CN202821572U - Novel front arc anatomic locking plate of sacroiliac joint - Google Patents
Novel front arc anatomic locking plate of sacroiliac joint Download PDFInfo
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- CN202821572U CN202821572U CN 201220290837 CN201220290837U CN202821572U CN 202821572 U CN202821572 U CN 202821572U CN 201220290837 CN201220290837 CN 201220290837 CN 201220290837 U CN201220290837 U CN 201220290837U CN 202821572 U CN202821572 U CN 202821572U
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- sacroiliac joint
- lockplate
- locking plate
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Abstract
The utility model relates to a novel front arc anatomic locking plate of sacroiliac joint which comprises a locking plate body. The locking plate body is provided with a mounting hole. The locking plate body is fixed in the front of a sacroiliac joint. The locking plate body is arc-shaped and provided with a arc-shaped mounting groove. The locking plate is arc-shaped along the long side. The bolts of the locking plate have a total of eight with four in each side, and respectively screw into at certain angle. The novel front arc anatomic locking plate of sacroiliac joint is characterized in that: 1. The circular measure of the locking plate is designed by measuring the data of the sacroiliac joint, and the circular measure of the locking plate and the natural anatomic locking plate are going in the same direction, and the lock is easy to place. 2. The position of the bolts and the fixed angel can avoid the damages to important blood vessels and nerves and reduces the occur of the complications. 3. The fixation of a back ring of a single plate can realize the stability of a whole pelvis and avoids the surgery of the front and back ring at the same time, and reduces the operative wound and the complications.
Description
Technical field
This utility model relates to the sacroiliac joint fixing head, more particularly, relates to a kind of novel sacroiliac joint the place ahead arc and dissects lockplate.
Background technology
Along with Modern Traffic, development of construction, fracture of pelvis has become more common a kind of serious damage in the contingencies such as traffic accident, Falling Injury, landslide.The fracture of pelvis that the high-energy damage causes belongs to instability mode more, and Unstable Pelvic Fracture often relates to Sacroiliac joint injury.Clinical practice proves: the successful of operative treatment unstable fracture of pelvis is better than expectant treatment, is fixed with in early stage anatomical reduction is firm and is beneficial to patients ' recovery, can reduce mortality rate and complication.
The operation fixing means kind of sacroiliac fracture-dislocation is more at present, comprises sacrum rod, sacroiliac joint screw, external fixator and sacroiliac joint the place ahead reconstruction plate etc.But all there is certain shortcoming in these fixing meanss, can not well satisfy clinical utilization.
The sacrum rod internal fixation is simple, wound is little, but is only applicable to one-sided sacroiliac dislocation, require the bilateral ilium after ridge intact, and can not excessively pressurize, otherwise may damage sacral nerves; When serious Pelvic trauma, often follow rear soft tissue serious contusion in addition, carry out operation technique at this and easily cause soft tissue necrosis, increase infection chance.
The sacroiliac joint types screw fixation technique requires high, and the danger that is strayed into canalis spinalis damage cauda equina nerve is arranged.
External fixer can not effectively be avoided the displacement of vertical direction, and heavy, pinprick can cause infection etc.Be fixed on easy damaged L4, L5 and sacral nerves when putting screw within front road appears the sacroiliac joint reconstruction plate, the rumpbone side can only be fixed one piece of screw, and its anti-stress is poor.
Although the operation of sacroiliac joint anterior lateral cervical approach resets to the sacroiliac joint of dislocation easily, causes the vertical shear of sacroiliac fracture-dislocation very powerful, often need to aspect biomechanics, can provide the strong reliably mode of fixing rear ring.And fixing anti-stress is poor in the reconstruction plate of front road, can not be well fixing sacroiliac joint, the report of joint Redislocation is not rare, so usually need simultaneously fixedly annuloplasty surgery treatment before the pubic symphysis.And reconstruction plate and sacroiliac joint docile not, need bending, do not have reset response; Put the nail direction fully with experience in the art, can not avoid well nerve injury.Still do not have at present the place ahead sacroiliac joint fixing head, realize: by the reset sacroiliac joint of dislocation of steel plate, avoid injured nerve by the nail hole that direction is fixing, by fixing posterior ring pelvic, the stability of assurance pelvis avoids the Anterior and posterior ring of pelvics ring to perform the operation simultaneously.
Find in the experiment that the forepelvis structure accounts for 40% to the Stabilization of pelvis, the rear portion accounts for 60%.Sacroiliac joint is the stress visceral senses of carrying and the heavy burden of posterior ring pelvic, should recover to greatest extent its stable and seriality.
On the pelvis specimen that pubic symphysis separates with sacroiliac joint, adopt respectively sacrum rod, anterior plate and sacroiliac screw to fix to sacroiliac joint separately, found that its Stabilization reaches 70%～85% of normal pelvis structure.When sacrum rod and sacroiliac screw share, its constant intensity was increased to 90%; Therefore draw the independent fixing rear ring of unstable fracture of pelvis and can reach the therapeutic purposes conclusion.
To Vertical unstable pelvic fracture, fixing rear ring is fixing front ring simultaneously, and ring was fixed after then pelvic stabilization was higher than merely, can reach 65%～71% of complete pelvis.Owing to think that simple fixedly posterior ring pelvic is still unreliable, thus present most scholar think Unstable Pelvic Fracture need be simultaneously fixing Anterior and posterior ring of pelvics ring.But front and back ring internal fixation operation must increase operation wound and corresponding complication, increases patient's hospitalization cost.
Sacroiliac fracture-dislocation is the most unsettled fracture of pelvis, and is all unstable on vertical and horizontal direction, the treatment difficulty, and complication is many.Advocate at present positive open reduction internal fixation treatment, to reduce disability rate.On fixing, studies show that unstable fracture of pelvis fixing separately after ring can reach the therapeutic purposes conclusion, but a lot of scholar still thinks to encircle behind the present interior fixing simple fixedly sacroiliac joint and can not stablize well whole pelvis.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of reduction clinical complication is provided, and provides sacroiliac joint the place ahead arc of the docile and obedient and larger stability of better dissection to dissect lockplate.
The technical solution of the utility model is as follows:
A kind of novel sacroiliac joint the place ahead arc is dissected lockplate, comprises the lockplate body, is provided with fixing hole on the lockplate body, and the lockplate body is fixed on sacroiliac joint the place ahead; Described lockplate body is sector shape; The lockplate body is arch along long side direction.
As preferably, the back side of described lockplate body is provided with the locating slot parallel with long limit.Obtain the anatomical features of joint line before the sacroiliac joint by measurement data, it is substantially identical to set locating slot and joint line, reaches the effect of keeping anatomical position.
As preferably, described locating slot is arranged on the centre position at the back side of lockplate body.
As preferably, described lockplate body is take locating slot as the demarcation line, and two long limits bend to frontal.
As preferably, described fixing hole is distributed in the locating slot both sides.
As preferably, the fixing hole quantity of locating slot both sides is identical.
As preferably, the fixing hole of locating slot both sides respectively has four.
As preferably, the axis of described fixing hole is non-parallel layout.
As preferably, described locating slot extends to another minor face from a minor face.
As preferably, described fixing hole adopts the lock hole structure.
The beneficial effects of the utility model are as follows:
1, design the radian of lockplate according to the sacroiliac joint anatomical data of measuring, the radian of lockplate is consistent with the trend that sacroiliac joint is dissected radian naturally, and steel plate is easy to place;
2, the position of steel plate screw and angle are fixed, and fine avoiding damaged important neural blood vessel when putting screw, thus the generation of complication;
3, ring is fixing behind single steel plate can realize the stable fixing of whole pelvis, avoids the Anterior and posterior ring of pelvics ring to perform the operation simultaneously, reduces operation wound and corresponding complication.
Description of drawings
Fig. 1 is Facad structure sketch map of the present utility model;
Fig. 2 is structure sketch map of the present utility model;
Fig. 3 is axonometric chart of the present utility model;
Among the figure: the 1st, lockplate body, the 2nd, fixing hole, the 3rd, locating slot.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is further described in detail.
A kind of sacroiliac joint the place ahead arc is dissected lockplate, comprises this plate of lockplate 1, is provided with fixing hole 2 on this plate of lockplate 1, is fixed on sacroiliac joint the place ahead.
As shown in Figure 1, described this plate of lockplate 1 is sector shape, and this plate of lockplate 1 is arch along long side direction.Upper and lower limit all is called long limit in this utility model, the limit of both sides is called minor face.Described this plate of lockplate 1 is the structure of a similar annulus section from the projection in front.This plate of lockplate 1 is the arch bending, and four angles of lockplate are rounding.
Have the function of stable anatomical position in order to make sacroiliac joint described in the utility model the place ahead arc dissect lockplate, as shown in Figure 2, the back side of described lockplate body is provided with the locating slot 3 parallel with long limit.Described locating slot 3 extends to another minor face from a minor face.Described locating slot 3 obtains the anatomical features of joint line before the sacroiliac joint by measurement data, and it is substantially identical with joint line to set locating slot 3, reaches the effect of keeping anatomical position, so that lockplate described in the utility model and sacroiliac joint docile more.In the present embodiment, described locating slot 3 is arranged on the centre position at the back side of lockplate body.Because radian and the length of locating slot 3 draw by statistical data, when locating slot 3 was positioned at joint line, it is the safest that the both sides screw advances nail, realizes described positioning function.
From the angle of product volume production, the product of producing the various sizes be applicable to exist individual variation obviously is unfavorable for enterprise operation, and this goes for the individuality of different scope with regard to the product that requires a certain model.Because locating slot 3 is the grooves that one fixed width is arranged, groove face is equivalent to a contact surface, and the width of groove can be contained the angle of certain limit sacroiliac joint, thereby satisfies the individuality in this disparity range.Concrete model can be carried out statistical analysis according to the individual specimen to q.s, draws model corresponding to each scope.
As shown in Figure 3, in order to make lockplate and sacroiliac joint more docile and larger stability, described this plate of lockplate 1 is take locating slot 3 as the demarcation line, and two long limits bend to frontal.Because the thickness of locating slot is thin than the plate body, can finish small adjustment, makes it more to apply ointment or plaster.
Such as Fig. 1, Fig. 2, shown in Figure 3, in the present embodiment, described fixing hole 2 is distributed in locating slot 3 both sides.Fixing hole 2 quantity of locating slot 3 both sides are identical.The fixing hole 2 of locating slot 3 both sides respectively has four.
Described fixing hole 2 adopts the lock hole structure, and the axis of fixing hole 2 is non-parallel layout, and it is at an angle with steel plate that screw advances to follow closely direction.Because this plate of lockplate is nonplanar, and for fear of important neural blood vessel, the complications of the fixed installation of lockplate damage, therefore the angle of each fixing hole 2 is to determine according to the actual angle of the sacroiliac joint of sufferer, causes between the axis of fixing hole 2 as nonparallel.
The inventor with SCT scanning, and carries out three-dimensional reconstruction by the sacroiliac joint cadaver sample to sufficient amount, measures the sacroiliac joint radian, carries out the comparison between the various different specimens.In same specimen, measure the diameter of the bone may be elected to be the screw insertion point with electronic measuring device, position and direction make screw can effectively avoid the neural blood vessel vital tissue, gather data and the image of gained.Data are carried out statistical analysis, determine locking-typed structure described in the utility model according to gained anatomical research result.
Above-described embodiment only is that this utility model is described, and is not with the restriction of the present utility model of opposing.So long as according to technical spirit of the present utility model, to above-described embodiment change, modification etc. all will drop in the scope of claim of the present utility model.
Claims (10)
1. novel sacroiliac joint the place ahead arc is dissected lockplate, comprises the lockplate body, is provided with fixing hole on the lockplate body, it is characterized in that the lockplate body is fixed on sacroiliac joint the place ahead; Described lockplate body is sector shape; The lockplate body is arch along long side direction.
2. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 1 is characterized in that the back side of described lockplate body is provided with the locating slot parallel with long limit.
3. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 2 is characterized in that described locating slot is arranged on the centre position at the back side of lockplate body.
4. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 2 is characterized in that described lockplate body is take locating slot as the demarcation line, and two long limits bend to frontal.
5. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 2 is characterized in that described fixing hole is distributed in the locating slot both sides.
6. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 5 is characterized in that the fixing hole quantity of locating slot both sides is identical.
7. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 6 is characterized in that the fixing hole of locating slot both sides respectively has four.
8. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 5 is characterized in that the axis of described fixing hole is non-parallel layout.
9. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 2 is characterized in that described locating slot extends to another minor face from a minor face.
10. novel sacroiliac joint the place ahead arc dissection lockplate according to claim 2 is characterized in that described fixing hole adopts the lock hole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220290837 CN202821572U (en) | 2012-06-19 | 2012-06-19 | Novel front arc anatomic locking plate of sacroiliac joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220290837 CN202821572U (en) | 2012-06-19 | 2012-06-19 | Novel front arc anatomic locking plate of sacroiliac joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202821572U true CN202821572U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220290837 Expired - Fee Related CN202821572U (en) | 2012-06-19 | 2012-06-19 | Novel front arc anatomic locking plate of sacroiliac joint |
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| CN (1) | CN202821572U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767782A (en) * | 2014-01-17 | 2014-05-07 | 上海市第六人民医院 | Novel locking plate for sacroiliac joints |
| CN107582158A (en) * | 2017-09-11 | 2018-01-16 | 哈尔滨医科大学 | Anatomical form articulatio sacroiliaca locking steel plate |
| CN108309426A (en) * | 2018-01-30 | 2018-07-24 | 芜湖东旭威宇医疗器械科技有限公司 | A kind of arc lockplate |
| CN114081611A (en) * | 2021-10-27 | 2022-02-25 | 常熟市第二人民医院 | Aiming device for quickly implanting sacrum-penetrating sacroiliac joint fixing screw |
-
2012
- 2012-06-19 CN CN 201220290837 patent/CN202821572U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767782A (en) * | 2014-01-17 | 2014-05-07 | 上海市第六人民医院 | Novel locking plate for sacroiliac joints |
| CN107582158A (en) * | 2017-09-11 | 2018-01-16 | 哈尔滨医科大学 | Anatomical form articulatio sacroiliaca locking steel plate |
| CN108309426A (en) * | 2018-01-30 | 2018-07-24 | 芜湖东旭威宇医疗器械科技有限公司 | A kind of arc lockplate |
| CN114081611A (en) * | 2021-10-27 | 2022-02-25 | 常熟市第二人民医院 | Aiming device for quickly implanting sacrum-penetrating sacroiliac joint fixing screw |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20140619 |
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| EXPY | Termination of patent right or utility model |