Disclosure of utility model
The utility model aims to provide a tibia osteotomy guide plate, which can flexibly adjust the osteotomy quantity of tibia and enhance the accuracy of osteotomy operation.
In order to achieve the above object, the present utility model provides a tibial osteotomy guide plate, comprising: the guide plate main body can be attached to the tibia, and an osteotomy groove for guiding osteotomy is formed in the guide plate main body;
the thickness direction of baffle main part is run through and is provided with the locating hole, the locating hole is including two at least groups that set up in pairs, multiunit the locating hole is crisscross from top to bottom in the direction of height, the locating hole is pegged graft with the locating nail activity of installing on the tibia, so that the baffle main part can adjust the laminating position on the tibia.
In an alternative embodiment, the guide body comprises a mating surface adapted to the bone surface of the tibia, the mating surface comprising a tibial anterior mating surface adapted to the tibial anterior bone surface on the side and a tibial plateau mating surface adapted to the tibial plateau bone surface on the upper portion of the tibial anterior mating surface.
In an alternative embodiment, a plurality of pressing blocks are arranged on the side wall of the guide plate main body, and each pressing block comprises a circular arc-shaped pressing ring which is arranged in a stacked mode.
In an alternative embodiment, the osteotomy grooves include a horizontal osteotomy groove and a vertical osteotomy groove, both of which include through grooves of a planar cut structure.
In an alternative embodiment, the positioning hole comprises a through hole formed in the wall thickness direction of the guide plate main body and is of a through hole structure, and a positioning hole pipe which penetrates through the positioning hole correspondingly is arranged on the side wall of the guide plate main body.
In an alternative embodiment, the locating pin comprises a straight rod pin fixed on the tibia, and the extending direction of the locating hole pipe is the same as the extending direction of the locating pin.
In an alternative embodiment, the outer diameter of the straight rod nail is smaller than the diameter of the positioning hole, and the guide plate main body is installed on the positioning nail in a pluggable manner through the positioning hole.
In an alternative embodiment, the positioning holes comprise two groups, each group of positioning holes comprises a first positioning hole and a second positioning hole with the same height, the spacing between the two positioning holes in different groups is the same, and the first positioning holes and the second positioning holes on the same side are adjacently arranged and comprise positioning hole pipes staggered up and down.
In an alternative embodiment, a locating block is provided on the side wall of the guide plate body facing the tibia, and the locating block is located opposite to the tibia crest.
In an alternative embodiment, the positioning nails comprise two positioning nails which are arranged in pairs, the distance between the two positioning nails is the same as the distance between each group of positioning holes, and the length of the positioning nails is larger than that of the positioning hole tubes.
According to the tibia osteotomy guide plate, the guide plate main body can be attached to the tibia, the guide plate main body can be pressed after being attached, and the guide plate main body is fixedly attached to the tibia in a pressing mode, so that subsequent osteotomy operation is facilitated.
The bone cutting groove for guiding the bone cutting is arranged on the guide plate main body in a combined mode, so that the bone cutting swing saw can conveniently extend in and cut a part of tibia.
Through the fixed locating nail of pegging graft on the tibia to and the locating hole that runs through the setting in baffle main part thickness direction, can play good positioning action, make the locating hole on the baffle main part pass the locating nail, realize the location laminating of baffle main part in the tibia lateral part.
The positioning holes and the positioning nails are in movable insertion connection, so that the guide plate main body can be inserted and pulled relative to the positioning nails, and conditions are created for adjusting the position of the guide plate main body on the tibia.
The locating holes comprise at least two groups which are arranged in pairs, and a plurality of groups of locating holes are staggered up and down in the height direction, and the joint positions of the locating holes and the locating nails can be adjusted by combining the movable insertion connection of the locating holes and the locating nails.
The guide plate main body is fixedly attached to the tibia through one group of positioning holes, and can be fixedly attached to the tibia through the other group of positioning holes on the premise that the requirement of the osteotomy is not met, and then osteotomy is carried out after the attachment position of the guide plate main body on the tibia and the osteotomy position of the osteotomy groove relative to the tibia are adjusted, so that the osteotomy quantity of the tibia is flexibly increased.
According to the tibia osteotomy guide plate, osteotomy parameters can be flexibly adjusted according to actual conditions of each patient, when the osteotomy thickness of the tibia is insufficient, the relative position of the guide plate main body and the tibia can be changed, and osteotomy is performed again after the corresponding osteotomy position of the osteotomy groove is adjusted and changed, so that the osteotomy quantity of the tibia can be flexibly adjusted, and the fixed position relation of different groups of positioning holes can be combined, and the accuracy and the flexibility of osteotomy operation are enhanced.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put in use of the product of this application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-3, and referring to fig. 4-5, the tibial osteotomy guide plate in the utility model is mainly used for osteotomy of a partial area at the top of a tibia 7, specifically, by arranging a plurality of groups of positioning holes 4 with different positions, and combining the positioning nails 2 fixedly inserted on the tibia 7 and the form that the positioning nails 2 can be movably inserted with the positioning holes 4, the fitting position of the guide plate main body 1 relative to the tibia 7 can be adjusted in the osteotomy process, so that the osteotomy quantity can be flexibly adjusted.
