CN103054640A - Combined internal fixation device for reduction of acetabular fractures - Google Patents
Combined internal fixation device for reduction of acetabular fractures Download PDFInfo
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- CN103054640A CN103054640A CN2013100325723A CN201310032572A CN103054640A CN 103054640 A CN103054640 A CN 103054640A CN 2013100325723 A CN2013100325723 A CN 2013100325723A CN 201310032572 A CN201310032572 A CN 201310032572A CN 103054640 A CN103054640 A CN 103054640A
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Abstract
The invention discloses a combined internal fixation device for reduction of acetabular fractures. The device comprises a pelvis reduction steel plate and a quadrilateral-area steel plate. The pelvis reduction steel plate and the quadrilateral-area steel plate are fixedly connected through screws. The middle widened section of the pelvis reduction steel plate can fix comminuted fractures of anterior columns of acetabulums in a supporting mode, while the upper part of the quadrilateral-area steel plate is designed with a 70-degree outward angle so as to fix quadrilateral-area fractures neighboring to load-bearing areas in a supporting mode. The combined internal fixation device is simple in structure and convenient to operate, can effectively fix comminuted fractures in combined quadrilateral areas of the anterior columns of the acetabulums all at once. Operation time is shortened, and operation risk is reduced.
Description
Technical field
The invention belongs to reduction of the fracture fixation for treatment category, be particularly related to the inner fixing device that resets that a kind of acetabular anterior column merges walls displace fracture in the acetabular bone, be mainly used in the clinical common old acetabular anterior column of Orthopeadic Surgery and merge interior walls displace fracture, be i.e. the surgical operation therapy of so-called merging the " fracture of acetabulum of interior lateral dislocation before the femoral head ".
Background technology
Acetabular anterior column claims again ilium shame post, starts from pubic branch, through the place ahead mortar facing up, front anterior superior iliac spine or the crista iliaca of extending to.The bone projection of front pillar is iliopectineal crest of iliac bone, and this ridge is positioned at capital front side just.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.Because gerontal patient (＞65 years old) is at the osteoporosis especially severe of acetabular anterior column and squared region, mechanical structure is weak especially, even slight low-yield wound sometimes, as because of carelessness at home the level land slide into, this regional severe comminuted fracture can occur and merge femoral head dislocation.If this class fracture fails to obtain correctly to process timely, not only easily causes deformity, but threat to life still.In recent years, the paces that enter aging society along with China accelerate, and the old fracture of acetabulum sickness rate of similar this feature is year by year ascendant trend.Therefore how correct this class of processing is fractured, and makes them obtain as early as possible rehabilitation, is the clinical important topic that faces of current Orthopeadic Surgery and a difficult problem.
Compare with the youngster fracture of acetabulum, often there is following difficult point in the old fracture of acetabulum in this zone aspect the internal fixation operation treatment that resets:
1, rear pillar is most complete without fracture, causes the squared region fracture that links to each other with rear pillar, can't obtain to reset and fix by rear pillar, therefore, must carry out individual reset, fixing to it.
2, the squared region sclerotin is poor, pulverizing is serious, and is positioned at the inboard narrow and small true pelvis of acetabular bone, can't adopt traditional reconstruction plate to be fixed.
3, when acetabular bone squared region fracture merges the front pillar fracture, traditional pelvic reconstructive steel plate only can be used for fixedly front pillar fracture as shown in Figure 1, can not take into account resetting with fixing of squared region syntripsis.
4, the inventor discloses a kind of fracture of acetabulum reset internal fixation machine as shown in Figure 2 in application in 2008, and its patent application publication number is CN101249016.This technology can active homing fixing squared region fracture, but can not take into account simultaneously the acetabular anterior column fracture reset and fixing, therefore, can only be used for the resetting and fix of squared region fracture of some type.
5, because the particularity of Acetabular dissection can't be fracture of acetabulum reset internal fixation machine and the acetabulum reconstruction steel plate of CN101249016 with patent application publication number, unite for the common acetabular anterior column of gerontal patient and merge the squared region fracture.
In order to solve above-mentioned clinical problem, following several way is arranged in the industry:
1, through pelvic reconstructive steel plate or add in the long spiro nail fixing through the locking-type pelvic reconstructive steel plate: adopt as the adding long spiro nail or add long spiro nail through locking-type pelvic reconstructive steel plate steel plate through pelvic reconstructive steel plate and fix of appended list of references introduction.Fixing principle is when fixedly front pillar is fractured by reconstruction plate, to adopt several pieces and add long spiro nail, and the tap drill on reconstruction plate is to the squared region fracture segment, to take into account simultaneously the fixing of front pillar and squared region fracture.This method can solve the fixation problem that reconstruction plate is taken into account front pillar and squared region fracture in theory, but lacks practicality, and this is because first: screw is subjected to the restriction of screw, and piercing angle slightly has deviation, just probably pierces articular cavity, jeopardizes hip joint function; Second: gerontal patient's squared region sclerotin mostly loose, poor, fracture segment is the pulverizing state, and screw can't obtain effectively fixing.
2, titanium locking-type inner fixer: the fixation principle of this inner fixer, as appended list of references introduction, namely by the porous design of locking device on the inner fixer, be covered in acetabular anterior column and squared region by pre-bending, to take into account the fixing of front pillar and squared region fracture.Its shortcoming is first: in order to satisfy the requirement of pre-bending in the art, the material thickness of holder must be belittled, and thus, easily weakens constant intensity, causes fracture redisplacement; Second: the front pillar comminuted fracture of some wide range, this inner fixer can't obtain desirable all standing and fix.
Summary of the invention
The objective of the invention is provides a kind of simple to operate, remarkably productive in order to overcome the weak point of said method, can take into account simultaneously resetting with fixing of acetabular anterior column and squared region fracture, shortens operating time, is exclusively used in resetting of old fracture of acetabulum interior fixing.
For achieving the above object, the present invention has done further improvement to the pelvic reconstructive steel plate described in the background technology and fracture of acetabulum reset internal fixation machine.
Technical scheme of the present invention is: a kind of combination type fracture of acetabulum reduction fixture device, comprise that pelvic reconstructive steel plate is connected the connecting device that connects these two kinds of steel plates with the squared region steel plate, this pelvic reconstructive steel plate is the fracture of front pillar fixedly, and this squared region steel plate strip angle and porous be the fracture of squared region fixedly;
Described pelvic reconstructive steel plate camber structure, comprise the three sections steel plates in left, center, right, be equipped with on its left section plate face with right section steel plate and can for the fixing ellipse screw of screw and acetabular anterior column, without screw thread, specialize in fixing of screw and acetabular anterior column in this ellipse screw; This interlude steel plate comprises the broadening zone of stretching out along the arc outer and the concave region that is connected with the section of right side steel plate with left section steel plate, and described concave region is provided with at least five screws that contain screw thread design; The squared region steel plate comprises epimere and hypomere steel plate, wherein the epimere steel plate is horizontal, which is provided with at least five threadless screws, this screw can be connected and fixed by three screws on bolt and broadening district, the described pelvic reconstructive steel plate stage casing concave side at least, the hypomere steel plate is longitudinal design, its main body is tabular, evenly is provided with many row's apertures on it.
As optimal technical scheme: be equipped with 9 ellipse screws that can fix for screw and acetabular anterior column on the described left section plate face with right section steel plate.
As optimal technical scheme: described concave region is provided with 5 circular screwholes, threaded design in the hole, be used for and being connected and fixed of squared region steel plate, described broadening zone is provided with 2 ellipse screws, without screw thread design, is specifically designed to additional screw and fixes in the hole, be conducive to strengthen the constant intensity of squared region steel plate square shaped district syntripsis, in addition, this broadening zone also helps the supportive of some front pillar syntripsis is fixed so that the width of interlude steel plate increases.
As optimal technical scheme: the horizontal design that the epimere steel plate of squared region steel plate is rectangle, the above is with 5 screws, in the hole without screw thread, mainly bear and being connected and fixed of pelvic reconstructive steel plate, the hypomere steel plate is the tabular steel plate of longitudinal design, the top of this steel plate is designed to 70 outside degree angulations, and the resetting of squared region fracture that is conducive to strengthen being positioned at the contiguous district of bearing a heavy burden fixed with supportive.The tabular steel plate is conducive to cooperate the active homing of asymmetric reduction forceps in the art with the design of many row's apertures.Because the end of asymmetric reduction forceps designs for sharp tooth, these many row's apertures designs are conducive to prevent that skidding from appearring in asymmetric reduction forceps in reseting procedure.
The principle of the present invention's design is based on old fracture of acetabulum and often presents the feature that front pillar merges the squared region fracture, show as the front pillar fracture segment to the front medial displacement of acetabular bone, and the squared region fracture segment is to the pelvic cavity medial displacement, i.e. so-called centrality displacement, and with capital front interior lateral dislocation.The present invention gives broadening with the interlude of part pelvic reconstructive steel plate, and the supportive that both has been conducive to bring into play the front pillar comminuted fracture is fixed, and is conducive to again union piece squared region steel plate, and the latter can take into account the fixing of squared region fracture, prevents that femoral head from dislocating again.Because resetting of squared region fracture fixedly is to be close to acetabular bone to bear a heavy burden the district as emphasis, therefore the design also is designed to the epimere of part squared region steel plate 70 degree angulations laterally, real work is empirical tests, and this will be conducive to bring into play part " squared region steel plate " the resetting of squared region fracture in the contiguous district of bearing a heavy burden fixed with supportive.
The invention has the beneficial effects as follows: because old fracture of acetabulum patient is relatively poor to operation tolerance fixing in the open reduction, therefore, to the requirement of operation except must guarantee fracture of acetabulum can obtain desirable reset with fix, still need and guarantee that operating time is short, go out insufficiency of blood, operation wound is little.Although structure of the present invention is simple, can satisfies very easily resetting with fixing of old fracture of acetabulum, and then improve curative effect.This invention can be avoided can also significantly shortening operating time because of the reduction of the fracture, the fixing undesirable lifelong deformity that causes, and avoids the operation risk that brings because of prolonged operations, reduces mortality rate.Therefore, very practical.
Description of drawings
Fig. 1 is traditional pelvic reconstructive steel plate structure chart;
The structure chart of Fig. 2 fracture of acetabulum reset internal fixation machine;
Fig. 3 embodiment of the invention structural representation;
The structural representation of Fig. 4 embodiment of the invention part one pelvic reconstructive steel plate;
The front view of Fig. 5 embodiment of the invention constitutional detail one squared region steel plate.
Fig. 6 is the side view of Fig. 5;
Fig. 7 is the top view of Fig. 5;
Wherein: 1, arc pelvic reconstructive steel plate, 2, squared region steel plate, 3, the middle broadening section of pelvic reconstructive steel plate, 4, the double screw design of broadening section in the middle of the pelvic reconstructive steel plate, 5, the epimere rectangle of squared region steel plate design, 6, connect the hold-down screw of squared region steel plate and pelvic reconstructive steel plate, 7, hypomere squared region steel plate spends angles with 70 of epimere squared region steel plate, 8, the semicircle breach of the symmetry of pelvic reconstructive steel plate both sides, 9, the uniform small pores that is provided with of hypomere squared region steel plate.
