Osteotomy guide

Abstract

This invention discloses an osteotomy guide plate, which includes a guide plate body, a first osteotomy blade groove, and a second osteotomy blade groove. A first side portion of the osteotomy guide plate forms the first and second osteotomy blade grooves with the guide plate body. The first osteotomy blade groove allows the osteotomy blade to move within a first plane after insertion, and the second osteotomy blade groove allows the osteotomy blade to move within a second plane after insertion. A first intersection line between the first plane and a reference plane forms a first preset angle with a second intersection line between the second plane and the reference plane. By including the first and second osteotomy blade grooves in the osteotomy guide plate, and with the first intersection line between the first plane and the reference plane and the second intersection line between the second plane and the reference plane forming a first preset angle, this application can limit the movement path of the osteotomy blade through the first and second osteotomy blade grooves. Furthermore, the two movement paths forming a first preset angle ensure that the movement path of the osteotomy blade matches the planned path, thereby improving the accuracy of osteotomy surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an osteotomy guide plate. Background Technology

[0002] High tibial osteotomy (HTO) is a common orthopedic procedure primarily used to treat knee osteoarthritis, especially medial knee osteoarthritis. This surgery improves patients' quality of life by altering the force line of the knee joint, reducing or even eliminating pain.

[0003] In existing techniques, surgeons determine the movement path of the osteotomy blade by performing preoperative planning and calculations based on the physiological morphology of the patient's knee joint. During the surgery, the surgeon uses Kirschner wires as a guide tool, starting from the medial side of the tibia and drilling parallel to the predetermined osteotomy line outwards, forming a hinge-like structure to determine the movement path of the osteotomy blade.

[0004] However, the method of using Kirschner wires as a guiding tool is highly dependent on the doctor's experience and personal skills. Significant human error may occur during the operation, making it difficult to guarantee that the movement path of the osteotome will completely match the preoperative plan. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this application provides an osteotomy guide plate. The osteotomy guide plate includes a first osteotomy blade groove and a second osteotomy blade groove. The first intersection line of the first plane and the reference plane forms a first preset angle with the second intersection line of the second plane and the reference plane. The first and second osteotomy blade grooves can restrict the movement path of the osteotomy blade, and the two movement paths form the first preset angle, which can make the movement path of the osteotomy blade match the preoperative planned path, thereby improving the accuracy of osteotomy surgery.

[0006] To address the above problems, the present invention provides the following technical solution:

[0007] In a first aspect, embodiments of this application provide an osteotomy guide plate, comprising: a guide plate body, a first osteotomy blade groove and a second osteotomy blade groove, wherein the first osteotomy blade groove and the second osteotomy blade groove are used to insert an osteotomy blade;

[0008] The osteotomy guide plate has a first side portion, which forms a first osteotomy blade groove and a second osteotomy blade groove with the guide plate body. The first osteotomy blade groove is used to allow the osteotomy blade to move in a first plane after insertion, and the second osteotomy blade groove is used to allow the osteotomy blade to move in a second plane after insertion. The second osteotomy blade groove is adjacent to one end of the first osteotomy blade groove.

[0009] The first osteotomy slot and the second osteotomy slot satisfy the following: the first intersection line of the first plane and the reference plane forms a first preset angle with the second intersection line of the second plane and the reference plane, wherein the angle between the reference plane and the first plane is within a second preset angle range.

[0010] In some embodiments, the first plane makes an angle of 90 degrees with the reference plane, the second plane is perpendicular to the first plane, the first edge line of the first osteotomy groove is parallel to the first intersection line, and the second plane forms the first preset angle with the first edge line.

[0011] In some embodiments, one end of the first osteotomy slot has a first limiting portion, and the second osteotomy slot is located at the end of the first osteotomy slot that has the first limiting portion.

[0012] When the first osteotomy blade groove and the second osteotomy blade groove are used to osteotomize the bones on the left side of the target body, the first limiting part is used to restrict the osteotomy blade from moving from left to right in the first plane;

[0013] When the first osteotomy blade groove and the second osteotomy blade groove are used to osteotomize the bone on the right side of the target body, the first limiting part is used to restrict the osteotomy blade from moving from right to left in the first plane.

[0014] In some embodiments, the osteotomy guide plate further includes a third osteotomy blade groove and a fourth osteotomy blade groove, the third osteotomy blade groove and the fourth osteotomy blade groove being used to insert the osteotomy blade;

[0015] The osteotomy guide plate has a second side opposite to the first side. The second side and the guide plate body form the third osteotomy blade groove and the fourth osteotomy blade groove. The third osteotomy blade groove is used to allow the osteotomy blade to move in a third plane after insertion. The fourth osteotomy blade groove is used to allow the osteotomy blade to move in a fourth plane after insertion. One end of the fourth osteotomy blade groove is adjacent to the third osteotomy blade groove.

[0016] The third osteotomy slot and the fourth osteotomy slot satisfy the following: the third intersection line of the third plane and the reference plane and the fourth intersection line of the fourth plane and the reference plane form the first preset angle, wherein the angle between the reference plane and the third plane is within the range of the second preset angle.

[0017] In some embodiments, the angle between the third plane and the reference plane is 90 degrees, the fourth plane is perpendicular to the third plane, the second edge line of the third osteotomy groove is parallel to the third intersection line, and the fourth plane forms the first preset angle with the second edge line.

[0018] In some embodiments, one end of the third osteotomy slot has a second limiting portion, and the fourth osteotomy slot is located at the end of the third osteotomy slot that has the second limiting portion;

[0019] When the third osteotomy blade groove and the fourth osteotomy blade groove are used to osteotomize the bones on the left side of the target body, the second limiting part is used to restrict the osteotomy blade from moving from left to right in the third plane;

[0020] When the third and fourth osteotomy slots are used to osteotomize the bones on the right side of the target body, the second limiting part is used to restrict the osteotomy blade from moving from right to left in the third plane.

[0021] In some embodiments, the osteotomy guide plate further includes a fixing part for fixing the osteotomy guide plate to a mechanical device, the mechanical device being capable of moving the osteotomy guide plate.

[0022] In some embodiments, the osteotomy guide plate is provided with a calibration structure for image calibration, the calibration structure including optical probe grooves.

[0023] In some implementations, the first preset angle ranges from 100 degrees to 120 degrees.

[0024] Secondly, embodiments of this application provide a method for using an osteotomy guide plate, applied to the osteotomy guide plate as described in the first aspect, the method comprising:

[0025] During osteotomy, the osteotomy guide plate is moved to a preset position;

[0026] Insert the osteotome into the first osteotome groove and move the osteotome to cut the bone;

[0027] The osteotomy blade is inserted into the second osteotomy blade groove, and the osteotomy blade is moved to cut the bone.

[0028] This application provides an osteotomy guide plate. The osteotomy guide plate includes a first osteotomy blade groove and a second osteotomy blade groove. The first intersection line of the first plane and the reference plane forms a first preset angle with the second intersection line of the second plane and the reference plane. The first osteotomy blade groove and the second osteotomy blade groove can restrict the movement path of the osteotomy blade. The two movement paths form a first preset angle, which can make the movement path of the osteotomy blade match the preoperative planned path, thereby improving the accuracy of osteotomy surgery. Attached Figure Description

[0029] Figure 1 This is a first front view of the osteotomy guide plate provided in the embodiments of this application.

[0030] Figure 2 This is a top view of the osteotomy guide plate provided in the embodiments of this application.

[0031] Figure 3 This is a three-dimensional schematic diagram of the reference surface provided in the embodiments of this application.

[0032] Figure 4 This is a frontal view of the reference plane provided in the embodiments of this application.

[0033] Figure 5A This is a schematic diagram illustrating an application scenario where the osteotomy knife provided in this application is inserted into the first osteotomy knife groove.

[0034] Figure 5B This is a schematic diagram illustrating an application scenario where the osteotomy knife provided in this application is inserted into the second osteotomy knife groove.

[0035] Figure 6 This is a second front view of the osteotomy guide plate provided in the embodiments of this application.

[0036] Figure 7 This is a flowchart illustrating the method of using the osteotomy guide plate provided in the embodiments of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1: Osteotomy guide plate; 10: Guide plate body; 20: First side; 30: Second side; 201: First osteotomy blade groove; 202: Second osteotomy blade groove; 2011: First limiting part; 2012: First edge line; 301: Third osteotomy blade groove; 302: Fourth osteotomy blade groove; 3011: Second limiting part; 3012: Second edge line; 40: Fixing part; 41: Surface of the fixing part; 50: Optical probe groove point; 60: Marking. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] This application provides an osteotomy guide plate, which includes a first osteotomy blade groove and a second osteotomy blade groove. The first intersection line of the first plane and the reference plane forms a first preset angle with the second intersection line of the second plane and the reference plane. The first osteotomy blade groove and the second osteotomy blade groove can restrict the movement path of the osteotomy blade. The two movement paths form the first preset angle, which can make the movement path of the osteotomy blade match the preoperative planned path, thereby improving the accuracy of osteotomy surgery.

[0042] The osteotomy guide plate provided in this application will be described in detail below with reference to the accompanying drawings.

[0043] Please see Figure 1 , Figure 1 This is a first front view of the osteotomy guide plate provided in an embodiment of this application. (As shown...) Figure 1 As shown, the osteotomy guide plate 1 includes a guide plate body 10 and a first osteotomy blade groove (in Figure 1 (not shown in the image) and the second osteotomy blade groove 202.

[0044] Please see Figure 2 , Figure 2 This is a top view of the osteotomy guide plate provided in an embodiment of this application. (See attached image.) Figure 2 As shown, in some embodiments, the osteotomy guide plate 1 has a first side portion 20, which forms a first osteotomy groove 201 and a second osteotomy groove 202 with the guide plate body 10.

[0045] In some embodiments, the first osteotomy slot and the second osteotomy slot are used to insert an osteotomy blade.

[0046] Optionally, the first osteotomy blade groove is used to allow the osteotomy blade to move within a first plane after insertion, and the second osteotomy blade groove is used to allow the osteotomy blade to move within a second plane after insertion.

[0047] Please see Figure 3 , Figure 3 This is a three-dimensional schematic diagram of the reference plane provided in the embodiments of this application. For example... Figure 3 As shown, the osteotomy knife is inserted. Figure 2 The plane formed by the movement of the first osteotomy groove 201 in the middle is the first plane A1, and the first intersection line L1 is the intersection line between the first plane A1 and the reference plane A0.

[0048] Please see Figure 4 , Figure 4 This is a front view schematic diagram of the reference plane provided in an embodiment of this application. For example... Figure 4 As shown, Figure 4 Orthogonally view reference plane A0 and second plane A2, insert osteotomy knife Figure 2 The plane formed by the movement of the second osteotomy blade groove 202 is the second plane A2. For example... Figure 3 As shown, Figure 3 The second intersection line L2 in is Figure 4 The line of intersection between the second plane A2 and the reference plane A0.

[0049] Please see Figure 5A , Figure 5A This is a schematic diagram illustrating an application scenario where the osteotomy blade provided in this application is inserted into the first osteotomy blade groove. For example... Figure 5A As shown, after the osteotomy blade 2 is inserted into the first osteotomy blade groove 201, it moves within the first plane. At this time, the osteotomy blade 2 can only move along the first osteotomy blade groove 201, thus limiting the movement path of the osteotomy blade 2.

[0050] like Figure 5A As shown, in some embodiments, the osteotome 2 is mounted on a first robotic arm 3, which includes a reflective array 31. The first robotic arm 3 is used to move the osteotome 2, and the reflective array 31 is used to obtain the position coordinates of the first robotic arm 3 optically. In this way, the accuracy of controlling the osteotome can be improved compared to controlling it by hand.

[0051] like Figure 1 , Figure 2 and Figure 5A As shown, in some embodiments, the osteotomy guide plate 1 further includes a fixing part 40, which is used to fix the osteotomy guide plate on the mechanical device, and the mechanical device can drive the osteotomy guide plate to move.

[0052] Optionally, the mechanical device is a second robotic arm.

[0053] like Figure 1 , Figure 2 and Figure 5A As shown, the fixing part 40 may optionally include a plurality of through holes for passing through fixing pins or screws.

[0054] In some implementations, a mechanical device moves the osteotomy guide to a preset position and adjusts its orientation to that preset position. This improves the precision of controlling the osteotomy guide and allows the osteotome to cut the bone at a preset position.

[0055] In some embodiments, the osteotomy guide plate body is also provided with through holes for mounting other parts.

