CN1698547A - Dot contacting locked pressurized bone plate - Google Patents
Dot contacting locked pressurized bone plate Download PDFInfo
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- CN1698547A CN1698547A CNA2005100571140A CN200510057114A CN1698547A CN 1698547 A CN1698547 A CN 1698547A CN A2005100571140 A CNA2005100571140 A CN A2005100571140A CN 200510057114 A CN200510057114 A CN 200510057114A CN 1698547 A CN1698547 A CN 1698547A
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Abstract
The invention discloses a dot contacting locked pressurized bone plate, wherein a bar shape bone plate is provided with an elliptical pressurization hole axially and a drilled circular threaded hole, which are arranged at intervals, the threaded hole and the pressurization hole are provided with small bosses on the two sides on the same side of the bone plate, the cross-section of the bar shape bone plate is in arched form, the invention can not only perform kinetic pressurization by employing standard screws, but also realize stabilized angle fixation through the locking screws.
Description
Technical field
The present invention relates to a kind of internal fixation treatment equipment that is used for the human limb fracture, especially be applicable to osteoporosis and comminuted fracture patient's dot contacting locked pressurized bone plate.
Background technology
Blade plate is to treat the most frequently used internal fixation apparatus of fracture at present both at home and abroad.From late 1950s, by the international internal fixation AO/ASIF of EASD (following abbreviation AO) establishment is core internal fixation technology with the blade plate, and the Therapeutic Principle of anatomical reduction, strong fixing, noinvasive operation, early stage pain-free mobility, be the classical rule in the fractures field always.The development that its technology is gone through surplus in the of 40 year with popularize, now formed a integral framework from theory, principle, method to equipment, equipment, become one of classical means in the current fractures field.
Yet the development of anything all has positive and negative two aspects.Because traditional blade plate is a kind of simple pressurized bone plate, it is to have several oval pressurization holes (as Fig. 1, Fig. 2) on stripe board, when carrying out internal fixation, blade plate is close to skeleton, contact area is bigger, had a strong impact on the blood confession of skeleton under the plate, easily union of fracture has been produced adverse influence and brings out local osteoporosis and refracture.From eighties of last century beginning of the nineties, AO scholar Gerber, Palmar etc. have proposed to fix biology (the biological osteosynthesis BO) new ideas of (being called for short BO) in succession, emphasize that fractures will pay attention to the biological characteristics of bone, do not destroy the normal physiological environment of bone growth and development.Its core aim is the blood confession of protection bone, and with AO principle contradiction not, be to the AO principle improvement, replenish and perfect.
For the Therapeutic Principle of AO is organically merged with the new ideas of BO, reduce the contact area of bone and blade plate, people open recess (as Fig. 3, Fig. 4) in the bar shaped increased pressure board both sides that are provided with oval pressurization hole, and the blood of attempt protection bone supplies.Though this blade plate has reduced 50% contact area than conventional steel plates, blade plate is not eliminated fully with tight contact of bone, still has the destruction of osteogenesis.In addition, though this blade plate has kept the advantage of pressurizeing automatically between the broken ends of fractured bone, do not have the stable and biological internal fixation function in one-tenth angle of screw.In order to make blade plate have biological internal fixation function, at present, international internal fixation EASD has released " locked pressurized bone plate (locking compressionplate, LCP) " (being called for short LCP).It is that half is processed in the ellipse on bar shaped increased pressure board pressurization hole is unthreaded hole, and half is the form of screwed hole (as Figure 14).The advantage of this LCP blade plate is: 1. fracture anatomical reduction, strong fixing, postoperative functional exercise immediately is with the early recovery function, and needn't wait until after the union of fracture.2. distance plate sclerite far away is fixedly attached to purpose on the blade plate; Again can be as biological inner fixer, use lock screw to reach stable one-tenth angle and fix, help after the reduction of the fracture better fixing with keep, reach: 1. slide lock, reduced corresponding post-operative complication.2. few to blood for disturbing.The shortcoming of this locked pressurized bone plate is: 1. combined hole position intensity reduces, the fatiguability fracture; 2. the locking screw thread hole does not hold lock screw (holding less than 360 °) fully, has reduced the one-tenth angle and the axial stability of lock screw; 3. synthetism pull with plate under skeleton still for face contacts, when adding press fit, have destruction to skeleton blood confession under the plate; 4. the screw hole difficulty of processing is bigger, is difficult for production domesticization.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can collect conventional pressurized bone plate technology and be in the same place, can reduce under blade plate and the plate dot contacting locked pressurized bone plate of contact area between the skeleton again with biological inner fixer technology.
For achieving the above object, concrete scheme of the present invention is: axially be provided with oval pressurization hole on the bar shaped blade plate, and axially also be drilled with the round thread hole at the bar shaped blade plate, screwed hole and pressurization hole are alternately, perhaps screwed hole is positioned at two of bar shaped blade plate, the pressurization hole is positioned at its middle part, is other spread patterns; Both sides in screwed hole and pressurization hole are provided with small boss, and described small boss is all in the same one side of blade plate.
The cross section of bar shaped blade plate of the present invention is arch, and small boss is positioned at the both sides of blade plate arch cambered surface.
The scheme that the present invention adopts oval pressurization hole and round thread hole to be used in combination combines conventional pressurized bone plate technology and biological inner fixer technology.Can be according to needs in the art, both can use standard screws to finish the power pressurization as Dynamic Compression Plate, reach: 1. anatomical reduction, strong fixing, postoperative functional exercise immediately is with the early recovery function, and needn't wait until after the union of fracture.2. distance plate sclerite far away is fixedly attached to purpose on the blade plate; Again can be as biological inner fixer, use lock screw to reach stable one-tenth angle and fix, help after the reduction of the fracture better fixing with keep, reach: 1. slide lock, reduced corresponding post-operative complication.2. not influencing blood supplies.Can also use this two kinds of technology simultaneously, both make support, can pressurize again.The present invention is with the power separately design of hole and locking screw thread hole of pressurizeing, than easily processing of the incorporate combined hole design of aforementioned LCP, overcome the lower shortcoming of LCP combined hole position mechanical strength, and screwed hole can hold lock screw fully, the one-tenth angle and the axial stability of lock screw are good than LCP.
Or, be adapted to especially that osteoporosis is serious, unsettled patient fractures actually single will depend on concrete classification of fracture with use in conjunction.Let us choose up to see with screwed hole and pressurization hole blade plate alternately, still select for use screwed hole only to be positioned at the mode at two of bar shaped blade plate, should determine according to clinical needs.
The present invention is provided with small boss in the both sides in screwed hole and pressurization hole, and one of its purpose is the contact area that reduces blade plate and skeleton, and the blood that reduces simultaneously periosteum and skeleton supplies to destroy, thereby promotes union of fracture and reduce corresponding fracture complication incidence rate.Two of purpose is to strengthen the intensity at pressurization hole and screw hole position, makes blade plate intensity, rigidity basically identical on each cross section, avoids position, hole stress concentration and fatigue fracture.
Small boss of the present invention all in the same one side of blade plate, forms point with surface of bone during internal fixation and contacts, and has both kept the advantage to the pressurization of fracture site power, is applicable to Wicresoft's fracture internal fixation again.
The significant effect of the present invention is: realized some contact, made that the contact area between the skeleton has reduced 80% than conventional steel plates under blade plate and the plate, helped bone growth and development, reduced blood to periosteum and skeleton for destruction; It both can pressurize, and again can lock screw reaches stable one-tenth angle and fixed; Not only bending strength is higher, and Biofunctional is better; And processing is simple, and is with low cost, is easy to production domesticization.
The present invention is further described below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the front view of traditional blade plate;
Fig. 2 is the rearview of Fig. 1;
Fig. 3 is the another kind of rearview of Fig. 1, promptly is the situation that has increased recess on Fig. 2 basis;
Fig. 4 is the B-B cutaway view of Fig. 3;
Fig. 5 is the front view of blade plate of the present invention;
Fig. 6 is the rearview of Fig. 5, also is first kind of embodiment of the present invention;
Fig. 7 is the A-A cutaway view of Fig. 6;
Fig. 8 is that the P of Fig. 6 is to figure;
Fig. 9 is a partial enlarged drawing among Fig. 7;
Figure 10 is second kind of embodiment of rearview of the present invention;
Figure 11 is the third embodiment of rearview of the present invention;
Figure 12 is the 4th kind of embodiment of rearview of the present invention;
Figure 13 is the connection layout of the present invention and bone, promptly uses state reference map;
Figure 14 is the partial structurtes sketch map of LCP blade plate in the background technology.
