Tibial Tray Trial Components

Abstract

The present invention discloses a tibial tray trial mold assembly, comprising a tibial tray trial mold and a tibial tray trial mold holder, the tibial tray trial mold is provided with a tibial drill hole and a connecting hole and has a first surface and a second surface relative to each other, the first surface is in contact with the tibial osteotomy surface, the tibial drill hole extends from the first surface to the second surface, and the tibial tray trial mold holder comprises a main body, a rotating member and a handle, the handle is rotatably mounted on the main body through the rotating member, the front end surface of the main body is provided with a locking column, the locking column cooperates with the connecting hole, and the connecting hole and the locking column are driven to lock or unlock each other by operating the handle. The tibial tray trial mold assembly of the present invention can achieve less osteotomy and efficient and accurate surgical procedures.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a tibial tray trial mold assembly. Background Art

[0002] In some orthopedic surgeries, part of the proximal tibia bone needs to be cut off to install a prosthesis, and the shape of the cut off and the position of the prosthesis should match. Summary of the invention

[0003] The purpose of the present invention is to provide a tibial tray trial mold assembly to improve the stability and accuracy during tibial osteotomy and to solve the problem of better prosthesis matching.

[0004] In order to solve the above problems, according to one aspect of the present invention, a tibial tray trial mold assembly is provided, the tibial tray trial mold assembly comprising a tibial tray trial mold and a tibial tray trial mold holder, the tibial tray trial mold is used to be fixed on the tibial osteotomy surface, the tibial tray trial mold holder is lockably connected to the tibial tray trial mold, wherein

[0005] The tibial tray trial mold is provided with a tibial drill hole and a connecting hole and has a first surface and a second surface opposite to each other, the first surface contacts the tibial osteotomy surface, and the tibial drill hole extends from the first surface to the second surface, and

[0006] The tibial tray trial mold holder includes a main body, a rotating part and a handle. The handle is rotatably mounted on the main body through the rotating part. The front end surface of the main body is provided with a locking column. The locking column cooperates with the connecting hole. The connecting hole and the locking column are driven to lock or unlock each other by operating the handle.

[0007] In one embodiment, the tibial support trial mold is also provided with two bone chip grooves connected to the tibial drill hole, and the first surface is also formed with sinking parts on both sides of the tibial drill hole, and the two bone chip grooves are respectively located in the sinking parts on both sides of the tibial drill hole and extend from the sinking parts to the second surface of the tibial support trial mold.

[0008] In one embodiment, a fixing hole is further provided in the sinking portion, through which the tibial support trial mold is fixed to the tibia, and the sinking portion is also provided with a guide tower hole to cooperate with the tibial forming guide tower; and / or a protruding block is also provided in front of the sinking portion, and the protruding block is provided with an oblique nail hole, through which the tibial support trial mold is further fixed to the tibia; and / or a step portion is provided on the inner wall of the tibial drill hole.

[0009] In one embodiment, the main body includes a gripping portion and a functional portion which are integrally formed, the gripping portion is used for hand-held operation, and the functional portion is used for mounting a rotating member and a handle.

[0010] In one embodiment, the side of the grip portion is provided with a plurality of arcuate grooves, the plurality of arcuate grooves extend along the length direction of the grip portion and cover the entire side of the grip portion, and / or

[0011] The gripping portion is further provided with a material reduction hole extending along the length direction of the gripping portion, and an alignment hole is provided in front of the material reduction hole.

[0012] In one embodiment, the functional part is provided with a first part and a second part which are interlocked with each other, and the front end faces of the first part and the second part are each provided with a locking column, wherein the functional part extends a certain distance from the gripping part to form an opening in the middle, and the first part and the second part extend forward from the opening to form a detachable structure which is interlocked with each other.

[0013] In one embodiment, the second part is provided with a rotating member mounting portion, and the rotating member mounting portion includes a rotating member mounting groove formed on the surface of the second part, and a first rotating column mounting hole is provided in the rotating member mounting groove, and the first rotating column mounting hole cooperates with the second rotating column mounting hole on the rotating member and the third rotating shaft mounting hole on the handle, so that the rotating member, the handle and the main body are rotatably connected through the rotating column.

[0014] In one embodiment, a cavity is formed between a side portion of the rotating member mounting portion facing the first portion and an inner wall of the first portion.

[0015] In one embodiment, the first part and the second part are provided with a first matching part between the opening and the rotating member mounting part, and the first matching part includes a first protrusion integrally extending from the inner surface of the first part and a second protrusion integrally extending from the inner surface of the second part, and there is a gap between the first protrusion and the second protrusion.

[0016] In one embodiment, the first part and the second part are further provided with a second matching part in front of the rotating member mounting part, and the second matching part includes a first bending part integrally extending from the inner surface of the first part and a second bending part integrally extending from the inner surface of the second part, and the first bending part and the second bending part are embedded in each other to form a gap.

[0017] In one embodiment, the handle includes an integrally formed connecting portion and an operating portion, the connecting portion is provided with a connecting groove, ears are formed on both sides of the connecting groove, the connecting groove cooperates with the functional portion of the main body, and the ears are used to clamp on both sides of the functional portion.

[0018] In one embodiment, the operating part extends integrally from the connecting part for a certain distance and then separates into a first operating part and a second operating part, an opening is formed between the first operating part and the second operating part, and / or the upper surface and / or the lower surface of the first operating part and the second operating part are provided with multiple anti-slip grooves.

[0019] In one embodiment, the rotating member includes a first rotating part and a second rotating part, the thickness of the first rotating part is smaller than the thickness of the second rotating part, thereby forming a step at the connection between the first rotating part and the second rotating part, wherein the first rotating part is installed in the groove of the rotating member mounting part, and the second rotating part is installed in the cavity.

[0020] In one embodiment, the ear portion is provided with a third rotating column mounting hole and a second pin hole, the second rotating portion is provided with a first pin hole that penetrates the entire depth of the second rotating member from the upper surface and extends to the lower surface, and the second pin hole cooperates with the first pin hole to fix the handle to the rotating member.

[0021] In one embodiment, a side portion of the rotating member mounting portion facing the first portion is provided with a first arc-shaped contour, and an inner side wall of the second rotating portion is formed with a second inner contour matching the first arc-shaped contour.

[0022] In one embodiment, the outer side wall of the first rotating part is provided with a first outer contour matching with the inner wall of the groove of the rotating member mounting part, and the first rotating part is further provided with the second rotating column mounting hole, and

[0023] A second outer contour is formed on the outer wall of the second rotating part, and the second outer contour cooperates with the inner wall of the first part in the cavity and drives the first part and the second part to move away from or approach each other, thereby realizing mutual locking or unlocking of the tibial tray trial mold holder and the tibial tray trial mold.

[0024] The tibial tray trial mold assembly of the present invention can provide better motion stability, better patellofemoral function, better prosthesis matching, less osteotomy and efficient and accurate surgical procedures. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1-Figure 2 They are three-dimensional exploded views of the tibial tray trial mold assembly of the present invention from different viewing angles.

[0026] Figure 3-4 They are three-dimensional images of the tibial tray trial model from different angles.

[0027] Figure 5-6 These are stereoscopic images of the tibial tray trial holder from different viewing angles.

[0028] Figure 7It is a three-dimensional exploded view of the tibial tray trial mold holder.

[0029] Figure 8-Figure 9 It is a stereogram of the rotating part from different viewing angles. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0031] In the following description, certain specific details are set forth for the purpose of illustrating the various disclosed embodiments to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0032] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0033] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0034] The present invention relates to a tibial tray trial mold and a tibial tray trial mold holder and components thereof in a total knee replacement system. The total knee replacement system can provide patients with postoperative satisfaction, improve the doctor's intraoperative experience, and truly achieve smooth movement, which can bring better stability, better patellar function, better prosthesis matching, less osteotomy performance, and efficient and accurate surgical procedures.

[0035] The total knee replacement surgery mainly includes the steps of incision and exposure, distal femoral osteotomy, proximal tibial osteotomy, extension gap inspection, measurement of femoral model and external rotation, femoral preparation, intercondylar osteotomy, tibial preparation, trial mold reduction, patellar osteotomy and preparation, prosthesis implantation and incision suturing. The tibial tray trial mold and tibial tray trial mold holder and the components thereof of the present invention are used in the "tibial preparation" step.

[0036] Figure 1-Figure 2 They are three-dimensional exploded views of the tibial tray trial mold assembly 100 of the present invention from different perspectives. Figure 1-2 The tibial tray trial mold assembly 100 of the present invention is described. Figure 1-2 As shown, the tibial tray trial mold assembly 100 includes a tibial tray trial mold 10 and a tibial tray trial mold holder 20. The tibial tray trial mold 10 is fixed to the tibial osteotomy surface, and the tibial tray trial mold holder 20 is lockably connected to the tibial tray trial mold 10. The tibial tray trial mold 10 and the tibial tray trial mold holder 20 are described in detail below in conjunction with the accompanying drawings.

[0037] Figure 3-4 They are three-dimensional images of the tibial tray trial mold 10 from different viewing angles. Figure 3-4 As shown, the tibial tray trial mold 10 has a plate-like body as a whole, and the plate-like body has a first surface 11 (also called the front surface) and a second surface 12 (also called the back surface) opposite to each other, the second surface 12 is used to contact the proximal tibia osteotomy surface, and the first surface 11 faces the distal femur. The second surface 12 is a flat surface, and the first surface 11 is provided with various structures. Definition Figure 3-4 The upper side shown is the rear, posterior or posterior portion of the tibial tray trial. Figure 3-4 The lower part shown is the front, front end or front part of the tibial tray trial mold, and the rear of the tibial tray trial mold 10 is provided with an arc opening 13, and the two sides of the arc opening 13 respectively form the periphery of the tibial tray trial mold and extend to the front part of the tibial tray trial mold, thereby forming an arc-shaped periphery as a whole, and the arc-shaped periphery of the tibial tray trial mold is disconnected at the front part, and a protrusion 14 is formed at the front part, and the protrusion 14 has a smooth end face and cooperates with the front end face of the tibial tray trial mold holder 20. The end face of the protrusion 14 is provided with two connecting holes 141, and the connecting holes 141 extend a certain distance inside the tibial tray trial mold in a direction perpendicular to the end face, and are used to cooperate with the locking column 217 of the tibial tray trial mold holder 20.

[0038] A tibial drilling hole 111 is provided in the middle of the first surface 11 of the tibial tray trial mold 10. The tibial drilling hole 111 extends from the first surface 11 to the second surface 12, and a step portion 112 is formed on the inner wall. The tibial drilling hole 111 and the step portion 112 are used to cooperate with a tibial drill (not shown) and limit the drilling depth of the tibial drill in the tibia. The first surface 111 is also provided with two bone chip grooves 113, which are respectively located on both sides of the tibial drilling hole 111 and communicated with the tibial drilling hole 111. The first surface 11 is also formed with a sinking portion 114 on both sides of the tibial drilling hole 111, and the sinking portion 114 cooperates with the front end of a tibial molding guide tower (not shown), wherein the tibial molding guide tower can cooperate with the tibial drill, for example. The two bone chip grooves 113 are respectively located in the sinking portions 114 on both sides of the tibial drilling hole 111 and extend from the sinking portion 114 to the second surface 12 of the tibial tray trial mold to form a through groove. The rear part of the sinking part 114 is also provided with a fixing hole 1141, which cooperates with the fixing nail so that the tibial tray trial mold is fixed on the tibia through the fixing nail. The front part of the sinking part 114 is provided with a guide tower hole 1142 to cooperate with the fixing nail of the tibial forming guide tower, so that the tibial forming guide tower and the tibial tray trial mold are fixed to each other. The front part of the sinking part 114 is also provided with a protruding block 15, and the protruding block 15 is provided with an oblique nail hole 151. When necessary, the tibial tray trial mold can be further fixed on the tibia through the cooperation of the oblique nail and the oblique nail hole 151.

[0039] Figure 5-6 is a stereoscopic view of the tibial tray trial mold holder 20 from different viewing angles, Figure 7 2 is a perspective exploded view of the tibial tray trial mold holder 20. Figure 5-7 As shown, the tibial tray trial mold holder 20 includes a main body 21, a rotating member 22 and a handle 23, and the handle 23 is rotatably mounted on the main body 21 through the rotating member 22. The main body 21 has a flat structure and includes a gripping portion 211 and a functional portion 212 formed in one piece, the gripping portion 211 extends with a substantially uniform first width and a first thickness, and the functional portion 212 extends with a substantially uniform second width and a second thickness, the first width is greater than the second width, and the first thickness is greater than the second thickness, that is, the width and thickness of the functional portion 212 are reduced relative to the gripping portion 211, so as to facilitate cooperation with the rotating member 22, the gripping portion 211 is mainly used for hand-held operation, and the functional portion 212 is used to install the rotating member 23 and the handle 22.

[0040] For easy holding, the side of the gripping portion 211 is provided with a plurality of arc grooves 2111. Preferably, the plurality of arc grooves 2111 extend along the length direction of the gripping portion 211 and cover the entire side of the gripping portion 211. The gripping portion 211 is also provided with a material reduction hole 2112 extending along the length direction of the gripping portion 211. A first alignment hole 2113 and a second alignment hole 2114 are provided in front of the material reduction hole 2112. An alignment rod (not shown) can be inserted into the first alignment hole 2113 or the second alignment hole 2114 to check the tibia alignment.

[0041] Reference Figure 7 , the functional part 212 is provided with a first part 2121 and a second part 2122 which fit in with each other. Specifically, the functional part 212 extends a certain distance from the gripping part 211 and forms an opening 213 in the middle. The opening 213 is preferably formed as a round hole. The functional part 212 extends forward from the opening 213 and forms a first part 2121 and a second part 2122 which fit in with each other and are separable. The second part 2122 is provided with a rotating member mounting part 2123. Specifically, the rotating member mounting part 2123 is a groove formed on one surface of the second part 2122. A first rotating column mounting hole 2124 is provided in the groove. The first rotating column mounting hole 2124 cooperates with the second rotating column mounting hole on the rotating member 22 and the third rotating shaft mounting hole on the handle 23, so that the rotating member 22, the handle 23 and the main body 21 are rotatably connected through the rotating column. The side of the rotating member mounting portion 2123 facing the first portion 2121 is provided with a first arc profile 2125, and the first arc profile 2125 cooperates with the second inner profile 2222 on the rotating member 23. A cavity 2126 is formed between the first arc profile 2125 and the inner wall of the first portion 2121, and the cavity 2126 is used to install the second rotating portion 222 of the rotating member 22. The inner side wall of the first portion 2121 in the cavity 2126 cooperates with the second outer profile of the rotating member, and drives the first portion and the second portion to move away from or approach each other, thereby realizing the mutual locking or unlocking of the tibial tray trial mold holder and the tibial tray trial mold.

[0042] The first part 2121 and the second part 2122 are provided with a first matching part 214 between the opening 213 and the rotating member mounting part 2123. The first matching part 214 includes a first protrusion 2141 formed by integrally extending from the inner surface of the first part 2121 and a second protrusion 2142 formed by integrally extending from the inner surface of the second part 2122. There is a gap between the first protrusion 2141 and the second protrusion 2142. The first part 2121 and the second part 2122 are also provided with a second matching part 215 in front of the rotating member mounting part 2123. The second matching part 215 includes a first bending part 2151 formed by integrally extending from the inner surface of the first part 2121 and a second bending part 2152 formed by integrally extending from the inner surface of the second part 2122. The first bending part 2151 and the second bending part 2152 are mutually fitted and form a gap. A groove 216 is formed in front of the second matching part 215. The groove 216 is formed between the first part 2121 and the second part 2122. A locking column 217 is respectively disposed on the front end surface of the first part 2121 and the second part 2122. The tibial tray trial mold 10 is connected to the tibial tray trial mold holder 20 by inserting the locking column 217 into the connecting hole 141 of the tibial tray trial mold 10.

[0043] Continue to refer to Figure 7 The handle 23 includes an integrally formed connection portion 231 and an operating portion 232. The connection portion 231 is integrally extended from the lower surface of the operating portion 232 in a direction substantially perpendicular to the lower surface of the operating portion 232, and is provided with a groove 2311 extending substantially perpendicular to the lower surface of the operating portion 232. The groove 2311 is matched with the functional portion 212 of the main body 21. Ears 2312 are formed on both sides of the groove 2311. The ears 2312 are used to be clamped on both sides of the functional portion 212 of the main body 21. The ear 2312 is also provided with a third rotating column mounting hole 2313 and a second pin hole 2314. The third rotating column mounting hole 2313 is matched with the first rotating column mounting hole 2124 on the functional portion 212 of the main body 21 and the second rotating column mounting hole 2212 on the rotating member 22. The second pin hole 2314 is used to match with the first pin hole 2223 on the rotating member 22.

[0044] Continue to refer to Figure 7The operating portion 232 extends from the connecting portion 231 for a certain distance and then separates into a first operating portion 2321 and a second operating portion 2322. An opening 2323 is formed between the first operating portion 2321 and the second operating portion 2322. The upper and lower surfaces of the first operating portion 2321 and the second operating portion 2322 are provided with a plurality of anti-slip grooves 2324 to facilitate operation of the operating portion 232. The overall width of the operating portion 232 gradually increases from the end close to the connecting portion 231 to the end away from the connecting portion 231. That is, the width of the operating portion 232 at the position close to the connecting portion 231 is equal to that of the connecting portion 231, and gradually increases in the direction away from the connecting portion 231, so that the outline of the operating portion 232 forms an approximate triangle as a whole.

[0045] Figure 8-Figure 9 2 are three-dimensional diagrams of the rotating member 22 from different viewing angles. Figure 8-9 As shown, the rotating member 22 as a whole includes an integrally formed first rotating portion 221 and a second rotating portion 222, the first rotating portion 221 is thinner, the second rotating portion 222 is thicker, and a step is formed at the connection between the first rotating portion 221 and the second rotating portion 222. The first rotating portion 221 is installed in the groove of the rotating member mounting portion 2123, and the second rotating portion 222 is installed in the cavity 2126 formed between the side of the groove and the inner wall of the second portion 212. A second outer contour 2221 is formed on the outer wall of the second rotating portion 222 to match the inner wall of the first portion 2121 in the cavity 2126, and a second inner contour 2222 is formed on the inner wall of the second rotating portion 222 to match the first arc contour 2125 of the rotating member mounting portion 2123. The second rotating portion 222 is also provided with a first pin hole 2223 that runs through the entire depth of the second rotating member from the upper surface and extends to the lower surface to match the second pin hole 2314 on the handle 23. The outer wall of the first rotating part 221 is provided with a first outer profile 2211 that cooperates with the inner wall of the groove of the rotating member mounting part 2123. The first rotating part 221 is also provided with a second rotating column mounting hole 2212 to cooperate with the first rotating column mounting hole 2124 of the rotating member mounting part 2123 and the third rotating column mounting hole 2313 on the handle.

[0046] Return to reference Figure 5-7The rotating member 22 is installed in the rotating member installation part 2123 of the main body 21, the connecting part 231 of the handle 23 is clamped on both sides of the functional part 212 of the main body 21 and the rotating member 22 is clamped in the groove 2311 of the handle 23, and the rotating column 24 is sequentially passed through the third rotating column installation hole 2313 on one ear 2312 of the handle 23, the second rotating column installation hole 2212 of the rotating member 22, the first rotating column installation hole 2124 in the rotating member installation part 2123 and the third rotating column installation hole 2313 on the other ear 2312 of the handle 23, so that the handle 23, the rotating member 22 and the main body 21 are rotatably connected. The pin 25 is sequentially inserted into the first pin hole 2314 on one ear 2312 of the handle 23, the first pin hole 2223 of the rotating member 22 and the first pin hole 2314 on the other ear 2312 of the handle 23, so that the handle 23 is connected to the rotating member 22. Since the handle 23 and the rotating member 22 are respectively connected by the pin 25 and the rotating shaft 24, the handle 23 and the rotating member 22 no longer move relative to each other, so that the rotating member 22 can be driven by the handle 23 to move relative to the main body 21, so that the first part 2121 and the second part 2122 of the functional part 212 of the main body 21 are closer to or farther away from each other, that is, the gap between the first protrusion 2141 and the second protrusion 2142 of the first matching part 214 of the first part 2121 and the second part 2122 and the first bending part 2151 and the second bending part 2152 of the second matching part 215 is increased or decreased, thereby locking or unlocking the tibial tray trial mold 10 and the tibial tray trial mold holder 20 with each other.

[0047] Combination Figure 1-9, loosen the handle 22 of the assembled tibial tray trial mold holder 20, i.e., lift the operating portion 232 of the handle 22 (this process is called the unlocking process), then insert the locking column 217 into the connecting hole 141 of the tibial tray trial mold 10, and then tighten the handle 22 of the tibial tray trial mold holder 20, i.e., press the operating portion 232 of the handle 22 to make it close to the main body 21, so as to lock the tibial tray trial mold 10 and the tibial tray trial mold holder 20 with each other. When unlocking is required, just loosen the handle 22 of the tibial tray trial mold holder 20 to achieve unlocking. Specifically, when the operating part 232 of the handle 22 is lifted, the rotating member 22 is driven to rotate, and the second outer contour 2221 of the rotating member 22 moves relative to the inner wall of the first part 2121 of the functional part 212, so that the part of the second outer contour 2221 closer to the rotation axis (i.e., the rotating column 25) contacts the inner wall of the first part 2121 of the functional part 212, thereby reducing the gap between the first part 2121 and the second part 2122 of the functional part 212, so that the distance between the two locking columns 217 becomes smaller, thereby realizing the unlocking function. When the operating part 232 of the handle 22 is pressed, the rotating member 22 is driven to rotate, and the second outer contour 2221 of the rotating member 22 moves relative to the inner wall of the first part 2121 of the functional part 212, so that the part of the second outer contour 2221 farther from the rotation axis (i.e., the rotating column 25) contacts the inner wall of the first part 2121 of the functional part 212, thereby increasing the gap between the first part 2121 and the second part 2122 of the functional part 212, so that the distance between the two locking columns 217 becomes larger, and is fixed in the connecting hole 141 of the tibial tray trial mold 10, so that the tibial tray trial mold 10 and the tibial tray trial mold holder 20 are locked with each other.

[0048] When in use, first place the tibial tray trial mold on the tibial osteotomy surface, select the position and model of the tibial tray trial mold, so that the tibial tray trial mold can maximize the coverage of the tibial surface and avoid rotating out. When the tibial tray trial mold is rotated and positioned, the central marking line of the tibial tray trial mold can be aligned with the central inner third of the tibial tubercle. After determining the position, model and rotation of the tibial tray trial mold, two headed nails are driven into the two fixing holes 1141 of the tibial tray trial mold to fix it. After fixing, the tibial tray trial mold holder 10 can be selected to be removed or left in place, and the alignment rod can also be inserted into the alignment hole on the tibial tray trial mold holder 10 to check the tibia alignment. After the tibial tray trial mold is fixed, subsequent steps can be performed, such as connecting the tibial molding guide tower and the tibial drill to drill the tibia, etc.

[0049] The preferred embodiments of the present invention have been described in detail above, but it should be understood that after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A tibial tray trial mold assembly, characterized in that: The tibial tray trial mold assembly comprises a tibial tray trial mold and a tibial tray trial mold holder, wherein the tibial tray trial mold is used to be fixed on the tibial osteotomy surface, and the tibial tray trial mold holder is lockably connected to the tibial tray trial mold, wherein The tibial tray trial mold is provided with a tibial drill hole and a connecting hole and has a first surface and a second surface opposite to each other, the first surface contacts the tibial osteotomy surface, and the tibial drill hole extends from the first surface to the second surface, and The tibial tray trial mold holder comprises a main body, a rotating member and a handle, wherein the handle is rotatably mounted on the main body through the rotating member, and a locking column is provided on the front end surface of the main body, wherein the locking column cooperates with the connecting hole, and the connecting hole and the locking column are driven to be locked or unlocked with each other by operating the handle; The main body comprises a gripping portion and a functional portion which are integrally formed, wherein the gripping portion is used for hand-held operation, and the functional portion is used for mounting a rotating member and a handle; The functional part is provided with a first part and a second part which fit in with each other, and the front end surfaces of the first part and the second part are each provided with a locking column, wherein the functional part extends a certain distance from the gripping part to form an opening in the middle, and the first part and the second part extend forward from the opening to form a separable structure which fits in with each other; The second part is provided with a rotating member mounting portion, the rotating member mounting portion includes a rotating member mounting groove formed on the surface of the second part, a first rotating column mounting hole is provided in the rotating member mounting groove, the first rotating column mounting hole cooperates with the second rotating column mounting hole on the rotating member and the third rotating shaft mounting hole on the handle, so that the rotating member, the handle and the main body are rotatably connected through the rotating column; A cavity is formed between the side of the rotating member installation portion facing the first part and the inner wall of the first part; a first arc-shaped profile is provided on the side of the rotating member installation portion facing the first part; The handle comprises an integrally formed connection portion and an operation portion, the connection portion is provided with a connection groove, ears are formed on both sides of the connection groove, the connection groove cooperates with the functional portion of the body and the ears are used to clamp on both sides of the functional portion; The rotating member comprises a first rotating part and a second rotating part, the thickness of the first rotating part is smaller than the thickness of the second rotating part, so that a step is formed at the connection between the first rotating part and the second rotating part, wherein the first rotating part is installed in the groove of the rotating member installation part, and the second rotating part is installed in the cavity; The ear portion is provided with a third rotating column mounting hole and a second pin hole, the second rotating portion is provided with a first pin hole that penetrates the entire depth of the second rotating portion from the upper surface and extends to the lower surface, and the second pin hole cooperates with the first pin hole to fix the handle and the rotating member; The outer side wall of the first rotating part is provided with a first outer contour matching with the inner wall of the groove of the rotating member mounting part, and the first rotating part is also provided with the second rotating column mounting hole, and A second outer contour is formed on the outer wall of the second rotating part, and the second outer contour cooperates with the inner wall of the first part in the cavity and drives the first part and the second part to move away from or approach each other, thereby realizing mutual locking or unlocking of the tibial tray trial mold holder and the tibial tray trial mold.

2. The tibial tray trial mold assembly according to claim 1, characterized in that: The tibial tray trial mold is also provided with two bone chip grooves connected with the tibial drill hole, and the first surface is also formed with sinking parts on both sides of the tibial drill hole, and the two bone chip grooves are respectively located in the sinking parts on both sides of the tibial drill hole and extend from the sinking parts to the second surface of the tibial tray trial mold.

3. The tibial tray trial mold assembly according to claim 2, characterized in that: The sinking portion is also provided with a fixing hole, through which the tibial support trial mold is fixed on the tibia, and the sinking portion is also provided with a guide tower hole to cooperate with the tibial forming guide tower; and / or a protruding block is also provided in front of the sinking portion, and the protruding block is provided with an oblique nail hole, through which the tibial support trial mold is fixed on the tibia; and / or the inner wall of the tibial drill hole is provided with a step portion.

4. The tibial tray trial mold assembly according to claim 1, characterized in that: The side of the grip portion is provided with a plurality of arc-shaped grooves, the plurality of arc-shaped grooves extend along the length direction of the grip portion and cover the entire side of the grip portion, and / or The gripping portion is further provided with a material reduction hole extending along the length direction of the gripping portion, and an alignment hole is provided in front of the material reduction hole.

5. The tibial tray trial mold assembly according to claim 1, characterized in that: The first part and the second part are provided with a first matching part between the opening and the rotating member mounting part, and the first matching part includes a first protrusion integrally extending from the inner surface of the first part and a second protrusion integrally extending from the inner surface of the second part, and there is a gap between the first protrusion and the second protrusion.

6. The tibial tray trial mold assembly according to claim 1, characterized in that: The first part and the second part are also provided with a second matching part in front of the rotating part mounting part, and the second matching part includes a first bending part integrally extending from the inner surface of the first part and a second bending part integrally extending from the inner surface of the second part, and the first bending part and the second bending part are embedded in each other to form a gap.

7. The tibial tray trial mold assembly according to claim 1, characterized in that: The operating part is integrally extended from the connecting part for a certain distance and then separated into a first operating part and a second operating part, an opening is formed between the first operating part and the second operating part, and the upper surface and / or the lower surface of the first operating part and the second operating part are provided with a plurality of anti-slip grooves.

8. The tibial tray trial mold assembly according to claim 1, characterized in that: A second inner contour matching the first arc contour is formed on the inner side wall of the second rotating portion.

Images