CN200987701Y - Multilayer locking bone fracture fixation plate - Google Patents
Multilayer locking bone fracture fixation plate Download PDFInfo
- Publication number
- CN200987701Y CN200987701Y CN 200620052674 CN200620052674U CN200987701Y CN 200987701 Y CN200987701 Y CN 200987701Y CN 200620052674 CN200620052674 CN 200620052674 CN 200620052674 U CN200620052674 U CN 200620052674U CN 200987701 Y CN200987701 Y CN 200987701Y
- Authority
- CN
- China
- Prior art keywords
- screw
- expansion sleeve
- bone fracture
- plate
- locking bone
- 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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Abstract
The utility model discloses a multi-layer locking plate, including a multi-layer locking plate, a screw and an expansion sleeve which can be sleeved at the screw. The locking plate is provided with a positive stop hole with inversed taper. The utility model is an improvement of the present locking plate, and is characterized in that the screw forms a close and stable structure with a fixation plate through the cooperation with the expansion sleeve. Applying the positive stop function of the positive stop hole with inversed taper on the fixation plate for the expansion sleeve achieves the aim that the screw can't be pulled out after the automatic fixation. The tighter the screw, the bigger the pressure facing with the screw and the expansion sleeve is. The more stable the structure of the screw and the plate body is, the better the fixation effect is. The device suits in particular to the trauma operation of the surgery.
Description
Technical field
This utility model relates to the multiple field locking bone fracture plate, is specifically related to a kind of screw and cooperates with the inverted cone inflatable sleeves, and the multiple field blade plate is connected with skeleton and fixes.
Background technology
A kind of screw locking bone fracture plate is arranged at present, and it is to be processed with pre-threaded on blade plate nail hole, uses with the ready-formed threaded engagement in the screw ailhead outside, make screw can independent stationary on blade plate.
The deficiency of this device is, the one or more qualified prefabricated band female threads nail of processing processing hole on sheet material, and difficulty of processing is big, the processing cost height.
(sheet material is subjected to the external force effect to elastic modelling quantity between the blade plate nail hole, bending deformed ability.), can only be by material, the material decision of sheet material.The main material of existing orthopaedics implant: the elastic modelling quantity of pure titanium and titanium alloy is 10 times of skeleton; The elastic modelling quantity of medical stainless steel is 16 times of skeleton.
After installing locking bone fracture plate, when the skeleton two ends were stressed, active force mainly conducted by the bigger material of elastic modelling quantity, and elastic modelling quantity is big more, the external force of sharing is big more, causes easily that therefore blade plate, screw fracture or screw is pulled out, and influences fixed effect or causes operative failure.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, and by changing the physical form and the screw lock mode of sheet material, simulation changes the elastic modelling quantity between the screw, makes the mimic elastic modelling quantity of blade plate more near the elastic modelling quantity of skeleton.
Farthest avoid blade plate, screw to fracture or screw is pulled out.
After installing the multiple field locking bone fracture plate, when the skeleton two ends are stressed, the multi-layer sheet between the nail hole of blade plate, small crooked or distortion can take place, and the fine motion that fracture site is produced is near the fine motion of skeleton self, help the growth of the skeleton broken ends of fractured bone, can shorten healing time.
The realization the technical solution of the utility model is: the multiple field locking bone fracture plate is made up of multiple field locking bone fracture plate, screw and the expansion sleeve that can be enclosed within on the screw, and described multiple field locking bone fracture plate is provided with reverse taper hole.
Use of the present utility model, as the multilamellar locking bone fracture plate is fixed on the skeleton, earlier the multiple field locking bone fracture plate is placed on the skeleton, expansion sleeve is put into the blade plate screw hole, screw is screwed into expansion sleeve, when tightening screw, screw swells expansion sleeve, expansion sleeve is stuck in the hole of blade plate, and screw and expansion sleeve closely form the integral body of a rock-steady structure, make screw go deep into skeleton (boring deep bone usually) simultaneously.
Because the hole on the blade plate plate is the inverted cone design, expansion sleeve is subjected to the outside extruding of screw.Expansion sleeve expands, be stuck in expansion sleeve in the hole be subjected to blade plate the plate hole wall restriction and can't withdraw from, so just can prevent from when screw is subjected to outside pulling force, to be pulled out and.
Further technical scheme is:
Screw can be provided with the screw thread that matches with screw in the expansion sleeve, so that can be screwed into better in expansion sleeve; The shape of expansion sleeve can be inverted cone, and expansion sleeve is stuck in the plate hole of blade plate better; Can have the expansion slit on the jacket wall of expansion sleeve, help the expansion of expansion sleeve.
Around the plate hole of multiple field locking bone fracture plate, be subjected to the pressurization in opposite directions of head of screw and expansion sleeve, multiple structure is compressed into and is similar to an overall structure, and the inherent elastic modelling quantity of elastic modelling quantity and material is close.
Between the plate hole of two adjacent multiple field locking bone fracture plates, blade plate then shows multiwalled physical characteristic, and certain clearance is arranged between every layer, when the extruding that is subjected to external force, every layer allows small flexural deformation, thereby reaches the effect that simulation changes the blade plate elastic modelling quantity.
This utility model is the improvement to existing screw locking bone fracture plate, be characterized in that screw is by forming tight rock-steady structure with cooperating with blade plate of expansion sleeve, utilize on the multiple field locking bone fracture plate, the inverted cone spacing hole is to the position-limiting action of expansion sleeve, realizes that screw is difficult to be pulled out the purpose of coming after fastening autonomous.And screw is tightly more stubborn, and screw and expansion sleeve pressure in opposite directions is big more, and the structure of screw and plate body is stable more, and fixed effect is good more.
Plate is as multiple structure, and when the extruding that is subjected to external force, every layer allows small flexural deformation, does not change the blade plate material thereby reach, and by blade plate being designed, manufactures multilayer form, produces the effect that simulation changes the blade plate elastic modelling quantity.
Further specify the technical solution of the utility model below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is result of use figure of the present utility model.
The specific embodiment
See Fig. 1, the autonomous fixed combination device of screw is made up of multiple field locking bone fracture plate 1, screw 5 and the expansion sleeve 3 that can be enclosed within on the screw 5, on blade plate 1, be provided with inverted cone position-arresting hole 2, expansion sleeve 3 be shaped as inverted cone, be provided with the screw thread that matches with screw 5 in it, have expansion slit 4 on the jacket wall.Expansion sleeve 3 can adopt metal or other material.
Result of use of the present utility model as shown in Figure 2, when screw 5 is tightened on skeleton 6 and 7, expansion sleeve 3 expands, open in dilatation joint 4 cracks on the jacket wall, screw 5, expansion sleeve 3 and blade plate 1 are combined closely into an integral body, the inverted cone spacing hole makes screw 5 can not be pulled out to the position-limiting action of expansion sleeve 3 on the blade plate 1, with this screw and expansion sleeve blade plate 1 firmly is fixed on skeleton 6 and 7.
Claims (6)
1, multiple field locking bone fracture plate comprises screw and the expansion sleeve that can be enclosed within on the screw, it is characterized in that also comprising the multiple field locking bone fracture plate, and blade plate is provided with the inverted cone spacing hole.
2, multiple field locking bone fracture plate according to claim 1 is characterized in that plate is as 2 layers or multiple structure.
3, multiple field locking bone fracture plate according to claim 1 is characterized in that being provided with in the expansion sleeve screw thread that matches with screw.
4, multiple field locking bone fracture plate according to claim 1 is characterized in that the inverted cone that is shaped as of expansion sleeve.
5, multiple field locking bone fracture plate according to claim 1 is characterized in that having the expansion slit on the jacket wall of expansion sleeve.
6, multiple field locking bone fracture plate according to claim 1 is characterized in that having on the plate body inverted cone spacing hole more than 2 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052674 CN200987701Y (en) | 2006-10-31 | 2006-10-31 | Multilayer locking bone fracture fixation plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052674 CN200987701Y (en) | 2006-10-31 | 2006-10-31 | Multilayer locking bone fracture fixation plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200987701Y true CN200987701Y (en) | 2007-12-12 |
Family
ID=38938747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620052674 Expired - Fee Related CN200987701Y (en) | 2006-10-31 | 2006-10-31 | Multilayer locking bone fracture fixation plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200987701Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102670291A (en) * | 2012-05-29 | 2012-09-19 | 开平市中心医院 | Inferior tibiofibular bolt elastic fixing device |
| CN106983551A (en) * | 2017-05-12 | 2017-07-28 | 国家康复辅具研究中心 | Porous complex bone plate of rigidity gradient change and preparation method thereof |
| CN106346276B (en) * | 2016-11-11 | 2018-08-24 | 上海第一机床厂有限公司 | The clamping device of porous plate |
-
2006
- 2006-10-31 CN CN 200620052674 patent/CN200987701Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102670291A (en) * | 2012-05-29 | 2012-09-19 | 开平市中心医院 | Inferior tibiofibular bolt elastic fixing device |
| CN102670291B (en) * | 2012-05-29 | 2014-01-29 | 开平市中心医院 | Inferior tibiofibular bolt elastic fixing device |
| CN106346276B (en) * | 2016-11-11 | 2018-08-24 | 上海第一机床厂有限公司 | The clamping device of porous plate |
| CN106983551A (en) * | 2017-05-12 | 2017-07-28 | 国家康复辅具研究中心 | Porous complex bone plate of rigidity gradient change and preparation method thereof |
| CN106983551B (en) * | 2017-05-12 | 2019-06-14 | 国家康复辅具研究中心 | The porous complex bone plate and preparation method thereof of rigidity gradient variation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: TAN WEI LU MING ^ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Qin Wei |Lu Ming Number: 50 Page: The title page Volume: 23 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Qin Wei |Lu Ming Number: 50 Volume: 23 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ^ TO: TAN WEI LU MING ^ |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |