CN215130942U - Fixing device for assisting oblique lateral intervertebral fusion - Google Patents
Fixing device for assisting oblique lateral intervertebral fusion Download PDFInfo
- Publication number
- CN215130942U CN215130942U CN202120899736.2U CN202120899736U CN215130942U CN 215130942 U CN215130942 U CN 215130942U CN 202120899736 U CN202120899736 U CN 202120899736U CN 215130942 U CN215130942 U CN 215130942U
- Authority
- CN
- China
- Prior art keywords
- locking
- steel plate
- locking screw
- screw hole
- fixing device
- 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.)
- Active
Links
Images
Landscapes
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model belongs to the technical field of medical instrument, a supplementary oblique outside intervertebral fusion's fixing device is related to. The fixing device comprises a locking steel plate; the locking steel plate is in an L-shaped steel plate structure, the tail end of the long edge of the locking steel plate is provided with 1 first locking screw hole, and the short edge of the locking steel plate is provided with 2 second locking screw holes; the locking mechanism also comprises 1 first locking screw matched with the first locking screw hole and 2 second locking screws matched with the second locking screw holes; the diameter of the first locking screw hole is larger than that of the second locking screw hole. The fixing device can effectively maintain intervertebral stability, promote intervertebral fusion and prevent the fusion cage from sinking.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, a supplementary oblique outside intervertebral fusion's fixing device is related to.
Background
The oblique lateral lumbar interbody fusion technology is a minimally invasive technology used for lumbar spinal stenosis, lumbar degenerative lateral bending and lumbar spondylolisthesis isosceles vertebra degenerative diseases; due to the combination of osteoporosis or osteopenia in most patients with degenerative lumbar diseases, it is often necessary to combine pedicle screw fixation to maintain lumbar stabilization and prevent subsidence of the cage. In the fixing mode, the body position and two operation incisions need to be changed in the operation, so that the anesthesia time is prolonged, and the soft tissue structure behind the lumbar vertebra is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a supplementary oblique outside interbody fusion's fixing device, effectively prevent sinking of oblique outside interbody fusion cage, maintain intervertebral stability, promote interbody fusion.
The utility model provides a technical problem as follows.
A fixing device for assisting oblique lateral intervertebral fusion comprises a locking steel plate; the locking steel plate is in an L-shaped steel plate structure, the tail end of the long edge of the locking steel plate is provided with 1 first locking screw hole, and the short edge of the locking steel plate is provided with 2 second locking screw holes; the locking device also comprises 1 first locking screw matched with the first locking screw hole and 2 second locking screws matched with the second locking screw holes; the diameter of the first locking screw hole is larger than that of the second locking screw hole. According to the technical scheme, after oblique lateral lumbar interbody fusion is completed, the locking steel plate is placed at the tail end of the fusion cage, the locking screws are implanted into the lumbar, the nail head penetrates through opposite cortex lycii, so that the steel plate is fixed, the effect similar to that of an external fixing frame is achieved, the locking steel plate and the locking screws are fixed into a whole, the locking screw loosening and screw withdrawing rate is reduced, interbody stability is effectively maintained, the fusion cage is prevented from sinking, interbody fusion is promoted, meanwhile, fixation can be completed in the same incision, and the installation is convenient; the locking device is of an L-shaped steel plate structure, the volume of the whole locking steel plate can be effectively reduced, and meanwhile, the stability of the whole locking steel plate can be ensured by using 3 locking screws in total; in addition, the diameter difference of two locking screw holes makes the overall arrangement of whole locking screw hole more reasonable, and reducible trompil is to the influence of locking steel sheet intensity.
Further, in the fixing device, the first locking screw and the second locking screw are both full-thread cortical bone screws; the screw thread at the tail of the locking screw is utilized, so that the locking screw can be locked with the locking steel plate more conveniently.
Furthermore, in the fixing device, the diameter of the second locking screw hole is 5.5 mm-6.5 mm; furthermore, the diameter of the first locking screw hole is 1-2 mm larger than that of the second locking screw hole.
Furthermore, in the fixing device, each corner of the locking steel plate is in arc transition; the corner of the whole locking steel plate is smoother, further injury to operators or patients is avoided, and the use process is more convenient.
Furthermore, in the fixing device, the plate surface of the locking steel plate is arc-shaped; can be better attached to the lumbar of a human body.
Further, in the fixing device, the thickness of the locking steel plate becomes thinner gradually towards the two ends in the length direction; thereby forming a structural state with thick middle and thin two sides and effectively avoiding stress concentration.
Furthermore, in the fixing device, two side walls in the middle of the locking steel plate are provided with grooves; the locking steel plate is convenient to hold during use.
Furthermore, in the fixing device, temporary fixing holes are formed in both ends of the locking steel plate in the length direction; for temporary fixing of the locking steel plate.
The utility model discloses supplementary oblique outside interbody fusion's fixing device's beneficial effect does:
(1) the fixation of the locking device can be completed in the same incision when the fusion cage is installed, the installation process is more convenient, the damage to the tissues behind the lumbar vertebra is effectively reduced, and the operation time is shortened;
(2) the locking device can play a role similar to an external fixing bracket, and can effectively reduce the incidence rate of complications such as screw loosening, screw withdrawing and the like, thereby effectively maintaining intervertebral stability, promoting intervertebral fusion and preventing the fusion cage from sinking;
(3) the shape of the locking steel plate is combined with the number and diameter difference of the locking screws, so that the volume of internal fixation can be reduced as much as possible on the premise of ensuring the strength and locking stability of the locking steel plate, and the stimulation of internal fixation objects to surrounding tissues is reduced.
Drawings
FIG. 1 is a perspective view of the device for assisting oblique lateral intervertebral fusion according to the present invention;
FIG. 2 is a perspective view of the locking steel plate of the present invention;
fig. 3 is a using state diagram of the fixing device for assisting oblique lateral intervertebral fusion of the present invention.
The codes in the figures are respectively: 1. locking the steel plate; 2-1, a first locking screw hole; 2-2, a second locking screw hole; 3-1, a first locking screw; 3-2, a second locking screw; 4. a groove; 5. a temporary fixing hole; 6. a fusion device; 7. the lumbar spine.
Detailed Description
As shown in fig. 1 and 2, a fixing device for assisting oblique lateral intervertebral fusion includes a locking steel plate 1; the locking steel plate 1 is of an L-shaped steel plate structure, each corner of the locking steel plate is in arc transition, the plate surface of the locking steel plate 1 is arc-shaped, and the thickness of the locking steel plate is gradually reduced towards two ends in the length direction, so that a cambered plate structure with a thick middle part and thin two ends is formed; the tail end of the long side of the locking steel plate 1 is provided with 1 first locking screw hole 2-1, the short side is provided with 2 second locking screw holes 2-2, and the 3 locking screw holes are also shaped like an L; the diameter of the first locking screw hole 2-1 is larger than that of the second locking screw hole 2-2, specifically, the diameter of the second locking screw hole 2-2 is 6mm, and the diameter of the first locking screw hole 2-1 is 7.5 mm; in addition, all set up the recess 4 of being convenient for to grab on two lateral walls at locking steel sheet 1 middle part, locking steel sheet 1's length direction's both ends have all seted up interim fixed orifices 5.
The fixing device also comprises 1 first locking screw 3-1 matched with the first locking screw hole 2-1 and 2 second locking screws 3-2 matched with the second locking screw holes 2-2, namely, the first locking screw 3-1 is assembled in the first locking screw hole 2-1, and the second locking screw 3-2 is assembled in the second locking screw hole 2-2; in addition, the first locking screw 3-1 and the second locking screw 3-2 are all full-thread cortical screws.
As shown in fig. 3, the fixing device for assisting oblique lateral intervertebral fusion of the present invention is used by placing an L-shaped locking steel plate 1 in an inverted L-shape, so that the upper end thereof is 2 second locking screw holes 2-2 and the lower end thereof is 1 first locking screw hole 2-1; after oblique outside lumbar vertebrae fuses, place locking steel sheet 1 in the tail end of fusion cage 6 and make it span the lumbar vertebrae clearance, pass the interim fixed orifices 5 at locking steel sheet 1 both ends with the fixed pin and thus fix locking steel sheet 1 temporarily, all implant lumbar vertebrae 7 with 2 second locking screws 3-2 and 1 first locking screw 3-1 according to the direction that is on a parallel with the end plate, the pin fin passes contralateral cortex of bone, and then will lock locking steel sheet 1, then pull out the fixed pin, reach prevention fusion cage 6 and sink, maintain intervertebral stability, promote the mesh that interbody fused.
Claims (9)
1. A fixing device for assisting oblique lateral intervertebral fusion is characterized by comprising a locking steel plate (1); the locking steel plate (1) is an L-shaped steel plate, the tail end of the long side of the locking steel plate is provided with 1 first locking screw hole (2-1), and the short side of the locking steel plate is provided with 2 second locking screw holes (2-2);
the locking device also comprises 1 first locking screw (3-1) matched with the first locking screw hole (2-1) and 2 second locking screws (3-2) matched with the second locking screw holes (2-2);
the diameter of the first locking screw hole (2-1) is larger than that of the second locking screw hole (2-2).
2. The fixation device according to claim 1, wherein the first locking screw (3-1) and the second locking screw (3-2) are all-threaded cortical screws.
3. The fixture according to claim 1, wherein the diameter of the second locking screw hole (2-2) is 5.5mm to 6.5 mm.
4. The fixture according to claim 3, wherein the diameter of the first locking screw hole (2-1) is 1mm to 2mm larger than the diameter of the second locking screw hole (2-2).
5. A fixture according to claim 1, characterised in that the locking plate (1) has rounded transitions at each corner.
6. The fastening device according to claim 1, wherein the plate surface of the locking steel plate (1) is curved.
7. The fixing device according to claim 1, wherein the thickness of the locking steel plate (1) is gradually reduced toward both ends in the length direction.
8. The fixing device according to claim 1, characterized in that the locking plate (1) is provided with recesses (4) in both side walls in the middle.
9. The fixing device according to claim 1, wherein the locking steel plate (1) is provided with temporary fixing holes (5) at both ends in the length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120899736.2U CN215130942U (en) | 2021-04-28 | 2021-04-28 | Fixing device for assisting oblique lateral intervertebral fusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120899736.2U CN215130942U (en) | 2021-04-28 | 2021-04-28 | Fixing device for assisting oblique lateral intervertebral fusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215130942U true CN215130942U (en) | 2021-12-14 |
Family
ID=79364530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120899736.2U Active CN215130942U (en) | 2021-04-28 | 2021-04-28 | Fixing device for assisting oblique lateral intervertebral fusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215130942U (en) |
-
2021
- 2021-04-28 CN CN202120899736.2U patent/CN215130942U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7524323B2 (en) | Subcutaneous support | |
| AU2004208819B2 (en) | Midline occipital vertebral fixation system | |
| US6635087B2 (en) | Laminoplasty implants and methods of use | |
| US6712852B1 (en) | Laminoplasty cage | |
| US8845737B2 (en) | Interbody spinal implants with extravertebral support plates | |
| US8043341B2 (en) | Spinal fixation support device and methods of using | |
| US6843790B2 (en) | Anatomic posterior lumbar plate | |
| US5496321A (en) | Rod anchor seat having a sliding interlocking rod connector | |
| AU2004233785B2 (en) | Non-metallic orthopedic plate | |
| US7618418B2 (en) | Plate system for minimally invasive support of the spine | |
| US7468069B2 (en) | Static anterior cervical plate | |
| MX2011008822A (en) | Pediatric long bone support or fixation plate. | |
| KR20010071897A (en) | Bone fixation system | |
| US10813670B2 (en) | Spinal stabilization system | |
| US20120022598A1 (en) | Spinal fixation system | |
| US9839449B2 (en) | Translational plate and compressor instrument | |
| CN213249614U (en) | Vertebral body lifting device for anterior cervical ACAF operation | |
| CN215130942U (en) | Fixing device for assisting oblique lateral intervertebral fusion | |
| CN111248989A (en) | Femoral neck fracture fixing device | |
| US20160022324A1 (en) | Interspinous fusion implant | |
| CN212326542U (en) | Femoral neck fracture fixing device | |
| CN100349552C (en) | Front self locking fixing pin plate for lumbar vertebra | |
| CN208573808U (en) | A kind of titanium plate for laminoplasty | |
| CN203677227U (en) | Sliding and fixing system for cervical pedicle screws | |
| CN219109856U (en) | Door-opening side fusion plate and fusion plate nailing rod system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |