CN207821952U - Artificial semi-pelvis prosthesis for rebuilding pelvis ilium and Periacetabular defect - Google Patents
Artificial semi-pelvis prosthesis for rebuilding pelvis ilium and Periacetabular defect Download PDFInfo
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- CN207821952U CN207821952U CN201720753857.XU CN201720753857U CN207821952U CN 207821952 U CN207821952 U CN 207821952U CN 201720753857 U CN201720753857 U CN 201720753857U CN 207821952 U CN207821952 U CN 207821952U
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- pelvis
- defect
- rumpbone
- rebuilding
- periacetabular
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Abstract
The utility model is related to a kind of for rebuilding pelvis ilium and the artificial semi-pelvis prosthesis of Periacetabular defect, which is characterized in that the artificial semi-pelvis prosthesis includes：Defect main body, defect main body are by rumpbone firm banking and to be integrally connected to the L-type structure that the adjustable double axle platform of rumpbone firm banking lower part forms；Twin shaft includes the sagittal plane self-locking rotary shaft for adjusting Acetabular abduction angle, and the horizontal plane self-locking rotary shaft for adjusting acetabulum angle from angle adjusting mechanism is locked from angle adjusting mechanism, twin shaft is locked；Metal acetabular cup, metal acetabular cup are integrally connected to the lower part of adjustable double axle platform.The bone defect that the utility model can be widely applied for pelvis continuity stage casing after pelvic tumor resection is rebuild, and no matter from recent structure is restored to patient's function and quality of life at a specified future date, can be significantly improved.
Description
Technical field
The utility model is related to a kind of artificial prosthesis, and in particular to one kind is for rebuilding pelvis ilium and Periacetabular defect
Artificial semi-pelvis prosthesis.
Background technology
Pelvis is the position that bone tumour is sent out well, and pelvic tumor can be divided into primary tumo(u)r and metastatic tumour.Primary tumo(u)r is main
For chondrosarcoma, osteosarcoma and Ewing sarcoma, metastatic carcinoma is common in the Bone tumour of mastocarcinoma, kidney, prostate cancer, lung cancer etc..
Pelvic tumor incidence of occult and early diagnose difficulty, it is very big to invade range when often finding, is answered plus pelvis surrounding anatomic
Miscellaneous and adjoin with many important organs, operating difficulty is big, and complication is more, and curative effect is not good enough, and the death rate is high.In the past to pelvic tumor master
It takes half pelvis to cut off or improve half pelvis excision amputation, occurs various pelvic tumor resection reconstruction operations later.Appoint
The excision of what pelvic tumor can cause bone defect, bone defect that can lead to trunk and lower limb continuity stage casing, influence to stand and bear
Overline is walked, and femoral head can be caused gradually to move up, and scoliosis can be led to after pelvic inclination, and with serious limbs etc.
It is long, make patient's postoperative life quality degradation.
As shown in Figure 1, pelvis is divided into following four region by functional area：The areas I (ilium), the region be mainly gluteus and
The attachment point of iliacus is the attachment point for controlling hip joint major muscles, the function of hip will be seriously affected after excision；The areas II (hip
Around mortar), which is joint portion, is the main positions that femoral head and acetabular bone constitute hip joint, even if retaining after excision fine
Power plant (muscle) will also seriously affect hip joint mobility；The areas III (pubis, ischium), the region are Pelvic floor attachments
Main portions, mainly ligamentum inguinale and maintain perineum tension Pelvic floor attachment point.The areas IV (around articulatio sacroiliaca), should
Region is mainly the stress conduction realized from trunk to pelvis, is amphiarthrosis.
In order to the integrality for regaining pelvic ring and functional hip joint, at present mainly using autologous bone+half
Pelvis prosthesis or the system combined assembly type semi-pelvis prosthesis of pedicle screw-rod are rebuild.But simple nail-stick system connection acetabular bone is remote
Phase will appear loosening and the fracture (due to metal fatigue) of peg stick, be difficult to realize biological fixation, and centrum screw may in addition
The excitation for causing lumbosacral trunk nerve causes postoperative nerve pain, and is adjusted by peg stick length and bending angle in art
Acetabular bone position and abduction, forward leaning angle adjustment difficulty.And Structural bone graft is difficult to realize bone due to lacking the stable environment of early stage
It heals (fusion of bone graft and defect pelvis).
Invention content
In view of the above-mentioned problems, the purpose of this utility model is to provide one kind for rebuilding pelvis ilium and Periacetabular defect
Artificial semi-pelvis prosthesis.
To achieve the above object, the utility model takes following technical scheme：One kind is for rebuilding pelvis ilium and acetabular bone
The artificial semi-pelvis prosthesis of surrounding defect, which is characterized in that the artificial semi-pelvis prosthesis includes：Defect main body, the defect master
Body is by rumpbone firm banking and to be integrally connected to the L-type knot that the adjustable double axle platform of rumpbone firm banking lower part forms
Structure；Twin shaft includes for adjusting Acetabular abduction angle from angle adjusting mechanism is locked from angle adjusting mechanism, the twin shaft is locked
The sagittal plane self-locking rotary shaft of degree, and the horizontal plane self-locking rotary shaft for adjusting acetabulum angle；Metal acetabular cup, institute
State the lower part that metal acetabular cup is integrally connected to the adjustable double axle platform.
In a preferred embodiment, multiple nail hole, sacrum bone fixation bottom are offered on the rumpbone firm banking
Seat realizes being mechanically fixed for the defect main body and rumpbone by the nail hole and cancellous bone screw.
In a preferred embodiment, the sagittal plane self-locking rotary shaft and horizontal plane self-locking rotary shaft include spiral shell
Bar, nut and zigzag gland；Wherein, the screw rod of the sagittal plane self-locking rotary shaft and horizontal plane self-locking rotary shaft is respectively along arrow
Shape face and horizontal plane are threadedly connected on the adjustable double axle platform, are sequentially connected the sawtooth on the screw rod from inside to outside
Shape gland and nut.
In a preferred embodiment, the metal acetabular cup is in spherical shell shape, several holes are provided on the metal acetabular cup
Hole.
In a preferred embodiment, the front of the rumpbone firm banking have soft tissue facies posterior hepatis, described soft group
It knits facies posterior hepatis to be made by electron beam dissolution method or stereolithography technology, pore diameter 1-2mm, porosity
60-65%.
In a preferred embodiment, the back side of the rumpbone firm banking protrudes from the defect main body with multiple
Short-tail cap, a through-hole for being put into metal bar is provided on the short-tail cap, and fix by nut, realized and spine nail stick
The connection of system.
The utility model has the following advantages due to taking above technical scheme：The utility model being capable of extensive use
After pelvic tumor resection pelvis continuity stage casing bone defect rebuild, no matter from recent structure be restored to patient's function at a specified future date and
Quality of life can be significantly improved.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and examples.It should be appreciated, however, that attached drawing carries
For only for more fully understanding the utility model, they should not be interpreted as limitations of the present invention.
As shown in Figure 1, artificial semi-pelvis prosthesis provided by the utility model includes defect main body 10, twin shaft from locking angle
Regulating mechanism and metal acetabular cup 30.Wherein, defect main body 10 is by rumpbone firm banking 11 and to be integrally connected to sacrum bone fixation bottom
The L-type structure that the adjustable double axle platform 12 of 11 lower parts of seat forms.Multiple nail hole 13, rumpbone are offered on rumpbone firm banking 11
Being mechanically fixed for defect main body 10 and rumpbone may be implemented by nail hole 13 and cancellous bone screw in firm banking 11, avoids use
Neuropathic pain caused by lumbar vertebra screw.Twin shaft includes for adjusting Acetabular abduction angle from angle adjusting mechanism is locked
Sagittal plane self-locking rotary shaft 21, and the horizontal plane self-locking rotary shaft 22 for adjusting acetabulum angle.Adjustable double vehicle
The portion integral connection metal acetabular cup 30 of shaft platform 12, which is the pedestal for supporting and fixing acetabular component.
In a preferred embodiment, sagittal plane self-locking rotary shaft 21 and horizontal plane self-locking rotary shaft 22 include screw rod
23, nut 24 and zigzag gland 25.Wherein, the screw rod 23 of sagittal plane self-locking rotary shaft 21 and horizontal plane self-locking rotary shaft 22 divides
It is not threadedly connected on adjustable double axle platform 12 along sagittal plane and horizontal plane, zigzag is sequentially connected from inside to outside on screw rod 23
Gland 25 and nut 24.When angular adjustment in place after, 24 locking and pressurizing zigzag gland 25 of nut can be used, prevent fixed angle loose
Dynamic variation.
In a preferred embodiment, metal acetabular cup 30 is in spherical shell shape, several holes are provided on metal acetabular cup 30, with
Convenient for carrying out the attachment of the soft tissues such as tendon in art.
