CN204016465U - A kind of ilium nail of variable-angle - Google Patents
A kind of ilium nail of variable-angle Download PDFInfo
- Publication number
- CN204016465U CN204016465U CN201420383030.0U CN201420383030U CN204016465U CN 204016465 U CN204016465 U CN 204016465U CN 201420383030 U CN201420383030 U CN 201420383030U CN 204016465 U CN204016465 U CN 204016465U
- Authority
- CN
- China
- Prior art keywords
- nail
- head
- ilium
- variable
- angle
- 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 - Lifetime
Links
- 210000003692 ilium Anatomy 0.000 title claims abstract description 22
- 230000004899 motility Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
This utility model relates to a kind of ilium nail of variable-angle, comprising the head of a nail, screw, collar and back-up ring.The described head of a nail is frustum cone structure, inner hollow, and top is provided with female thread therein, and at the mounting hole being upwards provided with in week for connecting side direction connection or pitman.Described screw head is spherical structure, has step on the top of spherical structure, by elastic ring jump ring, screw head is snapped in the head of a nail.The ilium nail of this utility model variable-angle, Stability Analysis of Structures, mechanical property are good, can convert required angle according to operation actual demand, and motility is good.
Description
Technical field
This utility model relates to a kind of ilium nail of variable-angle, belongs to technical field of medical instruments.
Background technology
Internal fixation of spine technology has nowadays been used maturation.The development of internal fixation of spine technology is mainly for meeting the needs of backbone correcting, since the first neck bone fusion of 1891, be developed so far, by the initial utilization that rigidly fixes semi-rigid fixing and power fixed system finally, jointly improve and perfect internal fixation of spine art.Power fixed system is soft fixing or flexible fixing, and spinal motion is ensured in controlled range, can limit the abnormal motion of spinal column, can change again the load pattern of spinal motion segment, alleviates its pressure, is to use at present more fixation.
For the spinal internal fixation system of the breast waist way of escape, ilium nail whole fixed system in the time that it is fixed on ilium used causes larger pressure to it, in the situation that angle can not be adjusted, the pressure of whole system will there will be the state that concentrates on certain point, when serious, can cause damage to ilium.Therefore, modern internal fixation of spine art, has higher requirement in its application to ilium nail.
Utility model content
This utility model, for the shortcoming and defect of above-mentioned ilium staple, provides a kind of ilium nail of variable-angle.
The purpose of this utility model is to realize by following structure:
A kind of ilium nail of variable-angle, comprises the head of a nail and screw, it is characterized in that the head of a nail is frustum cone structure, inner hollow, and inner and upper is provided with female thread, is upwards provided with the mounting hole for connecting side direction pitman in week; Described screw is located in the hollow structure of the head of a nail by back-up ring and collar.
Described back-up ring has hemispherical inner chamber, and step that can housing screw head, provides stable frictional force, housing screw head.
The utility model has the advantages that:
This utility model can be at certain angular range translation-angle as required, and the head of a nail is rotatable, need not consider screw length.In the time that it is subject to place internal fixation system to his pressure, make each parts contact good by self structure, dispersive stress is concentrated, and makes the internal fixation system at its place stressed more even.This utility model need to punch according to performing the operation on the ilium of relevant position, tapping, the ilium nail that select diameter, is of convenient length screws in corresponding position, then convert as required head of a nail angle and connect side direction adapter or pitman, easy to operate, save operating time, improve stability and the reliability of internal fixation system.
Brief description of the drawings
With reference to the accompanying drawings this utility model is described in further detail below.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is axle side schematic diagram of the present utility model.
Fig. 3 is the schematic diagram after assembling of the present utility model.
Fig. 4 is angular transformation schematic diagram of the present utility model.
Fig. 5 is the schematic diagram of fixed angle ilium nail of the prior art (0 °).
Fig. 6 is the schematic diagram of fixed angle ilium nail of the prior art (α).
In figure:
1-head of a nail; The female thread of 1a-head of a nail; The mounting hole of 1b-head of a nail; 2-back-up ring; The hemispherical inner chamber of 2a-back-up ring; 3-collar; 4-screw; The step of 4a-screw head; The spherical structure of 4b-screw head.
Specific embodiments
Below in conjunction with Figure of description, the utility model is described in further detail.
As shown in Figure 1, a kind of ilium nail of variable-angle, comprises the head of a nail 1 and screw 4.The frustum cone structure that the head of a nail 1 is enclosed shape, inner hollow, inner and upper has female thread 1a, at the mounting hole 1b being upwards provided with in week for connecting side direction pitman; Screw head is a spherical structure 4b, has step 4a on the top of spherical structure.Described screw is located in the hollow structure of the head of a nail by back-up ring 2 and collar 3.
Described back-up ring 2 has hemispherical inner chamber 2a, has a through hole at the top of back-up ring.Described collar 3 is one to have elastic annular spring.
Described back-up ring hemispherical inner chamber 2a can housing screw head step 4a, provide stable frictional force, with the spherical structure 4b of housing screw head.Described collar 3 is annular spring, has certain elasticity, screw spherical head 4b can be snapped in the head of a nail, and screw can not be exited.
Fig. 5, Fig. 6 are the comparison diagram of this utility model and existing fixed angle ilium nail, by contrast, this utility model can be in certain angular range translation-angle as required, and the head of a nail can rotate, and need not consider length.
This utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection domain of the present utility model.
Claims (4)
1. the ilium of variable-angle nail, comprises the head of a nail and screw, it is characterized in that the head of a nail is round platform mechanism, inner hollow, and inner and upper is provided with female thread, is upwards provided with the mounting hole for connecting side direction pitman in week; Described screw is located in the hollow structure of the head of a nail by back-up ring and collar.
2. the ilium of a kind of variable-angle according to claim 1 nail, is characterized in that described screw head is a spherical structure, is provided with step on the top of spherical structure.
3. the ilium of a kind of variable-angle according to claim 1 nail, is characterized in that described back-up ring has hemispherical inner chamber, is provided with a through hole at the top of back-up ring.
4. the ilium of a kind of variable-angle according to claim 1 nail, is characterized in that described collar is to have elastic annular spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383030.0U CN204016465U (en) | 2014-07-11 | 2014-07-11 | A kind of ilium nail of variable-angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383030.0U CN204016465U (en) | 2014-07-11 | 2014-07-11 | A kind of ilium nail of variable-angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204016465U true CN204016465U (en) | 2014-12-17 |
Family
ID=52056392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420383030.0U Expired - Lifetime CN204016465U (en) | 2014-07-11 | 2014-07-11 | A kind of ilium nail of variable-angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204016465U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030313A (en) * | 2015-08-12 | 2015-11-11 | 嘉兴德康医疗器械有限公司 | Magnetic navigation pedicle screw |
| CN105125275A (en) * | 2015-09-16 | 2015-12-09 | 常州市康辉医疗器械有限公司 | Semi-opened and semi-closed spine ilium bolt |
| CN105496540A (en) * | 2016-01-20 | 2016-04-20 | 北京大学深圳医院 | Iliac screw with bone induction material coating and spine fixing device |
| CN111248992A (en) * | 2019-05-05 | 2020-06-09 | 浙江德康医疗器械有限公司 | Multifunctional screw |
-
2014
- 2014-07-11 CN CN201420383030.0U patent/CN204016465U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030313A (en) * | 2015-08-12 | 2015-11-11 | 嘉兴德康医疗器械有限公司 | Magnetic navigation pedicle screw |
| CN105030313B (en) * | 2015-08-12 | 2017-07-28 | 浙江德康医疗器械有限公司 | A kind of magnetic navigation pedicle nail |
| CN105125275A (en) * | 2015-09-16 | 2015-12-09 | 常州市康辉医疗器械有限公司 | Semi-opened and semi-closed spine ilium bolt |
| CN105496540A (en) * | 2016-01-20 | 2016-04-20 | 北京大学深圳医院 | Iliac screw with bone induction material coating and spine fixing device |
| CN111248992A (en) * | 2019-05-05 | 2020-06-09 | 浙江德康医疗器械有限公司 | Multifunctional screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 314003, No. 1-2, building 8, Shanghai Jiaotong University (Jiaxing) Science Park, No. 321, Chong Chong Road, Xiuzhou District, Zhejiang, Jiaxing Patentee after: ZHEJIANG DECANS MEDICAL INSTRUMENT CO.,LTD. Address before: 314000, building 212, R & D building, Shanghai Jiaotong University (Jiaxing) Science Park, No. 321, Chong Chong Road, Xiuzhou District, Zhejiang, Jiaxing Patentee before: JIAXING DEKANG MEDICAL DEVICES Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Angle-changeable ilium nail Effective date of registration: 20161101 Granted publication date: 20141217 Pledgee: Agricultural Bank of China Limited by Share Ltd. Jiaxing science and Technology Branch Pledgor: ZHEJIANG DECANS MEDICAL INSTRUMENT CO.,LTD. Registration number: 2016330000084 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211011 Granted publication date: 20141217 Pledgee: Agricultural Bank of China Limited by Share Ltd. Jiaxing science and Technology Branch Pledgor: ZHEJIANG DECANS MEDICAL INSTRUMENT Co.,Ltd. Registration number: 2016330000084 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141217 |
|
| CX01 | Expiry of patent term |