The tibia osteotomy guide plate comprises a guide plate main body 1 which can be attached to tibia 7, and is specifically fixed by arranging attaching surfaces matched with different parts of tibia 7 and combining pressing blocks 5. The osteotomy swing saw is inserted into the osteotomy groove 3 by the osteotomy groove 3 for guiding osteotomy provided in the guide body 1, and then osteotomy is performed.
The adjustment of the fitting position of the guide plate main body 1 relative to the tibia 7 is performed through a plurality of groups of positioning holes 4 included in the guide plate main body 1 and positioning nails 2 fixedly inserted on the tibia 7.
Specifically, the positioning holes 4 are penetrating through the thickness direction of the guide plate main body 1, and include at least two groups of positioning holes 4 arranged in pairs, wherein the heights of the two positioning holes 4 in each group of positioning holes 4 are the same, and the intervals between the two positioning holes 4 are also the same.
By arranging the plurality of sets of positioning holes 4 in a staggered manner up and down in the height direction, the positions among the plurality of sets of positioning holes 4 can be kept in different states, that is, the positions of each set of positioning holes 4 in the horizontal direction and in the height direction are different.
The positioning holes 4 are in movable plug-in matched relation with the positioning nails 2, in the osteotomy process, the positioning nails 2 penetrate through one group of positioning holes 4 at first, the positioning nails 2 are fixedly plugged on the tibia 7, in the state that the osteotomy quantity does not meet the requirement, the guide plate main body 1 is pulled away from the positioning nails 2 through the movable plug-in matched relation of the positioning holes 4 and the positioning nails 2, then the next group of positioning holes 4 are replaced, and based on the fact that the distance between the two positioning holes 4 in each group of positioning holes 4 is the same, the guide plate main body 1 penetrates through the initially anchored positioning nails 2 through the next group of positioning holes 4, the position of the guide plate main body 1 relative to the tibia 7 is adjusted, and then the osteotomy quantity is adjusted.
Through the staggered up and down of multiunit locating hole 4 in the direction of height, combine locating hole 4 and the cooperation relation of locating nail 2 activity grafting, make baffle main part 1 can adjust the relative laminating position on tibia 7 to can nimble adjustment cut bone groove 3 relatively pass through the position, in order to realize cutting the convenient adjustment of bone volume.
In one specific embodiment, the guide plate body 1 comprises a fitting surface which can be matched with the bone surface of the tibia 7, and the reliability of fitting and fixing of the guide plate body 1 and the tibia 7 can be enhanced by the fitting surface arranged on the guide plate body 1.
Specifically, the abutment surfaces include a tibial anterior abutment surface 11 on the side portion that is adapted to the anterior bone surface of the tibia 7, and a tibial plateau abutment surface 12 on the upper portion of the tibial anterior abutment surface 11 that is adapted to the plateau bone surface of the tibia 7.
Through tibia front side laminating face 11 and tibia platform laminating face 12, can make baffle main part 1 laminate on tibia 7 effectively, combine a plurality of presses briquetting 5 that set up on the lateral wall of baffle main part 1, can realize that baffle main part 1 presses the laminating fixedly on tibia 7 when cutting the bone, can prevent the slippage of baffle main part 1 on tibia 7 simultaneously, do benefit to the stability and the reliability that strengthen the osteotomy operation.
Each pressing block 5 comprises circular arc-shaped pressing rings which are arranged in a laminated mode, and the pressing effect of the guide plate main body 1 on the tibia 7 can be guaranteed through friction force between the palm and the pressing rings.
The osteotomy groove 3 comprises the horizontal osteotomy groove 31 and the vertical osteotomy groove 32, and the horizontal osteotomy groove 31 and the vertical osteotomy groove 32 comprise through grooves with flat cut structures, so that the osteotomy swing saw can conveniently extend in, and the osteotomy operation can be completed in a side swing mode.
In one specific embodiment, the positioning hole 4 comprises a through hole formed in the wall thickness direction of the guide plate main body 1, and has a through hole structure, so that the positioning hole can be conveniently matched with the positioning nail 2 in a movable inserting manner.
Based on the anchoring effect that the positioning nail 2 can play on the tibia 7, the guide plate main body 1 can be connected to the positioning nail 2 in a drawing and inserting mode through the positioning hole 4, and the position adjustment of the joint part with the tibia 7 is achieved.
In order to enable the guide plate main body 1 to be installed on the positioning nails 2 relatively stably, positioning hole pipes 6 penetrating through the positioning holes 4 are arranged on the side walls of the guide plate main body 1, and through the arrangement mode, the parts, exposed out of the tibia 7, of the positioning nails 2 can penetrate through the positioning holes 4 and the positioning hole pipes 6, the lap joint range of the guide plate main body 1 on the positioning nails 2 is enlarged, and the stable and reliable degree of installation of the guide plate main body 1 on the positioning nails 2 is guaranteed.
Based on the fact that the positioning hole 4 is in the form of a through hole, in order to ensure the movable plug-in matching form between the positioning hole 4 and the positioning nail 2, the positioning nail 2 comprises a straight rod nail capable of being fixed on the tibia 7, and further, the extending direction of the positioning hole tube 6 is the same as that of the positioning nail 2, so that the combination and the separation between the positioning hole 4 and the positioning nail 2 can be facilitated.
Preferably, the external diameter of the straight rod nail is smaller than the diameter of the positioning hole 4, and further, the positioning nail 2 is in the form of a straight rod nail with a polished rod structure, the external diameter of the straight rod nail is smaller than the aperture of the positioning hole 4, and the guide plate main body 1 can be conveniently inserted into and pulled out from the positioning nail 2 through the positioning hole 4.
In another preferred embodiment, the positioning holes 4 in the present utility model comprise two groups of vertically staggered positioning holes 4, wherein the two groups of positioning holes 4 respectively comprise a first positioning hole 41 and a second positioning hole 42 with the same height, and the positioning nail 2 comprises a first positioning nail 21 and a second positioning nail 22 respectively corresponding to the first positioning hole 41 and the second positioning hole 42. Before primary osteotomy, the guide plate main body 1 is pressed and attached to the tibia 7 through the attaching surface and the pressing block 5, then the first positioning nail 21 passes through the first positioning hole 41, and the second positioning nail 22 passes through the second positioning hole 42, so that the positioning anchor of the positioning nail 2 on the tibia 7 is realized.
In the state of pressing, attaching and fixing, the bone cutting operation is carried out through the bone cutting groove 3 and the bone cutting pendulum saw on the guide plate main body 1, when the bone cutting quantity does not meet the requirement, the guide plate main body 1 is pulled away in the state that the first positioning nail 21 and the second positioning nail 22 are anchored on the tibia 7, after the positions are adjusted, the other group of the first positioning holes 41 and the second positioning holes 42 are respectively opposite to the positions of the first positioning nail 21 and the second positioning nail 22, the guide plate main body 1 is attached and fixed on the tibia 7 again, and the bone cutting quantity is loaded until the requirement of the bone cutting quantity is met.
In the positioning holes in different groups, the spacing between the two positioning holes is the same. And the first positioning holes 41 and the second positioning holes 42 with different groups of positioning holes positioned on the same side are adjacently arranged, and the positioning holes comprise positioning hole pipes 6 which are staggered up and down, so that the operation is convenient, and the structure of hole sites with different groups is simplified.
The guide plate main body 1 is provided with the locating block 13 on the lateral wall facing the tibia 7, the position of the locating block 13 is opposite to the position of the tibia 7 ridge, good guiding and positioning can be achieved in the attaching and fixing process of the guide plate main body 1, and the attaching and fixing position of the guide plate can be guided rapidly.
The locating nails 2 comprise two locating nails which are arranged in pairs, the distance between the two locating nails 2 is the same as the distance between each group of locating holes 4, the insertion connection between the locating holes 4 and the locating nails 2 in different groups can be facilitated, the length of the locating nail 2 is larger than that of the locating hole pipe 6, the locating nails 2 can extend out of the locating hole pipe 6 completely, and therefore the locating nails 2 can play a role in locating and supporting the guide plate main body 1.
The horizontal distance between the positioning holes 4 of different groups determines the displacement adjustment distance of the guide plate main body 1 relative to the tibia 7, in this embodiment, the horizontal distance between the two groups of positioning holes 4 is 2mm, so that the tibia 7 can be horizontally sectioned by 2mm, and in specific use, the sectioned amount of the tibia 7 can be controlled by adjusting the distance between the two groups of positioning holes 4.
The tibia osteotomy guide plate provides personalized accurate osteotomy, has the function of adjusting the osteotomy position, meets the requirement of adding osteotomy amount possibly appearing clinically, can avoid bare-handed operation of doctors, reduces clinical construction, is simple and practical, can greatly shorten the learning curve of doctors, and improves the operation efficiency on the premise of enhancing the osteotomy accuracy.
It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.