisting structure 21 by screwdriver end, then is transferred to first by interlayer and pulls It is twisted the transmission that structure 11, the first twisting structure 11 and the second twisting structure 21 meet power using identical groove profile, is formed simultaneously thickness Spend the damage that identical interlayer is used for absorbing the first twisting of screwdriver pair structure 11;
Specific implementation mode three
In conjunction with shown in Fig. 5, the present embodiment be on the basis of specific implementation mode one, specifically, the first twisting knot Structure 11 is different with the groove profile of the second twisting structure 21.
When the groove profile of the first twisting structure 11 is cross recess, the groove profile of the second twisting structure 21 is flat recess;It is described When the groove profile of first twisting structure 11 is triangular groove, the groove profile of the second twisting structure 21 is flat recess or cross recess;Described first When the groove profile of twisting structure 11 is four square groove, the groove profile of the second twisting structure 21 is flat recess, cross recess or triangular groove;Described When the groove profile of one twisting structure 11 waits chamfered grooves for five, the groove profile of the second twisting structure 21 is flat recess, cross recess, triangular groove or four Square groove;When the groove profile of the first twisting structure 11 is interior hex slot, the groove profile of the second twisting structure 21 is flat recess, cross The chamfered grooves such as slot, triangular groove, four square grooves or five;When the groove profile of the first twisting structure 11 is plum blossom trough, the second twisting structure 21 Groove profile be Y type grooves.
When the first twisting structure 11 is with 21 groove profile difference of the second twisting structure, the angle number using the first twisting structure 11 is big In the second twisting structure 21, ensure that 21 groove profile rotary motion trace of the second twisting structure is fallen completely within inside the first twisting structure 11, by It is more than the angle number of the second twisting structure 21 in the angle number of the first twisting structure 11, interlayer is made to form the different region of thickness, it is thicker Part form rib structure, to strengthen the intensity of interlayer, while the second twisting under the premise of not influencing stress and transmitting Structure 21 is fallen completely with the track that symmetrical centre rotates in the first twisting structure 11 so that is pressed from both sides when the second twisting 21 stripped thread of structure Layer can fully absorb damage, and the second twisting structure 211 of damage will not damage the first twisting structure 11, Jin Erti It is high to take the successful probability of nail;
Specific implementation mode four
The present embodiment be on the basis of specific implementation mode one, specifically, the linkage section and the first twisting structure 11 Between using interference fit.
Provide a kind of connection type of 1 and second nut 2 of dismountable first nut;
Specific implementation mode five
In conjunction with shown in Fig. 6, the present embodiment be on the basis of specific implementation mode one, specifically, first nut 1 Upper surface is provided with several level troughs 12, several level troughs 12 using 1 axis of the first nut as the radial arrangement in the center of circle, and Level trough 12 is connected to the outer of the first twisting structure 11 and the first nut 1, the company of the outer and level trough 12 of first nut 1 The place of connecing is provided with vertical slots 13, and block 23 is provided in vertical slots 13 and fills up vertical slots 13, the lateral wall profile of block 23 with The outer outline of first nut 1, and the upper end of block 23 is connect by connecting rod with the second nut 2, connecting rod setting exists In the level trough 12;
Nail-fetching device embedded groove may be used when being taken out to screw by the level trough 12 and vertical slots 13 of setting Inside screwed, due to vertical slots 13 force position compared with the first twisting structure 11 with screw axis distance farther out, can have more The big arm of force improves the probability that screw takes out, while being filled up level trough 12, vertical slots 13 by block and connecting rod, avoids Muscle and scar tissue enter, while increasing by the first nut 1 and second in block and connecting rod insertion level trough 12, vertical slots 13 The second nut 2 is fixed in the bonding strength of nut 2;
Specific implementation mode six
In conjunction with shown in Fig. 7, the present embodiment be on the basis of specific implementation mode one, specifically, first nut 1 Side is provided with the second nut fixing groove 14 of annular, several the second nuts are provided on the convex section of first nut 1 Fixed arm 24, several the second nut fixed arms 23 are radially distributed using the axis of the second nut 2 as the center of circle, second spiral shell Cap fixed arm 24 includes:Positioned at 1 upper surface of the first nut horizontal segment, be adjacent to the vertical section and embedded the of 1 side wall of the first nut Fixed section in two nuts, 2 fixing groove forms, and is provided with and discontiguous of 1 upper surface of the first nut cap on the horizontal segment Section;
