CN106236185B

CN106236185B - 3D printing fibula osteotomy device and manufacturing and using method thereof

Info

Publication number: CN106236185B
Application number: CN201610587973.9A
Authority: CN
Inventors: 徐加杰; 葛明华; 陈超; 谭卓
Original assignee: Zhejiang Cancer Hospital
Current assignee: Zhejiang Cancer Hospital
Priority date: 2016-07-25
Filing date: 2016-07-25
Publication date: 2020-04-21
Anticipated expiration: 2036-07-25
Also published as: CN106236185A

Abstract

The invention relates to a 3D printing fibula osteotomy device and a manufacturing and using method thereof, and solves the problem that the existing fibula osteotomy operation depends on the judgment of the experience of a doctor, and the operation risk is high. This device includes the baffle that extends along the fibula direction, its characterized in that: the baffle is the metal baffle, and the transversal arc of personally submitting laminating fibula of medial surface of baffle corresponds with the baffle both ends and is provided with two semi-ring staple bolts, and the semi-ring staple bolt presss from both sides on the fibula with the tip lock of baffle side, encircleing, sets up the cutting guiding hole of a plurality of rectangular shapes on the baffle. The device adopts 3D metal printing and forming after computer simulation, and can meet the requirement of precise surgical operation of the fibula osteotomy guide plate; the both ends of baffle adopt the cusp to embrace and press from both sides the structure, use to draw to detain fixedly, adopt self-tapping screw fixed mode to further improve the stability of baffle on the bone face of intercepting.

Description

3D printing fibula osteotomy device and manufacturing and using method thereof

Technical Field

The invention relates to a medical device, in particular to a 3D printing fibula osteotomy device and a manufacturing and using method thereof, which are suitable for the field of surgical operations requiring fibula osteotomy forming.

Background

In recent years, there is a tendency that the number of cases of jaw bone defect and deformity caused by growth and development problems, traffic accidents, facial tumors, etc. is increasing, the complexity and difficulty of surgery is increasing, and the risk of surgery is increasing. The oral and maxillofacial surgery aiming at the diseases is a relatively complex operation, most of the stomatologists in hospitals in China currently carry out the operation by observing a diseased region through CT shot by a patient, reconstructing a three-dimensional model through professional medical software and formulating a corresponding operation scheme, but the operation scheme is a virtual scheme designed by the doctor in the medical software, in the actual operation, the doctor needs to manually intercept the autogenous fibula of the patient completely by virtue of own experience to complete the operation without physical support, the doctor is difficult to ensure that the length of the intercepted fibula meets the requirement of an ideal operation scheme, the intercepted fibula is too long, the healthy fibula of the patient can be wasted, the wound is enlarged, the implementation of the operation scheme can be influenced by the intercepted fibula being too short, even the operation fails, and the patient and the doctor can bear great operation risks, therefore, the accurate cutting of the length of the fibula is a precondition for successful completion of the jaw bone repair operation.

Disclosure of Invention

The invention aims to solve the problem that the operation risk is high due to the fact that the existing fibula osteotomy operation depends on experience judgment of a doctor, and provides a 3D printing fibula osteotomy device and a manufacturing and using method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a 3D prints fibula and cuts bone device, includes the baffle that extends along the fibula direction, baffle formula metal guide as an organic whole, the transversal arc of personally submitting the laminating fibula of medial surface of baffle are provided with two semi-ring staple bolts with the baffle both ends correspondence, and the semi-ring staple bolt presss from both sides on the fibula with the tip lock of baffle side, encircleing, sets up the cutting guiding hole of a plurality of rectangular shapes on the baffle. The main material of current common 3D printing fibula cuts bone conduction board is resin, but resin material probably influences the operation precision because of the heat produces the deformation when cutting in the art, probably produces the piece or the resin is smashed the end and is left over in the patient because of the application of cutting or screw even, and resin material is softer, can produce the displacement when carrying out the baffle task and influence the precision of operation. This scheme adopts metal material can avoid above problem, and present 3D printing technique has extended the titanium metal field, satisfies the 3D printing requirement of metal baffle, and the fibula metal baffle that adopts 3D to print can be fine must solve the problem in this aspect, has stably, and is firm, does not have the residue, should not warp, can satisfy the requirement of the accurate surgery operation of fibula cut bone baffle. Present widely used cuts bone conduction board mainly is the sectional type structure, and the middle small-size of adopting resin material links the structure, because resin material's hardness is not enough, often probably leads to appearing relative skew or small-size connection structure's fracture between the sectional type structure, and this product is the metal material, and for global design, does not have connection structure between section and the section, and global design has further improved the stability of baffle.

