CN105662562A - Worm type locking bone nail - Google Patents
Worm type locking bone nail Download PDFInfo
- Publication number
- CN105662562A CN105662562A CN201610000974.9A CN201610000974A CN105662562A CN 105662562 A CN105662562 A CN 105662562A CN 201610000974 A CN201610000974 A CN 201610000974A CN 105662562 A CN105662562 A CN 105662562A
- Authority
- CN
- China
- Prior art keywords
- nail
- worm
- screw
- cylindrical cavity
- worm type
- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—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 worm type locking bone nail, and relates to the technical field of orthopedics department medical instruments. The worm type locking bone nail comprises a nail rod body and a worm type locking device arranged in the nail rod body; the upper portion of the nail rod body is a nail body solid, and a cylindrical cavity is formed in the lower portion of the nail rod solid; the worm type locking device comprises a worm arranged vertically and at least two worm gears distributed uniformly in the vertical direction and meshed with the worm, the lower end of the worm is connected with a conical point body through a rotating shaft, the upper end of the worm penetrates through the nail rod solid and is connected with the nail body solid through a rotating shaft; the upper end of the worm extends into the round seal groove, and the two ends of each worm gear are rotationally connected with the side wall of the cylindrical cavity; a square slide way is formed in each worm gear in an axial penetrating mode, square nut screws with two nuts arranged symmetrically and oppositely are in slide fit with each square slide way, and screw holes matched with all the square nuts are formed in the cylindrical cavity. The worm type locking bone nail is ingenious in structure, convenient to implant, firm in fixation and convenient to disassemble, and injury to a patient is small.
Description
Technical field
The present invention relates to orthopaedic medical treatment equipment technical field.
Background technology
We know, backbone non-fusion technology is on treatment spinal lesion, due to it, to have the damage to backbone little, maintain mobility and the stability of backbone, the biomechanics characteristic of reconstruction of intervertebral disc, preventing and alleviate the advantage such as regression acceleration of adjacent segments intervertebral disk, a lot of hospital has started to adopt in recent years, and its application prospect a slice is bright. The pedicle nail used in spinal operation at present comprises U shape nail seat and screw body, and screw body can be being fixedly connected with of fixed angle with U shape nail seat, it is also possible to connects into universal screw through bulb, bulb seat. Screw thread on the screw body of existing pedicle nail mostly is the constant worm pich being covered with screw body, also has the single line screw thread being at screw body forebody, and screw body is latter half of is two-wire screw thread. Above-mentioned pedicle nail is screwed into vertebral arch root wastes time and energy, and screw thread is big to the shearing action of vertebral arch root, the damage of bone is big, contacts not tight between nail interface, and pedicle nail is easily deviate from; Especially the pedicle nail of existing structure is applied in the operation of backbone non-fused, movable property between the spinal segments related to owing to performing the operation, in recovery process after surgery, due to the activity of patient, there is the phenomenon of cutting sclerotin in the screw thread of screw body upper end, recover very slow, even there is the danger that pedicle nail is easily deviate from.
Summary of the invention
Technical problem to be solved by this invention is the technical deficiency for above-mentioned existence, it is provided that a kind of sealed nail of Worm type, its delicate structure, conveniently inserts, and the injury of patient is little, fixation, convenient disassembly.
The technical solution used in the present invention is: provide a kind of sealed nail of Worm type, comprises nail bar body, is built in the Worm type lock uint of nail bar body;
The top of described nail bar body is the head of a nail, and the middle part of the head of a nail has circular sealing groove; Circular sealing groove internal thread is connected with envelope cap; The end face of envelope cap all has the mutually corresponding cruciform groove in position with the end face of the head of a nail; The top of nail bar body is nail bar entity, and the bottom following closely bar entity is provided with cylindrical cavity, and the lower end of cylindrical cavity is conical point body;
Described Worm type lock uint comprise vertically setting worm screw, vertical direction equally distributed at least two with the turbine of worm meshing;The lower end of worm screw is connected with conical point body rotating shaft, and the upper end of worm screw penetrates nail bar entity and is connected with nail bar physical axle; The upper end of worm screw extends in circular sealing groove, and the upper surface of worm screw is provided with cross groove; The two ends of each turbine all sidewall with cylindrical cavity be rotationally connected; Each turbine is all provided with square slideway in axial running through, and is sliding combined with two symmetrically arranged in opposite directions mortar board screws of nut in square slideway; Cylindrical cavity coordinates each mortar board screw to have screw.
Optimize the technical program further, it is filled with in the screw of the sealed nail of Worm type for making cylindrical cavity and the bone cement of extraneous isolation.
Optimizing the technical program further, the outer side of the nail bar body of the sealed nail of Worm type is frosting.
Optimizing the technical program further, the side of the head of a nail of the sealed nail of Worm type has ring groove in a circumferential direction.
The invention has the beneficial effects as follows:
1, in the technical program, nail bar body does not have screw thread, and do not lodge the frictional force realization of screw thread or outside surface and the fixing of bone, in implantation process, about can not bone generation being cut, contribute to reducing by two injuries. fixing for bone, the technical program adopts worm drive to turbine, then the mortar board screw being placed in cylindrical cavity inside is screwed by turbine, mortar board screw rotate process in also with nail bar body screw thread fit, mortar board screw laterally bores into bone in rotary course, after mortar board screw bores bone, nail bar body and bone can be made to realize axially and radial firmly fixing, and it bores into the degree of depth far above traditional screw thread incision degree of depth, although in the technical program mortar board screw bore in process cut bone area less, but the resistance to tension of axis and the radial anti-ability of revolving are also far above traditional engagement thread.
In dismounting it is, the worm screw retrograde rotation in the technical program, namely mortar board screw can be back-outed from bone, remaining nail bar body is then comparatively level and smooth with the contact surface of bone, during taking-up, more traditional nail taking-up mode is time saving and energy saving, reduces broken nail risk, and the injury of human body is less.
2, when following closely the boring that bar body implants bone, screw Cement fixation is possible to prevent tissue or blood enters cylindrical cavity by the pollution of Worm type lock uint, hinders the dismounting in later stage. After nail bar body is implanted, rotary worm, utilizes mortar board screw bone cement to puncture.
3, the outer side following closely bar body is frosting, and frosting can increase the contact area with bone when not cutting bone, especially fixing even more important to nail bar entity and bone, and nail bar entity is stablized and is possible to prevent to follow closely bar body shaft to rocking.
4, the technical program is different from tradition nail, and tradition nail rotates when taking out to be back-outed, and the technical program axially applies pulling force to be hauled out, and when dismantling, ring groove can provide stable axially loaded point.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation after Fig. 1 seals cap separation;
Fig. 3 is the work schematic diagram that Fig. 2 mortar board screw bores out;
Fig. 4 is the structural representation of worm screw lock uint bottom.
In figure, 1, nail bar body; 2, the head of a nail; 3, circular sealing groove; 4, cap is sealed; 5, bar entity is followed closely; 6, cylindrical cavity; 7, conical point body; 8, worm screw; 9, turbine; 10, square slideway; 11, mortar board screw;12, screw; 13, ring groove.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in Figure 1-2, the sealed nail of Worm type, comprises nail bar body 1, is built in the Worm type lock uint of nail bar body 1; The top of nail bar body 1 is the head of a nail 2, and the middle part of the head of a nail 2 has circular sealing groove 3; Circular sealing groove 3 internal thread is connected with envelope cap 4; The end face of envelope cap 4 all has the mutually corresponding cruciform groove in position with the end face of the head of a nail 2; The top of nail bar body 1 is nail bar entity 5, and the bottom following closely bar entity 5 is provided with cylindrical cavity 6, and the lower end of cylindrical cavity 6 is conical point body 7; Described Worm type lock uint comprise vertically setting worm screw 8, at equally distributed three turbines 9 engaged with worm screw 8 of vertical direction; The lower end of worm screw 8 is connected with conical point body 7 rotating shaft, and the upper end of worm screw 8 penetrates nail bar entity 1 and is connected with nail bar entity 5 rotating shaft; The upper end of worm screw 8 extends in circular sealing groove 3, and the upper surface of worm screw 8 is provided with cross groove; The two ends of each turbine 9 all sidewall with cylindrical cavity 6 be rotationally connected; Each turbine 9 is all provided with square slideway 10 in axial running through, and is sliding combined with two symmetrically arranged in opposite directions mortar board screws 11 of nut in square slideway 10; Cylindrical cavity 6 coordinates each mortar board screw 11 to have screw 12; It is filled with for making cylindrical cavity 6 and the bone cement of extraneous isolation in screw 12; The outer side of nail bar body 1 is frosting; The side of the head of a nail 2 has ring groove 13 in a circumferential direction.
