Plasma spraying clamp suitable for single condyle and tool thereof

Abstract

The utility model relates to a plasma spraying clamp suitable for a single condyle and a tool of the plasma spraying clamp. The plasma spraying clamp comprises a rotatable connecting rod, the mounting seat is arranged at the top of the connecting rod; the plurality of mounting bottom plates are detachably mounted on the side wall of the mounting seat and used for placing single-condyle prostheses, the mounting bottom plates comprise bottom plates connected with the side wall of the mounting seat and supporting plates connected with the bottoms of the bottom plates and used for placing the single-condyle prostheses, and transverse first sliding grooves are formed in the bottom plates; the first sliding plate and the second sliding plate are detachably connected with the bottom plate along the two sides of the first sliding groove respectively, and the unicompartmental prosthesis is arranged between the first sliding plate and the second sliding plate. Compared with the prior art, the single-condyle prosthesis spraying device has the advantages of being suitable for single-condyle prostheses of different specifications and sizes, high in spraying efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma spraying, in particular to a plasma spraying fixture and a tooling suitable for a unicompartmental knee prosthesis. Background Art

[0002] The unicompartmental knee prosthesis is an artificial joint replacement device for treating unicompartmental knee arthritis and is part of a partial knee replacement surgery. For the bone-bonding surface of the unicompartmental knee prosthesis, surface treatment is generally required on it to achieve the effect of bone integration. The plasma spraying biocoating has been successfully applied clinically. Plasma spraying is a method of using a plasma source as a heat source to heat materials to a molten or semi-molten state and spraying them onto the surface of a pretreated workpiece at high speed through compressed air to prepare a coating.

[0003] For the sprayed unicompartmental knee prosthesis, it is necessary to clamp it with a suitable fixture. Due to the irregular shape of the unicompartmental knee prosthesis, the fixtures on the current market are provided with different grooved bases for different sizes of unicompartmental knee prostheses. The unicompartmental knee prosthesis is placed in the groove, clamped with screws, and then the base and the plasma spraying work turntable are connected through a connecting rod. However, when using this fixture for spraying, the spraying efficiency is low, the number of unicompartmental knee prostheses placed on one plasma spraying work turntable is small, and it is not universal. Different fixtures are required for different specifications and sizes of unicompartmental knee prostheses. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned existing technologies and provide a plasma spraying fixture and a tooling suitable for a unicompartmental knee prosthesis, which can adapt to different specifications and sizes of unicompartmental knee prostheses and have high spraying efficiency.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] On the one hand, the utility model provides a plasma spraying fixture suitable for a unicompartmental knee prosthesis, including:

[0007] A rotatable connecting rod;

[0008] A mounting seat arranged at the top of the connecting rod;

[0009] A plurality of mounting bottom plates detachably mounted on the side wall of the mounting seat and used for placing the unicompartmental knee prosthesis, including a bottom plate connected to the side wall of the mounting seat, a support plate connected to the bottom of the bottom plate and used for placing the unicompartmental knee prosthesis, and a transverse first chute arranged on the bottom plate;

[0010] And a first sliding plate and a second sliding plate detachably connected to the bottom plate along both sides of the first chute respectively, and the unicompartmental knee prosthesis is placed between the first sliding plate and the second sliding plate.

[0011] Further, the first chute traverses the bottom plate.

[0012] Further, a plurality of vertical second chutes are provided on the side wall of the mounting base, and a first slider that can be inserted into and adapted to the second chutes is provided on the back of the bottom plate.

[0013] Furthermore, the second chutes have a certain distance from the bottom of the mounting base and pass through the top of the mounting base.

[0014] Furthermore, vertical second chutes are provided around the mounting base. When the second chutes are provided around, a single plasma spraying fixture can simultaneously clamp 4 unicondylar prostheses.

[0015] Further, the unicondylar prosthesis includes a curved surface main body member and a plurality of protruding members located on its inner side. When spraying the unicondylar prosthesis, its inner side is sprayed, while the outer side does not need to be sprayed. Since the connecting rod can rotate, each unicondylar prosthesis installed around the mounting base can be sprayed. For unicondylar prostheses of different specifications, their shapes are the same, but the sizes are different.

[0016] Furthermore, the cross-section of the second chute is convex-shaped. When the first slider is inserted into the second chute, it can be tightly connected and slide smoothly vertically without tipping outward;

[0017] A first through hole for a first bolt to pass through and abut against the second chute is provided on the first slider. When the first slider reaches the designated position, it is fixed to the second chute to prevent it from shifting due to the impact force during spraying.

[0018] Further, the longitudinal section of the first chute is convex-shaped. After the first sliding plate and the second sliding plate are inserted into the first chute, they are restricted by its shape and will not fall downward.

[0019] Further, the first sliding plate includes:

[0020] A second slider adapted to the shape of the first chute;

[0021] A first connecting plate that is perpendicularly connected to the second slider and inserted into the first chute and parallel to the bottom plate;

[0022] And a first baffle that is connected to the second slider and perpendicular to the bottom plate, and the first baffle abuts against the side wall of the curved surface main body member of the unicondylar prosthesis.

[0023] Furthermore, second through holes for a second bolt to pass through and abut against the first connecting plate are provided on both sides of the first chute of the bottom plate.

[0024] Further, the second sliding plate includes:

[0025] A third slider adapted to the shape of the first sliding groove;

[0026] And a second baffle connected to the third slider and perpendicular to the bottom plate. The baffle abuts against the side wall of the curved surface main body of the unicompartmental prosthesis. The unicompartmental prosthesis is clamped and fixed by the first baffle and the second baffle to prevent it from shifting. When the specification of the unicompartmental prosthesis changes, only the positions of the first sliding plate and the second sliding plate need to be adjusted to effectively fix the unicompartmental prosthesis, without designing fixtures of different shapes.

[0027] Further, third through holes are provided on both sides of the first baffle, and fourth through holes are provided on both sides of the second baffle. The third through holes and the fourth through holes are parallel, and the first baffle and the second baffle are connected by a third bolt passing through the third through holes and the fourth through holes.

[0028] Further, the plasma spraying fixture is further provided with a calibration member for adjusting the level of the unicompartmental prosthesis, which includes:

[0029] A fourth slider inserted along the second sliding groove and located above the mounting bottom plate;

[0030] A second connecting plate connected to the fourth slider and perpendicular to the second sliding groove, and a longitudinal third sliding groove is provided on the side facing the mounting bottom plate;

[0031] And a calibration rod slidably connected to the third sliding groove, which is located above the protruding part of the unicompartmental prosthesis. Move the calibration rod downwards to make it contact with the protruding part. When the two are completely in contact without angular deviation, the position of the unicompartmental prosthesis is correct. When there is a gap between the two, the placement position of the unicompartmental prosthesis is shifted and needs to be adjusted and recalibrated.

[0032] Further, by adjusting the length of the second sliding groove, several mounting bottom plates can be connected in one second sliding groove to form a multi-layer structure, so that a single side wall of the mounting seat can clamp multiple unicompartmental prostheses at the same time. In theory, when the space of the plasma spraying furnace cavity is sufficient, the mounting bottom plates can be continuously connected vertically. However, in actual use, usually 1 to 4 mounting bottom plates are connected to one second sliding groove.

[0033] On the other hand, the present invention also provides a plasma spraying fixture tooling applicable to unicompartmental, which includes the above-mentioned plasma spraying fixture, and further includes a planetary gear turntable installed on the plasma spraying work turntable and capable of realizing self-rotation and revolution at the same time, so that the connecting rod rotates. The planetary gear turntable includes:

[0034] The support base installed on the plasma spraying working turntable;

[0035] The turntable rotatably connected to the top of the support base;

[0036] The gear system includes a rotatable sun gear, and a number of planet gears arranged around the sun gear and rotatably connected to the turntable. The planet gears mesh with the sun gear, and the rotation center of the sun gear coincides with that of the turntable;

[0037] The workpiece accommodating cavity fixed on the planet gear and rotating with it, and the connecting rod is installed in the workpiece accommodating cavity.

[0038] Compared with the prior art, the utility model has the following advantages:

[0039] (1) The plasma spraying fixture provided by the utility model is convenient to clamp. Place the unicondylar prosthesis on the mounting base plate, the outside of its curved surface main body is closely attached to the support plate and the base plate, and its side is fixed and limited by the first slide plate and the second slide plate. The clamping is simple and the operation is convenient. Moreover, since the first slide plate and the second slide plate move in the first chute, when facing unicondylar prostheses of different specifications and sizes, move the first slide plate and the second slide plate to make them always closely attached to the side of the unicondylar prosthesis, and the clamping and fixing of unicondylar prostheses of different specifications and sizes can be realized. There is no need to design a separate fixture for each size of unicondylar prosthesis, and it has strong universality and low production cost.

[0040] (2) For the plasma spraying fixture provided by the utility model, second chutes are installed on the side walls of the mounting seat, and the mounting base plates can be connected and installed. When four mounting base plates are installed around the mounting seat, a single plasma spraying fixture can clamp 4 unicondylar prostheses at the same time, and the spraying efficiency is increased to 4 times. At the same time, the rotatable function of the connecting rod enables it to ensure that each unicondylar prosthesis on all four sides can be effectively sprayed, greatly improving the working efficiency and reducing the time cost.

[0041] (3) In the plasma spraying fixture provided by the utility model, a number of mounting base plates can be connected in one of the second chutes to form a multi-layer structure, so that multiple unicondylar prostheses can be clamped simultaneously on the single-sided side wall of the mounting seat. When 2 mounting base plates are connected to each side wall, a single plasma spraying fixture can clamp 8 unicondylar prostheses at the same time, and the spraying efficiency is increased to 8 times; when 3 mounting base plates are connected to each side wall, the spraying efficiency is increased to 12 times; when 4 mounting base plates are connected to each side wall, the spraying efficiency is increased to 16 times.

[0042] (4) The plasma spraying fixture provided by the present utility model is provided with a calibration member for adjusting the levelness of the unicompartmental prosthesis, which can ensure that the unicompartmental prosthesis is in the correct position after clamping and does not shift, thereby ensuring that the spraying surface is accurate and the position that does not need to be sprayed is not sprayed.

[0043] (5) The plasma spraying fixture tooling provided by the present utility model further includes a planetary gear turntable installed on the plasma spraying work turntable and capable of simultaneously realizing self-rotation and revolution. The connecting rod is vertically inserted into the workpiece accommodating cavity therein and can realize self-rotation and revolution along with the planetary gear turntable, so that the unicompartmental prosthesis is vertically placed and the protruding part is horizontal, changing the original way of horizontally placing the unicompartmental prosthesis in the process. In the plasma spraying process, the spraying angle is not restricted, and the unicompartmental prosthesis can be sprayed more flexibly, and the uniformity of the spraying process can be ensured. Description of the Drawings

[0044] Figure 1 Structural schematic diagram of the plasma spraying fixture shown in Embodiment 1;

[0045] Figure 2 Structural schematic diagram of the mounting base plate shown in Embodiment 1;

[0046] Figure 3 Structural schematic diagram of the unicompartmental prosthesis shown in Embodiment 1;

[0047] Figure 4 Top view of the plasma spraying fixture shown in Embodiment 1;

[0048] Figure 5 Structural schematic diagram of the first slide plate shown in Embodiment 1;

[0049] Figure 6 Structural schematic diagram of the second slide plate shown in Embodiment 1;

[0050] Figure 7 Structural schematic diagram of the calibration member shown in Embodiment 1;

[0051] Figure 8 Structural schematic diagram of the plasma spraying fixture when clamping 1 unicompartmental prosthesis shown in Embodiment 1;

[0052] Figure 9 Structural schematic diagram of the planetary gear turntable shown in Embodiment 2;

[0053] Figure 10 Top view of the gear system shown in Embodiment 2;

[0054] Figure 11 Structural schematic diagram of the double-layer plasma spraying fixture shown in Embodiment 3.

[0055] Explanation of the marks in the figure:

[0056] 1 - unicompartmental prosthesis, 11 - curved main body part, 12 - protruding part;

[0057] 2 - connecting rod;

[0058] 3 - mounting base, 31 - second chute;

[0059] 4 - mounting base plate, 41 - base plate, 411 - first chute, 412 - first slider, 4121 - first through hole, 413 - second through hole, 42 - support plate;

[0060] 5 - first slide plate, 51 - second slider, 52 - first connecting plate, 53 - first baffle, 531 - third through hole;

[0061] 6 - second slide plate, 61 - third slider, 62 - second baffle, 621 - fourth through hole;

[0062] 7 - calibration part, 71 - fourth slider, 72 - second connecting plate, 721 - third chute, 73 - calibration rod;

[0063] 8 - planetary gear turntable, 81 - support base, 82 - turntable, 83 - gear system, 831 - sun gear, 832 - planetary gear, 84 - workpiece receiving cavity. Detailed implementation mode

[0064] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present utility model is not limited to the following embodiments. In the following embodiments or implementation manners, if there is no special description of the functional components or structures, it indicates that they are all conventional components or conventional structures adopted in the art to achieve the corresponding functions.

[0065] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0066] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0067] Embodiment 1

[0068] A plasma spraying fixture applicable to a unicondylar knee prosthesis, please refer to Figure 1 , including:

[0069] A rotatable connecting rod 2;

[0070] A mounting base 3 provided at the top of the connecting rod 2;

[0071] A plurality of mounting bottom plates 4 detachably mounted on the side wall of the mounting base 3 and used for placing the unicondylar knee prosthesis 1, please refer to Figure 2 , including a bottom plate 41 connected to the side wall of the mounting base 3, a support plate 42 connected to the bottom of the bottom plate 41 and used for placing the unicondylar knee prosthesis 1, a transverse first chute 411 is provided on the bottom plate 41, and the first chute 411 crosses the bottom plate 41;

[0072] And a first sliding plate 5 and a second sliding plate 6 detachably connected to the bottom plate 41 along both sides of the first chute 411 respectively, and the unicondylar knee prosthesis 1 is placed between the first sliding plate 5 and the second sliding plate 6.

[0073] In this embodiment, please refer to Figure 1 and 2 , a plurality of vertical second chutes 31 are provided on the side wall of the mounting base 3, and a first slider 412 that can be inserted into the second chute 31 and is adapted to it is provided on the back of the bottom plate 41. The second chute 31 has a certain distance from the bottom of the mounting base 3 and passes through the top of the mounting base 3.

[0074] In this embodiment, vertical second chutes 31 are provided around the mounting base 3. When the second chutes 31 are provided around, a single plasma spraying fixture can simultaneously clamp 4 unicondylar knee prostheses 1.

[0075] In this embodiment, please refer to Figure 3, the unicondylar prosthesis 1 includes a curved main body member 11 and a plurality of protruding members 12 located on its inner side. When spraying the unicondylar prosthesis 1, its inner side is sprayed, while the outer side does not need to be sprayed. Since the connecting rod 2 can rotate, each unicondylar prosthesis 1 installed around the mounting seat 3 can be sprayed. For unicondylar prostheses 1 of different specifications, their shapes are the same, but the sizes are different.

[0076] In this embodiment, please refer to Figure 4 , the cross-section of the second chute 31 is convex-shaped. When the first slider 412 is inserted into the second chute 31, it can be firmly connected and slide smoothly vertically without tipping outward;

[0077] Please refer to again Figure 2 , a first through hole 4121 for a first bolt to pass through and abut against the second chute 31 is provided on the first slider 412. When the first slider 412 reaches the designated position, it is fixed to the second chute 31 to prevent it from shifting due to the impact force during spraying.

[0078] In this embodiment, please refer to again Figure 2 , the longitudinal section of the first chute 411 is convex-shaped. After the first slide plate 5 and the second slide plate 6 are inserted into the first chute 411, they are restricted by its shape and will not fall downward.

[0079] In this embodiment, please refer to Figure 5 , the first slide plate 5 includes:

[0080] A second slider 51 adapted to the shape of the first chute 411;

[0081] A first connecting plate 52 perpendicularly connected to the second slider 51 and inserted into the first chute 411 and parallel to the bottom plate 41;

[0082] And a first baffle 53 connected to the second slider 51 and perpendicular to the bottom plate 41, and the first baffle 53 abuts against the side wall of the curved main body member 11 of the unicondylar prosthesis 1.

[0083] In this embodiment, please refer to again Figure 2 , second through holes 413 for a second bolt to pass through and abut against the first connecting plate 52 are provided on both sides of the first chute 411 of the bottom plate 41.

[0084] In this embodiment, please refer to Figure 6 , the second slide plate 6 includes:

[0085] A third slider 61 adapted to the shape of the first chute 411;

[0086] and a second baffle 62 connected to the third slider 61 and perpendicular to the bottom plate 41, the baffle 62 abuts against the side wall of the curved surface main body 11 of the unicondylar prosthesis 1, and the unicondylar prosthesis 1 is clamped and fixed by the first baffle 53 and the second baffle 62 to prevent it from shifting. When the specification of the unicondylar prosthesis 1 changes, only the positions of the first slide plate 5 and the second slide plate 6 need to be adjusted to effectively fix the unicondylar prosthesis 1, without the need to design clamps of different shapes.

[0087] In this embodiment, third through holes 531 are provided on both sides of the first baffle 53, and fourth through holes 621 are provided on both sides of the second baffle 62. The third through holes 531 are parallel to the fourth through holes 621, and the first baffle 53 and the second baffle 62 are connected by a third bolt passing through the third through holes 531 and the fourth through holes 621.

[0088] In this embodiment, please refer to Figure 7 , the plasma spraying fixture is further provided with a calibration member 7 for adjusting the level of the unicondylar prosthesis 1, which includes:

[0089] a fourth slider 71 inserted along the second chute 31 and located above the mounting bottom plate 4;

[0090] a second connecting plate 72 connected to the fourth slider 71 and perpendicular to the second chute 31, and a longitudinal third chute 721 is provided on the side facing the mounting bottom plate 4;

[0091] and a calibration rod 73 slidably connected to the third chute 721, which is above the protruding member 12 of the unicondylar prosthesis 1. Move the calibration rod 73 downwards so that it contacts the protruding member 12. When the two are completely in contact and there is no angular deviation, the position of the unicondylar prosthesis 1 is correct. When there is a gap between the two, the placement position of the unicondylar prosthesis 1 is shifted and needs to be adjusted and recalibrated.

[0092] The working process and working principle of the plasma spraying fixture are as follows:

[0093] Vertically insert the connecting rod 2 into the plasma spraying working turntable, where the mounting seat 3 is located at its top. Insert the first slider 412 of the mounting base plate 4 from the top of the mounting seat 3 into the second chute 31 and move it along the second chute 31 to the bottommost position. Insert a first bolt into the first through-hole 4121 to connect and fix the mounting base plate 4 to the mounting seat 3. Place the unicondylar prosthesis 1 on the support plate 42 with its back closely attached to the base plate 41. Insert the second slider 51 and the first connecting plate 52 of the first slide plate 5 into the mounting base plate 4 along the first chute 411 so that they abut against the side wall of the unicondylar prosthesis 1. Pass a second bolt through the second through-holes 413 on both sides of the first chute 411 to abut against the first connecting plate 52, thereby fixing the first slide plate 5 to the mounting base plate 4. Insert the third slider 61 of the second slide plate 6 from the other side of the first chute 411 so that it abuts against the side wall of the unicondylar prosthesis 1. After clamping the unicondylar prosthesis 1, pass a third bolt through the third through-hole 531 and the fourth through-hole 621 to connect and fix the first slide plate 5 and the second slide plate 6. Insert the fourth slider 71 of the calibration member 7 along the second chute 31, and adjust the calibration rod 73 along the third chute 721 to make it close to the unicondylar prosthesis 1. Stop when it is in close contact with the protruding member 12. When the two are in complete close contact without angular deviation, the position of the unicondylar prosthesis 1 is correct. When there is a gap between the two, the placement position of the unicondylar prosthesis 1 is offset and needs to be adjusted and recalibrated. After calibration, move the calibration member 7 along the second chute 31 to prevent it from covering the unicondylar prosthesis 1. Please refer to Figure 8 . Similarly, install the mounting base plates 4 on the other three sides on the prime number mounting seats 3 and clamp the unicondylar prosthesis 1. After the clamping of the unicondylar prosthesis 1 is completed, perform spraying with a plasma spray gun. During the spraying process, the connecting rod 2 rotates, driving the unicondylar prosthesis 1 to rotate so that each side of the unicondylar prosthesis 1 can be evenly sprayed.

[0094] Embodiment 2

[0095] A plasma spraying fixture tool suitable for unicondylar includes the plasma spraying fixture in Embodiment 1, and further includes a planetary gear turntable 8 installed on the plasma spraying working turntable and capable of simultaneously realizing self-rotation and revolution. Please refer to Figure 9 and Figure 10 , to enable the connecting rod 1 to rotate. The planetary gear turntable 8 includes:

[0096] A support seat 81 installed on the plasma spraying working turntable;

[0097] A turntable 82 rotatably connected to the top of the support seat 81;

[0098] A gear system 83, which includes a rotatable sun gear 831 and a plurality of planet gears 832 arranged around the sun gear 831 and rotatably connected to the turntable 82. The planet gears 832 mesh with the sun gear 831, and the sun gear 831 coincides with the rotation center of the turntable 82;

[0099] A workpiece accommodating cavity 84 fixed on the planet gear 832 and rotating therewith, and the connecting rod 2 is installed in the workpiece accommodating cavity 84.

[0100] The working process and principle of this plasma spraying fixture tooling are as follows:

[0101] Clamp the unicondylar prosthesis 1 in the same way as in Embodiment 1. Vertically insert a plurality of the connecting rods 2 into the workpiece accommodating cavity 84. The sun gear 31 rotates, driving the planet gears 32 to rotate around their own axes while revolving around the axis of the sun gear 31. Thus, the unicondylar prosthesis 1 rotates around its own axis while revolving around the axis of the sun gear 31. When the planet gears 32 rotate multiple times, all the unicondylar prostheses 1 are sprayed. During the spraying process, it is not necessary to disassemble and clamp the unicondylar prosthesis 1 multiple times. Multiple unicondylar prostheses 1 can be sprayed simultaneously, improving the spraying efficiency and production, and ensuring the uniformity of the coating during the spraying process.

[0102] Embodiment 3

[0103] This embodiment provides a double-layer plasma spraying fixture. Compared with Embodiment 1, most of them are the same, except that 2 mounting bases 4 are connected simultaneously from top to bottom in one of the second chutes 31. As Figure 11 shown, the other three side walls of the mounting seat 3 are the same (not shown in the figure), forming a double-layer structure, enabling a single plasma spraying fixture to clamp 4 unicondylar prostheses simultaneously, and the spraying efficiency is increased to 8 times under the same conditions.

[0104] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the utility model. Obviously, those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model should be within the protection scope of the present utility model.

Claims

1. A plasma spraying fixture applicable to unicompartment knee arthroplasty, characterized in that Comprising: A rotatable connecting rod (2); A mounting base (3) provided at the top of the connecting rod (2); A plurality of mounting base plates (4) detachably mounted on the side wall of the mounting base (3) and used for placing the unicondylar prosthesis (1), including a base plate (41) connected to the side wall of the mounting base (3), and a support plate (42) connected to the bottom of the base plate (41) and used for placing the unicondylar prosthesis (1). A transverse first sliding groove (411) is provided on the base plate (41); And a first sliding plate (5) and a second sliding plate (6) detachably connected to the base plate (41) along both sides of the first sliding groove (411) respectively. The unicondylar prosthesis (1) is placed between the first sliding plate (5) and the second sliding plate (6).

2. The plasma spraying fixture applicable to unicompartment knee according to claim 1, characterized in that, A plurality of vertical second sliding grooves (31) are provided on the side wall of the mounting base (3). A first sliding block (412) that can be inserted into the second sliding groove (31) and is adapted to it is provided on the back of the base plate (41).

3. A plasma spraying fixture applicable to a unicompartment knee according to claim 2, characterized in that, The cross-section of the second sliding groove (31) is convex-shaped; A first through hole (4121) for a first bolt to pass through and abut against the second sliding groove (31) is provided on the first sliding block (412).

4. A plasma spraying fixture applicable to unicompartment knee according to claim 2, wherein The plasma spraying fixture is further provided with a calibration member (7) for adjusting the levelness of the unicondylar prosthesis (1), which includes: A fourth sliding block (71) inserted along the second sliding groove (31) and located above the mounting base plate (4); A second connecting plate (72) connected to the fourth sliding block (71) and perpendicular to the second sliding groove (31). A longitudinal third sliding groove (721) is provided on the side facing the mounting base plate (4); And a calibration rod (73) slidably connected to the third sliding groove (721).

5. A plasma spraying fixture applicable to unicompartment knee according to claim 1, characterized in that, The longitudinal section of the first sliding groove (411) is convex-shaped.

6. A plasma spraying fixture applicable to unicompartment knee according to claim 1, characterized in that, The first sliding plate (5) includes: A second sliding block (51) adapted to the shape of the first sliding groove (411); A first connecting plate (52) perpendicularly connected to the second sliding block (51) and inserted into the first sliding groove (411) and parallel to the base plate (41); And a first baffle (53) connected to the second sliding block (51) and perpendicular to the base plate (41).

7. A plasma spraying fixture applicable to unicompartment knee according to claim 6, characterized in that, Second through holes (413) for a second bolt to pass through and abut against the first connecting plate (52) are provided on both sides of the first sliding groove (411) of the base plate (41).

8. A plasma spraying fixture applicable to a unicompartment knee, according to claim 6, characterized in that The second sliding plate (6) includes: A third sliding block (61) adapted to the shape of the first sliding groove (411); And a second baffle (62) connected to the third sliding block (61) and perpendicular to the base plate (41).

9. The plasma spraying fixture applicable to a unicompartment knee according to claim 8, wherein Third through holes (531) are provided on both sides of the first baffle (53), and fourth through holes (621) are provided on both sides of the second baffle (62). The third through holes (531) and the fourth through holes (621) are parallel. The first baffle (53) and the second baffle (62) are connected by a third bolt passing through the third through holes (531) and the fourth through holes (621).

10. A plasma spraying fixture tooling applicable to unicompartment knee, characterized in that, Including the plasma spraying fixture according to any one of claims 1 to 9, it further includes a planetary gear turntable (8) installed on the plasma spraying working turntable and capable of simultaneously realizing self-rotation and revolution, which includes: A support seat (81) installed on the plasma spraying working turntable; A turntable (82) rotatably connected to the top of the support seat (81); A gear system (83), which includes a rotatable sun gear (831) and a plurality of planetary gears (832) arranged around the sun gear (831) and rotatably connected to the turntable (82). The planetary gears (832) are meshed with the sun gear (831), and the rotation center of the sun gear (831) coincides with the rotation center of the turntable (82); A workpiece accommodation cavity (84) fixed on the planetary gear (832) and rotating with it, and the connecting rod (2) is installed in the workpiece accommodation cavity (84).

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