CN217472016U - Intercondylar osteotomy guider and orthopedic surgical instrument - Google Patents

Abstract

The utility model provides a cut bone director and bone surgery apparatus between condyle, bone surgery apparatus include cut bone director and condyle between the condyle and cut the hone lamella, cut the location structure detachably of bone director between the condyle and set up on cutting the hone lamella between the condyle to cut the bone plate and inject the formation jointly between the condyle and cut the bone guide way, cut the locking structure detachably connection location structure of bone director between the condyle, cut the hone lamella between locking location structure and condyle. The utility model discloses can utilize and cut the direction that the bone instrument was cut in the restriction of bone guide way, reduce and cut the deviation of bone instrument at the in-process of cutting the bone, ensure the stability and the accurate nature of cutting the bone.

Description

Intercondylar osteotomy guider and orthopedic surgical instrument

Technical Field

The utility model relates to the technical field of orthopedic medical instruments, in particular to an intercondylar osteotomy guider and an orthopedic surgical instrument for total knee joint replacement.

Background

Femoral condyle prosthetic replacements are an extremely important component of total knee arthroplasty. When a doctor selects a prosthesis with the size of the femoral head corresponding to a patient, the doctor cuts the bone by using a bone cutting plate with the corresponding size. When the distal femur osteotomy is processed, the intercondylar osteotomy is an extremely important link, and when the intercondylar osteotomy is performed, a doctor performs the osteotomy operation by using the intercondylar osteotomy plate. At present, when the intercondylar osteotomy plate is used, the intercondylar osteotomy plate is installed firstly, and the oscillating saw cuts a bone downwards along the edge of a middle gap of the intercondylar osteotomy plate. However, when the oscillating saw is used, the direction of the oscillating saw is not completely limited by the intercondylar osteotomy plate, so that the oscillation generated in the osteotomy process can cause the oscillating saw to generate deviation in osteotomy, which causes inaccurate osteotomy, leads to unstable osteotomy amount, seriously affects the operation effect and the stability of the later prosthesis, and further causes the risk of loosening and falling of the prosthesis.

Accordingly, there is a need for an intercondylar osteotomy guide and an orthopedic surgical instrument that avoid misalignment of the osteotomy tool during the osteotomy procedure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cut bone director and bone surgery apparatus between condyle to solve the present problem that cut the bone that the bone plate exists between condyle and cut the bone not accurate.

In order to achieve the above object, the utility model provides an intercondylar osteotomy guider, which comprises a locking structure and a positioning structure; the positioning structure is used for being detachably arranged on the intercondylar osteotomy plate and defines an osteotomy guide groove together with the intercondylar osteotomy plate; the locking structure is configured to removably couple the locating structure to lock the locating structure and the intercondylar osteotomy plate.

Optionally, the positioning structure has a positioning groove for fitting on a side wall of the intercondylar osteotomy plate;

the positioning groove is provided with two opposite side walls, and the side retaining wall is provided with an opposite outer side surface and an opposite inner side surface; one side wall of the positioning groove is used for being attached to the outer side face of the side retaining wall, at least part of the other side wall is used for forming a gap with the inner side face of the side retaining wall, and the gap forms the osteotomy guide groove.

Optionally, the positioning structure comprises an osteotomy guide plate having the positioning slot enclosed therein; the locking structure comprises a movable positioning block and a locking piece; the osteotomy guide plate is slidably connected with the movable positioning block; the sliding direction of the osteotomy guide plate is perpendicular to the osteotomy direction; the movable positioning block is used for being detachably and fixedly connected with the intercondylar osteotomy plate; the locking piece is used for locking the osteotomy guide plate and the movable positioning block.

Optionally, the osteotomy guide plate further has a protrusion extending beyond the positioning slot, and the movable positioning block is provided with a groove slidably connected with the protrusion.

Optionally, a sliding groove is formed in the protruding portion, and a limit pin matched with the sliding groove is arranged in the groove.

Optionally, the locking element includes a cam structure and a handle for driving the cam structure to rotate, the handle is fixedly connected with the cam structure, the cam structure is rotatably connected with the movable positioning block, and the cam structure is used for pressing against the osteotomy guide plate to lock the osteotomy guide plate on the movable positioning block; or the locking piece comprises a locking stud and a locking nut, the locking stud is used for penetrating through the movable positioning block and is in threaded connection with the osteotomy guide plate, and the locking nut is in threaded connection with the locking stud.

Optionally, a through hole is provided on the movable positioning block, the locking stud is inserted into the through hole, and the through hole is sized to allow the locking stud to move relative to the movable positioning block along the sliding direction of the osteotomy guide plate.

Optionally, the positioning structure comprises a first osteotomy guide plate and a second osteotomy guide plate arranged oppositely, a gap is formed between the first osteotomy guide plate and the second osteotomy guide plate, and the gap constitutes the positioning slot; all of the side wall of the positioning groove is used for being attached to the outer side face of the side retaining wall, one part of the other opposite side wall is used for forming a gap with one part of the inner side face of the side retaining wall, the rest of the other opposite side wall is used for being attached to the rest of the inner side face of the side retaining wall, and the gap forms the osteotomy guide groove;

the locking mechanism includes a lock for coupling the first osteotomy guide plate and the second osteotomy guide plate and causing the first osteotomy guide plate and the second osteotomy guide plate to cooperatively retain the intercondylar osteotomy plate.

Optionally, the first osteotomy guide plate is attached to the outer side surface of the side retaining wall, and the second osteotomy guide plate is arranged on the inner side of the side retaining wall;

the locking piece comprises a cam structure and a handle driving the cam structure to rotate, and the handle is fixedly connected with the cam structure; the second osteotomy guide plate having a projection rotatably coupled with the cam structure through the first osteotomy guide plate; the cam structure is used for driving the second bone cutting guide plate to move towards the direction of the first bone cutting guide plate so as to clamp the side retaining wall.

In order to achieve the above object, the present invention also provides an orthopedic surgical instrument, which comprises an intercondylar osteotomy plate and any one of the intercondylar osteotomy guides detachably disposed on the intercondylar osteotomy plate.

The utility model provides an intercondylar cuts bone director and bone surgery apparatus has following advantage:

utilize the intercondylar to cut the location structure on the bone director and cut the bone plate between the condyle and go up from the structure cooperation of taking, inject jointly and form and cut the bone guide way for cut the bone instrument and pass and cut the bone guide way and cut the bone, and at the in-process of cutting the bone, utilize and cut the restriction of bone guide way to cutting the bone instrument direction, make and cut the bone instrument and can not produce the deviation because of vibrations at the in-process of cutting the bone, thereby ensure the stability and the accurate nature of cutting the bone, guarantee the stability of operation effect and later stage false body.

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 description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded view of an intercondylar osteotomy guide according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the assembled intercondylar osteotomy guide and intercondylar osteotomy plate according to the first embodiment of the present invention;

FIG. 3a is a view of the intercondylar osteotomy guide of the first embodiment of the present invention shown in a separated state from the intercondylar osteotomy plate;

FIG. 3b is a view of the intercondylar osteotomy guide of the first embodiment of the present invention in a state in which the osteotomy tool is to be used after the intercondylar osteotomy plate is coupled thereto;

FIG. 3c is a view showing the state of the osteotomy tool moving within the osteotomy guide slot after the intercondylar osteotomy guide of the first embodiment of the present invention is coupled to the intercondylar osteotomy plate;

fig. 4 is an exploded view of the intercondylar osteotomy guide of embodiment two of the present invention;

fig. 5 is a schematic structural view of the intercondylar osteotomy guide of the second embodiment of the present invention assembled with the intercondylar osteotomy plate;

fig. 6 is an exploded view of the intercondylar osteotomy guide of the third embodiment of the present invention;

fig. 7 is an assembly structure view of the intercondylar osteotomy guide of the third embodiment of the present invention;

fig. 8 is a schematic structural view of the intercondylar osteotomy guide of the third embodiment of the present invention assembled with the intercondylar osteotomy plate;

FIG. 9a is a schematic view of a third embodiment of the present invention showing the intercondylar osteotomy guide separated from the intercondylar osteotomy plate;

FIG. 9b is a view of the intercondylar osteotomy guide of the third embodiment of the present invention in a state attached to the intercondylar osteotomy plate;

FIG. 9c is a view of the third embodiment of the present invention showing the intercondylar osteotomy guide engaged with the intercondylar osteotomy plate and with an osteotomy tool in place;

fig. 9d is a state view of the intercondylar osteotomy guide of the third embodiment of the present invention connected to the intercondylar osteotomy plate, with the osteotomy tool being moved within the osteotomy guide slot.