[0056] like Figure 5A As shown, in some embodiments, when the first osteotomy blade groove 201 is used to osteotomize the bone 3 on the right side of the target body, the osteotomy blade 3 moves from the end near the fixing part 40 to the end away from the fixing part 40, forming a first osteotomy surface on the bone 3. The first osteotomy surface is located on a first plane, and the first osteotomy surface can also be called a first horizontal osteotomy surface. The intersection of the first osteotomy surface and the bone surface is the first osteotomy line.

[0057] Please see Figure 5B , Figure 5B This is a schematic diagram illustrating an application scenario where the osteotomy blade provided in this application is inserted into the second osteotomy blade groove. For example... Figure 5B As shown, the osteotome moves within the second plane after being inserted into the second osteotome groove. At this time, the osteotome can only move along the second osteotome groove, thus limiting its movement path.

[0058] like Figure 5B As shown, in some embodiments, when the second osteotomy blade groove 202 is used to osteotomize the bone 3 on the right side of the target body, the osteotomy blade 3 moves along the second osteotomy blade groove 202 toward the bone 3 or moves from top to bottom along the second osteotomy blade groove 202, forming a second osteotomy surface on the bone 3. The second osteotomy surface is located on a second plane, and the second osteotomy surface can also be called the first rising osteotomy surface. The intersection of the second osteotomy surface and the bone surface is the second osteotomy line.

[0059] In some embodiments, the second osteotomy groove is adjacent to one end of the first osteotomy groove.

[0060] In some embodiments, the first osteotomy blade groove and the second osteotomy blade groove satisfy the following condition: the first intersection line of the first plane and the reference plane forms a first preset angle with the second intersection line of the second plane and the reference plane. The angle between the reference plane and the first plane is within a second preset angle range. In this way, the first osteotomy line and the second osteotomy line can form a first preset angle, thereby creating a hinge-like structure in the osteotomized bone, facilitating rotation and fixation of the bone by the surgeon.

[0061] In some implementations, the first preset angle ranges from 100 degrees to 120 degrees. For example, the first preset angle is 100 degrees, 101 degrees, 102 degrees, 103 degrees, 104 degrees, 105 degrees, 106 degrees, 107 degrees, 108 degrees, 109 degrees, 110 degrees, 111 degrees, 112 degrees, 113 degrees, 114 degrees, 115 degrees, 116 degrees, 117 degrees, 118 degrees, 119 degrees, or 120 degrees, etc.

[0062] Optionally, the range of the first preset angle is 109 degrees to 112 degrees.

[0063] In some implementations, the second preset angle range is 80 to 100 degrees. For example, the second preset angle range is 80 degrees, 90 degrees, or 100 degrees.

[0064] like Figure 1 and Figure 2 As shown, in some embodiments, the reference plane is the plane where the surface 41 of the fixing part 40 is located near the guide plate body 10.

[0065] In some implementations, during osteotomy, the surgeon selects a reference plane for the bone based on its physiological morphology and makes the reference plane parallel to the reference plane before performing the osteotomy.

[0066] In some implementations, the first plane and the second plane form a first preset angle.

[0067] like Figure 1 As shown, in some embodiments, the first plane forms a 90-degree angle with the reference plane, the second plane is perpendicular to the first plane, the first edge line 2012 of the first osteotomy slot is parallel to the first intersection line, and the second plane forms a first preset angle with the first edge line 2012. In this way, compared to making the first plane and the second plane form a first preset angle to satisfy the first intersection line and the second intersection line forming a first preset angle, the angle of the robotic arm with the osteotomy slot installed can be reduced when the osteotomy slot is changed, preventing the robotic arm from locking up.

[0068] It is understandable that, since both the first plane and the second plane intersect with the reference plane, neither the first plane nor the second plane is a reference plane.

[0069] like Figure 2 As shown, in some embodiments, one end of the first osteotome groove 201 has a first limiting portion 2011. In some embodiments, the first limiting portion is used to restrict the movement of the osteotome within a first plane. When the osteotome moves to the first limiting portion, it cannot move further towards the first limiting portion.

[0070] like Figure 2 As shown, in some embodiments, the first limiting portion 2011 is formed by a protruding portion of the guide plate body 10 toward the first side portion 20.

[0071] In some embodiments, the first limiting portion is formed by a protruding portion of one end of the first side portion toward the guide plate body.

[0072] In some embodiments, one end of the first side has a first connecting portion that connects to the guide plate body, and the first connecting portion is perpendicular to the guide plate body. In this case, the first connecting portion is also the first limiting portion.

[0073] like Figure 2 As shown, optionally, the second osteotomy blade groove 202 is located at one end of the first osteotomy blade groove 201 having the first limiting portion 2011. In this way, the osteotomy blade can prevent cutting into areas of the bone that do not need to be cut, and the first and second osteotomy surfaces can be made to intersect precisely, thereby improving the accuracy of the surgery.

[0074] like Figure 5AAs shown, in some embodiments, when the first osteotomy blade groove and the second osteotomy blade groove 201 are used to osteotomize the bone 3 on the right side of the target body, the first limiting part 2011 is used to restrict the osteotomy blade 3 from moving from right to left in the first plane.

[0075] In some embodiments, when the first osteotomy blade groove and the second osteotomy blade groove are used to osteotomize the bones on the left side of the target body, the first limiting portion is used to restrict the osteotomy blade from moving from left to right in a first plane.

[0076] When performing osteotomy on different target objects, sometimes it is necessary to osteotomize the bones on the left side of the target object's body, and sometimes it is necessary to osteotomize the bones on the right side of the target object's body. In these two cases, the movement path of the osteotomy knife is different, so the corresponding osteotomy knife slot is also different.

[0077] In some embodiments, the osteotomy guide plate further includes a third osteotomy blade groove and a fourth osteotomy blade groove, which are used to insert an osteotomy blade.

[0078] In some implementations, the first and second osteotomy slots are used for osteotomy on one side of the target body, while the third and fourth osteotomy slots are used for osteotomy on the other side of the target body. In this way, when osteotomizing bones on different sides of the body, it is not necessary to change the osteotomy guide plate; only the orientation of the osteotomy guide plate needs to be adjusted to use the corresponding osteotomy slot on the other side, thereby improving the versatility of the osteotomy guide plate.

[0079] like Figure 2 As shown, in some embodiments, the osteotomy guide plate 1 has a second side 30 opposite to the first side 20, and the second side 30 forms a third osteotomy groove 301 and a fourth osteotomy groove 302 with the guide plate body 10. The description of the second side can be referred to the description of the first side above, the description of the third osteotomy groove can be referred to the description of the first osteotomy groove above, and the description of the fourth osteotomy groove can be referred to the description of the second osteotomy groove above.

[0080] In some embodiments, the third osteotomy blade groove is used to allow the osteotomy blade to move in a third plane after insertion, and the fourth osteotomy blade groove is used to allow the osteotomy blade to move in a fourth plane after insertion.

[0081] In some implementations, the fourth osteotomy groove is adjacent to one end of the third osteotomy groove.

[0082] In some embodiments, when the third osteotomy blade groove is used to osteotomize the bone on the left side of the target body, the osteotomy blade moves from the end near the fixing part to the end away from the fixing part, forming a third osteotomy surface on the bone. The third osteotomy surface is located on a third plane, and the third osteotomy surface can also be referred to as the second horizontal osteotomy surface. The intersection of the third osteotomy surface and the bone surface is the third osteotomy line.

[0083] In some implementations, when the fourth osteotomy notch is used to osteotomize the bone on the left side of the target body, the osteotomy blade moves along the fourth osteotomy notch toward the bone or moves from top to bottom along the fourth osteotomy notch, forming a fourth osteotomy surface on the bone. The fourth osteotomy surface is located on a fourth plane and can also be referred to as the second ascending osteotomy surface. The intersection of the fourth osteotomy surface and the bone surface is the fourth osteotomy line.

[0084] In some embodiments, the third and fourth osteotomy grooves satisfy the following condition: the third intersection line of the third plane and the reference plane forms a first preset angle with the fourth intersection line of the fourth plane and the reference plane. The angle between the reference plane and the third plane is within a second preset angle range. In this way, the third and fourth osteotomy lines can form the first preset angle, thereby creating a hinge-like structure in the osteotomized bone, facilitating rotation and fixation by the surgeon.

[0085] Please see Figure 6 , Figure 6 This is a second front view of the osteotomy guide plate provided in an embodiment of this application. (As shown...) Figure 6 As shown, in some embodiments, the angle between the third plane and the reference plane is 90 degrees, the fourth plane is perpendicular to the third plane, the second edge line 3012 of the third osteotome groove is parallel to the third intersection line, and the fourth plane forms a first preset angle with the second edge line 3012. In this way, compared to making the third plane and the fourth plane form a first preset angle, the angle of the robotic arm with the osteotome installed can be reduced when changing the osteotome groove, preventing the robotic arm from locking up.

[0086] like Figure 2 As shown, in some embodiments, one end of the third osteotome groove 301 has a second limiting portion 3011. The first limiting portion is used to restrict the movement of the osteotome within the third plane. When the osteotome moves to the second limiting portion, it cannot move further towards the second limiting portion.

[0087] In some implementations, when the third and fourth osteotomy slots are used to osteotomize the bones on the left side of the target body, the second limiting portion is used to restrict the osteotomy blade from moving from left to right in the third plane.

[0088] In some implementations, when the third and fourth osteotomy slots are used to osteotomize the bones on the right side of the target body, the second limiting part is used to restrict the osteotomy blade from moving from right to left in the third plane.

[0089] like Figure 2 As shown, in some embodiments, the second limiting portion 3011 is formed by a protruding portion of the guide plate body 10 toward the second side portion 30.

[0090] In some embodiments, the second limiting portion is formed by a protruding portion of one end of the second side portion toward the guide plate body.

[0091] In some embodiments, one end of the second side has a second connecting portion that connects to the guide plate body, and the first connecting portion is perpendicular to the guide plate body. In this case, the second connecting portion is the second limiting portion.

[0092] like Figure 2 As shown, in some embodiments, the fourth osteotomy blade groove 302 is located at the end of the third osteotomy blade groove 301 that has the second limiting portion 3011. In this way, the osteotomy blade can prevent cutting into areas of the bone that do not need to be cut, and the third and fourth osteotomy surfaces can be made to intersect precisely, thereby improving the accuracy of the surgery.

[0093] like Figure 1 and Figure 6 As shown, in some embodiments, the osteotomy guide plate 1 is provided with a mark 60, which is used to indicate whether the osteotomy knife groove corresponding to the side is used to osteotomize the bones on the left side of the target body or to osteotomize the bones on the right side of the target body.

[0094] like Figure 1 As shown, in some embodiments, a mark 60 is provided on the first side 20, the mark 60 being "R", indicating that the first osteotomy knife groove and the second osteotomy knife groove are used to osteotomize the bones on the right side of the target body.

[0095] like Figure 6 As shown, in some embodiments, a mark 60 is provided on the second side 30, the mark 60 being "L", indicating that the third osteotomy groove and the fourth osteotomy groove are used to osteotomize the bones on the left side of the target body.

[0096] like Figure 1 and Figure 6 As shown, in some embodiments, the osteotomy guide plate 1 is provided with a calibration structure for image calibration, the calibration structure including an optical probe groove point 50.

[0097] In some implementations, optical probe recesses are used to insert optical probes to obtain, via optical methods, the transformation matrix from the reference array coordinate system to the osteotomy guide coordinate system at the end of the robotic arm. In this way, during osteotomy surgery, the position coordinates of the osteotomy guide can be obtained from the position coordinates of the robotic arm's end effector, providing a reference for the surgeon.

[0098] In some implementations, the number of optical probe grooves is multiple.

[0099] like Figure 1 As shown, optionally, three optical probe grooves 50 are provided on the first side 20, and one optical probe groove 50 is provided on the surface of the guide plate body 10 facing the first side 20.

[0100] like Figure 6 As shown, optionally, three optical probe grooves 50 are provided on the second side 30, and one optical probe groove 50 is provided on the surface of the guide plate body 10 facing the second side 20.

[0101] In some implementations, the calibration structure includes reflective dots. In this way, when the osteotomy guide is photographed with a camera, the osteotomy guide can be identified by the reflective dots in the photograph, and the positional information of the osteotomy guide can be obtained, providing a reference for the doctor to perform osteotomy surgery.

[0102] In summary, the osteotomy guide plate provided in this application has the following advantages:

[0103] 1. The osteotomy guide plate includes a first osteotomy blade groove and a second osteotomy blade groove, and the first intersection line of the first plane and the reference plane forms a first preset angle with the second intersection line of the second plane and the reference plane. The first osteotomy blade groove and the second osteotomy blade groove can restrict the movement path of the osteotomy blade, and the two movement paths form a first preset angle, which can make the movement path of the osteotomy blade match the preoperative planned path, thereby improving the accuracy of osteotomy surgery.

[0104] 2. By using the first osteotomy knife groove and the second osteotomy knife groove to satisfy the following: the first intersection line of the first plane and the reference plane and the second intersection line of the second plane and the reference plane form a first preset angle, so that the first osteotomy line and the second osteotomy line form a first preset angle, thereby making the bone after osteotomy form a hinge-like structure, which makes it easier for doctors to rotate and fix the bone.

[0105] 3. By positioning the second osteotomy blade groove at one end of the first osteotomy blade groove with the first limiting part, the osteotomy blade can prevent cutting into areas of the bone that do not need to be cut, and the first and second osteotomy surfaces can be made to intersect precisely, thereby improving the accuracy of the surgery.

[0106] 4. The first and second osteotomy slots are used to osteotomize the bones on one side of the target body, while the third and fourth osteotomy slots are used to osteotomize the bones on the other side of the target body. When osteotomizing bones on different sides of the body, there is no need to change the osteotomy guide plate. Only the posture of the osteotomy guide plate needs to be adjusted to use the corresponding osteotomy slot on the other side, thereby improving the versatility of the osteotomy guide plate.

[0107] This application also provides a method of using an osteotomy guide plate, applied to the osteotomy guide plate described above. Please refer to... Figure 7 , Figure 7 This is a flowchart illustrating the method of using the osteotomy guide plate provided in this application embodiment. Figure 7 As shown, in some embodiments, the method includes steps S100 to S300.

[0108] Step S100: During osteotomy, move the osteotomy guide plate to the preset position.

[0109] In some implementations, the osteotomy guide plate is connected to a mechanical device, which moves the osteotomy guide plate to a preset position.

[0110] In some implementations, during osteotomy, the surgeon selects a reference plane for the bone based on its physiological morphology and makes the reference plane parallel to the reference plane before performing the osteotomy.

[0111] In some implementations, the doctor selects two corresponding osteotomy slots to perform osteotomy based on the location of the bone on one side of the target body.

[0112] The following steps use the selection of the first and second osteotomy slots for osteotomy as an example, but this does not imply limitation of this application. In some embodiments, the third and fourth osteotomy slots are two corresponding osteotomy slots, and their usage method is the same as that of the first and second osteotomy slots.

[0113] Step S200: Insert the osteotome into the first osteotome groove and move the osteotome to cut the bone.

[0114] Step S300: Insert the osteotome into the second osteotome slot and move the osteotome to cut the bone.

[0115] It is understandable that the order of steps S200 and S300 is not limited.

[0116] Optionally, step S300 is performed after step S200.

[0117] Optionally, step S200 is performed after step S300.

[0118] In some implementations, after step S200, the position of the osteotomy guide plate is adjusted so that the first plane corresponding to the first osteotomy blade groove is aligned with the first osteotomy surface, and then step S300 is executed.

[0119] In some implementations, after step S300, the position of the osteotomy guide plate is adjusted so that the second plane corresponding to the second osteotomy blade groove is aligned with the second osteotomy surface, and then step S300 is executed.

[0120] In summary, this application provides an osteotomy guide plate, which includes a guide plate body, a first osteotomy blade groove, and a second osteotomy blade groove. The first and second osteotomy blade grooves are used to insert an osteotomy blade. The osteotomy guide plate has a first side portion, which forms the first and second osteotomy blade grooves with the guide plate body. The first osteotomy blade groove is used to allow the osteotomy blade to move in a first plane after insertion, and the second osteotomy blade groove is used to allow the osteotomy blade to move in a second plane after insertion. One end of the second osteotomy blade groove is adjacent to one end of the first osteotomy blade groove. The first and second osteotomy blade grooves satisfy the following: the first intersection line between the first plane and the reference plane forms a first preset angle with the second intersection line between the second plane and the reference plane, wherein the angle between the reference plane and the first plane is within the range of a second preset angle. This application uses an osteotomy guide plate including a first osteotomy blade groove and a second osteotomy blade groove. The first intersection line of the first plane and the reference plane forms a first preset angle with the second intersection line of the second plane and the reference plane. The first and second osteotomy blade grooves can restrict the movement path of the osteotomy blade, and the two movement paths form a first preset angle, which can make the movement path of the osteotomy blade match the preoperative planned path, thereby improving the accuracy of osteotomy surgery.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An osteotomy guide plate, characterized in that, include: The guide plate body, the first osteotomy knife groove and the second osteotomy knife groove are used to insert the osteotomy knife; The osteotomy guide plate has a first side portion, which forms a first osteotomy blade groove and a second osteotomy blade groove with the guide plate body. The first osteotomy blade groove is used to allow the osteotomy blade to move in a first plane after insertion, and the second osteotomy blade groove is used to allow the osteotomy blade to move in a second plane after insertion. The second osteotomy blade groove is adjacent to one end of the first osteotomy blade groove. The first osteotomy slot and the second osteotomy slot satisfy the following condition: the first intersection line of the first plane and the reference plane forms a first preset angle with the second intersection line of the second plane and the reference plane; The first plane has an angle of 90 degrees with the reference plane, the second plane is perpendicular to the first plane, the first edge line of the first osteotomy groove is parallel to the first intersection line, and the second plane forms a first preset angle with the first edge line, the first preset angle being between 100 degrees and 120 degrees. One end of the first osteotomy knife groove has a first limiting part, and the second osteotomy knife groove is located at the end of the first osteotomy knife groove that has the first limiting part; When the first osteotomy blade groove and the second osteotomy blade groove are used to osteotomize the bones on the left side of the target body, the first limiting part is used to restrict the osteotomy blade from moving from left to right in the first plane; When the first osteotomy blade groove and the second osteotomy blade groove are used to osteotomize the bone on the right side of the target body, the first limiting part is used to restrict the osteotomy blade from moving from right to left in the first plane.

2. The osteotomy guide plate according to claim 1, characterized in that, The osteotomy guide plate also includes a third osteotomy blade groove and a fourth osteotomy blade groove, the third osteotomy blade groove and the fourth osteotomy blade groove being used to insert the osteotomy blade; The osteotomy guide plate has a second side opposite to the first side. The second side and the guide plate body form the third osteotomy blade groove and the fourth osteotomy blade groove. The third osteotomy blade groove is used to allow the osteotomy blade to move in a third plane after insertion. The fourth osteotomy blade groove is used to allow the osteotomy blade to move in a fourth plane after insertion. One end of the fourth osteotomy blade groove is adjacent to the third osteotomy blade groove. The third osteotomy slot and the fourth osteotomy slot satisfy the following: the third intersection line of the third plane and the reference plane and the fourth intersection line of the fourth plane and the reference plane form the first preset angle, wherein the angle between the reference plane and the third plane is within the second preset angle range.

3. The osteotomy guide plate according to claim 2, characterized in that, The angle between the third plane and the reference plane is 90 degrees, the fourth plane is perpendicular to the third plane, the second edge line of the third osteotomy groove is parallel to the third intersection line, and the fourth plane forms the first preset angle with the second edge line.

4. The osteotomy guide plate according to claim 2, characterized in that, The third osteotomy knife groove has a second limiting part at one end, and the fourth osteotomy knife groove is located at the end of the third osteotomy knife groove that has the second limiting part; When the third osteotomy blade groove and the fourth osteotomy blade groove are used to osteotomize the bones on the left side of the target body, the second limiting part is used to restrict the osteotomy blade from moving from left to right in the third plane; When the third and fourth osteotomy slots are used to osteotomize the bones on the right side of the target body, the second limiting part is used to restrict the osteotomy blade from moving from right to left in the third plane.

5. The osteotomy guide plate according to claim 1, characterized in that, The osteotomy guide plate also includes a fixing part, which is used to fix the osteotomy guide plate to the mechanical device, and the mechanical device can drive the osteotomy guide plate to move.

6. The osteotomy guide plate according to claim 1, characterized in that, The osteotomy guide plate is provided with a calibration structure for image calibration, the calibration structure including optical probe grooves.

Images