CN215425026U - Improved adjustable 8-shaped metal plate capable of preventing nail from being withdrawn - Google Patents
Improved adjustable 8-shaped metal plate capable of preventing nail from being withdrawn Download PDFInfo
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- CN215425026U CN215425026U CN202120640910.1U CN202120640910U CN215425026U CN 215425026 U CN215425026 U CN 215425026U CN 202120640910 U CN202120640910 U CN 202120640910U CN 215425026 U CN215425026 U CN 215425026U
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Abstract
The utility model provides an improved adjustable anti-withdrawing novel 8-shaped metal plate which comprises a metal plate body, a main screw and an anti-withdrawing screw, wherein the metal plate body comprises a first plate, a transition plate and a second plate, the first plate, the transition plate and the second plate are sequentially connected to form the 8-shaped plate, the first plate and the second plate are respectively provided with a screw hole and an anti-withdrawing screw hole, the screw hole is internally provided with the main screw, the anti-withdrawing screw is arranged in the anti-withdrawing screw hole, the main screw comprises a cap part and a rod part connected with the cap part, the anti-withdrawing screw comprises a screw cap and a screw rod, the screw cap is connected with the screw rod, the central line of the screw cap and the central line of the screw rod are not matched, and the main screw and the anti-withdrawing screw are fixed on the metal plate body and then the screw cap and the cap are tightly matched. The novel 8-shaped metal plate with the improved adjustable anti-nail-withdrawal function can greatly reduce nail-withdrawal risks, and in addition, can guarantee validity limitation on epiphyseal line growth potential, achieves the purpose of prospective orthopedic surgery, and reduces surgery complications.
Description
Technical Field
The utility model belongs to the technical field of medical treatment, and particularly relates to a novel improved adjustable 8-shaped metal plate for preventing nails from being withdrawn.
Background
The half-lateral epiphysis retardation technology for children has been born for many years, and the half-lateral epiphysis retardation technology is mainly applied to half-lateral epiphysis fusion, gate-shaped nails, even reconstruction steel plates used by partial scholars and the like, so that a lot of complications occur in the application process. Aiming at the problem, the 8-shaped metal plate is inoculated in recent years, and various complications generated in the half-lateral epiphyseal block operation of the traditional technology are better solved. At present, the 8-shaped metal plate on the market mainly comprises 1 steel plate with 2 holes (similar to 8) and 2 hollow screws, and the internal fixing material of the 8-shaped metal plate takes titanium alloy as a main body. Can solve the problems of unequal limb length and angulation deformity of children caused by various reasons clinically to a great extent, has relatively minimal operation, and improves deformity under the condition of reducing the influence on the daily life of the children patients to the maximum extent.
The 8-shaped metal plate on the market is applied for years, has a larger clinical demand market, and still finds that certain defects and higher internal fixation complications exist in the clinical application process. The main features are the following two points:
1. the traditional 8-shaped metal plate has the nail plate joint which is fixed by common pressurization and has no nail withdrawal prevention design such as locking, so that the nail withdrawal condition is not rare clinically;
2. the traditional 8-shaped metal plate nail plate has very limited adjustable angle, the metaphysis development is often expanded and changed in an arc shape, the steel plate and the bone surface can not be attached frequently, certain pre-bending is often needed, the direction of the nail channel can be deformed, the ideal direction can not be smoothly implanted, certain inconvenience in use is realized, the stress concentration effect of the nail plate can be even caused, and the nail breakage and the plate breakage can be easily caused.
In summary, it is necessary to improve the conventional 8-shaped metal plate to reduce clinical complications and operational convenience, thereby providing an improved adjustable nail-withdrawal-preventing novel metal plate.