Fig. 4 is the theory structure on the present embodiment basis, worm screw 8 rotates, three turbines 9 are driven to rotate, in an initial condition, mortar board screw 11 is positioned at the square slideway 10 of turbine 9, and screw 12 is filled out by bone cement envelope in an initial condition, make cylindrical cavity 6 and isolation, when turbine 9 rotates, mortar board screw 11 and screw 12 thread fit, outwards bore out, and the effect of turbine 9 is drive mortar board screw 11 to rotate on the one hand, it is that its axial location is stablized on the other hand, makes it produce stronger tension, anti-rotational performance in conjunction with screw 12.
As shown in Figure 3, when operating, first being turned on envelope cap 4, then use screwdriver rotary worm 8, when the head of a nail of mortar board screw 11 touches the inwall of cylindrical cavity 6, worm screw just cannot continue rotation, and now mortar board screw 11 has bored into bones.
After mortar board screw 11 bores, take out screwdriver, build a certain amount of bone cement to circular sealing groove 3 place, make worm screw 8 form one with circular sealing groove 3, it is possible to prevent worm screw 8 from rotating, envelope of finally screwing on cap 4.
When removing of the present invention, envelope of outwarding winding cap 4, the bone cement filling out envelope is abolished, then retrograde rotation worm screw 8, until rotation lasts resistance is stablized, now illustrate that mortar board screw 11 has returned in the square slideway 10 of turbine 9, now follow closely the bonding force between bar body 1 and the boring of bone less, rotate or directly on carry top cap 2 and namely can be taken out.
Claims (4)
1. the sealed nail of Worm type, it is characterised in that: comprise nail bar body (1), it be built in the Worm type lock uint of nail bar body (1);
The top of described nail bar body (1) is the head of a nail (2), and the middle part of the head of a nail (2) has circular sealing groove (3); Circular sealing groove (3) internal thread is connected with envelope cap (4); The end face of envelope cap (4) all has the mutually corresponding cruciform groove in position with the end face of the head of a nail (2); The top of nail bar body (1) is for following closely bar entity (5), and the bottom of nail bar entity (5) is provided with cylindrical cavity (6), and the lower end of cylindrical cavity (6) is conical point body (7);
Described Worm type lock uint comprise vertically setting worm screw (8), at equally distributed at least two turbines (9) engaged with worm screw (8) of vertical direction; The lower end of worm screw (8) is connected with conical point body (7) rotating shaft, and the upper end of worm screw (8) penetrates nail bar entity (1) and is connected with nail bar entity (5) rotating shaft; The upper end of worm screw (8) extends in circular sealing groove (3), and the upper surface of worm screw (8) is provided with cross groove; The two ends of each turbine (9) all sidewall with cylindrical cavity (6) be rotationally connected; Each turbine (9) is all provided with square slideway (10) in axial running through, and is sliding combined with two symmetrically arranged in opposite directions mortar board screws (11) of nut in square slideway (10); Cylindrical cavity (6) coordinates each mortar board screw (11) to have screw (12).
2. the sealed nail of Worm type according to claim 1, it is characterised in that: it is filled with in screw (12) for making cylindrical cavity (6) and the bone cement of extraneous isolation.
3. the sealed nail of Worm type according to claim 1, it is characterised in that: the outer side of nail bar body (1) is frosting.
4. the sealed nail of Worm type according to claim 1, it is characterised in that: the side of the head of a nail (2) has ring groove (13) in a circumferential direction.
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 true CN105662562A (en) | 2016-06-15 |
| CN105662562B CN105662562B (en) | 2017-12-29 |
Family
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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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994038A (en) * | 2017-05-23 | 2017-08-01 | 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 | One kind remedies fixing device for vertebral arch pedicle of vertebral column broken wall |
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 (6)
| 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 |
| US20100324606A1 (en) * | 2005-08-23 | 2010-12-23 | 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 |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994038A (en) * | 2017-05-23 | 2017-08-01 | 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 | One kind remedies fixing device for vertebral arch pedicle of vertebral column broken wall |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105662562B (en) | 2017-12-29 |
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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 |