CN208799372U - A kind of four limbs large segmental bone defect titanium prosthesis of 3D printing - Google Patents
A kind of four limbs large segmental bone defect titanium prosthesis of 3D printing Download PDFInfo
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- CN208799372U CN208799372U CN201820534509.8U CN201820534509U CN208799372U CN 208799372 U CN208799372 U CN 208799372U CN 201820534509 U CN201820534509 U CN 201820534509U CN 208799372 U CN208799372 U CN 208799372U
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- bone defect
- prosthese
- distal end
- proximal
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Abstract
The utility model relates to a kind of four limbs large segmental bone defect titanium prosthesis of 3D printing, belong to orthopedic medical device technical field.It includes proximal end prosthese and distal end prosthese, and proximal end prosthese and distal end prosthese are cooperatively connected；The proximal end prosthese includes proximal medullary cavity end, proximal end bone defect end and boss；The proximal medullary cavity end is connect with proximal end bone defect end, and proximal end bone defect end is connect with boss；The distal end prosthese includes distal end pulp cavity end, distal end bone defect end and groove；Distal end pulp cavity end is connect with distal end bone defect end, and distal end bone defect end is connect with groove；The proximal end prosthese and distal end prosthese are cooperatively connected by boss and groove.The utility model has the advantages of convenient installation, and prosthese itself also has internal fixation device effect, does not need additional internal fixation device and is auxiliarily fixed, postoperative as joint replacement to bear a heavy burden；The utility model prosthese will not loosen, therefore prosthese long term fixed effect is also preferable.
Description
Technical field
The utility model relates to a kind of four limbs large segmental bone defect titanium prosthesis of 3D printing, can be assembled, can grow into poroma
Four limbs large segmental bone defect titanium prosthesis, belong to orthopedic medical device technical field.
Background technique
The bone defects of limbs clinic as caused by severe trauma, infection, tumour and deformity excision etc. is common, the bone greater than 2cm
Defect can not self-heal, need operative treatment, but bone healing time is usually longer, though as shin bone segment bone defect using swim
It is treated from bone grafting, healing is also required at least six month, and the healing of biggish bone defects of limbs is more difficult, serious shadow
Patient activity's function and life are rung, or even has amputation possible, therefore, the treatment of four limbs large segmental bone defect is still challenging class
Topic, because how defective existing treatment method is, such as: free bone grafting method is simple, but is suitable only for segment bone defect, is not suitable for big section
Bone defect；Fibular flap transplanting healing is very fast, is suitble to Long bone defect, but needs microsurgical technique, popularization more difficult, and fibula
It is relatively thin, there is refracture may in shin bone and femur bone defect healing；Ilizarov technology treatment, the support arm set time compared with
Long, the broken ends of fractured bone needs the second stage of bone grafting that could heal more, and support arm rehabilitation nursing is inconvenient, screw way loosening infection rate is higher；
Tissue engineering technique repairing bone defect still locates the experimental stage；Existing method postoperative can not recover immediately suffering limb movable function etc.
Defect.
Bone or bone defect are rebuild using CT three-dimensional reconstruction, 3D printing technique is recycled to print the bone of titanium alloy
Or bone defect prosthese has been shown in an example report recently, but existing titanium alloy bone and bone defect prosthese are a single defective bone knot
Structure itself does not have internal fixation device and acts on, is required to additional internal fixation device and is fixed on bone around；Furthermore Periprosthetic is not
See mesh bone grafting person, prosthese can not merge one with surrounding bone, and there are prosthese long term fixed loosen may.
Summary of the invention
The purpose of this utility model is to be to overcome above-mentioned shortcoming, and the four limbs large segmental bone defect titanium for providing 3D printing closes
Golden prosthese can be used for printing instant, four limbs large segmental bone defect prosthese that is composable, can growing into poroma.
The technical solution of the utility model, a kind of four limbs large segmental bone defect titanium prosthesis of 3D printing, including proximal end are false
Body and distal end prosthese, proximal end prosthese and distal end prosthese are cooperatively connected；
The proximal end prosthese includes proximal medullary cavity end, proximal end bone defect end and boss；The proximal medullary cavity end and proximal end bone
The connection of defect end, proximal end bone defect end is connect with boss；
The distal end prosthese includes distal end pulp cavity end, distal end bone defect end and groove；Distal end pulp cavity end and distal bone
The connection of defect end, distal end bone defect end is connect with groove；
The proximal end prosthese and distal end prosthese are cooperatively connected by boss and groove.
It further include chock；The circular hole of several longitudinal arrangements is respectively provided on the boss and groove, boss is connected with groove
It is fixedly connected afterwards by being inserted into the chock of circular hole.
The diameter at the proximal medullary cavity end is slightly gradually reduced from the junction with proximal end bone defect end；The distal end pulp cavity
The diameter at end is slightly gradually reduced from the junction with distal end bone defect end.
The surface at the proximal medullary cavity end and distal end pulp cavity end is equipped with the granular protrusion of pearl, and depressed area can be grown to the marrow
Scab, the granular protrusion of pearl and pulp cavity inner wall are in close contact.
Proximal end bone defect end and distal end bone defect end surfaces are mesh.
Bone grafting and new bone can be grown into the mesh, form new bone connection.
The proximal end prosthese and distal end prosthetic material are titanium alloy.
Bone defect and surrounding pulp cavity structure are rebuild by CT 3-D scanning and reconstruction technique, 3D printing technique is recycled to pass through
Medical titanium valve prints titanium alloy proximal end prosthese and distal end prosthese, and size and shape matches with bone defect and surrounding pulp cavity.
The utility model has the beneficial effects that the utility model has the advantages of convenient installation, prosthese itself also has internal fixation device effect, no
Additional internal fixation device is needed to be auxiliarily fixed, it is postoperative as joint replacement to bear a heavy burden；Junction has several circular holes may be selected,
Prosthesis length is adjustable；The pulp cavity end surfaces depressed area of prosthese can grow into poroma, the mesh of prosthese bone defect end surfaces and vacation
Body boss and groove junction gap, which are implanted into after cancellous bone, with skeletonization and to be formed new bone and connect, final prosthese and bone melt for
One, prosthese will not loosen, therefore prosthese long term fixed effect is also preferable.
Detailed description of the invention
Fig. 1 the utility model proximal end borrowed structure schematic diagram.
Fig. 2 the utility model distal end borrowed structure schematic diagram.
Fig. 3 the utility model prosthese mounting structure schematic diagram.
Description of symbols: 1, proximal end prosthese；1-1, proximal medullary cavity end；1-2, proximal end bone defect end；1-3, boss；2, remote
End prosthesis；2-1, distal end pulp cavity end；2-2, distal end bone defect end；2-3, groove；3, chock；4, circular hole.
Specific embodiment
As shown in Figs. 1-2, the four limbs large segmental bone defect titanium prosthesis of a kind of 3D printing, including proximal end prosthese 1 and distal end
Prosthese 2, proximal end prosthese 1 and distal end prosthese 2 are cooperatively connected；
The proximal end prosthese 1 includes proximal medullary cavity end 1-1, proximal end bone defect end 1-2 and boss 1-3；The proximal medullary cavity
End 1-1 is connect with proximal end bone defect end 1-2, and proximal end bone defect end 1-2 is connect with boss 1-3；
The distal end prosthese 2 includes distal end pulp cavity end 2-1, distal end bone defect end 2-2 and groove 2-3；The distal end pulp cavity
End 2-1 is connect with distal end bone defect end 2-2, and distal end bone defect end 2-2 is connect with groove 2-3；
The proximal end prosthese 1 and distal end prosthese 2 are cooperatively connected by boss 1-3 and groove 2-3.
It further include chock 3；The circular hole 4 of several longitudinal arrangements, boss 1-3 are respectively provided on the boss 1-3 and groove 2-3
It is fixedly connected after being connected with groove 2-3 by the chock 3 of insertion circular hole 4.
The diameter of the proximal medullary cavity end 1-1 is slightly gradually reduced from the junction with proximal end bone defect end 1-2；It is described remote
The diameter of pulp cavity end 2-1 is held slightly to be gradually reduced from the junction with distal end bone defect end 2-2.
The surface of the proximal medullary cavity end 1-1 and distal end pulp cavity end 2-1 is equipped with the granular protrusion of pearl, and depressed area can
Poroma is grown into, the granular protrusion of pearl and pulp cavity inner wall are in close contact.
Proximal end bone defect end 1-2 and the distal end bone defect end surface 2-2 are mesh.
Bone grafting and new bone can be grown into the mesh, form new bone connection.
The proximal end prosthese 1 and 2 material of distal end prosthese are titanium alloy.
Bone defect and surrounding pulp cavity structure are rebuild by CT 3-D scanning and reconstruction technique, 3D printing technique is recycled to pass through
Medical titanium valve prints titanium alloy proximal end prosthese 1 and distal end prosthese 2, and size and shape matches with bone defect and surrounding pulp cavity.
There are a boss 1-3 and groove 2-3 in the defect end corresponding section of proximal end prosthese 1 and distal end prosthese 2 respectively, boss 1-3 and
The circular hole 4 of longitudinal arrangement there are two the part groove 2-3 is each, boss 1-3 and groove 2-3 are inserted into circular hole 4 after combining with chock 3
The two is connected and constitutes complete bone defect prosthese, the circular hole 4 of two longitudinal arrangements can be selected according to concrete condition in art
In any one the two is connected with chock 3, the length of such prosthese is adjustable.
When utility model works, preoperative row CT scan checks suffering limb body bone, rebuilds bone defect and week according to CT scan
Pulp cavity structure is enclosed, then prints bone defect and surrounding pulp cavity prosthese using 3D printing technique and Titanium Powder.When operation first
All cancellous bones of pulp cavity are struck off placing pulp cavity position, the cancellous bone struck off retains for use, then examination installation prosthese, it is therefore an objective to
Check whether the limbs line of force is good and determines that prosthese places the position of pulp cavity.
It is specific as follows: first to scrape cancellous bone in pulp cavity and prepare the bone bed of prosthese merging, while the cancellous bone scraped being given over to
Bone grafting is used.The pulp cavity end of prosthese is freely placed in pulp cavity along pulp cavity direction, slight pressurization but should not cuttage it is tight, the marrow of two sides
Chamber end prosthesis need to pull or rotate after installing limbs could nearly end prosthesis 1 and distal end prosthese 2 boss 1-3 and groove 2-
3 parts are connected.At this time, it may be necessary to adjust prosthese position, limbs should not inside and outside, front-rear direction deflection, to restore the correct power of limbs
Line.Confirmation can make marks behind prosthese position on the bone of the bone defect broken ends of fractured bone, and then impactor is suppressed cuttage prosthese pulp cavity end and made
With pulp cavity be in close contact.Then, it to determine prosthesis length, restore length according to limbs and suitable circular hole 4 is selected to use 3, chock
Proximal end prosthese 1 and distal end prosthese 2 are connected to restore normal length.Finally, the spongiosa bone implant proximal end prosthese 1 that will be struck off
With in 2 surface mesh of distal end prosthese and prosthese boss and groove junction gap.Such as occurs broken ends of fractured bone cortex bone out-of-flatness in art
Or defect, it can be implanted into abundant cancellous bone in the prosthetic surface mesh of cortex bone defect, new bone can be formed in the future；If patient
For advanced age osteoporosis severe patient, marrow intraluminal prosthesis is inserted into more loose or postoperative easy loosening person, and bone-cement type vacation can be used
Body installation method uses bone cement, by the prosthese that is adhesively fixed of bone cement when prosthese is inserted into pulp cavity side.
Claims (8)
1. the four limbs large segmental bone defect titanium prosthesis of a kind of 3D printing, it is characterized in that: including proximal end prosthese (1) and distal end prosthese
(2), proximal end prosthese (1) and distal end prosthese (2) are cooperatively connected；
The proximal end prosthese (1) includes proximal medullary cavity end (1-1), proximal end bone defect end (1-2) and boss (1-3)；The proximal end
Pulp cavity end (1-1) is connect with proximal end bone defect end (1-2), and proximal end bone defect end (1-2) is connect with boss (1-3)；
The distal end prosthese (2) includes distal end pulp cavity end (2-1), distal end bone defect end (2-2) and groove (2-3)；The distal end
Pulp cavity end (2-1) is connect with distal end bone defect end (2-2), and distal end bone defect end (2-2) is connect with groove (2-3)；
The proximal end prosthese (1) and distal end prosthese (2) are cooperatively connected by boss (1-3) and groove (2-3).
2. the four limbs large segmental bone defect titanium prosthesis of 3D printing as described in claim 1, it is characterized in that: further including chock (3)；
The circular hole (4) of several longitudinal arrangements, boss (1-3) and groove (2-3) are respectively provided on the boss (1-3) and groove (2-3)
It is fixedly connected after connection by the chock (3) of insertion circular hole (4).
3. the four limbs large segmental bone defect titanium prosthesis of 3D printing as described in claim 1, it is characterized in that: the proximal medullary cavity end
The diameter of (1-1) is gradually reduced from the junction with proximal end bone defect end (1-2)；The diameter at distal end pulp cavity end (2-1) is certainly
It is gradually reduced with the junction at distal end bone defect end (2-2).
4. the four limbs large segmental bone defect titanium prosthesis of 3D printing as described in claim 1, it is characterized in that: the proximal medullary cavity end
The surface at (1-1) and distal end pulp cavity end (2-1) is equipped with the granular protrusion of pearl, and depressed area can grow into poroma, and pearl is granular
Protrusion and pulp cavity inner wall are in close contact.
5. the four limbs large segmental bone defect titanium prosthesis of 3D printing as described in claim 1, it is characterized in that: the proximal end bone defect
Holding the surface (1-2) and distal end bone defect end (2-2) is mesh.
6. the four limbs large segmental bone defect titanium prosthesis of 3D printing as claimed in claim 5, it is characterized in that: can in the mesh
Bone grafting and new bone is grown into, forms new bone connection.
7. the four limbs large segmental bone defect titanium prosthesis of 3D printing as described in claim 1, it is characterized in that: the proximal end prosthese
(1) and distal end prosthese (2) material is titanium alloy.
8. the four limbs large segmental bone defect titanium prosthesis of 3D printing as described in claim 1, it is characterized in that: passing through CT 3-D scanning
Bone defect and surrounding pulp cavity structure are rebuild with reconstruction technique, recycles 3D printing technique by medical titanium valve to print titanium alloy close
End prosthesis (1) and distal end prosthese (2), size and shape match with bone defect and surrounding pulp cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820534509.8U CN208799372U (en) | 2018-04-13 | 2018-04-13 | A kind of four limbs large segmental bone defect titanium prosthesis of 3D printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820534509.8U CN208799372U (en) | 2018-04-13 | 2018-04-13 | A kind of four limbs large segmental bone defect titanium prosthesis of 3D printing |
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| Publication Number | Publication Date |
|---|---|
| CN208799372U true CN208799372U (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820534509.8U Expired - Fee Related CN208799372U (en) | 2018-04-13 | 2018-04-13 | A kind of four limbs large segmental bone defect titanium prosthesis of 3D printing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108498209A (en) * | 2018-04-13 | 2018-09-07 | 无锡市第九人民医院 | 3D-printed four-limb large-section bone defect titanium alloy prosthesis |
-
2018
- 2018-04-13 CN CN201820534509.8U patent/CN208799372U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108498209A (en) * | 2018-04-13 | 2018-09-07 | 无锡市第九人民医院 | 3D-printed four-limb large-section bone defect titanium alloy prosthesis |
| CN108498209B (en) * | 2018-04-13 | 2023-12-08 | 无锡市第九人民医院 | 3D printed titanium alloy prosthesis for bone defects of large limbs |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190430 Termination date: 20200413 |