In a preferred embodiment, the front of rumpbone firm banking 11 has soft tissue facies posterior hepatis, the soft tissue attached
It portion and passes through EBM (Electron Beam Melting, electron beam dissolution method) or SLA (Stereo Lithography
Apparatus, stereolithography) technology is made, pore diameter 1-2mm, porosity 60-65%, the porosity
Best soft tissue attachment interface can be provided, residual cavity can be reduced and formed, postoperative infection is reduced, improve long-term postoperative function.
In a preferred embodiment, the back side of rumpbone firm banking 11 has multiple short-tails for protruding from defect main body
Cap 14 is provided with a through-hole for being put into metal bar on short-tail cap 14, and can be fixed by nut, to realize and spine nail stick
The recovery of lumbosacral region stress conduction is realized in the connection of system.
The various embodiments described above are merely to illustrate the utility model, wherein the structure of each component, connection type and manufacture craft
Etc. may be changed, every equivalents carried out on the basis of technical solutions of the utility model and improvement,
It should not exclude except the scope of protection of the utility model.
Claims (6)
1. a kind of for rebuilding pelvis ilium and the artificial semi-pelvis prosthesis of Periacetabular defect, which is characterized in that this artificial half
Pelvis prosthesis includes：
Defect main body, the defect main body be by rumpbone firm banking and be integrally connected to rumpbone firm banking lower part can
Adjust the L-type structure of double axle platform compositions；
Twin shaft includes for adjusting Acetabular abduction angle from angle adjusting mechanism is locked from angle adjusting mechanism, the twin shaft is locked
The sagittal plane self-locking rotary shaft of degree, and the horizontal plane self-locking rotary shaft for adjusting acetabulum angle；
Metal acetabular cup, the metal acetabular cup are integrally connected to the lower part of the adjustable double axle platform.
2. as described in claim 1 for rebuilding pelvis ilium and the artificial semi-pelvis prosthesis of Periacetabular defect, feature
It is, multiple nail hole are offered on the rumpbone firm banking, and the rumpbone firm banking passes through the nail hole and spongiosa murices
Nail realizes being mechanically fixed for the defect main body and rumpbone.
3. as described in claim 1 for rebuilding pelvis ilium and the artificial semi-pelvis prosthesis of Periacetabular defect, feature
It is, the sagittal plane self-locking rotary shaft and horizontal plane self-locking rotary shaft include screw rod, nut and zigzag gland；Wherein,
The screw rod of the sagittal plane self-locking rotary shaft and horizontal plane self-locking rotary shaft is threadedly connected to institute along sagittal plane and horizontal plane respectively
It states on adjustable double axle platform, is sequentially connected the zigzag gland and nut on the screw rod from inside to outside.
4. as described in claim 1 for rebuilding pelvis ilium and the artificial semi-pelvis prosthesis of Periacetabular defect, feature
It is, the metal acetabular cup is in spherical shell shape, several holes are provided on the metal acetabular cup.
5. as described in claim 1 for rebuilding pelvis ilium and the artificial semi-pelvis prosthesis of Periacetabular defect, feature
It is, there is soft tissue facies posterior hepatis, the soft tissue facies posterior hepatis to be dissolved by electron beam in the front of the rumpbone firm banking
Method or stereolithography technology are made, pore diameter 1-2mm, porosity 60-65%.
6. as described in claim 1 for rebuilding pelvis ilium and the artificial semi-pelvis prosthesis of Periacetabular defect, feature
It is, the back side of the rumpbone firm banking has multiple short-tail caps for protruding from the defect main body, is opened on the short-tail cap
There is a through-hole for being put into metal bar, and fixed by nut, realizes the connection with pedicle screw fixation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720753857.XU CN207821952U (en) | 2017-06-26 | 2017-06-26 | Artificial semi-pelvis prosthesis for rebuilding pelvis ilium and Periacetabular defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720753857.XU CN207821952U (en) | 2017-06-26 | 2017-06-26 | Artificial semi-pelvis prosthesis for rebuilding pelvis ilium and Periacetabular defect |
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| CN207821952U true CN207821952U (en) | 2018-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107137162A (en) * | 2017-06-26 | 2017-09-08 | 北京大学人民医院 | A kind of artificial semi-pelvis prosthesis for being used to rebuild pelvis ilium and Periacetabular defect |
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2017
- 2017-06-26 CN CN201720753857.XU patent/CN207821952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107137162A (en) * | 2017-06-26 | 2017-09-08 | 北京大学人民医院 | A kind of artificial semi-pelvis prosthesis for being used to rebuild pelvis ilium and Periacetabular defect |
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