SUMMERY OF THE UTILITY MODEL
The utility model provides an improved adjustable novel 8-shaped anti-nail-withdrawal metal plate, aiming at the problem of nail withdrawal of the conventional 8-shaped metal plate, the improved adjustable novel 8-shaped anti-nail-withdrawal metal plate can greatly reduce the risk of nail withdrawal, in addition, in the growth process of children, the opening angle between main screws can increase the friction stress between the nail-withdrawal-prevention tail cap and the nail in the gradual change process, the nail withdrawal is limited in the opening process of the nail, the validity limitation on the growth potential of epiphyseal lines is guaranteed, the purpose of prospective orthopedic surgery is achieved, and the surgical complications are reduced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a novel 8 word metal sheets of adjustable anti-back nail of improvement, including the metal sheet body, main screw and anti-back screw, the metal sheet body includes first board, cross cab apron and second board, first board, cross cab apron and second board and connect gradually and form 8 word shaped plate, all be provided with screw hole and anti-back screw hole on first board and the second board, be provided with main screw in the screw hole, be provided with the anti-back screw in the anti-back screw hole, main screw includes cap and the pole portion of being connected with the cap, the anti-back screw includes screw cap and nail pole, the screw cap links to each other with the nail pole, the central line of screw cap and nail pole does not coincide, main screw and anti-back screw fix back on the metal sheet body, cap and screw cap tight fit.
Further, the anti-back screw is in threaded fit with the anti-back screw hole.
Furthermore, the nail cap is circular and one side of the nail cap is processed with a cutting part.
Further, the screw cap comprises an upper surface, a side surface and a lower surface, the side surface is provided with a groove, and after the main screw and the anti-back screw are fixed, one side of the cap part is located in the groove.
Further, the anti-back screw hole is a through hole.
Further, the nail pole free end is provided with plastic portion, and the screw hole is prevented moving back by plastic portion's wearing out.
Further, the plastic part is of a hollow structure.
Furthermore, the screw hole is a ball-shaped universal screw hole, the main screw is a ball-shaped universal screw, the screw cap of the main screw is of a ball head shape, and the screw rod of the main screw is full-thread or half-thread.
Further, the transition plate is an arc-shaped plate or a step-shaped plate.
Furthermore, a Kirschner wire hole is processed on the transition plate.
The utility model has the following beneficial effects for the prior art:
the improved adjustable anti-backing novel 8-shaped metal plate is provided with the anti-backing screw, and the cap can be clamped after the main screw is locked, so that the anti-backing capability is improved; in addition, in the growth process of children, the opening angle between the main screws is gradually changed, so that the friction stress between the nail-withdrawal-preventing tail cap and the nail can be increased, the nail withdrawal in the opening process of the nail is limited, the effective limitation on the growth potential of epiphyseal lines is guaranteed, the purpose of prospective orthopedic surgery is achieved, and the surgical complications are reduced.
The improved adjustable anti-nail-withdrawal novel 8-shaped metal plate provided by the utility model has the advantages that the main screw hole is arranged to be the universal hole, so that the main screw can conveniently have an adjustable space when being implanted, the operation difficulty is favorably reduced, and the stress of the metal plate body is reduced.
The improved adjustable anti-drop novel 8-shaped metal plate provided by the utility model is reasonable in structural design, the attachment property and the angle of the 8-shaped metal plate and a physiological structure can be optimized, the nail can still be properly adjusted to fix a parallel epiphyseal line under the condition that the metal plate is completely attached, and the optimization of an internal fixation effect can be promoted.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic perspective view of an improved adjustable 8-shaped anti-nail-withdrawal metal plate according to an embodiment;
FIG. 2 is a top view of a novel 8-shaped metal plate with an improved adjustable nail withdrawal prevention function according to an embodiment;
FIG. 3 is a side view of a novel 8-shaped metal plate with improved adjustable nail withdrawal prevention according to one embodiment;
FIG. 4 is a cross-sectional view of an embodiment of a novel 8-shaped metal plate with an improved adjustable nail withdrawal prevention function;
FIG. 5 is a rear view of a novel 8-shaped metal plate with improved adjustable nail withdrawal prevention according to one embodiment;
fig. 6 is a schematic perspective view of an anti-back screw according to an embodiment.
FIG. 1-first plate; 2-a transition plate; 21-kirschner wire holes; 3-a second plate; 4-main screw; 41-cap portion; 42-a stem portion; 5-anti-back screw; 51-nail cap; 52-nail rod; 53-grooves; 54-a ductile portion; 55-instrument connecting groove; 56-a cutting portion; 6-screw holes; 7-anti-back screw hole.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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", etc., 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, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment is described with reference to fig. 1 to 6, and an improved adjustable anti-back nail novel 8-shaped metal plate comprises a metal plate body, a main screw 4 and a back-proof screw 5, wherein the metal plate body comprises a first plate 1, a transition plate 2 and a second plate 3, the first plate 1, the transition plate 2 and the second plate 3 are sequentially connected to form the 8-shaped plate, the first plate 1 and the second plate 3 are both provided with a screw hole 6 and a back-proof screw hole 7, the main screw 4 is arranged in the screw hole 6, the back-proof screw 5 is arranged in the back-proof screw hole 7, the main screw 4 comprises a cap portion 41 and a rod portion 42 connected with the cap portion 41, the back-proof screw 5 comprises a screw cap 51 and a screw rod 52, the screw cap 51 is connected with the screw rod 52, the center line of the screw cap 51 does not coincide with the center line of the screw rod 52, the main screw 4 and the back-proof screw 5 are fixed on the metal plate body, and the cap 41 is tightly fitted with the screw cap 51.
The improved adjustable anti-withdrawal novel 8-shaped metal plate is provided with the anti-withdrawal screw 5, the cap part 41 can be clamped after the main screw 4 is locked, and the anti-withdrawal capability is improved; in addition, in the growth process of children, the opening angles among the main screws 4 can increase the friction stress between the nail-withdrawal-preventing tail cap and the nail in the gradual change process, the nail withdrawal is limited in the opening process of the nail, the effective limitation on the growth potential of epiphyseal lines is guaranteed, the purpose of prospective orthopedic surgery is achieved, and the surgical complications are reduced.
8 font metal sheet structure can design for the appearance of anatomical form, accords with child's thighbone distal end and anatomical form, first board 1, transition board 2 with the material of second board 3 can be selected according to actual need, and it is the biocompatibility material, prefers first board 1, transition board 2 with the material that second board 3 adopted is the titanium alloy steel sheet.
The anti-back screw 5 is in threaded fit with the anti-back screw hole 7.
Preferably, the nut 51 of the anti-back screw 5 is circular and has a cutting portion 56 formed on one side thereof.
The screw cap 51 comprises an upper surface, a side surface and a lower surface, the side surface is provided with a groove 53, and after the main screw 4 is fixed with the anti-back screw 5, one side of the cap part 41 is positioned in the groove 53. That is, after the main screw 4 and the setback prevention screw 5 are fixed, the setback prevention screw 5 is overlapped on the main nut cap 41, and the concave groove 53 is tightly fitted to the cap 41 in order to further prevent the setback of the main screw.
The nut 51 is provided with an instrument attachment slot 55 to facilitate the installation of the anti-back screw 5.
In order to avoid withdrawing of the anti-withdrawal screw 5, the anti-withdrawal screw hole 7 is designed into a through hole, the free end of the screw rod 52 is provided with a plastic part 54, after the anti-withdrawal screw 5 is screwed into the anti-withdrawal screw hole 7, the cap part 41 is fixed by the screw cap 51, the plastic part 54 penetrates out of the anti-withdrawal screw hole 7, and the plastic part is deformed into a flanging of the free end of the screw rod 52 by applying pressure to the plastic part and is attached to the surface of the metal plate body, so that the anti-withdrawal screw 5 can be prevented from withdrawing, and the bone tissue cannot be injured. In order to facilitate the deformation of the plastic part 54 with a small force, the plastic part 54 may be designed as a hollow structure. In practical use, the anti-back screw 5 can be arranged on the metal body in advance.
In order to facilitate the main screw 4 to have an adjustable space when being implanted, reduce the operation difficulty and reduce the stress of the metal plate body, the screw hole is a ball-shaped universal screw hole, the main screw 4 is a ball-shaped universal screw, the cap part 41 of the main screw 4 is a ball head, and the rod part 42 of the main screw 4 is a full thread or a half thread. In addition, the arrangement of the ball-shaped universal screw hole and the use of the ball-shaped universal main screw 4 can optimize the attachment and the angle of the 8-shaped metal plate and a physiological structure, and under the condition that the metal plate is completely attached, the main screw 4 can still be properly adjusted to fix the parallel epiphyseal line, so that the optimization of the internal fixation effect can be promoted.
In order to adapt to different fracture types, the transition plate 2 can be designed into an arc-shaped plate or a stepped plate.
