CN211300525U - Intervertebral fusion device driver - Google Patents
Intervertebral fusion device driver Download PDFInfo
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- CN211300525U CN211300525U CN201921139945.6U CN201921139945U CN211300525U CN 211300525 U CN211300525 U CN 211300525U CN 201921139945 U CN201921139945 U CN 201921139945U CN 211300525 U CN211300525 U CN 211300525U
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- clamping
- impactor
- force
- intervertebral fusion
- cage
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Abstract
The utility model provides an interbody fusion cage ware is beaten into ware, interbody fusion cage ware is beaten into ware and is included: the clamping structure for clamping the intervertebral fusion cage comprises a connecting part and a clamping part connected to one end of the connecting part; the force application structure is used for applying force to the clamping piece so as to enable the clamping piece to be clamped under force; the connecting part is connected with the force application structure. The intervertebral fusion device driver is simple in structure, and avoids the structure that the fixation and the unscrewing of the intervertebral fusion device are realized through threads when the intervertebral fusion device is implanted in the traditional mode; in the whole intervertebral fusion operation, the intervertebral fusion device is not affected by any torsion; the risk of loosening of the implanted intervertebral fusion device is reduced; the universal fixture has strong universality and can realize clamping and loosening effects on various interbody fusion cages; the function of clamping and loosening the interbody fusion cage can be quickly realized, the time cost of screwing in and screwing out the threads is saved, and the operation time is shortened.
Description
Technical Field
The utility model belongs to the technical field of surgical instruments, a ware is stricken to interbody fusion cage is related to.
Background
In the intervertebral fusion operation, an impactor is required to hold the intervertebral fusion device and implant the device into the spine of a human body. The prior art generally employs drivers with threaded heads. Firstly, the fusion device is screwed into the head thread structure of the driver, then the fusion device is implanted into a human body, the thread is screwed out in the opposite direction, the driver is removed, and the implantation is completed. However, when the thread is screwed out in the opposite direction, the fusion cage is subjected to slight torsion, and when the thread is tightly matched, the torsion value is increased, so that the risk of loosening the fusion cage is increased.
Therefore, there is a need in the art to provide an intervertebral cage driver that simplifies the driving process of the intervertebral cage and reduces the risk of loosening the implanted intervertebral cage.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides an interbody fusion cage ware impactor, when it had overcome the opposite direction back-out screw thread among the prior art, the fusion cage exists the shortcoming of not hard up risk, and has simplified interbody fusion cage's the process of squeezing into, has practiced thrift the implantation time.
To achieve the purpose, the technical scheme of the utility model is as follows:
an interbody cage impactor, said interbody cage impactor comprising:
the clamping structure for clamping the intervertebral fusion cage comprises a connecting part and a clamping part connected to one end of the connecting part;
the force application structure is used for applying force to the clamping piece so as to enable the clamping piece to be clamped under force;
the connecting part is connected with the force application structure.
The intervertebral fusion device driver further comprises an elastic piece connected with the connecting portion and the force application structure, and the elastic piece is arranged in a groove in the outer surface of the connecting portion.
The clamping piece comprises a plurality of clamping pieces and a plurality of clamping plates respectively connected with the clamping pieces, and the clamping plates are connected with the connecting part.
The clamping pieces are parallel to each other, and included angles among the clamping plates are acute angles.
The other end of the connecting part is provided with a limiting structure and a positioning structure for preventing the force application structure from sliding down.
The connecting portion includes a connecting rod.
The force application structure is connected with the connecting part in a sliding mode.
The force application structure comprises a sleeve, the connecting part is sleeved in the sleeve, and the clamping piece extends out of the sleeve.
One end of the force application structure, which is close to the clamping piece, is connected with a closing-in part, and the diameter of the closing-in part is gradually expanded from one end, which is far away from the clamping piece, to one end, which is close to the clamping piece.
The surface of the sleeve is provided with a cleaning hole.
The utility model also provides a use method of intervertebral fusion ware impactor as above, the method includes following steps:
the clamping piece is positioned on the interbody fusion cage, an operator applies force to the force application structure, then the force application structure applies force to the clamping piece, the clamping piece is tightened to clamp the interbody fusion cage, after the interbody fusion cage is placed at a required position, the force applied to the force application structure is removed, and the clamping piece is opened and separated from the interbody fusion cage.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides an intervertebral fusion device driver which is suitable for intervertebral fusion operation, has simple structure and avoids the fixation and the unscrewing structure of the intervertebral fusion device through threads when the traditional intervertebral fusion device is implanted; in the whole intervertebral fusion operation, the intervertebral fusion device is not affected by any torsion; the risk of loosening of the implanted intervertebral fusion device is reduced;
the utility model provides an interbody fusion cage driver which has strong universality and can realize clamping and loosening effects on various interbody fusion cages;
the utility model provides an interbody fusion cage driver passes through the elasticity function of elastic component, can realize the centre gripping fast and loosen interbody fusion cage's function, has saved the time cost of screw in and screw out screw thread, has shortened operation time.
Drawings
Fig. 1 is a schematic structural view of an intervertebral cage impactor provided in embodiment 1;
FIG. 2 is a cross-sectional view of an impactor for an intervertebral fusion cage according to example 1;
FIG. 3 is an enlarged schematic view of portion A of FIG. 1;
fig. 4 is an enlarged schematic structural view of a portion B in fig. 2.
Wherein:
1 clamping structure 2 sleeve
3 limiting nut 4 handle
5 spring 6 locating part
7 tail cap 8 holder
9 closing-in sheet 10 cleaning hole
11 rod bodies.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "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 simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted 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 by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Example 1
An interbody cage impactor, said interbody cage impactor comprising:
the clamping structure for clamping the intervertebral fusion cage comprises a connecting part and a clamping part connected to one end of the connecting part;
the force application structure is used for applying force to the clamping piece so as to enable the clamping piece to be clamped under force;
the connecting part is connected with the force application structure.
The use method of the intervertebral fusion cage impactor comprises the following steps:
the clamping piece is positioned on the interbody fusion cage, an operator applies force to the force application structure, then the force application structure applies force to the clamping piece, the clamping piece is tightened to clamp the interbody fusion cage, after the interbody fusion cage is placed at a required position, the force applied to the force application structure is removed, and the clamping piece is opened and separated from the interbody fusion cage.
The force applying structure applies a force to the clamping member so that the clamping member clamps the cage, and removal of the force releases the clamping member from the cage, thereby completing implantation of the cage.
The interbody fusion cage replaces threaded connection by clamping, so that a structure that the interbody fusion cage is fixed and screwed out through threads when the interbody fusion cage is implanted in the traditional manner is avoided; in the whole intervertebral fusion operation, the intervertebral fusion device is not affected by any torsion; the risk of loosening of the implanted intervertebral fusion device is reduced; the commonality is strong, can realize centre gripping and unclamp the effect to multiple interbody fusion cage.
The intervertebral fusion device driver further comprises an elastic piece connected with the connecting portion and the force application structure, and the elastic piece is arranged in a groove in the outer surface of the connecting portion.
The elastic piece enables the intervertebral fusion device driver to be clamped stably and can loosen the intervertebral fusion device quickly, so that the time cost of screwing in and screwing out threads is saved, and the operation time is shortened. The elastic member may be a spring, for example, as long as the above function is achieved. The spring is sleeved on the connecting portion, and the diameter of the spring is larger than the maximum diameter of the connecting portion. The diameter of the spring wire of the spring is larger than the depth of the groove on the connecting part. The spring and the force application structure can be in tight fit, and the spring can contract or expand when the force application structure moves. The impactor of the interbody fusion cage can be provided with a plurality of elastic pieces so as to achieve a better elastic effect.
The clamping piece comprises a plurality of clamping pieces and a plurality of clamping plates respectively connected with the clamping pieces, and the clamping plates are connected with the connecting part. The clamping piece can be shaped according to the structure of the hole on the intervertebral fusion device; the clamping plate has higher strength than the clamping piece so as to increase the service life of the clamping piece.
The clamping pieces are parallel to each other, and included angles among the clamping plates are acute angles. The included angle between a plurality of grip blocks is the acute angle, makes things convenient for force application structure to exert effort.
The clamping member may also include a flared leaf spring.
The other end of the connecting part is provided with a limiting structure and a positioning part for preventing the force application structure from sliding down.
The limiting structure comprises a tail cap, and the diameter of the tail cap is larger than the size of the force application structure.
The positioning part comprises a cavity with a mark, the cavity is sleeved on the connecting part, and the mark comprises any one or the combination of at least two of a handle, a groove or a pattern so as to determine the installation direction of the implant interbody fusion cage.
The connecting portion includes a connecting rod.
The force application structure is connected with the connecting part in a sliding mode.
The force application structure comprises a sleeve, the connecting part is sleeved in the sleeve, and the clamping piece extends out of the sleeve. The force application structure can be other structures as long as the force application structure can apply acting force to the clamping piece to enable the clamping piece to clamp and can conveniently and quickly remove the acting force during operation.
One end of the force application structure, which is close to the clamping piece, is connected with a closing-in part, and the diameter of the closing-in part is gradually expanded from one end, which is far away from the clamping piece, to one end, which is close to the clamping piece. The arrangement of the closing-in part further facilitates the force applying structure to apply the acting force to the clamping piece. The closing-in part can be a plurality of closing-in pieces connected to the edge of a hole at one end of the sleeve, the closing-in pieces are arranged on the outer surface of the clamping plate, and the clamping piece can play a guiding role in the clamping process.
The surface of the sleeve is provided with a cleaning hole, so that the driver can be cleaned conveniently.
Specifically, the method comprises the following steps:
the impactor for the interbody fusion cage is shown in figures 1-4, and comprises a clamping structure 1, a force application structure and an elastic piece;
the clamping structure 1 comprises a rod body 11 and a clamping piece 8 connected to one end of the rod body 11; the force application structure comprises a sleeve 2; the rod body 11 is sleeved in the sleeve 2, and the clamping piece 8 extends out of the sleeve 2;
the surface of the rod body 11 is provided with a plurality of limiting grooves; the plurality of elastic pieces are respectively arranged in the plurality of limiting grooves; the sleeve 2 is sleeved on the rod body 11, the sleeve 2 is fixedly connected with the elastic piece, and the sleeve 2 is connected with the rod body 11 in a sliding manner, such as welding;
the clamping part 8 comprises a plurality of clamping pieces and clamping plates respectively connected with the clamping pieces, the clamping plates are connected with the rod body 11, the clamping pieces are parallel to each other, and included angles among the clamping plates are acute angles. The clamping piece can be shaped according to the structure of the hole on the fusion cage; the clamping plate has higher strength than the clamping plate so as to increase the service cycle of the clamping plate;
as another embodiment, the clamping member 8 may also be an open spring;
as a preferred embodiment, the clamping piece and the rod body are of an integral structure;
the clamping pieces and the clamping plates can be made of metal or plastic, and the clamping pieces and the clamping plates need to have certain elasticity, can be tightened when stressed and can restore the original shape after external force is removed;
the clamping rod 1 and the sleeve 2 are in sliding fit, and the middle of the clamping rod is connected with the elastic piece, so that the clamping pieces 8 can be closed and opened after being stressed;
the impactor of the interbody fusion cage further comprises a limiting nut 3, a positioning part 6 and a tail cap 7 which are arranged at the other end of the rod body 11 and are sequentially sleeved, and the tail cap 7 is far away from the clamping piece 8;
the limiting nut 3 is in threaded connection with the sleeve 2, and both the limiting nut 3 and the sleeve 2 are in sliding connection with the rod body 11; the limiting nut 3 is convenient for a user to push the sleeve 2; the limiting nut 3 realizes the backward limiting of the sleeve 2 due to the arrangement of the positioning part 6 and the limiting part;
the positioning part 6 is fixed on the tail cap 7 (such as welding and the like), and the diameter of the positioning part is gradually increased along the direction from the limiting nut 3 to the tail cap 7; as another embodiment, a limiting table is arranged on the rod body 11 located in the positioning portion 6, a limiting groove is arranged at a position of the positioning portion corresponding to the limiting table, and the limiting table is matched with the limiting groove for further ensuring the stability of the positioning portion 6;
the positioning part 6 is provided with any one or a combination of at least two of a handle 4, a groove or a pattern, such as the handle and the groove, the handle and the pattern, and the like, so as to determine the installation direction of the implant interbody fusion cage; the handle 4 is an anti-skid handle, and an included angle between the handle 4 and the rod body on the side where the tail cap 7 is located is an acute angle; as the preferred technical scheme, the handle 4 is connected with the positioning part 6 by welding;
the diameter of the tail cap 7 is larger than that of the sleeve 2 or the positioning part 6, the tail cap 7 is provided with a hole with internal threads, one end of the rod body 11 is inserted into the hole with the internal threads, and the two are in threaded connection;
a closing-in part is arranged at one end, close to the clamping piece 8, of the sleeve 2, and the diameter of the closing-in part is gradually expanded from one end, far away from the clamping piece 8, to one end, close to the clamping piece; specifically, the closing-in part mainly comprises a plurality of closing-in sheets 9 connected to the end face of the sleeve 2, and the plurality of closing-in sheets 9 are positioned on the surface of the clamping piece 8; when the sleeve 2 moves towards one end of the clamping piece 8, the closing-up piece 9 also moves towards one end of the clamping piece 8, and meanwhile, the clamping plate of the clamping piece 8 is pressed to be tightened inwards, so that the clamping pieces are driven to be tightened until the fusion cage can be clamped;
the surface of the sleeve 2 is provided with at least one cleaning hole 10, so that the clamp holder can be cleaned conveniently;
the elastic part comprises a spring 5, the spring 5 is sleeved on the rod body 11 and is positioned in a limiting groove on the rod body 11, the outer diameter of the spring 5 is larger than the maximum diameter of the rod body 11, the inner diameter of the spring is larger than the groove depth of the limiting groove on the rod body 11, the spring 5 is tightly matched with the sleeve 2, and the spring 5 contracts or expands when the sleeve 2 slides.
The intervertebral fusion cage driver realizes the effects of clamping and loosening the fusion cage through the elastic sheet structure of the clamping piece 8 and the resetting function of the elastic piece. In the whole process of implanting and removing the impactor, the fusion cage is not affected by any external force, and the risk of loosening is avoided.
In another embodiment, the clamping member 8 may also be an open spring structure, and after being initially positioned in the mounting groove of the interbody fusion cage, the limiting nut 3 is pushed forward, and the limiting nut 3 drives the sleeve to move forward. At the moment, the elastic sheet structure of the clamping piece 8 is stressed and closed, and the effect of clamping the interbody fusion cage is achieved. After the implantation is finished, the limiting nut 3 is loosened, the sleeve 2 moves backwards to the initial position through the resetting action of the elastic part, the external force acting on the clamping piece 8 disappears at the moment, and the clamping piece 8 also restores to the initial opening state. At this point the impactor may be removed and implantation completed. In the whole process of implanting and removing the impactor, the fusion cage is not affected by any external force, and the risk of loosening is avoided.
The use method of the intervertebral fusion device comprises the following steps:
when the impactor of the intervertebral fusion device is not used, the spring 5 is in a pre-compression state, and the elastic sheet type clamping piece of the clamping piece 8 is also in an opening state; after the mounting groove with fuse the ware is just fixed a position, promote stop nut 3 forward, stop nut 3 can drive sleeve pipe 2 and also move forward, and the binding off piece that sets up on sleeve pipe 2 this moment can apply external force for grip block or shell fragment of holder 8, makes it draw close to the centre, realizes binding off, has reached the effect of centre gripping fuse ware.
After the implantation is finished, the limiting nut 3 is loosened, the sleeve 2 moves backwards to the initial position through the reset action of the spring 5, the external force acting on the clamping piece 8 disappears at the moment, and the clamping piece 8 also restores to the initial open state. At this point the impactor may be removed and implantation completed. In the whole process of implanting and removing the impactor, the fusion cage is not affected by any external force, and the risk of loosening is avoided.
In summary, the intervertebral fusion device driver has the following advantages:
1. the effect of clamping and loosening the fusion cage is realized quickly through the elastic function of the clamping piece and the reset function of the spring; 2. the time cost for screwing in and screwing out the threads is saved; 3. the structure is simple, and the traditional structure of fixing and screwing out through threads is avoided; 4. in the whole intervertebral fusion operation, the fusion cage is not affected by any external force; 5. can realize centre gripping and loosen the effect to multiple fusion cage, the commonality is strong.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. An intervertebral cage impactor, comprising:
the clamping structure for clamping the intervertebral fusion cage comprises a connecting part and a clamping part connected to one end of the connecting part;
the force application structure is used for applying force to the clamping piece so as to enable the clamping piece to be clamped under force;
the connecting part is connected with the force application structure.
2. The impactor of claim 1, further comprising a resilient member coupled to both the connecting portion and the force applying structure, the resilient member being disposed in a recess in an outer surface of the connecting portion.
3. The impactor for an intervertebral fusion cage according to claim 1 or 2, wherein the clamping member includes a plurality of clamping pieces and a plurality of clamping plates connected to the plurality of clamping pieces, respectively, and the plurality of clamping plates are connected to the connecting portion.
4. The impactor of claim 3, wherein the plurality of clamping blades are parallel to each other, and the included angle between the plurality of clamping plates is acute.
5. The impactor for the interbody fusion cage according to claim 1 or 2, wherein the other end of the connecting portion is provided with a limiting structure and a positioning structure for preventing the force application structure from sliding off.
6. An intersomatic cage impactor according to claim 1 or 2, wherein the connecting portion comprises a connecting rod.
7. An intersomatic cage impactor according to claim 1 or 2, wherein the force applying structure is slidably connected to the connecting portion.
8. The device as claimed in claim 1 or 2, wherein the force applying structure comprises a sleeve, the connecting portion is disposed in the sleeve, and the holder extends out of the sleeve.
9. The device according to claim 1 or 2, wherein the force applying structure is connected to a mouth portion at an end close to the clamping member, and the mouth portion is gradually expanded from an end far away from the clamping member to an end close to the clamping piece.
10. An intervertebral fusion device driver according to claim 8, wherein the sleeve surface is provided with a cleaning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921139945.6U CN211300525U (en) | 2019-07-19 | 2019-07-19 | Intervertebral fusion device driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921139945.6U CN211300525U (en) | 2019-07-19 | 2019-07-19 | Intervertebral fusion device driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211300525U true CN211300525U (en) | 2020-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921139945.6U Active CN211300525U (en) | 2019-07-19 | 2019-07-19 | Intervertebral fusion device driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211300525U (en) |
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2019
- 2019-07-19 CN CN201921139945.6U patent/CN211300525U/en active Active
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