Patella osteotomy guide

Abstract

The present invention provides a patellar osteotomy guide, which includes: a force-applying component, two pressing components for compressing the patella, an osteotomy guide component for guiding the osteotomy direction, and an adjustment component; the two pressing components are relatively movably arranged along a first direction; the force-applying component is connected to the pressing components, and the force-applying component is used to drive the pressing components to move; the osteotomy guide component is connected to one of the pressing components via the adjustment component, and the adjustment component is used to adjust the position of the osteotomy guide component relative to the pressing components along the first direction. With such a configuration, the position of the osteotomy guide component relative to the pressing components along the first direction can be adjusted through the setting of the adjustment component, thereby solving the problem of the existing patellar osteotomy tool having a fixed and unadjustable osteotomy amount, improving the convenience of use, and solving the problem of different patellar osteotomy requirements for different patients.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a patella osteotomy guide. Background Art

[0002] In knee surgery, when the patellar trajectory does not achieve the desired effect or the patella is severely worn, patellar osteotomy is required to achieve the desired effect. The amount of osteotomy in existing knee patellar osteotomy tools is fixed.

[0003] However, for patellas with greater wear, fixed patellar osteotomy may result in insufficient resection, which will affect the stability of the later patellar prosthesis installation; for some Asian patients with smaller patellar knees, fixed patellar osteotomy may result in excessive resection, which will result in a cross-section that is too small to install a patellar prosthesis.

[0004] Therefore, a fixed amount of patellar osteotomy may result in insufficient or excessive patellar resection, which cannot meet the needs of different patients. Summary of the Invention

[0005] The purpose of the present invention is to provide a patellar osteotomy guide to solve the problem that the patellar osteotomy amount in the existing patellar osteotomy tools is fixed and cannot be adjusted.

[0006] To solve the above technical problems, the present invention provides a patella osteotomy guide, which includes: a force-applying component, two pressing pieces for pressing on the patella, an osteotomy guide component for guiding the osteotomy direction, and an adjusting component;

[0007] The two pressing parts are relatively arranged movably along a first direction;

[0008] The force-applying component is connected to the pressing component, and the force-applying component is used to drive the pressing component to move;

[0009] The osteotomy guide component is connected to one of the pressing components via the adjusting component, and the adjusting component is used to adjust the position of the osteotomy guide component relative to the pressing component.

[0010] Optionally, the adjusting component includes a first base and a knob;

[0011] The first base is connected to the press-fitting member; the knob is rotatably connected to the first base around its first axis and is restricted in its axial position relative to the first base;

[0012] The knob is connected to the osteotomy guide component via a thread; the osteotomy guide component is restricted from rotating around the first axis relative to the first base, and the knob is used to rotate and drive the osteotomy guide component to move along the first direction.

[0013] Optionally, the first axis is arranged along the first direction.

[0014] Optionally, the knob has a circumferentially arranged limit groove, and the first base includes a limit pin hole, which is arranged along the radial direction of the knob. The limit pin hole is used to align with the limit groove along the first direction so that a pin shaft passes through the limit pin hole and engages in the limit groove.

[0015] Optionally, the first base includes a cylindrical accommodating cavity, the knob has a cylindrical accommodating portion, the outer diameter of the accommodating portion is adapted to the inner diameter of the accommodating cavity, and the accommodating portion is movably disposed in the accommodating cavity;

[0016] The limiting groove is arranged on the accommodating portion, and the limiting pin hole is opened on the side wall of the accommodating cavity.

[0017] Optionally, one of the first base and the osteotomy guide component is provided with a limited rotation hole, and the other of the first base and the osteotomy guide component is provided with a limited rotation protrusion, and the limited rotation hole is adaptively connected to the limited rotation protrusion to limit the rotation of the osteotomy guide component around the first axis relative to the first base.

[0018] Optionally, the knob has a threaded hole extending axially therethrough, the threaded hole having an internal thread, the osteotomy guide component including a first indicator column having an external thread matching the internal thread, the first indicator column being rotatably screwed into the threaded hole; the end face of the first indicator column having an indicator mark, and the knob having scales distributed circumferentially.

[0019] Optionally, when the indicator mark points to the zero position of the scale of the knob, the end surface of the first indicator column is flush with the end surface of the knob.

[0020] Optionally, the adjustment component includes an adjustment plate assembly, a first positioning structure and two or more second positioning structures;

[0021] The adjustment plate assembly is connected to the pressing piece;

[0022] The first positioning structure is disposed on one of the adjustment plate assembly and the osteotomy guide component;

[0023] Two or more second positioning structures are provided on the other of the adjustment plate assembly and the osteotomy guide component; the first positioning structure is adapted to align with any one of the two or more second positioning structures;

[0024] Wherein, when the first positioning structure is adapted and aligned with different second positioning structures, the position of the osteotomy guide component relative to the adjustment plate assembly is different.

[0025] Optionally, the adjustment plate assembly includes a second base and an adjustment plate, and the adjustment plate is rotatably connected to the second base around a second axis; more than two second positioning structures are arranged on the adjustment plate, and different second positioning structures have different distances from the second axis.

[0026] Optionally, the adjustment plate assembly includes a second indicator column arranged along the second axis; the osteotomy guide component has a first elongated hole, the long axis of the first elongated hole is arranged along the first direction, and the first elongated hole is movably mounted outside the second indicator column along the first direction.

[0027] Optionally, the second base has a first mounting hole opened along the second axis, the adjustment plate has a second mounting hole opened along the second axis, and the second indicator column passes through the first mounting hole and the second mounting hole at the same time.

[0028] Optionally, the osteotomy guide component has scales distributed along the long axis of the first elongated hole.

[0029] Optionally, the first positioning structure includes a first positioning hole, the second positioning structure includes a second positioning hole, and the adjustment plate assembly further includes a locking pin, which passes through the first positioning hole and one of the second positioning holes at the same time to lock the first positioning hole and the second positioning hole into alignment.

[0030] Optionally, one of the pressing parts has a guide groove extending along the first direction, and the other pressing part has a guide block extending along the first direction, and the guide block is movably arranged in the guide groove along the first direction.

[0031] Optionally, the force-applying component includes two handles, which are rotatably arranged around a third axis; each handle is rotatably connected to one of the pressing parts, and the third axis is perpendicular to the first direction.

[0032] Optionally, the guide block has a second elongated hole, the long axis of which is arranged along the first direction; the pressing part with the guide groove is rotatably connected to the corresponding handle through a pin, and the pin is movably provided in the second elongated hole along the first direction.

[0033] In summary, the patella osteotomy guide provided by the present invention includes: a force-applying component, two pressing components for compressing the patella, an osteotomy guide component for guiding the osteotomy direction, and an adjustment component; the two pressing components are relatively movably arranged relative to each other along a first direction; the force-applying component is connected to the pressing components, and the force-applying component is used to drive the pressing components to move; the osteotomy guide component is connected to one of the pressing components through the adjustment component, and the adjustment component is used to adjust the position of the osteotomy guide component relative to the pressing components along the first direction.

[0034] With such a configuration, the position of the osteotomy guide component relative to the pressing component along the first direction can be adjusted through the setting of the adjustment component, thereby solving the problem of the existing patellar osteotomy tool that the osteotomy amount is fixed and cannot be adjusted, improving the convenience of use, and solving the problem of different patellar osteotomy needs for different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Those skilled in the art will appreciate that the accompanying drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0036] Figure 1 1 is an overall schematic diagram of the patellar osteotomy guide according to the first embodiment of the present invention;

[0037] Figure 2 Schematic diagram of the osteotomy guide component and the adjustment component according to the first embodiment of the present invention;

[0038] Figure 3a is a schematic diagram of a first substrate according to a first embodiment of the present invention;

[0039] Figure 3b is a top view of the first substrate of Example 1 of the present invention;

[0040] Figure 4 is a schematic diagram of an osteotomy guide component according to a first embodiment of the present invention;

[0041] Figure 5 is a schematic diagram of a knob according to a first embodiment of the present invention;

[0042] Figure 6 is a partial schematic diagram of the knob of the first embodiment of the present invention;

[0043] Figure 7 is a schematic diagram of a first pressing member according to a first embodiment of the present invention;

[0044] Figure 8 is a schematic diagram of a second pressing member according to the first embodiment of the present invention;

[0045] Figure 9 is a schematic diagram of a force-applying component according to a first embodiment of the present invention;

[0046] Figure 10 is an overall schematic diagram of a patellar osteotomy guide according to a second embodiment of the present invention;

[0047] Figure 11 is a schematic diagram of an osteotomy guide component and an adjustment component according to a second embodiment of the present invention;

[0048] Figure 12 is a schematic diagram of a second substrate according to a second embodiment of the present invention;

[0049] Figure 13 is a schematic diagram of an osteotomy guide component according to a second embodiment of the present invention;

[0050] Figure 14 is a schematic diagram of an adjustment plate according to a second embodiment of the present invention;

[0051] Figure 15 Schematic diagram of the locking pin of the second embodiment of the present invention.

[0052] In the attached figure:

[0053] 10 - force-applying member; 100 - third axis; 111, 112 - handles; 113 - third pin hole; 114 - fourth pin hole;

[0054] 20-pressing piece; 201-first pressing piece; 202-second pressing piece; 2021-mortise; 203-guide groove; 204-guide block; 205-anti-slip particles; 206-first pin hole; 207-second pin hole; 208-second elongated hole;

[0055] 30 - osteotomy guide component; 301 - osteotomy groove; 302 - second rotation limiting structure; 303 - first indicator column; 304 - first elongated hole; 305 - scale;

[0056] 40 - adjustment component; 410 - first axis; 411 - first base; 4110 - accommodation cavity; 4111 - tenon; 4112 - limiting pin hole; 4113 - first rotation limiting structure; 412 - knob; 4120 - limiting groove; 4121 - accommodation portion; 4122 - scale; 4123 - threaded hole;

[0057] 42 - adjustment plate assembly; 420 - second axis; 421 - second base; 4211 - first mounting hole; 422 - adjustment plate; 4221 - second mounting hole; 423 - locking pin; 424 - second indicator column;

[0058] 51-first positioning structure; 52-second positioning structure. DETAILED DESCRIPTION

[0059] To make the objects, advantages, and features of the present invention more clearly apparent, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale. They are only used to conveniently and clearly assist in illustrating the purposes of the embodiments of the present invention. In addition, the structures shown in the drawings are often part of the actual structure. In particular, different drawings may need to illustrate different focuses and sometimes use different scales.

[0060] As used in the present invention, the singular forms "a", "an" and "the" include plural objects, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "at least one", and the term "at least two" is generally used in a sense including "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or at least two of such features. The term "proximal end" generally refers to the end closer to the operator, and the term "distal end" generally refers to the end closer to the patient, i.e., the end closer to the lesion. "One end" and "the other end" as well as "proximal end" and "distal end" generally refer to two corresponding parts, which include not only endpoints. The terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium; they can be internal communication between two elements or an interactive relationship between two elements. In addition, as used in the present invention, "one element is arranged on another element" generally only means that there is a connection, coupling, cooperation, or transmission relationship between the two elements, and the connection, coupling, cooperation, or transmission between the two elements can be direct or indirect through an intermediate element, and it should not be understood to indicate or imply a spatial positional relationship between the two elements, that is, one element can be in any orientation such as inside, outside, above, below, or to the side of another element, unless the content clearly indicates otherwise. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The purpose of the present invention is to provide a patellar osteotomy guide to solve the problem that the patellar osteotomy amount in the existing patellar osteotomy tools is fixed and cannot be adjusted.

[0062] The following description is given with reference to the accompanying drawings.

[0063] Please refer to Figures 1 to 15The present embodiment provides a patella osteotomy guide, which includes: a force-applying component 10, two pressing pieces 20 for pressing on the patella, an osteotomy guide component 30 for guiding the osteotomy direction, and an adjusting component 40; the two pressing pieces 20 are arranged along a first direction ( Figure 1 The force-applying component 10 is connected to the pressing component 20, and the force-applying component 10 is used to drive the pressing component 20 to move; the osteotomy guide component 30 is connected to one of the pressing components 20 through the adjusting component 40, and the adjusting component 40 is used to adjust the position of the osteotomy guide component 30 relative to the pressing component 20.

[0064] Please refer to Figure 9 In one example, the force-applying member 10 includes two handles (respectively, a handle 111 and a handle 112), and the two handles 111 and 112 are rotatably arranged around a third axis 100; each handle is rotatably connected to one of the pressing members 20, and the third axis 100 is perpendicular to the first direction. In this configuration, the operator grasps the ends of the two handles 111 and 112 away from the pressing member 20 ( Figure 1 When the left end of the pressing member 20 is pressed against the patella and clamped, the two handles 111 and 112 can be driven to rotate around the third axis 100, thereby driving the two pressing members 20 to move along the first direction, so that the two pressing members 20 can be pressed against the patella and clamped, forming a reference for the subsequent position adjustment of the osteotomy guide component 30. Optionally, anti-slip particles 205 can be provided on the surface of at least one pressing member 20 facing the other pressing member 20 to increase the friction between the pressing member 20 and the patella and prevent the pressing member 20 from slipping when clamping the patella. Optionally, an osteotomy groove 301 is provided on the osteotomy guide component 30, and the osteotomy groove 301 is preferably arranged parallel to the first direction to guide the osteotomy direction of the osteotomy tool (such as a bone saw). It is understandable that in other embodiments, the osteotomy guide component 30 can also be provided with other structures for guiding the osteotomy tool, such as guide rails, sliders, etc., and those skilled in the art can make adjustments according to actual conditions, and this embodiment is not limited to this.

[0065] Please refer to Figure 7 、 Figure 8 , and combined with Figure 1 and Figure 10Preferably, one of the pressing parts 20 has a guide groove 203 extending along the first direction, and the other pressing part 20 has a guide block 204 extending along the first direction, and the guide block 204 is movably arranged in the guide groove 203 along the first direction. For the convenience of description, the two pressing parts 20 are divided into a first pressing part 201 and a second pressing part 202. The first pressing part 201 has a guide groove 203 extending along the first direction, and the second pressing part 202 has a guide block 204 extending along the first direction. The cross-sectional shape of the guide block 204 is adapted to the cross-sectional shape of the guide groove 203. After being inserted into the guide groove 203, the guide block 204 is restricted by the guide groove 203 and can only move along the first direction. Preferably, the cross-sections of the guide groove 203 and the guide block 204 are non-circular to limit the circumferential rotation of the two. In Figure 7 and Figure 8 In the illustrated example, the cross-sections of the guide groove 203 and the guide block 204 are both rectangular. It is understood that the cross-sections of the guide groove 203 and the guide block 204 can also be other shapes and are not limited to being rectangular.

[0066] Optionally, the first pressing member 201 has a first pin hole 206 perpendicular to the first direction, the second pressing member 202 has a second pin hole 207 perpendicular to the first direction, the handle 111 has a third pin hole 113 perpendicular to the first direction, and the handle 112 has a fourth pin hole 114 perpendicular to the first direction; the third pin hole 113 is aligned with the first pin hole 206 and connected via a pin shaft, and the fourth pin hole 114 is aligned with the second pin hole 207 and connected via a pin shaft, thereby rotatably connecting the handle 111 to the first pressing member 201 and the handle 112 to the second pressing member 202. Preferably, the two handles 111 and 112 can also form a similar pin hole and pin shaft connection at the third axis 100, so that the two handles 111 and 112 can rotate around the third axis 100.

[0067] Furthermore, the guide block 204 has a second elongated hole 208, the major axis of which is arranged along the first direction. The pressing member (i.e., the first pressing member 201) having the guide slot 203 is rotatably connected to the corresponding handle 111 via a pin 121. The width of the pin 121 perpendicular to the first direction matches the width of the elongated hole 208 perpendicular to the first direction. The pin 121 is movably inserted into the second elongated hole 208 along the first direction. Optionally, the second elongated hole 208 may be an oblong hole or a rectangular hole. This configuration further restricts the movement direction of the two pressing members 20, preventing them from moving in directions other than the first direction.

[0068] Through the above configuration, when the operator holds the force-applying component 10 and applies force, the two pressing parts 20 can be pressed against the patella to clamp the patella. Furthermore, by setting the adjustment component 40, the position of the osteotomy guide component 30 relative to the pressing part 20 can be adjusted, thereby solving the problem of the fixed and non-adjustable osteotomy amount of the existing patellar osteotomy tools, improving the ease of use, and solving the problem of different patellar osteotomy needs for different patients. The specific structure and principle of the adjustment component 40 are exemplarily described below through two specific embodiments. It should be noted that the structure of the adjustment component 40 is not limited to the two embodiments shown below, and can also be other structural forms, and the present invention is not limited to this.

[0069] [Example 1]

[0070] Please refer to Figures 1 to 9 In the first embodiment, the adjusting component 40 includes a first base 411 and a knob 412; the first base 411 is connected to the pressing piece 20; the knob 412 is rotatably connected to the first base 411 around its own first axis 410, and is restricted in its axial position relative to the first base 411; the knob 412 is connected to the osteotomy guide component 30 through a threaded connection; the osteotomy guide component 30 is restricted in rotation around the first axis 410 relative to the first base 411, and the knob 412 is used to rotationally drive the osteotomy guide component 30 to move along the first direction.

[0071] In an alternative embodiment, the first base 411 is connected to the first pressing member 201. For example, the first base 411 has a tenon 4111, and the first pressing member 201 has a mortise 2021 for the tenon 4111 to be inserted into. After the tenon 4111 is inserted into the mortise 2021, it can be further secured with a plurality of pins, thereby forming a reliable fixed connection between the first base 411 and the first pressing member 201. It is understood that in other embodiments, the first base 411 can also be connected to the second pressing member 202.