The specific embodiment
Please see Figure 5, Fig. 6, Fig. 7, the present invention mainly is made of blade plate 1, small boss 2, pressurization hole 3, screwed hole 4, wherein on bar shaped blade plate 1, axially be provided with oval pressurization hole 3, and bar shaped blade plate 1 axially also be drilled with round thread hole 4, screwed hole 4 and pressurization hole 3 are alternately; Both sides in screwed hole 4 and pressurization hole 3 are provided with small boss 2, and described small boss 2 is all in the same one side of blade plate 1.
As shown in Figure 8: the cross section of bar shaped blade plate 1 is arch, and small boss 2 is positioned at the both sides of blade plate 1 arch cambered surface.
As shown in Figure 9: described oval pressurization hole 3 is counterbores, and its port is concave spherical surface.
Can further see from Fig. 6, Fig. 7: the cross section of small boss 2 is isosceles trapezoid, and its bottom surface is a rectangle.
Above-mentioned Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 are the first embodiment of the present invention, and it is that pressurization hole 3 is positioned in the middle of the blade plate, and screwed hole 4 is positioned at two, pressurization hole 3 and screwed hole 4 equalizations situation alternately.The present invention also can be arranged on screwed hole 4 two (as Figure 10) of blade plate 1, or increased pressure board 3 is positioned at the blade plate two ends.Also can be with pressurization hole 3 and screwed hole 4 not according to equalization (as Figure 10, Figure 11, Figure 12) alternately.The length of contact plate is according to patient's individual instances decision.
Please see Figure 13, the present invention will have the one side of small boss 2 to contact with bone when fracturing internal fixation, form the some contact, supply with protection blood.If when needing the strong fixing or sclerite far away to be fixedly attached on the blade plate, use oval pressurization hole 3, finish power with standard screws 5 and pressurize apart from plate; As if the need slide lock or for osteoporosis is serious, unsettled patient fractures, use lock screw 6 to reach stable one-tenth angle and fix, like this, help after the reduction of the fracture better fixing with keep, can also use these two kinds fixed installation holes simultaneously according to concrete classification of fracture.
Claims (4)
1. dot contacting locked pressurized bone plate axially is provided with oval pressurization hole (3) on bar shaped blade plate (1), it is characterized in that: bar shaped blade plate (1) axially also be drilled with round thread hole (4), screwed hole (4) and pressurization hole (3) are alternately; Both sides in screwed hole (4) and pressurization hole (3) are provided with small boss (2), and described small boss (2) is all in the same one side of blade plate (1).
2. according to the described dot contacting locked pressurized bone plate of claim 1, it is characterized in that: the cross section of bar shaped blade plate (1) is arch, and small boss (2) is positioned at the both sides of blade plate (1) arch cambered surface.
3. according to the described dot contacting locked pressurized bone plate of claim 1, it is characterized in that: described oval pressurization hole (3) is a counterbore, and its port is concave spherical surface.
4. according to claim 1 or 2 described dot contacting locked pressurized bone plates, it is characterized in that: the cross section of small boss (2) is isosceles trapezoid, and its bottom surface is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100571140A CN1698547A (en) | 2005-06-09 | 2005-06-09 | Dot contacting locked pressurized bone plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100571140A CN1698547A (en) | 2005-06-09 | 2005-06-09 | Dot contacting locked pressurized bone plate |
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| Publication Number | Publication Date |
|---|---|
| CN1698547A true CN1698547A (en) | 2005-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100571140A Pending CN1698547A (en) | 2005-06-09 | 2005-06-09 | Dot contacting locked pressurized bone plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103393458A (en) * | 2013-07-16 | 2013-11-20 | 江苏双羊医疗器械有限公司 | Anatomic calcaneus locking bone plate |
| CN110522500A (en) * | 2019-09-23 | 2019-12-03 | 昆明医科大学第二附属医院 | A kind of combined type Inferior tibiofibular joint fixed plate |
-
2005
- 2005-06-09 CN CNA2005100571140A patent/CN1698547A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103393458A (en) * | 2013-07-16 | 2013-11-20 | 江苏双羊医疗器械有限公司 | Anatomic calcaneus locking bone plate |
| CN110522500A (en) * | 2019-09-23 | 2019-12-03 | 昆明医科大学第二附属医院 | A kind of combined type Inferior tibiofibular joint fixed plate |
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