The transition plate 2 is provided with a Kirschner wire hole 21, so that the positioning during operation is convenient.
The use method of the improved adjustable anti-nail-withdrawal novel 8-shaped metal plate can be as follows:
the anti-back screw 5 is fixed on the metal plate body in advance, the metal plate body with the anti-back screw 5 is implanted into a required position in a body, the main screw 4 is implanted finally, the inclination angle of the main screw 4 is adjusted as required, the anti-back screw 5 is rotated, and the screw cap 51 of the anti-back screw 5 is tightly matched with the cap part 41 of the main screw 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; while the utility model has been described in detail and with reference to the foregoing embodiments, it will 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a novel 8 word metal sheets of adjustable anti-moving back nail of improvement, a serial communication port, including the metal sheet body, main screw and anti-moving back screw, the metal sheet body includes first board, cross cab apron and second board, first board, cross cab apron and second board and connect gradually and form 8 word shaped plate, all be provided with screw hole and anti-moving back screw hole on first board and the second board, be provided with main screw in the screw hole, be provided with the anti-moving back screw in the anti-moving back screw hole, main screw includes cap portion and the pole portion of being connected with the cap portion, the anti-moving back screw includes nut and nail pole, the nut links to each other with the nail pole, the nut does not coincide with the central line of nail pole, main screw and anti-moving back screw fixation back on the metal sheet body, the cap is close-fitting with the nut.
2. The improved adjustable 8-shaped metal plate for preventing the nail from being withdrawn is characterized in that the withdrawing-proof screw is in threaded fit with the withdrawing-proof screw hole.
3. The improved adjustable 8-shaped metal plate for preventing the nail from being withdrawn as claimed in claim 1, wherein the nail cap is circular and has a cutting portion formed on one side thereof.
4. The improved adjustable 8-shaped metal plate for preventing the nail from being withdrawn as claimed in claim 3, wherein the nail cap comprises an upper surface, a side surface and a lower surface, the side surface is provided with a groove, and after the main screw and the withdrawal-preventing screw are fixed, one side of the cap part is positioned in the groove.
5. The improved adjustable 8-shaped metal plate for preventing the nail from being withdrawn as claimed in claim 2, wherein the screw withdrawal preventing holes are through holes.
6. The improved adjustable anti-backing novel 8-shaped metal plate for the nail according to claim 1, wherein the free end of the nail rod is provided with a plastic part, and the plastic part penetrates out of the anti-backing screw hole.
7. The improved adjustable 8-shaped metal plate for preventing the nail from being withdrawn as claimed in claim 6, wherein the plastic part is a hollow structure.
8. The improved adjustable 8-shaped metal plate for preventing the nail from being withdrawn as claimed in claim 1, wherein the screw hole is a ball-shaped universal screw hole, the main screw is a ball-shaped universal screw, the head of the main screw is a ball head, and the shank of the main screw is a full thread or a half thread.
9. The improved adjustable 8-shaped metal plate for preventing the nail from being withdrawn as claimed in claim 1, wherein the transition plate is an arc-shaped plate or a step-shaped plate.
10. The improved adjustable 8-shaped metal plate for preventing the nail from being withdrawn as claimed in claim 9, wherein the transition plate is provided with a kirschner wire hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120640910.1U CN215425026U (en) | 2021-03-30 | 2021-03-30 | Improved adjustable 8-shaped metal plate capable of preventing nail from being withdrawn |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120640910.1U CN215425026U (en) | 2021-03-30 | 2021-03-30 | Improved adjustable 8-shaped metal plate capable of preventing nail from being withdrawn |
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| CN215425026U true CN215425026U (en) | 2022-01-07 |
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| CN202120640910.1U Active CN215425026U (en) | 2021-03-30 | 2021-03-30 | Improved adjustable 8-shaped metal plate capable of preventing nail from being withdrawn |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023213127A1 (en) * | 2022-05-06 | 2023-11-09 | 杜晓杰 | Eccentric balancing device for epiphyseal growth |
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2021
- 2021-03-30 CN CN202120640910.1U patent/CN215425026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023213127A1 (en) * | 2022-05-06 | 2023-11-09 | 杜晓杰 | Eccentric balancing device for epiphyseal growth |
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