Preferably, the inner side wall of the semi-ring hoop is provided with a tooth-shaped bulge, and the top end of the tooth-shaped bulge is attached to the surface of the fibula. Compared with the existing resin guide plate, the metal guide plate is further subjected to proper structural improvement, the two ends of the guide plate are in a tooth-shaped encircling structure, and the guide plate is fixed by using the pull buckles, so that the cutting positioning is prevented from being influenced by sliding and displacement in the cutting process.

Preferably, the guide plate is further provided with a screw hole, and the screw hole is provided with a tapping screw for fixing the guide plate and the fibula. The stability is improved by adopting a metal self-tapping screw fixing mode on the intercepted bone surface. When fibula is cut, the mode of cutting the fibula in sections and then splicing the fibula into a target form is generally carried out, so that not all the cut fibula sections are required to be used, but the fibula sections required to be used are usually a plurality of sections of the fibula sections, and are usually discontinuous, and the middle of the fibula sections is separated by unused fibula sections. Because the fibula section that needs to use and the fibula section that does not use are spaced each other, when the fixing screw, fix the screw on the fibula section that does not use to reduce the damage to the fibula section that needs to use.

Preferably, the guide plate and the half-ring hoop are formed by 3D printing.

Preferably, the semi-ring hoop is made of metal materials consistent with the guide plate.

A manufacturing and using method of a 3D printing fibula osteotomy device comprises the following steps:

a. carrying out CT scanning on a patient with jaw bone defect, and then leading the CT into a computer to reconstruct a maxillofacial bone model and a fibula model;

b. on the reconstructed maxillofacial skeleton model, the cutting route of the resection part and the diseased jaw bone is determined, and the maxillofacial skeleton model is cut in a simulated way in a computer along the cutting route; replacing the resected diseased jaw bone model with a fibula model, and finding out a fibula section model for replacement, the length and angle of which are most suitable for the jaw face bone model incision;

c. determining the opening position and the opening angle of a cutting guide hole in the guide plate according to the length and the angle of a cut of the fibula section model, determining the position of a screw hole, ensuring that the screw hole is positioned in the middle of the cutting holes at two sides, and performing three-dimensional modeling on the guide plate and the semi-ring hoop to obtain the guide plate and semi-ring hoop models;

d. obtaining a guide plate model for fibula positioning and semi-ring hoop models at two ends by adopting 3D metal printing;

e. cutting the calf muscle of a patient, putting the sterilized guide plate into the cut, trying to fit the inner surface of the guide plate to the fibula of the patient, and determining the position of the fibula section to be cut when the inner surface of the guide plate is completely fitted with a certain section of the fibula;

f. fixing the semi-ring hoop and two ends of the metal guide plate on the fibula in a manner of fixing the semi-ring hoop by using pull buckles, and driving tapping screws into screw holes in the guide plate to further stabilize the fibula and the guide plate;

g. cutting guide holes in the guide plate represent a cutting path when the fibula is cut, and the cutting guide holes enter the cut fibula from the cutting guide holes by adopting swinging to form a sectional structure of the fibula;

h. and loosening the semi-ring hoops at the two ends, taking out the self-tapping screws fixed on the fibula one by one, and splicing the segmented fibula to be applied to the reconstruction of the jaw face.

The guide plate and the semi-ring hoop which are made of metal materials are manufactured by adopting 3D printing, so that the guide plate and the semi-ring hoop have the characteristics of stability, firmness, no residue and difficulty in deformation, and can meet the requirement of accurate surgical operation of the fibula osteotomy guide plate; the both ends of baffle adopt the cusp to embrace and press from both sides the structure, use to draw to detain fixedly, adopt self-tapping screw fixed mode to further improve the stability of baffle on the bone face of intercepting.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of one configuration of the present invention.

FIG. 2 is a schematic view of the structure of the guide plate of the present invention.

Fig. 3 is a schematic diagram of the structure of the half-ring hoop according to the present invention.

Fig. 4 is a schematic structural diagram of the guide plate and the fibula clamped by the semi-ring hoops.

In the figure: 1. guide plate, 2, semi-ring staple bolt, 3, cutting guiding hole, 4, dentate bulge, 5, screw hole, 6, fibula.

Detailed Description

The invention is further illustrated by the following specific examples in conjunction with the accompanying drawings.

Example (b): a 3D printing fibula osteotomy device, as shown in figure 1. The device comprises a guide plate 1, wherein two ends of the guide plate are respectively and correspondingly provided with a semi-ring hoop 2. The guide plate 1 is structurally shown in fig. 2 and 4, the guide plate is an integrated metal guide plate, the guide plate extends along the fibula direction, and the cross section of the inner side surface of the guide plate is in an arc shape fitting with the fibula 6. The guide plate is provided with a plurality of strip-shaped cutting guide holes 3 and a plurality of screw holes 5, and the screw holes are positioned in the middle positions of the cutting guide holes on the two sides. As shown in fig. 3, the inner side surface of the half-ring hoop 2 is provided with a plurality of tooth-shaped protrusions 4, and the tips of the tooth-shaped protrusions are attached to the surface of the fibula. As shown in fig. 4, the semi-ring hoop is buckled with the end part of the side edge of the guide plate and clamped on the fibula 6 in a surrounding manner, the guide plate is attached to the surface of the fibula, and the toothed convex top of the semi-ring hoop is arranged on the surface of the other side of the fibula. And the guide plate and the fibula are further fixed at the screw hole position by adopting self-tapping screws. When fibula is cut, the mode of cutting the fibula in sections and then splicing the fibula into a target form is generally carried out, so that not all the cut fibula sections are required to be used, but the fibula sections required to be used are usually a plurality of sections of the fibula sections, and are usually discontinuous, and the middle of the fibula sections is separated by unused fibula sections. Because the fibula section that needs to use and the fibula section that does not use are spaced each other, when the fixing screw, fix the screw on the fibula section that does not use to reduce the damage to the fibula section that needs to use.

Claims

1. The utility model provides a 3D prints fibula and cuts bone device, includes the baffle that extends along the fibula direction, its characterized in that: the baffle formula metal baffle as an organic whole, the transversal arc of personally submitting the laminating fibula of medial surface of baffle correspond with the baffle both ends and are provided with two semi-ring staple bolts, still are equipped with the screw hole on the baffle, are equipped with the self-tapping screw fixed with baffle and fibula in the screw hole, and the semi-ring staple bolt presss from both sides on the fibula with the tip lock of baffle side, encircleing, sets up the cutting guiding hole of a plurality of rectangular shapes on the baffle.

2. The 3D printing fibula osteotomy device of claim 1, wherein: the inner side wall of the semi-ring hoop is provided with a toothed bulge, and the top end of the toothed bulge is attached to the surface of a fibula.

3. The 3D printing fibula osteotomy device of claim 1, wherein: and the guide plate and the semi-ring hoop are formed by 3D printing.

4. The 3D printing fibula osteotomy device of claim 1, wherein: the semi-ring hoop is made of metal materials consistent with the guide plate.