CN2190972Y - Internal fixator for fracture - Google Patents
Internal fixator for fracture Download PDFInfo
- Publication number
- CN2190972Y CN2190972Y CN 94240332 CN94240332U CN2190972Y CN 2190972 Y CN2190972 Y CN 2190972Y CN 94240332 CN94240332 CN 94240332 CN 94240332 U CN94240332 U CN 94240332U CN 2190972 Y CN2190972 Y CN 2190972Y
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- CN
- China
- Prior art keywords
- screw
- steel plate
- fracture
- nut
- 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 relates to an internal fixation device for fracture, which is characterized in that each of both ends of a steel plate 1 is provided with one group of screw holes 3 and one group of screw holes 5; at least one screw nut 4 which is integrated with the steel plate 1 is arranged at the position corresponding to the screw holes 5, and fixing screws 2 are arranged at the other positions; the interior of the screw nut 4 is cooperated with a fixing screw 6; the fixing screws 2 are arranged in the screw holes 3. The fixation device can carry out fracture fixation in three directions and has the characteristics of folding resistance, torsion resistance, uniform pressurization, firm fixation, less tissue injury, convenient operation, etc. The utility model can be used for the fixation of T-shaped fracture and Y-shaped fracture of the lower end of a femur, and flat fracture of a tibia, and is an ideal internal fixation device for promoting the contact healing of fracture.
Description
This utility model provides a kind of bone fracture internal fixing device, belongs to medical instruments field.
The inner fixing device of current domestic existing multiple distal part of femur, as " L " shaped steel plate, T-shape steel plate, they are bigger to soft tissue injury, and the broken ends of fractured bone lobe bone piece far away that the femur T-shape is fractured does not have horizontal squeezing action, fixedly owes firm; The A090 steel plate, its curved shank steel plate does not have horizontal squeezing action to broken ends of fractured bone stringer splitting bone piece far away, and is bigger to the osseous tissue damage, easily causes the sclerite splitting, and steel plate and the non-one of bone bolt, and twisting resistance is poor, and is fixing not firm; The utility model patent of Chinese patent communique announcement on April 29th, 1992: powerful pressurized bone plate, applicant: Liu Keqiang, the applying date: on October 25th, 91, application number: 91227440, form by steel plate and secured adjusted bolt or hold-down screw, the two ends of steel plate or an end have harrow nail, bolt hole or screw hole are arranged on the steel plate, have anti-folding, bending resistance, characteristics such as anti-twist, but the harrow nail of internal fixation, fracture is not still had squeezing action, and internally the side seam piece is fixing not firm.
The purpose of this utility model provide a kind of anti-folding, anti-twist, pressurization evenly, fixation, the bone fracture internal fixing device little and easy to operate to tissue injury.
The purpose of this utility model is achieved in that
A kind of bone fracture internal fixing device, it is characterized in that: be respectively equipped with one group of screw 3 and one group of screw 5 at the two ends of steel plate 1, have one and steel plate 1 all-in-one-piece nut 4 at least corresponding to screw 5 places, remaining installs and fixes screw 2, cooperate hold-down screw 6 in the nut 4, screw 3 places install and fix screw 2.
Described bone fracture internal fixing device, there are two screws 5 lower end of steel plate 1, corresponding to screw 5 have a pair of and the parallel nut of steel plate 1 all-in-one-piece or/there are two screws 5 lower end of steel plate 1, on its next screw be one with steel plate 1 all-in-one-piece screw 4, screw installs and fixes screw 2 in addition.
Described bone fracture internal fixing device has screw thread in the nut 4, and nut 4 can become various angles with steel plate 1, and angle can be 80 °, 90 °, 100 °, 110 and do not wait model.
This utility model bone fracture internal fixing device compared with prior art, have following advantage: nut 4 is integral with steel plate 1 and can prevents to reverse, little to the osseous tissue damage, adopt screw 6 covers to add packing ring 7 simultaneously and be screwed into nut 4, realized extruding, and reduced stimulation medial collateral ligament to the broken ends of fractured bone far away of fracturing from the bone offside, and it is fixing with screw 2 at the sclerite nearside, realization guarantees that from the fixing fracture of three directions fixedly labor is leaned on, and promotes the contact healing of fracture.
Fig. 1 is the structural representation of this utility model bone fracture internal fixing device;
Fig. 2 is the use sketch map of this utility model bone fracture internal fixing device;
Among the figure: 1 steel plate, 2 hold-down screws, 3 screws, 4 nuts, 5 screws, 6 hold-down screws, 7 packing rings.
Below in conjunction with accompanying drawing this utility model is described further:
According to this utility model bone fracture internal fixing device that Fig. 1 makes, steel plate 1L section shape and steel plate 1 design with the epiphysis profile with the angle of nut 4.During use, be driven into outside distal bone folded block with additional screws from screw 5 earlier, transfer to additional screws then, get through the bone road along nut 4 usefulness diameters with the osseous pin of nut internal diameter, be driven into hold-down screw 6 along the bone road from the bone offside, hold-down screw 6 is tightened with nut 4 and has been fixed the fracture broken ends of fractured bone far away, and reuse hold-down screw 2 is driven into the nearside sclerite from screw 3, has realized the internal fixation of fracture; Another specific embodiments of the present utility model: there are two screws 5 lower end of steel plate 1, is one and steel plate 1 all-in-one-piece nut 4 on its next screw, and screw installs and fixes screw 2 in addition.During use, get through bone road with the osseous pin of nut 4 internal diameters from the next screw with diameter, be driven into hold-down screw 6 and tighten from the bone offside along the bone road with nut 4, be driven into hold-down screw 2 at other screw 5 places, so just fixed the together broken ends of fractured bone far away of fixing fracture, reuse hold-down screw 2 is driven into the nearside sclerite from screw 3, the final internal fixation of realizing fracture.
Claims (4)
1, a kind of bone fracture internal fixing device, it is characterized in that: be respectively equipped with one group of screw (3) and one group of screw (5) at the two ends of steel plate (1), locate to have at least one and steel plate (1) all-in-one-piece nut (4) corresponding to screw (5), remaining installs and fixes screw (2), cooperate hold-down screw (6) in the nut (4), screw (3) locates to install and fix screw (2).
2, bone fracture internal fixing device as claimed in claim 1 is characterized in that: there are two screws (5) lower end of steel plate (1), is one and steel plate (1) all-in-one-piece screw (4) on its next screw, and screw installs and fixes screw (2) in addition.
3, bone fracture internal fixing device as claimed in claim 1 is characterized in that: there are two screws (5) lower end of steel plate (1), corresponding to screw (5) a pair of and the parallel nut of steel plate (1) all-in-one-piece (4) is arranged.
4, as claim 1,2,3 described bone fracture internal fixing devices, it is characterized in that: nut has screw thread in (4), and nut (4) can become various angles with steel plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94240332 CN2190972Y (en) | 1994-04-29 | 1994-04-29 | Internal fixator for fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94240332 CN2190972Y (en) | 1994-04-29 | 1994-04-29 | Internal fixator for fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2190972Y true CN2190972Y (en) | 1995-03-08 |
Family
ID=33847341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94240332 Expired - Fee Related CN2190972Y (en) | 1994-04-29 | 1994-04-29 | Internal fixator for fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2190972Y (en) |
-
1994
- 1994-04-29 CN CN 94240332 patent/CN2190972Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |