阅读说明：本技术 一种组配可调式四合一截骨板 (Four unification osteotomy plates with adjustable equipment ) 是由 蒋鹏 罗爱民 李维健 于 2020-05-15 设计创作，主要内容包括：本发明公开了一种组配可调式四合一截骨板,包括四合一截骨板主体和前后髁截骨块,将四合一截骨板设计为分体结构,可在截骨前通过后髁平面和胫骨平台面测量出膝关节屈膝间隙,通过前髁平面测量出膝关节股骨髁前髁截骨量,避免出现前髁Notch显现或截骨不足引起假体固定不稳；四合一截骨板主体设计有两个定位柱,通过测量的膝关节屈膝间隙及膝关节股骨髁前髁截骨量来调整四合一截骨板主体的上下位置,使四合一截骨板主体达到最佳截骨位置及选择最佳规格；四合一截骨板主体设计有取出结构,便于医生在手术中很方便快捷的取下四面截骨板主体,缩短了手术时间降低感染,避免匹配不好对骨量的切除,减少对软组织平衡系统的破坏。(The invention discloses an assembled adjustable four-in-one bone cutting plate, which comprises a four-in-one bone cutting plate main body and front and rear condyle bone cutting blocks, wherein the four-in-one bone cutting plate is designed into a split structure, a knee bending gap of a knee joint can be measured through a rear condyle plane and a tibial platform plane before bone cutting, and the knee joint femoral condyle bone cutting amount is measured through an anterior condyle plane, so that the instability of prosthesis fixation caused by the appearance of anterior condyle Notch or insufficient bone cutting is avoided; the four-in-one osteotomy plate main body is designed with two positioning columns, and the upper and lower positions of the four-in-one osteotomy plate main body are adjusted through the measured knee joint flexion gap and the knee joint femoral condyle anterior condylar osteotomy amount, so that the four-in-one osteotomy plate main body reaches the optimal osteotomy position and the optimal specification is selected; the four-in-one osteotomy plate main body is provided with a taking-out structure, so that doctors can conveniently and quickly take down the four-side osteotomy plate main body in an operation, the operation time is shortened, the infection is reduced, the resection of bone mass due to poor matching is avoided, and the damage to a soft tissue balance system is reduced.)

1. An assembled adjustable four-in-one bone cutting plate is characterized in that: the bone cutting plate comprises a four-in-one bone cutting plate main body (1) and anterior and posterior condylar bone cutting blocks (2), wherein the four-in-one bone cutting plate main body (1) and the anterior and posterior condylar bone cutting blocks (2) are clamped with a groove (11) through a protrusion A (21); the anterior and posterior condylar osteotomy block (2) is composed of an anterior condylar osteotomy block (22) and a posterior condylar osteotomy block (23), and the anterior condylar osteotomy block (22) and the posterior condylar osteotomy block (23) are connected to form an integrated anterior and posterior condylar osteotomy block (24).

2. The assembled adjustable four-in-one truncated plate according to claim 1, wherein: the anterior condyle plane (12) and the posterior condyle plane (13) of the four-in-one osteotomy plate main body (1) have no osteotomy groove.

3. The assembled adjustable four-in-one truncated plate according to claim 1, wherein: be provided with two reference columns (14) between four unification osteotomy plate main parts (1) and the distal end binding face of thighbone, reference column (14) are a telescopic link component, the top and the four unification osteotomy plate main parts (1) fixed connection of reference column (14), reference column (14) and the junction processing scale (15) of four unification osteotomy plate main parts (1).

4. The assembled adjustable four-in-one truncated plate according to claim 1, wherein: under the osteotomy state four unification osteotomy board main part (1) are provided with arch B (16) with the opposite of the laminating of bone surface, and arch B (16)'s both sides inner wall sets up by spout (17).

5. The assembled adjustable four-in-one truncated plate according to claim 1, wherein: the four-in-one osteotomy plate is characterized in that a plurality of grooves (11) are formed in the joint of the four-in-one osteotomy plate main body (1) and the anterior and posterior condylar osteotomy blocks (2), and a plurality of hemispherical circular arc grooves (18) are formed in the inner side walls of the grooves (11).

6. The assembled adjustable four-in-one truncated plate according to claim 1, wherein: the joint of the anterior and posterior condylar osteotomy block (2) and the four-in-one osteotomy plate main body (1) is provided with a plurality of bulges A (21), the outer side wall of each bulge A (21) is provided with an elastic steel ball (25), and the elastic steel balls (25) are clamped with the four-in-one osteotomy plate main body (1).

7. The assembled adjustable four-in-one truncated plate according to claim 1, wherein: the shape and the size of the four-in-one osteotomy plate main body (1) are matched with the shape and the size of the knee joint femoral prosthesis.

Technical Field

The invention relates to the technical field of medical instruments, in particular to an assembled adjustable four-in-one bone cutting plate.

Background

The knee joint prosthesis is a surgical implant for replacing the knee joint, is mainly used for knee joint surface replacement surgery, has great influence on the surgery effect and surgery risk due to the accuracy of bone cutting and surgery time in the knee joint prosthesis replacement surgery, and is mainly realized by a four-in-one bone cutting plate.

The common four-in-one bone cutting plate is of an integrated structure and mainly comprises four bone cutting grooves and fixing holes, before the four-side bone cutting of the femur, whether the extension gap and the knee bending gap of the knee joint are equal or not and whether the specification selection of the prosthesis is reasonable or not are generally required to be evaluated, the symptoms of postoperative joint instability or early loosening of the prosthesis and the like can be caused by the instability of the extension gap and the knee bending gap, the extension gap can be measured after the distal bone cutting of the tibia and the femur of the knee joint, however, the knee bending clearance of the knee joint is difficult to obtain before the four-side osteotomy of the femur, the knee bending clearance of the knee joint can be measured only after the four-side osteotomy of the femur, and at the moment, if the knee joint is unbalanced in the knee bending clearance, the adjustment is very difficult, therefore, the bone loss needs measures such as secondary bone cutting and ligament loosening, the operation time is prolonged, the possibility of infection in the operation is increased, and the risk of postoperative fracture is increased due to the bone loss.

Disclosure of Invention

The invention aims to provide an assembled adjustable four-in-one osteotomy plate, which has the advantages of ensuring that the extension gap of the knee joint before osteotomy at four sides is equal to the bending gap of the knee joint, avoiding unstable prosthesis fixation caused by the appearance of anterior condyle Notch or insufficient osteotomy, ensuring that the osteotomy position of the four-in-one osteotomy plate main body is good, being convenient for a doctor to conveniently and quickly take down the four-side osteotomy plate main body in an operation, shortening the operation time, reducing infection, avoiding the excision of bone mass due to poor matching, reducing the damage to a soft tissue balance system, and solving the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: an assembled adjustable four-in-one osteotomy plate comprises a four-in-one osteotomy plate main body and anterior and posterior condylar osteotomy blocks, wherein the four-in-one osteotomy plate main body and the anterior and posterior condylar osteotomy blocks are clamped with a groove through a bulge A; the anterior and posterior condylar osteotomy block consists of an anterior condylar osteotomy block and a posterior condylar osteotomy block, and the anterior condylar osteotomy block and the posterior condylar osteotomy block are connected to form an integrated anterior and posterior condylar osteotomy block.

Preferably, the anterior condyle plane and the posterior condyle plane of the four-in-one osteotomy plate body are free of osteotomy grooves.

Preferably, be provided with two reference columns between four unification osteotomy board main parts and the distal femur binding face, the reference column is a telescopic link component, the top and the four unification osteotomy board main parts fixed connection of reference column, the reference column processes the scale with the junction of four unification osteotomy board main parts.

Preferably, cut under the bone state four unification osteotomy board main parts are provided with protruding B with the opposite of the laminating of bone surface, protruding B's both sides inner wall sets up by the spout.

Preferably, the joint of the four-in-one osteotomy plate main body and the anterior and posterior condylar osteotomy blocks is provided with a plurality of grooves, and the inner side wall of each groove is provided with a plurality of hemispherical circular arc grooves.

Preferably, the junction of the anterior and posterior condylar osteotomy block and the four-in-one osteotomy plate main body is provided with a plurality of protrusions A, the outer side wall of each protrusion A is provided with an elastic steel ball, and the elastic steel ball is clamped with the four-in-one osteotomy plate main body.

Preferably, the shape and the size of the four-in-one osteotomy plate main body are matched with the shape and the size of the knee joint femoral prosthesis.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the matched and adjustable four-in-one bone cutting plate, the four-in-one bone cutting plate is designed into a split structure, the knee joint bending clearance is measured through the posterior condyle plane and the tibial platform plane before bone cutting, the fact that the four-side bone cutting anterior knee joint extension clearance is equal to the knee bending clearance is guaranteed, the knee joint femoral condyle anterior condyle bone cutting amount is measured through the anterior condyle plane, and the situation that the anterior condyle Notch appears or the bone cutting is insufficient to cause prosthesis fixation instability is avoided.

2. According to the assembled adjustable four-in-one osteotomy plate, the four-in-one osteotomy plate main body is provided with two positioning columns which can be adjusted up and down, and the up-and-down position of the four-in-one osteotomy plate main body is adjusted through the measured knee joint flexion gap and the knee joint femoral condyle anterior condylar osteotomy amount, so that the four-in-one osteotomy plate main body reaches the optimal osteotomy position and selects the optimal specification.

3. This four-in-one osteotomy plate with adjustable matched stack, four-in-one osteotomy plate main part design have take out the structure, and the doctor of being convenient for takes off four sides osteotomy plate main part very convenient and fast in the operation has shortened the operation time and has reduced the infection, avoids matcing not good excision to the bone volume, reduces the destruction to soft tissue balanced system.

Drawings

FIG. 1 is a front view of a main body structure of a four-in-one osteotomy plate of the present invention;

FIG. 2 is a side view of the main body structure of the four-in-one osteotomy plate of the present invention;

FIG. 3 is a schematic representation of the anterior condylar osteotomy block structure of the present invention;

FIG. 4 is a schematic representation of the posterior condylar osteotomy block structure of the present invention;

FIG. 5 is a schematic view of the integrated anterior and posterior condylar osteotomy block structure of the present invention.

In the figure: 1. a four-in-one osteotomy plate body; 11. a groove; 12. an anterior condyle plane; 13. a posterior condylar plane; 14. a positioning column; 15. calibration; 16. a protrusion B; 17. a chute; 18. a hemispherical arc groove; 2. an anteroposterior condyle osteotomy block; 21. a protrusion A; 22. an anterior condylar osteotomy block; 23. a posterior condylar osteotomy block; 24. an integrated anterior and posterior condylar osteotomy block; 25. elastic steel balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

A kind of association adjustable four-in-one bone cutting plate, used for the femur four-side bone cutting in the knee joint operation replacement uses, including four-in-one bone cutting plate body 1 and anterior and posterior condylar bone cutting block 2, four-in-one bone cutting plate body 1 and anterior and posterior condylar bone cutting block 2 are through protruding A21 and groove 11 joint, the shape and size of the four-in-one bone cutting plate body 1 matches with shape and size of the knee joint femur false body, the doctor can choose the false body specification rationally through the appearance of four-in-one bone cutting plate and knee joint femur appearance comparison, has reduced the improper risk of false body specification selection, if the false body chooses too big, the false body will rub with knee joint ligament, musculature, the track of the muscle tissue, the patella will change too, make the patient feel pain or other symptoms after the operation; if the prosthesis is selected too small, the prosthesis and the bone are not covered completely, so that the symptoms of excessive bleeding after operation, stress concentration, rapid abrasion of the prosthesis, short service life of the prosthesis and the like are caused.

Referring to fig. 1-2, the anterior condyle plane 12 and the posterior condyle plane 13 of the four-in-one osteotomy plate main body 1 have no osteotomy groove, and the knee joint flexion gap can be measured through the posterior condyle plane 13 and the tibial platform plane before osteotomy, so as to ensure that the four-side osteotomy anterior knee joint extension gap is equal to the knee flexion gap, and the knee joint femoral condyle anterior condyle osteotomy amount can be measured through the anterior condyle plane 12, thereby avoiding the occurrence of anterior condyle Notch, avoiding the occurrence of fracture of the knee prosthesis femur caused by the anterior condyle Notch, two positioning columns 14 are arranged between the four-in-one osteotomy plate main body 1 and the distal femur joint surface, and the two positioning columns 14 and the nail hole punched on the distal femur surface are designed with the interference of 0.3mm to 0.5mm, so that the four-in-one osteotomy plate main body 1 is firmly and stable during osteotomy, and the error caused by the shaking of the four-in-one osteotomy plate due to the impact of the saw blade is reduced, the reference column 14 is a telescopic rod component, the top of reference column 14 and four unification osteotomy plate main part 1 fixed connection, reference column 14 and four unification osteotomy plate main part 1's junction processing scale 15, be convenient for can conveniently accurately adjust the upper and lower position of four unification osteotomy plate main part 1 in the operation, guarantee knee joint posterior condyle osteotomy volume and accuracy of anterior condyle osteotomy volume, four unification osteotomy plate main part 1 under the osteotomy state is provided with protruding B16 with the opposite of bone face laminating, protruding B16's both sides inner wall sets up by spout 17, can utilize convenient taking out four unification osteotomy plate main part 1 of spout 17 of protruding B16 both sides through the sliding hammer after the osteotomy is accomplished, save operation time, four unification osteotomy plate main parts 1 are provided with a plurality of recesses 11 with the junction of front and back osteotomy piece 2, be provided with a plurality of hemisphere circular arc grooves 18 on the inside wall of recess 11.

Referring to fig. 3, the anterior-posterior condylar osteotomy block 2 is composed of an anterior condylar osteotomy block 22 and a posterior condylar osteotomy block 23, the anterior condylar osteotomy block 22 and the posterior condylar osteotomy block 23 are connected to form an integrated anterior-posterior condylar osteotomy block 24, and the three kinds of osteotomy blocks can be respectively matched with the four-in-one osteotomy plate main body 1, so that an operator has various selectivity according to different conditions in an operation.

Referring to fig. 4-5, the joint of the anterior and posterior condylar osteotomy block 2 and the four-in-one osteotomy plate main body 1 is provided with a plurality of protrusions a21, the outer sidewall of the protrusion a21 is provided with elastic steel balls 25, and the elastic steel balls 25 are engaged with the hemispherical circular arc groove 18 of the four-in-one osteotomy plate main body 1.

The working principle is as follows: the four-in-one osteotomy plate is designed into a split structure, the anterior condyle plane 12 and the posterior condyle plane 13 of the four-in-one osteotomy plate main body 1 have no osteotomy groove, a knee joint bending gap can be measured through the posterior condyle plane 13 and a tibia platform surface before osteotomy, the knee joint femoral condyle anterior condyle osteotomy amount is measured through the anterior condyle plane 12, the four-in-one osteotomy plate main body 1 is consistent with the prosthesis appearance design, two positioning columns 14 capable of being adjusted up and down are designed on the four-in-one osteotomy plate main body 1, the up and down positions of the four-in-one osteotomy plate main body 1 are adjusted through the measured knee joint bending gap and the knee joint femoral condyle anterior condyle osteotomy amount, so that the four-in-one osteotomy plate main body 1 reaches the optimal osteotomy position and selects the optimal specification, after the position and the specification of the four-in-one osteotomy plate main body 1 are determined, a doctor inserts the anterior and posterior osteotomy blocks 2 with different structures according to requirements to carry out accurate four-side osteotomy of the knee joint femur, the four-in-one osteotomy plate main body 1 can be used independently during osteotomy, and can also be matched and used with the anterior and posterior condylar osteotomy blocks 2 according to the requirements of doctors.

In summary, the following steps: the assembled adjustable four-in-one osteotomy plate is designed into a split structure, the anterior condyle plane 12 and the posterior condyle plane 13 of the four-in-one osteotomy plate main body 1 have no osteotomy groove, the knee bending gap of the knee joint can be measured through the posterior condyle plane 13 and the tibial plateau surface before osteotomy, the four-side osteotomy anterior knee joint extension gap and the knee bending gap are ensured to be equal, meanwhile, the knee joint femoral condyle anterior condyle osteotomy amount can be measured through the anterior condyle plane 12, and the condition that the prosthesis is unstable due to the appearance of anterior condyle Notch or insufficient osteotomy is avoided; the four-in-one osteotomy plate main body 1 is consistent with the prosthesis appearance design, the four-in-one osteotomy plate main body 1 is provided with two positioning columns 14 which can be adjusted up and down, and the up-and-down position of the four-in-one osteotomy plate main body 1 is adjusted through the measured knee joint flexion gap and knee joint femoral condyle anterior condyle osteotomy amount, so that the four-in-one osteotomy plate main body 1 reaches the optimal osteotomy position and selects the optimal specification; after the position and the specification of the four-in-one osteotomy plate main body 1 are determined, a doctor loads the front and rear condylar osteotomy blocks 2 with different structures according to requirements to perform osteotomy, so that the stability of a saw blade during osteotomy is ensured, and finally, accurate four-side osteotomy of the knee joint femur is realized; the four-in-one osteotomy plate main body 1 can be used independently during osteotomy, and can also be matched and combined with the anterior and posterior condylar osteotomy blocks 2 according to the requirements of doctors for use; the four-in-one osteotomy plate main body 1 is provided with a taking-out structure, so that doctors can conveniently and quickly take down the four-in-one osteotomy plate main body in an operation, the operation time is shortened, the infection is reduced, the poor matching of the osteotomy plate main body to the bone mass is avoided, and the damage to a soft tissue balance system is reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.