CN105662562B - The sealed nail of Worm type - Google Patents
The sealed nail of Worm type Download PDFInfo
- Publication number
- CN105662562B CN105662562B CN201610000974.9A CN201610000974A CN105662562B CN 105662562 B CN105662562 B CN 105662562B CN 201610000974 A CN201610000974 A CN 201610000974A CN 105662562 B CN105662562 B CN 105662562B
- Authority
- CN
- China
- Prior art keywords
- nail
- screw
- worm
- nail rod
- cylindrical cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7071—Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; Tools therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7094—Solid vertebral fillers; devices for inserting such fillers
Abstract
The invention discloses a kind of sealed nail of Worm type, is related to orthopaedic medical treatment equipment technical field.It includes nail rod body, is built in the Worm type lock uint of nail rod body；The top of nail rod body is nail rod entity, and the bottom of nail rod entity is provided with cylindrical cavity；Worm screw that Worm type lock uint includes being vertically arranged, the turbine in vertical direction equally distributed at least two and worm engaging；The lower end of worm screw is connected with conical points body rotating shaft, and the upper end of worm screw penetrates nail rod entity and is connected with nail rod physical axle；The upper end of worm screw is extended in circular sealing groove, and the both ends of each turbine are rotatablely connected with the side wall of cylindrical cavity；Each turbine is provided with square slideway axially penetrating through, and two nuts mortar board screw symmetrically arranged in opposite directions is sliding combined with square slideway；Cylindrical cavity coordinates each mortar board screw to have screw.Delicate structure of the present invention, is conveniently inserted, and the injury to patient is small, fixation, convenient disassembly.
Description
Technical field
The present invention relates to orthopaedic medical treatment equipment technical field.
Background technology
It is known that backbone non-fusion technology on treatment spinal lesion, because it has the damage to backbone small, is kept
The mobility and stability of backbone, the biomechanics characteristic of reconstruction of intervertebral disc, prevent and mitigate moving back for adjacent segment interverbebral disc
Become the advantages that accelerating, many hospitals have begun to use in recent years, a piece of light of its application prospect.Make at present in spinal operation
Pedicle nail includes U staples seat and screw body, and screw body will be able to be in that the fixed of fixed angle connects with U staples seat
Connect, Universal screw nail, such as a kind of spinal cord bone graft disclosed in US4636217A can also be connected into through bulb, ball cup.It is existing
Screw thread on the screw body of some pedicle nails is mostly the constant worm pich for being covered with screw body, is also had in screw body first half
For single thread, latter half of screw body is double thread.Above-mentioned pedicle nail, which is screwed into pedicle of vertebral arch, wastes time and energy, and screw thread is to vertebra
The shear action of nut is big, the damage to bone is big, and nail interfacial contact is not close, and pedicle nail is easily deviate from；Especially will be existing
Structured pedicle nail is applied in the non-fused operation of backbone, the movable property between the spinal segments being related to due to operation,
In postoperative recovery process, due to the activity of patient, there is the phenomenon of cutting sclerotin in the screw thread of screw body upper end, recover ten
Divide slowly, or even the danger that pedicle nail is easily deviate from be present.
The content of the invention
The technical problems to be solved by the invention, it is to be directed to above-mentioned technical deficiency, there is provided a kind of Worm type is sealed
Nail, its delicate structure, is conveniently inserted, and the injury to patient is small, fixation, convenient disassembly.
The technical solution adopted by the present invention is：There is provided a kind of Worm type sealed nail, including nail rod body, be built in nail rod
The Worm type lock uint of body；
The top of the nail rod body is the head of a nail, and circular sealing groove is provided with the middle part of the head of a nail；Circular sealing groove internal thread is connected with
Sealing cap；The top surface of sealing cap is provided with the mutually corresponding cross bath in position with the top surface of the head of a nail；The top of nail rod body is nail rod
Entity, the bottom of nail rod entity are provided with cylindrical cavity, and the lower end of cylindrical cavity is conical points body；
The Worm type lock uint include be vertically arranged worm screw, in vertical direction equally distributed at least two and snail
The turbine of bar engagement；The lower end of worm screw is connected with conical points body rotating shaft, and the upper end of worm screw penetrates nail rod entity and real with nail rod
Body rotating shaft connects；The upper end of worm screw is extended in circular sealing groove, and the upper surface of worm screw is provided with cross recess；The both ends of each turbine
Side wall with cylindrical cavity is rotatablely connected；Each turbine is provided with square slideway axially penetrating through, sliding in square slideway
It is dynamic to be combined with two nuts mortar board screw symmetrically arranged in opposite directions；Cylindrical cavity coordinates each mortar board screw to have spiral shell
Hole.
Further optimize the technical program, be filled with the screw of the sealed nail of Worm type and be used to making cylindrical cavity and outer
The bone cement of boundary's isolation.
Further optimize the technical program, the lateral surface of the nail rod body of the sealed nail of Worm type is frosting.
Further optimize the technical program, the side of the head of a nail of the sealed nail of Worm type is provided with annular in a circumferential direction
Groove.
The beneficial effects of the invention are as follows：
1st, in the technical program, there is no screw thread on nail rod body, and the frictional force for not lodging screw thread or outer surface is real
Now with the fixation of bone, in implantation process, cutting left and right will not be produced to bone, helps to reduce secondary injury.For bone
The fixation of bone, the technical program, to turbine, then screw the side being placed in inside cylindrical cavity using worm-drive by turbine
Cap screw, screw screw thread of the mortar board screw also with nail rod body during rotation coordinate, and mortar board screw is in rotary course
Bone laterally is pierced, after mortar board screw pierces bone, nail rod body and bone can be made to realize axially and radially firmly solid
It is fixed, and it pierces depth and is far above traditional screw thread penetraction depth, although mortar board screw is cut during piercing in the technical program
The bone area cut is smaller, but the tensile capacity of axial direction and the anti-rotation ability of radial direction are also far above traditional engagement thread.
In dismounting, the worm screw counter-rotating in the technical program, you can remaining so that mortar board screw to be back-outed from bone
Nail rod body it is then more smooth with the contact surface of bone, it is time saving and energy saving to take out mode for more traditional nail during taking-up, reduces broken nail
Risk, the injury to human body are smaller.
2nd, in the drilling of nail rod body implantation bone, screw Cement fixation can prevent tissue or blood from entering circle
Cylindrical cavity pollutes Worm type lock uint, hinders the dismounting in later stage.After the implantation of nail rod body, rotary worm, mortar board is utilized
Screw bone cement punctures.
3rd, the lateral surface of nail rod body is frosting, and frosting can increase and bone in the case where not cutting bone
Contact area, the especially fixation to nail rod entity and bone are even more important, and nail rod entity can stably prevent nail rod body shaft
To rocking.
4th, the technical program is different from traditional nail, and the rotation when taking out of traditional nail is back-outed, and the technical program is
Axially apply pulling force to be hauled out, in dismounting, annular groove can provide stable axially loaded point.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation after the separation of Fig. 1 sealing caps；
Fig. 3 is the operating diagram that Fig. 2 mortar board screws drill out；
Fig. 4 is the structural representation of worm screw lock uint bottom.
In figure, 1, nail rod body；2nd, the head of a nail；3rd, circular sealing groove；4th, sealing cap；5th, nail rod entity；6th, cylindrical cavity；7th, bore
Shape point body；8th, worm screw；9th, turbine；10th, square slideway；11st, mortar board screw；12nd, screw；13rd, annular groove.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
As shown in Figure 1-2, the sealed nail of Worm type, including nail rod body 1, be built in nail rod body 1 Worm type it is sealed
Device；The top of nail rod body 1 is the head of a nail 2, and the middle part of the head of a nail 2 is provided with circular sealing groove 3；The circular internal thread of sealing groove 3 is connected with envelope
Cap 4；The top surface of sealing cap 4 is provided with the mutually corresponding cross bath in position with the top surface of the head of a nail 2；The top of nail rod body 1 is nail
Bar entity 5, the bottom of nail rod entity 5 are provided with cylindrical cavity 6, and the lower end of cylindrical cavity 6 is conical points body 7；The worm screw
Formula lock uint include be vertically arranged worm screw 8, in equally distributed three turbines 9 engaged with worm screw 8 of vertical direction；Worm screw
8 lower end is connected with the rotating shaft of conical points body 7, and the upper end of worm screw 8 penetrates nail rod entity 1 and is connected with the rotating shaft of nail rod entity 5；Snail
The upper end of bar 8 is extended in circular sealing groove 3, and the upper surface of worm screw 8 is provided with cross recess；The both ends of each turbine 9 are and cylinder
The side wall rotation connection of shape cavity 6；Each turbine 9 is provided with square slideway 10 axially penetrating through, and is slided in square slideway 10
It is combined with two nuts mortar board screw 11 symmetrically arranged in opposite directions；Cylindrical cavity 6 coordinates each mortar board screw 11 to have
Screw 12；The bone cement for being used for making cylindrical cavity 6 and extraneous isolation is filled with screw 12；The lateral surface of nail rod body 1 is
Frosting；The side of the head of a nail 2 is provided with annular groove 13 in a circumferential direction.
Fig. 4 is the theory structure on the present embodiment basis, and worm screw 8 rotates, and drives three turbines 9 to rotate, in an initial condition,
Mortar board screw 11 is located in the square slideway 10 of turbine 9, and screw 12 makes cylindrical empty in an initial condition by bone cement packing
Chamber 6 is hedged off from the outer world, and when turbine 9 rotates, mortar board screw 11 coordinates with the screw thread of screw 12, outwards drills out, the effect one of turbine 9
Aspect is that driving mortar board screw 11 rotates, and is on the other hand to make its axial location stable, makes its generation stronger with reference to screw 12
Tension, anti-rotational performance.
As shown in figure 3, in operation, first have to turn on sealing cap 4, then using screwdriver rotary worm 8, when mortar board screw
When 11 head of a nail touches the inwall of cylindrical cavity 6, worm screw can not just continue to rotate, and now mortar board screw 11 is already drilled into bone
Inside bone.
After mortar board screw 11 pierces, take out screwdriver, to circular sealing groove 3 at pour a certain amount of bone cement, make worm screw 8 with
Circular sealing groove 3 strikes up partnership, and can prevent worm screw 8 from rotating, and finally screws on sealing cap 4.
When removing of the invention, sealing cap 4 is outwarded winding, the bone cement for filling out envelope is abolished, then counter-rotating worm screw 8, Zhi Daoxuan
Turn to continue resistance stabilization, now illustrate that mortar board screw 11 has been returned in the square slideway 10 of turbine 9, now nail rod body
Adhesion between 1 and the drilling of bone is smaller, and rotating or directly above putting forward top cap 2 to be drawn off.
Claims (4)
- A kind of 1. sealed nail of Worm type, it is characterised in that：Including nail rod body（1）, be built in nail rod body（1）Worm type Lock uint；The nail rod body（1）Top be the head of a nail（2）, the head of a nail（2）Middle part be provided with circular sealing groove（3）；Circular sealing groove（3）It is interior It is threaded with sealing cap（4）；Sealing cap（4）Top surface and the head of a nail（2）Top surface be provided with the mutually corresponding cross bath in position；Nail Bar body（1）Top be nail rod entity（5）, nail rod entity（5）Bottom be provided with cylindrical cavity（6）, cylindrical cavity（6） Lower end be conical points body（7）；The Worm type lock uint includes the worm screw being vertically arranged（8）, in vertical direction equally distributed at least two and snail Bar（8）The turbine of engagement（9）；Worm screw（8）Lower end and conical points body（7）Rotating shaft connects, worm screw（8）Upper end penetrate nail rod Entity（1）And with nail rod entity（5）Rotating shaft connects；Worm screw（8）Upper end extend to circular sealing groove（3）It is interior, worm screw（8）Upper end Face is provided with cross recess；Each turbine（9）Both ends and cylindrical cavity（6）Side wall rotation connection；Each turbine（9） Square slideway is provided with axially penetrating through（10）, square slideway（10）Inside it is sliding combined with two nuts side symmetrically arranged in opposite directions Cap screw（11）；Cylindrical cavity（6）Coordinate each mortar board screw（11）Have screw（12）.