[0072] Please refer to Figure 3a and Figure 3b , and combined with reference Figure 5 Optionally, the first base 411 includes a cylindrical accommodating cavity 4110, and the knob 412 has a cylindrical accommodating portion 4121 (see Figure 5 ), the outer diameter of the accommodating portion 4121 is adapted to the inner diameter of the accommodating cavity 4110, and the accommodating portion 4121 is movably disposed in the accommodating cavity 4110;

[0073] Please refer to Figure 5The knob 412 has a circumferentially arranged limiting groove 4120, and the first base 411 includes a limiting pin hole 4112. The limiting pin hole 4112 is arranged along the radial direction of the knob 412. The limiting pin hole 4112 is used to align with the limiting groove 4120 along the first direction, so that a pin shaft passes through the limiting pin hole 4112 and engages with the limiting groove 4120. In this configuration, after the pin shaft passes through the limiting pin hole 4112 and engages with the limiting groove 4120, it can limit the position of the knob 412 along its own axial direction relative to the first base 411, but does not limit the rotation of the knob 412 itself. Optionally, the limiting groove 4120 is provided on the accommodating portion 4121, and the limiting pin hole 4112 is opened on the side wall of the accommodating cavity 4110.

[0074] Preferably, the first axis is arranged along the first direction, and rotation of the knob 412 is converted into movement of the osteotomy guide component 30 along the first direction, and the osteotomy guide component 30 does not move in directions other than the first direction. It is understood that in other embodiments, the first axis may also form a certain angle with the first direction. In these embodiments, rotation of the knob 412 is converted into movement of the osteotomy guide component 30 along the first direction, while the osteotomy guide component 30 also produces a certain displacement in directions other than the first direction, that is, the osteotomy guide component 30 may move obliquely relative to the first direction. In some cases, such oblique movement may also meet the requirements. Therefore, the position of the osteotomy guide component 30 relative to the pressing member 20 should not be narrowly understood as the axial position of the osteotomy guide component 30 relative to the pressing member 20 along the first direction, but should be broadly understood as the position of the osteotomy guide component 30 relative to the pressing member 20 in space.

[0075] It is understood that the cooperation between the knob 412 and the first base 411 is not limited to the knob 412 having the receiving portion 4121 and the first base 411 having the receiving cavity 4110. In other embodiments, the knob 412 may have the receiving cavity and the first base may have the receiving portion, which can achieve the same effect. In other embodiments, the knob 412 and the first base 411 may not be nested together, but may be connected by an additional ring. Those skilled in the art can make reasonable configurations based on existing technology, and this embodiment is not limited to this.

[0076] Preferably, the first base 411 has a first rotation limiting structure 4113, and the osteotomy guide component 30 has a second rotation limiting structure 302; the first rotation limiting structure 4113 is adaptively connected to the second rotation limiting structure 302 to limit the rotation of the osteotomy guide component 30 around the first axis 410 relative to the first base 411.

[0077] In an alternative embodiment, the first rotation limiting structure 4113 includes a rotation limiting hole, and the second rotation limiting structure 302 includes a rotation limiting protrusion; the rotation limiting hole is opened on one of the first base 411 and the osteotomy guide component 30, and the rotation limiting protrusion is provided on the other of the first base 411 and the osteotomy guide component 30. Figures 2 to 4 In one exemplary embodiment, a limited rotation hole is provided on the first base 411, and a limited rotation protrusion is provided on the osteotomy guide component 30. The cross-sectional shape of the limited rotation protrusion matches the cross-sectional shape of the limited rotation hole. The limited rotation protrusion is used to be inserted into the limited rotation hole and is limited by the limited rotation hole in circumferential rotation around the first axis 410. Optionally, the cross-sectional shape of the limited rotation protrusion and the cross-sectional shape of the limited rotation hole are both non-circular to limit the relative rotation between the two. Figures 2 to 4 In the illustrated example, the cross-sectional shape of the rotation-limiting projection and the cross-sectional shape of the rotation-limiting hole are both drum-shaped. Of course, as long as the cross-sectional shape of the rotation-limiting projection and the cross-sectional shape of the rotation-limiting hole are non-circular, they can limit relative rotation between the two, thereby achieving torque transmission. Those skilled in the art may select other shapes, such as rectangular, polygonal, star-shaped, or even irregular shapes, as practical, and this embodiment does not limit this. It is understood that in other embodiments, the rotation-limiting projection may be provided on the first base 411, while the rotation-limiting hole may be provided on the osteotomy guide component 30. This can achieve a similar effect. Thus, when the knob 412 is rotated, its axial position relative to the first base 411 is limited, thereby driving the osteotomy guide component 30 along the first axis 410 via the threaded drive.

[0078] Please refer to Figures 4 to 6 In one exemplary embodiment, the knob 412 has a threaded hole 4123 extending axially therethrough. The threaded hole 4123 has internal threads. The osteotomy guide 30 includes a first indicator post 303 having external threads that mate with the internal threads and is rotatably screwed into the threaded hole 4123. An indicator mark, such as a horizontal line or arrow, is provided on the end surface of the first indicator post 303. Preferably, the knob 412 has circumferentially distributed scales 4122 that indicate the axial position of the osteotomy guide 30 relative to the knob 412, thereby reflecting the position of the osteotomy guide 30 relative to the first pressing member 201.

[0079] Optionally, the reading range of the scale 4122 is between 0-8. By adjusting the pitch of the internal thread and the external thread, the reading of the scale 4122 can be associated with the axial movement distance of the first indicator column 303. For example, a reading of 1 represents that the axial movement distance of the first indicator column 303 is 1 mm, that is, the position of the osteotomy guide component 30 relative to the first pressing component 201 is 1 mm, that is, the adjustable osteotomy amount is 1 mm.

[0080] Furthermore, when the indicator mark points to the zero position of the scale 4122 of the knob 412 , the end surface of the first indicator column 303 is flush with the end surface of the knob 412 for easy observation.

[0081] Of course, in other embodiments, the threaded connection between the knob 412 and the osteotomy guide component 30 is not limited to the above example. The knob 412 may have external threads and the osteotomy guide component 30 may have internal threads. The present invention is not limited to this.

[0082] The following combination Figures 1 to 9 , the assembly steps of the patella osteotomy guide provided in the first embodiment are explained by way of example.

[0083] Step S1: First, the accommodating portion 4121 of the knob 412 can be placed in the accommodating cavity 4110 of the first base 411, and the pin shaft is passed through the limiting pin hole 4112 on the first base 411 and engaged in the limiting groove 4120 of the accommodating portion 4121, thereby limiting the knob 412 to rotate only around its own axis and unable to move axially.

[0084] Step S2: Move the first indicator column 303 of the osteotomy guide component 30 from the side of the first base 411 away from the accommodating cavity 4110 ( Figure 2 The first indicator column 303 is inserted into the threaded hole 4123 until the first indicator column 303 passes through the rotation limiting hole of the first rotation limiting structure 4113, and the knob 412 is rotated to gradually screw the first indicator column 303 into the threaded hole 4123 until the end face of the first indicator column 303 is flush with the end face of the knob 412, and the indicator mark on the end face of the first indicator column 303 points to the zero position of the scale 4122 of the knob 412, thereby completing the assembly of the osteotomy guide component 30 and the adjustment component 40.

[0085] Step S3: inserting the tenon 4111 of the first base 411 into the mortise 2021 of the first pressing piece 201, and optionally fixing it with a pin.

[0086] Step S4: insert the guide block 204 of the second pressing member 202 into the guide groove 203 of the first pressing member 201, and then use the pin 121 to pass through the third pin hole 113 and the first pin hole 206 respectively, and the pin 122 to pass through the fourth pin hole 114 and the second pin hole 207 respectively to complete the assembly.

[0087] During use, the operator squeezes the two handles 111 and 112 of the force-applying component 10, adjusts the two pressing pieces 20 to clamp the patella, then rotates the knob 412 to adjust the amount of osteotomy according to the reading on the scale 4122 on the knob 412. The operator then proceeds to perform the patellar osteotomy operation through the osteotomy groove 301 on the osteotomy guide component 30. Since adjustment is achieved by rotating the knob 412, the amount of osteotomy can be infinitely adjusted. The threaded connection ensures that the position of the osteotomy guide component 30 self-locks after adjustment, making operation convenient. Furthermore, the current amount of osteotomy can be directly observed via the scale 4122 and indicator mark, making it intuitive and convenient.

[0088] [Example 2]

[0089] Please refer to Figures 10 to 15 In the second embodiment, the adjustment component 40 includes an adjustment plate assembly 42, a first positioning structure 51 and two or more second positioning structures 52; the adjustment plate assembly 42 is connected to the press-fitting member 20; the first positioning structure 51 is arranged on one of the adjustment plate assembly 42 and the osteotomy guide component 30; the two or more second positioning structures 52 are arranged on the other of the adjustment plate assembly 42 and the osteotomy guide component 30; the first positioning structure 51 is used to adapt and align with any one of the two or more second positioning structures 52; wherein, when the first positioning structure 51 adapts and aligns with different second positioning structures 52, the position of the osteotomy guide component 30 relative to the adjustment plate assembly 42 is different.

