CN205031357U - Immediately, hip screw pulling force screw for steel sheet pressurizes - Google Patents
Immediately, hip screw pulling force screw for steel sheet pressurizes Download PDFInfo
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- CN205031357U CN205031357U CN201520386611.4U CN201520386611U CN205031357U CN 205031357 U CN205031357 U CN 205031357U CN 201520386611 U CN201520386611 U CN 201520386611U CN 205031357 U CN205031357 U CN 205031357U
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- screw
- pulling force
- hip
- lag screw
- pressurization
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Abstract
The utility model relates to the technical field of medical equipment, especially, relate to an immediately, hip screw pulling force screw for steel sheet pressurizes, include: pulling force screw somatic part and pulling force screw thread portion, pulling force screw somatic part is equipped with tooth. The utility model provides an immediately, hip screw pulling force screw for steel sheet pressurizes, through pulling force screw somatic part set up a plurality of can with the screw looks engaging tooth tooth on the compression screw, meshing between messenger's pulling force screw and the compression screw no longer relies on the screw thread of pulling force screw self, the linear pressurization that fracture department is showing can produce, and this kind of pressurization is direct the continuation effectively and the controllable pressurization, be favorable to the healing of fracture, fundamentally has stopped DHS because of the excessive internal fixation failure of sliding and leading to.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly relates to a kind of instant pressurization hip screw steel plate lag screw.
Background technology
Intertrochanteric fracture of the femur is mainly in elderly patient, and Elderly patients osteoporosis also becomes a large reason of intertrochanteric fracture of the femur.Intertrochanteric fracture of the femur is one of modal fracture of old people, and mortality rate is high.Early operation contributes to reducing complication, reduces mortality.The method of current treatment intertrochanteric fracture of the femur is more, as gusset internal fixtion, condyle plate internal fixtion, hip screw internal fixtion, self-locking nail internal fixtion, dynamic hip screw fix, Richard pegboard systems etc.The multiformity of Therapeutic Method highlights the difficulty of this type of injury in treating, and therefore correct treatment Elderly patients intertrochanteric fracture of the femur is the important topic that each orthopedist will face.
In the above-mentioned methods, dynamic hip screw is fixedly method relatively more conventional clinically at present.Dynamic hip screw is followed closely by sliding compression screw, sleeve blade plate, tail pressurized screw and blade plate and is formed.Dynamic hip screw drive screw slides along sleeve, produces dynamic property follow-up pressurization, increase fractures stability, promote union of fracture fracture end.But find in use practice, dynamic hip screw fixedly there will be excessive slip, causes Unstable internal fixation.
Utility model content
The technical problems to be solved in the utility model is: engage poor problem to solve between lag screw with the forcing screw for the lag screw that pressurizes, this utility model provides a kind of instant pressurization hip screw steel plate lag screw, being provided with several by lag screw body can with the threaded engagement teeth on forcing screw, make to engage the screw thread no longer relying on lag screw self between lag screw with forcing screw, fracture can be produced linearly pressurize significantly, and this pressurization is direct continuous and effective and controllable pressurization, be conducive to the healing of fracturing, fundamentally stop the Unstable internal fixation that DHS causes because of excessive slip.
This utility model solves the technical scheme that its technical problem adopts:
A kind of instant pressurization hip screw steel plate lag screw, comprising: comprise lag screw body and lag screw threaded portion, described lag screw body is provided with teeth.
As preferably, the side that described lag screw body is provided with teeth is provided with the arcuate groove be convenient to forcing screw threaded portion and be meshed with teeth.The setting of this arcuate groove, the depth of engagement of forcing screw and lag screw can be made to increase on the one hand, thus increase joggled strength, ensure that the stability of pressurization, on the other hand, after having offered arcuate groove, teeth on lag screw are no longer the teeth being only confined to protrude from lag screw body surface, but can be become to be integrated with lag screw body and be arranged on the teeth in arcuate groove, pressure effect is more firm, and preparation technology is simpler.
The beneficial effects of the utility model are: the one that this utility model provides instant pressurization hip screw steel plate lag screw, being provided with several by lag screw body can with the threaded engagement teeth on forcing screw, make to engage the screw thread no longer relying on lag screw self between lag screw with forcing screw, fracture can be produced linearly pressurize significantly, and this pressurization is direct continuous and effective and controllable pressurization, be conducive to the healing of fracturing, fundamentally stop the Unstable internal fixation that DHS causes because of excessive slip, the side that lag screw body is provided with teeth is provided with the arcuate groove be convenient to described forcing screw threaded portion and be meshed with teeth, the setting of this arcuate groove, the depth of engagement of forcing screw and lag screw can be made to increase on the one hand, thus increase joggled strength, ensure that the stability of pressurization, on the other hand, after having offered arcuate groove, teeth on lag screw are no longer the teeth being only confined to protrude from lag screw body surface, but can be become to be integrated with lag screw body, and the teeth be arranged in arcuate groove, pressure effect is more firm, preparation technology is simpler.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is the axonometric chart of instant pressurization hip screw steel plate lag screw of the present utility model;
Fig. 2 is a kind of axonometric chart of instant pressurization hip screw system;
Fig. 3 is the axonometric chart that lag screw of the present utility model and forcing screw are meshed;
Fig. 4 is the axonometric chart of instant pressurization hip screw steel plate of the present utility model;
Fig. 5 is the axonometric chart of forcing screw of the present utility model;
Fig. 6 is the axonometric chart of lock screw of the present utility model.
In figure: 1. side Lucking compression plate, 11. fixing holes, 2. side plate sleeve, through hole on 21., 22. lower through-holes, 3. lag screw, 31. lag screw bodies, 32. lag screw threaded portions, 33. teeth, 34. arcuate grooves, 4. forcing screw, 41. forcing screw heads, 42. forcing screw threaded portion, 5. screw, 6. lock screw, 61. heads of a nail, 62. nail body, 7. contact surfaces.
Detailed description of the invention
By reference to the accompanying drawings this utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with this utility model.
As shown in Figure 1, a kind of instant pressurization hip screw steel plate lag screw, comprising: lag screw body 31 and lag screw threaded portion 32, lag screw body 31 is provided with teeth 33.
In a kind of detailed description of the invention, the side that lag screw body 31 is provided with teeth 33 is provided with the arcuate groove 34 be convenient to forcing screw threaded portion and be meshed with teeth 33.Can make to engage between forcing screw threaded portion 42 with teeth 33 more abundant, be conducive to the stability of pressurizeing, wherein the radian of arcuate groove 34 external diameter that is best and forcing screw threaded portion 42 matches, and the radian also can being arranged to arcuate groove 34 is greater than the external diameter of forcing screw threaded portion 42.
As shown in Figures 1 to 6, a kind of instant pressurization hip screw system, comprising:
Side Lucking compression plate 1, side Lucking compression plate 1 is provided with several for side Lucking compression plate 1 being fixed on the fixing hole 11 on the backbone of near end of thighbone,
Side plate sleeve 2, side plate sleeve 2 axis direction is provided with through hole 21 and lower through-hole 22, and upper through hole 21 is connected with lower through-hole 22, forms figure of eight through hole,
Lag screw 3, lag screw 3 comprises lag screw body 31 and lag screw threaded portion 32, and lag screw body 31 is provided with teeth 33, and
Forcing screw 4, forcing screw 4 comprises forcing screw head 41 and forcing screw threaded portion 42,
Side Lucking compression plate 1 is fixedly connected with side plate sleeve 2, angle between the backbone of the angle between side Lucking compression plate 1 and side plate sleeve 2 and near end of thighbone and neck of femur is matched, lag screw 3 is located in through hole 21, forcing screw 4 is located in lower through-hole 22, forcing screw threaded portion 42 is meshed with the teeth 33 of lag screw body 31, and the connecting portion of side Lucking compression plate 1 and side plate sleeve 2 is provided with the fixture for fixing forcing screw 4.
Fixture can be: comprise the screw 5 being arranged on side Lucking compression plate 1 and side plate sleeve 2 junction, and the lock screw 6 be detachably arranged in screw 5, lock screw 6 comprises the head of a nail 61 and nail body 62, when nail body 62 is arranged in screw 5, the head of a nail 61 contacts with the lower limb of forcing screw 4, and is fixed in lower through-hole 22 by forcing screw 4.Also can be other fixture, as long as the object be fixed on by the forcing screw 4 adjusting position in lower through-hole 22 can be reached.
In a kind of detailed description of the invention, in order to ensure that side Lucking compression plate 1 fully contacts with the backbone of near end of thighbone, improve its fixed effect, side Lucking compression plate 1 is cambered surface with the contact surface 7 of the backbone of near end of thighbone, and the geometry of space form of contact surface 7 and the key configuration of surface of near end of thighbone match.
In a kind of detailed description of the invention, side Lucking compression plate 1 is cambered surface with the contact surface 7 of the backbone of near end of thighbone, and the radius of curvature of contact surface 7 is less than the radius of curvature of the backbone of near end of thighbone.The two edges contact skeleton of steel plate, defines doublet contact, thus decreases contact area, prevents the destruction that steel plate is transported the compressing of periosteum and local blood.
As preferably, the edge that side Lucking compression plate 1 contacts with the backbone of near end of thighbone is rounded down, and reduces the incisura that side Lucking compression plate is formed periosteum
In a kind of detailed description of the invention, the angle between side Lucking compression plate 1 and side plate sleeve 2 is 125 °-130 °.Preferably 127 °, avoid when the sclerotin of femoral head neck the first half is relatively loose, when lag screw is positioned at this region, easily occur the complication such as screw cutting.
In a kind of detailed description of the invention, side Lucking compression plate 1 and side plate sleeve 2 one-body molded.
In a kind of detailed description of the invention, the adjustable angle between side Lucking compression plate 1 and side plate sleeve 2.Can carry out adjusting the angle between side Lucking compression plate 1 and side plate sleeve 2 according to the femur difference of different patient, expand its suitability.This adjustable structure can be structure disclosed in Chinese patent CN2852972Y, also can be other structures.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content in description, must determine its technical scope according to right.
Claims (1)
1. an instant pressurization hip screw steel plate lag screw, it is characterized in that comprising: lag screw body (31) and lag screw threaded portion (32), described lag screw body (31) is provided with teeth (33), and the side that described lag screw body (31) is provided with teeth (33) is provided with the arcuate groove (34) be convenient to forcing screw threaded portion and be meshed with teeth (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386611.4U CN205031357U (en) | 2015-06-04 | 2015-06-04 | Immediately, hip screw pulling force screw for steel sheet pressurizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386611.4U CN205031357U (en) | 2015-06-04 | 2015-06-04 | Immediately, hip screw pulling force screw for steel sheet pressurizes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205031357U true CN205031357U (en) | 2016-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520386611.4U Active CN205031357U (en) | 2015-06-04 | 2015-06-04 | Immediately, hip screw pulling force screw for steel sheet pressurizes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205031357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115141A (en) * | 2017-07-14 | 2017-09-01 | 成都贝施美医疗设备有限公司 | A kind of telescopic near end of thighbone attachment means |
-
2015
- 2015-06-04 CN CN201520386611.4U patent/CN205031357U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115141A (en) * | 2017-07-14 | 2017-09-01 | 成都贝施美医疗设备有限公司 | A kind of telescopic near end of thighbone attachment means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213164 West Lake Road, Wujin high tech Zone, Changzhou, Jiangsu, 9 Patentee after: Changzhou Huasen Medical Instrument Co.,Ltd. Address before: 213164 West Lake Road, Wujin high tech Zone, Changzhou, Jiangsu, 9 Patentee before: CHANGZHOU WASTON MEDICAL APPLIANCE Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 213000 No.5 Longxiang Road, Nanxiashu street, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: Changzhou Huasen Medical Instrument Co.,Ltd. Address before: 213164 West Lake Road, Wujin high tech Zone, Changzhou, Jiangsu, 9 Patentee before: Changzhou Huasen Medical Instrument Co.,Ltd. |