- 2. the sealed nail of Worm type according to claim 1, it is characterised in that：Screw（12）Interior be filled with is used to make cylinder Shape cavity（6）With the bone cement of external world's isolation.
- 3. the sealed nail of Worm type according to claim 1, it is characterised in that：Nail rod body（1）Lateral surface be frosted Face.
- 4. the sealed nail of Worm type according to claim 1, it is characterised in that：The head of a nail（2）Side in a circumferential direction It is provided with annular groove（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000974.9A CN105662562B (en) | 2016-01-04 | 2016-01-04 | The sealed nail of Worm type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000974.9A CN105662562B (en) | 2016-01-04 | 2016-01-04 | The sealed nail of Worm type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105662562A CN105662562A (en) | 2016-06-15 |
| CN105662562B true CN105662562B (en) | 2017-12-29 |
Family
ID=56190110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610000974.9A Expired - Fee Related CN105662562B (en) | 2016-01-04 | 2016-01-04 | The sealed nail of Worm type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105662562B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994038B (en) * | 2017-05-23 | 2024-03-26 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Be used for broken wall of backbone pedicle of vertebral arch to remedy fixing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4361141A (en) * | 1979-07-27 | 1982-11-30 | Zimmer Usa, Inc. | Scoliosis transverse traction assembly |
| US4553273A (en) * | 1983-11-23 | 1985-11-19 | Henry Ford Hospital | Vertebral body prosthesis and spine stabilizing method |
| US4636217A (en) * | 1985-04-23 | 1987-01-13 | Regents Of The University Of Minnesota | Anterior spinal implant |
| WO2008042305A2 (en) * | 2006-09-29 | 2008-04-10 | Nathan Moskowitz | Bi-directional fixating transvertebral body screws, zero-profile horizontal intervertebral miniplates, total intervertebral body fusion devices, and posterior motion-calibrating interarticulating joint stapling device for spinal fusion |
| CN100591936C (en) * | 2005-02-22 | 2010-02-24 | 蒂姆肯美国有限责任公司 | Thrust bearing assembly |
-
2016
- 2016-01-04 CN CN201610000974.9A patent/CN105662562B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4361141A (en) * | 1979-07-27 | 1982-11-30 | Zimmer Usa, Inc. | Scoliosis transverse traction assembly |
| US4553273A (en) * | 1983-11-23 | 1985-11-19 | Henry Ford Hospital | Vertebral body prosthesis and spine stabilizing method |
| US4636217A (en) * | 1985-04-23 | 1987-01-13 | Regents Of The University Of Minnesota | Anterior spinal implant |
| CN100591936C (en) * | 2005-02-22 | 2010-02-24 | 蒂姆肯美国有限责任公司 | Thrust bearing assembly |
| WO2008042305A2 (en) * | 2006-09-29 | 2008-04-10 | Nathan Moskowitz | Bi-directional fixating transvertebral body screws, zero-profile horizontal intervertebral miniplates, total intervertebral body fusion devices, and posterior motion-calibrating interarticulating joint stapling device for spinal fusion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105662562A (en) | 2016-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Shaoyong Inventor after: Tian Yong Inventor before: Meng Honglin |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171106 Address after: 250000 Shandong Bo Chiping County Liaocheng City Ping Zhen Middle Street Village No. 001 No. 5 Building 2 unit 501 room Applicant after: Sun Shaoyong Address before: 264404 Zeku Town, Wendeng District, Shandong, Zeku, Weihai Applicant before: Meng Honglin |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 Termination date: 20190104 |