CN210990663U - Novel steel plate screw internal fixation device for sacroiliac joint - Google Patents
Novel steel plate screw internal fixation device for sacroiliac joint Download PDFInfo
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- CN210990663U CN210990663U CN201921078546.3U CN201921078546U CN210990663U CN 210990663 U CN210990663 U CN 210990663U CN 201921078546 U CN201921078546 U CN 201921078546U CN 210990663 U CN210990663 U CN 210990663U
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- sacral
- screw hole
- steel plate
- sacrum
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Abstract
The utility model discloses a novel steel plate screw internal fixation device for sacroiliac joints, which relates to the field of medical instruments, and comprises a sacroiliac outer steel plate and a hollow locking screw, wherein a sacrum 1 screw hole is arranged at the corresponding position of the upper end of the sacroiliac fixed steel plate and a sacrum 1 vertebral body; a sacrum 2 screw hole is formed at the lower end of the sacrum iliac fixing steel plate and the position corresponding to the sacrum 2 vertebral body; the opening directions of the sacrum 1 screw hole and the sacrum 2 screw hole are distributed in a non-parallel way at a certain angle; one or more of the sacral 1 screw hole and the sacral 2 screw hole are provided. The utility model discloses internal fixation device can realize that the steel sheet combines with the screw locking, and the original simple fix with screw of relative ratio can obviously increase the internal fixation and control the power, improves its anti-rotation, anti-shear capacity, maintains fixed stability.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to a novel steel sheet screw internal fixation device for sacroiliac joint.
Background
The pelvis is an annular structure consisting of an anterior and a posterior ring, which provide 30% and 70% stability, respectively, and the sacroiliac joint is an important component of the posterior pelvic ring, and its separation beyond 0.5cm affects the stability of the pelvic ring. With the rapid development of transportation and domestic industries, the incidence of sacroiliac joint dislocation tends to increase year by year. Conservative treatment is traditionally used, but the method has a high probability of complications and sequelae, and may also lead to disability of the patient if serious. The treatment effect of the internal fixation operation of the incision reduction is obvious, and the clinical consensus is achieved. Commonly used internal fixation methods include posterior sacral rod fixation, anterior sacroiliac steel plate internal fixation, posterior sacroiliac screw internal fixation, and posterior tension band bone-plate attachment. But they all have different degrees of limitations, which affect the wide clinical application.
Clinical practice proves that: the sacroiliac screw has the advantages of small traumatic property, quick recovery, remarkable effect and the like, is a very effective method for treating sacroiliac joint injury, and has good clinical medical prospect, but because the method has the probability of non-ideal position of the screw, the risk of damaging structures such as iliac vessels, lumbar iliac trunk, vertebral canal and the like can exist, and thus serious complications are caused. In addition, for the elderly with the sacroiliac joint dislocation, the problems of osteoporosis, weak bone holding force and the like generally exist, and the phenomena of screw withdrawing, cutting, falling off and the like after fixation are easily caused. In recent years, some clinicians have begun to develop sacroiliac joint screws through the sacrum 2 after recognizing many of the problems of the conventional sacroiliac joint implantation through the sacrum 1, but these two screws are only isolated and do not form an effective combination to enhance the effect of internal fixation, nor do they solve the problem of early rehabilitation exercises for patients going to the ground.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: aiming at the defects existing in the prior art, the novel steel plate screw internal fixation device for the sacroiliac joint is provided, the device can effectively improve the shear resistance and the rotation resistance of the screw, improves the fixation stability, and the phenomenon of withdrawing of the fixed screw is not easy to occur.
In order to solve the technical problem, the technical scheme of the utility model is that:
a novel steel plate screw internal fixation device for sacroiliac joints comprises a sacroiliac fixed steel plate and hollow locking screws, wherein a sacroiliac 1 screw hole is formed in the position, corresponding to a sacral 1 vertebral body, of the upper end of the sacroiliac fixed steel plate; a sacrum 2 screw hole is formed in the position, corresponding to a sacrum 2 vertebral body, of the lower end of the sacrum iliac fixation steel plate, and the opening directions of the sacrum 1 screw hole and the sacrum 2 screw hole are distributed in a certain angle and in a non-parallel mode; one or more of the sacral 1 screw hole and the sacral 2 screw hole are provided.
As an improved technical scheme, the sacroiliac fixed steel plate is in an anatomical form which is matched with the external side of the ilium.
As an improved technical scheme, the tail end of the hollow locking screw, the sacrum 1 screw hole and the sacrum 2 screw hole are correspondingly provided with threads.
As a preferable technical scheme, the sacroiliac fixed steel plate is a titanium sacroiliac fixed steel plate, and the hollow locking screws are titanium hollow locking screws.
As an improved solution, the diameter of the sacral 1 screw hole is greater than or equal to the diameter of the sacral 2 screw hole.
As a preferred solution, there are 3 sacral 1 screw holes; a first sacral 1 screw hole and a second sacral 1 screw hole on either side of the first sacral 1 screw hole, respectively; the number of the sacral 2 screw holes is 3; a first sacral 2 screw hole and a second sacral 2 screw hole on either side of the first sacral 2 screw hole.
As a further preferred solution, the diameter of the first sacral 1 screw hole is 4.5-6.5mm, and the diameter of the second sacral 1 screw hole is 3.5-4.5 mm; the first sacral 2 screw hole has a diameter of 3.5-4.5 mm; the second sacral 2 screw hole has a diameter of 2.5-3.5 mm; the length of the hollow locking screw is 25-90 mm; the diameter of the hollow locking screw is 2.5-6.5 mm.
As a preferred solution, the cannulated locking screws include a sacral 1 screw and a sacral 2 screw; the sacral 1 screw comprises a first sacral 1 screw and a second sacral 1 screw; the sacral 2 screw includes a first sacral 2 screw and a second sacral 2 screw.
As a further preferred solution, the first sacral 1 screw has a diameter of 4.5-6.5 mm; the second sacral 1 screw has a diameter of 3.5-4.5 mm; the first sacral 2 screw has a diameter of 3.5-4.5 mm; the second sacral 2 screw has a diameter of 2.5-3.5 mm.
Since the technical scheme is used, the beneficial effects of the utility model are that:
the novel steel plate screw internal fixation device for the sacroiliac joint comprises a sacroiliac fixed steel plate and a hollow locking screw, wherein a sacrum 1 screw hole is arranged at the position, corresponding to a sacrum 1 vertebral body, of the upper end of the sacroiliac fixed steel plate; a sacrum 2 screw hole is formed in the position, corresponding to a sacrum 2 vertebral body, of the lower end of the sacrum iliac fixation steel plate, and the opening directions of the sacrum 1 screw hole and the sacrum 2 screw hole are distributed in a certain angle and in a non-parallel mode; compared with the traditional sacroiliac joint dislocation treatment method adopting the sacroiliac screw internal fixation method, the sacroiliac joint dislocation treatment method has the advantages that only one sacroiliac 1 screw is implanted, or the sacroiliac 1 screw and the sacroiliac 2 screw are implanted respectively, but the two screws are isolated and fixed and cannot be combined with each other, so that the anti-shearing and anti-rotation functions of the internal fixation mode are not ideal, the patient still needs to lie in bed for a long time after the operation, and the recovery of the patient is not facilitated, the utility model adopts the combination of the screws and the fixed steel plate, the sacroiliac 1 screw hole and the sacroiliac 2 screw hole are fixed on the sacroiliac fixed steel plate by adopting the hollow locking screws, the strength of the internal fixation is effectively improved, the strong fixation of the sacroiliac joint can be realized, the secondary displacement and the internal fixation failure can be prevented, the time of the patient in bed can be shortened, and the early rehabilitation of the patient, can effectively treat diseases such as sacroiliac joint injury dislocation, sacrum fracture and the like. In addition, the opening directions of the sacrum 1 screw hole and the sacrum 2 screw hole are in non-parallel distribution at a certain angle, and the sacrum 1 screw and the sacrum 2 screw are implanted in a non-parallel way, so that angle fixation is realized, the holding force is increased, and the failure rate of internal fixation of osteoporosis patients is reduced.
The utility model provides a screw hole on the sacroiliac fixing steel plate is the pore of different diameters, can implant the screw of different quantity and diameter according to actual conditions, the operation of being convenient for.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the installation of the present invention for sacroiliac joint fixation;
in the figure, 1, the upper end; 2. a lower end; 3. a sacral 1 screw hole; 31. a first sacral 1 screw hole; 32. a second sacral 1 screw hole; 4. a sacral 2 screw hole; 41. a first sacral 2 screw hole; 42. a second sacral 2 screw hole; 5. a sacral 1 screw; 6. a sacral 2 screw; 7. an iliac plate; 8. the sacroiliac joint; 9. a sacral 1 vertebral body 10, a sacral 2 vertebral body; 11. the sacral ala.
Detailed Description
The invention is further explained below with reference to the drawings and examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
As shown in fig. 1 and fig. 2 together, the steel plate screw internal fixation device for the sacroiliac joint comprises a sacroiliac fixation steel plate and a hollow locking screw, wherein a sacroiliac fixation steel plate is provided with a sacrum 1 screw hole 3 at the upper end 1 corresponding to a sacrum 1 vertebral body 9; a sacrum 2 screw hole 4 is formed in the position, corresponding to the sacrum 2 vertebral body 10, of the lower end 2 of the sacrum iliac fixation steel plate, the opening directions of the sacrum 1 screw hole 3 and the sacrum 2 screw hole 4 are distributed in a certain angle and in a non-parallel mode, so that hollow locking screws implanted into the sacrum 1 vertebral body 9 and the sacrum 2 vertebral body 10 are distributed in an angle mode, angle fixation is effectively achieved, holding force is enhanced, and failure rate of internal fixation of osteoporosis patients is reduced; the sacral 1 screw hole 3 includes a first sacral 1 screw hole 31 and a second sacral 1 screw hole 32; the sacral 2 screw hole 4 includes a first sacral 2 screw hole 41 and a second sacral 2 screw hole 42.
The first sacral 1 screw hole 31 has a diameter of 4.5-6.5mm, and the second sacral 1 screw hole 32 has a diameter of 3.5-4.5 mm; the first sacral 2 screw hole 41 has a diameter of 3.5-4.5mm and the second sacral 2 screw hole 42 has a diameter of 2.5-3.5 mm. Wherein, a first sacrum 1 screw hole 31 and a first sacrum 2 screw hole 41 are respectively and correspondingly implanted with a first sacrum 1 screw with the diameter of 4.5-6.5mm and a first sacrum 2 screw with the diameter of 3.5-4.5mm, and a second sacrum 1 screw hole 32 and a second sacrum 2 screw hole 42 are respectively and selectively implanted with a second sacrum 1 screw with the diameter of 3.5-4.5mm and a second sacrum 2 screw with the diameter of 2.5-3.5mm for reinforcement and fixation. The internal fixing device can be implanted with screws with different numbers and diameters according to actual conditions, so that the operation is convenient.
The utility model provides an among the steel sheet screw internal fixation device for sacroiliac joint, sacr 1 screw hole with sacr 2 downthehole with hollow locking screw all is provided with corresponding screw thread, realizes that the locking combines, has both increased fixed strength, can reduce the screw again and withdraw from inefficacy scheduling problem. The hollow design of the hollow locking screw realizes that the hollow locking screw is accurately implanted to a part needing to be fixed under the guidance of the Kirschner wire so as to prevent the screw from penetrating out to cause secondary damage.
The utility model provides a fixed steel sheet of sacroiliac for fixing device adopts in steel sheet screw of sacroiliac joint is the dissection type, accords with the dissection appearance in the ilium rear portion outside, and the material is titanium material, can be attached completely with the ilium planking, reaches and strengthens fixed purpose to can reduce the implantation damage, thereby alleviate the uncomfortable sense of postoperative.
Example 1
The steel plate screw internal fixation device for the sacroiliac joint comprises a sacroiliac fixed steel plate and a hollow locking screw, wherein the sacroiliac fixed steel plate is a titanium ilium fixed steel plate; the hollow locking screw is a titanium hollow locking screw. A sacrum 1 screw hole 3 is arranged at the position, corresponding to a sacrum 1 vertebral body 9, of the upper end 1 of the sacrum iliac fixation steel plate; a sacrum 2 screw hole 4 is arranged at the position of the lower end 2 of the sacrum iliac fixation steel plate corresponding to the sacrum 2 vertebral body 10; the sacral 1 screw hole 3 includes a first sacral 1 screw hole 31 and a second sacral 1 screw hole 32; the first sacral 1 screw hole 31 has a diameter of 6mm, a cannulated locking screw having a diameter of 6mm is implanted; the second sacral 1 screw hole 32 has a diameter of 4.5 mm; implanting a hollow locking screw with the diameter of 4.5 mm; the sacral 2 screw hole 4 includes a first sacral 2 screw hole 41 and a second sacral 2 screw hole 42; the first sacral 2 screw hole 41 has a diameter of 4.5mm, a cannulated locking screw having a diameter of 4.5mm is implanted; the second sacral 2 screw hole 42 has a diameter of 3.5mm and a cannulated locking screw having a diameter of 3.5mm is implanted.
Example 2
The steel plate screw internal fixation device for the sacroiliac joint comprises a sacroiliac fixed steel plate and a hollow locking screw, wherein the sacroiliac fixed steel plate is a titanium ilium fixed steel plate; the hollow locking screw is a titanium hollow locking screw. A sacrum 1 screw hole 3 is arranged at the position, corresponding to a sacrum 1 vertebral body 9, of the upper end 1 of the sacrum iliac fixation steel plate; a sacrum 2 screw hole 4 is arranged at the position of the lower end 2 of the sacrum iliac fixation steel plate corresponding to the sacrum 2 vertebral body 10; the sacral 1 screw hole 3 includes a first sacral 1 screw hole 31 and a second sacral 1 screw hole 32; the first sacral 1 screw hole 31 has a diameter of 5.5mm, a cannulated locking screw having a diameter of 5.5mm is implanted; the second sacral 1 screw hole 32 has a diameter of 4mm, and a cannulated locking screw having a diameter of 4mm is implanted; the sacral 2 screw hole 4 includes a first sacral 2 screw hole 41 and a second sacral 2 screw hole 42; the first sacral 2 screw hole 41 has a diameter of 4mm, a cannulated locking screw having a diameter of 4mm is implanted; the second sacral 2 screw hole 42 has a diameter of 3mm and a cannulated locking screw having a diameter of 3mm is implanted.
As shown in fig. 2, when the sacroiliac joint fixing device is used for fixing the sacroiliac joint, under the guidance of a kirschner wire, a sacroiliac 1 screw 5 with a diameter of 6mm is driven into a first sacrum 1 screw hole 31 at the upper end 1 of a sacroiliac fixing steel plate and is screwed, and the sacrum 1 screw 5 enters a sacrum 1 vertebral body 9 through an iliac plate 7, a sacroiliac joint 8 and a sacrum 1 lateral mass in sequence; a sacral 1 screw 5 of appropriate length and 4.5mm diameter is selectively driven into the second sacral 1 screw hole 32, and the shorter screw is secured to the sacral ala 11 through the iliac plate 7, sacroiliac joint 8, in that order, in the case of the sacral 1 vertebral body 9 that does not allow simultaneous implantation of screws. Then under the guidance of a kirschner wire, a sacrum 2 screw 6 with the proper length and the diameter of 4.5mm is drilled into a first sacrum 2 screw hole 41 at the lower end 2 of the sacrum-iliac fixed steel plate and is screwed, and the sacrum 2 screw enters a sacrum 2 vertebral body 10 through an iliac plate 7, a sacrum-iliac joint 8 and a sacrum 1 lateral mass in sequence; a sacral 2 screw 6 of 3mm diameter is selectively driven into the second sacral 2 screw hole 42, and in the event that the sacral 2 vertebral body 10 does not allow simultaneous implantation of screws, the shorter screw passes through the iliac plate 7, the sacroiliac joint 8, in sequence, and is secured to the sacral ala 11.
Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Claims (9)
1. A novel steel plate screw internal fixation device for sacroiliac joints, which is characterized in that: the fixing device comprises a sacroiliac fixing steel plate and a hollow locking screw; the upper end of the sacroiliac fixing steel plate is provided with a sacrum 1 screw hole; the lower end of the sacroiliac fixing steel plate is provided with a sacral 2 screw hole, and the opening directions of the sacral 1 screw hole and the sacral 2 screw hole are distributed in a certain angle and in a non-parallel way; one or more of the sacral 1 screw hole and the sacral 2 screw hole are provided.
2. A novel steel plate screw internal fixation device for the sacroiliac joint as defined in claim 1 wherein: the sacroiliac fixed steel plate is in an anatomical form adapted to the outer side of the ilium.
3. A novel steel plate screw internal fixation device for the sacroiliac joint as defined in claim 1 wherein: threads are correspondingly arranged at the tail end of the hollow locking screw, in the sacrum 1 screw hole and in the sacrum 2 screw hole.
4. A novel steel plate screw internal fixation device for the sacroiliac joint as defined in claim 1 wherein: the sacroiliac fixed steel plate is a titanium sacroiliac fixed steel plate, and the hollow locking screws are titanium hollow locking screws.
5. A novel steel plate screw internal fixation device for the sacroiliac joint as defined in claim 1 wherein: the sacral 1 screw hole has a diameter greater than or equal to a diameter of the sacral 2 screw hole.
6. A novel steel plate screw internal fixation device for the sacroiliac joint as defined in claim 1 wherein: the number of the sacral 1 screw holes is 3, namely a first sacral 1 screw hole and second sacral 1 screw holes positioned on two sides of the first sacral 1 screw hole; there are 3 sacral 2 screw holes, a first sacral 2 screw hole and a second sacral 2 screw hole located on either side of the first sacral 2 screw hole.
7. A novel steel plate screw internal fixation device for the sacroiliac joint as defined in claim 6 wherein: the first sacral 1 screw hole has a diameter of 4.5-6.5mm, and the second sacral 1 screw hole has a diameter of 3.5-4.5 mm; the first sacral 2 screw hole has a diameter of 3.5-4.5 mm; the second sacral 2 screw hole has a diameter of 2.5-3.5 mm; the length of the hollow locking screw is 25-90 mm; the diameter of the hollow locking screw is 2.5-6.5 mm.
8. A novel steel plate screw internal fixation device for the sacroiliac joint as defined in claim 6 wherein: the cannulated locking screw comprises a sacral 1 screw and a sacral 2 screw; the first and second sacral 1 screws; the sacral 2 screw includes a first sacral 2 screw and a second sacral 2 screw.
9. A novel steel plate screw internal fixation device for the sacroiliac joint as defined in claim 8 wherein: the first sacral 1 screw has a diameter of 4.5-6.5 mm; the second sacral 1 screw has a diameter of 3.5-4.5 mm; the first sacral 2 screw has a diameter of 3.5-4.5 mm; the second sacral 2 screw has a diameter of 2.5-3.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078546.3U CN210990663U (en) | 2019-07-11 | 2019-07-11 | Novel steel plate screw internal fixation device for sacroiliac joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078546.3U CN210990663U (en) | 2019-07-11 | 2019-07-11 | Novel steel plate screw internal fixation device for sacroiliac joint |
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| Publication Number | Publication Date |
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| CN210990663U true CN210990663U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921078546.3U Expired - Fee Related CN210990663U (en) | 2019-07-11 | 2019-07-11 | Novel steel plate screw internal fixation device for sacroiliac joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2019
- 2019-07-11 CN CN201921078546.3U patent/CN210990663U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 Termination date: 20210711 |
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| CF01 | Termination of patent right due to non-payment of annual fee |