CN117100462B

CN117100462B - Femoral condyle spacer mold

Info

Publication number: CN117100462B
Application number: CN202311357461.XA
Authority: CN
Inventors: 周殿阁; 王彩梅; 崔文
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2023-10-19
Filing date: 2023-10-19
Publication date: 2024-03-15
Anticipated expiration: 2043-10-19
Also published as: CN117100462A

Abstract

The invention provides a femoral condyle spacer mold, comprising: a curved bottom plate having a receiving recess; the pressing part can be inserted into the accommodating concave part in a pluggable manner, and when the pressing part is inserted into the bending bottom plate, a first forming gap is formed between the pressing part and the bending bottom plate; a first channel arranged on the pressing part, wherein an opening of the first channel is arranged on the surface of the pressing part and faces the bending bottom plate; the first adjusting part is movably arranged in the first channel, a second forming gap communicated with the first forming gap is formed between the first adjusting part and the bending bottom plate, and the first adjusting part moves to adjust the size of the second forming gap. According to the technical scheme, the problem that the bone cement spacer in the related technology cannot adjust the valgus angle and the external rotation angle of the bone cement spacer according to the reduction effect in operation so as to reach the ideal force line level is effectively solved.

Description

Femoral condyle spacer mold

Technical Field

The invention relates to the technical field of medical instrument molds, in particular to a femoral condyle spacer mold.

Background

Deep infection after joint replacement is a serious complication of artificial knee joint replacement, reported to occur at 0.5% to 3%, once infection occurs, it is disastrous for patients, chronic infection is one of the main causes of failure of artificial joint replacement, and treatment thereof includes antibiotic application, debridement, primary and secondary replacement by prosthesis removal, joint fusion, amputation, and the like. The second-stage operation is currently accepted as a gold standard for treating infections after artificial joint replacement surgery, and can obviously reduce the reinfection rate of revision surgery, thereby improving the survival rate of the prosthesis. The spacer with antibiotics is used in the intermittent period of two operations, so that the local high-concentration antibiotics can be released, the joint gap can be maintained, and the discomfort symptoms of patients in the intermittent period can be improved. With the requirements of people on the effects after the secondary revision surgery and the improvement of the medical technology level, the spacers with different manufacturing processes are generated, and most of the scholars currently recognize that the antibiotic bone cement spacer with joint function has obvious advantages in the aspects of controlling infection, improving the function of joint movement after the surgery and the like, but the problems of some applications are generated and need to be further studied.

When the bone cement spacer is implanted, the tightness of the tissue at the inner side and the outer side of the joint of the patient cannot be accurately judged before an operation, so that after the standardized bone cement spacer formed by adopting a standardized die is implanted, the standardized bone cement spacer cannot be completely matched with the patient, and the valgus angle of the joint of the patient after the implantation of the bone cement spacer cannot be restored to the ideal state of the joint of the patient, and the force line of the joint of the patient implanted with the standardized bone cement spacer cannot be restored to the original force line position, so that the restoration of the patient is influenced.

Disclosure of Invention

The invention mainly aims to provide a femoral condyle spacer die, which is used for solving the problem that a bone cement spacer in the related art cannot adjust the valgus angle and the external rotation angle of the bone cement spacer according to the resetting effect in operation so as to achieve an ideal force line level.

In order to achieve the above object, the present invention provides a femoral condyle spacer mold comprising: a curved bottom plate having a receiving recess; the pressing part can be inserted into the accommodating concave part in a pluggable manner, and when the pressing part is inserted into the bending bottom plate, a first forming gap is formed between the pressing part and the bending bottom plate; a first channel arranged on the pressing part, wherein an opening of the first channel is arranged on the surface of the pressing part and faces the bending bottom plate; the first adjusting part is movably arranged in the first channel, a second forming gap communicated with the first forming gap is formed between the first adjusting part and the bending bottom plate, and the first adjusting part moves to adjust the size of the second forming gap.

Further, the femoral condyle spacer mold further comprises a second adjusting portion and a second channel, the second channel is arranged on the pressing portion, an opening of the second channel is arranged on the surface of the pressing portion and faces the curved bottom plate, the first channel and the second channel are arranged in a crossing mode, the second adjusting portion is movably arranged in the second channel, a third molding gap communicated with the first molding gap is formed between the second adjusting portion and the curved bottom plate, and the second adjusting portion moves to adjust the size of the third molding gap.

Further, the end of the accommodating recess is provided open, the side face of the nip is provided corresponding to the end of the accommodating recess, and the first passage and the second passage are provided on the side face of the nip.

Further, a notch structure is arranged on the side face of the pressing part, the femur condyle spacer die further comprises a combination block arranged in the notch structure, and a first channel and a second channel are formed between the combination block and the inner wall of the notch structure.

Further, a first mounting part is arranged in the first channel, the first mounting part extends from the side surface of the pressing part to the center direction of the pressing part, the first mounting part comprises a plurality of first mounting holes, the first adjusting part comprises a first limiting block and a first inserting column connected with the first limiting block, and the first inserting column is inserted into the first mounting holes to connect the first adjusting part with the pressing part; the second channel is internally provided with a second installation part, the second installation part extends from the side face of the pressing part to the center direction of the pressing part, the second installation part comprises a plurality of second installation holes, the second adjusting part comprises a second limiting block and a second inserting column connected with the second limiting block, and the second inserting column is inserted into the second installation hole to connect the second adjusting part with the pressing part.

Further, the assembly block is detachably arranged on the pressing part.

Further, a plurality of first grooves and a plurality of second grooves are formed in the assembly block, the first grooves are formed in one side, facing the first channel, of the assembly block at intervals, the second grooves are formed in one side, facing the second channel, of the assembly block at intervals, the first adjusting portion is a first baffle, the second adjusting portion is a second baffle, the first baffle can be selectively inserted into one of the first grooves, and the second baffle can be selectively inserted into one of the second grooves.

Further, the femoral condyle spacer mold further comprises a first positioning block detachably connected to the curved bottom plate, the first positioning block can extend into the first channel, and the first limiting block is fit with the first positioning block in a fitting manner to determine the position of the first limiting block in the first channel.

Further, a first positioning notch is formed in the side wall of the bending bottom plate, the first positioning block further comprises a first positioning protrusion, the first positioning protrusion is arranged on one side, away from the center of the pressing part, of the first positioning block, and the first positioning protrusion is inserted into the first positioning notch to enable the first positioning block to be connected with the bending bottom plate.

Further, the femoral condyle spacer mold further comprises a second positioning block detachably connected to the curved bottom plate, the second positioning block can extend into the second channel, and the second limiting block is matched with the second positioning block in a fitting manner to determine the position of the second limiting block in the second channel.

Further, a second positioning notch is further formed in the side wall of the bending bottom plate, the second positioning block further comprises a second positioning protrusion, the second positioning protrusion is arranged on one side, far away from the center of the pressing part, of the second positioning block, and the second positioning protrusion is inserted into the second positioning notch to enable the second positioning block to be connected with the bending bottom plate.

Further, a first convex edge and a second convex edge are arranged on the side wall, facing the bending bottom plate, of the pressing part, the first convex edge and the second convex edge are respectively located on two sides of the pressing part, and the upper edge of the bending bottom plate is respectively in butt fit with the first convex edge and the second convex edge.

Further, the pressing portion comprises a first pressing portion, a second pressing portion and a connecting piece, the connecting piece is connected with the first pressing portion and the second pressing portion, and the first channel, the second channel and the assembling block are arranged on the surface, far away from the second pressing portion, of the first pressing portion.

Further, the pressing portion further includes a third pressing portion disposed between the first pressing portion and the second pressing portion, and the connecting member penetrates through the first pressing portion, the second pressing portion, and the third pressing portion to connect the first pressing portion, the second pressing portion, and the third pressing portion.

Further, the bending bottom plate comprises a first molding part and a second molding part, the first molding part and the second molding part are detachably connected, and the intersection of the first molding part and the second molding part is positioned at the bottom of the pressing part.

By applying the technical scheme of the invention, the bending bottom plate is provided with the accommodating concave part. The pressing part can be inserted into the accommodating concave part in a pluggable manner, and when the pressing part is inserted into the bending bottom plate, a first forming gap is formed between the pressing part and the bending bottom plate. A first channel is provided on the nip with an opening provided on a surface of the nip, the opening of the first channel being directed towards the curved floor. A movable first adjusting part is arranged in the first channel, a second forming gap is formed between the first adjusting part and the bending bottom plate, the second forming gap is communicated with the first forming gap, and the first adjusting part moves to adjust the size of the second forming gap. Through foretell setting, hold the concave part and make the pressfitting portion can stretch into in the crooked bottom plate, and then make under crooked bottom plate and pressfitting portion's effect, the femoral condyle spacer can be in the shaping of first shaping clearance. The opening of the first channel arranged on the surface of the pressing part faces the bending bottom plate, so that bone cement can enter the first channel under the action of the extrusion force of the pressing part and the bending bottom plate, and then after the bone cement is molded in the first channel, the defect part on the surface of bone of a human body can be filled when the bone cement is implanted into the human body. The first adjusting part is movably arranged in the first channel, the size of the second forming gap can be changed, namely the size of bone cement formed in the first channel can be changed, and when the bone cement spacer is manufactured by using the femoral condyle spacer die, the relative position of the surface of the bone cement spacer and the bone surface of a patient can be adjusted, so that the valgus angle and the valgus angle of the bone cement spacer can be adjusted, and the force line of the bone cement spacer after being implanted into the bone of a human body can be restored to the physiological force line position. Therefore, the technical scheme of the application effectively solves the problem that the bone cement spacer in the related technology cannot adjust the valgus angle and the external rotation angle of the bone cement spacer according to the reduction effect in operation so as to reach the ideal force line level.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 shows a schematic perspective view of an embodiment one of a femoral condyle spacer mold in accordance with the present invention;

FIG. 2 shows an enlarged partial schematic view of the femoral condyle spacer mold of FIG. 1 at A;

FIG. 3 illustrates a schematic perspective view of the curved bottom plate and the nip of the femoral condyle spacer mold of FIG. 1 with the curved bottom plate and the nip separated;

FIG. 4 illustrates a schematic perspective view of the first adjustment portion of the femoral condyle spacer mold of FIG. 1 in engagement with a first locating block and the second adjustment portion in engagement with a second locating block;

FIG. 5 shows an exploded view of the femoral condyle spacer mold of FIG. 4;

FIG. 6 illustrates a schematic perspective view of a nip of a second embodiment of a femoral condyle spacer mold in accordance with the present invention;

FIG. 7 shows an exploded view of the femoral condyle spacer mold of FIG. 6;

FIG. 8 shows a schematic view of an exploded view of a curved bottom plate of the femoral condyle spacer mold of FIG. 1;

FIG. 9 shows a schematic perspective view of the femoral condyle spacer mold of FIG. 3 after spacer installation;

FIG. 10 shows an exploded view of the femoral condyle spacer mold of FIG. 9;

FIG. 11 illustrates a schematic perspective view of the first and second molding portions of the femoral condyle spacer mold of FIG. 8 after assembly;

FIG. 12 illustrates an exploded view of the press-fit portion of the femoral condyle spacer mold of FIG. 1;

FIG. 13 shows a schematic perspective view of a third embodiment of a femoral condyle spacer mold in accordance with the present invention;

FIG. 14 shows an exploded view of the femoral condyle spacer mold of FIG. 13;

fig. 15 shows a schematic front view of the femoral condyle spacer mold of fig. 13.

Wherein the above figures include the following reference numerals:

10. bending the bottom plate; 11. a receiving recess; 12. a first positioning notch; 13. a second positioning notch; 14. a first molding part; 15. a second molding part; 20. a pressing part; 205. a notch structure; 21. a first flange; 22. a second flange; 23. a first pressing part; 24. a second pressing part; 25. a connecting piece; 26. a third pressing part; 30. a first molding gap; 40. a first channel; 41. a first mounting portion; 411. a first mounting hole; 50. a first adjusting part; 51. a first limiting block; 52. a first plug-in post; 53. a first baffle; 60. a second molding gap; 70. a second adjusting part; 71. a second limiting block; 72. the second plug-in column; 73. a second baffle; 80. a second channel; 81. a second mounting portion; 811. a second mounting hole; 90. a third molding gap; 100. a block assembly; 101. a first groove; 102. a second groove; 110. a first positioning block; 111. a first positioning protrusion; 120. a second positioning block; 121. and a second positioning protrusion.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Embodiment one:

as shown in fig. 1 and 2, in a first embodiment, a femoral condyle spacer mold includes: the bending base plate 10, the pressing portion 20, the first passage 40, and the first regulating portion 50. The curved bottom plate 10 has a receiving recess 11. The pressing portion 20 is inserted into the accommodating recess 11 in a pluggable manner, and when the pressing portion 20 is inserted into the curved bottom plate 10, a first molding gap 30 is formed between the pressing portion 20 and the curved bottom plate 10. The first channel 40 is provided on the nip 20, and the opening of the first channel 40 is provided on the surface of the nip 20 and directed towards the curved bottom plate 10. The first adjusting part 50 is movably disposed in the first passage 40, a second molding gap 60 communicating with the first molding gap 30 is formed between the first adjusting part 50 and the curved bottom plate 10, and the first adjusting part 50 moves to adjust the size of the second molding gap 60.

In the first embodiment, the curved bottom plate 10 has a receiving recess 11. The pressing portion 20 is inserted into the accommodating recess 11 in a pluggable manner, and when the pressing portion 20 is inserted into the curved bottom plate 10, a first molding gap 30 is formed between the pressing portion 20 and the curved bottom plate 10. A first channel 40 is provided on the nip 20, the opening of the first channel 40 being provided on the surface of the nip 20, the opening of the first channel 40 being directed towards the curved bottom plate 10. A first adjusting portion 50 is movably provided in the first passage 40, a second molding gap 60 is formed between the first adjusting portion 50 and the curved bottom plate 10, the second molding gap 60 communicates with the first molding gap 30, and the first adjusting portion 50 moves to adjust the size of the second molding gap 60. With the above arrangement, the accommodating recess 11 allows the press-fit portion 20 to extend into the curved base plate 10, and thus allows the femoral condyle spacer to be molded in the first molding gap 30 under the influence of the curved base plate 10 and the press-fit portion 20. The opening of the first channel 40 provided on the surface of the pressing portion 20 faces the curved bottom plate 10, so that bone cement can enter the first channel 40 under the pressing force of the pressing portion 20 and the curved bottom plate 10, and then the bone cement can be filled into the defect part of the bone surface of the human body when being implanted into the human body after being molded in the first channel 40. The first adjusting part 50 is movably arranged in the first channel 40, and can change the size of the second molding gap 60, namely, the size of the bone cement molded in the first channel 40, so that when the bone cement spacer is manufactured by using the femoral condyle spacer mold, the relative position of the bone cement spacer surface and the bone surface of a patient can be adjusted, and thus, the valgus angle and the external rotation angle of the bone cement spacer can be adjusted, so that the force line of the bone cement spacer after being implanted into the bone of a human body can be restored to the physiological force line position. Therefore, the technical scheme of the first embodiment effectively solves the problem that the bone cement spacer in the related art cannot adjust the valgus angle and the external rotation angle of the bone cement spacer according to the reduction effect in the operation so as to reach the ideal force line level.

Specifically, the opening of the accommodation recess 11 is contracted toward the center of the curved bottom plate 10.

It should be noted that, the tightness of the inner and outer soft tissues of the knee joint cannot be accurately judged before the operation, the ideal femoral condyle spacer cannot be prefabricated, the standardized femoral condyle spacer is formed by using a standardized die in the operation in a conventional mode, the matching effect with the patient cannot be achieved, and the influence of the unbalance of the soft tissues and the bone defect on the force line cannot be comprehensively solved. The femoral condyle spacer of this embodiment can be prepared intraoperatively, and the position of the support and the height of the support can be changed by adjusting the size of the second molding gap 60, so that the valgus angle and the valgus angle of the femoral condyle spacer are adjusted, and the femoral condyle spacer can reach an ideal force line level.

Of course, the first adjusting part 50 is movably arranged in the first channel 40, and the size of the second molding gap 60 can be changed, namely, the size of the bone cement molded in the first channel 40 can be changed, so that the bone cement spacers manufactured by using the femoral condyle spacer mold can be used for filling defect positions with different sizes on the bone surface of a patient.

As shown in fig. 1 and 4, in the first embodiment, the femoral condyle spacer mold further includes a second adjusting portion 70 and a second passage 80, the second passage 80 is provided on the nip 20, an opening of the second passage 80 is provided on a surface of the nip 20 and faces the curved bottom plate 10, the first passage 40 is disposed to intersect the second passage 80, the second adjusting portion 70 is movably provided in the second passage 80, a third molding gap 90 communicating with the first molding gap 30 is formed between the second adjusting portion 70 and the curved bottom plate 10, and the second adjusting portion 70 is moved to adjust a size of the third molding gap 90. The second channel 80 provided on the surface of the pressing portion 20 has an opening toward the curved bottom plate 10, so that bone cement can enter the second channel 80 under the pressing force of the pressing portion 20 and the curved bottom plate 10, and thus, the bone cement can be filled into a defect portion of the bone surface of the human body when being implanted into the human body after being molded in the second channel 80. The first channel 40 and the second channel 80 are arranged in a crossing manner, so that when the femoral condyle spacer is manufactured by using the femoral condyle spacer die, filling bone cement with different positions and different sizes can be formed on the surface of the femoral condyle spacer, and then the defects of different positions on the bone surface of a human body can be repaired. The second adjusting part 70 is movably arranged in the second channel 80, so that the size of the third molding gap 90 can be changed, and the size of bone cement molded in the second channel 80 can be changed, so that the bone cement manufactured by using the femoral condyle spacer die can adapt to defect parts of bone surfaces of human bodies with different positions and different sizes, and the sizes of the valgus angle and the external rotation angle of the bone cement spacer can be changed, so that the force line at the joint of a patient after the bone cement spacer is implanted can be restored to the physiological force line position.

Preferably, in the first embodiment, the first channel and the second channel are disposed at right angles.

Specifically, the first channel 40 and the second channel 80 are disposed to intersect each other, which means that an included angle exists between the center line of the first channel 40 and the center line of the second channel 80 in the three-dimensional space, and the first channel 40 and the second channel 80 may be in communication, and of course, the first channel 40 and the second channel 80 may be not in communication.

As shown in fig. 3, 8 and 11, in the first embodiment, the end of the accommodating recess 11 is provided open, the side face of the nip 20 is provided corresponding to the end of the accommodating recess 11, and the first passage 40 and the second passage 80 are provided on the side face of the nip 20. The above arrangement allows the first and second regulating portions 50 and 70 to be easily installed into the first and second passages 40 and 80, respectively, i.e., the end portions of the accommodation recess 11 do not interfere with the installation of the first and second regulating portions 50 and 70. Such an arrangement also enables the press-fit portion 20 to be taken out through the end of the accommodation recess 11 that is provided open, i.e., the press-fit portion 20 can be taken out from the curved bottom plate 10 more easily.

The open end of the accommodating recess 11 means that a certain distance is provided between the ends of the accommodating recess 11 away from the bottom of the curved bottom plate 10 so that the press-fit portion is inserted into the accommodating recess.

As shown in fig. 3, in the first embodiment, the pressing portion 20 is provided with a notch structure 205 on a side surface thereof, and the femoral condyle spacer mold further includes a block 100 disposed in the notch structure 205, and a first channel 40 and a second channel 80 are formed between the block 100 and an inner wall of the notch structure 205. The notch structure 205 is disposed such that bone cement can extend into the space where the pressing portion 20 is located, i.e. the bone cement can extend out of the space of the first molding gap 30, and then after the femoral condyle spacer is molded, the bone cement extending out of the first molding gap 30 can fill the defect on the bone of the human body. The arrangement of the block 100 enables bone cement extending out of the first molding gap 30 to be molded within the first channel 40 and the second channel 80.

Specifically, in the first embodiment, the assembly block 100 is fixedly disposed on the pressing portion 20.

As shown in fig. 5, in the first embodiment, a first mounting portion 41 is disposed in the first channel 40, the first mounting portion 41 extends from a side surface of the pressing portion 20 toward a center direction of the pressing portion 20, the first mounting portion 41 includes a plurality of first mounting holes 411, the first adjusting portion 50 includes a first stopper 51 and a first plug post 52 connected to the first stopper 51, and the first plug post 52 is inserted into the first mounting hole 411 to connect the first adjusting portion 50 and the pressing portion 20. The second channel 80 is provided with a second mounting portion 81, the second mounting portion 81 extends from the side surface of the pressing portion 20 toward the center direction of the pressing portion 20, the second mounting portion 81 includes a plurality of second mounting holes 811, the second adjusting portion 70 includes a second limiting block 71 and a second plug post 72 connected with the second limiting block 71, and the second plug post 72 is inserted into the second mounting hole 811 to connect the second adjusting portion 70 with the pressing portion 20. The above arrangement makes the first plug-in post 52 insert into the first mounting hole 411, that is, the first plug-in post 52 can extend into the pressing portion 20 to connect the first adjusting portion 50 with the pressing portion 20, so that the first mounting portion 41 and the first plug-in post 52 do not interfere with the formation of bone cement in the first channel 40, and the difference between the bone cement formed in the first channel 40 and the defect of the bone surface of the human body is avoided, which affects the stability of use of the femoral condyle spacer after implantation. The second plug post 72 can be inserted into the second mounting hole 811, that is, the second plug post 72 can extend into the pressing portion 20, and the second plug post 72 is connected with the pressing portion 20, so that the second mounting portion 81 and the second plug post 72 cannot interfere with the formation of bone cement in the second channel 80, and the difference between the bone cement formed in the second channel 80 and the defect of the bone surface of a human body is avoided, and the stability of the femoral condyle spacer after implantation is affected.

Preferably, the first plurality of mounting holes 411 have a pitch of 5mm. Of course, in the embodiment not shown in the drawings, the pitch of the plurality of first mounting holes 411 may be 1mm, 2mm, 3mm, 4mm or 6mm, or may be other values. The pitch of the plurality of second mounting holes 811 is 5mm. Of course, in the embodiment not shown in the drawings, the pitch of the plurality of second mounting holes 811 may be 1mm, 2mm, 3mm, 4mm or 6mm, or may be other values.

Specifically, the first limiting block 51 is provided with a first protrusion, the first protrusion is disposed on one side of the first limiting block 51 away from the center of the pressing portion 20, that is, the first protrusion and the first inserting post 52 are disposed opposite to each other, and the first protrusion and the first inserting post 52 are located on two sides of the first limiting block 51. The second limiting block 71 is provided with a second protrusion, the second protrusion is arranged on one side of the second limiting block 71 far away from the center of the pressing part, namely, the second protrusion and the second plug-in post 72 are oppositely arranged, and the second protrusion and the second plug-in post 72 are located on two sides of the second limiting block 71.

As shown in fig. 2, 3, 5 and 8, in the first embodiment, the first positioning notch 12 is provided on the side wall of the curved bottom plate 10, the first positioning block 110 further includes a first positioning protrusion 111, the first positioning protrusion 111 is provided on a side of the first positioning block 110 away from the center of the pressing portion 20, and the first positioning protrusion 111 is inserted into the first positioning notch 12 to connect the first positioning block 110 with the curved bottom plate 10. The first positioning notch 12 facilitates the installation of the first positioning protrusion 111, i.e. facilitates the connection of the first positioning block 110 and the curved bottom plate 10, thereby facilitating the determination of the installation position of the first stopper 51 in the first channel 40. The first positioning protrusion 111 is disposed at a side of the first positioning block 110 away from the center of the pressing part 20, so that clamping of the first positioning protrusion 111 is facilitated, and further, the first positioning block 110 is conveniently mounted to the curved bottom plate 10 or dismounted from the curved bottom plate 10.

As shown in fig. 4 and 5, in the first embodiment, the femoral condyle spacer mold further includes a second positioning block 120, the second positioning block 120 is detachably connected to the curved bottom plate 10, the second positioning block 120 can extend into the second channel 80, and the second stopper 71 is configured to determine the position of the second stopper 71 in the second channel 80 by fitting with the second positioning block 120. The above arrangement facilitates determining the position of the second stop block 71 within the second channel 80 and thus the size of the third molding gap 90, i.e. the size of the bone cement molded within the third molding gap 90.

Specifically, the plurality of second positioning blocks 120 is provided, and the thicknesses of the plurality of second positioning blocks 120 are different. The second positioning blocks 120 with different thicknesses are connected to the bending bottom plate 10, so that the installation position of the second limiting block 71 attached to the second positioning blocks 120 in the second channel 80 is changed, the size of the third forming gap 90 is changed, and finally the size of bone cement formed in the third forming gap 90 is changed.

As shown in fig. 2, 3, 5 and 8, in the first embodiment, the side wall of the curved bottom plate 10 is further provided with a second positioning notch 13, the second positioning block 120 further includes a second positioning protrusion 121, the second positioning protrusion 121 is disposed on a side of the second positioning block 120 away from the center of the pressing portion 20, and the second positioning protrusion 121 is inserted into the second positioning notch 13 to connect the second positioning block 120 with the curved bottom plate 10. The second positioning notch 13 facilitates the installation of the second positioning protrusion 121, that is, facilitates the connection of the second positioning block 120 with the curved bottom plate 10, and thus facilitates the determination of the installation position of the second limiting block 71 in the second channel 80. The second positioning protrusion 121 is disposed on a side of the second positioning block 120 away from the center of the pressing portion 20, so as to facilitate clamping of the second positioning protrusion 121, and further facilitate mounting and dismounting of the second positioning block 120 to and from the curved bottom plate 10.

As shown in fig. 3, 5, 9 and 10, in the first embodiment, a first protruding edge 21 and a second protruding edge 22 are disposed on a side wall of the pressing portion 20 facing the curved bottom plate 10, the first protruding edge 21 and the second protruding edge 22 are respectively located at two sides of the pressing portion 20, and an upper edge of the curved bottom plate 10 is respectively in abutting fit with the first protruding edge 21 and the second protruding edge 22. The above arrangement makes it possible to control the distance that the pressing portion 20 extends into the accommodating recess 11 under the combined action of the first and second flanges 21 and 22 and the upper edge of the curved bottom plate 10 after the pressing portion 20 is inserted into the accommodating recess 11, and further control the distance between the pressing portion 20 and the curved bottom plate 10, i.e. control the size of the first forming gap 30.

Specifically, in this embodiment, the first flange 21 is disposed flush with the top of the pressing portion 20, and the second flange 22 is spaced apart from the top of the pressing portion 20.

As shown in fig. 1, 3, 5, 9, 10 and 12, in the first embodiment, the pressing portion 20 includes a first pressing portion 23, a second pressing portion 24 and a connecting member 25, the connecting member 25 connects the first pressing portion 23 and the second pressing portion 24, and the first channel 40, the second channel 80 and the assembly block 100 are disposed on a surface of the first pressing portion 23 away from the second pressing portion 24. The connecting member 25 connects the first pressing portion 23 and the second pressing portion 24, facilitating the mounting and dismounting of the pressing portion 20 in use. The first passage 40, the second passage 80, and the assembly block 100 are disposed on the surface of the first pressing portion 23 remote from the second pressing portion 24, facilitating the disassembly and assembly of the first adjusting portion 50, the second adjusting portion 70, the first positioning block 110, and the second positioning block 120.

As shown in fig. 1, 3, 5, 9, 10 and 12, in the first embodiment, the pressing portion 20 further includes a third pressing portion 26, the third pressing portion 26 is disposed between the first pressing portion 23 and the second pressing portion 24, and the connecting member 25 penetrates the first pressing portion 23, the second pressing portion 24 and the third pressing portion 26 to connect the first pressing portion 23, the second pressing portion 24 and the third pressing portion 26. The connecting piece 25 can connect the first pressing portion 23, the second pressing portion 24 and the third pressing portion 26, so that the assembling and disassembling of the pressing portion 20 are facilitated. The third pressing portion 26 is disposed such that, after the bone cement is molded in the first and second channels 40 and 80, the third pressing portion 26 is taken out of the accommodating recess 11, and then the second pressing portion 24 is taken out, and the first pressing portion 23 is movable from the side surface of the accommodating recess 11 toward the center of the accommodating recess 11 until the first pressing portion 23 is completely out of contact with the bone cement molded in the first and second channels 40 and 80, and then the first pressing portion 23 is taken out of the accommodating recess 11.

Preferably, the connection member 25 includes a connection pin and a connection hole. The connecting hole is provided through the first pressing portion 23, the second pressing portion 24, and the third pressing portion 26, and the connecting pin is provided through the connecting hole to connect the first pressing portion 23, the second pressing portion 24, and the third pressing portion 26.

Specifically, the first flange 21 includes a first flange provided on the first pressing portion 23, a second flange provided on the second pressing portion 24, and a third flange provided on the third pressing portion 26. The second flange 22 includes a fourth flange provided on the first pressing portion 23, a fifth flange provided on the second pressing portion 24, and a sixth flange provided on the third pressing portion 26.

It should be noted that the first flange 21 includes a flat plate and a vertical plate, the vertical plate is disposed at a beveled angle on a side away from the top of the pressing portion 20, the flat plate extends from the center of the pressing portion 20 toward a side of the pressing portion 20 near the first forming portion 14, and the vertical plate extends from the top of the pressing portion 20 toward the bottom of the pressing portion 20. The second flange 22 is identical in structure to the first flange 21.

As shown in fig. 1, 3 to 5 and 9 to 11, in the first embodiment, the curved bottom plate 10 includes a first molding portion 14 and a second molding portion 15, the first molding portion 14 and the second molding portion 15 are detachably connected, and an intersection of the first molding portion 14 and the second molding portion 15 is located at a bottom of the press-fit portion 20. The first molding portion 14 and the second molding portion 15 are detachably disposed such that after the femoral condyle spacer is molded in the first molding gap 30, the first molding portion 14 and the second molding portion 15 are detached, and the femoral condyle spacer can be removed.

Specifically, the intersection of the first molding portion 14 and the second molding portion 15 is located at the bottom of the press-fit portion 20, which means that the intersection of the first molding portion 14 and the second molding portion 15 is located in the vertical space where the bottom of the press-fit portion is located. In an embodiment not shown in the figures, the intersection of the first and second shaped portions 14, 15 may also be located on the side of the nip 20, in particular, the intersection of the first and second shaped portions 14, 15 is located in the lateral space of the nip.

Specifically, in the first embodiment, the first flange 21 is located on the side of the pressing portion 20 near the first molding portion 14, and the second flange 22 is located on the side of the pressing portion 20 near the second molding portion 15.

Preferably, the first positioning notch 12 and the second positioning notch 13 are both provided on the second molding portion 15. The first molding portion 14 is such that the distance between the outer surface of the first molding portion 14 and the center of the curved bottom plate 10 increases and decreases in the direction from the intersection of the first molding portion 14 and the second molding portion 15 to the top of the first molding portion 14. The distance between the outer surface of the first molding part 14 and the center of the curved bottom plate 10 gradually decreases in the direction from the side of the first molding part 14 to the center of the first molding part 14. The second molding portion 15 is such that the distance between the outer surface of the second molding portion 15 and the center of the curved bottom plate 10 increases and decreases in the direction from the intersection of the first molding portion 14 and the second molding portion 15 to the top of the second molding portion 15. The distance between the outer surface of the second molding part 15 and the center of the curved bottom plate 10 gradually decreases in the direction from the side of the second molding part 15 to the center of the second molding part 15.

As shown in fig. 1, 3-5, and 8-11, in a first embodiment, the femoral condyle spacer mold further includes a first connection portion and a second connection portion. The first connecting portion and the second connecting portion are connected to connect the first molding portion and the second molding portion.

The first connecting portion comprises a first connecting column, a second connecting column and a third connecting piece, the third connecting piece is a first screw, the first connecting column is arranged on one side face of the second forming portion 15, which is close to the first channel 40, the second connecting column is arranged on one side face of the first forming portion 14, which is close to the first channel 40, a third mounting hole is formed in the first connecting column, a fourth mounting hole is formed in the second connecting column, and the first screw penetrates through the third mounting hole and the fourth mounting hole to connect the first connecting column with the second connecting column.

Preferably, the third mounting hole and the fourth mounting hole are screw holes. The top of the first screw is provided with an inner hexagonal hole.

The second connecting portion comprises a third connecting column, a fourth connecting column and a fourth connecting piece, the fourth connecting piece is a second screw, the fourth connecting column is arranged on one side surface of the second forming portion 15 far away from the first channel 40, the third connecting column is arranged on one side surface of the first forming portion 14 far away from the first channel 40, a fifth mounting hole is formed in the third connecting column, a sixth mounting hole is formed in the fourth connecting column, and the second screw penetrates through the fifth mounting hole and the sixth mounting hole to connect the first connecting column with the second connecting column.

Preferably, the fifth mounting hole and the sixth mounting hole are screw holes. The top of the second screw is provided with an inner hexagonal hole.

Specifically, the first molding portion 14 is a first shaped curved plate, the second molding portion 15 is a second shaped curved plate, the second connecting column and the third connecting column are disposed on the first shaped curved plate, and the first connecting column and the fourth connecting column are disposed on the second shaped curved plate. Still be provided with first connecting plate between first spliced pole and the second dysmorphism curved plate, still be provided with the second connecting plate between second spliced pole and the first dysmorphism curved plate, still be provided with the third connecting plate between third spliced pole and the first dysmorphism curved plate, still be provided with the fourth connecting plate between fourth spliced pole and the second dysmorphism curved plate, so make have a certain distance between first connecting portion and second connecting portion and the crooked bottom plate, be convenient for bone cement in first shaping clearance 30 shaping to and after the shaping of femoral condyle spacer, first connecting portion and second connecting portion can not influence the clearance and follow the bone cement that overflows in the first shaping clearance 30.

Preferably, the first connecting column and the fourth connecting column are symmetrically arranged about the center of the curved bottom plate, and the second connecting column and the third connecting column are symmetrically arranged about the center of the curved bottom plate.

As shown in fig. 11, in the first embodiment, the femoral condyle spacer mold further includes a first fixing block, a second fixing block, a first fixing nail, and a second fixing nail, wherein the first fixing block is provided with a third positioning protrusion and a first through hole, and the second fixing block is provided with a fourth positioning protrusion and a second through hole. The first positioning protrusion is inserted into the first positioning notch 12 to connect the first fixing block and the second molding part 15, and the fourth positioning protrusion is inserted into the second positioning notch 13 to connect the second fixing block and the second molding part 15. The first fixing nails pass through the first through holes and are inserted into the human bone so as to fix the first fixing blocks on the human bone. The second fixing nails pass through the second through holes and are inserted into the human bone so as to fix the second fixing blocks on the human bone.

Specifically, the first fixing block further comprises a first plane plate and a first inclined plate, and the second fixing block further comprises a second plane plate and a second inclined plate. The surface of the first flat plate contacting the second molding part 15 is completely adhered to the inner surface of the second molding part 15, and the surface of the second flat plate contacting the second molding part 15 is completely adhered to the inner surface of the second molding part 15. The first inclined plane makes a first angle with the centre line of the curved bottom plate 10 in a direction from the bottom of the curved bottom plate 10 to the top of the curved bottom plate 10, preferably between 90 ° and 145 °. The angle between the second inclined plane and the centre line of the curved bottom plate 10 in the direction from the bottom of the curved bottom plate 10 to the top of the curved bottom plate 10 is a second angle, preferably between 90 ° and 145 °.

Preferably, the first fixing block includes a plurality of first fixing blocks having different thicknesses. The second fixed block comprises a plurality of second fixed blocks, and the thicknesses of the second fixed blocks are different. The first fixed block and the second fixed block have the same structure. The first fixing nail and the second fixing nail are identical in structure and comprise circular plates and pointed protrusions connected with the circular plates, and the pointed protrusions facilitate insertion of the first fixing nail and the second fixing nail into bones of a human body.

The thickness of the first fixing block is 2mm smaller than that of the first positioning block, and the thickness of the second fixing block is 2mm smaller than that of the second positioning block.

In a first embodiment, as shown in fig. 11, the femoral condyle spacer mold further comprises a third plurality of staples. The first forming part 14 is provided with third through holes, the third through holes are arranged in one-to-one correspondence with third fixing nails, the third through holes are arranged on one side of the first forming part 14, which is close to the first convex edge 21, and the second fixing nails penetrate through the third through holes to be fixed with the femoral condyles. Preferably, the third staple and the first staple are identical in structure to the second staple.

Preferably, in an embodiment not shown in the figures, a third channel may also be provided on the side of the first press 23 remote from the second press 24, the third channel being arranged crosswise to the first channel 40 or the second channel 80. And a third mounting part is arranged in the third channel, the third mounting part comprises a plurality of third mounting holes, and the third mounting holes extend from the first extrusion part to the second extrusion part. A third limiting block is arranged in the third installation part and comprises a third inserting column and a third protrusion, and the third inserting column is inserted into the third installation hole. A third positioning notch is formed in the second forming part, a third positioning block is mounted at the third positioning notch, the third positioning block comprises a third positioning protrusion, and the third positioning protrusion is inserted into the third positioning notch to connect the third positioning block with the second forming part 15. The third positioning block includes a plurality of third positioning blocks having different thicknesses. A fourth forming gap is formed between the third limiting block and the bending bottom plate 10, and the third limiting block is movably arranged in the third channel so as to change the size of the fourth forming gap.

Specifically, the femoral condyle spacer mold further comprises a third fixed block and a fourth fixed nail, the third fixed block has the same structure as the first fixed block, and the third fixed block is inserted into the third positioning notch. The fourth staple is identical in structure to the first staple. The thickness of the third fixing block is smaller than the thickness of the third positioning block by 2mm.

Preferably, as shown in fig. 3, 9, 10 and 12, in the first embodiment, a fourth passage is provided on a side of the second pressing portion 24 away from the first pressing portion 23, the fourth passage being disposed to intersect with the first passage or the second passage. And a fourth mounting part is arranged in the fourth channel, the fourth mounting part comprises a plurality of fourth mounting holes, and the fourth mounting holes extend from the first extrusion part to the second extrusion part. A fourth limiting block is arranged in the fourth installation part and comprises a fourth inserting column and a fourth bulge, and the fourth inserting column is inserted into the fourth installation hole. A fourth positioning notch is formed in the second forming part, a fourth positioning block is mounted at the fourth positioning notch, the fourth positioning block comprises a fourth positioning protrusion, and the fourth positioning protrusion is inserted into the fourth positioning notch to connect the fourth positioning block with the second forming part 15. The fourth locating blocks comprise a plurality of fourth locating blocks with different thicknesses. A fifth forming gap is formed between the fourth limiting block and the bending bottom plate, and the fourth limiting block is movably arranged in the fourth channel so as to change the size of the fifth forming gap.

Specifically, the femoral condyle spacer mold further comprises a fourth fixed block and a fifth fixed nail, the fourth fixed block is identical to the first fixed block in structure, and the fourth fixed block is inserted into the fourth positioning notch. The fifth staple has the same structure as the first staple. The thickness of the fourth fixing block is smaller than that of the fourth positioning block by 2mm.

Preferably, as shown in fig. 3, 9, 10 and 12, in the first embodiment, a fifth channel may be further provided on a side of the second pressing portion 24 away from the first pressing portion 23, the fifth channel being disposed to intersect with the first channel or the second channel or the fourth channel. A fifth mounting portion is disposed in the fifth channel, the fifth mounting portion includes a plurality of fifth mounting holes, and the fifth mounting holes extend from the first pressing portion to the second pressing portion. A fifth limiting block is arranged in the fifth installation part and comprises a fifth inserting column and a fifth bulge, and the fifth inserting column is inserted into the fifth installation hole. A fifth positioning notch is formed in the second molding part, a fifth positioning block is mounted at the fifth positioning notch, the fifth positioning block comprises a fifth positioning protrusion, and the fifth positioning protrusion is inserted into the fifth positioning notch to connect the fifth positioning block with the second molding part 15. The fifth positioning blocks comprise a plurality of fifth positioning blocks with different thicknesses. A sixth forming gap is formed between the fifth limiting block and the bending bottom plate, and the fifth limiting block is movably arranged in the fifth channel so as to change the size of the sixth forming gap.

It should be noted that, by changing the sizes of the bone cement formed in the third channel, the fourth channel and the fifth channel, the relative positions of the bone cement spacer and the bone of the human body can be changed, so that the change of the valgus angle and the external rotation angle of the bone cement spacer can be realized, and the force line of the joint of the patient can be restored to the physiological force line position after the bone cement spacer is implanted into the patient, thereby facilitating the restoration of the patient.

Specifically, the femoral condyle spacer mold further comprises a fifth fixed block and a sixth fixed nail, the fifth fixed block has the same structure as the first fixed block, and the fifth fixed block is inserted into the fifth positioning notch. The sixth staple is identical in structure to the first staple. The thickness of the fifth fixing block is smaller than the thickness of the fifth positioning block by 2mm.

Before the bone cement spacer is implanted, the first fixing block, the second fixing block, the third fixing block, the fourth fixing block and the fifth fixing block are mounted on the curved bottom plate 10 and fixed on the femoral condyle of the patient, and the tibial plateau and the curved bottom plate are used for performing joint reduction test.

As shown in fig. 13 to 15, when the joint reduction test is performed, the tibial plateau spacer mold and the femoral condyle spacer mold are attached to each other, the force line frame is mounted to the tibial plateau spacer mold, the force line frame is fixed by using the long needle, and the thicknesses of the first positioning block 110 and the second positioning block 120 are adjusted according to the force line scale display data, so that the force line at the joint of the patient can be restored to the physiological force line position after the femoral condyle spacer and the tibial plateau spacer are mounted to the patient, and the use of the patient and the restoration after the patient operation are facilitated.

The force line frame is provided with the tibia platform placeholder die through the mounting pins, and the mounting pins can be a plurality of cylinders which are arranged in parallel, and can also be at least one triangular pin, a quadrangular prism or a pentagonal prism.

Specifically, the curved bottom plate 10 is fixed on the distal femur bone bed by the first, second, fifth and sixth fixing nails, the entire curved bottom plate 10 is fixed on the femoral condyle bone by the third fixing nail, the joint reduction test is performed in the operation, and the soft tissue tightness and joint angle are adjusted by the thickness of the four pads. The thicknesses of the first, second, fifth and sixth fixed blocks are recorded, so that the thicknesses of the first and second positioning blocks 110 and 120 can be obtained, and thus the required heights of the patches can be obtained.

Preferably, as shown in fig. 10, in the first embodiment, the femoral condyle spacer mold further includes a spacer including a first partition plate and a second partition plate, and a handle connecting the first partition plate and the second partition plate, the handle including an arc plate and a straight plate connected to the arc plate, the arc plate being connected to both the first partition plate and the second partition plate, both the first partition plate and the second partition plate being in an "L" shape. The divider is disposed within the first channel 40 and the second channel 80. The first divider and the second divider are tightly attached to the sidewalls of the first channel 40 and the second channel 80 so that after the bone cement is formed in the first channel and the second channel, the bone cement can be separated from the sidewalls of the first channel 40 and the second channel 80 under the action of the divider, thereby facilitating the disassembly of the femoral condyle spacer from the femoral condyle spacer mold after the formation of the femoral condyle spacer.

Specifically, the femoral condyle spacer mold further comprises a sixth fixed block and a seventh fixed nail, the sixth fixed block has the same structure as the first fixed block, and the sixth fixed block is inserted into the sixth positioning notch. The seventh staple is identical in structure to the first staple.

In the first embodiment, the femoral condyle spacer mold is used as follows:

1. The first fixed block, the second fixed block, the fourth fixed block and the fifth fixed block are connected with the curved bottom plate 10 and then fixed to human bone, the tibia platform is used for contacting the outer surface of the curved bottom plate 10, and joint resetting test is carried out;

2. the first positioning block 110 and the second positioning block 120 are connected to the curved bottom plate 10, and the pressing portion 20 is inserted into the curved bottom plate 10, so that the first adjusting portion 50 and the first positioning block 110 are fitted and inserted into the first mounting portion 41, and the second adjusting portion 70 and the second positioning block 120 are fitted and inserted into the second mounting portion 81, that is, the mounting positions of the first adjusting portion 50 and the second adjusting portion 70 are determined. The position determining steps of the fourth adjusting part and the fifth adjusting part are the same as those of the first adjusting part and the second adjusting part;

3. disassembling the first positioning block 110 and the second positioning block 120, then placing bone cement at the bottom of the curved bottom plate 10, and inserting the pressing part 20 into the curved bottom plate 10 to realize the molding of the femoral condyle spacer;

4. The use of a divider to separate the bone cement from the first and second channels 40, 80 and the third and fifth channels facilitates removal of the nip 20;

5. the connection pins are removed, and then the third pressing part 26 is taken out in a direction from the bottom of the curved bottom plate 10 to the top of the curved bottom plate 10, and then the first pressing part 23 and the second pressing part 24 are sequentially moved from the side of the curved bottom plate 10 toward the center of the curved bottom plate 10 until the first pressing part 23 and the second pressing part 24 can be taken out in a direction from the bottom of the curved bottom plate 10 to the top of the curved bottom plate 10.

Embodiment two:

it should be noted that, as shown in fig. 6 and 7, in the second embodiment, the second embodiment is different from the first embodiment in that the assembly block 100 is detachably disposed on the pressing portion 20, and the first adjusting portion 50 and the second adjusting portion 70 are the first baffle 53 and the second baffle 73, respectively, and neither the first mounting hole 411 nor the second mounting hole 811 are disposed. In the second embodiment, the pressing portion 20 is a unitary structure.

As shown in fig. 6 and 7, in the second embodiment, the assembly block 100 is detachably provided on the nip 20. The above arrangement allows the block 100 to be removed from the press-fit portion 20 after the bone cement is molded in the first and second channels 40, 80, and the press-fit portion 20 can be moved from the bottom of the accommodating recess 11 to the top of the accommodating recess 11 until the press-fit portion 20 is completely removed from the curved bottom plate 10, i.e., after the femoral condyle spacer is molded, the press-fit portion 20 is separated from the curved bottom plate 10.

It should be noted that, when the assembly block 100 is detachably disposed, the pressing portion 20 may be an integral structure. The assembly block is inserted into the press-fit portion 20 by a trapezoidal pin or a triangular pin so that the position of the assembly block 100 does not change after installation.

Preferably, the assembly blocks 100 are provided on both sides of the press-fit 20 which are not surrounded by the curved base plate 10.

As shown in fig. 6 and 7, in the second embodiment, the assembly block 100 is provided with a plurality of first grooves 101 and a plurality of second grooves 102, the plurality of first grooves 101 are provided at intervals on the side of the assembly block 100 facing the first passage 40, the plurality of second grooves 102 are provided at intervals on the side of the assembly block 100 facing the second passage 80, the first regulating portion 50 is the first shutter 53, the second regulating portion 70 is the second shutter 73, the first shutter 53 is selectively inserted into one of the plurality of first grooves 101, and the second shutter 73 is selectively inserted into one of the plurality of second grooves 102. The size of the second molding gap 60 can be changed under the action of the first groove 101 and the first baffle 53, and the size of the bone cement molded in the first channel 40 can be changed, so that the bone cement molded in the second molding gap 60 can fill defect parts with different sizes on bones of a human body after the femoral condyle spacer is molded. The size of the third molding gap 90 can be changed under the action of the second groove 102 and the second baffle 73, so that the size of the bone cement molded in the second channel 80 can be changed, and the bone cement molded in the third molding gap 90 can fill defect parts with different sizes on bones of a human body after the femoral condyle spacer is molded.

Preferably, the gaps between the plurality of first grooves and the plurality of second grooves are 2mm. Of course, in the embodiment not shown in the drawings, the gaps between the plurality of first grooves and the plurality of second grooves may be 0.5mm, 1mm, 1.5mm, 3mm, 4mm, 5mm, or any other value.

As shown in fig. 4 and 5, in the second embodiment, the femoral condyle spacer mold further includes a first positioning block 110, the first positioning block 110 is detachably connected to the curved bottom plate 10, the first positioning block 110 is capable of extending into the first channel 40, and the first stopper 51 is configured to determine the position of the first stopper 51 in the first channel 40 by being in fit with the first positioning block 110. The above arrangement facilitates determining the position of the first stopper 51 within the first passage 40 and thus the size of the second molding gap 60, i.e., the size of the bone cement molded within the second molding gap 60.

Specifically, the first positioning blocks 110 are plural, and the thicknesses of the plural first positioning blocks 110 are different. The first positioning blocks 110 with different thicknesses are connected to the curved bottom plate 10, so that the installation position of the first limiting block 51 attached to the first positioning block 110 in the first channel 40 is changed, the size of the second molding gap 60 is changed, and finally the size of bone cement molded in the second molding gap 60 is changed.

Embodiment III:

as shown in fig. 13 to 15, in the third embodiment, unlike the second embodiment, a movable block is provided on the side of the pressing portion 20 on the side where the assembly block 100 is provided and on the side close to the first molding portion 14, a first positioning notch 12 and a second positioning notch 13 are not provided on the curved base plate 10 and a first positioning projection 111 is not provided on the first positioning block 110, a second positioning projection 121 is not provided on the second positioning block 120, a first fixing pin is provided on the first positioning block 110 and is perpendicular to the pressing portion 20 in the direction from the bottom of the curved base plate 10 to the bottom of the pressing portion 20, and a second fixing pin is provided on the second positioning block 120 and is perpendicular to the pressing portion 20 in the direction from the second molding portion 15 to the first molding portion 14.

Specifically, the movable block is detachably connected to the pressing portion 20, and a mounting column is provided on a side of the movable block facing the pressing portion 20, and the mounting column is a trapezoid block or a triangular prism block, so that the movable block is conveniently mounted to the pressing portion 20.

Preferably, the distance between the surface of the side, on which the mounting post is provided, of the movable block to the side, on which the mounting post is not provided, and the side away from the center line of the pressing portion in the direction from the second molding portion 15 to the first molding portion 14 and the center line of the pressing portion 20 is gradually reduced, so that the appearance of the movable block can be flush with the appearance of the femoral condyle, and the removal of the excessive bone cement after the bone cement spacer is molded is facilitated.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A femoral condyle spacer mold, comprising:

a curved bottom plate (10) having a receiving recess (11);

a pressing part (20), wherein the pressing part (20) can be inserted into the accommodating concave part (11) in a pluggable manner, and when the pressing part (20) is inserted into the bending bottom plate (10), a first forming gap (30) is formed between the pressing part (20) and the bending bottom plate (10);

a first channel (40) provided on the nip (20), an opening of the first channel (40) being provided on a surface of the nip (20) and facing the curved bottom plate (10);

A first adjusting portion (50), the first adjusting portion (50) being movably disposed within the first passage (40), a second molding gap (60) communicating with the first molding gap (30) being formed between the first adjusting portion (50) and the curved bottom plate (10), the first adjusting portion (50) being moved to adjust a size of the second molding gap (60);

the femoral condyle spacer mold further comprises a second adjusting part (70) and a second channel (80), wherein the second channel (80) is arranged on the pressing part (20), an opening of the second channel (80) is arranged on the surface of the pressing part (20) and faces the curved bottom plate (10), the first channel (40) and the second channel (80) are arranged in a crossing mode, the second adjusting part (70) is movably arranged in the second channel (80), a third forming gap (90) communicated with the first forming gap (30) is formed between the second adjusting part (70) and the curved bottom plate (10), and the second adjusting part (70) moves to adjust the size of the third forming gap (90).

2. The femoral condyle spacer mold of claim 1, wherein an end of the receiving recess (11) is disposed open, a side of the nip (20) is disposed corresponding to the end of the receiving recess (11), and the first channel (40) and the second channel (80) are disposed on the side of the nip (20).

3. The femoral condyle spacer mold of claim 1, wherein a notch structure (205) is provided on a side of the press-fit (20), the femoral condyle spacer mold further comprising a block (100) disposed within the notch structure (205), the block (100) forming the first channel (40) and the second channel (80) with an inner wall of the notch structure (205).

4. The femoral condyle spacer mold of claim 1, wherein a first mounting portion (41) is disposed within the first channel (40), the first mounting portion (41) extending from a side of the nip (20) toward a center direction of the nip (20), the first mounting portion (41) comprising a plurality of first mounting holes (411), the first adjustment portion (50) comprising a first stopper (51) and a first peg (52) connected to the first stopper (51), the first peg (52) being inserted into the first mounting hole (411) to connect the first adjustment portion (50) with the nip (20); be provided with second installation department (81) in second passageway (80), second installation department (81) by pressfitting portion (20) side face pressfitting portion (20) central direction extends, second installation department (81) include a plurality of second mounting holes (811), second regulation portion (70) include second stopper (71) and with second spliced pole (72) that second stopper (71) are connected, second spliced pole (72) are inserted second mounting hole (811) are connected second regulation portion (70) with pressfitting portion (20).

5. A femoral condyle spacer mold in accordance with claim 3, wherein the block (100) is removably disposed on the nip (20).

6. A femoral condyle spacer mold in accordance with claim 3, wherein said assembly block (100) is provided with a plurality of first slots (101) and a plurality of second slots (102), a plurality of said first slots (101) being disposed at intervals on a side of said assembly block (100) facing said first channel (40), a plurality of said second slots (102) being disposed at intervals on a side of said assembly block (100) facing said second channel (80), said first adjustment portion (50) being a first baffle (53), said second adjustment portion (70) being a second baffle (73), said first baffle (53) being selectively insertable into one of a plurality of said first slots (101), said second baffle (73) being selectively insertable into one of a plurality of said second slots (102).

7. The femoral condyle spacer mold of claim 4, further comprising a first positioning block (110), the first positioning block (110) being removably coupled to the curved base plate (10), the first positioning block (110) being extendable into the first channel (40), the first stop block (51) being configured to determine a position of the first stop block (51) within the first channel (40) by a snug fit with the first positioning block (110).

8. The femoral condyle spacer mold of claim 7, wherein a first positioning notch (12) is provided on a sidewall of the curved bottom plate (10), the first positioning block (110) further comprises a first positioning protrusion (111), the first positioning protrusion (111) is provided on a side of the first positioning block (110) away from a center of the press-fit portion (20), and the first positioning protrusion (111) is inserted into the first positioning notch (12) to connect the first positioning block (110) with the curved bottom plate (10).

9. The femoral condyle spacer mold of claim 4, further comprising a second locating block (120), the second locating block (120) being removably coupled to the curved base plate (10), the second locating block (120) being extendable into the second channel (80), the second stop block (71) being configured to determine a position of the second stop block (71) within the second channel (80) by a snug fit with the second locating block (120).

10. The femoral condyle spacer mold of claim 9, wherein a second positioning notch (13) is further provided on a side wall of the curved bottom plate (10), the second positioning block (120) further comprises a second positioning protrusion (121), the second positioning protrusion (121) is provided on a side of the second positioning block (120) away from the center of the press-fit portion (20), and the second positioning protrusion (121) is inserted into the second positioning notch (13) to connect the second positioning block (120) with the curved bottom plate (10).

11. The femoral condyle spacer mold of any one of claims 1-10, wherein a first ledge (21) and a second ledge (22) are provided on a sidewall of the compression portion (20) facing the curved bottom plate (10), the first ledge (21) and the second ledge (22) being located on two sides of the compression portion (20), respectively, and an upper edge of the curved bottom plate (10) being in abutting engagement with the first ledge (21) and the second ledge (22), respectively.

12. The femoral condyle spacer mold of claim 3, wherein the press-fit portion (20) comprises a first press-fit portion (23), a second press-fit portion (24), and a connector (25), the connector (25) connecting the first press-fit portion (23) and the second press-fit portion (24), the first channel (40), the second channel (80), and the block (100) being disposed on a surface of the first press-fit portion (23) remote from the second press-fit portion (24).

13. The femoral condyle spacer mold of claim 12, wherein the press-fit portion (20) further comprises a third press-fit portion (26), the third press-fit portion (26) disposed between the first press-fit portion (23) and the second press-fit portion (24), the connector (25) extending through the first press-fit portion (23), the second press-fit portion (24), and the third press-fit portion (26) to connect the first press-fit portion (23), the second press-fit portion (24), and the third press-fit portion (26).

14. The femoral condyle spacer mold of any one of claims 1-10, wherein the curved bottom plate (10) comprises a first molding portion (14) and a second molding portion (15), the first molding portion (14) and the second molding portion (15) being detachably connected, an intersection of the first molding portion (14) and the second molding portion (15) being located at a bottom of the press-fit portion (20).