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3D-printing segmental bone defect repairing device and preparation method thereof

A 3D printing and bone defect technology, applied in 3D printing, additive manufacturing, manufacturing tools, etc., can solve the problems of being unable to bear weight, interfering with imaging examination results, and unfavorable for postoperative follow-up, so as to improve accuracy and reduce the number of perspectives , Improve the effect of osseointegration performance

Pending Publication Date: 2019-08-23
SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal materials have good mechanical properties, but the elastic modulus of metal materials is high, which can cause gravitational shielding after implantation and cause bone resorption
In addition, metal materials have metal artifacts, which interfere with the results of imaging examinations and are not conducive to postoperative follow-up
Ceramic materials and polymer materials, which are commonly used in clinical practice, have high biological activity, are conducive to cell growth and adhesion, and promote the repair of bone defect areas, but their mechanical properties are poor, and they cannot bear or only partially bear weight, which is not conducive to the repair of large bone defects.

Method used

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  • 3D-printing segmental bone defect repairing device and preparation method thereof
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  • 3D-printing segmental bone defect repairing device and preparation method thereof

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preparation example Construction

[0077] The second aspect of the present invention provides a method for preparing the above segmental bone defect repair device, comprising the following steps:

[0078] 1) Obtain the shape of the bone defect area by CT scanning;

[0079] 2) Modeling of the repair device to obtain a repair device model (such as a CAD model), the repair device model takes the bone defect area shape obtained in step 1) as the outer contour;

[0080] 3) 3D printing is carried out according to the restoration device model.

[0081] In a preferred embodiment, 2 nozzles are used for 3D printing, one nozzle is used for the repair body support 2 and the fixation plate 3, and the other nozzle is used for printing the segmental bone defect repair body 1 .

[0082] The segmental bone defect repair device is obtained through computer-aided design and manufacturing and 3D printing technology, the processing time is short and the cost is low. The overall shape of the segmental bone defect repair body 1 an...

Embodiment 1

[0085] A segmental bone defect repair device, comprising a segmental bone defect repair body 1, a repair body support 2 and a fixing plate 3, the segmental bone defect repair body 1 is set in the repair body support 2 , the repair body support 2 is arranged on the fixing plate 3 . The fixed plate 3 is sequentially provided with a first fixed plate segment 32, a second fixed plate segment 33 and a third fixed plate segment 34, the repair body support 2 is arranged on the second fixed plate segment 33, the Screw holes 31 are provided on the first fixing plate segment 32 and the third fixing plate segment 34 . The fixing plate 3 is provided with two screw holes 31 , one screw hole is set on the first fixing plate section 32 , and the other screw hole is set on the third fixing plate section 34 . The overall shape of the segmental bone defect repair body 1 and the repair body support 2 is the shape of the bone tissue defect. The repair body support 2 wraps the segmental bone def...

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Abstract

The invention provides a 3D-printing segmental bone defect repairing device and a preparation method thereof. The segmental bone defect repair device comprises a segmental bone defect repair body, a repair body support and a fixing plate. The segmental bone defect repair body is arranged in the repair body support, and the repair body support is arranged on the fixing plate, the fixing plate is provided with a plurality of screw holes, and the overall shape of the segmental bone defect repair body and the repair body support is the shape of defective bone tissue. According to the 3D-printing segmental bone defect repairing device, the overall shape of the segmental bone defect repair body and the repair body support is the shape of the defective bone tissue, personalized medical needs aremet, the initial stability is provided for the segmental bone defect repair body through the pre-arranged fixing plate and the screw holes, the accuracy of screw implantation is improved, and the number of times of fluoroscopy during an operation is reduced.

Description

technical field [0001] The invention belongs to the technical field of bone repair, and in particular relates to a 3D printed segmental bone defect repair device and a preparation method thereof. Background technique [0002] Large bone defects caused by trauma, infection, tumor, etc. often lead to prolonged operation time, high incidence of complications, high amputation rate and other risks, which is a difficult problem in current clinical work. At present, the "gold standard" in the clinical treatment of bone defects is autologous bone grafting. However, in addition to prolonged operation time and secondary operations, there are also problems such as donor site infection, pain, and limited number, which are not conducive to large bone defects. repair. At present, the widely researched and used bone repair materials are mainly metal materials, ceramic materials and polymer materials. Metal materials have good mechanical properties, but the elastic modulus of metal materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61L27/18A61L27/44A61L27/46A61L27/56A61L27/58
CPCA61F2/28A61L27/18A61L27/46A61L27/443A61L27/446A61L27/56A61L27/58A61F2002/2835A61F2002/30948A61F2002/30985A61F2002/30062A61F2002/30507A61L2430/02C08L61/16
Inventor 严孟宁谢凯王燎江旭韩学全
Owner SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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