CN201353189Y - External fixer for orthopaedics - Google Patents
External fixer for orthopaedics Download PDFInfo
- Publication number
- CN201353189Y CN201353189Y CNU2009200836022U CN200920083602U CN201353189Y CN 201353189 Y CN201353189 Y CN 201353189Y CN U2009200836022 U CNU2009200836022 U CN U2009200836022U CN 200920083602 U CN200920083602 U CN 200920083602U CN 201353189 Y CN201353189 Y CN 201353189Y
- Authority
- CN
- China
- Prior art keywords
- universal joint
- connector
- ball
- trapezoidal
- external fixator
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 210000003414 extremity Anatomy 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 2
- 210000003054 facial bone Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000001696 pelvic girdle Anatomy 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model provides an external fixer for orthopaedics, comprising a clamp pin body and a clamp pin at two ends respectively, and a dual-end universal joint at the middle; two universal joint shells are connected into a whole with the clamp pin bodies at two ends respectively; each ball head of the dual-end universal joint are connected with each other by a connector; the ball head of the universal joint is arranged in a ball bowl inside the universal joint shell; a ball cap corresponding to the ball bowl is connected with the universal joint shell; the universal joint at each end is locked tightly by respective locking mechanism; the locking mechanism adopts a thread sliding block structure; the bottom of the ball bowl is an inclined surface; the inclined surface and the internal chamber of the universal joint shell form a trapezoidal chamber; a trapezoidal locking sliding block matched with the trapezoidal chamber is arranged in the trapezoidal chamber; the lower end connected with the shell in a thread way is provided with an end which is larger than the screw rod part; and the end is movably embedded in the locking sliding block. The connector is connected directly by a connecting part; alternatively, the connector is connected by 2-3 connecting parts to form a structure with adjustable angle. The ball cap and the universal joint shell are connected with each other in a thread way.
Description
Technical field
This utility model relates to a kind of orthopaedics external fixator, is used for treatment of extremity long bone shaft fracture and malformation correction, is particularly useful for the fixing of extremities joint facial bone folding, damage and pelvic ring fracture, dislocation, belongs to the medical surgical apparatus.
Background technology
Extensive use is clinical for advantages such as the external fixation of the usefulness that resets after the fracture has experienced plaster splint external fixation method, open reduction adds inner fixed law, has now developed into the fixation that external and internal fixation combines, and, damage easy and simple to handle because of it is little, stable.Existing clinical used universal ball external fixator comprises the folder needle body at two ends, and intermediary two-way universal joint is connected with the folder needle body at two ends, and each bulb of two-way universal joint all has a retaining mechanism to be contained between folder needle body and the bulb.During use, will fracture earlier resets as far as possible, and the spicule that will press from both sides again on the pin creeps into the fracture site both sides, clamps with folder pin piece.By adjusting length adjuster fracture is resetted then, can fix with retaining mechanism locking universal ball end.This external fixator is easy to use, and patient's energy early ambulant helps rehabilitation.But in use found following shortcoming: because of two retaining mechanisms of holder are to adopt eccentric shaft locking, be that the eccentric shaft outside contacts afterburning with the line of the ball bowl bottom face of universal joint, not only dynamics is limited, and it is very unstable, slide easily, cause holder loosening, cause displacement fracture, be unfavorable for growth of spur.From the mechanics angle analysis, adopt eccentric shaft locking, belong to single self-locking, poor stability.
Summary of the invention
The purpose of this utility model is the orthopaedics external fixator of a kind of good stability of design, improves the stability and the reliability of holder.
The technical solution of the utility model is achieved in that orthopaedics external fixator of the present utility model comprises the folder needle body at two ends, folder pin and intermediary both-end universal joint, two universal joint housings connect as one with the folder needle body at two ends respectively, two bulbs of both-end universal joint are connected by connector, the bulb of universal joint places in the ball bowl of universal joint housing, the ball cap corresponding with the ball bowl is connected with universal joint housing, the universal joint of every end is locked by retaining mechanism separately, retaining mechanism adopts the thread slider structure, the ball bowl bottom is the inclined-plane, the inner chamber of this inclined-plane and universal joint housing constitutes trapezoidal chamber, place trapezoidal intracavity with the trapezoidal locking slide block of trapezoidal chamber coupling, screw that is threaded with housing and trapezoidal locking slide block flexibly connect.
Described orthopaedics external fixator, there is the termination greater than shank of screw portion the lower end that its screw and trapezoidal locking slide block ways of connecting are screws, and the termination activity is embedded in the interior aerial of locking slide block.Described orthopaedics external fixator, its ball cap is threaded with universal joint housing.
Described orthopaedics external fixator, the angle of inclination, inclined-plane of its ball bowl bottom is 10～15 °.
Described orthopaedics external fixator, connector is directly connected into by 1 connector, or connector is connected into the structure of angle adjustable by 2～3 connectors.
The utility model has the advantages that: this utility model retaining mechanism adopts the thread slider structure, good stability, and non-loosening may.Ball cap also adopts with housing and is threaded, and reaches two self-lockings.Because the essential secure fixation of articular surface fracture damage, in case loosening, will cause joint function disturbance even afunction.Therefore, this utility model is specially adapted to the extremities joint facial bone and loses and injure the fixing of pelvic ring fracture, dislocation.Fixed stability and reliability have greatly been improved.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the retaining mechanism partial enlarged drawing.
Fig. 3 is the structure chart that connector is connected into by 2 connectors.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the structure chart of this utility model connector by 2 connectors.
Fig. 6 is the structure chart that connector is connected into by 3 connectors.
Fig. 7 is the structure chart of this utility model connector by 3 connectors.
Fig. 8 is the angled structural representation of folder needle body at this utility model two ends.
The specific embodiment
Describe embodiment of the present utility model below in conjunction with accompanying drawing:
As Fig. 1, Fig. 2, Fig. 3: orthopaedics external fixator of the present utility model comprises the folder needle body 1,10 and the intermediary both-end universal joint at two ends, and two bulbs 11,12 of both-end universal joint are directly connected by connector 7.The universal joint of every end has retaining mechanism separately.The structure of both-end universal joint and retaining mechanism thereof is essentially identical.
Be the concrete structure that example provides universal joint and retaining mechanism thereof with an end among the figure: bulb 11 places the ball bowl 5 in the universal joint housing 2, and the ball cap 6 corresponding with ball bowl 5 is connected and housing 2 screw threads formation bulb nest with housing 2.Retaining mechanism adopts the thread slider structure, ball bowl 5 bottoms of universal joint are inclined-planes 5.1, the inner chamber of this inclined-plane and universal joint housing 2 constitutes trapezoidal chamber 8, place in the trapezoidal chamber 8 with the locking slide block 3 of trapezoidal chamber 8 couplings, the diameter of the middle part of the universal joint screw 4 that is threaded with universal joint housing 2 nail bar 4.2 is less than bottom 4.1 and top, locking slide block 3 is enclosed within on the nail bar 4.2, screw 4 and locking slide block 3 matched in clearance, during rotary screw 4, locking slide block 3 can not rotate thereupon, and drive locking slide block 3 moving axially along screw 4 in trapezoidal chamber 8 by rotary screw 4, reach 3 extruding of locking slide block or leave ball bowl 5, ball bowl 5 is close to or leaves to bulb 11, reach the purpose that bulb 11 is locked or unclamped.Generally adjust to locking slide block 3 when folder needle body 1 axial location, locking slide block 3 compresses bulb 11 with ball bowl 5, and promptly holder is in locking state.The angle of inclination, inclined-plane of described ball bowl 5 bottoms is 10～15 °.Locking slide block 3 obverse angles of inclination also are 10～15 °.The 9th, the folder pin.Rotation ball cap 6 also can be adjusted the position and the locking state of locking slide block 3.
Connector is connected into the structure of angle adjustable by 2～3 connectors.
The structure chart that Fig. 3, Fig. 4, connector are connected into by 2 connectors.Fig. 5 is the structure chart of this utility model connector by 2 connectors.
Two bulbs 11,12 are connected with 7.2 with connector 7.1 respectively, and connector 7.1 is connected by fixture 7.4 with 7.2, unclamp the angle that fixture 7.4 is adjusted between the connector 7.1 and 7.2, lock then connector 7.1 and 7.2 is fixed.
Fig. 6 is the structure chart that connector is connected into by 3 connectors.Fig. 7 is the structure chart of this utility model connector by 3 connectors.
Two bulbs 11,12 are connected with 7.2 with connector 7.1 respectively, connector 7.1 is connected with connector 7.3 by fixture 7.4 with 7.2, unclamp 7.4 adjust connectors 7.1 and 7.2 and connector 7.3 between angle, by three connectors of fixture 7.4 lockings, fixing then with 7.1 and 7.2,7.3.Present embodiment is suitable for encircling the fixing of fracture, dislocation before the pelvis.
Fig. 9 is the angled embodiment of folder needle body at this utility model two ends: its structure and Fig. 1 are basic identical, just change the position that an end bulb enters universal joint housing 2, make the angled α of folder needle body at two ends.General α is more than or equal to 90 °
The following describes using method of the present utility model: for extremity and articular surface fracture damage location, after at first needing manual reduction to make that fracture and damage articular surface recover, again spicule is penetrated cortical bone both sides and fracture two ends, then lay the folder needle lock, locking folder pin; Adjust satisfaction back locking universal joint screw 4,, make it reach reliable and stable fixing because of it adopts the screw thread self-locking, carves the promptly two self-lockings of block self locking.
Claims (6)
1. orthopaedics external fixator, the folder needle body that comprises two ends, folder pin and intermediary both-end universal joint, two universal joint housings connect as one with the folder needle body at two ends respectively, two bulbs of both-end universal joint are connected by connector, the bulb of universal joint places in the ball bowl of universal joint housing, the ball cap corresponding with the ball bowl is connected with universal joint housing, the universal joint of every end is locked by retaining mechanism separately, it is characterized in that: retaining mechanism adopts the thread slider structure, ball bowl (5) bottom is the inclined-plane, the inner chamber of this inclined-plane and universal joint housing (2) constitutes trapezoidal chamber (8), place in the trapezoidal chamber (8) with the trapezoidal locking slide block (3) of trapezoidal chamber (8) coupling, the lower end of the screw (4) that is threaded with housing (2) and trapezoidal locking slide block (3) flexibly connect.
2. orthopaedics external fixator according to claim 1, it is characterized in that: screw (4) with trapezoidal locking slide block (3) ways of connecting is: there is the termination (4.1) greater than screw (4) bar portion the lower end of screw (4), and termination (4.1) activity is embedded in the interior aerial of locking slide block (3).
3. orthopaedics external fixator according to claim 1 and 2 is characterized in that: ball cap (6) is threaded with universal joint housing (2).
4. orthopaedics external fixator according to claim 1 and 2 is characterized in that: the angle of inclination on the inclined-plane of ball bowl (5) bottom is 10～15 °.
5. orthopaedics external fixator according to claim 1 and 2 is characterized in that: connector is directly connected into by 1 connector.
6. orthopaedics external fixator according to claim 1 and 2 is characterized in that: connector is connected into the structure of angle adjustable by 2～3 connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200836022U CN201353189Y (en) | 2009-02-05 | 2009-02-05 | External fixer for orthopaedics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200836022U CN201353189Y (en) | 2009-02-05 | 2009-02-05 | External fixer for orthopaedics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201353189Y true CN201353189Y (en) | 2009-12-02 |
Family
ID=41409530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200836022U Expired - Lifetime CN201353189Y (en) | 2009-02-05 | 2009-02-05 | External fixer for orthopaedics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201353189Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105434014A (en) * | 2015-12-30 | 2016-03-30 | 天津普生元医疗科技发展有限公司 | Front rotating head assembly of a hemorrhoid ligation device |
| CN106510822A (en) * | 2016-10-18 | 2017-03-22 | 熊鹰 | Combined drifting minimally-invasive internal fixation device for pelvis |
| CN108577950A (en) * | 2018-05-04 | 2018-09-28 | 北京工业大学 | A kind of adjustable unilateral external fixator of dynamic |
| CN110811798A (en) * | 2019-11-27 | 2020-02-21 | 张浩然 | External fixator for limb fracture |
| CN111281506A (en) * | 2020-03-10 | 2020-06-16 | 山东航维骨科医疗器械股份有限公司 | External fixing frame for orthopedics department |
| CN113509308A (en) * | 2021-04-23 | 2021-10-19 | 北京中安泰华科技有限公司 | Universal multipurpose fixing clamp |
| JP2023000413A (en) * | 2021-06-17 | 2023-01-04 | Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 | interframe fixator |
| CN117679133A (en) * | 2023-12-18 | 2024-03-12 | 常州君华医疗科技有限公司 | A multifunctional pelvic external fixation connecting frame |
-
2009
- 2009-02-05 CN CNU2009200836022U patent/CN201353189Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105434014A (en) * | 2015-12-30 | 2016-03-30 | 天津普生元医疗科技发展有限公司 | Front rotating head assembly of a hemorrhoid ligation device |
| CN106510822A (en) * | 2016-10-18 | 2017-03-22 | 熊鹰 | Combined drifting minimally-invasive internal fixation device for pelvis |
| CN106510822B (en) * | 2016-10-18 | 2023-08-01 | 熊鹰 | Combined pelvis drift minimally invasive internal fixing device |
| CN108577950B (en) * | 2018-05-04 | 2021-02-02 | 北京工业大学 | Dynamic adjustable single-side external fixator |
| CN108577950A (en) * | 2018-05-04 | 2018-09-28 | 北京工业大学 | A kind of adjustable unilateral external fixator of dynamic |
| CN110811798A (en) * | 2019-11-27 | 2020-02-21 | 张浩然 | External fixator for limb fracture |
| CN110811798B (en) * | 2019-11-27 | 2022-06-07 | 张浩然 | External fixator for limb fracture |
| CN111281506A (en) * | 2020-03-10 | 2020-06-16 | 山东航维骨科医疗器械股份有限公司 | External fixing frame for orthopedics department |
| CN113509308A (en) * | 2021-04-23 | 2021-10-19 | 北京中安泰华科技有限公司 | Universal multipurpose fixing clamp |
| CN113509308B (en) * | 2021-04-23 | 2024-02-09 | 北京中安泰华科技有限公司 | Universal multipurpose fixing clamp |
| JP2023000413A (en) * | 2021-06-17 | 2023-01-04 | Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 | interframe fixator |
| JP7737130B2 (en) | 2021-06-17 | 2025-09-10 | Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 | Interframe fixator |
| CN117679133A (en) * | 2023-12-18 | 2024-03-12 | 常州君华医疗科技有限公司 | A multifunctional pelvic external fixation connecting frame |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201353189Y (en) | External fixer for orthopaedics | |
| US9066757B2 (en) | Orthopedic external fixator and method of use | |
| EP1023873A3 (en) | Spinal fixation system | |
| CN103417278B (en) | Proximal humerus T-shaped outer fixator | |
| CN109965960A (en) | A digital adjustable bone orthopedic external fixator with detachable motor | |
| CN203873851U (en) | Portable external fracture fixing device | |
| CN102018557B (en) | External fixation bracket with pressurized thread for orthopedics | |
| CN106691556B (en) | Fracture multi-directional reduction external fixator | |
| CN209864003U (en) | Digital adjustable bone orthopedic external fixing frame with detachable motor | |
| CN105726108B (en) | A kind of bone-holder for orthopaedics Minimally Invasive Surgery | |
| CN102813544B (en) | External fixing rack for hip fracture | |
| CN203677225U (en) | External fixing device for emergency treatment recovery of limb long-pipe-bone | |
| WO2008142678A2 (en) | Multidirectional bone fixation assembly | |
| CN103654934B (en) | For blade plate combined locking screw and comprise its bone plate system | |
| CN218391236U (en) | External fixing frame device for fracture reduction | |
| WO2015117207A1 (en) | Tightening joints for versatile modular systems for osteosynthesis | |
| CN107582156B (en) | Connector and fixation system for pedicle screws | |
| KR20060055640A (en) | Spinal screw fixing device using minimally invasive method | |
| CN211460462U (en) | Unilateral external fixation support | |
| CN201684011U (en) | Percutaneous minimally invasive lumber vertebral pedicle screw fixing system and matching machine | |
| CN110269671B (en) | Digital adjustable bone orthopedic external fixation frame with detachable motor | |
| CN201624764U (en) | Orthopedic external fixing device | |
| CN103070725A (en) | Minimally invasive extension jib pedicle screw | |
| CN216495585U (en) | Anatomical sternoclavicular joint bone fracture plate and sternoclavicular joint internal fixation system | |
| CN201168095Y (en) | Dynamic fixator for bone joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: KAN WUSHENG LI SHAOGANG Effective date: 20140107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140107 Address after: 430080 No. 35 metallurgical Avenue, Qingshan District, Hubei, Wuhan Patentee after: Wuhan Penglai Technology Development Co., Ltd. Address before: 430080 No. 35 metallurgical Avenue, Qingshan District, Hubei, Wuhan Patentee before: Wuhan Penglai Technology Development Co., Ltd. Patentee before: Kan Wusheng Patentee before: Li Shaogang |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151127 Address after: Tangqiao town west ring road of Zhangjiagang city in Jiangsu province 215600 (Luyuan section) Patentee after: Suzhou Kangli Orthopedics Instrument Co., Ltd. Address before: 430080 No. 35 metallurgical Avenue, Qingshan District, Hubei, Wuhan Patentee before: Wuhan Penglai Technology Development Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |
Address after: 215616 Luyuan West Ring Road (Nanyuan East Road), Tangqiao Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Suzhou Kangli Orthopedics Instrument Co., Ltd. Address before: 215600 West Ring Road (Luyuan section), Tong Qiao Town, Zhangjiagang, Jiangsu Patentee before: Suzhou Kangli Orthopedics Instrument Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091202 |
|
| CX01 | Expiry of patent term |