CN106963469A - A kind of Combined type screw of automatic distraction reduction sclerite - Google Patents
A kind of Combined type screw of automatic distraction reduction sclerite Download PDFInfo
- Publication number
- CN106963469A CN106963469A CN201710201444.5A CN201710201444A CN106963469A CN 106963469 A CN106963469 A CN 106963469A CN 201710201444 A CN201710201444 A CN 201710201444A CN 106963469 A CN106963469 A CN 106963469A
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- screw
- section
- sclerite
- threaded connection
- optical axis
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- 230000009467 reduction Effects 0.000 title claims abstract description 16
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 208000010392 Bone Fractures Diseases 0.000 description 6
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000459 calcaneus Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 210000002758 humerus Anatomy 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
-
- 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
-
- 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
- A61B17/683—Internal 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
-
- 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
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B2017/681—Alignment, compression, or distraction mechanisms
Landscapes
- 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 proposes a kind of Combined type screw of automatic distraction reduction sclerite, including inner screw, is connected to fractured near end block and is sleeved on the screw sleeve on inner screw, the adjustment part being connected with inner screw；Inner screw includes optical axis section and external diameter is more than the first threaded connection section of optical axis section, and its first threaded connection section is stretched into and is threaded in distal bone folded block；Screw sleeve includes hollow sleeve pipeline section and the second threaded connection section, and it is sleeved on the optical axis section outside of inner screw towards the hollow sleeve pipeline section of distal bone folded block side, and its second threaded connection section is threaded on fractured near end block.The present invention is simple in construction, it is reasonable in design, it is possible to achieve two sclerites are strutted and freely adjusted, the need for difference, can targetedly it be operated, it is very convenient, favourable patients ' recovery, and, tail cap structure and the screw sleeve of setting are brought into close contact, Bone Ingrowth is avoided, knockout screw more facilitates, and reduces the pain of patient.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly, to a kind of Combined screw of automatic distraction reduction sclerite
Nail.
Background technology
After the fracture of human body a part such as calcaneum, condyle of femur, condyle of humerus etc., often there is fracture compression and change, sclerite
Between mutually extruding after distance diminish, in surgical procedure, it is often necessary to utilize instrument distraction reduction, by fracture site pressure
Contracting is partially separated, and it is recovered normal physiology dissection contraposition.In current interior fixed solution, the fixed form of conventional bolt
Belong to pressurization to fix, for carrying out pressurization fixation between two sclerite sections, promote the distance between sclerite to diminish, it is existing
There is the screw fixation method of technology, it is impossible to which distance increases between realizing sclerite, the need for can not being more directed to difference, to sclerite
The distance between carry out distance to a declared goal accurate adjustment, need badly and make improvements.
The content of the invention
It is contemplated that overcoming the above-mentioned defect deposited in the prior art, a kind of combination of automatic distraction reduction sclerite is proposed
Formula screw.
The technical proposal of the invention is realized in this way：
A kind of Combined type screw of automatic distraction reduction sclerite, including it is connected into fracture of distal through fractured near end block screw thread
The inner screw of block, it is connected to fractured near end block and is sleeved on the screw sleeve on inner screw, the adjustment part being connected with inner screw；It is described
Inner screw includes optical axis section and external diameter is more than the first threaded connection section of optical axis section, and its first threaded connection section is stretched into and screw thread
It is connected in distal bone folded block；The screw sleeve includes hollow sleeve pipeline section and the second threaded connection section, and it is towards distal bone folded block
The hollow sleeve pipeline section of side is sleeved on the optical axis section outside of the inner screw, and its second threaded connection section is threaded in near-end
On sclerite；The adjustment part includes tail cap and the 3rd threaded joints, and tail cap medial surface props up screw sleeve away from fracture of distal
The end face of block side, the 3rd threaded connection section stretches into and is threaded in one end of the proximally facing sclerite of inner screw；The light
One side end face of the proximally facing sclerite of shaft part and being all provided with different from towards a side end face of distal bone folded block for the screw sleeve
There is interior hexagonal hollow；The optical axis section is provided with the 4th threaded joints being connected with the threaded joints of adjustment part the 3rd.
Further, the external diameter of the hollow sleeve pipeline section is less than the external diameter of the described first threaded connection section, in first spiral shell
Plane where line linkage section is provided with blocking surface, the blocking surface towards one end of the hollow sleeve pipeline section and the inner screw axis side
To vertical.
Further, the external diameter of the second threaded connection section is more than the external diameter of the hollow sleeve pipeline section.
Further, the external diameter of the second threaded connection section is equal to the external diameter of the first threaded connection section.
Further, the end face outside of the adjustment part is provided with inner hexagonal hole.
Further, it is slidably matched between hollow sleeve pipeline section and the optical axis section.
Further, there is gap between hollow sleeve pipeline section inwall and the optical axis section outer wall.
Further, the tail cap medial surface be provided with taper thread, have steel plate on the outside of screw sleeve, set on the steel plate with tail cap
The lock hole of taper thread matching, steel plate medial surface props up the screw sleeve end face.
Above-mentioned technical proposal is employed, beneficial effects of the present invention are：
The present invention is simple in construction, reasonable in design, it is possible to achieve two sclerites are strutted and freely adjusted, for different need
Will, can targetedly it be operated, very convenient, favourable patients ' recovery, also, the tail cap structure and screw sleeve that set are close
Laminating, it is to avoid Bone Ingrowth, knockout screw more facilitates, and reduces the pain of patient.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of inner screw in the present invention；
Fig. 3 is the structural representation of screw sleeve in the present invention；
Fig. 4 for the present invention in without helicitic texture adjustment part structural representation；
Fig. 5 for the present invention in be threaded structure adjustment part structural representation；
Fig. 6 is the structural representation of light plate of the present invention.
Wherein：1- fractured near end blocks；2- distal bone folded blocks；3- inner screws；4- screw sleeves；5- adjustment parts；6- optical axises section；7-
First threaded connection section；8- hollow sleeve pipeline sections；9- second is threadedly coupled section；10- tail caps；11- the 3rd is threadedly coupled section；12- hinders
Block face；13- lock holes；14- steel plates；The threaded joints of 15- the 4th；Hexagonal is hollow in 16- first；Hexagonal is hollow in 17- second；
Hexagonal is hollow in 18- the 3rd.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
A kind of Combined type screw of automatic distraction reduction sclerite, as shown in Figures 1 to 6, including through fractured near end block 1 and
Inner screw 3 that screw thread is connected into distal bone folded block 2, the screw sleeve 4 for being connected to fractured near end block 1 and being sleeved on inner screw 3, with it is interior
The adjustment part 5 that screw rod 3 is connected；The inner screw 3 includes optical axis section 6 and external diameter is more than the first threaded connection section of optical axis section 6
7, its first threaded connection section 7 is stretched into and is threaded in distal bone folded block 2；The screw sleeve 4 includes the He of hollow sleeve pipeline section 8
Second threaded connection section 9, it is sleeved on the optical axis section 3 of the inner screw 3 towards the hollow sleeve pipeline section 8 of the side of distal bone folded block 2
Outside, and its second threaded connection section 9 be threaded on fractured near end block 1；The adjustment part 5 includes the spiral shell of tail cap 10 and the 3rd
Line connecting portion 11, the medial surface of tail cap 10 props up end face of the screw sleeve 4 away from the side of distal bone folded block 2, the 3rd threaded connection section 11
Stretch into and be threaded in one end of the proximally facing sclerite 1 of inner screw 3.；Optical axis section is provided with and the adjustment part the
4th threaded joints of three threaded joints connection, the 4th threaded joints have female thread structure, connect with the 3rd screw thread
The external screw thread matching of socket part.Tail cap 10 is provided with hexagonal hollow 18 in the 3rd.
One side end face of the proximally facing sclerite of the optical axis section is provided with hexagonal hollow 16 in first, for pushing inner screw
Into in the bone hole for accomplishing fluently screw thread；The screw sleeve different from towards a side end face of distal bone folded block provided with hexagonal in second
Sky 17, fractured near end block is rotated into for pushing screw sleeve.
It is pointed out that being coaxially provided with through hole on inner screw, screw sleeve and adjustment part three, human body group can be facilitated
Knit liquid circulation, and cleaning-sterilizing during operation.
When screw sleeve is screwed in, the screw thread of screw sleeve enters fashionable cutting groove along inner screw and entered, and far and near bone piece is not
It can move, without friction between interior, screw sleeve, inner screw also will not rotate or loosen.
The external diameter of above-mentioned hollow sleeve pipeline section 8 is less than the external diameter of the described first threaded connection section 7, in the described first threaded connection
Section 9 is provided with blocking surface 12, the place plane of blocking surface 12 and the axis of inner screw 3 towards one end of the hollow sleeve pipeline section 8
Direction is vertical.
The external diameter of above-mentioned second threaded connection section 9 is more than the external diameter of the hollow sleeve pipeline section.Above-mentioned second threaded connection section 9
External diameter be equal to described first threaded connection section 7 external diameter.
The end face outside of above-mentioned adjustment part 5 is provided with hexagonal hollow 18 in the 3rd.It is convenient to be entered using instruments such as inner hexagon spanners
Row torquing operations.
In an optional embodiment, screw sleeve shape is machined with the light coordinated with inner screw like multilayer boss, inside
Slide opening, and a diameter of 5mm；The lower end external diameter of screw sleeve is 8mm；Upper end is machined with the screw thread coordinated with fractured near end block, screw thread
Length is 20mm, a diameter of 9mm；Upper surface is machined with the interior hexagonal that inscribed circle diameter is 7mm.Above-mentioned hollow sleeve pipeline section 8 and institute
State optical axis section between be slidably matched.Or, there is gap between 3 outer walls of the above-mentioned inwall of hollow sleeve pipeline section 8 and the optical axis section.
Tail cap is threadedly coupled with inner screw, is inserted finally, is closed the trailing space of this screw assemblies, is prevented Bone Ingrowth.
The above-mentioned medial surface of tail cap 10 is provided with taper thread, has steel plate 14 on the outside of screw sleeve, is set on the steel plate 14 and taper thread in tail cap
The lock hole 13 matched somebody with somebody, steel plate medial surface props up the screw sleeve end face., can be by locking synthetism with being fixed with locking bone fracture plate
The locking screw thread hole of plate, partial screw threads match each other after interlocking, then are connected with the inner screw of the screw assemblies of the present invention, realize lock
Determine the fixed form of bone plate-strut screw-bone.
In addition, tail cap outer rim also uses smooth structure, similar most common plain screw afterbody usually.Tail cap is passed through
Near-end bone piece is tightened up with inner screw, you can realize that combination struts the fixed form of screw-bone.Conventional pressurized synthetism can also be passed through
After the circular hole of plate, then it is connected with the inner screw of screw assemblies of the present invention, realizes the fixation of pressurized bone plate-strut screw-bone
Mode.
After the run-out(of thread) of inner screw is withstood in the front end of screw sleeve, continue rotary screw set.Due to front inner screw
Barrier effect, screw sleeve starts rotation in situ, and fractured near end block is due to the rotation of the screw thread of screw sleeve, it will to screw afterbody
Direction is moved, and opposite proximal end sclerite engenders separation.When the distance of separation reaches the result needed, stop screw sleeve
Rotation, realizes the separation between sclerite, and the distance for maintaining this to separate.
The present invention is simple in construction, reasonable in design, it is possible to achieve two sclerites are strutted and freely adjusted, for different need
Will, can targetedly it be operated, very convenient, favourable patients ' recovery, also, the tail cap structure and screw sleeve that set are close
Laminating, it is to avoid Bone Ingrowth, knockout screw more facilitates, and reduces the pain of patient.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. a kind of Combined type screw of automatic distraction reduction sclerite, it is characterised in that：Including connecting through fractured near end block screw thread
Enter the inner screw of distal bone folded block, be connected to fractured near end block and be sleeved on the screw sleeve on inner screw, be connected with inner screw
Adjustment part；The inner screw includes optical axis section and external diameter is more than the first threaded connection section of optical axis section, its first threaded connection
Section is stretched into and is threaded in distal bone folded block；The screw sleeve includes hollow sleeve pipeline section and the second threaded connection section, its court
The optical axis section outside of the inner screw, and its second threaded connection section spiral shell are sleeved on to the hollow sleeve pipeline section of distal bone folded block side
Line is connected on fractured near end block；The adjustment part includes tail cap and the 3rd threaded joints, and tail cap medial surface props up screw sleeve
End face away from distal bone folded block side, the 3rd threaded connection section stretches into and is threaded in the proximally facing sclerite of inner screw
One end；One side end face of the proximally facing sclerite of optical axis section and the screw sleeve different from towards distal bone folded block
It is hollow that one side end face is equipped with interior hexagonal；The optical axis section is provided with the 4th be connected with the threaded joints of adjustment part the 3rd
Threaded joints.
2. a kind of Combined type screw of automatic distraction reduction sclerite according to claim 1, it is characterised in that：The sky
The external diameter of heart casing section is less than the external diameter of the described first threaded connection section, and section is threadedly coupled towards the hollow sleeve described first
Plane where one end of pipeline section is provided with blocking surface, the blocking surface is vertical with the inner screw axis direction.
3. a kind of Combined type screw of automatic distraction reduction sclerite according to claim 1 or 2, it is characterised in that：Institute
The external diameter for stating the second threaded connection section is more than the external diameter of the hollow sleeve pipeline section.
4. a kind of Combined type screw of automatic distraction reduction sclerite according to claim 1 or 2, it is characterised in that：Institute
The external diameter for stating the second threaded connection section is equal to the external diameter of the described first threaded connection section.
5. a kind of Combined type screw of automatic distraction reduction sclerite according to claim 1, it is characterised in that：It is described to adjust
The end face outside of one integral piece is provided with inner hexagonal hole.
6. a kind of Combined type screw of automatic distraction reduction sclerite according to claim 1, it is characterised in that：The sky
It is slidably matched between heart casing section and optical axis section.
7. a kind of Combined type screw of automatic distraction reduction sclerite according to claim 1, it is characterised in that：The sky
There is gap between heart casing section inwall and optical axis section outer wall.
8. a kind of Combined type screw of automatic distraction reduction sclerite according to claim 1, it is characterised in that：The tail
Cap medial surface is provided with taper thread, has steel plate on the outside of screw sleeve, the lock hole matched with taper thread in tail cap, steel are set on the steel plate
Plate medial surface props up the screw sleeve end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201444.5A CN106963469A (en) | 2017-03-21 | 2017-03-21 | A kind of Combined type screw of automatic distraction reduction sclerite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201444.5A CN106963469A (en) | 2017-03-21 | 2017-03-21 | A kind of Combined type screw of automatic distraction reduction sclerite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106963469A true CN106963469A (en) | 2017-07-21 |
Family
ID=59335618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710201444.5A Pending CN106963469A (en) | 2017-03-21 | 2017-03-21 | A kind of Combined type screw of automatic distraction reduction sclerite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106963469A (en) |
Cited By (1)
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101061966A (en) * | 2007-06-06 | 2007-10-31 | 李涛 | Hip screw having two functions of locking and driving |
| CN101214167A (en) * | 2008-01-04 | 2008-07-09 | 中国人民解放军第四军医大学 | Pediculus arcus vertebralis screw nail nail-path partial point-like curing method and matching with hollow side opening tap |
| CN207323532U (en) * | 2017-03-21 | 2018-05-08 | 姚忠宝 | A kind of Combined type screw of automatic distraction reduction sclerite |
-
2017
- 2017-03-21 CN CN201710201444.5A patent/CN106963469A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101061966A (en) * | 2007-06-06 | 2007-10-31 | 李涛 | Hip screw having two functions of locking and driving |
| CN101214167A (en) * | 2008-01-04 | 2008-07-09 | 中国人民解放军第四军医大学 | Pediculus arcus vertebralis screw nail nail-path partial point-like curing method and matching with hollow side opening tap |
| CN207323532U (en) * | 2017-03-21 | 2018-05-08 | 姚忠宝 | A kind of Combined type screw of automatic distraction reduction sclerite |
Cited By (2)
| 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 |
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Application publication date: 20170721 |
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| RJ01 | Rejection of invention patent application after publication |