CN109363755A - A kind of multifunctional double-headed forcing screw - Google Patents
A kind of multifunctional double-headed forcing screw Download PDFInfo
- Publication number
- CN109363755A CN109363755A CN201811425640.1A CN201811425640A CN109363755A CN 109363755 A CN109363755 A CN 109363755A CN 201811425640 A CN201811425640 A CN 201811425640A CN 109363755 A CN109363755 A CN 109363755A
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- Prior art keywords
- screw
- tail end
- end connector
- headed
- thread segment
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- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 abstract description 9
- 230000035876 healing Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 206010017076 Fracture Diseases 0.000 description 33
- 208000010392 Bone Fractures Diseases 0.000 description 31
- 210000000988 bone and bone Anatomy 0.000 description 7
- 230000005284 excitation Effects 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 208000006670 Multiple fractures Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 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
- A61B17/683—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
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
-
- 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
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 invention discloses a kind of multifunctional double-headed forcing screws, it is related to the field of medical instrument technology, solve the problems, such as that two sides fracture site healing not close and hollow screw easy loose or dislocation in fixation procedure easily occurs in existing hollow screw, its key points of the technical solution are that: including screw body, screw body both ends are respectively equipped with the front end body of screw and tail end connector；Tail end connector surface is equipped with thread segment, and the hand of spiral of thread segment is identical as the hand of spiral of the front end body of screw, and the screw pitch of thread segment is less than the screw pitch of the front end body of screw；Tail end connector is equipped with the connecting hole connected for electric drill far from the end of the front end body of screw, and tail end connector is equipped with the jack being connected to connecting hole, screw body and jack grafting；End in screw body insertion jack is equipped with the limit plate contradicted with connecting hole inner wall, has and closely draw two sides fracture end over to one's side, keeps fracture site healing in two sides close, reduces the effect that hollow screw occurs the case where loose or dislocation in fixation procedure.
Description
Technical field
The present invention relates to the field of medical instrument technology, more specifically, it relates to a kind of multifunctional double-headed forcing screw.
Background technique
Fracture is that the continuity of bone structure is broken completely or partially, is more common in children and the elderly, young people also when
There is generation.Patient is often-a position fracture, minority is multiple fracture.Through appropriate processing in time, most patients can restore former
The function of coming, a few patients can leave different degrees of sequelae.
The fixation of existing fracture mainly passes through the instruments such as thick steel needle, plain screw, hollow screw and consolidates to fracture site
It is fixed.Existing hollow screw includes screw body and the front end body of screw connecting with screw body, in use hollow screw to bone
During folding part position is fixed, need to be attached by hollow screw again after squeezing the fracture site of two sides closely,
Easily there is two sides fracture site and heals untight situation and hollow screw in fixation procedure the case where loose or dislocation.
Therefore, how to design a kind of multifunctional double-headed forcing screw is our problems in the urgent need to address at present.
Summary of the invention
The object of the present invention is to provide a kind of multifunctional double-headed forcing screws, have and closely draw two sides fracture end over to one's side, make
Fracture site healing in two sides is close, reduces the effect that hollow screw occurs the case where loose or dislocation in fixation procedure.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of multifunctional double-headed pressurization spiral shell
Nail, including screw body, the screw body both ends are respectively equipped with the front end body of screw and tail end connector；The screw body edge
Own axes direction is equipped with guide pin through-hole, and guide pin through-hole both ends stretch out the end of the front end body of screw and tail end connector respectively
Face；Tail end connector surface is equipped with thread segment, and the hand of spiral of thread segment is identical as the hand of spiral of the front end body of screw, spiral shell
The screw pitch of line section is less than the screw pitch of the front end body of screw；The tail end connector is equipped with far from the end of the front end body of screw to be connected for electric drill
The connecting hole connect, the tail end connector are equipped with the jack being connected to connecting hole, screw body and jack grafting；The screw
End in ontology insertion jack is equipped with the limit plate contradicted with connecting hole inner wall.
By using above-mentioned technical proposal, the screw pitch of the front end body of screw is less than using the screw pitch of thread segment, in front end screw
When body and fracture site side are threadedly engaged, the thread segment on tail end connector is threadedly engaged with the fracture site other side, front end
The speed of shooting of the body of screw shoots speed greater than the thread segment on tail end connector, convenient for closely drawing fracture site two sides
Hold together, keep fracture site healing in two sides close, reduces hollow screw and occur the case where loose or dislocation in fixation procedure；Utilize screw
Ontology and jack grafting, during dismantling double end forcing screw, the back-out speed of the front end body of screw is greater than tail end connector
On the back-out speed of thread segment avoid double end forcing screw in disassembly by bone so that screw body is moved along jack direction
The case where folding part position generates crack backwards to extruding generation；It is contradicted using limit plate and connecting hole inner wall, convenient for limitation screw sheet
Body and tail end connector relative circumferential rotate；It is contradicted using limit plate with hole end surface is connect, convenient for limitation screw body and tail end
Connector is mutually disengaged inserting state.
The present invention is further arranged to: the screw pitch ratio of the screw pitch of the thread segment and the front end body of screw is 0.5-0.8.
By using above-mentioned technical proposal, so that double end forcing screw slowly draws fracture site two sides over to one's side.
The present invention is further arranged to: the tail end connector is round estrade, and the diameter of round estrade is along tail end connector court
The direction of the forward end body of screw is gradually reduced；The diameter of the thread segment increases direction along the diameter of round estrade and is gradually incremented by.
It by using above-mentioned technical proposal, is threadedly engaged tail end connector with fracture site easy to operate, is convenient for tail
End connector buries in people's bone head, reduces tail end connector to the excitation of surrounding tissue.
The present invention is further arranged to: the tilt angle of the tail end connector is 5-15 degree.
By using above-mentioned technical proposal, further such that tail end connector be threadedly engaged with fracture site it is easy to operate.
The present invention is further arranged to: the connecting hole is hexagonal hole.
By using above-mentioned technical proposal, using connecting hole, so that the installation of lag screw is easy to operate.
The present invention is further arranged to: the limit plate is the regular hexagon ring flat-plate cooperated with connecting hole inner wall.
By using above-mentioned technical proposal, using regular hexagon ring flat-plate, so that limit plate uniform force, extends limit plate
Service life.
In conclusion the invention has the following advantages: making two sides fracture convenient for closely drawing fracture site two sides over to one's side
Position healing is close, reduces hollow screw and occurs the case where loose or dislocation in fixation procedure；Double end forcing screw is avoided to tear open
The case where fracture site is generated into crack backwards to extruding when unloading generation；It is contradicted using limit plate and connecting hole inner wall, convenient for limit
Screw-making ontology and tail end connector relative circumferential rotate；It is contradicted using limit plate with hole end surface is connect, convenient for limitation screw sheet
Body and tail end connector are mutually disengaged inserting state；It is threadedly engaged tail end connector with fracture site easy to operate, being convenient for will
Tail end connector buries in people's bone head, reduces tail end connector to the excitation of surrounding tissue.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the embodiment of the present invention.
In figure: 1, screw body；11, the front end body of screw；12, tail end connector；13, guide pin through-hole；14, jack；15, even
Connect hole；16, thread segment；17, limit plate.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment: a kind of multifunctional double-headed forcing screw, as shown in Figure 1, including screw body 1,1 both ends of screw body point
It She You not the front end body of screw 11 and tail end connector 12.Screw body 1 is equipped with guide pin through-hole 13, guide pin along own axes direction
13 both ends of through-hole stretch out the end face of the front end body of screw 11 and tail end connector 12 respectively.In the reduction of the fracture, first in fractures
Bore fixation hole in position；Then guide pin is placed in fixation hole by electric drill；Then by guide pin and 13 grafting of guide pin through-hole, make front end spiral shell
Rivet nut 11, screw body 1 and tail end connector 12 are moved along guide pin extending direction.
12 surface of tail end connector is equipped with thread segment 16, the hand of spiral of thread segment 16 and the spiral side of the front end body of screw 11
To identical, the screw pitch of thread segment 16 is less than the screw pitch of the front end body of screw 11.End of the tail end connector 12 far from the front end body of screw 11
Portion is equipped with the connecting hole 15 connected for electric drill, and tail end connector 12 is equipped with the jack 14 being connected to connecting hole 15, screw body 1
With 14 grafting of jack.The end that screw body 1 is inserted into jack 14 is equipped with the limit plate 17 contradicted with 15 inner wall of connecting hole.It utilizes
The screw pitch of thread segment 16 is less than the screw pitch of the front end body of screw 11, when in front end, the body of screw 11 and fracture site side are threadedly engaged,
Thread segment 16 on tail end connector 12 is threadedly engaged with the fracture site other side, and the front end body of screw 11 shoots speed greater than tail
That holds the thread segment 16 on connector 12 shoots speed, convenient for closely drawing fracture site two sides over to one's side, is cured two sides fracture site
It closes closely, reduces hollow screw and occur the case where loose or dislocation in fixation procedure.Using screw body 1 and 14 grafting of jack,
During dismantling double end forcing screw, the back-out speed of the front end body of screw 11 is greater than the thread segment 16 on tail end connector 12
Back-out speed avoid double end forcing screw from carrying on the back fracture site in disassembly so that screw body 1 is moved along 14 direction of jack
The case where generating crack to extruding generation.Contradicted using limit plate 17 and 15 inner wall of connecting hole, convenient for limitation screw body 1 with
The rotation of 12 relative circumferential of tail end connector.It is contradicted using limit plate 17 and 15 end face of connecting hole, convenient for limitation screw body 1 and tail
End connector 12 is mutually disengaged inserting state.
The screw pitch of thread segment 16 and the screw pitch ratio of the front end body of screw 11 are 0.5-0.8, use 0.8 in the present embodiment, make
Double end forcing screw is obtained slowly to draw fracture site two sides over to one's side.
Tail end connector 12 is round estrade, and the diameter of round estrade is along tail end connector 12 towards the direction of the front end body of screw 11
It is gradually reduced.The diameter of thread segment 16 increases direction along the diameter of round estrade and is gradually incremented by, and makes tail end connector 12 and fractures
Position be threadedly engaged it is easy to operate, convenient for tail end connector 12 is buried in people's bone head, reduce tail end connector 12 to surrounding tissue
Excitation.
The tilt angle of round estrade is 5-15 degree, and the tilt angle of round estrade uses 10 degree in the present embodiment, so that tail end
Connector 12 is threadedly engaged easy to operate with fracture site.
Connecting hole 15 is hexagonal hole, using connecting hole 15, so that the installation of lag screw is easy to operate.Limit plate 17
For the regular hexagon ring flat-plate cooperated with 15 inner wall of connecting hole, using regular hexagon ring flat-plate, so that 17 uniform force of limit plate, extends
The service life of limit plate 17.
Working principle: it is less than the screw pitch of the front end body of screw 11, the body of screw 11 and bone in front end using the screw pitch of thread segment 16
When folding part position side is threadedly engaged, the thread segment 16 on tail end connector 12 is threadedly engaged with the fracture site other side, front end spiral shell
The speed of shooting of rivet nut 11 shoots speed greater than the thread segment 16 on tail end connector 12, convenient for fracture site two sides are close
It draws over to one's side, keeps fracture site healing in two sides close, reduce hollow screw and occur the case where loose or dislocation in fixation procedure.Utilize spiral shell
Ontology 1 and 14 grafting of jack are followed closely, during dismantling double end forcing screw, the back-out speed of the front end body of screw 11 is greater than tail end
The back-out speed of thread segment 16 on connector 12 avoids double end forcing screw so that screw body 1 is moved along 14 direction of jack
The case where fracture site is generated into crack backwards to extruding in disassembly generation.It is supported using limit plate 17 and 15 inner wall of connecting hole
Touching rotates convenient for limitation screw body 1 and 12 relative circumferential of tail end connector.It is supported using limit plate 17 and 15 end face of connecting hole
Touching is mutually disengaged inserting state convenient for limitation screw body 1 and tail end connector 12.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (6)
1. a kind of multifunctional double-headed forcing screw, it is characterized in that: include screw body (1), screw body (1) the both ends difference
Equipped with the front end body of screw (11) and tail end connector (12)；The screw body (1) is equipped with guide pin along own axes direction and leads to
Hole (13), guide pin through-hole (13) both ends stretch out the end face of the front end body of screw (11) and tail end connector (12) respectively；The tail
Connector (12) surface is held to be equipped with thread segment (16), the hand of spiral of thread segment (16) and the hand of spiral of the front end body of screw (11)
Identical, the screw pitch of thread segment (16) is less than the screw pitch of the front end body of screw (11)；The tail end connector (12) is far from front end screw
The end of body (11) is equipped with the connecting hole (15) connected for electric drill, and the tail end connector (12) is equipped with connecting hole (15) even
Logical jack (14), screw body (1) and jack (14) grafting；End in screw body (1) insertion jack (14) is set
There is the limit plate (17) contradicted with connecting hole (15) inner wall.