[0090] Unlike the first embodiment, in the second embodiment, the position of the osteotomy guide 30 relative to the adjustment plate assembly 42 is adjusted by aligning the first positioning structure 51 with a different second positioning structure 52. In an alternative embodiment, the adjustment plate assembly 42 includes a second base 421 and an adjustment plate 422. The adjustment plate 422 is disposed on the second base 421, and the second base 421 is connected to the first pressing member 201. Similar to the first embodiment, the second base 421 has a tenon 4111, and the first pressing member 201 has a mortise 2021 for the tenon 4111. The specific structure and connection principle of the tenon 4111 and the mortise 2021 are described in detail in the first embodiment and will not be repeated here.

[0091] Please refer to Figures 11 to 14Optionally, the adjustment plate 422 is rotatably connected to the second base 421 about the second axis 420. In one exemplary embodiment, the second base 421 has a first mounting hole 4211 defined along the second axis 420, and the adjustment plate 422 has a second mounting hole 4221 defined along the second axis 420. The adjustment plate assembly 42 further includes a second indicator post 424 disposed along the second axis 420. The second indicator post 424 passes through both the first mounting hole 4211 and the second mounting hole 4221, thereby enabling the adjustment plate 422 to rotate relative to the second base 421 about the second axis 420. It is understood that in other embodiments, the second indicator post 424 may be fixedly formed with one of the adjustment plate 422 and the second base 421, while the other of the adjustment plate 422 and the second base 421 is provided with a mounting hole compatible with the second indicator post 424, achieving the same effect.

[0092] Furthermore, two or more second positioning structures 52 are provided on the adjustment plate 422, with different second positioning structures 52 having different distances from the second axis 420. With this configuration, when the adjustment plate 422 rotates around the second axis 420 to different angles, and different second positioning structures 52 align with the first positioning structure 51, the distances of the first positioning structure 51 from the second axis 420 are different, thereby enabling adjustment of the position of the osteotomy guide 30 relative to the adjustment plate assembly 42.

[0093] In an alternative exemplary embodiment, the first positioning structure 51 includes a first positioning hole, the second positioning structure 52 includes a second positioning hole, and the adjustment plate assembly 42 further includes a locking pin 423. The locking pin 423 is pluggable relative to the first positioning hole and the second positioning hole. The locking pin 423 passes through the first positioning hole and the second positioning hole at the same time to lock the first positioning hole and the second positioning hole in alignment. Figure 14 ,exist Figure 14 In the illustrated example, the adjustment component 40 includes a total of five second positioning holes, each located at different distances from the second axis 420. As will be appreciated, by aligning the five second positioning holes at different distances from the second axis 420 with the first positioning hole and locking them with the locking pin 423, the amount of osteotomy can be quickly and accurately adjusted. Furthermore, the locking mechanism using the locking pin 423 is reliable and stable, facilitating improved positional stability of the osteotomy guide 30.

[0094] Of course, in some other embodiments, the first positioning structure 51 is not limited to including the first positioning hole, and the second positioning structure 52 is not limited to including the second positioning hole. The first positioning structure 51 and the second positioning structure 52 can also include different structures such as positioning beads, positioning grooves, positioning magnetic blocks, etc. Those skilled in the art can configure the structures of the first positioning structure 51 and the second positioning structure 52 differently according to the existing technology, and the present invention is not limited to this.

[0095] Preferably, the osteotomy guide component 30 has a first elongated hole 304, the major axis of which is arranged along the first direction. The width of the first elongated hole 304 perpendicular to the first direction matches the width of the second indicator post 424 perpendicular to the first direction. The first elongated hole 304 is movably disposed outside the second indicator post 424 along the first direction. The provision of the first elongated hole 304 restricts the osteotomy guide component 30 to movement only in the first direction, preventing movement in other directions.

[0096] Furthermore, the osteotomy guide 30 has scales 305 distributed along the long axis of the first elongated hole 304. Different positions of the second indicator post 424 along the first elongated hole 304 indicate different readings of the scale 305. It will be appreciated that the reading of the scale 305 reflects the position of the osteotomy guide 30 relative to the adjustment plate 422, and therefore, the position of the osteotomy guide 30 relative to the first pressing member 201.

[0097] The following combination Figures 10 to 15 , the method of using the patellar osteotomy guide provided in the second embodiment is explained by way of example.

[0098] During use, the operator squeezes the two handles 111 and 112 of the force-applying component 10, adjusts the two pressing members 20 to clamp the patella, pulls out the locking pin 423, and rotates the adjustment plate 422. As the adjustment plate 422 rotates about the second axis 420, the second indicator post 424 moves up and down in the first elongated hole 304, thereby causing the osteotomy guide component 30 to move up and down with the rotation of the adjustment plate 422. When the second indicator post 424 is aligned with the desired scale 305, the locking pin 423 is inserted, sequentially passing through the first and second positioning holes, locking the position of the osteotomy guide component 30 relative to the adjustment plate 422, thereby locking the position of the osteotomy guide component 30 relative to the first pressing member 201. Subsequent patellar osteotomy can then be performed through the osteotomy groove 301 on the osteotomy guide component 30.

[0099] Because the amount of osteotomy can be adjusted by inserting and removing the locking pin 423, the adjustment of the amount of osteotomy can be rapid and precise. Furthermore, the structure of the locking pin 423 inserted and locked is reliable and stable, which helps to improve the positional stability of the osteotomy guide 30. Furthermore, the scale 305 provided on the osteotomy guide 30 provides ample viewing field, making it easier for the operator to observe the current amount of osteotomy.

[0100] In summary, the patellar osteotomy guide provided by the present invention includes: a force-applying component, two pressing components for compressing the patella, an osteotomy guide component for guiding the osteotomy direction, and an adjustment component; the two pressing components are relatively movably arranged relative to each other along a first direction; the force-applying component is connected to the pressing components, and the force-applying component is used to drive the pressing components to move; the osteotomy guide component is connected to one of the pressing components via the adjustment component, and the adjustment component is used to adjust the position of the osteotomy guide component relative to the pressing components along the first direction. With such a configuration, the position of the osteotomy guide component relative to the pressing components along the first direction can be adjusted through the setting of the adjustment component, thereby solving the problem of the existing patellar osteotomy tool having a fixed and unadjustable osteotomy amount, improving the convenience of use, and solving the problem of different patellar osteotomy requirements for different patients.

[0101] It should be noted that the above embodiments can be combined with each other. The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure are within the scope of protection of the claims.

Claims

1. A patellar osteotomy guide, characterized in that: include: A force-applying component, two pressing pieces for pressing onto the patella, an osteotomy guide component for guiding the osteotomy direction, and an adjusting component; The two pressing parts are relatively arranged movably along a first direction; The force-applying component is connected to the pressing component, and the force-applying component is used to drive the pressing component to move; The osteotomy guide component is connected to one of the pressing components via the adjusting component, and the adjusting component is used to adjust the position of the osteotomy guide component relative to the pressing component; one of the pressing components has a guide groove extending along the first direction, and the other pressing component has a guide block extending along the first direction, and the guide block is movably disposed in the guide groove along the first direction; The adjusting component includes an adjusting plate assembly, a first positioning structure and two or more second positioning structures; The adjustment plate assembly is connected to the pressing piece; The first positioning structure is disposed on one of the adjustment plate assembly and the osteotomy guide component; Two or more second positioning structures are provided on the other of the adjustment plate assembly and the osteotomy guide component; the first positioning structure is adapted to align with any one of the two or more second positioning structures; Wherein, when the first positioning structure is adapted and aligned with different second positioning structures, the position of the osteotomy guide component relative to the adjustment plate assembly is different; The adjustment plate assembly includes a second base and an adjustment plate, and the adjustment plate is rotatably connected to the second base around a second axis; more than two second positioning structures are arranged on the adjustment plate, and different second positioning structures have different distances from the second axis.

2. The patellar osteotomy guide according to claim 1, characterized in that: The adjustment plate assembly includes a second indicator column arranged along the second axis; the osteotomy guide component has a first elongated hole, the long axis of the first elongated hole is arranged along the first direction, and the first elongated hole is movably mounted outside the second indicator column along the first direction.

3. The patellar osteotomy guide according to claim 2, characterized in that: The second base has a first mounting hole opened along the second axis, the adjustment plate has a second mounting hole opened along the second axis, and the second indicator column passes through the first mounting hole and the second mounting hole at the same time.

4. The patellar osteotomy guide according to claim 2, characterized in that: The osteotomy guide component has scales distributed along the long axis of the first elongated hole.

5. The patellar osteotomy guide according to claim 1, characterized in that: The first positioning structure includes a first positioning hole, the second positioning structure includes a second positioning hole, and the adjustment plate assembly also includes a locking pin, which passes through the first positioning hole and one of the second positioning holes at the same time to lock the first positioning hole and the second positioning hole in an adapted and aligned manner.

6. The patellar osteotomy guide according to claim 1, characterized in that: The force-applying component includes two handles, which are rotatably arranged around a third axis; each handle is rotatably connected to one of the pressing parts, and the third axis is perpendicular to the first direction.

7. The patellar osteotomy guide according to claim 6, characterized in that: The guide block has a second elongated hole, the major axis of which is arranged along the first direction; the pressing part having a guide groove is rotatably connected to the corresponding handle through a pin shaft, and the pin shaft is movably provided in the second elongated hole along the first direction.

Images