The specific embodiment
For further understanding content of the present invention and showing advantage of the present invention especially, now be elaborated as follows with the specific embodiment:
A kind of old fracture of acetabulum reset internal fixation machine shown in Fig. 3 is extremely shown in Figure 7, its main body uses the medical 316L stainless steel material to make, comprise arc pelvic reconstructive steel plate 1, squared region steel plate 2, the middle broadening section 3 of pelvic reconstructive steel plate, the double screw design 4 of broadening section in the middle of the pelvic reconstructive steel plate, concave region is that connecting hole, broadening zone are for strengthening fixing hole, the rectangle design 5 of squared region steel plate epimere is connected by screw 6 with the screw 4 of the concave region of arc pelvic reconstructive steel plate interlude, and upper and lower section of the squared region steel plate is 70 degree angles and connects 7.
Shown in Fig. 5,6,7, the hypomere steel plate of described acetabular bone squared region steel plate comprises oblique section zone and vertical section zone, wherein tiltedly is 70 degree angles between the epimere steel plate of section and acetabular bone squared region steel plate, and the vertical section zone is tabular, evenly is provided with many row's apertures on it.
Shown in Fig. 3,4, upper and lower section of the part pelvic reconstructive steel plate is equipped with ellipse screw, and the both sides of steel plate are provided with symmetrical semicircle breach 8, and the hypomere of squared region steel plate is provided with uniform small pores 9.
Left section of described pelvic reconstructive steel plate is respectively the distance of 9 screws with right segment length, width is 9mm, the length and width of the ellipse screw on it is respectively 8mm and 4mm, distance between borehole is 6mm, the concave surface degree of depth of described concave side is 2cm, the length and width in broadening district, stage casing is respectively 30mm and 22mm, recessed side in this broadening district is provided with 5 with the screw of female thread, each screwhole diameter is 4mm, and being provided with 2 ellipses without the screw of female thread in protruding side, the length and width of screw is respectively 8mm and 4mm.
The length and width of described squared region steel plate is respectively 50mm and 30mm, and wherein the length and width of the horizontal design of epimere rectangle is respectively 30mm and 21mm, and the outer ledge of this horizontal design is provided with 5 without the screw of female thread, and the diameter of each screw is 4.2mm.
The concave region in described pelvic reconstructive steel plate stage casing is provided with five screws, and the epimere of described squared region steel plate is provided with five screws, is bolted to connect pelvic reconstructive steel plate and squared region steel plate.
The present invention is simple in structure, and is easy and simple to handle, and after adopting asymmetric reduction forceps to assist to reset, can disposable performance fixing to uniting of acetabular anterior column and squared region fracture, this will be conducive to shorten operating time, reduce operation risk.
Claims (6)
1. combination type fracture of acetabulum reset internal fixation machine, comprise pelvic reconstructive steel plate, squared region steel plate and the connecting device that connects these two kinds of steel plates, it is characterized in that described pelvic reconstructive steel plate camber structure, comprise a left side, in, right three sections steel plates, be equipped with the ellipse screw that to fix for screw and acetabular anterior column on its left section plate face with right section steel plate, in this screw hole without screw thread, this interlude steel plate comprises the broadening zone of stretching out along the arc outer and the concave region that is connected with the section of right side steel plate with left section steel plate, and described concave region is provided with at least five screws that contain screw thread design; Acetabular bone squared region steel plate comprises epimere and hypomere steel plate, wherein the epimere steel plate is horizontal, which is provided with at least five threadless screws, this screw can be connected and fixed by three screws on bolt and broadening district, the described pelvic reconstructive steel plate stage casing concave side at least, the hypomere steel plate is for vertically relating to, its main body is tabular, evenly is provided with many row's apertures on it.
2. combination type fracture of acetabulum reset internal fixation machine according to claim 1, the hypomere steel plate that it is characterized in that described acetabular bone squared region steel plate comprises oblique section zone and vertical section zone, wherein tiltedly be 70 degree angles between the epimere steel plate of section and acetabular bone squared region steel plate, the vertical section zone is tabular, evenly is provided with many row's apertures on it.
3. combination type fracture of acetabulum reset internal fixation machine according to claim 1 is characterized in that broadening zone, described pelvic reconstructive steel plate stage casing is provided with 2 ellipse screws.
