CN113397702B

CN113397702B - Mandible prosthesis and manufacturing method thereof

Info

Publication number: CN113397702B
Application number: CN202110689577.8A
Authority: CN
Inventors: 李春燕
Original assignee: Shenzhen Excellent Technology LLC
Current assignee: Shenzhen Excellent Technology LLC
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-12-27
Anticipated expiration: 2041-06-22
Also published as: CN113397702A

Abstract

The invention belongs to the technical field of medicine, and discloses a mandible prosthesis and a manufacturing method thereof. The mandible comprises a jaw body, a gap is formed in the jaw body, the jaw prosthesis comprises a prosthesis body and a connecting piece, the prosthesis body is used for filling the gap in the jaw body, the prosthesis body comprises an outer grid body and an inner grid body, the inner grid body is sleeved in the outer grid body and connected to the inner wall of the outer grid body, and the prosthesis body is connected to the jaw body through the connecting piece. The manufacturing method of the mandible prosthesis comprises the following steps of S1, modeling a mandible body to obtain notch structure data of the mandible body; s2, setting a body model according to the structural data of the notch, wherein the body model comprises an outer grid model and an inner grid model, and sleeving the inner grid model in the outer grid model and connecting the inner grid model with the outer grid model; and S3, connecting the body model to the jaw body through the connecting piece model.

Description

Mandible prosthesis and manufacturing method thereof

Technical Field

The invention relates to the technical field of medicine, in particular to a mandible prosthesis and a manufacturing method thereof.

Background

When the organ structure of the human body cannot bear corresponding functions due to defects, the organ structure needs to be repaired and rebuilt through surgical operations. When the mandible is defective, facial deformities and dysfunctions can be caused, and surgical repair and reconstruction are needed to restore normal functions of the human body. The common mandible restoration methods comprise two methods, one is to move the rib, the ilium or the fibula of a patient, then further process the autogenous bone to replace the mandible, and transplant the autogenous bone of the patient, so that not only is the operation complexity increased, but also the pain of the patient is increased. The other is to repair the mandible by using a biological material, however, the mandible repaired by using the repair material has the defects of small bearing capacity, large brittleness and difficult shaping, the condition of looseness, displacement, falling off or fracture of the prosthesis is easy to occur, the service life cycle is short, and the requirements of mandible repair cannot be met.

Disclosure of Invention

The invention aims to provide a mandible prosthesis and a manufacturing method thereof, which can reduce the difficulty of mandible repair surgery.

In order to achieve the purpose, the invention adopts the following technical scheme:

a mandible prosthesis, the mandible comprising a mandible body and a part to be repaired, comprising:

the prosthesis body is used for filling the gap on the jaw bone body and comprises an outer grid body and an inner grid body, and the inner grid body is sleeved in the outer grid body and connected to the inner wall of the outer grid body;

the prosthesis body is connected to the jaw body through the connecting piece.

Preferably, the outer mesh body includes a plurality of first cells connected to each other, and the inner mesh body includes a plurality of second cells connected to each other.

Preferably, the mandibular prosthesis further comprises a limiting member for increasing the frictional force between the mandibular body and the connecting member.

Preferably, the connecting piece comprises an accommodating part and a connecting part, the accommodating part is used for partially accommodating the prosthesis body, the connecting part is connected to the jaw body, a groove is formed in one side of the connecting part, which is close to the jaw body, and the limiting part is arranged in the groove.

Preferably, the connecting piece is provided with a through hole for allowing nutrients needed by the body to pass through.

Preferably, the connecting member is detachably attached to the mandible.

A method of manufacturing a mandibular prosthesis, comprising the steps of:

s1, modeling a jaw bone body to obtain the notch structure data of the jaw bone body;

s2, setting a body model according to the structural data of the gap, wherein the body model comprises an outer grid model and an inner grid model, and the inner grid model is sleeved in the outer grid model and connected to the outer grid model;

and S3, connecting the body model to the jaw body through a connecting piece model.

Preferably, after the step S1, the method further includes:

s11, analyzing the structural data of the notch, manufacturing a standard part, placing the standard part into the notch, and smoothing the edge of the standard part.

Preferably, in step S2, the standard component includes a hollow shell and an inner core sleeved in the hollow shell, the hollow shell is gridded to form the outer grid model, and the inner core is gridded to form the inner grid model.

Preferably, after step S2, the method further comprises: s21, placing the body model in the gap of the jaw bone body, and trimming the excessive part of the body model.

The invention has the beneficial effects that:

according to the invention, the gap on the jaw body is filled by the repairing piece body, and the repairing piece body is connected with the jaw body by using the connecting piece, so that the condition of extracting autologous bone of the body of a patient is prevented, the pain of the patient is reduced, and the connecting strength between the repairing piece body and the jaw body is enhanced and the dislocation of the repairing piece body is prevented by additionally arranging the connecting piece for connection.

The invention provides a manufacturing method of a mandible prosthesis, which comprises the steps of firstly utilizing modeling software to model a mandible body to obtain structural data at a gap of the mandible body, then manufacturing an outer grid model and an inner grid model according to the structural data, and connecting the body models to the mandible body through connecting pieces to replace human bones. The ontology model set by modeling meets the requirements of the mandible on the mechanical property of repairing, and the safety and effectiveness of repairing are met.

Drawings

Fig. 1 is a schematic structural view of a jaw body provided by a mandibular prosthesis according to an embodiment of the present invention;

FIG. 2 is a schematic structural view illustrating a connection member provided in a mandible prosthesis according to an embodiment of the present invention, which is connected to a jaw body;

FIG. 3 is a schematic structural view of a connecting member provided in a mandibular prosthesis according to an embodiment of the present invention;

fig. 4 is a flowchart provided by a method for manufacturing a mandibular prosthesis according to an embodiment of the present invention.

In the figure:

100. a jaw bone body; 200. a notch;

1. a connecting member; 11. an accommodating portion; 12. a connecting portion; 121. a groove; 13. and a through hole.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the embodiments of the present invention, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a mandible prosthesis, which relates to the technical field of medicine, and as shown in fig. 1 to 3, the mandible comprises a jaw body 100, a gap 200 is arranged on the jaw body 100, the mandible prosthesis comprises a prosthesis body and a connecting piece 1, the prosthesis body is used for filling the gap 200 on the jaw body 100, the prosthesis body comprises an outer grid body and an inner grid body, the inner grid body is sleeved in the outer grid body and connected to the inner wall of the outer grid body, and the prosthesis body is connected to the jaw body 100 through the connecting piece 1.

The gap 200 on the jaw body 100 is filled up through the repairing part body in the embodiment, the repairing part body is connected with the jaw body 100 through the connecting piece 1, the condition that the self bone of the patient is extracted is prevented, the pain of the patient is reduced, the connecting piece 1 is additionally arranged for connection, the connection strength between the repairing part body and the jaw body 100 is enhanced, and the dislocation of the repairing part body is prevented.

In particular, the outer mesh body includes a plurality of interconnected first cells and the inner mesh body includes a plurality of interconnected second cells. Preferably, the frame of the first unit cell is a cubic structure. The frame of the second unit cells is in a truncated octahedral structure.

In particular, the mandibular prosthesis further comprises a limiting member for increasing the frictional force between the mandibular body 100 and the connecting member 1. The limiting piece is arranged to prevent the connecting piece 1 from moving, and the condition of the prosthesis body is prevented from happening. Preferably, the limiting member comprises a plurality of third grids connected with each other, and the frame of the third grids is in a truncated octahedral structure.

Specifically, as shown in fig. 3, the connecting element 1 includes a receiving portion 11 and a connecting portion 12, the receiving portion 11 is used for partially receiving the prosthesis body, the connecting portion 12 is connected to the jawbone body 100, a groove 121 is formed on one side of the connecting portion 12 close to the jawbone body 100, and the limiting member is disposed in the groove 121. The accommodating part 11 has a certain limiting function on the prosthesis body. The stopper is disposed in the groove 121, so that friction between the jawbone body 100 and the connecting member 1 is increased, and movement of the connecting member 1 is prevented.

In particular, the connecting member 1 is provided with a through hole 13, and the through hole 13 is used for allowing the nutrient substances needed by the body to pass through. In the embodiment, the containing cavity is used for partially containing the prosthesis body, nutrients needed by the body cannot be transported through the connecting piece 1, and the through hole 13 is formed at the position of the containing cavity of the connecting piece 1 for the nutrients needed by the body to pass through. The through holes 13 can enhance the permeability to ensure the smoothness of the internal environment, and are beneficial to the growth and climbing of soft tissues.

In particular, the connecting member 1 is detachably attached to the mandible. Preferably, the connecting part 12 of the connecting member 1 is fixedly connected with the jawbone body 100 by titanium nails. The detachable connection has the advantage of convenient disassembly and assembly, and when the connecting piece 1 moves, a doctor can conveniently and timely adjust the mounting position of the connecting piece 1.

The embodiment also provides a manufacturing method of the mandible prosthesis, which comprises the following steps:

s1, modeling a jaw bone body 100 to obtain structural data of a gap 200 of the jaw bone body 100;

s2, setting a body model according to the structural data of the notch 200, wherein the body model comprises an outer grid model and an inner grid model, and sleeving the inner grid model in the outer grid model and connecting the inner grid model with the outer grid model;

and S3, connecting the body model to the jaw body through the connecting piece model.

The manufacturing method of the mandible prosthesis provided by the embodiment comprises the steps of firstly modeling the jaw body 100 by using modeling software to obtain the structural data of the gap 200 of the jaw body 100, then manufacturing an outer grid model and an inner grid model according to the structural data of the gap 200, connecting the body models to the jaw body 100 through connecting piece models, and replacing human bones. The body model set through modeling meets the requirements of mandible restoration mechanical performance, and meets the safety and effectiveness of restoration.

Preferably, the manufacturing method of the mandibular prosthesis further comprises S4, 3D printing the body model and the connecting member model. The body model and the connector model used in this embodiment are printed out by a 3D printing technique and connected to the jawbone body 100.

Specifically, after the step S1, the method further includes step S11 of analyzing the structural data of the notch 200, manufacturing a standard, placing the standard into the notch 200, and rounding the edge of the standard. A standard piece is manufactured according to the structural data at the gap 200, and it is judged whether the standard piece is identical to the structural size at the gap 200 of the jawbone body 100 by placing it at the gap 200.

Specifically, in step S2, the standard component includes a hollow shell and an inner core sleeved in the hollow shell, the hollow shell is meshed to form an outer mesh model, the inner core is meshed to form an inner mesh model, the hollow shell is meshed to form an outer mesh model composed of a plurality of first cells connected to each other, and the inner core is meshed to form an inner mesh model composed of a plurality of second cells connected to each other.

Specifically, after step S2, S21 is further included, the body model is placed in the gap 200 of the jaw body 100, and the excess part of the body model is trimmed. Establish interior grid body model cover in outer grid body model and be connected in outer grid body model to form the body model after the equipment, put breach 200 department on jaw body 100 with body model, carry out slick and sly processing to body model, trowel uneven region, verify whether the breach 200 on jaw body 100 is filled completely to the repair body of making, print out body model through 3D printing technique at last, make it replace human bone.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A mandibular prosthesis, the mandible comprising a jaw body (100), the jaw body (100) having a gap (200) therein, comprising:

the prosthesis body is used for filling the gap (200) on the jaw bone body (100), and comprises an outer grid body and an inner grid body, wherein the inner grid body is sleeved in the outer grid body and connected to the inner wall of the outer grid body;

a connecting piece (1), the prosthesis body is connected to the jaw body (100) through the connecting piece (1);

a limiting member comprising a plurality of interconnected third grids; the limiting piece is used for increasing the friction force between the jaw bone body (100) and the connecting piece (1);

the mandible prosthesis is prepared by the following method:

s1, modeling a jaw bone body (100) to obtain structural data of the gap (200) of the jaw bone body (100); analyzing the structural data of the notch (200), manufacturing a standard part, putting the standard part into the notch (200) and smoothing the edge of the standard part;

s2, setting a body model according to the structural data of the gap (200), wherein the body model comprises an outer grid model and an inner grid model, and sleeving the inner grid model in the outer grid model and connecting the inner grid model to the outer grid model;

s3, placing the body model in the gap (200) of the jaw bone body (100), trimming the excessive part of the body model, and connecting the body model to the jaw bone body (100) through a connecting piece model;

the standard component comprises a hollow shell and an inner core, the inner core is sleeved in the hollow shell, the hollow shell is formed in a gridding mode, the outer grid model is formed in a gridding mode, and the inner core is formed in a gridding mode, and the inner grid model is formed in the inner grid model.

2. The mandibular prosthesis of claim 1, wherein the outer mesh comprises a plurality of interconnected first cells and the inner mesh comprises a plurality of interconnected second cells.

3. The mandibular prosthesis according to claim 1, wherein the connecting part (1) comprises a receiving part (11) and a connecting part (12), the receiving part (11) is adapted to partially receive the prosthesis body, the connecting part (12) is connected to the mandibular body (100), a recess (121) is provided in a side of the connecting part (12) adjacent to the mandibular body (100), and the retaining part is provided in the recess (121).

4. The mandibular prosthesis according to claim 1, wherein said connecting member (1) has through holes (13) formed therein, said through holes (13) being for the passage of nutrients required by the body.

5. The mandibular prosthesis according to claim 1, wherein the connecting member (1) is removably connected to the mandibular body (100).