CN217219291U - Spine self-locking interbody fusion cage and holder for same - Google Patents
Spine self-locking interbody fusion cage and holder for same Download PDFInfo
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- CN217219291U CN217219291U CN202123317080.8U CN202123317080U CN217219291U CN 217219291 U CN217219291 U CN 217219291U CN 202123317080 U CN202123317080 U CN 202123317080U CN 217219291 U CN217219291 U CN 217219291U
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Abstract
The utility model provides a spine self-locking interbody fusion cage and a holder for the fusion cage, which comprises a fusion cage main body, wherein the top end of the fusion cage main body is provided with at least one first through hole inclined towards one side and at least one second through hole inclined towards the other side, a first self-locking screw is arranged in the first through hole, at least one part of the first self-locking screw is exposed out of the first through hole, the second self-locking screw is arranged in the second through hole in a penetrating way, at least one part of the second self-locking screw is exposed out of the second through hole, the fusion cage body extends into and is embedded in the spine, the exposed parts of the first self-locking screw and the second self-locking screw are respectively tapped into the spine, the main body of the fusion cage is locked between the spine and the spine, so that the main body of the fusion cage is instantly and stably locked with the vertebral body, the incision and tissue damage is small, the operation efficiency is high, and the later-period better rehabilitation and fusion effect are facilitated.
Description
Technical Field
The utility model relates to a supplementary utensil technical field that fuses of backbone especially relates to a backbone auto-lock interbody fusion cage and cage are with holder.
Background
The lumbar vertebra intervertebral fusion is one of the treatment means of present accurate treatment backbone lumbar vertebra disease, present common operation mode is for opening one section 5 to 10 centimeters's incision in the lumbar vertebra disease affected part, dial out the muscle beside the vertebra, the edge adopts the fix with screw, department implantation fusion restorer to the joint through open operation mode, thereby it is obvious that the incision is great with the destruction to the tissue, and operation efficiency is lower, the degree of difficulty is great, thereby still can not reach satisfied effect on the recovered and fusion efficiency in patient later stage, seriously restrict this treatment technique's application and development, further improvement and optimization are badly needed.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a self-locking spinal cage and a holder for the cage, which can solve all or one of the problems of the background art.
Based on the above-mentioned purpose, the utility model provides a backbone auto-lock interbody fusion cage, include:
the fusion cage comprises a fusion cage body, a first fixing part and a second fixing part, wherein the top end of the fusion cage body is provided with at least one first through hole inclined to one side and at least one second through hole inclined to the other side;
the first self-locking screw penetrates through the first through hole, and at least one part of the first self-locking screw is exposed out of the first through hole;
the second self-locking screw penetrates through the second through hole, and at least one part of the second self-locking screw is exposed out of the second through hole;
the fusion cage main body is embedded between spines, and the exposed parts of the first self-locking screw and the second self-locking screw are respectively attacked into the spines so as to lock the fusion cage main body between the spines.
Preferably, at least a part of the outer wall of the first self-locking screw and at least a part of the inner wall of the first through hole are provided with mutually adaptive first connecting threads, and at least a part of the outer wall of the second self-locking screw and at least a part of the inner wall of the second through hole are provided with mutually adaptive second connecting threads, so that the first self-locking screw is in threaded connection with the fusion device body, and the second self-locking screw is in threaded connection with the fusion device body.
Preferably, the first self-locking screw comprises a first nail head and a first nail body, wherein the outer wall of the first nail body is axially provided with a first self-tapping thread; the second self-locking screw comprises a second nail head and a second nail body, wherein a second self-tapping thread is axially arranged on the outer wall of the second self-locking screw, and a second connecting thread is axially arranged along the second nail head.
Preferably, the pitch of the first connecting thread is smaller than the pitch of the first self-tapping thread, and the pitch of the second connecting thread is smaller than the pitch of the second self-tapping thread.
Preferably, the fusion cage main body comprises a fusion cage base and a fusion cage base station arranged at the top end of the fusion cage base, and the fusion cage base station is detachably and fixedly connected with the fusion cage base.
Preferably, hangers are integrally arranged on two sides of the bottom end of the fusion device base station, hanging grooves matched with the hangers are formed in the side ends of the fusion device base station, and the hangers are fastened and fixed in the hanging grooves, so that the fusion device base station is detachably and fixedly connected with the fusion device base station.
Preferably, the first through hole and the second through hole are inclined at an angle of 25 to 35 ° from the height direction, and the inclination directions of the first through hole and the second through hole are opposite.
Preferably, the number of the first through holes is two, the number of the second through holes is one, and the two first through holes are respectively arranged on two sides of the second through hole.
Preferably, any one or more of A-D are also included:
a: the upper end of the base of the fusion device is designed to be rectangular, and the lower end of the base of the fusion device is designed to be round and blunt;
b: the side end face of the fusion device base is designed to be a dentate convex structure;
c: the middle of the base of the fusion cage is designed to be a hollow structure;
d: one or more butt-joint ports are arranged at the top end of the fusion cage main body.
A holder for a spine self-locking interbody fusion cage is applied to any fusion cage main body, and is characterized by comprising a fusion cage holding rod, wherein one or more connecting columns are correspondingly arranged at the tail end of the fusion cage holding rod and are used for being matched with and connected with the fusion cage main body.
From the above, can see out, the utility model provides a pair of backbone auto-lock interbody fusion cage and ware of fuse are with holder opens the opening about a centimeter in the affected part, stretch into the fusion cage main part and bury underground in the backbone is intervertebral, attack the backbone of fusion cage both sides respectively through the part that first auto-lock screw that sets up with the slope and the second auto-lock screw exposes, lock in the backbone intervertebral with fusing the cage main part, realize stabilizing the lock solid in the twinkling of an eye with the centrum, traditional pedicle screw internal fixation mode has been replaced, effectively reduce the operation incision, reduce the destruction to the tissue, improve operation efficiency, do benefit to better recovery in later stage and fuse the effect.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 structural diagram of a fusion cage body according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a first self-locking screw according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a second self-locking screw according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating the fusion cage holding members according to the embodiment of the present invention in butt joint;
fig. 5 is a schematic structural view of a cage holding rod according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a fusion cage base station according to an embodiment of the present invention.
In the figure: 1. a fusion cage main body; 2. a first through hole; 3. a second through hole; 4. a first self-locking screw; 41. a first head; 42. a first nail body; 43. a first self-tapping thread; 5. a second self-locking screw; 51. a second head; 52. a second nail body; 53. a second self-tapping thread; 6. a first connecting thread; 7. a second connecting thread; 8. a cage base; 81. hanging a groove; 9. a fusion device base station; 91. hanging a lug; 10. a butt joint port; 11. a cage grip bar; 12. connecting columns; 13. an inner core; 14. a handle; 15. a screwdriver with a long handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should have the ordinary meaning as understood by those having ordinary skill in the art to which the present disclosure belongs. The use of "first," "second," and the like in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The utility model provides a backbone auto-lock interbody fusion cage, as shown in the figure, including fusion cage main part 1, fusion cage main part 1 top is seted up at least one to the first through-hole 2 of one side slope and at least one to the second through-hole 3 of opposite side slope, be provided with first self-locking screw 4, first self-locking screw 4 wears to locate in first through-hole 2, and at least a part of first self-locking screw 4 exposes from first through-hole 2, be provided with second self-locking screw 5, second self-locking screw 5 wears to locate in second through-hole 3, and at least a part of second self-locking screw 5 exposes from second through-hole 3, wherein, fusion cage main part 1 buries in the backbone, attack the backbone respectively with the part that first self-locking screw 4 and second self-locking screw 5 exposed, in order to lock fusion cage main part 1 in the backbone.
The utility model discloses a set up the fusion cage main part 1, the top of fusion cage main part 1 is equipped with at least one first through-hole 2 that inclines to one side and at least one second through-hole 3 that inclines to the other side, be provided with first self-locking screw 4, first self-locking screw 4 is worn to locate in first through-hole 2, and at least a part of first self-locking screw 4 exposes from first through-hole 2, be provided with second self-locking screw 5, second self-locking screw 5 is worn to locate in second through-hole 3, and at least a part of second self-locking screw 5 exposes from second through-hole 3, thereby compared with the traditional open type operation mode, can adopt the scope-assisted minimal invasive operation mode, open the opening about a centimeter in the affected part, put into scope-assisted, stretch into fusion cage main part 1 and bury underground in the backbone intervertebral, attack the backbone respectively with the part that first self-locking screw 4 and second self-locking screw 5 exposed, with locking the integration ware main part 1 in the backbone intervertebral, through beating the self-locking screw in to the vertebra, squeeze into the upper and lower centrum in the clearance and provide centrum stability to realize stabilizing the lock solid in the twinkling of an eye with the centrum, incision and tissue damage are littleer, operation efficiency is higher, thereby do benefit to better recovered and the fusion effect in later stage.