4. according to claim 1 and 2 or 3 described combination type fracture of acetabulum reset internal fixation machine, it is characterized in that left section of described pelvic reconstructive steel plate is respectively the distance of 9 screws with right segment length, width is 9mm, the length of the ellipse screw on it, wide is respectively 8mm and 4mm, distance between borehole is 6mm, the concave surface degree of depth of described concave side is 2cm, the length in broadening district, stage casing, wide 30mm and the 22mm of being respectively, recessed side in this broadening district is provided with 5 with the screw of female thread, each screwhole diameter is 4mm, and be provided with 2 ellipses without the screw of female thread in protruding side, the length of screw, wide is respectively 8mm and 4mm.
5. according to claim 1 and 2 or 3 described combination type fracture of acetabulum reset internal fixation machine, the length and width that it is characterized in that described squared region steel plate is respectively 50mm and 30mm, wherein the length and width of the horizontal design of epimere rectangle is respectively 30mm and 21mm, the outer ledge of this horizontal design is provided with 5 without the screw of female thread, and the diameter of each screw is 4.2mm.
6. combination type fracture of acetabulum reset internal fixation machine according to claim 4 is characterized in that the concave region in described pelvic reconstructive steel plate stage casing is provided with five screws, and the epimere of described squared region steel plate is provided with five screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100325723A CN103054640A (en) | 2013-01-29 | 2013-01-29 | Combined internal fixation device for reduction of acetabular fractures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100325723A CN103054640A (en) | 2013-01-29 | 2013-01-29 | Combined internal fixation device for reduction of acetabular fractures |
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| CN103054640A true CN103054640A (en) | 2013-04-24 |
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| CN2013100325723A Pending CN103054640A (en) | 2013-01-29 | 2013-01-29 | Combined internal fixation device for reduction of acetabular fractures |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451062Y (en) * | 2000-11-10 | 2001-10-03 | 刘云鹏 | Biological acetabulum three-dimensional rebuilding steel plate |
| US20050165401A1 (en) * | 2004-01-26 | 2005-07-28 | Larry Pack | Pelvic fixation plate |
| CN201223440Y (en) * | 2008-07-17 | 2009-04-22 | 傅宏 | Three-dimensional dissection type anterior steel plate for acetabulum |
| CN101427949A (en) * | 2007-11-06 | 2009-05-13 | 阎德强 | Acetabulum device |
| CN201370626Y (en) * | 2009-03-30 | 2009-12-30 | 周恩昌 | Bone plate for acetabular posterior wall fracture |
| CN201831946U (en) * | 2010-11-02 | 2011-05-18 | 毕大卫 | Pelvic acetabular quadrilateral surface anatomical steel plate |
| CN203138661U (en) * | 2013-01-29 | 2013-08-21 | 孙俊英 | Combined type acetabular fracture reduction internal fixator |
-
2013
- 2013-01-29 CN CN2013100325723A patent/CN103054640A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451062Y (en) * | 2000-11-10 | 2001-10-03 | 刘云鹏 | Biological acetabulum three-dimensional rebuilding steel plate |
| US20050165401A1 (en) * | 2004-01-26 | 2005-07-28 | Larry Pack | Pelvic fixation plate |
| CN101427949A (en) * | 2007-11-06 | 2009-05-13 | 阎德强 | Acetabulum device |
| CN201223440Y (en) * | 2008-07-17 | 2009-04-22 | 傅宏 | Three-dimensional dissection type anterior steel plate for acetabulum |
| CN201370626Y (en) * | 2009-03-30 | 2009-12-30 | 周恩昌 | Bone plate for acetabular posterior wall fracture |
| CN201831946U (en) * | 2010-11-02 | 2011-05-18 | 毕大卫 | Pelvic acetabular quadrilateral surface anatomical steel plate |
| CN203138661U (en) * | 2013-01-29 | 2013-08-21 | 孙俊英 | Combined type acetabular fracture reduction internal fixator |
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Application publication date: 20130424 |