CN219763508U - Pedicle screw auxiliary fixing gasket - Google Patents
Pedicle screw auxiliary fixing gasket Download PDFInfo
- Publication number
- CN219763508U CN219763508U CN202320649952.0U CN202320649952U CN219763508U CN 219763508 U CN219763508 U CN 219763508U CN 202320649952 U CN202320649952 U CN 202320649952U CN 219763508 U CN219763508 U CN 219763508U
- Authority
- CN
- China
- Prior art keywords
- hole
- pedicle screw
- spacer
- gasket
- sacrum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 claims abstract description 15
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims abstract description 3
- 125000006850 spacer group Chemical group 0.000 claims description 23
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 210000003141 lower extremity Anatomy 0.000 claims description 4
- 208000001132 Osteoporosis Diseases 0.000 abstract description 5
- 239000007943 implant Substances 0.000 abstract description 2
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 210000000115 thoracic cavity Anatomy 0.000 description 2
- 208000012659 Joint disease Diseases 0.000 description 1
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001009 osteoporotic effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model relates to the technical field of orthopedic implants, in particular to an auxiliary fixing gasket for pedicle screws, which comprises a gasket body and is characterized in that the gasket body is attached to the surface of the lower edge of an upper articular process of a first sacrum and is in a space-bending strip shape, the gasket body comprises a first hole for connecting the pedicle screws, a second hole for installing the bone screws, a bottom surface in contact with the surface of the lower edge of the upper articular process of the first sacrum and a top surface corresponding to the bottom surface, and the first hole and the second hole are respectively arranged at two ends of the gasket body along the length direction. The auxiliary fixing gasket for the pedicle screw can enhance the holding force of the pedicle screw on the osteoporosis sacrum, thereby improving the fixing strength of the pedicle screw and finally improving the success rate of the operation.
Description
Technical Field
The utility model relates to the technical field of orthopedic implants, in particular to an auxiliary fixing gasket for pedicle screws.
Background
The pedicle screw fixing system is a first-choice endophyte for fixing thoracic vertebrae and lumbar vertebrae clinically at present, and is widely applied to fracture reduction fixation, deformity correction and decompression fusion of thoracic vertebrae and lumbar vertebrae.
In the treatment of lumbosacral joint diseases, the patient needs to be operated, and the treatment is generally performed by adding a connecting rod to pedicle screws of a nail-rod internal fixation system. However, when the pedicle screw is implanted in the sacrum with osteoporosis in the prior art, the sacrum osteoporosis obviously reduces the holding force of the pedicle screw, and the pedicle screw is easily loosened to cause unstable fixation, so that the problem of operation failure occurs.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present utility model is to provide an auxiliary fixing spacer for pedicle screws, which can strengthen the fixation of pedicle screws, and strengthen the fixation strength of pedicle screws on osteoporotic sacrum, so as to improve the fault tolerance of surgery.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
the utility model provides a pedicle screw auxiliary fixation gasket, includes the gasket body, the gasket body is laminated with first sacral superior articular process lower limb surface mutually, is the rectangular shape of space bending, the gasket body includes a first hole of connecting pedicle screw, a second hole that is used for installing bone screw, and a bottom surface and a with the corresponding top surface of bottom surface that contacts with first sacral superior articular process lower limb surface, first hole with the second hole is located respectively the gasket body is along length direction's both ends.
Preferably, a plurality of teeth are provided on the bottom surface at intervals along the outer circumference of the second hole.
Preferably, the second hole is a universal locking hole.
Preferably, the first hole has a diameter D measured along the length of the gasket body L Is larger than the diameter D of the first hole measured along the direction perpendicular to the length direction of the gasket body Q 。
Preferably, the gasket further comprises a buckle gasket, the buckle gasket is divided into a head part and a tail part, the head part and the tail part are connected in an angle integrated manner, the head part is provided with a hook, an opening of the hook is arranged on one side of the head part and is close to the tail part, and a third hole for installing a bone screw is formed in the tail part.
Preferably, the third hole is a ball hole, and the ball hole is provided with a spherical opening on a side surface of the clasp pad away from the lower edge surface of the upper articular process of the first sacrum.
Preferably, the gasket body and the clasp pad are made of titanium alloy.
The auxiliary fixing gasket for the pedicle screw has the beneficial effects that:
1. according to the utility model, the pedicle screw is connected through the gasket, and the sacrum wing screw is additionally arranged around the pedicle screw, so that the pedicle screw, the pedicle screw and the sacrum wing screw form a whole, and the holding force of the pedicle screw on the osteoporosis sacrum is enhanced through the gasket to reconstruct and strengthen the bone cortex structure of the upper articular process and the lower articular process of the first sacrum, so that the fixing strength of the pedicle screw is improved; and simultaneously, the looseness generated when the pedicle screw and the sacrum wing screw are driven into the position of the lower edge area of the upper articular process of the first sacrum can be avoided. The sacrum wing screw refers to a phalangeal screw;
2. through add the buckle pad on the gasket body, this buckle pad hangs the connecting rod, and supplementary gasket and sacrum wing screw strengthen the holding power of pedicle screw jointly to further improve the fixed strength of pedicle screw, finally improve the operation success rate.
Drawings
FIG. 1 is a schematic perspective view of a gasket body of the present utility model;
FIG. 2 is a front view of the gasket body of the present utility model;
FIG. 3 is a schematic perspective view of a buckle pad of the present utility model;
FIG. 4 is a front view of the clasp of the present utility model;
FIG. 5 is a view showing the use of the spacer body of the pedicle screw auxiliary fixation spacer of the utility model;
FIG. 6 is a side partial view of FIG. 5;
FIG. 7 is a view showing the combined use of the gasket body and the grommet mat of the present utility model;
FIG. 8 is a side partial view of FIG. 7;
fig. 9 is a front view of a second bore of the gasket body of the present utility model.
In the figures, 1 first sacral vertebra, 10 spacer body, 11 first hole, 12 second hole, 13 bottom surface, 14 top surface, 15 lobe, 20 buckle pad, 21 head, 22 tail, 23 third hole, 24 spherical opening, 25 opening, 30 pedicle screw, 40 connecting rod, 50 sacral ala screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the pedicle screw auxiliary fixing spacer of the present utility model will be described in further detail by way of examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are illustrative only and are not intended to limit the utility model.
As shown in fig. 1-2 and fig. 5-6, the embodiment of the utility model discloses an auxiliary fixing spacer for pedicle screws, which comprises a spacer body 10, wherein the spacer body 10 is attached to the lower edge surface of the superior articular process of a first sacrum and takes the shape of a space curved strip, the spacer body 10 comprises a first hole 11 connected with the pedicle screw 30, a second hole 12 for installing a sacrum wing screw 50, a bottom surface 13 contacted with the lower edge surface of the superior articular process of the first sacrum and a top surface 14 corresponding to the bottom surface 13, and the first hole 11 and the second hole 12 are respectively arranged at two ends of the spacer body 10 along the length direction. The gasket body 10 is made of titanium alloy. Wherein the sacral ala screw 50 profile can be a locking screw or a ball screw.
As a preferred embodiment, as shown in fig. 1, a plurality of teeth are provided on the bottom surface 13 at intervals along the outer circumference of the second aperture 12, the provision of the teeth increasing the strength of the pad body 10 for attachment to the first sacral vertebra. In this embodiment, three teeth are provided.
As a preferred embodiment, as shown in fig. 9, the second hole 13 is a universal locking hole, and the universal locking hole can enable the sacral ala screw to be implanted into the first sacrum at any angle, so as to avoid interference with the pedicle screw; on the other hand, the screw has the function of a guide hole, and the accuracy of the installation of the sacrum wing screw can be improved.
As a preferred embodiment, as shown in fig. 2, the diameter D of the first hole 11 measured along the length of the gasket body 10 L Greater than the diameter D of the first hole 11 measured perpendicular to the length of the gasket body 10 Q . The first hole 11 is designed as a oblong hole, which can play a role in adjusting the position of the spacer body, and avoid the mutual interference of the pedicle screw and the sacral ala screw by adjusting the position of the spacer body.
