CN101249016A - Fracture of acetabulum reset internal fixation machine - Google Patents
Fracture of acetabulum reset internal fixation machine Download PDFInfo
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- CN101249016A CN101249016A CNA2008100246326A CN200810024632A CN101249016A CN 101249016 A CN101249016 A CN 101249016A CN A2008100246326 A CNA2008100246326 A CN A2008100246326A CN 200810024632 A CN200810024632 A CN 200810024632A CN 101249016 A CN101249016 A CN 101249016A
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- steel plate
- fracture
- section steel
- acetabulum
- ilium
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Abstract
The invention relates to an internal fixer for reduction of acetabular fracture, comprising an ilium segment steel plate and an internal wall segment steel plate, wherein the two segments are movably connected with a fixing pin, and a pawl and a ratchet are arranged at the joint region. The inventive internal fixer can perform accurate reduction of acetabular inner wall fracture under the action of pawl type ratchet, and at the same time, achieves ideal fixation effect. The inventive internal fixer has the advantages of simple structure, simple operation, shorted operation time, and reduced operation risk.
Description
Technical field
The invention belongs to the reduction of the fracture and internal fixation treatment category, be particularly related to resetting and inner fixing device that walls displace is fractured in a kind of acetabular bone, be mainly used in walls displace fracture in the clinical common acetabular bone of Orthopeadic Surgery, the promptly so-called surgical operation therapy that merges " fracture of acetabulum of femoral head central dislocation ".
Background technology
Acetabular bone inwall system is positioned at the thin cut bone sex organization structure of acetabular bone inboard, and it is forward and backward to link to each other with the forward and backward post of acetabular bone respectively, and wherein with the zone that links to each other of rear pillar, " squared region (quadrilateral area) " usually is otherwise known as.Therefore, when fracture of acetabulum such as twin columns fracture, intercondylar fracture, transverse fracture involve the front pillar of acetabular bone and rear pillar, often can fracture to Intrapelvic displacement with inwall simultaneously, this often shows as femoral head and follows the inwall sclerite to move to the dish intracavity on X-ray film, the X line that forms so-called " central dislocation " is levied.Because most acetabular bone inwalls are after fracture, often link to each other with the front pillar or the os metastyloideum folded block of acetabular bone, therefore, the fracture of this part that resets often can obtain by resetting of front pillar or rear pillar fracture, and the fracture of fixing this part equally also can obtain by front pillar or rear pillar fixation of fractures.Yet, in real work, still have quite a few patient's inwall to fracture, behind front pillar and the ideal internal fixation that resets of rear pillar fracture acquisition, still there is displacement in various degree.One of reason is to fail effectively to correct the rotation displacement that the rear pillar fracture exists.Former two is because gerontal patient's osteoporosis causes acetabular bone inwall district fracture to be pulverized therefore, make the acetabular bone inwall that linked to each other with acetabular anterior column or rear pillar maintenance originally, front pillar or rear pillar with acetabular bone after syntripsis are separated, and tradition can't be proved effective by acetabular anterior column or the rear pillar fixed method that resets.Former three is some osteoporosis person also therefore, the acetabular bone inwall causes mechanical strength to weaken because of too poor, though therefore the acetabular bone inwall keeps linking to each other with the rear pillar of acetabular bone, but satisfied rear pillar resets and fixes, the satisfaction that still can't guarantee the inwall sclerite resets and fixes, this be owing to poor acetabular bone inwall can not bear capital answer back to move in taking place due to.In order to address the above problem, following several method is arranged in the industry:
1, adopt two pieces of screws to enter from the pubic crest of inwall front upper place, edge " squared region " interior sidetracking is post backward, to strengthen the fixing of this zone, prevents the displacement of inwall fracture.This method shortcoming is that screw easily pierces the joint, and constant intensity is not ideal enough.
2, the acetabular bone inwall fracture that adopts the memorial alloy steel plate to be used to reset and to move in fixing utilizes the temperature retraction of memorial alloy can produce certain reduction of the fracture and fixation.The shortcoming of this method is that operation is loaded down with trivial details, and the constant intensity that resets is not ideal enough and operating time is long.
3, adopt a kind of steel plate that can pre-bending, before pre-bending, be shape steel plate always as shown in Figure 1, this steel plate is that medical 316L stainless steel material is made, can be in the operation according to the reduction of the fracture and fixed needs, adopt " lever " with this always the shape steel plate carry out pre-bending, approximate as shown in Figure 2 " L " shape of the steel plate after the pre-bending.Slotted eye on the steel plate is to specialize in the fixing use of screw as shown in Figure 1.Because the acetabular bone outer surface is the shape that is uneven, smooth unlike the surface that long bone of limbs is done, therefore, the normal need of acetabular bone steel plate done necessary side direction pre-bending according to the geometry of acetabular bone appearance, and the lateral symmetry of Fig. 1 steel plate is arranged semicircle breach design exactly for the ease of in the operation steel plate being done side direction pre-bending.The shortcoming of this method is that the pre-bending angle of " L " shape steel plate often needs repeatedly to adjust according to the needs of the reduction of the fracture in the art, has increased operating time and amount of bleeding.For the part patient, even repeatedly pre-bending still is difficult to obtain ideal pre-bending angle, both influenced reduction of the fracture quality thus, also expended more operating time, increased amount of bleeding, increased operation risk, all these all can directly influence operative effect.
Summary of the invention
The objective of the invention is provides a kind of simple to operate in order to overcome the weak point of said method, can easily adjust the fracture of acetabulum reset internal fixation machine of fixed angle, shortening operating time.
For achieving the above object, the present invention has done further improvement to " L " shaped steel plate described in the background technology.
Technical scheme of the present invention is: a kind of fracture of acetabulum reset internal fixation machine, comprise ilium section steel plate and inner wall section steel plate, steady pin flexibly connects ilium section steel plate and inner wall section steel plate, wherein near section of the inner wall section steel plate is designed for ratchet, the far-end of ilium section steel plate is provided with detent design, and ratchet matches with ratchet and forms pawl type ratchet structure.
The plate face of wherein said ilium section steel plate is provided with circular hole or slotted eye, and the both sides of described ilium section steel plate are provided with semicircle breach, evenly is provided with aperture on the plate face of described inner wall section steel plate.
Described ilium section steel plate is a strip steel plate, and slotted eye uses for screw is fixing on the steel plate, and the pre-bending of steel plate side direction is convenient in the semicircle breach design of steel plate both sides.
Described inner wall section steel plate is the tabular steel plate, aperture design on the steel plate helps resetting of " asymmetric reduction forceps ", because the tip of asymmetric reduction forceps is designed for sharp tooth, the design of aperture on the steel plate can prevent that asymmetric reduction forceps tip from sliding on smooth steel plate.
Design principle of the present invention is in view of the common unidirectional displacement (being the femoral head central dislocation) based on top in the pelvic cavity of acetabular bone inwall fracture, so adopt the reduction fixture device of the inwall fracture being pressed to single outer direction down (promptly the direction of displacement with fracture is opposite), under traction and the cooperation of asymmetric reduction forceps, reset, can obtain ideal resetting with fixing.The pawl type ratchet structure of the present invention's design, the glide direction that is produced meets and the opposite principle of acetabular bone inwall displacement fracture direction fully, so can satisfy resetting and fixedly requirement of acetabular bone inwall fracture.At first acetabular bone inner wall section steel plate is placed the inboard of displacement acetabular bone inwall during clinical use, ilium section steel plate is screwed in ilium, under asymmetric reduction forceps of acetabular bone and traction cooperation, reset then, acetabular bone inner wall section steel plate will be pressed to outer direction down with inwall fracture and femoral head along with resetting, till the satisfaction that resets.Because the present invention adopts pawl type ratchet structure, so when obtaining satisfied resetting, just obtained the fixing of satisfaction.
Beneficial effect
The present invention is simple in structure, can make acetabular bone inwall fracture obtain ideal reset and fixing very easily, shortened operating time, reduced blood loss volume during the operation, significantly improved resetting and fixed mass of fracture, and then improved clinical efficacy, avoided because the reduction of the fracture of acetabular bone inwall and the fixing undesirable lifelong disabled risk that causes.
Description of drawings
Fig. 1 is " L " shaped steel plate pre-bending pre-structure figure
Fig. 2 is a sketch map after the pre-bending of " L " shaped steel plate
Fig. 3 is an embodiment of the invention structure chart
Fig. 4 is an embodiment of the invention side view
Wherein: 1 ilium section steel plate; 2 inner wall section steel plates; 3 steady pins; 4 slotted eyes; 5 semicircle breach; 6 apertures; 7 ratchets; 8 single file gears; 9 linking arms; 10 concave indentation.
The specific embodiment
For further understanding content of the present invention and highlighting advantage of the present invention, now be elaborated as follows with the specific embodiment:
A kind of fracture of acetabulum reset internal fixation machine as shown in Figure 3, Figure 4, its main body uses medical 316L stainless steel material to make, the ilium section steel plate 1 that comprises strip, flat inner wall section steel plate 2, ilium section steel plate far-end is provided with concave indentation 10, inner wall section steel plate proximal extension has linking arm 9, and the concave indentation 10 of ilium section steel plate cooperates the linking arm 9 of inner wall section steel plate to adopt steady pin 3 to flexibly connect.Near section of the inner wall section steel plate is provided with ratchet 8 as shown in Figure 4, and the ilium section is provided with ratchet 7, and ratchet 7 matches with ratchet 8 and forms pawl type ratchet structure.
Ilium section steel plate is provided with slotted eye 4 as shown in Figure 3, and the steel plate both sides are provided with symmetric semicircle breach 5, evenly is provided with aperture 6 on the inner wall section steel plate.
The present invention is simple in structure, and is easy and simple to handle, can accurately reset to acetabular bone inwall fracture under the effect of pawl type ratchet structure, just can reach ideal fixed effect when resetting, and shortened operating time, reduced operation risk.
Claims (5)
1, a kind of fracture of acetabulum reset internal fixation machine, comprise ilium section steel plate and inner wall section steel plate, it is characterized in that ilium section steel plate and inner wall section steel plate adopt steady pin to flexibly connect, be provided with pawl type ratchet structure at ilium section steel plate and inner wall section steel plate flexible connection zone.
2, fracture of acetabulum reset internal fixation machine according to claim 1 is characterized in that near section of inner wall section steel plate is provided with ratchet, and far away section of ilium section steel plate is provided with ratchet, and ratchet matches with ratchet and forms pawl type ratchet structure.
3, fracture of acetabulum reset internal fixation machine according to claim 1 and 2 is characterized in that the plate face of ilium section steel plate is provided with slotted eye, and ilium section steel plate both sides are provided with semicircle breach.
4, fracture of acetabulum reset internal fixation machine according to claim 1 and 2 is characterized in that the plate face of inner wall section steel plate is provided with evenly distributed aperture.
5, fracture of acetabulum reset internal fixation machine according to claim 3 is characterized in that the plate face of inner wall section steel plate is provided with evenly distributed aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100246326A CN101249016A (en) | 2008-03-28 | 2008-03-28 | Fracture of acetabulum reset internal fixation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100246326A CN101249016A (en) | 2008-03-28 | 2008-03-28 | Fracture of acetabulum reset internal fixation machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101249016A true CN101249016A (en) | 2008-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100246326A Pending CN101249016A (en) | 2008-03-28 | 2008-03-28 | Fracture of acetabulum reset internal fixation machine |
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| CN (1) | CN101249016A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102090918A (en) * | 2011-02-24 | 2011-06-15 | 王林华 | Flexional and extensible support for hip joint |
| CN102551867A (en) * | 2012-01-09 | 2012-07-11 | 上海市第一人民医院 | Pelvis arcuate line lower edge anatomic bone fracture plate |
| CN113768596A (en) * | 2021-07-23 | 2021-12-10 | 中国人民解放军总医院第四医学中心 | Acetabulum fracture quadrangular body fixing device and using method |
-
2008
- 2008-03-28 CN CNA2008100246326A patent/CN101249016A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102090918A (en) * | 2011-02-24 | 2011-06-15 | 王林华 | Flexional and extensible support for hip joint |
| CN102551867A (en) * | 2012-01-09 | 2012-07-11 | 上海市第一人民医院 | Pelvis arcuate line lower edge anatomic bone fracture plate |
| CN102551867B (en) * | 2012-01-09 | 2014-12-10 | 上海市第一人民医院 | Pelvis arcuate line lower edge anatomic bone fracture plate |
| CN113768596A (en) * | 2021-07-23 | 2021-12-10 | 中国人民解放军总医院第四医学中心 | Acetabulum fracture quadrangular body fixing device and using method |
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Open date: 20080827 |