It will be fixed between second nut 2 and the first nut 1 by several the second nut fixed arms 24, due to making The first nut 1 and the second nut 2 will not be fixed in the axial direction by prodigious active force, therefore by the second nut in Easier, while the fixation side that making between the linkage section of the second nut 2 and the first nut 1 need not be additional is fixed in arm 24 Formula, is convenient for the dismounting of the second nut 2, while cap section has been arranged on the second nut fixed arm 24, convenient for tearing open for the second nut 2 It removes;
Specific implementation mode seven
In conjunction with shown in Fig. 8, the present embodiment is on the basis of specific implementation mode one, specifically, in a kind of orthopaedics Fixing screws further include third nut 25, and the lateral wall upper semisection of first nut 1 is provided with screw thread, the third nut 25 Including the side cover body that horizontal upper cover body and upper cover body edge extend downwardly, upper cover body and side cover body collectively form closed lid Structure is provided with the screw thread being connect with the first nut 1 on the inner wall of the side cover body, and outer pull is provided on the third nut 25 It is twisted structure;
In mounting screw, the twisting structure for being used as screw entirety by the second twisting structure 21 is being installed into screwing Third nut 25 is mounted on by outer twisting structure on the first nut 1, is carried out by the second nut of third nut pair 2 by Cheng Hou It blocks, prevents the muscle of growth or scar tissue from entering the second twisting structure 21;
It when taking out screw, first passes through outer twisting structure and removes third nut 25, then remove the second nut 2 by One twisting structure 11 takes out screw, or is directly taken out screw using the second twisting structure 21;
Specific implementation mode eight
A kind of orthopaedics internal fixation screw withdrawing device disclosed in the present embodiment, described device be specific implementation mode one, Two, it is realized on a kind of orthopaedics internal fixation screw described in three, four, five, six or seven, including:It plays clevis cleaning plant 3 and plays cap Device 4, in conjunction with shown in Fig. 9, described clevis cleaning plant 3 includes:The cleaning plant body of rod 31, cleaning plant positioning head 32 and clear Device shovel body 33 is managed, the lower end of the cleaning plant body of rod 31 is provided with cleaning plant positioning head 32, cleaning plant positioning head 32 It is rotatably connected on the cleaning plant body of rod 31, cleaning plant positioning head 32 is inserted into the cleaning plant body of rod by the body of rod and realizes rotation Connection, and fixed by magnetic patch, cleaning plant positioning head 32 is the twisting structure coordinated with the second twisting structure 21, cleaning plant Positioning head 32 carries out axially position to cleaning plant shovel body 33, and the cleaning plant shovel body 33 is arranged in cleaning plant positioning head 32 Side, and cleaning plant shovel body 33 is connect with the cleaning plant body of rod 31;By the way that cleaning plant shovel body 33 is embedded in In clevis 22, rotation cleaning plant shovel body 33 will play clevis 22 and clear up, convenient for being taken the second nut 2 by playing clevis 22 Go out;
In conjunction with shown in Figure 10, described cap device 4 includes:Fixed cylinder 41, fixed link 42, hook disk 43 and lift lever 44, The upper end of the fixed cylinder 41 is provided with fixed link 42, and fixed link 42 is horizontally disposed, the middle part of fixed link 42 and the fixed cylinder 41 connect, support element of the fixed link 42 as hand palm part, and axial straight slot is provided in fixed cylinder 41, is arranged in straight slot There are lift lever 44, lift lever 44 that can be slided up and down in the straight slot, the lifting member that lift lever 44 refers to as hand four, institute It states fixed cylinder 41, fixed link 42 and lift lever 44 and collectively forms the lift structure clutched by hand and realize promotion up and down;
The lift lever 44 is connect by a vertical connecting rod with hook disk 43, and hook disk 43 is arranged in the fixed cylinder 41 Lower end, and hook disk 43 can slide up and down under the drive of lift lever 44 in fixed cylinder 41, hook disk 43 and fixed cylinder Spring is provided between 41, spring applies downward active force to hook disk 43 makes the lift structure be kept open, institute Several hooks that have been arranged symmetrically on the lower end face for stating hook disk 43, are provided with the crawl that can be embedded in clevis 22 on the hook Structure, the lower face of the fixed cylinder 41 and the upper surface of the first nut 1 have lap, and lap is as the second nut 2 supporting surfaces taken out.
Symmetrically arranged hook can be embedded in clevis 22 on hook disk 43, in the second nut 2 of lifting upwards, make nut Upper Multipoint Uniform stress, avoiding levering up 22 single-point of clevis using other tools has been caused clevis 22 to damage and can not taken out, There is lap, lap to be taken out as the second nut 2 for the lower face of fixed cylinder 41 and the upper surface of the first nut 1 simultaneously Supporting surface, make hook disk 43 upwards the second nut 2 of lifting when reaction force, act on the by the lower face of fixed cylinder 41 On the upper surface of one nut 1, the benefit one of such setting is more stable during making lifting, the contact surface of 41 lower end of fixed cylinder Play the role of positioning while reaction force is provided, keep active force that hook disk 43 lifts upwards always with the axis of screw Line is parallel, another benefit is the moment taken out in the second nut 2, the anti-work of lifting force and fixed cylinder 41 to the second nut 2 Firmly disappear simultaneously, it is more stable when taking out the second nut 2 in this way;
Specific implementation mode nine
The present embodiment is on the basis of specific implementation mode eight, and specifically, the cleaning plant shovel body is tied by compressing Structure is connect with the cleaning plant body of rod, and the compressing structure includes:Company for connecting cleaning plant shovel body and the cleaning plant body of rod Bar and elastic element for compressing cleaning plant shovel body.Make cleaning plant shovel body into being attached to clevis 22 by compressing structure It is interior, keep cleaning more thorough, while changing cleaning dress by compressing structure when alloing cleaning plant shovel body to be embedded in clevis 22 The radial distance of shovel body and the cleaning plant body of rod is set, convenient for cleaning plant shovel body to be embedded in clevis 22, is adapted to simultaneously Different size of clevis 22;
In conjunction with shown in Figure 11, specifically, the upper end of the connecting rod is hinged with the cleaning plant body of rod, the lower end of connecting rod It is fixedly connected with cleaning plant shovel body, spring or elastic string is provided between connecting rod and the cleaning plant body of rod.
In conjunction with shown in Figure 12, specifically, the upper end of the connecting rod is fixedly connected with the cleaning plant body of rod, connecting rod Lower end is fixedly connected with cleaning plant shovel body, separated in connecting rod and connected by spring.
Specific implementation mode ten
The present embodiment is on the basis of specific implementation mode eight, and specifically, the lower end of the hook disk 43 has been provided with Cap positioning head, it is the twisting structure coordinated with the second twisting structure 21 to play cap positioning head.
It rises in the cylinder groove on cap positioning head upper end insertion hook disk 43, and is connected by magnetite, form rotation connection, lead to Crossed the axial position of cap positioning head positioning hook and to play clevis 22 corresponding, by 22 positioning device of clevis make hook disk 43 and The axis coaxle of screw;
Specific implementation mode 11
In conjunction with shown in Figure 10, the present embodiment is on the basis of specific implementation mode eight, and specifically, the fixed cylinder 41 is wrapped The first fixed cylinder 411 and the second fixed cylinder 412 are included, the first fixed cylinder 411 is connected with 412 coaxial threaded of the second fixed cylinder, described The axially extending bore for accommodating the vertical connecting rod is provided in first fixed cylinder 411, the hook disk 43 is arranged in the second fixed cylinder In 412, and spring is provided between hook disk 43 and the first fixed cylinder 411.
Repair formula is being installed as by removing the second fixed cylinder 41 and the first fixed cylinder 41, is being easy for installation and maintenance;
Specific implementation mode 12
The present embodiment is specifically, to provide two kinds of claw grabs on the basis of specific implementation mode eight and play clevis 22 Mode;
In conjunction with shown in Figure 13-Figure 15,43 top of the hook disk is additionally provided with compression plate 431, and compression plate 431 is socketed in institute On the vertical connecting rod stated, spring, the compression plate 431 and hook disk are provided between compression plate 431 and the fixed cylinder 41 The upper semisection of 43 pairs of hooks is clamped, while the inner wall of the side of hook disk 43 and fixed cylinder 41 is under the hook Half section is clamped, and the angle of the upper semisection of the hook and the lower semisection of hook is more than 90 °, and the lower semisection of hook is provided with small Hook is provided with the horn mouth expanded outwardly on the lower end inner wall of the fixed cylinder 41;
Under the action of the spring, hook disk 43 moves downward, and compression plate 431 compresses the upper semisection of hook with hook disk 43, So that hook is rotated, is contacted at this time with horn mouth inner wall on the outside of the lower semisection of hook, bell-mouthed inner wall plays limit to hook Effect, makes hook open, and after hook disk 43 is contacted with the second nut 2, fixed cylinder 41 moves downward, from the outer of hook lower semisection Hook is squeezed in lateral, so that hook is rotated, while the small hook below hook has been embedded in clevis 22, and the second nut 2 is clamped;
In conjunction with shown in Figure 16 and Figure 17, there are two inclined fixing groove 432, each fixing grooves for setting on the hook disk 43 The steel wire rope 433 that an annular is closed is both provided in 432, two steel wire ropes 433 are under the guiding of fixing groove 432 in intersection cloth It sets, and so that the distance of two 433 lower ends of steel wire rope is less than the straight of 2 upper surface of the second nut under the guiding of fixing groove 432 Diameter, there are gap between two 433 lower ends of steel wire rope and hook disk 43,433 lower end of steel wire rope of closure can cover hang over it is described Play the crawl structure that hook is formed in clevis 22;
Specific implementation mode 13
In conjunction with shown in Figure 18, the present embodiment is on the basis of specific implementation mode eight, specifically, in a kind of orthopaedics Fixing screws withdrawing device further includes pulling device 5, and pulling device 5 includes the nail nipping body of rod 51, and the lower end of the nail nipping body of rod 51 is arranged There is the twisting structure coordinated with the first twisting structure 11, is additionally provided with subring 52 on the nail nipping body of rod 51, subring 52 is socketed in On the nail nipping body of rod 51, and spring is provided between subring 52 and the nail nipping body of rod 51, the lower face of the subring 52 is set It is equipped with the auxiliary jaw 521 of several and level trough 12 and the clamping of vertical slots 13 on first nut 1;
After taking out the second nut 2, coordinated by the twisting structure and the first twisting structure 11 of 51 lower end of the nail nipping body of rod, By under the action of the spring, making the auxiliary jaw 521 on subring 52 be embedded in level trough 12 and vertical slots 13 on the first nut 1 It is interior, due to vertical slots 13 force position compared with the first twisting structure 11 with screw axis distance farther out, can have the arm of force of bigger, Improve the probability that screw takes out;
Specific implementation mode 14
A kind of orthopaedics internal fixation screw application method disclosed in the present embodiment, the method be specific implementation mode one, Two, a kind of orthopaedics internal fixation screw described in three, four, five, six or seven and specific implementation mode eight, nine, ten, 11,12 or It realizes, includes the following steps in a kind of orthopaedics internal fixation screw withdrawing device described in 13:
Step a:The linkage section of second nut 2 is inserted into the first twisting structure 11 of the first nut 1, makes the second nut 2 It is connect with the first nut 1, the twisting structure using the second twisting structure 21 as screw entirety;
Step b:The screw is screwed using with 21 matched screwdriver of the second twisting structure, is completed interior fixed;
Step c:In removable screw, to inside the second twisting structure 21 muscle or incrustation clear up;
Step d:It is screwed by the second twisting of screwdriver pair structure 21, screw is taken out;
Step e:If step d can not take out screw, cleared up using 22 cleaning plant of clevis is played playing clevis 22, it will Cleaning plant positioning head is inserted into the second twisting structure 21 and is positioned, and cleaning plant shovel body has been embedded in clevis 22, rotates The cleaning plant body of rod will play clevis 22 by cleaning plant shovel body and clean out;
Step f:The second nut 2 is taken out by playing cap device, cap device positioning head will be played and be inserted into the second twisting structure 21 It is positioned, has been embedded in clevis 22 by the hook of 43 lower end of hook disk, fixed link 42 and lift lever 44 are clutched by hand, Make lift lever 44 that hook disk 43 be driven to rise, while fixed cylinder 41 moves downward, and 41 lower face of fixed cylinder is made to be connect with the first nut 1 It touches and support is provided, continue to clutch fixed link 42 and lift lever 44 until the second nut 2 is taken out;
Step g:Screw is taken out by the screwdriver to match with the first twisting structure 11.
Specific implementation mode 15
The present embodiment is on the basis of specific implementation mode 14, specifically, by the first nut 1 in the step a Hand presses the second nut 2 when being connected with the second nut 2, passes through the first twisting of the linkage section and the first nut 1 of the second nut 2 The interference fit of structure 11 connects.
Specific implementation mode 16
The present embodiment be on the basis of specific implementation mode 14, specifically, cleaning plant shovel body in the step e Clear position further includes the outside of 2 convex section of the second nut.Clevis 22 will be played and 2 side wall of the second nut is cleared up.
Specific implementation mode 17
The present embodiment specifically, is determined by cleaning plant in the step e on the basis of specific implementation mode 14 Potential head end is embedded in the positioning that the second twisting structure 21 realizes horizontal position with the twisting structure that the second twisting structure 21 matches, The positioning of vertical direction is realized by the axial length of cleaning plant positioning head.And then ensures cleaning plant shovel body and play clevis 22 Relative position, convenient for rise a clevis 22 clear up.
Specific implementation mode 18
The present embodiment specifically, is incited somebody to action by pulling device in the step g on the basis of specific implementation mode 14 Screw takes out, and increases in the level trough 12 and vertical slots 13 being embedded on the first nut 1 by the auxiliary jaw on pulling device subring Add the bonding strength between screwdriver and the first twisting structure 11.
Specific implementation mode 19
The present embodiment specifically, is determined by playing cap device in the step f on the basis of specific implementation mode 14 Potential head end is embedded in the positioning that the second twisting structure 21 realizes horizontal position with the twisting structure that the second twisting structure 21 matches, Axial length by playing cap device positioning head realizes the positioning of vertical direction, passes through the lacking from 2 edge of the second nut by hook It is inserted at mouthful, is rotated further by hook disk 43, by having made cap device positioning head be rotatablely connected with hook disk 43, make the crawl on hook Structure has been embedded in clevis 22, while by that will play cap device positioning head.
By the way that notch is arranged on playing clevis 22, allows hook clevis 22 from entering indentation, there, make hook and second The connection structure of nut 2 simplifies.
Specific implementation mode 20
The present embodiment specifically, is determined by playing cap device in the step f on the basis of specific implementation mode 14 Potential head end is embedded in the positioning that the second twisting structure 21 realizes horizontal position with the twisting structure that the second twisting structure 21 matches, Axial length by playing cap device positioning head realizes the positioning of vertical direction, rotatable by the way that two are arranged on hook disk 43 Hook, under the action of the spring, hook disk 43 moves downward, and compression plate 431 and hook disk 43 compress the upper semisection of hook, make Hook rotates, and is contacted at this time with horn mouth inner wall on the outside of the lower semisection of hook, and bell-mouthed inner wall plays limit to hook and makees With making hook open, after hook disk 43 is contacted with the second nut 2, fixed cylinder 41 moves downward, from the outside of hook lower semisection Hook is inwardly squeezed, so that hook is rotated, while the small hook below hook has been embedded in clevis 22, and the second nut 2 is clamped;
Specific implementation mode 21
The present embodiment specifically, is determined by playing cap device in the step f on the basis of specific implementation mode 14 Potential head end is embedded in the positioning that the second twisting structure 21 realizes horizontal position with the twisting structure that the second twisting structure 21 matches, Axial length by playing cap device positioning head realizes the positioning of vertical direction, is made by two annular wire ropes arranged in a crossed manner For hook, the position of steel wire rope is fixed by the fixing groove on hook disk 43, makes the lower end of two steel wire ropes apart from small Diameter in 2 upper surface of the second nut, when hook disk 43 is compressed to the second nut 2, the lower ends of two steel wire ropes is to The outer Slideslip of two nuts 2 clamps the second nut 2 until the lower end of two steel wire ropes has been fallen into clevis 22.
Above example is only to the exemplary description of this patent does not limit its scope of protection, people in the art Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.

Claims (5)

1. a kind of orthopaedics internal fixation screw application method, which is characterized in that include the following steps:
Step a:The linkage section of second nut (2) is inserted into the first twisting structure (11) of the first nut (1), makes the second nut (2) it is connect with the first nut (1), the twisting structure using the second twisting structure (21) as screw entirety;
Step b:The screw is screwed using with second twisting structure (21) matched screwdriver, is completed interior fixed;
Step c:In removable screw, the internal muscle of the second twisting structure (21) or incrustation are cleared up;
Step d:It is screwed by screwdriver pair the second twisting structure (21), screw is taken out;
Step e:If step d can not take out screw, cleared up using clevis cleaning plant (3) is played playing clevis (22), it will Cleaning plant positioning head (32) is inserted into the second twisting structure (21) and is positioned, and cleaning plant shovel body (33) has been embedded in clevis (22) in, the rotation cleaning plant body of rod (31) will play clevis (22) by cleaning plant shovel body (33) and clean out;
Step f:The second nut (2) is taken out by playing cap device (4), cap device (4) positioning head will be played and be inserted into the second twisting structure (21) it is positioned in, has been embedded in clevis (22) by the hook of hook disk (43) lower end, fixed link is clutched by hand (42) and lift lever (44), make lift lever (44) that hook disk (43) be driven to rise, while fixed cylinder (41) moves downward, and makes fixation Cylinder (41) lower face contact offer support with the first nut (1), continues to clutch fixed link (42) and lift lever (44) up to by the Two nuts (2) take out;
Step g:Screw is taken out by the screwdriver to match with the first twisting structure (11).
2. a kind of orthopaedics internal fixation screw application method according to claim 1, which is characterized in that in the step a Hand presses the second nut (2) when first nut (1) and the second nut (2) are connected, by the linkage section of the second nut (2) with The interference fit of first twisting structure (11) of the first nut (1) connects.
3. a kind of orthopaedics internal fixation screw application method according to claim 1, which is characterized in that clear in the step e The clear position of reason device shovel body (33) further includes the outside of the second nut (2) convex section.
4. a kind of orthopaedics internal fixation screw application method according to claim 1, which is characterized in that lead in the step e It crosses cleaning plant positioning head (32) end and is embedded in the second twisting structure with the twisting structure that the second twisting structure (21) matches (21) positioning for realizing horizontal position, the positioning of vertical direction is realized by the axial length of cleaning plant positioning head (32).
5. a kind of orthopaedics internal fixation screw application method according to claim 1, which is characterized in that lead in the step g Cross in the level trough (12) and vertical slots (13) that auxiliary jaw on subring (52) is embedded on the first nut (1) increase screwdriver and Bonding strength between first twisting structure (11).
CN201810620809.2A 2018-06-15 2018-06-15 A kind of orthopaedics internal fixation screw application method Withdrawn CN108742809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810620809.2A CN108742809A (en) 2018-06-15 2018-06-15 A kind of orthopaedics internal fixation screw application method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810620809.2A CN108742809A (en) 2018-06-15 2018-06-15 A kind of orthopaedics internal fixation screw application method

Publications (1)

Publication Number Publication Date
CN108742809A true CN108742809A (en) 2018-11-06

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Country Link
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Application publication date: 20181106