2. a kind of multifunctional double-headed forcing screw according to claim 1, it is characterized in that: the screw pitch of the thread segment (16)
Screw pitch ratio with the front end body of screw (11) is 0.5-0.8.
3. a kind of multifunctional double-headed forcing screw according to claim 1, it is characterized in that: the tail end connector (12) is
The diameter of round estrade, round estrade is gradually reduced along the direction of tail end connector (12) towards the front end body of screw (11)；The screw thread
The diameter of section (16) increases direction along the diameter of round estrade and is gradually incremented by.
4. a kind of multifunctional double-headed forcing screw according to claim 3, it is characterized in that: the tail end connector (12)
Tilt angle is 5-15 degree.
5. a kind of multifunctional double-headed forcing screw according to claim 1, it is characterized in that: the connecting hole (15) is positive six
Side shape hole.
6. a kind of multifunctional double-headed forcing screw according to claim 5, it is characterized in that: the limit plate (17) is and connects
Connect the regular hexagon ring flat-plate of hole (15) inner wall cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425640.1A CN109363755A (en) | 2018-11-27 | 2018-11-27 | A kind of multifunctional double-headed forcing screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425640.1A CN109363755A (en) | 2018-11-27 | 2018-11-27 | A kind of multifunctional double-headed forcing screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109363755A true CN109363755A (en) | 2019-02-22 |
Family
ID=65383942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811425640.1A Pending CN109363755A (en) | 2018-11-27 | 2018-11-27 | A kind of multifunctional double-headed forcing screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109363755A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832165A (en) * | 2022-05-18 | 2022-08-02 | 中国人民解放军空军军医大学 | Orthopedic screw and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175555A (en) * | 1977-02-24 | 1979-11-27 | Interfix Limited | Bone screw |
| EP2253764A2 (en) * | 2009-05-14 | 2010-11-24 | Wilhelm Layher Verwaltungs-GmbH | Frame-shaped truss |
| CN201743761U (en) * | 2010-08-20 | 2011-02-16 | 中国人民解放军第二军医大学 | Absorbent double end thread compression screw |
| CN201768025U (en) * | 2010-08-13 | 2011-03-23 | 丁亮华 | Clavicle intramedullary nail |
| CN201996650U (en) * | 2011-02-24 | 2011-10-05 | 苏州艾迪尔医疗器械有限公司 | Double-headed hollow forcing screw |
| CN204468250U (en) * | 2015-03-06 | 2015-07-15 | 胡明军 | A kind of hollow pressurization nail |
| CN207729080U (en) * | 2017-12-28 | 2018-08-14 | 上海瀚氢动力科技有限公司 | A kind of pressure pipeline connection structure |
| CN209360865U (en) * | 2018-11-27 | 2019-09-10 | 张钰 | A kind of multifunctional double-headed forcing screw |
-
2018
- 2018-11-27 CN CN201811425640.1A patent/CN109363755A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175555A (en) * | 1977-02-24 | 1979-11-27 | Interfix Limited | Bone screw |
| EP2253764A2 (en) * | 2009-05-14 | 2010-11-24 | Wilhelm Layher Verwaltungs-GmbH | Frame-shaped truss |
| CN201768025U (en) * | 2010-08-13 | 2011-03-23 | 丁亮华 | Clavicle intramedullary nail |
| CN201743761U (en) * | 2010-08-20 | 2011-02-16 | 中国人民解放军第二军医大学 | Absorbent double end thread compression screw |
| CN201996650U (en) * | 2011-02-24 | 2011-10-05 | 苏州艾迪尔医疗器械有限公司 | Double-headed hollow forcing screw |
| CN204468250U (en) * | 2015-03-06 | 2015-07-15 | 胡明军 | A kind of hollow pressurization nail |
| CN207729080U (en) * | 2017-12-28 | 2018-08-14 | 上海瀚氢动力科技有限公司 | A kind of pressure pipeline connection structure |
| CN209360865U (en) * | 2018-11-27 | 2019-09-10 | 张钰 | A kind of multifunctional double-headed forcing screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832165A (en) * | 2022-05-18 | 2022-08-02 | 中国人民解放军空军军医大学 | Orthopedic screw and preparation method thereof |
| CN114832165B (en) * | 2022-05-18 | 2023-09-01 | 中国人民解放军空军军医大学 | Screw for orthopaedics and preparation method thereof |
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