As a preferred embodiment, as shown in fig. 3-4 and 7-8, in order to further enhance the holding force of the pedicle screw 30, the auxiliary fixing pad for pedicle screw further comprises a clasp pad 20, the clasp pad 20 is made of titanium alloy, the clasp pad 20 is divided into a head 21 and a tail 22, the head 21 and the tail 22 are integrally connected at an angle, the head 21 is provided as a hook, an opening 25 of the hook is provided at one side of the head 21 and near the tail 22, and a third hole for installing the sacrum wing screw 50 is provided on the tail 22. When in use, the head 21 of the clasp cushion 20 is hung on the connecting rod 40, the tail 22 simultaneously fixes the gasket body 10 and the clasp cushion 20 by the sacrum wing screw 50, one end of the clasp cushion 20 is hung on the connecting rod 40, the other end of the clasp cushion is connected with the sacrum wing screw 50, and the installed clasp cushion 20 can limit the movement of the connecting rod 40 away from the direction of the first sacrum 1, thereby limiting the movement of the pedicle screw 30 away from the direction of the first sacrum 1, and further improving the fixing strength of the pedicle screw 30.
As a preferred embodiment, the third aperture 23 is a ball-end aperture that defines a spherical opening 24 on a side of the buckle pad 20 remote from the inferior edge surface of the superior articular process of the first sacral vertebra. The ball head hole structure can improve the stability of the sacrum wing screw fixed on the sacrum.
As shown in fig. 5 to 8, the pedicle screw auxiliary fixing spacer of the utility model is used as follows:
firstly, respectively drilling pre-drilled holes of pedicle screws and sacrum wing screws in the lower edge area of the upper articular process of a first sacrum;
secondly, sleeving the gasket body 10 at the joint between the screw rod of the pedicle screw 30 and the screw seat, then installing the pedicle screw 30 and the connecting rod 40 on the vertebra and the first sacrum, and fixing the gasket body 10 by using the sacrum wing screw 50;
in a third step, to further enhance the holding force of the pedicle screw 30, the head of the buckle cushion 20 is hung on the connecting rod 40, and the third hole 23 of the tail 22 is aligned with the second hole 12 of the spacer body 10 and fixed with the sacral ala screw 50. This step can also be omitted when the pedicle screw holding force is sufficient.
The pad of the utility model can be applied to the sacral vertebrae with osteoporosis and normal bone.
In summary, the foregoing description is only of the preferred embodiments of the utility model, and is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a pedicle screw auxiliary fixation gasket, includes the gasket body, its characterized in that, the gasket body is laminated with first sacral upper articular process lower limb surface mutually, is the rectangular shape of space bending, the gasket body includes a first hole of connecting pedicle screw, a second hole that is used for installing bone screw, and a bottom surface and a with the corresponding top surface of bottom surface that contacts with first sacral upper articular process lower limb surface, first hole with the second hole is located respectively the gasket body is along length direction's both ends.
2. The pedicle screw auxiliary fixation spacer of claim 1, wherein a plurality of teeth are provided on the bottom surface at intervals along the periphery of the second hole.
3. The pedicle screw auxiliary fixation spacer of claim 1, wherein the second hole is a universal locking hole.
4. The pedicle screw auxiliary fixation spacer of claim 1, wherein the diameter DL of the first hole measured along the length of the spacer body is greater than the diameter DQ of the first hole measured perpendicular to the length of the spacer body.
5. The pedicle screw auxiliary fixation spacer of claim 1, further comprising a grommet mat, the grommet mat being divided into a head portion and a tail portion, the head portion and the tail portion being integrally connected at an angle, the head portion being provided as a hook, an opening of the hook being provided on one side of the head portion and adjacent to the tail portion, the tail portion being provided with a third hole for mounting a bone screw.
6. The pedicle screw auxiliary fixation spacer of claim 5, wherein the third hole is a ball hole provided as a spherical opening on a side of the grommet pad remote from the inferior edge surface of the superior articular process of the first sacrum.
7. The pedicle screw auxiliary fixation spacer of any of claims 5-6, wherein the spacer body and the clasp pad are of titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320649952.0U CN219763508U (en) | 2023-03-29 | 2023-03-29 | Pedicle screw auxiliary fixing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320649952.0U CN219763508U (en) | 2023-03-29 | 2023-03-29 | Pedicle screw auxiliary fixing gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219763508U true CN219763508U (en) | 2023-09-29 |
Family
ID=88103370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320649952.0U Active CN219763508U (en) | 2023-03-29 | 2023-03-29 | Pedicle screw auxiliary fixing gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219763508U (en) |
-
2023
- 2023-03-29 CN CN202320649952.0U patent/CN219763508U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |