CN213525695U - Steel plate for lumbar lateral approach and fusion cage system - Google Patents
Steel plate for lumbar lateral approach and fusion cage system Download PDFInfo
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- CN213525695U CN213525695U CN202022614126.1U CN202022614126U CN213525695U CN 213525695 U CN213525695 U CN 213525695U CN 202022614126 U CN202022614126 U CN 202022614126U CN 213525695 U CN213525695 U CN 213525695U
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Abstract
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a steel sheet and fusion ware system that lumbar vertebrae side was gone into way is related to, including bone screw, steel sheet, fusion ware, locking wire, pressure nail and assembly nail, the pin fin of bone screw is the bulb form, and the pole body of this bone screw is provided with double-thread section, single thread section, and the cortical bone of centrum is implanted to the double-thread section correspondence, and the single thread section corresponds the cancellous bone of implanting the centrum and can improve the power of controlling of bone screw, and the doctor implants the centrum with the fusion ware in the operation between, correspondingly, the steel sheet is fixed through each bone screw and is rebuild centrum height and stability on adjacent centrum, and the fusion ware passes through the assembly nail and is connected with the steel sheet, is provided with the nail lid on the pressure nail and forms first end, the. The utility model discloses a steel sheet and fusion ware separable, the doctor can wholly use this system or exclusive use steel sheet.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a steel sheet and fusion ware system that lumbar vertebrae side was gone into way is related to.
Background
The traditional lumbar fusion operation can be divided into an anterior approach, a middle approach and a posterior approach, namely ALIF, XLIF, TLIF and PLIF, the traditional lumbar fusion operation has long operation time, much bleeding in the operation, more postoperative complications and long hospitalization time, and one of the most prominent defects is that extensive muscle stripping and long-time traction cause soft tissue injury. Pathological changes such as paraspinal muscle ischemia, contracture, nerve supply deficiency and the like cause postoperative lumbar strength weakening, chronic lumbago generation, prolonged recovery time and the like, and the postoperative recovery effect is greatly influenced.
The lumbar vertebra operation side approach, in particular to the OLIF operation of the side anterior approach, the side approach does not enter the peritoneal cavity, and the occurrence of complications such as abdominal organ injury, peritoneal adhesion, blood vessel injury and the like is reduced; the operation area is in front of the vertebral canal and does not enter the vertebral canal, thereby avoiding the interference to dura mater and nerves in the vertebral canal; the posterior structures such as the intervertebral facet joints, the spinous processes, the interspinous ligament, the posterior longitudinal ligament and the like are not damaged, the dorsal muscles of the waist are not stripped, the psoas major is not cut, the structures play an important role in maintaining the physiological and mechanical stability of the lumbar, and the reduction of postoperative muscle injury complications is facilitated; the incidence of complications of OLIF nerve injury is low: the larger interbody fusion cage can be used, so that the intervertebral space height and the coronal sagittal balance are effectively improved; short operation time, less bleeding, light pain, short hospitalization time and quick postoperative recovery.
Generally, after the lateral approach is implanted into the fusion device, a doctor needs to implant pedicle screws in a posterior approach way to ensure the stability of the vertebral body, and if one system is adopted, the doctor does not need to implant the pedicle screws additionally from the fixing system with the intervertebral fusion device and the stable vertebral body.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned problem that exists among the prior art, the utility model provides a steel sheet and fusion cage system that lumbar vertebrae side entered way, the doctor implants the centrum with the fusion cage that has the bone window of planting greatly in the operation, passes through the bone screw with the steel sheet that the fusion cage is connected and fixes on adjacent centrum, and is corresponding, and the bone screw pole body is provided with double-thread section, single thread section to correspond cortical bone, the cancellous bone of centrum respectively, stabilize and control.
The utility model relates to a technical problem is realized through following scheme:
the utility model provides a steel sheet and fusion cage system that lumbar vertebrae side entered way, its characterized in that contains bone screw, steel sheet, fusion cage, locking wire, pressure nail and assembly nail, the pin fin of bone screw is the bulb form, and the globular pin fin can make implantation angle set for according to patient actual conditions in the operation, gives the multiple choice of doctor, and the pole body of this bone screw is provided with double-thread section, single-thread section, double-thread section set up and be close to the position of bone screw pin fin, single-thread section sets up and is keeping away from the position of bone screw pin fin, and the blade has been seted up to this bone screw nail tail department, and cortical bone, cancellous bone of centrum are implanted respectively to its double-thread section, single-thread section in the operation.
Preferably, the steel sheet is the rectangle shape, and its center is opened there is the step hole, and steel sheet each angle department is provided with the ball nest hole, and this steel sheet all designs for not sharp state around four, just each side of steel sheet all is to the sunken setting in steel sheet center, and this design reduces occupation space, reduces to irritating of organizing on every side, the steel sheet is the arc, and it is protruding that its circumference medial surface is protruding to have a plurality of locator cards, the protruding restriction of locator card the mounted position of fusing the ware, still offer on the steel sheet and be used for the assembly the pressure nail hole of pressing the nail, the step form in screens control flume is offered for the entrance in this pressure nail hole, the outer camber side of steel sheet is close to the recess scope that can supply to press the nail action is still offered around the pressure nail hole.
Preferably, the outer arc surface side of the steel plate is provided with first clamping grooves at positions close to the stepped holes, the first clamping grooves are symmetrically arranged, and the side surface of the steel plate in the length direction and the positions corresponding to the first clamping grooves are provided with second clamping grooves which are also symmetrically arranged.
The doctor can use surgical instruments to utilize first draw-in groove or second draw-in groove on the steel sheet to stably hold and get this steel sheet in the operation.
Preferably, the assembly nail is integrally formed by a cylindrical part with an external thread and a nail head provided with a quincuncial groove, and the assembly nail is matched with the step hole in the steel plate.
Preferably, the pressing nail is composed of a nail cover and a cylindrical rod, crescent notches are formed in the opposite sides of the nail cover, a first end and a second end are formed between the crescent notches and can be used for locking adjacent bone screws respectively, a quincuncial groove is formed in the nail cover, a fixture block is arranged at the joint of the lower end of the nail cover and the cylindrical rod, the fixture block is in a right-angled triangle shape, and the right-angled end of the fixture block faces one end of the nail cover.
Preferably, the clamping control groove at the entrance of the nail pressing hole extends in an arc shape in the direction far away from the center of the steel plate, extends in the transverse direction and clamps the columnar locking screw.
Preferably, the locking wire is made of a nickel-titanium memory alloy wire which can be installed on the arc-shaped side of the clamping control groove and elastically acts.
Preferably, the fusion cage is integrally in a long rectangular block shape, the tail end of the fusion cage is provided with a connecting hole with internal threads, the fusion cage can be matched with the assembly nail to connect the fusion cage with the steel plate, and the fusion cage is made of PEEK or titanium alloy materials.
In order to realize the purpose of large-area bone grafting according to the operation characteristics of a lateral front approach of OLIF operation, holding and taking grooves are respectively arranged on the left side and the right side of the tail end of the rectangular long-strip-shaped fusion cage; the upper and lower lateral surfaces of the fusion cage are uniformly provided with triangular teeth which respectively correspond to the upper and lower end plates of a vertebral body, the fusion cage is provided with a large bone grafting window, a separation beam is arranged in the middle of the large bone grafting window, and a plurality of bone overflowing holes which are easy to overflow bone mud are arranged on the left and right sides of the fusion cage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a lumbar vertebrae side approach steel plate and fusion cage system according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a steel plate and a fusion cage system for lateral approach of lumbar vertebrae according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a side view of the other side of the steel plate of the lumbar vertebrae side approach and fusion cage system provided by the embodiment of the present invention;
fig. 4 is a schematic structural view of a bone screw of a lumbar lateral approach steel plate and fusion cage system according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a fitting nail of the lumbar lateral approach steel plate and fusion cage system provided by the embodiment of the present invention;
fig. 6 is a schematic view of a pressing nail structure of a lumbar vertebrae side approach steel plate and fusion cage system provided by the embodiment of the present invention;
fig. 7 is another side view of the pressing nail of the lumbar vertebrae side approach steel plate and fusion cage system provided by the embodiment of the present invention;
fig. 8 is a schematic structural view of a pressing nail and a locking wire of the steel plate and fusion cage system for lateral approach of lumbar vertebrae according to the embodiment of the present invention;
fig. 9 is a schematic structural view of a fusion cage of a lumbar lateral approach steel plate and fusion cage system according to an embodiment of the present invention;
fig. 10 is a schematic perspective partial structure view of a steel plate and a fusion cage system for a lumbar lateral approach according to an embodiment of the present invention;
fig. 11 is a schematic side view of the overall structure of a lumbar vertebrae side approach steel plate and fusion cage system according to an embodiment of the present invention;
fig. 12 is a schematic view of the overall structure of a two-nail type lumbar lateral approach steel plate and fusion cage system according to an embodiment of the present invention;
fig. 13 is a schematic structural view of a two-nail type lumbar vertebrae side approach steel plate and fusion cage system according to an embodiment of the present invention;
fig. 14 is a schematic view of a two-nail type pressing nail structure of a lumbar lateral approach steel plate and fusion cage system according to an embodiment of the present invention;
fig. 15 is another side view of the pressing nail of the two-nail type lumbar vertebrae side approach steel plate and fusion cage system according to the embodiment of the present invention;
fig. 16 is a schematic structural view of a cross section of a steel plate and a fusion cage system for lateral approach of lumbar vertebrae according to an embodiment of the present invention.
Icon: 1. a bone screw; 2. a steel plate; 3. a fusion device; 4. pressing nails; 5. assembling nails; 6. a double-threaded segment; 7. a single thread segment; 8. a stepped bore; 9. ball hole; 10. positioning the clamping protrusion; 11. pressing a nail hole; 12. a groove range; 13. a first card slot; 14. nailing a cover; 15. a first end; 16. a second end; 17. connecting holes; 18. a position clamping control groove; 19. a second card slot; 20. a clamping block; 21. and locking the wire.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
Example (b): please refer to fig. 1-16:
the first embodiment is as follows: the utility model provides a steel sheet and fusion system of lumbar vertebrae side approach, its characterized in that contains bone screw 1, steel sheet 2, fuses ware 3, locking wire 21, pressure nail 4 and assembly nail 5, the pin head of bone screw 1 is the bulb form, and the globular pin head can make implantation angle set for according to patient's actual conditions in the operation, gives the doctor multiple choice, and the pole body of this bone screw 1 is provided with double-thread section 6, single-thread section 7, double-thread section 6 set up in the position that is close to the pin head of bone screw 1, single-thread section 7 sets up in the position of keeping away from the pin head of bone screw 1, and this bone screw 1 nail tail department has seted up the blade, and its double-thread section 6, single-thread section 7 implant to cortical bone, cancellous bone of centrum respectively in the operation.
The utility model discloses a pressure nail, including steel sheet 2, steel sheet, setting up in the middle of the steel sheet 2, steel sheet each corner department is provided with ball nest hole 9, and this steel sheet 2 is all designed for not sharp state all around, just each side of steel sheet 2 all sets up to steel sheet 2 central subsides, and this design reduces the occupation space, reduces irritating to organize on every side, steel sheet 2 is the arc, and the protruding stretch of its circumference medial surface has the protruding 10 of a plurality of locator cards, the protruding 10 restriction of locator card the mounted position of fuse 3, still offer on the steel sheet 2 and be used for the assembly the pressure nail hole 11 of pressure nail 4, should press nail 4 holes to offer the step form of screens control slot 18 for the entrance, 2 outer arcwall sides of steel sheet are close to still offer the recess scope 12 that can supply to press nail 4 actions around the pressure nail hole 11.
First clamping grooves 13 are formed in the positions, close to the step holes 8, of the outer arc-shaped side of the steel plate 2, the first clamping grooves 13 are symmetrically arranged, second clamping grooves 19 are formed in the side faces of the steel plate 2 in the length direction and in the positions corresponding to the first clamping grooves 13, and the second clamping grooves 19 are also symmetrically arranged.
The doctor can use the surgical instrument to stably hold the steel plate 2 by using the first clamping groove 13 or the second clamping groove 19 on the steel plate 2.
The assembly nail 5 is integrally formed by a cylindrical part with an external thread and a nail head provided with a quincuncial groove, and the assembly nail 5 is matched with the step hole 8 on the steel plate 2.
The pressing nail 4 is composed of a nail cover 14 and a columnar rod, crescent notches are arranged on opposite sides of the nail cover 14, a first end 15 and a second end 16 which can respectively lock adjacent bone screws 1 are formed between the crescent notches, the nail cover 14 is provided with a quincuncial groove, a fixture block 20 is arranged at the joint of the lower end of the nail cover 14 and the columnar rod, the fixture block 20 is in a right triangle shape, and the right angle end of the fixture block faces one end of the nail cover 14.
The blocking control groove 18 at the entrance of the nail pressing hole 11 extends in an arc shape in the direction far away from the center of the steel plate 2, and the blocking control groove 18 extends in the transverse direction and enables the columnar locking wire 21 to be blocked.
The locking wire 21 is made of nickel-titanium memory alloy wire which can be installed on the arc-shaped side of the position-locking control groove 18 and can elastically move.
It should be noted that the nitinol wire material of the locking wire 21 has "superelasticity effect" and can deform when subjected to an external force, and can recover to the original shape after the external force is removed, that is, in an operation, a doctor rotates the pressing nail 4 by using a surgical instrument to move one side of the clamping block 20 on the pressing nail 4 to the corresponding locking wire 21, at this time, the locking wire 21 deforms elastically toward the arc-shaped side of the clamping control groove 18 under the external force, at this time, the space left by the locking wire 21 allows the pressing nail 4 to rotate to the other end, and the high-elastic nitinol wire can recover to the original shape when no external force is applied, so that the locking wire 21 is clamped at a preset position again; due to the straight edge design of the two ends of the position-locking control groove 18, the locking wire 21 can only move 90 degrees within a limited range, and the two ends of the press nail 4 can achieve the purpose of locking the bone screw 1 or releasing the bone screw 1.
Example two: referring to fig. 12-15, a lumbar vertebrae side approach steel plate and fusion cage system can be set as two nails according to actual requirements, two bone screws 1 are respectively disposed in ball socket holes 9 at two ends of the steel plate 2 in the length direction, a step hole 8 for mounting an assembly nail 5 is disposed at the center of the two nail-shaped steel plate 2, blind holes are disposed at two sides of the steel plate 2 adjacent to the step hole 8 in the length direction, a groove 12 is further disposed at the circumferential surface of the steel plate 2 near the nail pressing hole 11 for the nail pressing 4 to move within a controllable range, a through hole is disposed at the center of the nail pressing 4 for the post of the assembly nail 5 to pass through, and two ends of the nail pressing 4 in the axial direction extend toward the ball socket holes 9.
When the round convex block at the bottom side of the press nail 4 acts on the corresponding blind hole on the steel plate 2 and is matched with the locked assembly nail 5, the press nail 4 can lock the bone screw 1 assembled in the ball socket hole 9, and when the assembly nail 5 is loosened, the press nail 4 is rotated to be away from the range of the ball socket hole 9, and the bone screw 1 can be separated from the control of the press nail 4 on the press nail 4.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
Claims (8)
1. The utility model provides a steel sheet and fuse ware system of lumbar vertebrae side approach, its characterized in that contains bone screw, steel sheet, fuses ware, locking wire, pressure nail and assembly nail, the pin fin of bone screw is bulb form, and the pole body of this bone screw is provided with double-thread section, single-thread section, double-thread section set up and be close to the position of bone screw pin fin, single-thread section sets up and is keeping away from the position of bone screw pin fin, this bone screw tail department has seted up the blade.
2. The steel plate and fusion cage system for the lateral approach of lumbar vertebrae as claimed in claim 1, wherein the steel plate is rectangular and has a stepped hole in its center, ball holes are formed at each corner of the steel plate, the steel plate is designed to be not sharp around, each side of the steel plate is recessed toward the center of the steel plate, the steel plate is arc-shaped, a plurality of positioning protrusions protrude from the inner side of its circumference, the positioning protrusions limit the installation position of the fusion cage, the steel plate is further provided with a pressing pin hole for assembling the pressing pin, the pressing pin hole is step-shaped with a positioning control slot at the entrance, and the outer arc side of the steel plate is provided with a groove range near the periphery of the pressing pin hole for the pressing pin to move.
3. The steel plate and fusion cage system for lumbar lateral approach according to claim 2, wherein a first engaging groove is formed on the outer arc surface side of the steel plate near the stepped hole, the first engaging groove is symmetrically arranged, and a second engaging groove is formed on the longitudinal side surface of the steel plate at a position corresponding to the first engaging groove, and the second engaging groove is symmetrically arranged.
4. The lumbar lateral approach plate and cage system as claimed in claim 1, wherein said fitting nail is integrally formed with a cylindrical member having external threads and a head having a quincunx groove, said fitting nail being adapted to a stepped hole of said steel plate.
5. The lumbar lateral approach plate and fusion cage system according to claim 1, wherein the pressing nail is composed of a nail cover and a cylindrical rod, the nail cover is provided with crescent notches at opposite sides, a first end and a second end for locking each adjacent bone screw are formed between the crescent notches, the nail cover is provided with a quincunx groove, a connecting portion of the lower end of the nail cover and the cylindrical rod is provided with a clamping block, the clamping block is in a right triangle shape, and the right angle end of the clamping block faces one end of the nail cover.
6. The lumbar lateral approach plate and cage system as set forth in claim 2, wherein said locking control slot at the entrance of the staple hole is arc-shaped extending in a direction away from the center of the plate and extending in a lateral direction and locking said locking wire in a cylindrical shape.
7. The lumbar lateral approach plate and cage system of claim 6, wherein said locking wires are nitinol wires that are elastically movable on the arc-shaped sides of said detent control slots.
8. The steel plate and cage system for lumbar lateral approach as claimed in claim 1, wherein said cage is an elongated rectangular block with a connecting hole having an internal thread at its end for cooperating with said fitting nail to connect said cage with said steel plate, said cage is made of PEEK or ti alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022614126.1U CN213525695U (en) | 2020-11-13 | 2020-11-13 | Steel plate for lumbar lateral approach and fusion cage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022614126.1U CN213525695U (en) | 2020-11-13 | 2020-11-13 | Steel plate for lumbar lateral approach and fusion cage system |
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| Publication Number | Publication Date |
|---|---|
| CN213525695U true CN213525695U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022614126.1U Active CN213525695U (en) | 2020-11-13 | 2020-11-13 | Steel plate for lumbar lateral approach and fusion cage system |
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| CN (1) | CN213525695U (en) |
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- 2020-11-13 CN CN202022614126.1U patent/CN213525695U/en active Active
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