The embodiment of the present invention provides a first connection thread 6 adapted to each other is disposed on at least a portion of the outer wall of the first self-locking screw 4 and at least a portion of the inner wall of the first through hole 2, and a second connection thread 7 adapted to each other is disposed on at least a portion of the outer wall of the second self-locking screw 5 and at least a portion of the inner wall of the second through hole 3, so that the first self-locking screw 4 is in threaded connection with the fusion device body 1, the second self-locking screw 5 and the fusion device body 1.
In the embodiment of the present invention, the first self-locking screw 4 includes a first nail head 41 and a first nail body 42 having a first self-tapping thread 43 axially disposed on an outer wall, and the first connecting thread 6 is disposed along the axial direction of the first nail head 41; the second self-locking screw 5 comprises a second nail head 51 and a second nail body 52, wherein a second self-tapping thread 53 is axially arranged on the outer wall of the second self-locking screw, and a second connecting thread 7 is axially arranged along the second nail head 51, so that the second self-locking screw is different from a common screw, is more beneficial to being connected with the integrated type of the fusion device main body 1 and is flush with the top end of the fusion device main body 1, wherein the outer diameters of the heads of the first nail head 41 and the second nail head 51 are gradually increased from bottom to top, the outer diameters of the bottoms of the first nail body 42 and the second nail body 52 are gradually reduced from top to bottom, and the second self-locking screw is provided with a sunken platform design, so that the effects of self-tapping and stable nail fixing are achieved.
In the embodiment of the present invention, the pitch of the first connecting thread 6 is smaller than the pitch of the first self-tapping thread 43, and the pitch of the second connecting thread 7 is smaller than the pitch of the second self-tapping thread 53.
The utility model discloses an in the embodiment, fuse ware main part 1 including fuse ware base 8 with set up in the fuse ware base station 9 that fuses 8 tops of ware base, fuse ware base station 9 and fuse 8 detachable fixed connection of ware base, preferred, fuse ware base station 9 can design and be the rectangle platform, first perforating hole 2, the slope of second perforating hole 3 link up in fusing ware base station 9 upper and lower surface, and with fuse the ware base station 9 upper and lower surface looks parallel and level.
The utility model discloses an in the embodiment, fuse 9 bottom both sides an organic whole of ware base station and be provided with hangers 91, fuse 8 sides of ware base and offer with the hanging groove 81 of hangers adaptation, hanger 91 lock joint is fixed in hanging groove 81 to make fuse ware base station 9 and fuse 8 detachable fixed connection of ware base, in order to realize firmly setting up the connection.
In the embodiment of the present invention, as shown in fig. 6, the inclination angle of the first through hole 2 and the second through hole 3 from the height direction is 25 to 35 °, preferably 30 °, and the inclination directions of the first through hole and the second through hole are opposite to each other.
In the embodiment of the present invention, the number of the first through holes 2 is two, the number of the second through holes 3 is one, and the two first through holes 2 are respectively disposed on two sides of the second through holes 3.
In the embodiment of the utility model, the outline design of the upper end of the fusion cage base 8 is rectangular, and the outline design of the lower end of the fusion cage base 8 is round and blunt, so as to be more beneficial to the implantation of the interbody fusion cage; the side end face of the base 8 of the fusion device is designed to be a dentate bulge structure, specifically, the side end face can be designed to be a comb-shaped structure, so that the friction force can be increased, and the intervertebral fusion device is prevented from moving backwards; the middle of the fusion cage base 8 is designed to be a hollow structure so as to fill the position of autogenous bone, which is beneficial to increasing the later fusion rate; the top end of the fusion cage body 1 is provided with one or more butt joints 10.
Wherein, the specific size of the fusion cage main body 1 can be designed to be 22-26mm in height, 12-16mm in length and 10-14mm in width, the preferable size of the fusion cage main body 1 is 24mm in height, 14mm in length and 12mm in width, and the diameter of the self-locking screw can be selected to be 2.4/2.6/2.8 mm.
A retainer for a spinal self-locking interbody fusion cage is applied to a fusion cage body 1 in the above, and comprises a fusion cage holding rod 11, wherein one or more connecting columns 12 are correspondingly arranged at the tail end of the fusion cage holding rod 11 and are inserted into the corresponding connecting ports 10 in a matching and butt joint mode, and at least one of the connecting ports 10 is detachably connected and locked with the connecting columns 12, so that in use, the fusion cage holding rod 11 is used for operating the butt joint ports 10 to connect and fix the fusion cage during driving, and the fusion cage is removed after implantation, specifically, for example, three connecting ports 10 are arranged, a thread structure is arranged on the inner side wall of one of the butt joint ports 10, the bottom end of the fusion cage holding rod 11 is connected to the connecting columns 12 through a holding frame, an inner core 13 which is rotatably connected is arranged in the fusion cage holding rod 11 and is fixedly connected to the connecting columns 12 for locking through the inner core 13, the handle 14 at the top end of the handle rod 11 of the fusion cage is rotated to drive the inner core 13 to rotate so as to drive the corresponding connecting column 12 to be locked into the butt joint port 10, and meanwhile, the fusion cage further comprises a long-handle screwdriver 15 which is matched with the long-handle screwdriver to be rotated and screwed into a self-locking screw.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A spinal self-locking interbody cage, comprising:
the fusion cage comprises a fusion cage body, wherein the top end of the fusion cage body is provided with at least one first through hole inclined to one side and at least one second through hole inclined to the other side;
the first self-locking screw penetrates through the first through hole, and at least one part of the first self-locking screw is exposed out of the first through hole;
the second self-locking screw penetrates through the second through hole, and at least one part of the second self-locking screw is exposed out of the second through hole;
the fusion cage main body is embedded between spines, and the exposed parts of the first self-locking screw and the second self-locking screw are respectively attacked into the spines so as to lock the fusion cage main body between the spines.
2. The self-locking spinal interbody fusion cage of claim 1, wherein at least a portion of the outer wall of the first self-locking screw and at least a portion of the inner wall of the first through hole are respectively provided with a first connecting thread, and at least a portion of the outer wall of the second self-locking screw and at least a portion of the inner wall of the second through hole are respectively provided with a second connecting thread, so that the first self-locking screw is in threaded connection with the fusion cage body and the second self-locking screw is in threaded connection with the fusion cage body.
3. The self-locking spinal interbody fusion cage of claim 2, wherein the first self-locking screw includes a first head and a first shank having an outer wall provided with a first self-tapping thread in an axial direction, and a first connecting thread is provided along the first head in the axial direction; the second self-locking screw comprises a second nail head and a second nail body, wherein a second self-tapping thread is axially arranged on the outer wall of the second self-locking screw, and a second connecting thread is axially arranged along the second nail head.
4. The self-locking spinal interbody fusion device of claim 3, wherein the pitch of the first connecting threads is less than the pitch of the first self-tapping threads, and the pitch of the second connecting threads is less than the pitch of the second self-tapping threads.
5. The self-locking spinal interbody fusion cage of claim 1, wherein the cage body comprises a cage base and a cage abutment disposed at a top end of the cage base, and the cage abutment is detachably and fixedly connected to the cage base.
6. The spine self-locking interbody fusion cage of claim 5, wherein hanging lugs are integrally arranged on two sides of the bottom end of the cage base, hanging grooves adapted to the hanging lugs are formed in the side ends of the cage base, and the hanging lugs are fastened and fixed in the hanging grooves, so that the cage base and the cage base are detachably and fixedly connected.
7. The self-locking spinal interbody fusion cage of claim 1, wherein the first through hole and the second through hole are inclined at an angle of 25-35 ° from the height direction, and the first through hole and the second through hole are inclined at opposite directions.
8. The self-locking spinal interbody fusion cage of claim 1, wherein the number of the first through holes is two, the number of the second through holes is one, and the two first through holes are respectively disposed at two sides of the second through holes.
9. The self-locking spinal cage of claim 5 further comprising any one or more of a-D:
a: the upper end of the base of the fusion cage is designed to be rectangular, and the lower end of the base of the fusion cage is designed to be round and blunt;
b: the side end face of the fusion cage base is designed to be in a dentate convex structure;
c: the middle of the base of the fusion cage is designed to be a hollow structure;
d: one or more butt interfaces are arranged at the top end of the fusion cage main body.
10. A holder for a spinal self-locking interbody fusion cage, applied to the cage body of any one of claims 1 to 9, comprising a cage holding rod, wherein one or more connecting columns are correspondingly arranged at the end of the cage holding rod for matching and connecting the cage body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123317080.8U CN217219291U (en) | 2021-12-27 | 2021-12-27 | Spine self-locking interbody fusion cage and holder for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123317080.8U CN217219291U (en) | 2021-12-27 | 2021-12-27 | Spine self-locking interbody fusion cage and holder for same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217219291U true CN217219291U (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123317080.8U Active CN217219291U (en) | 2021-12-27 | 2021-12-27 | Spine self-locking interbody fusion cage and holder for same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217219291U (en) |
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2021
- 2021-12-27 CN CN202123317080.8U patent/CN217219291U/en active Active
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