CN102018560B - Digitization bone fracture plate and manufacturing method thereof - Google Patents
Digitization bone fracture plate and manufacturing method thereof Download PDFInfo
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- CN102018560B CN102018560B CN 201010593637 CN201010593637A CN102018560B CN 102018560 B CN102018560 B CN 102018560B CN 201010593637 CN201010593637 CN 201010593637 CN 201010593637 A CN201010593637 A CN 201010593637A CN 102018560 B CN102018560 B CN 102018560B
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- blade plate
- supporting section
- screw hole
- threedimensional model
- bone fracture
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Abstract
The invention discloses a digitization bone fracture plate and a manufacturing method thereof. The bone fracture plate comprises a body, wherein the body comprises a supporting section and connecting sections extended from each end part of the supporting section; screw holes are arranged on the connecting sections; the thickness of the connecting sections is smaller than that of the supporting section; and the top surface of the body transits smoothly from the supporting section to the connecting sections. The manufacturing method comprises: a, data acquisition: acquiring digital imageology materials of bones; b, modeling: setting up a three-dimensional module of the bone fracture plate, thus profile data of the three-dimensional module of the bone fracture plate is obtained; c, command conversion: designing a processing command of a digital control processing device; and d, bone fracture plate molding: preparing the bone fracture plate by utilizing a rapid molding technology according to the processing command by the digital control processing device. The invention has the advantages that because the supporting section attached to the fracture breaking end comprises no screw holes, the supporting section has not damaged structure, can bear force well, and is not easy to bend and crack; because the thickness of the supporting section is reduced, the volume occupied in the body by the bone fracture plate is reduced, and the stimulation to the surrounding muscle and soft tissue is reduced; and the manufacturing method of the bone fracture plate can be used to ensure the smooth manufacturing of the bone fracture plate.
Description
Technical field
The present invention relates to the orthopedic medical device technical field, particularly a kind of Digitized bone plate and preparation method thereof.
Background technology
Blade plate is to treat at present the most frequently used internal fixation apparatus of fracture both at home and abroad.Up to now, use the plate in treating fracture history of existing over one hundred year, its treatment principle be at fracture site place otch, placement blade plate, make blade plate across fracture, use screw blade plate to be fixed in effective the fixing of skeleton acquisition of fracturing far and near two ends and making the fracture site place.Therefore, the structure of blade plate includes bar shaped or an arch blade plate body similar to the bone surface shape, offers be used to the screw hole that wears screw on this body.
But, existing blade plate, mostly spaced apartly on its body be provided with a plurality of screw holes, and in therapeutic process, generally only need hammer at two ends, fracture site place screw, therefore there is the part screw hole vacant, these vacant screw holes damage the structure of blade plate body, have reduced the structural strength of body, have formed simultaneously region of stress concentration, movablely after surgery comprehensively easily form blade plates bending, even fracture at these vacant screw hole locations when stressed; If especially the blade plate body is provided with screw hole at the fracture site place or near the fracture site place, the place is that stress is the most easily concentrated part due to fracture site, blade plate bending or fracture occurrence probability increase greatly, make the fracture patient wound be difficult for healing, even Second fracture.
For avoiding bending or fracture at screw hole location generation blade plate, existing way is generally to improve the structural strength of blade plate by strengthening the methods such as screw hole periphery blade plate body thickness.Be that 200610069520.3 Chinese patent application document namely discloses a kind of breakage-proof bone-setting plate as application number, its structure comprises that mainly cross section is arch or flat blade plate body, be provided with the screw hole that passes for bone screw on described blade plate body, described blade plate body is provided with near the blade plate body edges of the side surface of bone, close screw hole the strip projection of moving towards along the blade plate body edges, and described strip projection corresponds respectively to screw hole separately.The blade plate of said structure has no doubt strengthened the structural strength of body at screw hole location, but increased the thickness of blade plate at the strip high spot, the increase that causes blade plate to account for the body internal volume easily causes surrounding tissue and skin tension to increase, and is unfavorable for wound closure; Steel plate and fracture site are not fitted and also can be caused steel plate to stimulate surrounding tissue and muscle to cause pain, are unfavorable for suffering from the bone activity, affect the recovery of skeletal function.