[ reference symbols are explained below ]:

10. 50-an intercondylar osteotomy guide; 20-intercondylar osteotomy plate; 40-a bone-cutting tool; 30. 60-osteotomy guide grooves; 101-locking knob; 102-a rotation pin; 103-movable positioning blocks; 104-a limit pin; 105-osteotomy guide plate; 106-locking stud; 107-lock nut; 1011-cam configuration; 1012-a handle; 1031-grooves; 1051-a positioning groove; 1052-an insertion portion; 1053-a protruding portion; 1054-a sliding groove; 1055-threaded connection holes; 21-a notch; 211-front retaining wall; 212-side retaining wall; 501-locking a knob; 502-a first osteotomy guide plate; 503-a second osteotomy guide plate; 5031-protruding portion; 5021-avoiding hole.

Detailed Description

In order to make the contents of the present invention clearer and more understandable, the present invention is further explained with reference to the drawings of the specification. Of course, the invention is not limited to this specific embodiment, and general alternatives known to those skilled in the art are also covered by the scope of the invention. Next, the present invention is described in detail by using schematic diagrams, but these schematic diagrams are only for convenience of explaining the preferred embodiment of the present invention, and should not be taken as limitations of the present invention.

Furthermore, each embodiment described below has one or more technical features, which does not mean that all technical features of any embodiment need to be implemented simultaneously by a person using the present invention, or that all technical features of different embodiments can be implemented separately. In other words, in the implementation of the present invention, based on the disclosure, and depending on design specifications or actual requirements, a person skilled in the art can selectively implement some or all of the technical features of any embodiment, or selectively implement a combination of some or all of the technical features of a plurality of embodiments, thereby increasing the flexibility in implementing the present invention. As used in this specification, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise.

As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise. As used in this specification, the term "plurality" means an indefinite amount unless the content clearly dictates otherwise. As used in this specification, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any significant order among or between indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or at least two of the feature. As used herein, "medial side" refers to the side adjacent to the osteotomy tool; "lateral side" refers to the side away from the osteotomy tool.

The core idea of the utility model lies in providing a bone cutting guider between condyles, which is adapted to the bone cutting plate between condyles. The intercondylar osteotomy guide comprises a locking structure and a positioning structure; the positioning structure is used for being detachably arranged on the intercondylar osteotomy plate and is used for forming an osteotomy guide groove together with the intercondylar osteotomy plate; the locking structure is configured to removably couple the positioning structure to lock the positioning structure and the intercondylar osteotomy plate. During the use, cut the bone instrument and pass cut the bone guide way and cut the bone to at the bone in-process of cutting, utilize and cut the bone guide way restriction and cut the direction of bone instrument, make and cut the bone instrument and can not produce the deviation because of vibrations at the bone in-process of cutting, ensure the stability and the accurate nature of cutting the bone, guarantee the stability of operation effect and later stage false body. Further, the osteotomy tool includes, but is not limited to, an oscillating saw.

It should be understood that some existing intercondylar osteotomy plates do not have an osteotomy slot, but have a U-shaped notch at a middle position, and an osteotomy tool such as an oscillating saw cuts a bone downwards along a middle edge of the U-shaped notch without any stop at the other opposite side of the osteotomy tool, so that the osteotomy tool is easy to shake forwards and backwards, and the stability of the osteotomy is difficult to ensure. In addition, some intercondylar osteotomy plates with no osteotomy groove are mainly used in the market at present because the middle groove can cause the problem of incomplete bilateral osteotomy. And the utility model provides an it cuts bone guide ware mainly adaptation between condyle does not take the intercondylar of cutting bone groove and cuts the bone board, and after cutting the bone instrument and cut first sword, as long as take off the intercondylar and cut bone guide ware between the condyle from cutting the bone board between the condyle, cut bone board between the condyle and do not influence the cutting bone of second sword and third sword at the back, consequently ensured that the intercondylar cuts the middle side of bone board and the complete cutting bone of both sides.

In specific implementation, the positioning structure can be provided with a positioning groove, and the positioning groove is used for being sleeved on the side retaining wall of the intercondylar osteotomy plate. In addition, the positioning groove is provided with two opposite side walls, and the side retaining walls are provided with opposite outer side faces and inner side faces; one side wall of constant head tank be used for with the lateral surface laminating of side barricade, another lateral wall at least part be used for with the medial surface of side barricade forms the clearance, the clearance is as cutting bone guide way use promptly. The locating slot can be of a structure with the periphery closed, or can be of a structure with an opening, so long as two opposite side walls of the locating slot are guaranteed to be blocked at two opposite sides of the osteotomy tool.

The present invention provides an intercondylar osteotomy guide, which is further described below with reference to the drawings and preferred embodiments. In the following embodiments, features of the embodiments can be supplemented with each other or combined with each other without conflict.

Example one

Referring to fig. 1 and 2, in the present embodiment an intercondylar resection guide 10 is provided in which the intercondylar resection guide 10 is detachably connectable to an intercondylar resection plate 20. When the intercondylar resection guide 10 is coupled to the intercondylar resection plate 20, the two can cooperate to form a resection guide slot 30. The osteotomy guiding groove 30 is used for inserting the osteotomy tool 40 for osteotomy, and the osteotomy guiding groove 30 has gears on the opposite sides of the osteotomy tool 40, so that the direction of the osteotomy tool 40 can be limited, deviation of the osteotomy tool 40 in the osteotomy process is prevented, and the osteotomy precision is ensured. In addition, when the intercondylar resection guide 10 is separated from the intercondylar resection plate 20, the intercondylar resection plate 20 can continue to be used for subsequent resection procedures.

In a specific embodiment, referring to fig. 2 and fig. 3a, the U-shaped notch 21 is disposed in the middle of the intercondylar osteotomy plate 20, the U-shaped notch 21 has a side wall, the side wall includes a front side wall 211 and two oppositely disposed side walls 212, one side of the side wall facing the U-shaped notch 21 is an inner side, and one side of the side wall facing away from the U-shaped notch 21 is an outer side. The locating feature in the intercondylar osteotomy guide 10, when in locating engagement with the U-shaped notch 21, defines an osteotomy guide slot 30.

As an example, referring to fig. 3b to 3c, after the osteotomy guide 30 is created, the osteotomy tool 40 is aligned and inserted into the osteotomy guide 30, and the osteotomy tool 40 may move up and down within the osteotomy guide 30 to perform an osteotomy operation. For example, the osteotomy tool 40 osteotomies downwardly along the medial surface of the anterior wall 211 within the osteotomy guide channel 30 and completes a first osteotomy; then, the intercondylar osteotomy guide 10 is withdrawn, and only the intercondylar osteotomy plate 20 is left for osteotomy, at which time the osteotomy tool 40 cuts down the medial surface of the lateral retaining wall 212, successively completing the second and third blade osteotomies. Thus, after withdrawal of the intercondylar osteotomy guide 10, the bilateral osteotomies are unaffected and the integrity of the bilateral osteotomies is assured.

Referring back to fig. 1 and 2, the locking structure in the intercondylar osteotomy guide 10 includes a locking knob 101 and a movable locating block 103, wherein the locking knob 101 constitutes a locking element; the positioning structure of the intercondylar osteotomy guide 10 includes an osteotomy guide plate 105, the osteotomy guide plate 105 having a closed positioning slot 1051, specifically, the positioning slot 1051 is axially (i.e., in the direction of osteotomy) hollowed out, and circumferentially closed, e.g., in fig. 3a, hollowed out, up and down, and closed all around. The positioning slot 1051 may be disposed in the side wall of the U-shaped notch 21 of the intercondylar osteotomy plate 20 and cooperate with the side wall to form the osteotomy guide slot 30. The shape of the positioning groove 1051 is set according to the shape of the side wall. In the specific installation, one side wall of the positioning groove 1051 is attached to the outer side surface of the front retaining wall 211, and the other side wall of the positioning groove 1051 forms a gap with the inner side surface of the front retaining wall 211, and the gap is used as the osteotomy guiding groove 30.

In addition, the locking knob 101 is rotatably coupled to the movable locating block 103 to lock the fixed movable locating block 103 and the osteotomy guide plate 105 such that the osteotomy guide plate 105 and the movable locating block 103 remain relatively stationary, thereby defining the position of the osteotomy guide plate 105 relative to the intercondylar osteotomy plate 20. The movable positioning block 103 is used for slidably connecting with the osteotomy guide plate 105 so as to adjust the position of the osteotomy guide plate 105 and the movable positioning block 103 on the intercondylar osteotomy plate 20 to adapt to different intercondylar osteotomy plates 20, thereby achieving the purpose of universality. The sliding direction of the osteotomy guide plate 105 is perpendicular to the osteotomy direction. The configuration of the osteotomy guide plate 105 is adapted to the configuration of the intercondylar osteotomy plate 20 selected so that the osteotomy guide plate 105 is configured according to the size and shape of the intercondylar osteotomy plate 20. After the osteotomy guide plate 105 and/or the movable positioning block 103 are adjusted to the proper position, the locking knob 101 is used to lock and fix the movable positioning block 103 and the osteotomy guide plate 105, and the movable positioning block 103 is also used to detachably and fixedly connect with the intercondylar osteotomy plate 20, so as to lock and fix the movable positioning block 103 and the intercondylar osteotomy plate 20. Generally, the movable positioning block 103 and the intercondylar osteotomy plate 20 are locked and fixed by screws.

After applying the intercondylar osteotomy guider 10 provided by the first embodiment, the problem that the existing intercondylar osteotomy plate cannot provide accurate osteotomy guide, so that the osteotomy is unstable is solved. Moreover, the intercondylar osteotomy guide 10 of the embodiment has strong universality, can be compatible with intercondylar osteotomy plates 20 with different models and sizes, thereby quickly establishing and adjusting the osteotomy guide groove 30 through the intercondylar osteotomy guide 10, and has simple structure and convenient osteotomy operation.

Referring to fig. 1, the osteotomy guide plate 105 also has an insertion portion 1052 that is insertable into the U-shaped notch 21 to further position the osteotomy guide plate 105. Further, the osteotomy guide plate 105 further has a protrusion 1053 connected to the insertion portion 1052, the protrusion 1053 extending beyond the positioning slot 1051, and the extending direction of the protrusion 1053 is the sliding direction of the osteotomy guide plate 105. The protruding portion 1053 may be provided with a sliding groove 1054. The sliding groove 1054 can limit not only the sliding direction of the osteotomy guide plate 105, but also the limit position of the osteotomy guide plate 105 during sliding.

In a specific embodiment, the movable positioning block 103 has a groove 1031 slidably engaged with the protrusion 1053, and the groove 1031 can guide the sliding direction of the osteotomy guide plate 105. Furthermore, the movable positioning block 103 is provided with a limit pin 104 slidably engaged with the sliding groove 1054, and the sliding position of the osteotomy guide plate 105 is limited by the limit pin 104.

As an example, as shown in fig. 3a, screw holes (the position indicated by reference sign a) are provided on both the movable positioning block 103 and the intercondylar osteotomy plate 20, and the screw holes on the movable positioning block 103 and the screw holes on the intercondylar osteotomy plate 20 are correspondingly provided, so that the movable positioning block 103 and the intercondylar osteotomy plate 20 are locked and fixed by using screws at one time, and when disassembly is required, the screws are screwed off.

As an example, as shown in fig. 1, the locking knob 101 includes a cam structure 1011 and a handle 1012 fixedly connected to the cam structure 1011, and preferably, the cam structure 1011 is integrally formed with the handle 1012. The osteotomy guide plate 105 can be locked or unlocked by manually rotating the handle 1012 to drive the cam structure 1011 to rotate. The cam structure 1011 is used for pressing against the assembled position of the osteotomy guiding plate 105 and the movable positioning block 103, thereby locking the osteotomy guiding plate 105 and the movable positioning block 103. Specifically, the cam structure 1011 is rotatably connected to the movable positioning block 103 via the rotating pin 102.

The working principle of the intercondylar osteotomy guide 10 of the present embodiment is described next in connection with the preferred embodiment. Referring again to fig. 3 a-3 c, the intercondylar resection guide 10 is mounted on the intercondylar resection plate 20 and the resection guide plate 105 is adjusted into position. After the position of the osteotomy guide 105 is adjusted, the locking knob 101 is pressed downward to press the cam structure 1011 against the position where the osteotomy guide 105 and the movable positioning block 103 are assembled, thereby locking the osteotomy guide 105 and the movable positioning block 103. At this point, the intercondylar osteotomy guide 10 has been installed on the intercondylar osteotomy plate 20. In performing the intercondylar osteotomy, screws are driven into the screw holes of the intercondylar osteotomy guide 10 and the intercondylar osteotomy plate 20 to ensure that the two do not shift. The intercondylar osteotomy guide 10 and the intercondylar osteotomy plate 20 are at the osteotomy guide slot 30, and the osteotomy guide slot 30 limits the offset of the osteotomy tool 40 (e.g., an oscillating saw) to ensure accurate osteotomy.

Example two

The main difference between the second embodiment and the first embodiment is that the locking member of the present embodiment includes a locking stud 106 and a locking nut 107 instead of the locking knob 101 of the first embodiment, and specifically refer to fig. 4 and 5. The following description is only for differences from the first embodiment, and the same points can be referred to the first embodiment.

The locking nut 107 is in threaded connection with the locking stud 106, the osteotomy guide plate 105 is slidably connected with the movable positioning block 103, and the locking stud 106 penetrates through the movable positioning block 103 and is in threaded connection with the osteotomy guide plate 105. In use, the range of motion of osteotomy guide plate 105 may be adjusted by moving locking stud 106. By rotating the locking nut 107 downward, the movable positioning block 103 can be fixed to the osteotomy guide plate 105. It will be appreciated here that the locking stud 106 has some play relative to the movable locating block 103, thereby allowing the locking stud 106 to be moved to adjust the range of motion of the osteotomy guide plate 105. If a through hole (not labeled) is provided on the movable positioning block 103, the locking stud 106 is inserted into the through hole, and the size of the through hole is configured to allow the locking stud 106 to move relative to the movable positioning block 103 along the sliding direction of the osteotomy guiding plate 105. As shown in fig. 4, the via hole is a square hole, a rectangular hole, a long-waist-shaped hole, or the like. Of course, the adjustment is not limited to the adjustment by moving the locking stud 106, and a plurality of threaded connection holes 1055 may be provided in the osteotomy guide plate 105, and the locking stud 106 may be selectively connected to one of the plurality of threaded connection holes 1055 to adjust the range of motion of the osteotomy guide plate 105.

EXAMPLE III

Referring to fig. 6-8, in the present embodiment, the intercondylar resection guide 50 is also provided for detachable connection with the intercondylar resection plate 20. When the intercondylar resection guide 50 is coupled to the intercondylar resection plate 20, the two can cooperate to form a resection guide slot 60. The osteotomy guide groove 60 is used for inserting the osteotomy tool 40 for osteotomy, and the osteotomy guide groove 60 is sealed on three sides, so that the direction of the osteotomy tool 40 can be limited, deviation of the osteotomy tool 40 in the osteotomy process is prevented, and the osteotomy accuracy is ensured. In addition, when the intercondylar resection guide 50 is separated from the intercondylar resection plate 20, the intercondylar resection plate 20 can continue to be used for subsequent resection procedures.

For the sake of brevity, the structure of the intercondylar osteotomy plate 20 will not be described in detail, and reference may be made specifically to the description of the first embodiment above.

Unlike the first or second embodiments described above, the locking structure in the intercondylar resection guide 50 of this embodiment includes a locking knob 501, the locking knob 501 acts as a lock, and the positioning structure in the intercondylar resection guide 50 includes a first resection guide plate 502 and a second resection guide plate 503. The first osteotomy guide plate 502 and the second osteotomy guide plate 503 are configured to be disposed opposite to each other with a space therebetween, the space forming a positioning slot, the positioning slot being configured to nest the positioning structure on the side wall of the intercondylar osteotomy plate 20, and defining the osteotomy guide slot 60 with the side wall. At least one side of the osteotomy guide slot 60 of the present embodiment is open.

In addition, all of one side wall of the positioning groove is used for being attached to the outer side surface of the side retaining wall, one part of the other opposite side wall is used for forming a gap with one part of the inner side surface of the side retaining wall, and the rest of the other opposite side wall is used for being attached to the rest of the inner side surface of the side retaining wall, and at the moment, the gap is used as the osteotomy guide groove 60. In addition, the locking knob 501 is used for the first osteotomy guide plate 502 and the second osteotomy guide plate 503, and enables the first osteotomy guide plate 502 and the second osteotomy guide plate 503 to jointly clamp the lateral wall of the intercondylar osteotomy plate 20, thereby achieving locking fixation of the intercondylar osteotomy guide 50 and the intercondylar osteotomy plate 20.

In one embodiment, the first bone cutting guide plate 502 is attached to the outer side of the side wall, the second bone cutting guide plate 503 is disposed on the inner side of the side wall, and a part of the second bone cutting guide plate 503 forms a gap with the front side wall 211, and the other part of the second bone cutting guide plate is driven by the locking knob 501 to clamp the side wall 212.

In one embodiment, the locking knob 501 is rotatably coupled to the second osteotomy guide plate 503. Referring to fig. 6 and 7, the second osteotomy guide plate 503 and the locking knob 501 are rotatably coupled by a rotation pin 504. The locking knob 501 specifically comprises a cam structure and a handle for driving the cam structure to rotate, wherein the handle is fixedly connected with the cam structure, and the handle and the cam structure are usually integrally formed. And the second osteotomy guide plate 503 has a protrusion 5031, the protrusion 5031 is rotatably coupled to the cam structure after passing through the relief hole 5021 of the first osteotomy guide plate 502. The cam structure is used for driving the second osteotomy guiding plate 503 to move towards the first osteotomy guiding plate 502 to clamp the lateral retaining wall 212.

However, the locking member of this embodiment is not limited to the locking knob 501, and may be a locking stud threadedly coupled to the first osteotomy guide plate 502 and the second osteotomy guide plate 503, and a locking nut threadedly coupled to the locking stud to clamp and fix the two osteotomy guide plates to the lateral retaining wall.

The working principle of the intercondylar osteotomy guide 50 of this embodiment is described next in connection with the preferred embodiment. Referring to fig. 9 a-9 d, the intercondylar resection guide 50 is mounted on the intercondylar resection plate 20 by first placing the portion of the first resection guide plate 502 having the gap between the second resection guide plate 503 on the side wall of the intercondylar resection plate 20 and then turning the locking knob 501. At this time, the cam structure of the locking knob 501 drives the second osteotomy guide plate 503 to move inward, thereby clamping the lateral side of the second osteotomy guide plate 503. The intercondylar osteotomy guide 50 and the intercondylar osteotomy plate 20 are at the osteotomy guide slot 60, and the osteotomy guide slot 60 limits the offset of the osteotomy tool 40, thereby ensuring the accuracy of the osteotomy.

Example four

The present embodiment also provides an orthopedic surgical instrument including an intercondylar osteotomy plate 20 and the intercondylar osteotomy guide of any of the embodiments removably positionable on the intercondylar osteotomy plate 20. This bone surgery apparatus accessible is cut bone plate 20 and is cut the cooperation of bone director between the condyle and form and cut the bone guide way between the condyle, carries out accurate direction for cutting the bone of bone instrument, guarantees to cut accurate nature and the stability of bone.

It should be understood that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form or in any material, such as the present invention does not limit the locking structure, except for the above-mentioned locking knob and the locking stud cooperating with the locking nut, but also can be a structure that can be disassembled quickly, such as a snap-fit connection.

It should be noted that, for a person skilled in the art, several improvements and additions can be made without departing from the scope of the present invention, and these improvements and additions should also be considered as the protection scope of the present invention. Those skilled in the art can make various changes, modifications and equivalent arrangements to those skilled in the art without departing from the spirit and scope of the present invention, which should be construed as broadly as the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes made to the above embodiments according to the essential technology of the present invention still belong to the scope of the technical solution of the present invention.

Claims (10)

1. An intercondylar osteotomy guider is characterized by comprising a locking structure and a positioning structure; the positioning structure is used for being detachably arranged on the intercondylar osteotomy plate and defines an osteotomy guide groove together with the intercondylar osteotomy plate; the locking structure is configured to removably couple the positioning structure to lock the positioning structure and the intercondylar osteotomy plate.

2. The intercondylar osteotomy guide of claim 1, wherein said positioning structure has a positioning slot for fitting over a side wall of said intercondylar osteotomy plate;

the positioning groove is provided with two opposite side walls, and the side retaining walls are provided with opposite outer side faces and inner side faces; one side wall of the positioning groove is used for being attached to the outer side face of the side retaining wall, at least part of the other side wall is used for forming a gap with the inner side face of the side retaining wall, and the gap forms the osteotomy guide groove.

3. The intercondylar resection guide of claim 2, wherein the positioning structure comprises a resection guide plate having the closed positioning slot; the locking structure comprises a movable positioning block and a locking piece; the osteotomy guide plate is slidably connected with the movable positioning block; the sliding direction of the osteotomy guide plate is perpendicular to the osteotomy direction; the movable positioning block is used for being detachably and fixedly connected with the intercondylar osteotomy plate; the locking piece is used for locking the osteotomy guide plate and the movable positioning block.

4. The intercondylar osteotomy guide of claim 3, wherein said osteotomy guide plate further has a projection extending beyond said positioning slot, said movably positioned block having a recess slidably coupled to said projection.

5. The intercondylar osteotomy guide of claim 4, wherein said projection has a sliding slot therein, said recess having a stop pin disposed therein for engaging said sliding slot.

6. The intercondylar osteotomy guide of claim 3, wherein said lock comprises a cam structure and a handle for rotating said cam structure, said handle fixedly coupled to said cam structure, said cam structure rotatably coupled to said moveable block, said cam structure for pressing against said osteotomy guide plate to lock said osteotomy guide plate to said moveable block; or the locking piece comprises a locking stud and a locking nut, the locking stud is used for penetrating through the movable positioning block and is in threaded connection with the osteotomy guide plate, and the locking nut is in threaded connection with the locking stud.

7. The intercondylar osteotomy guide of claim 6, wherein said movable block is provided with an aperture through which said locking stud is inserted, said aperture sized to allow said locking stud to move relative to said movable block in a sliding direction of said osteotomy guide plate.

8. The intercondylar resection guide of claim 2, wherein the positioning structure includes first and second resection guide plates for relative arrangement, the first and second resection guide plates forming a gap therebetween, the gap constituting the positioning slot; all of the side wall of the positioning groove is used for being attached to the outer side face of the side retaining wall, one part of the other opposite side wall is used for forming a gap with one part of the inner side face of the side retaining wall, the rest of the other opposite side wall is used for being attached to the rest of the inner side face of the side retaining wall, and the gap forms the osteotomy guide groove;

the locking structure includes a lock for coupling the first osteotomy guide plate and the second osteotomy guide plate and for causing the first osteotomy guide plate and the second osteotomy guide plate to cooperatively retain the intercondylar osteotomy plate.

9. The intercondylar osteotomy guide of claim 8, wherein said first osteotomy guide plate is adapted to engage a lateral side of said lateral wall, and said second osteotomy guide plate is adapted to be disposed medial to said lateral wall;

the locking piece comprises a cam structure and a handle driving the cam structure to rotate, and the handle is fixedly connected with the cam structure; the second osteotomy guide plate having a projection rotatably coupled with the cam structure through the first osteotomy guide plate; the cam structure is used for driving the second bone cutting guide plate to move towards the direction of the first bone cutting guide plate so as to clamp the side retaining wall.

10. An orthopedic surgical instrument comprising an intercondylar osteotomy plate and the intercondylar osteotomy guide of any of claims 1-9, said intercondylar osteotomy guide removably disposed on said intercondylar osteotomy plate.

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