Osteotomy guide device

Abstract

The application relates to an osteotomy guiding device, which comprises a first guide plate, a second guide plate and a guide column. In use, the first guide plate and the second guide plate are first fixedly attached to the surface of the bone tissue at the osteotomy site. After osteotomy, the bone tissue on one side is rotated around the connection between the two sides of the bone tissue to correct, thereby driving the second guide plate away from the first guide plate, the limiting boss approaches the checking part, until the checking part and the limiting boss are completely matched, and then the first guide plate and the second guide plate cannot move in the direction away from each other, the included angle between the bone tissues on both sides of the osteotomy site is fixed and reaches the preset correction angle. Due to the cooperation between the limiting boss and the checking part, the two sides of the bone tissue are more stable during the distraction process and cannot shake, and the correction process is stable. The cooperation between the limiting boss and the checking part can also provide obvious tactile or visual cues for the operator, further improving the correction accuracy.

Description

Technical Field

[0001] This application relates to the field of osteotomy-assisted medical devices, and in particular to osteotomy guiding devices. Background Technology

[0002] The main procedure of traditional osteotomy surgery is as follows: Preoperatively, medical imaging scans are performed on the target bone tissue. Measurements are then taken based on these images. During the surgery, the surgeon first visually locates the bone, then uses fluoroscopy and other measuring tools to repeatedly measure and adjust the position to determine the final osteotomy location. Next, the osteotomy is performed, determining the depth of the osteotomy blade and completing the cut. A retractor is then used to open the osteotomy area, and the retraction depth is repeatedly adjusted using fluoroscopy or measuring tools to ensure the bone tissue on both sides of the opening reaches the predetermined correction angle. Finally, a fixation plate is used to fix the corrected bone tissue. However, this method relies heavily on the surgeon's clinical experience, resulting in lower osteotomy and correction accuracy, and it cannot be customized for each patient. Furthermore, the need for multiple fluoroscopic adjustments during the surgery to determine the position and surgical opening increases the risk of X-ray exposure for both the patient and the surgeon, leading to a longer surgical time.

[0003] Existing osteotomy guide plates can solve the problems of low precision and long operation time in traditional osteotomy, but the correction angle is inconvenient to check and the correction precision is not high. Summary of the Invention

[0004] Therefore, it is necessary to provide an osteotomy guiding device, which addresses the problems of low precision and long operation time in traditional osteotomy, but lacks a verification structure for setting a predetermined value for the correction angle. This affects the accuracy of the correction angle, prolongs the operation time, and reduces the health problems of doctors and patients.

[0005] An osteotomy guide device, the osteotomy guide device comprising:

[0006] A first guide plate, wherein the first guide plate is provided with a guide hole;

[0007] Second guide plate; and

[0008] The guide post includes a column body and a limiting boss. One end of the column body is connected to the second guide plate. The column body passes through a guide hole and is adapted to the guide hole. The limiting boss is located at the end of the column body away from the second guide plate. The first guide plate has a verification part at the guide hole on the side opposite to the second guide plate. The verification part is adapted to the limiting boss to verify the correction angle after osteotomy.

[0009] In one embodiment, the side of the column near the limiting boss is a bent rod, and the end of the column near the second guide plate is set at an angle to the axis of the limiting boss.

[0010] In one embodiment, the cross-section of the column is circular, elliptical, or polygonal.

[0011] In one embodiment, the cross-section of the limiting boss is circular, elliptical, or polygonal.

[0012] In one embodiment, the first guide plate has a snap-fit ​​structure on the side opposite to the second guide plate, and the limiting boss has a mating structure, wherein the snap-fit ​​structure and the mating structure snap-fit ​​together.

[0013] In one embodiment, one of the snap-fit ​​structure and the mating structure is a snap-fit ​​groove or snap-fit ​​protrusion, and the other is a snap fastener.

[0014] In one embodiment, the mating structure is provided in the circumferential direction of the limiting boss, and the snap-fit ​​structure protrudes from the side of the first guide plate away from the second guide plate, or the snap-fit ​​structure is provided on the verification part.

[0015] In one embodiment, the limiting boss is spherical, frustum, or truncated cone, and the inner wall of the verification part is adapted to the limiting boss.

[0016] In one embodiment, the osteotomy guiding device further includes a plurality of connecting posts, one end of which is connected to the first guide plate and the other end of which is connected to the second guide plate.

[0017] In one embodiment, the first guide plate and the second guide plate extend in a direction away from the bone tissue and respectively form a first protrusion and a second protrusion, one end of the column is connected to the first protrusion, and the verification part is disposed on the second protrusion.

[0018] When using the aforementioned osteotomy guiding device, the first guide plate and the second guide plate are first placed tightly against and fixed to the bone tissue surface at the osteotomy site. At this time, the limiting protrusion is far away from the calibration part, and the end of the column connected to the second guide plate is close to the calibration part. After the bone tissue is partially cut by the osteotomy tool, the bone tissue on one side is rotated around the connection between the two bone tissues after the osteotomy, thereby driving the second guide plate away from the first guide plate. At this time, the column moves relative to the guide hole in the guide hole, and the limiting protrusion moves closer to the calibration part until the calibration part and the limiting protrusion are fully matched. Then, the first guide plate and the second guide plate can no longer move relative to each other in opposite directions. The included angle between the bone tissues on both sides of the osteotomy site is fixed to the preset correction angle, that is, the angle of rotation required for the osteotomy. Then, the subsequent osteotomy procedures are carried out. Due to the cooperation between the limiting protrusion and the calibration part, the bone tissue is more stable and does not shake during the process of opening the bone tissues on both sides. The correction process is stable and facilitates the subsequent procedures, thereby shortening the entire surgical procedure. The combination of the limiting boss and the calibration part can also provide the operator with obvious tactile or visual cues, making the bone tissue angle more accurate after osteotomy. Attached Figure Description

[0019] Figure 1 This is a top view of an osteotomy guide device according to an embodiment.

[0020] Figure 2 for Figure 1 The right view.

[0021] Figure 3 for Figure 1 The left view.

[0022] Figure 4 for Figure 1 A schematic diagram of the osteotomy guide device from another perspective.

[0023] Figure 5 This is a schematic diagram of the structure of the limiting boss and the calibration part in one embodiment.

[0024] Figure 6 for Figure 1 Enlarged view of the guide post in the diagram.

[0025] Figure 7 This is an enlarged view of the calibration section of an osteotomy guide device according to an embodiment.

[0026] Figure 8 This is an enlarged view of the fitting of the limiting boss and the calibration part in another embodiment.

[0027] Figure 9 This is an enlarged view of the mating structure and snap-fit ​​structure of another embodiment.

[0028] Figure 10 for Figure 9 Enlarged view of the limiting boss.

[0029] Figure 11 This is an enlarged view of the guide post in another embodiment.

[0030] Explanation of icon numbers:

[0031] 100-Osteotomy Guiding Device;

[0032] 110 - First guide plate; 111 - First protrusion; 112 - Guide hole; 113 - Depth indicator mark; 114 - Protective groove;

[0033] 120 - Second guide plate; 121 - Second protrusion; 122 - Verification part; 123 - Curvature indicator mark; 124 - Positioning groove; 125 - Positioning slot;

[0034] 130 - Guide post; 131 - Post body; 132 - Limiting boss;

[0035] 140 - Snap-fit ​​structure; 141 - Buckle;

[0036] 150 - Fitting structure; 151 - Snap-fit ​​protrusion;

[0037] 160 - Connecting post;

[0038] 170 - Pressing block; 171 - Anti-slip protrusion;

[0039] 200-Bone tissue. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0046] See Figures 1-3 An embodiment of this application provides an osteotomy guiding device 100, which includes a first guide plate 110, a second guide plate 120, and a guide post 130.

[0047] The first guide plate 110 has a guide hole 112. The guide post 130 includes a post body 131 and a limiting boss 132. One end of the post body 131 is connected to the second guide plate 120. The post body 131 passes through the guide hole 112 and is adapted to the guide hole 112. The limiting boss 132 is located at the end of the post body 131 away from the second guide plate 120. The first guide plate 110 has a verification part 122 at the guide hole 112 on the side opposite to the second guide plate 120. The verification part 122 is used to adapt to the limiting boss 132 to verify the correction angle after osteotomy.

[0048] When using the aforementioned osteotomy guide device 100, the first guide plate 110 and the second guide plate 120 are first tightly attached to and fixed to the surface of the bone tissue 200 to be osteotomized, i.e., the surface of the bone tissue 200 at the osteotomy site. At this time, the limiting boss 132 is away from the calibration part 122, and the end of the column 131 connected to the second guide plate 120 is close to the calibration part 122. After the bone tissue 200 is partially cut by the osteotomy tool, the bone tissue 200 on one side of the osteotomy site rotates and corrects itself around the connection point of the two bone tissues 200, thereby driving the second guide plate 120 away from the first guide plate 110. At this time, the column 131 is in the guide hole 112 relative to the guide hole 1 12. The limiting boss 132 moves closer to the calibration part 122 until the calibration part 122 and the limiting boss 132 are fully adapted. Then, the first guide plate 110 and the second guide plate 120 cannot move relative to each other in opposite directions. The angle between the bone tissue 200 on both sides of the osteotomy site is fixed to the preset correction angle, which is the angle of rotation required for the osteotomy. Subsequent osteotomy procedures are then performed. Due to the cooperation between the limiting boss 132 and the calibration part 122, the bone tissue 200 is more stable and does not wobble during the opening of the bone tissue on both sides. The correction process is stable and facilitates subsequent procedures, thus shortening the entire surgical procedure. The cooperation between the limiting boss 132 and the calibration part 122 also provides the operator with clear tactile or visual cues, resulting in a more accurate angle between the bone tissue 200 after the osteotomy.

[0049] Specifically, the limiting boss 132 cannot pass through or enter the guide hole 112.

[0050] Specifically, the osteotomy guide device 100 also includes multiple fasteners, and the first guide plate 110 and the second guide plate 120 have fixing holes. After the fasteners pass through the fixing holes, they are connected and fixed to the bone tissue 200, or connected to a surgical fixation structure provided on the side of the bone tissue 200 opposite to the osteotomy guide device 100, so as to fix the first guide plate 110 and the second guide plate 120 relative to the bone tissue 200.

[0051] In one embodiment, the end of the limiting boss 132 near the guide hole 112 directly and stably abuts against the opening of the guide hole 112, that is, the abutting surface of the limiting boss 132 forms the verification part 122, so that the correction angle is stable and accurate.

[0052] Additionally, a protrusion is provided on the first guide plate 110, and a column 131 passes through the protrusion. A limiting boss 132 abuts against the side of the protrusion away from the second guide plate 120, thereby forming a verification part 122 on the protrusion, so that it is convenient to observe during correction and verification. At the same time, the accuracy of the protrusion is easier to ensure during the processing of the guide plate.

[0053] In another embodiment, a positioning groove 125 is provided on the first guide plate 110. The positioning groove 125 communicates with the guide hole 112 and is adapted to the limiting boss 132 to form the calibration part 122. The column 131 moves in the guide hole 112 until the limiting boss 132 enters the positioning groove 125. Since the limiting boss 132 cannot pass through or enter the guide hole 112, after the limiting boss 132 abuts and adapts to the positioning groove 125, the rotational correction of the bone tissue 200 is completed and the angle is fixed.

[0054] Preferably, after the limiting boss 132 enters the positioning groove 125, the side of the limiting boss 132 away from the second guide plate 120 is flush with the plane at the opening of the positioning groove 125, so that the limiting of the rotation of the bone tissue 200 is more intuitive, and the operator can know whether the rotation of the bone tissue 200 is completed by touch.

[0055] The osteotomy procedure refers to the existing technology. The osteotomy site of the bone tissue 200 needs to cut part of the cross section of the bone tissue 200 to make part of the bone tissue 200 connected and the other parts of the bone tissue 200 separated. The bone tissue 200 on both sides of the separation site rotates around the connection site to correct and move away from each other, thereby increasing the angle between the two sides of the bone tissue 200. The osteotomy guide device 100 of this application is customized according to the angle that the bone tissue 200 needs to be corrected for different patients. The main customized structure includes a column 131, a first guide plate 110 and a second guide plate 120.

[0056] Preferably, the guide hole 112 abuts against and slides against the inner wall of the column 131, thereby preventing the column 131 from shaking in the guide hole 112 and causing damage to the connection of the bone tissue 200.

[0057] Preferably, at least one pressing block 170 is provided at the end of the first guide plate 110 away from the second guide plate 120, and an anti-slip protrusion 171 is provided on the side of the pressing block 170 away from the bone tissue 200, so that the operator can grasp the first guide plate 110 without touching the side of the first guide plate 110 and the side of the second guide plate 120 close to the bone tissue 200.

[0058] See Figure 1In one embodiment, the first guide plate 110 is recessed on the side facing the bone tissue 200 in a direction away from the bone tissue 200, so that the first guide plate 110 is attached to and fixed to the surface of the bone tissue 200 on the upper side of the osteotomy site, and the second guide plate 120 is attached to and fixed to the surface of the bone tissue 200 on the lower side of the osteotomy site.

[0059] See Figure 2 In one embodiment, a depth indicator mark 113 is provided on the side of the first guide plate 110 opposite to the bone tissue 200. The depth indicator mark 113 is used to indicate the osteotomy depth, thereby prompting the operator on the depth of the osteotomy cut.

[0060] See Figure 3 In one embodiment, the first guide plate 110 has a protective groove 114 on the side facing the bone tissue 200 to protect the soft tissue and blood vessels.

[0061] See Figure 3 In one embodiment, the first guide plate 110 has a positioning groove 124 on the side facing the bone tissue 200. The positioning groove 124 is adapted to the bone tissue 200 so that the first guide plate 110 and the bone tissue 200 are positioned and fixed.

[0062] See Figure 4 In one embodiment, the side of the column 131 near the limiting boss 132 is a bent rod, and the end of the column 131 near the second guide plate 120 is set at an angle to the axis of the limiting boss 132. The angle between the end of the column 131 near the second guide plate 120 and the axis of the limiting boss 132 is a complementary angle to the angle of osteotomy rotation correction.

[0063] See Figures 5-8 as well as Figure 11 In one embodiment, the cross-section of the column 131 is circular, elliptical or polygonal, and the guide hole 112 is adapted to the column 131.

[0064] See Figures 5-8 In one embodiment, the limiting boss 132 has a circular, elliptical, or polygonal cross-section.

[0065] See Figures 9-10 In one embodiment, the first guide plate 110 is provided with a snap-fit ​​structure 140 on the side opposite to the second guide plate 120, and the limiting boss 132 is provided with a mating structure 150. The snap-fit ​​structure 140 and the mating structure 150 are snap-fitted together. When the first guide plate 110 moves to a predetermined position relative to the second guide plate 120, the snap-fit ​​is used to lock the position of the limiting boss 132 of the column 131 and the first guide plate 110, so that the positions of the first guide plate 110 and the second guide plate 120 are relatively fixed after the correction rotation is completed, thus ensuring the accuracy of the correction angle.

[0066] See Figures 9-10 In one embodiment, a mating structure 150 is provided in the circumferential direction of the limiting boss 132, and a snap-fit ​​structure 140 protrudes from the side of the first guide plate 110 away from the second guide plate 120.

[0067] In another embodiment, a mating structure 150 is provided in the circumferential direction of the limiting boss 132, and a snap-fit ​​structure 140 is provided on the verification part 122.

[0068] In one embodiment, the snap-fit ​​structure 140 is a slot, and the mating structure 150 is a buckle 141.

[0069] In another embodiment, the snap-fit ​​structure 140 is a snap-fit ​​141, and the mating structure 150 is a slot.

[0070] Furthermore, the snap-fit ​​structure 140 can also be a locking bead, with the matching structure 150 being a slot; or the matching structure 150 can be a locking bead, with the snap-fit ​​structure 140 being a slot. The specific snap-fit ​​method can also be other structural forms, as long as the limiting boss 132 and the verification part 122 can be elastically snapped together, and the relative positions of the first guide plate and the second guide plate can be fixed after snap-fitting. This will not be elaborated further.

[0071] Specifically, there are multiple pairs of mating structures 150. In each pair of mating structures 150, two mating structures 150 are located on both sides of the axial direction of the limiting boss 132, so as to ensure that the abutment force of the two mating structures 150 in each pair of mating structures 150 on the limiting boss 132 is symmetrical, making the limiting boss 132 more stable during the snap-fit ​​process and preventing the limiting boss 132 from shifting.

[0072] See Figures 5-8 In one embodiment, the limiting boss 132 is spherical, frustum, or truncated cone. The inner wall of the verification part 122 is adapted to the limiting boss 132, so that the bone tissue 200 is corrected and rotated after the limiting boss 132 abuts against the inner wall of the verification part 122, which facilitates the determination of the rotation angle.

[0073] Specifically, the limiting boss 132 is spherical, the side wall of the positioning groove 125 is arc-shaped, and the inner diameter of the positioning groove 125 gradually expands from the side close to the second guide plate 120 to the side away from the second guide plate 120, so that the positioning groove 125 can be adapted to the limiting boss 132.

[0074] See Figure 2-3In one embodiment, the osteotomy guide device 100 further includes a plurality of connecting posts 160. One end of the connecting post 160 is connected to the first guide plate 110 and the other end is connected to the second guide plate 120. When the first guide plate 110 and the second guide plate 120 are fixed to the bone tissue 200, it is convenient to control the position between the first guide plate 110 and the second guide plate 120 and leave a gap for the osteotomy site. During osteotomy, the osteotomy knife is directly pressed against the connecting post 160 and the connecting post 160 is cut off before continuing to cut the bone tissue 200.

[0075] See Figure 1-4 In one embodiment, the first guide plate 110 and the second guide plate 120 extend in a direction away from the bone tissue and are respectively formed with a first protrusion 111 and a second protrusion 121. One end of the column 131 is connected to the first protrusion 111, the verification part 122 is provided on the second protrusion 121, and the guide hole 112 is provided on the second protrusion 121. Thus, the guide post 130 and the guide hole 112 protrude from the side of the first guide plate 110 and the second guide plate 120 away from the bone tissue 200, so that the cooperation between the column 131 and the guide hole 112, and the cooperation between the limiting boss 132 and the verification part 122 are smoother.

[0076] Preferably, the first protrusion 111 is disposed on the left or right side of the bone tissue 200, thereby preventing the guide post 130 from obstructing osteotomy between the first guide plate 110 and the second guide plate 120.

[0077] Preferably, the second guide plate 120 has an arc indicator mark 123 on the side opposite to the bone tissue 200. The arc indicator mark 123 is used to indicate the arc of the column 131, thereby indicating the correction angle. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An osteotomy guiding device (100), characterized in that, The osteotomy guide device (100) includes: The first guide plate (110) has a guide hole (112). Second guide plate (120); and A guide post (130) includes a column (131) and a limiting boss (132). One end of the column (131) is connected to the second guide plate (120). The column (131) passes through a guide hole (112) and is adapted to the guide hole (112). The limiting boss (132) is located at the end of the column (131) away from the second guide plate (120). The first guide plate (110) has a verification part (122) at the guide hole (112) on the side away from the second guide plate (120). The verification part (122) is adapted to the limiting boss (132) to verify the correction angle after osteotomy. The first guide plate (110) is provided with a positioning groove (125) communicating with the guide hole (112). When the limiting boss (132) is located in the positioning groove (125), the side of the limiting boss (132) away from the second guide plate (120) is flush with the plane at the opening of the positioning groove (125); the column (131) abuts against and slides with the inner wall of the guide hole (112).

2. The osteotomy guiding device (100) according to claim 1, characterized in that, The side of the column (131) near the limiting boss (132) is a bent rod, and the end of the column (131) near the second guide plate (120) is set at an angle to the axis of the limiting boss (132).

3. The osteotomy guiding device (100) according to claim 1, characterized in that, The cross-section of the column (131) is circular, elliptical or polygonal.

4. The osteotomy guiding device (100) according to claim 1, characterized in that, The cross-section of the limiting boss (132) is circular, elliptical or polygonal.

5. The osteotomy guiding device (100) according to claim 1, characterized in that, The first guide plate (110) has a snap-fit ​​structure (140) on the side opposite to the second guide plate (120), and the limiting boss (132) has a mating structure (150). The snap-fit ​​structure (140) and the mating structure (150) are snap-fitted together.

6. The osteotomy guiding device (100) according to claim 5, characterized in that, One of the snap-fit ​​structure (140) and the mating structure (150) is a slot or snap-fit ​​protrusion (151), and the other is a buckle (141).

7. The osteotomy guiding device (100) according to claim 5, characterized in that, The mating structure (150) is provided in the circumferential direction of the limiting boss (132), and the snap-fit ​​structure (140) protrudes from the side of the first guide plate (110) away from the second guide plate (120), or the snap-fit ​​structure (140) is provided on the verification part (122).

8. The osteotomy guiding device (100) according to claim 1, characterized in that, The limiting boss (132) is spherical, frustum or frustum, and the inner wall of the verification part (122) is adapted to the limiting boss (132).

9. The osteotomy guiding device (100) according to claim 1, characterized in that, The osteotomy guide device (100) also includes a plurality of connecting posts (160), one end of which is connected to the first guide plate (110) and the other end of which is connected to the second guide plate (120).

10. The osteotomy guiding device (100) according to claim 1, characterized in that, The first guide plate (110) and the second guide plate (120) extend in the direction away from the bone tissue and respectively form a first protrusion (111) and a second protrusion (121). One end of the column (131) is connected to the first protrusion (111), and the verification part (122) is provided on the second protrusion (121).

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