Summary of the invention
The object of the invention is to provides a kind of raising intensity for the deficiencies in the prior art, reduces the fracture occurrence probability, and reduces the blade plate of muscle, soft tissue irritation on every side; A kind of preparation method of this blade plate is provided simultaneously.
For achieving the above object, the present invention adopts following technical scheme:
A kind of Digitized bone plate, it comprises body, described body offers screw hole, described body comprises the supporting section that is arranged at corresponding fracture site, and the linkage section that extends to fracture site far and near both sides respectively from described supporting section each end, described screw hole all is opened in described linkage section, and the thickness of described linkage section is less than described supporting section, described body bottom surface is the cambered surface that is complementary with bone surface, and described body end face seamlessly transits to described linkage section from described supporting section.
The present invention includes following further technical scheme.
Described body is at the width in the zone that the offers screw hole width greater than the zone of not offering screw hole.
Wherein, described screw hole is opened in the position of close described body end in described linkage section.
Wherein, described screw hole is the taper thread hole.
As realizing another goal of the invention technical scheme of the present invention, a kind of preparation method of Digitized bone plate comprises the following steps: a, data acquisition gather the digital image data of skeleton, and input computer; B, modeling utilize the skeleton digital image data that gathers to set up the skeleton threedimensional model, utilize the blade plate threedimensional model of be shaped control software design and described skeleton threedimensional model coupling, obtain the outline data of blade plate threedimensional model; C, instruction transformation design the processing instruction of numerically controlled processing equipment, and export described processing instruction to numerically controlled processing equipment according to the outline data of blade plate threedimensional model; D, blade plate molding, numerically controlled processing equipment utilize rapid shaping technique to prepare the blade plate that is complementary with described blade plate threedimensional model according to described processing instruction.
Wherein, in described step b, " generate the blade plate threedimensional model with described skeleton threedimensional model coupling ", be specially, utilize the stress characteristic of finite element technique analyzing bone different parts, obtain the mechanics parameter at each position, according to supporting section and the linkage section form of the described blade plate of described mechanics parameter design, quantity and the position of design screw hole.
Further, also include following steps: e, polish after described steps d, remove the burr of described blade plate, carry out the surface treatment of blade plate.
Wherein, in described step e, described surface treatment comprises surface finish processing, inferior optical processing, slightly washes and/or fine purifiation.
Further, further comprising the steps of after described step e: f, encapsulation, will complete the surface-treated blade plate and carry out the sterilization processing, and encapsulation.
Wherein, described steps d comprises: the preparation of d1, stock, the thick embryo of the described blade plate body of molding, and on described thick embryo prefabricated screw hole, form prefabricated component; D2, plastotype utilize numerically controlled processing equipment to carry out rapid shaping to described prefabricated component and process, and remove surplus, the blade plate that preparation and described blade plate threedimensional model are complementary.
Beneficial effect of the present invention is: blade plate of the present invention comprises body, described body offers screw hole, described body comprises the supporting section that is arranged at corresponding fracture site, and the linkage section that extends to fracture site far and near both sides respectively from described supporting section each end, described screw hole all is opened in described linkage section, the thickness of described linkage section is less than described supporting section, described body bottom surface is the cambered surface that is complementary with bone surface, and described body end face seamlessly transits to described linkage section from described supporting section; Due to the described supporting section that fits in fracture site without screw hole, its structure is not damaged, intensity is guaranteed, movable comprehensive stressed good when stressed after internal fixation, be difficult for the bending fracture, reduce the generation of sending out again the complication such as fracture, nonunion, be conducive to the recovery of limbs of patient function; And less than described supporting section, blade plate accounts for the body internal volume to be reduced due to the thickness of linkage section, thereby has reduced muscle, soft tissue irritation on every side; Blade plate preparation method provided by the present invention is combined the digital image data of skeleton with rapid shaping technique, in order to prepare smoothly above-mentioned blade plate.
Description of drawings
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not consist of any limitation of the invention.
Accompanying drawing 1 is the structural representation of Digitized bone plate of the present invention.
Accompanying drawing 2 is cross-sectional view of Digitized bone plate of the present invention.
Fig. 1 and Fig. 2 comprise:
1---body
11---supporting section
12---linkage section
2---screw hole.
The specific embodiment
A kind of Digitized bone plate, it comprises body 1, described body 1 offers screw hole 2, described body 1 comprises the supporting section 11 that is arranged at corresponding fracture site, and the linkage section 12 that extends to fracture site far and near both sides respectively from described supporting section 11 each ends, described screw hole 2 all is opened in described linkage section 12, the thickness of described linkage section 12 is less than described supporting section 11, described body 1 bottom surface is the cambered surface that is complementary with bone surface, and described body 1 end face seamlessly transits to described linkage section 12 from described supporting section 11.
Blade plate of the present invention in use, described body 1 is affixed on the fractured bones surface, described supporting section 11 is affixed on the fracture site place, described linkage section 12 is affixed on respectively the bone surface of the far and near end of fracture site, and by screw, described linkage section 12 is individually fixed in the far and near skeleton of holding of fracture site, thereby fractured bones is fixed, at utmost recover the planarization of fracture site, fixedly secure, provide the skeleton early ambulant to temper required stability, avoid the generation of the fracture complication that joint immobilization causes, at utmost recover the function in joint.
Due to the described supporting section 11 that fits in fracture site without screw hole 2, its structure is not damaged, intensity is guaranteed, movable comprehensive stressed good when stressed after internal fixation, be difficult for the bending fracture, reduce the generation of sending out again the complication such as fracture, nonunion, be conducive to the recovery of limbs of patient function; And less than described supporting section 11, blade plate accounts for the body internal volume to be reduced due to the thickness of linkage section 12, thereby has reduced muscle, soft tissue irritation on every side.
Blade plate of the present invention adopts the method preparation that comprises the following steps: a, data acquisition gather the digital image data of skeleton, and input computer; B, modeling utilize the skeleton digital image data that gathers to set up the skeleton threedimensional model, utilize the blade plate threedimensional model of be shaped control software design and described skeleton threedimensional model coupling, obtain the outline data of blade plate threedimensional model; C, instruction transformation design the processing instruction of numerically controlled processing equipment, and export described processing instruction to numerically controlled processing equipment according to the outline data of blade plate threedimensional model; D, blade plate molding, numerically controlled processing equipment utilize rapid shaping technique to prepare the blade plate that is complementary with described blade plate threedimensional model according to described processing instruction.
Wherein, described skeleton digital image data comprises the data that the digitized image such as thin layer Spiral CT scan data system etc. gathers, at present, digitized x-ray image system and digitized eeg collection system have been reached ripe, progressively be applied to clinical at department of cerebral surgery, spinal surgery, oral surgery, Genneral Surgery, Breast Surgery, thoracic surgery etc., therefore, do not give unnecessary details acquisition principle and the detailed process of skeleton digital image data here.
Wherein, described numerically controlled processing equipment can be numerically controlled lathe, numerical control press, or the numerically controlled processing equipment of other type such as rapid prototyping by laser cladding equipment, these numerically controlled processing equipments are technology maturation carry out the labyrinth parts rapid shaping manufacturing field of digital control processing according to the 3 d part model in, and its machining accuracy and process velocity are enough to satisfy blade plate rapid shaping of the present invention manufacturing.Here also repeat no more structure and the operation principle of described numerically controlled processing equipment.
Body 1 of the present invention is at the width in the zone that offers screw hole 2 width greater than the zone of not offering screw hole 2.Increase the width that described linkage section 12 offers the zone of screw hole 2, strengthened on the one hand should the zone structural strength, increased on the other hand the fitting area of linkage section 12 with skeleton, improved stable connection.
Wherein, described screw hole 2 is opened in the position of the interior close described body of described linkage section 12 1 end.
Wherein, described screw hole 2 is the taper thread hole.Strengthen connective stability between screw and body 1 with this, the phenomenon that screw can not be become flexible, thus accelerate the recovery of knochenbruch
In the preparation method of blade plate of the present invention, " generating the blade plate threedimensional model with described skeleton threedimensional model coupling " of described step b, be specially, utilize the stress characteristic of finite element technique analyzing bone different parts, obtain the mechanics parameter at each position, according to supporting section 11 and linkage section 12 forms of the described blade plate of described mechanics parameter design, quantity and the position of design screw hole 2.Wherein, described finite element technique refers to utilize the method for mathematical approach that actual physical system (how much and load working condition) is simulated.Also utilize simple and interactional element, namely the unit, just can remove to approach with the unknown quantity of limited quantity the real system of unlimited unknown quantity.Finite element analysis is to analyze static state or dynamic physical objects or physical system with Finite Element Method.In this method object or system be broken down into by a plurality of that interconnect, simply, the geometric model that independently forms.These quantity of independently putting are limited in this method, therefore are called as finite element.Out get equilibrium equation by deriving in the physical model of reality and be used on each point, produced thus an equation group.This equation group can be found the solution with the method for linear algebra.The degree of accuracy of finite element analysis can't infinitely improve.The number of unit arrives the degree of accuracy of separating after certain altitude and no longer improves, and only has improve constantly computation time.Finite element analysis can be used to analyze more complicated, with the system that algebraic method in general can't enough accurately be analyzed, the result of using other method to provide can be provided for it.Generally use in practice computer to solve number and the equation group of the flood tide that occurs when analyzing.When the pressure in analyzing an object or system and distortion, finite element analysis is a kind of means commonly used.In this blade plate preparation method, utilize the stress characteristic of finite element technique analyzing bone different parts, the blade plate stress of design and the skeleton stress state at this position are complementary, thereby make blade plate reduce to greatest extent shared volume in body and guarantee structural strength.
Wherein, also include following steps: e, polish after described steps d, remove the burr of described blade plate, carry out the surface treatment of blade plate.
Particularly, in described step e, described surface treatment comprises surface finish processing, inferior optical processing, slightly washes and/or fine purifiation.
Blade plate after polish is processed has further reduced the stimulation of muscle and tissue on every side, and it is good that simultaneously suitable surface roughness and surface compact degree are fitted blade plate and skeleton, is conducive to bone growth.
Preferably, further comprising the steps of after described step e: f, encapsulation, will complete the surface-treated blade plate and carry out the sterilization processing, and encapsulation.
As a kind of concrete application of this blade plate preparation method, described steps d can comprise step by step following: the preparation of d1, stock, the thick embryo of the described blade plate body 1 of molding, and on described thick embryo prefabricated screw hole 2, the formation prefabricated component; D2, plastotype utilize numerically controlled processing equipment to carry out rapid shaping to described prefabricated component and process, and remove surplus, the blade plate that preparation and described blade plate threedimensional model are complementary.
The prefabricated operation of stock has reduced the processing capacity of numerically controlled processing equipment, has improved working (machining) efficiency, has shortened process time, has further improved the suitability of this preparation method.
Certainly, as adopting the quick molding method such as rapid prototyping by laser cladding, also can be without the prefabricated operation of above-mentioned stock, this mainly decides according to the numerically controlled processing equipment that adopts and quick molding method, does not affect blade plate of the present invention and prepares effect.
The preparation method of this blade plate combines digital image data, the generation of skeleton threedimensional model, the design of blade plate threedimensional model of skeleton with labyrinth parts rapid shaping technique, with smooth preparation blade plate of the present invention, make prepared blade plate adapt to the needs of the different parts of different skeletons, skeleton.Experimental data shows, adopt the present invention to prepare a described blade plate, the design of the foundation of skeleton threedimensional model and blade plate threedimensional model needs 5 to 8 hours used times, the molding of blade plate stock needs 2 to 4 hours, plastotype needs 2 to 4 hours, polish 3 to 6 hours, and packaged sterile is no more than 3 hours, the whole used time is no more than 30 hours, is applicable to the quick manufacturing of blade plate fully.
The above is only better embodiment of the present invention, therefore all equivalences of doing according to the described structure of patent claim of the present invention, feature and principle change or modify, is included in patent claim of the present invention.
Claims (10)
1. Digitized bone plate, it comprises body, described body offers screw hole, it is characterized in that: described body comprises the supporting section that is arranged at corresponding fracture site, and the linkage section that extends to fracture site far and near both sides respectively from described supporting section each end, described screw hole all is opened in described linkage section, the thickness of described linkage section is less than described supporting section, described body bottom surface is the cambered surface that is complementary with bone surface, and described body end face seamlessly transits to described linkage section from described supporting section.
2. Digitized bone plate according to claim 1 is characterized in that: described body is at the width in the zone that the offers screw hole width greater than the zone of not offering screw hole.
3. Digitized bone plate according to claim 2 is characterized in that: described screw hole is opened in described linkage section the position near described body end.
4. Digitized bone plate according to claim 3, it is characterized in that: described screw hole is the taper thread hole.
