CN210644250U - Mandible defect prosthesis - Google Patents
Mandible defect prosthesis Download PDFInfo
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- CN210644250U CN210644250U CN201920963280.4U CN201920963280U CN210644250U CN 210644250 U CN210644250 U CN 210644250U CN 201920963280 U CN201920963280 U CN 201920963280U CN 210644250 U CN210644250 U CN 210644250U
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Abstract
The mandible defect restoration comprises a porous body, wherein the porous body is divided into a first area and a second area, the first area is positioned at the periphery of the second area, a plurality of first through holes are formed in the first area, a plurality of second through holes are formed in the second area, a third through hole is formed in the middle of the porous body, and the third through hole penetrates through the porous body. The utility model overcomes the defects of the prior art, has reasonable design, and fixes the restoration body on the host bone by implanting bone screws into the screw holes on the bone fracture plate; so as to realize the functions of initial fixation and long-term bearing; the pore size of the porous body area contacting with host bone is set to be 200-700 μm, so as to be suitable for bone ingrowth and be beneficial to occlusion reconstruction; the pore size of the porous body region of the soft tissue contact surface is 700-1200um to accommodate soft tissue ingrowth to prevent prosthesis exposure.
Description
Technical Field
The utility model relates to a medical science prosthetic prosthesis technical field, concretely relates to jaw defect prosthesis down.
Background
The defects of the lower jaw bone tissue caused by trauma, tumor and the like cause a plurality of clinical problems. At present, for repairing the mandible bone tissue, the autologous fibula with two blood vessels of a patient is usually trimmed into the shape of a mandible defect repairing body, the fibula and the tissues around the mandible are fixed by a medical pure titanium bone fracture plate, the blood vessels of the fibula are communicated with the blood vessels in the mandible, the fibula and the mandible can grow into a whole, the repair of the mandible defect is finally realized, the clinical effect is excellent, and the mandible defect repairing method becomes a clinical treatment means for repairing the mandible defect at home and abroad. But secondary trauma is a problem with fibula from the body.
Beijing Aikanglicheng medical instrument, Inc. has provided a jaw prosthesis (201210488763.6) for replacing a physiological jaw by setting at a position where a patient lacks the physiological jaw, comprising: a jaw repairing body having the same shape as a physiological jaw; the bone fusion surface is arranged on the surface of the jaw bone repair main body combined with the adjacent physiological bone; the bone fusion surface has a microporous structure for bone cell growth. By applying the technical proposal of the utility model, the jaw prosthesis is highly similar to the physiological bone missing from the patient in shape, fully fills and seals the defect position, and has good position fixation; and a bone fusion surface which is convenient for bone cells to grow in is arranged, thus being beneficial to the long-term bone fusion of the restoration and the physiological bone. However, the jaw prosthesis has insufficient stress for repairing large bone defects, and in addition, no detailed research is available on how the microporous structure is suitable for bone cell ingrowth and soft tissue ingrowth. The utility model discloses a mandible restoration not only satisfies the demand of short-term bearing, is favorable to the bone to grow into and the soft tissue grows into for a long time, makes mandible restoration life-span.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides a jaw defect restoration body, jaw defect restoration technique among the prior art has been overcome and is difficult to the ideal jaw prosthesis that rebuilds shape and physiology bone and accord with, and it is unsatisfactory to have defective position to fill to seal, and short-term unable bearing, and long term restoration body and osseointegration effect are not good, and long term restoration body and soft tissue do not long and shut the problem on every side.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
the mandible defect restoration comprises a porous body, wherein the porous body is divided into a first area and a second area, the first area is positioned at the periphery of the second area, a plurality of first through holes are formed in the first area, a plurality of second through holes are formed in the second area, a third through hole is formed in the middle of the porous body, and the third through hole penetrates through the porous body.
Preferably, the bone fracture plate is divided into a bearing plate and two fixing plates, the bearing plate is fixed between the two fixing plates, screw holes are formed in the fixing plates, bone fracture screws are movably connected in the screw holes, the porous body is fixedly connected with the bearing plate, and the third through holes are arranged in parallel with the bearing plate.
Preferably, the bearing plate and the two fixing plates form a structure of a Chinese character 'ji'.
Preferably, a reinforcing rib is fixedly arranged in the middle of the bone plate.
Preferably, the aperture of the third through hole is larger than that of the first through hole, and the aperture of the first through hole is larger than that of the second through hole.
Preferably, the aperture of the first through hole is 700-1200um, the aperture of the second through hole is 200-700 μm, and the aperture of the transition region between the first through hole and the second through hole is in gradient change.
Preferably, the cross-sectional diameter of the porous body is smaller than the cross-sectional diameter of the host bone.
Preferably, the mandible defect prosthesis is integrally manufactured in a metal 3D printing mode.
Preferably, the metal raw material for metal 3D printing is titanium alloy or tantalum metal.
The utility model provides a defective prosthesis of mandible. The method has the following beneficial effects: the prosthesis is fixed on the host bone by arranging the bone fracture plate and implanting bone screws through screw holes on the bone fracture plate; so as to realize the functions of initial fixation and long-term bearing; the pore size of the second through hole in the porous body area which is in contact with the host bone is set to be 200-700 mu m, so that the bone ingrowth is suitable for occlusion reconstruction; the aperture size of the first through hole in the porous body area of the soft tissue contact surface is 700-1200um, so that the soft tissue is suitable for growing in to prevent the prosthesis from being exposed; and the device is integrally manufactured by adopting a metal 3D printing mode, the manufacturing period is short, and the mechanical property is excellent.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the bone plate of the present invention;
FIG. 3 is a schematic cross-sectional view of the porous body of the present invention;
FIG. 4 is a schematic view of the present invention in use;
the reference numbers in the figures illustrate:
1. a porous body; 2. a first region; 3. a second region; 4. a first through hole; 5. a second through hole; 6. a third through hole; 7. a bone plate; 8. a screw hole; 9. reinforcing ribs; 10. a bearing plate; 11. a fixing plate; 12. host bone.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.
In the first embodiment, as shown in fig. 1 to 4, the prosthesis for repairing a defective mandible includes a porous body 1, the porous body 1 is divided into a first area 2 and a second area 3, and as shown in a cross-sectional view of the porous body 1 of fig. 3, the first area 2 covers the outside of the second area 3, a plurality of first through holes 4 are formed in the first area 2, a plurality of second through holes 5 are formed in the second area 3, a third through hole 6 is formed in the middle of the porous body 1, and the third through hole 6 penetrates through the porous body 1; the bone fracture plate is characterized by further comprising a bone fracture plate 7, wherein the bone fracture plate 7 is divided into a bearing plate 10 and two fixing plates 11, the bearing plate 10 is fixed between the two fixing plates 11, screw holes 8 are formed in the fixing plates 11, bone fracture screws are movably connected in the screw holes 8, the porous body 1 is fixedly connected with the bearing plate 10, and the third through holes 6 are arranged in parallel with the bearing plate 10.
When in use, bone screws are implanted into the screw holes 8 on the fixing plate 11, the device is fixed on host bones 12 of a host under the action of the bone screws, so that the short-term fixing effect is realized, and the porous body 1 is fixed on the bearing plate 10, so that the bone fracture plate 7 has the long-term bearing effect; the first through holes 4 on the outer surface of the porous body 1 are in contact with soft tissues so as to be beneficial to the ingrowth of the soft tissues and prevent the exposure of the prosthesis, and the second through holes 5 in the porous body 1 are in contact with host bones so as to be convenient for the ingrowth of the bones, so that the occlusal reconstruction is realized; and the third through hole 6 is used to pass through a nerve or vascular bundle.
In the second embodiment, based on a further improvement of the first embodiment, the bearing plate 10 and the two fixing plates 11 form a structure in a shape of a Chinese character 'ji'; the middle of the bone fracture plate 7 is fixedly provided with a reinforcing rib 9. Compared with the prior art that a straight-line structure is adopted, the bone fracture plate 7 is convenient for fixing the porous body 1 to achieve the effect of bearing for a long time, and can prevent the problem that peripheral bones are long and incomplete due to abrasion when the bones grow in; and a reinforcing rib 9 is arranged in the middle of the bone fracture plate 7, thereby achieving the effect of reinforcing and fixing.
In a third embodiment, based on a further improvement of the first embodiment, the aperture of the third through hole 6 is larger than the aperture of the first through hole 4, and the aperture of the first through hole 4 is larger than the aperture of the second through hole 5. The aperture of the first through hole 4 is 700-1200 μm, the aperture of the second through hole 5 is 200-700 μm, and the aperture of the transition region between the first through hole 4 and the second through hole 5 is changed in a gradient manner. The aperture is suitable for soft tissue ingrowth in the range of 700-1200um, and the prosthesis is prevented from being exposed; the aperture is suitable for bone ingrowth in the range of 200-700um so as to be beneficial to occlusion reconstruction; and the aperture of the transition area between the first through hole 4 and the second through hole 5 is changed in a gradient manner, so that the combination between soft tissue and bone cells is facilitated.
Example four, based on a further improvement of example one, the cross-sectional diameter of the porous body 1 was set to 90% of the cross-sectional diameter of the host bone 12, so as to facilitate the growth of bone cells in the outermost layer of the porous body 1
In the fourth embodiment, based on the further improvement of the first embodiment, the mandible defect prosthesis is integrally manufactured in a metal 3D printing mode, and the metal raw material used for the metal 3D printing is titanium alloy or tantalum metal. Thereby not only facilitating the preparation of the device, but also being capable of making adaptive adjustment according to clinical conditions.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The mandible defect prosthesis is characterized in that: the novel porous body is characterized by comprising a porous body (1), wherein the porous body (1) is divided into a first area (2) and a second area (3), the first area (2) is located on the periphery of the second area (3), a plurality of first through holes (4) are formed in the first area (2), a plurality of second through holes (5) are formed in the second area (3), a third through hole (6) is formed in the middle of the porous body (1), and the third through hole (6) penetrates through the porous body (1).
2. The mandibular defect prosthesis of claim 1, wherein: still include coaptation board (7), coaptation board (7) comprise a bearing plate (10) and two fixed plates (11), bearing plate (10) are fixed between two fixed plates (11), screw (8) have been seted up on fixed plate (11), porous body (1) and bearing plate (10) fixed connection, third through-hole (6) and bearing plate (10) parallel arrangement.
3. The mandibular defect prosthesis of claim 2, wherein: the bearing plate (10) and the two fixing plates (11) form a structure shaped like a Chinese character 'ji'.
4. The mandibular defect prosthesis of claim 2, wherein: and a reinforcing rib (9) is fixedly arranged in the middle of the bone fracture plate (7).
5. The mandibular defect prosthesis of claim 1, wherein: the aperture of the third through hole (6) is larger than that of the first through hole (4), and the aperture of the first through hole (4) is larger than that of the second through hole (5).
6. The mandibular defect prosthesis of claim 1, wherein: the aperture of first through-hole (4) is 700-1200um, the aperture of second through-hole (5) is 200-700 mu m, the aperture of the transition region between first through-hole (4) and second through-hole (5) is gradient change.
7. The mandibular defect prosthesis of claim 1, wherein: the cross-sectional diameter of the porous body (1) is smaller than the cross-sectional diameter of the host bone (12).
8. The mandibular defect prosthesis of claim 1, wherein: the mandible defect restoration body is integrally manufactured in a metal 3D printing mode.
9. The mandibular defect prosthesis of claim 8, wherein: the metal raw material for metal 3D printing is titanium alloy or tantalum metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963280.4U CN210644250U (en) | 2019-06-25 | 2019-06-25 | Mandible defect prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963280.4U CN210644250U (en) | 2019-06-25 | 2019-06-25 | Mandible defect prosthesis |
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| Publication Number | Publication Date |
|---|---|
| CN210644250U true CN210644250U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920963280.4U Active CN210644250U (en) | 2019-06-25 | 2019-06-25 | Mandible defect prosthesis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200726A (en) * | 2019-06-25 | 2019-09-06 | 上海交通大学医学院附属第九人民医院 | Mandibular defect dummy |
| WO2022036900A1 (en) * | 2020-08-21 | 2022-02-24 | 上海交通大学医学院附属第九人民医院 | Temporomandibular joint and mandible combined prosthesis |
-
2019
- 2019-06-25 CN CN201920963280.4U patent/CN210644250U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200726A (en) * | 2019-06-25 | 2019-09-06 | 上海交通大学医学院附属第九人民医院 | Mandibular defect dummy |
| WO2022036900A1 (en) * | 2020-08-21 | 2022-02-24 | 上海交通大学医学院附属第九人民医院 | Temporomandibular joint and mandible combined prosthesis |
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