5. preparation method that is used for processing according to claim 1～4 described blade plates of any one is characterized in that it comprises the following steps:
A, data acquisition gather the digital image data of skeleton, and input computer;
B, modeling utilize the skeleton digital image data that gathers to set up the skeleton threedimensional model, utilize the blade plate threedimensional model of be shaped control software design and described skeleton threedimensional model coupling, obtain the outline data of blade plate threedimensional model;
C, instruction transformation design the processing instruction of numerically controlled processing equipment, and export described processing instruction to numerically controlled processing equipment according to the outline data of blade plate threedimensional model;
D, blade plate molding, numerically controlled processing equipment utilize rapid shaping technique to prepare the blade plate that is complementary with described blade plate threedimensional model according to described processing instruction.
6. blade plate preparation method according to claim 5, it is characterized in that: in described step b, " generate the blade plate threedimensional model with described skeleton threedimensional model coupling ", be specially, utilize the stress characteristic of finite element technique analyzing bone different parts, obtain the mechanics parameter at each position, according to supporting section and the linkage section form of the described blade plate of described mechanics parameter design, quantity and the position of design screw hole.
7. in blade plate preparation method according to claim 6, it is characterized in that, also include following steps after described steps d:
E, polish, the burr of the described blade plate of removal carries out the surface treatment of blade plate.
8. blade plate preparation method according to claim 7, is characterized in that, in described step e, described surface treatment comprises surface finish processing, inferior optical processing, slightly washes and/or fine purifiation.
9. blade plate preparation method according to claim 8, is characterized in that, and is further comprising the steps of after described step e: f, encapsulation, and will complete the surface-treated blade plate and carry out the sterilization processing, and encapsulation.
10. blade plate preparation method according to claim 9, is characterized in that, described steps d comprises:
The preparation of d1, stock, the thick embryo of the described blade plate body of molding, and on described thick embryo prefabricated screw hole, form prefabricated component;
D2, plastotype utilize numerically controlled processing equipment to carry out rapid shaping to described prefabricated component and process, and remove surplus, the blade plate that preparation and described blade plate threedimensional model are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010593637 CN102018560B (en) | 2010-12-17 | 2010-12-17 | Digitization bone fracture plate and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010593637 CN102018560B (en) | 2010-12-17 | 2010-12-17 | Digitization bone fracture plate and manufacturing method thereof |
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| CN102018560A CN102018560A (en) | 2011-04-20 |
| CN102018560B true CN102018560B (en) | 2013-06-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105069181A (en) * | 2015-07-03 | 2015-11-18 | 河海大学常州校区 | Customized far-end dissect type bone plate design method based on patient femur parameter |
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| CN102961176B (en) * | 2012-12-13 | 2016-12-07 | 哈尔滨理工大学 | The method for optimizing of Different Internal Fixations for Femoral Neck Fractures |
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| CN104240298A (en) * | 2014-09-10 | 2014-12-24 | 同济大学 | Three-dimensional finite element constructing method based on medical image data LISS-DF to cure distal femur fracture |
| CN104933263B (en) * | 2015-07-03 | 2018-02-16 | 河海大学常州校区 | A kind of bone plate Design Methods for Series based on average femur model |
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| CN105832397A (en) * | 2016-04-27 | 2016-08-10 | 广州雄俊智能科技有限公司 | Personalized bone fracture plate and manufacturing method thereof |
| CN105943148A (en) * | 2016-06-01 | 2016-09-21 | 广州雄俊智能科技有限公司 | Personalized bone fracture plate and manufacturing method thereof |
| CN105943150A (en) * | 2016-06-06 | 2016-09-21 | 广州雄俊智能科技有限公司 | Personalized bone fracture plate and manufacturing method thereof |
| CN106108999A (en) * | 2016-06-12 | 2016-11-16 | 谭海涛 | A kind of personalized blade plate and manufacture method thereof |
| CN105919664A (en) * | 2016-06-14 | 2016-09-07 | 广州雄俊智能科技有限公司 | Personalized bone plate and manufacturing method thereof |
| CN106202619A (en) * | 2016-06-27 | 2016-12-07 | 河海大学常州校区 | Blade plate optimization method towards personalized designs |
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| CN105069181B (en) * | 2015-07-03 | 2018-08-03 | 河海大学常州校区 | Personalized distal end dissection type bone fracture plate design method based on patient femur's parameter |
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